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:
Sep. 04, 2012
Filed:
Feb. 17, 2010
Tetsuro Hirota, Hadano, JP;
Masanori Horike, Yokohama, JP;
Nobuaki Kondoh, Yokohama, JP;
Osamu Endou, Yokohama, JP;
Shin Kayahara, Kamakura, JP;
Tomoko Takahashi, Yokohama, JP;
Tetsuro Hirota, Hadano, JP;
Masanori Horike, Yokohama, JP;
Nobuaki Kondoh, Yokohama, JP;
Osamu Endou, Yokohama, JP;
Shin Kayahara, Kamakura, JP;
Tomoko Takahashi, Yokohama, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
An image forming apparatus comprises a toner-bearing member that bears toner and makes the toner clouded thereon. A toner passage control device including plural widthwise lines of toner passage holes in a printing medium conveyance direction is provided. Each of the toner passage holes includes a control electrode that controls passage of the toner through each of the toner passage holes toward a printing medium. a control pulse proving device provides a control pulse to the control electrode to operate. The control pulse applied to the control electrode of the one of the plural lines is different from that applied to the control electrode of the other one of the plural lines.