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:
Aug. 03, 2010
Filed:
Aug. 30, 2006
Muneharu Itoh, Tokyo, JP;
Hiroto Kidokoro, Tokyo, JP;
Muneharu Itoh, Tokyo, JP;
Hiroto Kidokoro, Tokyo, JP;
Zeon Corporation, Tokyo, JP;
Abstract
An image forming method using a cleaning blade which prevents the spherical toner to pass through a gap between the blade and a photosensitive member and which has durability so as to be less worn away or chipped, wherein it is possible to maintain cleaning performance over a long term even in high-speed printing using spherical toner, and a non-transferred toner and external additives dropping out from colored particles less causes filming on the photosensitive member and less gives damage to the surface of the photosensitive member, is provided. A method of forming an image using a toner having an average circularity of 0.95 to 0.998 to perform developing, transferring, fixing and cleaning for removing the toner remaining on the photosensitive member after the transferring by a cleaning bladeabutting on the photosensitive member, wherein an abutting portion of the cleaning bladeon the photosensitive member has an indentation modulus (A) of 5 to 15 KPa at an indenting load of 10 mN and 23° C., a ratio of the modulus (A) to an indentation modulus (B) at an indenting load of 100 mN and 23° C. of 1.1 to 1.8, and a loss tangent (tan δ) of the cleaning blade at 20 to 50° C. in the range from 0.01 to 0.1.