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:
Nov. 16, 1999
Filed:
Jan. 30, 1998
Kaneo Yoda, Nagano, JP;
Kenjiro Yoshioka, Nagano, JP;
Hiroshi Tanaka, Nagano, JP;
Yoshiro Koga, Nagano, JP;
Kazutoshi Fujisawa, Nagano, JP;
Takayuki Shiraki, Nagano, JP;
Naoyuki Okumura, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A fixing apparatus including a heat roller having a heat source therein; and first and second pressing rollers arranged to be pressed sequentially against the heat roller beginning with a more upstream pressing roller in a direction of rotation of the heat roller, wherein when the hardness of the heat roller is Hh, the hardness of the first pressing roller is Hp1 and the ratio of the hardness of the two rollers satisfies Hr1=Hh/Hp1, the heat roller and the first pressing roller are structured in such a manner that the following condition is satisfied: Hr1.gtoreq.1.5.