Patent ID: 7616921
Filing Date: 2009-11-10
Classification: G03G

Abstract:
1. An intermediate sheet conveying device disposed between an image forming apparatus main body and a post-processing device, that receives a sheet on which a toner image has been heat-fixed by a heat-fixing unit of an image forming apparatus main body, and delivers the sheet to a subsequent post-processing device, the device comprising: a first pair of conveying rollers each of which is a single roller having the same diameter throughout a width for passing a sheet and is disposed at least in a predetermined section which is on a receiving side for receiving a sheet from the image forming apparatus main body; a second pair of conveying rollers each of which is a single roller having the same diameter throughout the width for passing the sheet and is disposed at downstream of the first pair of conveying rollers in a sheet conveying direction within the predetermined section; wherein the first and second pairs of conveying rollers being made of a material with a thermal conductivity in a range from 0.01 to 1.0 W/(m·K); a sheet conveying guide provided between the first pair of conveying rollers and the second pair of conveying rollers and having a sheet-passing surface made in the same shape throughout the width for passing the sheet in the predetermined section, a sheet-passing surface of the same shape throughout the width for passing a sheet; and a cooling fan provided at upper side of the first pair of conveying rollers.