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:
Sep. 30, 1980
Filed:
Oct. 17, 1978
Applicant:
Inventor:
Karl Kempter, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
355 / ; 430 57 ; 430 95 ; 430133 ; 430136 ; 430135 ; 148174 ; 148175 ; 427 39 ;
Abstract
A printing drum is disclosed for electrostatic copying. The drum has a photo-electric-sensitive layer consisting of amorphous silicon advantageously containing hydrogen. The layer is designed to have a PN transition. A method is also disclosed for producing the layer by means of decomposition of a conveyed silicon-containing gas to which, if necessary, a gaseous doping material is added during a glow discharge in a heated printing drum.