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. 07, 1984
Filed:
Feb. 16, 1982
Applicant:
Inventors:
Jack P Chang, Boulder, CO (US);
Marc L Steinbrecher, Boulder, CO (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 / ; 355 / ; 355 77 ; 219216 ; 432 60 ;
Abstract
An early roll closure method and apparatus associated with an electrophotographic or xerographic device for fixing a toner image onto a copy sheet by application of heat and pressure. A lower closing force is exerted on the fuser rollers during early roll closure than when fixing an image to a copy sheet. The use of a backup roll made of bare metal facilitates this technique. This early roll closure method also allows the temperature of the heated fuser roll to be reduced along the entire circumference. The early roll closure is only allowed to occur on the first sheet of a copy or fusing run.