Prosecution Insights
Last updated: July 17, 2026
Application No. 18/458,254

ROTATABLE POLYGON MIRROR, OPTICAL DEFLECTOR, OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS

Final Rejection §103
Filed
Aug 30, 2023
Priority
Sep 22, 2022 — JP 2022-151928
Examiner
BOURQUINE, MACKENZI TATE
Art Unit
2872
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Canon Inc.
OA Round
2 (Final)
80%
Grant Probability
Favorable
3-4
OA Rounds
5m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allowance Rate
66 granted / 82 resolved
+12.5% vs TC avg
Moderate +13% lift
Without
With
+13.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
23 currently pending
Career history
112
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
81.8%
+41.8% vs TC avg
§102
15.8%
-24.2% vs TC avg
§112
1.6%
-38.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 82 resolved cases

Office Action

§103
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Response to Amendment The amendments filed on 3/10/2026 are acknowledged and accepted. Claims 1-18 are amended, and Claims 1-18 remain pending in the application. Drawings The drawings filed on 08/30/2023 are acknowledged and accepted. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claims 1-18 are rejected under 35 U.S.C. 103 as being unpatentable over Hoshino (US20170097450A1, of record). With respect to Claim 1, Hoshino discloses the rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]) molded with a resin ([0007]: plastic is injected into a mold to create the polygon mirror) comprising: a plurality of reflecting surfaces ([0050]: element 110 has four reflective sides, element 111) provided in parallel to a rotational axis direction and configured to reflect a light (Fig. 3a—element 110 has four reflecting surfaces, 111, which are parallel to the rotational axis); a first surface (Fig. 3a—element 112a, first surface; [0050]) and a second surface (Fig. 3a—element 112b, second surface; [0050]) perpendicular to the rotational axis direction (Fig. 3a—elements 112a and 112b are parallel to the rotational axis); a plurality of gate portions (Fig. 3a—element 114, gates; [0053]) provided on the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]) and being marks through which the resin is injected during molding (Fig. 3a—element 114 are injection molding marks on surface 112a) the rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]); and a recess-projection shaped (Fig. 3a—element 115, first projections; [0058]) portion (Fig. 3a—element 115 and 116; [0058] and [0062]) provided on (Fig. 3a—element 115 are disposed on element 112a) the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]), and as viewed in a direction perpendicular to the rotational axis direction having at least one shape of a recess shape recessed (Fig. 3a—element 116, depression ;[0062]) recessed in the rotational axis direction from (Fig. 3a—element 116 is recessed in element 112b) the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]) and a projection shape (Fig. 3a—element 115, first projections; [0058]) projected in the rotational axis direction (Fig. 3a—element 115 project from element 112a) from the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]), wherein each of the gate portions (Fig. 3a—element 114, gates; [0053]) has a cylindrical shape (Fig. 3a—element 114 is cylindrical), wherein, as viewed in the direction perpendicular to the rotational axis direction (Fig. 4A—viewed from above, perpendicular to the rotation direction), each of a plurality of boundary virtual straight lines (Fig. 4—elements L1 and PB) is a virtual straight line connecting (i) a rotation center of the rotatable polygon mirror (Fig. 3a—element 110c, center of the polygon mirror; [0055]) and (ii) a boundary of two adjacent (Fig. 4a—vertex 119D is positioned on an edge along which the adjacent reflecting surfaces 111B, 111D intersect) reflecting surfaces (Fig. 3A-- four reflecting surfaces; [0051]) with respect to the rotational direction, wherein the recess-projection shaped portion (Fig. 3a—element 115 and 116; [0058] and [0062]) is equidistant from two adjacent gate portions (Fig. 3a—element 114a and 114b, gates; [0053]) with respect to the rotational direction (Fig. 4—element L1 illustrates that elements 114a and 114b are equidistant from element 115). However, Hoshino does not disclose wherein a number of the gate portions is equal to a number of the reflecting surfaces. It would have been obvious to one of ordinary skill in the art before the effective filing date to duplicate a number of the gate portions, since it has been held that a mere duplication of working parts of