Prosecution Insights
Last updated: April 19, 2026
Application No. 19/036,189

AIR DUCT FOR AN ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE

Non-Final OA §102§103
Filed
Jan 24, 2025
Examiner
BRASE, SANDRA L
Art Unit
2852
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Lexmark International Inc.
OA Round
1 (Non-Final)
92%
Grant Probability
Favorable
1-2
OA Rounds
1y 10m
To Grant
90%
With Interview

Examiner Intelligence

Grants 92% — above average
92%
Career Allow Rate
938 granted / 1021 resolved
+23.9% vs TC avg
Minimal -2% lift
Without
With
+-2.3%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 10m
Avg Prosecution
18 currently pending
Career history
1039
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
41.9%
+1.9% vs TC avg
§102
31.4%
-8.6% vs TC avg
§112
7.6%
-32.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1021 resolved cases

Office Action

§102 §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 . Claim Rejections - 35 USC § 102 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. 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 1 is rejected under 35 U.S.C. 102(a)(1) as being anticipated by Yoshioka et al. (US 2019/0384216). Yoshioka et al. (…216) disclose an imaging system (figure 5), comprising: a rotatable photoconductive drum (101) having an outer surface; a rotatable developer roll (121) having an outer surface in contact with the outer surface of the photoconductive drum for supplying toner to the outer surface of the photoconductive drum ([0038]; [0076]; and figure 5); a rotatable charge roll (103) having an outer surface in contact with the outer surface of the photoconductive drum for electrically charging the outer surface of the photoconductive drum ([0037]; [0075]; and figure 5); and an air duct (72) having at least one outlet positioned to direct forced air flowing through the air duct to the outer surface of the photoconductive drum for indirectly cooling the developer roll without directing forced air from the air duct directly onto the outer surface of the developer roll ([0006]; [0049]; [0075]; [0079]-[0081]; and figure 5) [see Applicant’s claim 1]. 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. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 2-6 are rejected under 35 U.S.C. 103 as being unpatentable over Yoshioka et al. (US 2019/0384216) in view of Oya (US 2017/0017200). Yoshioka et al. (…216) disclose an imaging system (figure 5), comprising: a rotatable photoconductive drum (101) having an outer surface; a rotatable developer roll (121) having an outer surface in contact with the outer surface of the photoconductive drum for supplying toner to the outer surface of the photoconductive drum ([0038]; [0076]; and figure 5); a rotatable charge roll (103) having an outer surface in contact with the outer surface of the photoconductive drum for electrically charging the outer surface of the photoconductive drum ([0037]; [0075]; and figure 5); and an air duct (72) having at least one outlet positioned to direct forced air flowing through the air duct to the outer surface of the photoconductive drum facilitating a transfer of heat generated by friction between the developer roll and a contact member from the developer roll to the photoconductive drum. ([0006]; [0049]; [0075]; [0079]-[0081]; and figure 5) [see Applicant’s claim 4]. The air duct does not direct forced air directly onto the outer surface of the developer roll ([0006]; [0075]; [0079]-[0081]; and figure 5) [see Applicant’s claim 5]. However, Yoshioka et al. (…216) does not disclose the claimed end seal and the claimed imaging basket. Oya (…200) discloses an imaging system including a developer roll (22) and an end seal (30) having a curved rotary seal portion in contact with the outer surface of the developer roll near an axial end of the developer roll ([0041]; and [0053]-[0054]) [see Applicant’s claims 2 and 4]. The imaging system further comprising: an imaging basket (27) having a positioning slot configured to receive a replaceable developer unit (7) that includes the developer roll (22), wherein an air duct (24) is positioned on the imaging basket ([0041]-[0044]; and figures 2A and 2B) [see Applicant’s claims 3 and 6]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have the claimed end seal, since as disclosed by Oya (…200), it is well known in the art to have such an end seal so as to prevent toner leakage. Moreover, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have the claimed imaging basket, as disclosed by Oya (…200), such is well known in the art to mount replaceable units. Inquiry Any inquiry concerning this communication or earlier communications from the examiner should be directed to SANDRA BRASE whose telephone number is (571)272-2131. The examiner can normally be reached M-F. 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, Walter Lindsay can be reached at 571-272-1674. 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. /SANDRA BRASE/Primary Examiner, Art Unit 2852 January 24, 2026
Read full office action

Prosecution Timeline

Jan 24, 2025
Application Filed
Jan 24, 2026
Non-Final Rejection — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12602006
CARTRIDGE AND IMAGE FORMING APPARATUS
2y 5m to grant Granted Apr 14, 2026
Patent 12601999
IMAGE FORMATION ADJUSTMENT METHOD AND IMAGE FORMING APPARATUS
2y 5m to grant Granted Apr 14, 2026
Patent 12596325
PROCESS CARTRIDGE
2y 5m to grant Granted Apr 07, 2026
Patent 12578677
PROCESS CARTRIDGE
2y 5m to grant Granted Mar 17, 2026
Patent 12578667
CHARGING ROLL FOR ELECTROPHOTOGRAPHIC MACHINE
2y 5m to grant Granted Mar 17, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
92%
Grant Probability
90%
With Interview (-2.3%)
1y 10m
Median Time to Grant
Low
PTA Risk
Based on 1021 resolved cases by this examiner. Grant probability derived from career allow rate.

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