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:
Jun. 16, 1992
Filed:
Jun. 26, 1989
Applicant:
Inventors:
Ekkehard Niemann, Maintal, DE;
Roland Herkert, Frankfurt am Main, DE;
Assignee:
Licentia Patent-Verwaltungs-GmbH, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C / ; C23C / ;
U.S. Cl.
CPC ...
20419216 ; 20419215 ; 20419222 ; 20419226 ;
Abstract
A method of providing an amorphous carbon cover layer on an electrophotographic recording material, including the steps of (a) providing a substrate which is an electrophotographic recording material, (b) maintaining the substrate in an atmosphere comprised of argon, hydrogen, and C.sub.2 F.sub.6, and (c) simultaneously with step (b), depositing amorphous fluorinated, hydrogenated carbon on the substrate by direct current magnetron cathode sputtering of glasslike carbon to provide an amorphous carbon cover layer which is transparent, hydrophobic, and has a Vickers hardness of greater than 2000.