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:
Feb. 16, 1999
Filed:
Feb. 23, 1996
Applicant:
Inventor:
Hidehiro Wakamiya, Chiba, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
355 69 ; 216216 ; 216490 ;
Abstract
In order to reduce a temperature change of a fixing unit and to prevent a reduction of the life of a switching device for controlling the current supply of a heater of the fixing unit and to reduce flickering noises, an on/off control of the heater is executed in every predetermined period and the order of ON and OFF states of the heater is changed every period when the fixing unit is heated.