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:
May. 18, 1993
Filed:
Nov. 05, 1991
Yasuhiko Matsuda, Hanamaki, JP;
Sato Corporation, , JP;
Abstract
A thermal toner fixing device for a xerographic apparatus comprises a heat dissipation mechanism for dissipating heat accumulating in a pressure roller rotating in contact with a heat roller so as to achieve substantially uniform thermal deformation throughout the pressure roller and, as a result, uniform contact with the heat roller irrespective of the width of the paper sheet being conveyed. The device enables both wide and narrow sheets of paper to be properly conveyed with high reliability. Preferably, the heat dissipation mechanism is a heat dissipation roller in contact with the pressure roller, and the heat dissipation roller has a substantially hollow interior for the passage of circulating cooling air.