a device involves only routine skill in the art. In re Harza 124 USPQ 378 (CCPA 1960). Hoshino does not explicitly disclose wherein, as viewed in the direction perpendicular to the rotational axis direction, each of the gate portions is provided at a position substantially midway, in the rotational direction, between two adjacent ones of the boundary virtual straight lines, and the recess-projection shaped portion is provided on a boundary virtual straight line that is equidistant from two adjacent gate portions with respect to the rotational direction. The prior art and the instant claim differ by the shape of the position of each of the gate portions and the recess-projection shaped portion. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to change the pattern in which the gate portions and the recess-projection shaped portion are arranged, since it has been held that a mere change in shape of an element is generally recognized as being within the level of ordinary skill in the art when the change in shape is not significant to the function of the combination, In re Dailey, 357 F.2d 669, 149 USPQ 47 (CCPA 1966), MPEP §2144.04(IV)(B). In the instant case, the change in shape does not appear to be significant to the function because the arrangement of the gates and the design of the molds are flexible (Hoshino, [0085]). With respect to Claim 2, Hoshino discloses the rotatable polygon mirror according to Claim 1, and further discloses wherein the recess-projection shaped portion (Fig. 3a—element 115 and 116; [0058] and [0062]) is at least one of a character, a graphic, a symbol, a one-dimensional bar code and a two-dimensional bar code (Fig. 3a and [0058]—element 115 and 116 is shaped in an arc). With respect to Claim 3, Hoshino discloses the optical deflector deflecting a laser light comprising: a rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]) molded with a resin ([0007]: plastic is injected into a mold to create the polygon mirror); and a motor (Fig. 1—element 120, motor; [0046]) configured to support the rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]) and drive the rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]) ([0049]: element 120 supports and rotates element 110), wherein the rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]) includes: a plurality of reflecting surfaces ([0050]: element 110 has four reflective sides, element 111) provided in parallel to a rotational axis direction and configured to reflect a light (Fig. 3a—element 110 has four reflecting surfaces, 111, which are parallel to the rotational axis); a first surface (Fig. 3a—element 112a, first surface; [0050]) and a second surface (Fig. 3a—element 112b, second surface; [0050]) perpendicular to the rotational axis direction (Fig. 3a—elements 112a and 112b are parallel to the rotational axis); a plurality of gate portions (Fig. 3a—element 114, gates; [0053]) provided on the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]) and being marks through which the resin is injected during molding (Fig. 3a—element 114 are injection molding marks on surface 112a) the rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]); and a recess-projection shaped (Fig. 3a—element 115, first projections; [0058]) portion (Fig. 3a—element 115 and 116; [0058] and [0062]) provided on (Fig. 3a—element 115 are disposed on element 112a) the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]), and as viewed in a direction perpendicular to the rotational axis direction having at least one shape of a recess shape recessed (Fig. 3a—element 116, depression ;[0062]) recessed in the rotational axis direction (Fig. 3a—element 116 is recessed in element 112b) from the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]) and a projection shape (Fig. 3a—element 115, first projections; [0058]) projected in the rotational axis direction (Fig. 3a—element 115 project from element 112a) from the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]), wherein each of the gate portions (Fig. 3a—element 114, gates; [0053]) has a cylindrical shape (Fig. 3a—element 114 is cylindrical), wherein, as viewed in the direction perpendicular to the rotational axis direction (Fig. 4A—viewed from above, perpendicular to the rotation direction), each of a plurality of boundary virtual straight lines (Fig. 4—elements L1 and PB) is a virtual straight line connecting (i) a rotation center of the rotatable polygon mirror (Fig. 3a—element 110c, center of the polygon mirror; [0055]) and (ii) a boundary of two adjacent (Fig. 4a—vertex 119D is positioned on an edge along which the adjacent reflecting surfaces 111B, 111D