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. 20, 1993
Filed:
Nov. 01, 1991
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355285 ; 219216 ; 219543 ; 219549 ;
Abstract
A heating apparatus includes a heater, the heater including a main resistance layer and a subordinate resistance layer branched from said main resistance layer, which extend in a direction crossing with a movement direction of a recording material and which are supplied with electric power; a selector for selecting a resistance layer for supplying electric power; and a controller for controlling an effective voltage applied to said heater in accordance with selected resistance layer.