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:
Apr. 20, 1999
Filed:
Nov. 25, 1997
Applicant:
Inventors:
Ronald Harold Levin, Boulder, CO (US);
Scott Thomas Mosier, Boulder, CO (US);
Catherine Mailhe Randolph, Niwot, CO (US);
Assignee:
Lexmark International, Inc., Lexington, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430 78 ;
Abstract
Titanium dioxide added to oxo-titanyl phthalocyanine in a resin binder forming a charge generation layer having significantly improved dark decay and sensitivity. Added sensitivity is obtained when the X-form is precipitated from a dichloromethane/trifluoroacetic acid/oxo-titanyl phthalocyanine mixture by adding a water/methanol mixture containing titanium dioxide.