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. 12, 2011
Filed:
May. 22, 2009
Kumiko Hatakeyama, Sagamihara, JP;
Toshiyuki Kabata, Yokohama, JP;
Kunio Hasegawa, Isehara, JP;
Masahide Yamashita, Tokyo-to, JP;
Kumiko Hatakeyama, Sagamihara, JP;
Toshiyuki Kabata, Yokohama, JP;
Kunio Hasegawa, Isehara, JP;
Masahide Yamashita, Tokyo-to, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus including an image bearing member that bears a latent electrostatic image on the surface thereof, a charging device that uniformly charges the surface of the image bearing member, an irradiation device that irradiates the surface of the image bearing member to form the latent electrostatic image thereon, a development device that develops the latent electrostatic image on the surface of the image bearing member with toner to form a toner image thereon, a transfer device that transfers the toner image to a transfer body, a cleaning device including a cleaning blade that removes residual toner remaining on the surface of the image bearing member with the cleaning blade, a protective agent application device that applies a protective agent containing zinc stearate and zinc palmitate to the surface of the image bearing member, wherein the ratio of the zinc stearate and the zinc palmitate is from 66:34 to 40:60 by weight.