intersect) reflecting surfaces (Fig. 3A-- four reflecting surfaces; [0051]) with respect to the rotational direction, wherein the recess-projection shaped portion (Fig. 3a—element 115 and 116; [0058] and [0062]) is equidistant from two adjacent gate portions (Fig. 3a—element 114a and 114b, gates; [0053]) with respect to the rotational direction (Fig. 4—element L1 illustrates that elements 114a and 114b are equidistant from element 115). However, Hoshino does not disclose wherein a number of the gate portions is equal to a number of the reflecting surfaces. It would have been obvious to one of ordinary skill in the art before the effective filing date to duplicate a number of the gate portions, since it has been held that a mere duplication of working parts of a device involves only routine skill in the art. In re Harza 124 USPQ 378 (CCPA 1960). Hoshino does not explicitly disclose wherein, as viewed in the direction perpendicular to the rotational axis direction, each of the gate portions is provided at a position substantially midway, in the rotational direction, between two adjacent ones of the boundary virtual straight lines, and the recess-projection shaped portion is provided on a boundary virtual straight line that is equidistant from two adjacent gate portions with respect to the rotational direction. The prior art and the instant claim differ by the shape of the position of each of the gate portions and the recess-projection shaped portion. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to change the pattern in which the gate portions and the recess-projection shaped portion are arranged, since it has been held that a mere change in shape of an element is generally recognized as being within the level of ordinary skill in the art when the change in shape is not significant to the function of the combination, In re Dailey, 357 F.2d 669, 149 USPQ 47 (CCPA 1966), MPEP §2144.04(IV)(B). In the instant case, the change in shape does not appear to be significant to the function because the arrangement of the gates and the design of the molds are flexible (Hoshino, [0085]). With respect to Claim 2, Hoshino discloses the optical deflector according to Claim 3, and further discloses wherein the recess-projection shaped portion (Fig. 3a—element 115 and 116; [0058] and [0062]) is at least one of a character, a graphic, a symbol, a one-dimensional bar code and a two-dimensional bar code (Fig. 3a and [0058]—element 115 and 116 is shaped in an arc). With respect to Claim 5, Hoshino discloses the optical deflector according to Claim 3, and further discloses further comprising an elastic member (Fig. 3a—element 130, pressing member; [0069]) configured to press the rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]) from a side of the first surface (Fig. 3a—element 112a, first surface; [0050]) toward ([0069]: 130 presses 110 towards the motor shaft, 122) the motor (Fig. 1—element 120, motor; [0046]), wherein the recess-projection shaped portion (Fig. 3a—element 115 and 116; [0058] and [0062]) is provided outside a portion where the elastic member (Fig. 3a—element 130, pressing member; [0069]) presses the first surface (Fig. 3a—element 112a, first surface; [0050]) with respect to a radial direction ([0069]: element 130 presses element 110 downwards in a n area beside element 115) of the rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]). With respect to Claim 6, Hoshino discloses the optical deflector according to Claim 5, and further discloses wherein a rotor (Fig. 5—element 121, rotary shaft; [0064]) of the motor (Fig. 1—element 120, motor; [0046]) includes a rotor frame (Fig. 5—element 122a, rotor surface; [0069]). Hoshino does not explicitly disclose wherein the rotor frame includes a marker portion to adjust a phase between the rotatable polygon mirror and the rotor with the recess-projection shaped portion. It would have been obvious to one of ordinary skill in the art before the effective filing date to make the phase between the rotatable polygon mirror and the rotor adjustable, since it has been held that adjustability, where needed, involves only routine skill in the art. In re Stevens 101 USPQ 284 (CCPA 1954). With respect to Claim 7, Hoshino discloses the optical deflector according to Claim 6, and further discloses the first surface (Fig. 3a—element 112a, first surface; [0050]) and the second surface (Fig. 3a—element 112b, second surface; [0050]). Hoshino does not explicitly disclose wherein at least a part of the first surface and the second surface is transparent. However, these are known materials and known properties of plastic, and the use