Invention Grant
- Patent Title: Image forming apparatus and image forming method
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Application No.: US17528195Application Date: 2021-11-17
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Publication No.: US11945677B2Publication Date: 2024-04-02
- Inventor: Suguru Masunaga
- Applicant: Suguru Masunaga
- Applicant Address: JP Kanagawa
- Assignee: RICOH COMPANY, LTD.
- Current Assignee: RICOH COMPANY, LTD.
- Current Assignee Address: JP Tokyo
- Agency: XSENSUS LLP
- Priority: JP 20197167 2020.11.27
- Main IPC: B65H43/04
- IPC: B65H43/04 ; B41J11/42 ; B41J29/38 ; B65H20/02

Abstract:
An image forming apparatus includes a sheet conveyance device; an image forming device including a sheet conveyance roller and a pressure roller; a memory; and a controller. The memory stores profile data indicating variation in conveyance amount in a circumferential direction due to eccentricity of the conveyance roller. The controller calculates, in intermittent conveyance processing, a correction value based on corresponding profile data for each of positions included in a width of an image to be formed in next image forming processing, the correction value being a difference between a predetermined conveyance amount and an actual conveyance amount; corrects a reference amount of rotation by a representative value of calculated correction values to calculate a corrected amount of rotation, the reference amount being an ideal amount of rotation of the conveyance roller that conveys a sheet by the predetermined conveyance amount; and rotates the conveyance roller by the corrected amount.
Public/Granted literature
- US20220169476A1 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD Public/Granted day:2022-06-02
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