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:
Mar. 25, 1980
Filed:
Dec. 05, 1977
Applicant:
Inventors:
Rudolf Holz, Schlangenbad, DE;
Helmuth Haberhauer, Taunusstein, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 / ; 118647 ; 118651 ; 355 / ;
Abstract
A process and apparatus for controlling development of electrostatic latent charge images. A development electrode is utilized both to measure a background voltage of an image-free initial portion on the surface of the recording medium and to control the development voltage in accordance with the measured background voltage.