Title:
IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2015018168
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To enable double-sided image formation using a paper feeding part capable of feeding non-fixed size paper, and eject a sheet in which the length of the sheet cannot be determined before a branch part of conveyance for double-sided image formation without guiding to a paper inversion part.SOLUTION: When a double-sided mode and manual free size mode are set, paper length detection processing is started. If the paper length L is not determined before the switching timing between conveyance flappers 172 and 182, second conditions are not established, and a CPU 301 switches between the conveyance flappers 172 and 182 to guide the sheet in a direction of a paper conveyance path 231. Even if the paper length L is determined, when the paper length L does not satisfy the first conditions (distance between rollers Lrmax+α≤L≤length of inversion path Lpmax), the CPU 301 switches between the conveyance flappers 172 and 182 to guide the sheet in the direction of the paper conveyance path 231.
Inventors:
TAKAHASHI KEITA
MATSUMOTO HIDENORI
MATSUMOTO HIDENORI
Application Number:
JP2013146414A
Publication Date:
January 29, 2015
Filing Date:
July 12, 2013
Export Citation:
Assignee:
CANON KK
International Classes:
G03G21/14; B41J29/38; B65H7/02; B65H29/58; G03G15/00; G03G21/00
Attorney, Agent or Firm:
Role of another Shigehisa
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