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. 30, 1998
Filed:
Oct. 02, 1997
Applicant:
Inventors:
Sterritt Ray Fuller, Jr, Boulder, CO (US);
Ronald Harold Levin, Boulder, CO (US);
Jennifer Kaye Neely, Arvada, CO (US);
Assignee:
Lexmark International, Inc., Lexington, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; G03G / ;
U.S. Cl.
CPC ...
430135 ; 430 78 ; 540141 ;
Abstract
Type I titanyl phthalocyanine is mixed with a solution of one part dihaloacetic acid and four parts methylene chloride by volume. This is then added to a solution of equal parts by volume of water and methanol, and the recovered phthalocyanine is washed. The resulting polymorph has improved photoresponsive speed. A photoconductor employing the polymorph can be an anodized aluminum drum having a coating of the polymorph in a resin binder, with a further coating of a known charge transport material in a resin binder.