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:
Oct. 30, 2007
Filed:
Oct. 24, 2005
Hideaki Hasegawa, Meridian, ID (US);
Keiji Okano, Sunto-gun, JP;
Hideaki Hasegawa, Meridian, ID (US);
Keiji Okano, Sunto-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A developer regulating member abutting against a developer carrying member carrying a mono-component developer to regulate the layer thickness of the developer on the developer carrying member has a supported portion supported by a support member, and an abutting portion abutting against the developer carrying member, the surface roughness parameters of this abutting portion satisfying the following expressions (1) to (5):0.30≦≦0.170  (1)Rpk≦2.0  (2)Rp≦5.0  (3)0.10≦(100−)/100≦1.30  (4)Rpk<Rvk,  (5)where Sm is a mean spacing [mm] of profile irregularities prescribed by JIS-B0601-1994, Rp is a maximum profile peak height [μm] prescribed by ISO4287-1997, Rpk is an initial wear height [μm] prescribed by DIN4776, Rvk is an oil retaining depth [μm] prescribed by DIN4776, and Mris a profile bearing length ratio 2 [%] prescribed by DIN4776.