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:
Jan. 23, 1996
Filed:
May. 24, 1994
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
A fixing unit is included in a image forming apparatus, and includes a heating roller and a pressure roller. A separating layer is formed on a surface of the heating roller, and an elastic member layer is formed on a surface of the pressure roller, and both are brought into pressure-contact with each other in a state where the elastic member layer is in elastic deformation. The heating roller and the pressure roller are rotatably supported at fixed positions by bearings, respectively. At this time L=D1/2+D2/2-B.sup.2 /4 (1/D1+1/D2), where D1 is a diameter of the heating roller, D2 is a diameter of the pressure roller, B is nip width between the rollers, and L is a center distance between the rollers is satisfied.