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. 16, 2000
Filed:
May. 11, 1999
Applicant:
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
399333 ; 399 69 ; 399330 ; 399335 ; 430124 ;
Abstract
An image formation apparatus includes an image fixing roller for performing thermal image fixing, which image fixing roller includes an exothermic phase transition layer capable of performing reversible phase transition from an amorphous state to a crystalline state and vice versa, with liberation of crystallization heat at the phase transition from the amorphous state to the crystalline state, and the crystallization heat is used for increasing the temperature elevation rate for the image fixing roller.