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:
Apr. 04, 1989
Filed:
Jan. 13, 1987
Masaaki Hiro, Kanagawa, JP;
Toshiyuki Yoshihara, Mitaka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electrophotographic photosensitive member is provided which has an electroconductive substrate and a photosensitive layer, said photosensitive layer containing at least one of (I) polymethyl methacrylates having a molecular weight of 28.times.10.sup.4 or lower, preferably 1.0.times.10.sup.4 to 28.times.10.sup.4 and at least one of (II) polymethyl methacrylates having a molecular weight of 50.times.10.sup.4 to 250.times.10.sup.4, preferably 100.times.10.sup.4 to 250.times.10.sup.4, said polymethyl methacrylate (II) being contained at a proportion of 0.1 part by weight to 30 parts by weight in the composition consisting of the polymethyl methacrylates (I) and (II).