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. 31, 1994
Filed:
Mar. 27, 1992
Tadashi Aiura, Shimonoseki, JP;
Takahiro Nose, Shimonoseki, JP;
Shunichi Umemoto, Shimonoseki, JP;
Kenji Hayashi, Shimonoseki, JP;
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Abstract
A photoreceptor drum substrate comprising a drum of aluminum or aluminum alloy polished at the surface by centerless polishing. The photoreceptor drum substrate is manufactured by applying extrusion to a blank made of aluminum or aluminum alloy, then applying drawing to obtain a pipe material with less than 0.1% of bending to the entire length and satisfying the relation for wall thickness t, outer diameter .phi. and yield strength .sigma..sub.0.2, t.sup.2 .times..sigma..sub.0.2 /.phi..gtoreq.0.2 and then applying centerless polishing to the surface of the drum.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile