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:
Mar. 09, 2004
Filed:
Oct. 10, 2002
Yuji Nakayama, Chiba, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a cleaning blade and an image-forming apparatus using a cleaning means having the cleaning blade, the cleaning blade is composed of an edge portion which is brought into contact with the image-bearing member and a support portion which brings the edge portion into contact with the image-bearing member, where the value at a peak temperature (t1) of a loss tangent of the edge portion, tan &dgr;1, is smaller than the value at a peak temperature (t2) of a loss tangent of the support portion, tan &dgr;2, and a curve which represents the temperature dependence of the loss tangent of the edge portion and a curve which represents the temperature dependence of the loss tangent of the support portion intersect at t1° C. or above to t1+40° C. or below. These can maintain the surface state of a photosensitive member that does not cause any smeared images or melt adhesion of toner even when non-magnetic toners are used, promising a great improvement in reliability, and also can deal with any situations even when the productivity has dramatically been advanced.