Patent ID: 7434804
Filing Date: 2008-10-14
Classification: B65H

Abstract:
1. A sheet processing apparatus comprising: a conveying device that conveys sheets; a driving device that drives said conveying device and has a motor and a first transmission device for transmitting rotation from said motor to said conveying device and a second transmission device for transmitting rotation from said motor to said conveying device; a controller for controlling said driving device so that said conveying device conveys a sheet at speeds within a first speed range specified between a first maximum speed and a first minimum speed in a first state in which said first transmission device transmits rotation to said conveying device, and said conveying device conveys a sheet at speeds within a second speed range specified between a second maximum speed lower than the first maximum speed and a second minimum speed lower than the first minimum speed in a second state in which said second transmission device transmits rotation to said conveying device, and wherein the first speed range includes an overlapping range where the first speed range and the second speed range overlap.