thereof would have been predictable to one of ordinary skill in the art. The benefits of these qualities include higher transmittance, and since it has been held that the selection of a known material based on its suitability for its intended use is within the skill of one of ordinary skill in the art Sinclair & Carroll Co. v.Interchemical Corp., 325 U.S. 327, 65 USPQ 297 (1945) See also In reLeshin, 277 F.2d 197, 125 USPQ 416 (CCPA 1960) (selection of a known plastic to make a container of a type made of plastics prior to the invention was held to be obvious). MPEP §2144.07. With respect to Claim 8, Hoshino discloses the optical scanning device (Fig. 1—element 4, scanner; [0031]) comprising: a light source (Fig.2—element 41, semiconductor laser; [0044]) configured to emit a laser light ([0044]: element 41 emits laser light); and the optical deflector (Fig. 1—element 100, light deflector; [0043]) according to Claim 3, the optical deflector (Fig. 1—element 100, light deflector; [0043]) being configured to deflect and scan the laser light ([0049]: element 100 deflects laser light in a main scanning direction) emitted from the light source (Fig.2—element 41, semiconductor laser; [0044]). With respect to Claim 9, Hoshino discloses an image forming apparatus (Fig. 1—element 1, laser printer; [0031]) for forming a toner image ([0042]: a toner image is fixed on element 33) on a recording material (Fig.1 —element 33. sheet; [0042]), the image forming apparatus (Fig. 1—element 1, laser printer; [0031]) comprising: a photosensitive member (Fig. 1—element 61, photoconductor drum; [0036]); and the optical scanning device (Fig. 1—element 4, scanner; [0031]) according to Claim 8, the optical scanning device (Fig. 1—element 4, scanner; [0031]) being configured to scan the photosensitive member (Fig. 1—element 61, photoconductor drum; [0036]) with the laser light ([0044]: element 41 emits laser light) and form an electrostatic latent image ([0039]: an electrostatic latent image is formed on element 61) on the photosensitive member (Fig. 1—element 61, photoconductor drum; [0036]). With respect to Claim 10, Hoshino discloses the rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]) molded with a resin ([0007]: plastic is injected into a mold to create the polygon mirror) comprising: a plurality of reflecting surfaces ([0050]: element 110 has four reflective sides, element 111) provided in parallel to a rotational axis direction and configured to reflect a light (Fig. 3a—element 110 has four reflecting surfaces, 111, which are parallel to the rotational axis); a first surface (Fig. 3a—element 112a, first surface; [0050]) and a second surface (Fig. 3a—element 112b, second surface; [0050]) perpendicular to the rotational axis direction (Fig. 3a—elements 112a and 112b are parallel to the rotational axis); a plurality of cylindrical shape portions (Fig. 3a—element 114, gates; [0053]) provided on (Fig. 3a—element 114 are on surface 112a) the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]); and a recess-projection shaped (Fig. 3a—element 115, first projections; [0058]) portion (Fig. 3a—element 115 and 116; [0058] and [0062]) provided on (Fig. 3a—element 115 are disposed on element 112a) the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]), and as viewed in a direction perpendicular to the rotational axis direction having at least one shape of a recess shape recessed (Fig. 3a—element 116, depression ;[0062]) recessed in the rotational axis direction from (Fig. 3a—element 116 is recessed in element 112b) the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]) and a projection shape (Fig. 3a—element 115, first projections; [0058]) projected in the rotational axis direction (Fig. 3a—element 115 project from element 112a) from the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]), wherein, as viewed in the direction perpendicular to the rotational axis direction (Fig. 4A—viewed from above, perpendicular to the rotation direction), each of a plurality of boundary virtual straight lines (Fig. 4—elements L1 and PB) is a virtual straight line connecting (i) a rotation center of the rotatable polygon mirror (Fig. 3a—element 110c, center of the polygon mirror; [0055]) and (ii) a boundary of two adjacent (Fig. 4a—vertex 119D is positioned on an edge along which the adjacent reflecting surfaces 111B, 111D intersect) reflecting surfaces (Fig. 3A-- four reflecting surfaces; [0051]) with respect to the rotational direction, wherein the recess-projection shaped portion (Fig. 3a—element 115 and 116; [0058] and [0062]) is equidistant from two adjacent cylindrical shape portions (Fig. 3a—element 