Patent ID: 7444115

Claim:
A two-side image forming apparatus comprising: a first sheet-transferring path, for use in one-side image formation, for transferring, to a printed sheet storage section via an image transcribing section, a sheet supplied from an unprinted sheet storage section; a second sheet-transferring path, connected to the first sheet-transferring path, for supplying a turned-over one-side printed sheet to the image transcribing section, an intermediate roller provided along the second sheet-transferring path; a resist roller for synchronizing a timing at which a sheet is transferred onto the first sheet-transferring path, and a controller controlling concurrent transfer of a plurality of sheets in an overall sheet-transferring path when performing two-side image forming operation, the overall sheet-transferring path including the first sheet-transferring path and the second sheet-transferring path, wherein the controller resumes a rotation of the intermediate roller and a rotation of the resist roller so that the intermediate roller and the resist roller start at the same time to transfer the sheets to the second sheet-transferring path and the first sheet-transferring path, respectively.