The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 13, 1993
Filed:
Jun. 12, 1992
Edwin A Hediger, Fairport, NY (US);
John R Thompson, Webster, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
An image forming apparatus includes an image member, for example, an endless web photoconductor, and a transfer member, for example, a transfer drum. The endless web is driven by a frictional engagement with a drive roller. A web drive output roller fixed to and rotatable with the drive roller in turn drives an idler roller which drives a drive belt positioned around the idler roller and a transfer drive member. The transfer drive member is fixed with respect to the transfer drum and rotates the transfer drum. The outside diameter of the transfer drive member is maintained equal to that of the transfer drum despite varying ambient conditions, by employing similar materials, for example, employing a similar thickness of polyurethane as the outside layer of the transfer drive member. Thus, the peripheral speed of the transfer drum stays the same as the image member despite a varying outside diameter of the transfer drum as ambient conditions vary.