PAPER FEEDING METHOD FOR DOUBLE-SIDED IMAGE FORMATION, AND DOUBLE-SIDED IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To solve the problem that the productivity of image formation is drastically lowered in the case of performing ATS control in the conventional image forming apparatus.;SOLUTION: Such ATS control is performed that the paper feeding method is selected by comparing a one-circulation time T0 when recording paper circulates in a circular carrying path once with the sum of a non-paper detection time T1 from the point of time to start feeding the recording paper by a 2nd paper feeding means in a circular carrying part until the point of time to detect that there is no recording paper, a recording paper traveling time Tx when the recording paper travels from a 1st paper feeding means to the 2nd paper feeding means in another recording paper housing part being a switching destination and an additional time α for detecting jamming if a paper feeding path from the 1st paper feeding means to the 2nd paper feeding means in another recording paper housing part being the switching destination is longer than a paper feeding path from the 1st paper feeding means to the 2nd paper feeding means in a recording paper housing part where there is no paper when there is no paper in the recording paper housing part in the midst of paper feeding.;COPYRIGHT: (C)2003,JPO