114a and 114b, gates; [0053]) with respect to the rotational direction (Fig. 4—element L1 illustrates that elements 114a and 114b are equidistant from element 115). However, Hoshino does not disclose wherein a number of the cylindrical shape portions is equal to a number of the reflecting surfaces. It would have been obvious to one of ordinary skill in the art before the effective filing date to duplicate a number of the cylindrical shape portions, since it has been held that a mere duplication of working parts of a device involves only routine skill in the art. In re Harza 124 USPQ 378 (CCPA 1960). Hoshino does not explicitly disclose wherein, as viewed in the direction perpendicular to the rotational axis direction, each of the cylindrical shape portions is provided at a position substantially midway, in the rotational direction, between two adjacent ones of the boundary virtual straight lines, and the recess-projection shaped portion is provided on a boundary virtual straight line that is equidistant from two adjacent cylindrical shape portions with respect to the rotational direction. The prior art and the instant claim differ by the shape of the position of each of the cylindrical shape portions and the recess-projection shaped portion. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to change the pattern in which the cylindrical shape portions and the recess-projection shaped portion are arranged, since it has been held that a mere change in shape of an element is generally recognized as being within the level of ordinary skill in the art when the change in shape is not significant to the function of the combination, In re Dailey, 357 F.2d 669, 149 USPQ 47 (CCPA 1966), MPEP §2144.04(IV)(B). In the instant case, the change in shape does not appear to be significant to the function because the arrangement of the gates and the design of the molds are flexible (Hoshino, [0085]). With respect to Claim 11, Hoshino discloses the rotatable polygon mirror according to Claim 10, and further discloses wherein the recess-projection shaped portion (Fig. 3a—element 115 and 116; [0058] and [0062]) is at least one of a character, a graphic, a symbol, a one-dimensional bar code and a two-dimensional bar code (Fig. 3a and [0058]—element 115 and 116 is shaped in an arc). With respect to Claim 12, Hoshino discloses the optical deflector deflecting a laser light comprising: a rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]) molded with a resin ([0007]: plastic is injected into a mold to create the polygon mirror); and a motor (Fig. 1—element 120, motor; [0046]) configured to support the rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]) and drive the rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]) ([0049]: element 120 supports and rotates element 110), wherein the rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]) includes: a plurality of reflecting surfaces ([0050]: element 110 has four reflective sides, element 111) provided in parallel to a rotational axis direction and configured to reflect a light (Fig. 3a—element 110 has four reflecting surfaces, 111, which are parallel to the rotational axis); a first surface (Fig. 3a—element 112a, first surface; [0050]) and a second surface (Fig. 3a—element 112b, second surface; [0050]) perpendicular to the rotational axis direction (Fig. 3a—elements 112a and 112b are parallel to the rotational axis); a plurality of cylindrical shape portions (Fig. 3a—element 114, gates; [0053]) provided on the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]); and a recess-projection shaped (Fig. 3a—element 115, first projections; [0058]) portion (Fig. 3a—element 115 and 116; [0058] and [0062]) provided on (Fig. 3a—element 115 are disposed on element 112a) the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]), and as viewed in a direction perpendicular to the rotational axis direction having at least one shape of a recess shape recessed (Fig. 3a—element 116, depression ;[0062]) recessed in the rotational axis direction (Fig. 3a—element 116 is recessed in element 112b) from the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]) and a projection shape (Fig. 3a—element 115, first projections; [0058]) projected in the rotational axis direction (Fig. 3a—element 115 project from element 112a) from the first surface (Fig. 3a—element 112a, first surface; [0050]) or the second surface (Fig. 3a—element 112b, second surface; [0050]), wherein, as viewed in the direction perpendicular to the rotational axis direction (Fig. 4A—viewed from above, perpendicular to the rotation direction), each of a plurality of boundary