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:
Aug. 03, 2004
Filed:
Jun. 26, 2000
Applicant:
Inventor:
Noboru Sawayama, Tokyo, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/503 ; G03G 1/308 ;
U.S. Cl.
CPC ...
G06F 1/503 ; G03G 1/308 ;
Abstract
An electrophotographic image formation apparatus, in which there is used a function-separated type layered photoconductor including an electroconductive support on which an undercoat layer, a charge generation layer, and a charge transport layer are successively overlaid, with the thickness of the undercoat layer, Tul, and the thickness of the charge transport layer, Tctl, satisfying a particular relationship of Tul>Tctl/3 or Tul>Tctl/2.
Sawayama, Noboru. (2004). Electrophotographic image formation apparatus (U.S. Patent No. 6771389). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6771389
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile