Prosecution Insights
Last updated: April 19, 2026
Application No. 18/948,341

IMAGE FORMING APPARATUS

Non-Final OA §102
Filed
Nov 14, 2024
Examiner
THERRIEN, CARLA J
Art Unit
2852
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Canon Kabushiki Kaisha
OA Round
1 (Non-Final)
86%
Grant Probability
Favorable
1-2
OA Rounds
1y 7m
To Grant
91%
With Interview

Examiner Intelligence

Grants 86% — above average
86%
Career Allow Rate
544 granted / 630 resolved
+18.3% vs TC avg
Minimal +4% lift
Without
With
+4.4%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 7m
Avg Prosecution
23 currently pending
Career history
653
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
38.8%
-1.2% vs TC avg
§102
33.3%
-6.7% vs TC avg
§112
21.5%
-18.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 630 resolved cases

Office Action

§102
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 . In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 1-9 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Hirose et al. (US 2003/0185584; “Hirose”). Regarding claim 1, Hirose discloses an image forming apparatus 1 (Fig. 1) configured to form a toner image on a sheet 3 ([0055]), the image forming apparatus comprising: an image bearing member 27 configured to rotate (Fig. 2 [0058]); a developing member 31 configured to form a toner image on the image bearing member 27 by supplying toner to the image bearing member 27 (Fig. 2 [0112]); a transfer member 30 configured to transfer the toner image formed on the image bearing member 27 onto a sheet 3 (Fig. 2 [0113]); a cleaning member 51 configured to abut against a surface of the image bearing member 27 and remove toner from the surface of the image bearing member 27 (Fig. 2 [0065-0066]); a toner collecting container (housing of process cartridge 17; Fig. 2) configured to collect the toner removed from the surface of the image bearing member 27 by the cleaning member 51 ([0065-0066]); a fixing unit 18 configured to fix the toner image transferred onto the sheet 3 by the transfer member 30 to the sheet 3 (Fig. 2 [0114]); and a duct 100 disposed between the toner collecting container and the fixing unit 18, the duct forming an air passage through which air flowing toward an exterior of the image forming apparatus flows (Figs. 1-2 [0071]), wherein the duct includes a first wall portion opposed to the fixing unit 18 and a second wall portion opposed to the toner collecting container (see annotated Fig. 2 below), and wherein the first wall portion is inclined with respect to the second wall portion (Fig. 2). PNG media_image1.png 563 720 media_image1.png Greyscale [AltContent: arrow][AltContent: textbox (Second wall portion)][AltContent: textbox (First wall portion)][AltContent: connector] Regarding claim 2, Hirose discloses the image forming apparatus according to claim 1, wherein the first wall portion is inclined with respect to the second wall portion such that a distance “X” between the second wall portion and a first end portion of the first wall portion closest to a conveyance path through which a sheet 3 passes between the transfer member 30 and the fixing unit 18 is shorter than a distance “Y” between the second wall portion and a second end portion of the first wall portion farthest from the conveyance path (see partial annotated Fig. 2 immediately below). PNG media_image3.png 144 166 media_image3.png Greyscale [AltContent: arrow][AltContent: textbox (X)][AltContent: textbox (Y)][AltContent: arrow] Regarding claim 3, Hirose discloses the image forming apparatus according to claim 1, wherein the first wall portion is formed linearly when viewed in a rotational axis direction of the image bearing member (the first wall portion comprises at least four linear segments when viewed in the rotational axis direction; see Fig. 2). Regarding claim 4, Hirose discloses the image forming apparatus according to claim 1, wherein the first wall portion is formed to be curved when viewed in a rotational axis direction of the image bearing member (the overall shape of the first wall portion is curved when viewed in the rotational axis direction; see Fig. 2). Regarding claim 5, Hirose discloses the image forming apparatus according to claim 1, wherein the second wall portion extends in a vertical direction (Fig. 2). Regarding claim 6, Hirose discloses the image forming apparatus according to claim 1, wherein the fixing unit 18 includes a fixing member 41 configured to heat the toner image on the sheet (Fig. 2 [0070]), and a fixing cover configured to cover the fixing member (Figs. 2-3), and wherein the fixing cover includes an opposing surface that is opposed to the first wall portion and that extends along the first wall portion (see Fig. 2). Regarding claim 7, Hirose discloses the image forming apparatus according to claim 1, further comprising a fan (117 or 118) that is arranged on one side (left side) of the duct 100 in a rotational axis direction of the image bearing member and that is configured to blow air (Fig. 11 [0054]), wherein the duct is arranged to be overlapped with the fan when viewed in the rotational axis direction (fan 117 overlaps with at least a bottom portion of duct 100, while fan 118 overlaps with an upper portion of the first wall portion of duct 100; see Fig. 1). Regarding claim 8, Hirose discloses the image forming apparatus according to claim 1, wherein the second wall portion of the duct extends to a position “P” closer to a conveyance path through which a sheet passes between the transfer member and the fixing unit than the cleaning member when viewed in a rotational axis direction of the image bearing member (see partial annotated Fig. 2 immediately below). [AltContent: oval] Regarding claim 9, Hirose discloses the image forming apparatus according to claim 1, wherein the duct 100 is arranged on a same side as the toner collecting container with respect to a conveyance path through which a sheet passes between the transfer member and the fixing unit (duct 100 and toner collecting container of cartridge 17 are both above the conveyance path; see Fig 2). Prior Art The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Sato (US 2011/0249982) and Takeuchi (US 2010/0080591) are cited for teaching ducts meeting many of the claimed limitations corresponding to Applicant’s first embodiment. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to CARLA J THERRIEN whose telephone number is (571)272-2677. The examiner can normally be reached Monday-Friday 8 am - 4 pm 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, Stephanie Bloss can be reached at (571)272-3555. 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. /CARLA J THERRIEN/Primary Examiner, Art Unit 2852
Read full office action

Prosecution Timeline

Nov 14, 2024
Application Filed
Jan 13, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12601998
IMAGE PROCESSING APPARATUS, METHOD OF CONTROLLING IMAGE PROCESSING APPARATUS, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM
2y 5m to grant Granted Apr 14, 2026
Patent 12596321
IDENTIFICATION OF GAS CONVEYANCE MALFUNCTIONS
2y 5m to grant Granted Apr 07, 2026
Patent 12596320
CORRECTING DENSITY UNEVENNESS IN IMAGE FORMING APPARATUS
2y 5m to grant Granted Apr 07, 2026
Patent 12585220
IMAGE FORMING SYSTEM
2y 5m to grant Granted Mar 24, 2026
Patent 12585211
IMAGE FORMING APPARATUS
2y 5m to grant Granted Mar 24, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
86%
Grant Probability
91%
With Interview (+4.4%)
1y 7m
Median Time to Grant
Low
PTA Risk
Based on 630 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month