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:
Feb. 13, 2007
Filed:
Jan. 15, 2004
Bing Shu, Shizuoka, JP;
Mitsuo Aoki, Shizuoka, JP;
Haruji Mizuishi, Tokyo, JP;
Mikio Ishibashi, Kanagawa, JP;
Masaru Tanaka, Kanagawa, JP;
Shinji Tamaki, Tokyo, JP;
Hiroshi Mizusawa, Tokyo, JP;
Shin Hasegawa, Chiba, JP;
Bing Shu, Shizuoka, JP;
Mitsuo Aoki, Shizuoka, JP;
Haruji Mizuishi, Tokyo, JP;
Mikio Ishibashi, Kanagawa, JP;
Masaru Tanaka, Kanagawa, JP;
Shinji Tamaki, Tokyo, JP;
Hiroshi Mizusawa, Tokyo, JP;
Shin Hasegawa, Chiba, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
The image forming apparatus comprises a photoconductor, a latent electrostatic image forming unit for forming a latent electrostatic image on the photoconductor, a developing unit for developing the latent electrostatic image using a developer comprising a toner to form a visible image, a transfer unit for transferring the visible image to a recording medium, a cleaning unit for removing the developer remained on the photoconductor surface and a developer amount detection unit for detecting developer amount adhering to the photoconductor surface by a reflecting photosensor, wherein the developer stirring time per copy when one copy is made from an original, is 2 to 6 times the developer stirring time per copy when two or more copies are made from the original, wherein the toner comprises at least a binder resin and a wax, and the dynamic frictional coefficient of the toner is 0.15 to 0.45.