Patent ID: 6259886
Filing Date: 2001-07-10
Classification: G03G

Abstract:
An electrophotographic printing apparatus, comprising:a timing roller which conveys a sheet sent from a sheet hopper at the predetermined timing;a register roller to convey the sheet in timed relationship with the timing at which a toner image formed on a photoreceptor drum surface reaches a transfer device; anda conveying apparatus to convey the sheet passed through the transfer device toward a fixing device;wherein when the conveying speed of the timing roller is Vt, the conveying speed of the register roller is Vr, the peripheral speed of the photoreceptor drum is V0, and the conveying speed of the conveying apparatus is Vf, each speed is set to satisfy the relationship of Vf>V0.gtoreq.Vr>Vt, and when a sheet deflection amount formed when the sheet comes into contact with the register roller, is .delta.r, the sheet deflection amount at the photoreceptor drum entry section is .delta.0, and the sheet length is Lp, each value is regulated so that the relationships of .delta.r.gtoreq.Lp ((Vr-Vt)/Vt) and .delta.0.gtoreq.Lp ((Vf-V0)/V0) are satisfied.