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:
Jan. 23, 2007
Filed:
Jun. 24, 2005
Tomoyuki Ichikawa, Numazu, JP;
Satoshi Mochizuki, Numazu, JP;
Yasuaki Iwamoto, Numazu, JP;
Hideki Sugiura, Fuji, JP;
Tadao Takikawa, Kyoto, JP;
Toshihiko Kinsho, Kyoto, JP;
Hidetoshi Noda, Kyoto, JP;
Shuhei Yahiro, Kyoto, JP;
Tomoyuki Ichikawa, Numazu, JP;
Satoshi Mochizuki, Numazu, JP;
Yasuaki Iwamoto, Numazu, JP;
Hideki Sugiura, Fuji, JP;
Tadao Takikawa, Kyoto, JP;
Toshihiko Kinsho, Kyoto, JP;
Hidetoshi Noda, Kyoto, JP;
Shuhei Yahiro, Kyoto, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner capable of making compatible a transferring property, a fixing property and a cleaning property and forming a high-precision image. The toner comprises a binder resin and a colorant and is characterized in that the average circularity of the toner is at least 0.95, a ratio (D/S) between the total projection area (S) and the contact area (D) of the toner is 15% to 40%, and the contact area (D) is a total contact area between the toner and an object surface. The toner has such a shape as to be able to contact a latent image carrier with a proper contact area, has a high transferring rate and can prevent transferring dust.