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:
Dec. 01, 1987
Filed:
Feb. 11, 1986
Applicant:
Inventors:
Alan L Koelling, San Jose, CA (US);
William J Murphy, San Jose, CA (US);
Edward F Mayer, San Jose, CA (US);
Assignee:
Ricoh Systems, Inc., San Jose, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430 85 ; 430 95 ; 430128 ;
Abstract
An arsenic-selenium photoreceptor is provided wherein said photoreceptor is characterized by a gradient concentration of arsenic increasing from the bottom surface to the top surface of the photoreceptor such that the arsenic concentration is about 5 wt. % at a depth of about 5 to 10 microns from the top surface of the photoreceptor and is about 30 to 40 wt. % at the top surface of the photoreceptor.