virtual straight lines (Fig. 4—elements L1 and PB) is a virtual straight line connecting (i) a rotation center of the rotatable polygon mirror (Fig. 3a—element 110c, center of the polygon mirror; [0055]) and (ii) a boundary of two adjacent (Fig. 4a—vertex 119D is positioned on an edge along which the adjacent reflecting surfaces 111B, 111D intersect) reflecting surfaces (Fig. 3A-- four reflecting surfaces; [0051]) with respect to the rotational direction, wherein the recess-projection shaped portion (Fig. 3a—element 115 and 116; [0058] and [0062]) is equidistant from two adjacent cylindrical shape portions (Fig. 3a—element 114a and 114b, gates; [0053]) with respect to the rotational direction (Fig. 4—element L1 illustrates that elements 114a and 114b are equidistant from element 115). However, Hoshino does not disclose wherein a number of the cylindrical gate portions is equal to a number of the reflecting surfaces. It would have been obvious to one of ordinary skill in the art before the effective filing date to duplicate a number of the cylindrical shape portions, since it has been held that a mere duplication of working parts of a device involves only routine skill in the art. In re Harza 124 USPQ 378 (CCPA 1960). Hoshino does not explicitly disclose wherein, as viewed in the direction perpendicular to the rotational axis direction, each of the cylindrical shape portions is provided at a position substantially midway, in the rotational direction, between two adjacent ones of the boundary virtual straight lines, and the recess-projection shaped portion is provided on a boundary virtual straight line that is equidistant from two adjacent cylindrical shape portions with respect to the rotational direction. The prior art and the instant claim differ by the shape of the position of each of the cylindrical shape portions and the recess-projection shaped portion. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to change the pattern in which the cylindrical shape portions and the recess-projection shaped portion are arranged, since it has been held that a mere change in shape of an element is generally recognized as being within the level of ordinary skill in the art when the change in shape is not significant to the function of the combination, In re Dailey, 357 F.2d 669, 149 USPQ 47 (CCPA 1966), MPEP §2144.04(IV)(B). In the instant case, the change in shape does not appear to be significant to the function because the arrangement of the gates and the design of the molds are flexible (Hoshino, [0085]). With respect to Claim 13, Hoshino discloses the optical deflector according to Claim 12, and further discloses wherein the recess-projection shaped portion (Fig. 3a—element 115 and 116; [0058] and [0062]) is at least one of a character, a graphic, a symbol, a one-dimensional bar code and a two-dimensional bar code (Fig. 3a and [0058]—element 115 and 116 is shaped in an arc). With respect to Claim 14, Hoshino discloses the optical deflector according to Claim 12, and further discloses further comprising an elastic member (Fig. 3a—element 130, pressing member; [0069]) configured to press the rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]) from a side of the first surface (Fig. 3a—element 112a, first surface; [0050]) toward ([0069]: 130 presses 110 towards the motor shaft, 122) the motor (Fig. 1—element 120, motor; [0046]), wherein the recess-projection shaped portion (Fig. 3a—element 115 and 116; [0058] and [0062]) is provided outside a portion where the elastic member (Fig. 3a—element 130, pressing member; [0069]) presses the first surface (Fig. 3a—element 112a, first surface; [0050]) with respect to a radial direction ([0069]: element 130 presses element 110 downwards in a n area beside element 115) of the rotatable polygon mirror (Fig. 3a—element 110, polygon mirror; [0050]). With respect to Claim 15, Hoshino discloses the optical deflector according to Claim 14, and further discloses wherein a rotor (Fig. 5—element 121, rotary shaft; [0064]) of the motor (Fig. 1—element 120, motor; [0046]) includes a rotor frame (Fig. 5—element 122a, rotor surface; [0069]). Hoshino does not explicitly disclose wherein the rotor frame includes a marker portion to adjust a phase between the rotatable polygon mirror and the rotor with the recess-projection shaped portion. It would have been obvious to one of ordinary skill in the art before the effective filing date to make the phase between the rotatable polygon mirror and the rotor adjustable, since it has been held that adjustability, where needed, involves only routine skill in the art. In re Stevens 101 USPQ 284 (CCPA 1954). With respect to Claim 16, Hoshino discloses the optical deflector according to Claim 15, and further discloses the first surface (Fig. 3a—element 112a, first surface; [0050]) and the second surface (Fig. 3a—element 112b, second surface; [0050]). Hoshino does not explicitly disclose wherein at least a part of the first surface and the second surface is transparent. However, these are known materials and known properties of plastic, and the use thereof would have been predictable to one of ordinary skill in the art. The benefits of these qualities include higher transmittance, and since it has been held that the selection of a known material based on its suitability for its intended use is within the skill of one of ordinary skill in the art Sinclair & Carroll Co. v.Interchemical Corp., 325 U.S. 327, 65 USPQ 297 (1945) See also In reLeshin, 277 F.2d 197, 125 USPQ 416 (CCPA 1960) (selection of a known plastic to make a container of a type made of plastics prior to the invention was held to be obvious). MPEP §2144.07. With respect to Claim 17, Hoshino discloses the optical scanning device (Fig. 1—element 4, scanner; [0031]) comprising: a light source (Fig.2—element 41, semiconductor laser; [0044]) configured to emit a laser light ([0044]: element 41 emits laser light); and the optical deflector (Fig. 1—element 100, light deflector; [0043]) according to Claim 12, the optical deflector (Fig. 1—element 100, light deflector; [0043]) being configured to deflect and scan the laser light ([0049]: element 100 deflects laser light in a main scanning direction) emitted from the light source (Fig.2—element 41, semiconductor laser; [0044]). With respect to Claim 18, Hoshino discloses an image forming apparatus (Fig. 1—element 1, laser printer; [0031]) for forming a toner image ([0042]: a toner image is fixed on element 33) on a recording material (Fig.1 —element 33. sheet; [0042]), the image forming apparatus (Fig. 1—element 1, laser printer; [0031]) comprising: a photosensitive member (Fig. 1—element 61, photoconductor drum; [0036]); and the optical scanning device (Fig. 1—element 4, scanner; [0031]) according to Claim 17, the optical scanning device (Fig. 1—element 4, scanner; [0031]) being configured to scan the photosensitive member (Fig. 1—element 61, photoconductor drum; [0036]) with a laser light ([0044]: element 41 emits laser light) and form an electrostatic latent image ([0039]: an electrostatic latent image is formed on element 61) on the photosensitive member (Fig. 1—element 61, photoconductor drum; [0036]). Response to Arguments Applicant's arguments filed 3/10/2026 have been fully considered but they are not persuasive. Examiner disagrees with Applicant’s argument that it is clear that Hoshino does not disclose that the gate marks 114 are not provided at a position substantially midway, in the rotational direction, between two adjacent boundary virtual straight lines and Hoshino that does not disclose or suggest a recess-projection shaped portion provided on a boundary virtual straight line that is equidistant from two adjacent cylindrical shape or gate portions with respect to the rotational direction. However, Hoshino does disclose that the arrangement of the gates and the design of the molds are flexible (Hoshino, [0085]). Therefore, it would be obvious to one of ordinary skill in the art to rotate the ring shaped arrangement of elements 114 and 115 90 degrees, since it has been held that a mere change in shape of an element is generally recognized as being within the level of ordinary skill in the art when the change in shape is not significant to the function of the combination, In re Dailey, 357 F.2d 669, 149 USPQ 47 (CCPA 1966), MPEP §2144.04(IV)(B). Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MACKENZI BOURQUINE whose telephone number is (571)272-5956. The examiner can normally be reached Monday - Friday 8:30 - 4:30 EST. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Pinping Sun can be reached at (571) 270-1284. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /MACKENZI WADDELL/Examiner, Art Unit 2872 /WILLIAM R ALEXANDER/Primary Examiner, Art Unit 2872
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Prosecution Timeline

Aug 30, 2023
Application Filed
Nov 13, 2025
Non-Final Rejection mailed — §103
Mar 10, 2026
Response Filed
May 29, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
80%
Grant Probability
94%
With Interview (+13.4%)
3y 4m (~5m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 82 resolved cases by this examiner. Grant probability derived from career allowance rate.

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