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:
Jul. 14, 1998
Filed:
Feb. 04, 1997
Applicant:
Inventors:
Shirou Wakahara, Osaka, JP;
Kazuya Masuda, Nara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ; B41J / ;
U.S. Cl.
CPC ...
347141 ; 347 55 ;
Abstract
An image forming apparatus includes: an opposing electrode disposed facing a supporting device; a control electrode disposed between the supporting device and the opposing electrode and having a plurality of gates which form passages for the developer particles; a controlling device which generates a predetermined potential difference between the supporting device and the opposing electrode, supplies a voltage to the control electrode, and, by varying the potential applied to the control electrode, controls passage of the gates for the developer particles; and a plurality of voltage supplying device to supply voltages to the control electrode.