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:
Dec. 01, 2015
Filed:
Feb. 25, 2015
Oki Data Corporation, Tokyo, JP;
Toshiharu Sato, Tokyo, JP;
Oki Data Corporation, Tokyo, JP;
Abstract
A development apparatus includes a developer carrier to develop an electrostatic latent image using a developer, a first and second developer supply members each to supply the developer to the developer carrier. Hs1, Δ1, t1, Hs2, Δ2, and t2 satisfy a following formula below,10≦1×(Δ1/1)+2×(Δ2/2)≦50 Herein, Hs1 is a hardness of the outer peripheral surface of the first developer supply member, t1 is a layer thickness of an elastic layer of the first developer supply member, Δ1 is an NIP amount that is determined when the first developer supply member is in press-contact with the developer carrier, Hs2 is a hardness of the outer peripheral surface of the second developer supply member, t2 is a layer thickness of an elastic layer of the second developer supply member, and Δ2 is an NIP amount that is determined when the second developer supply member is in press-contact with the developer carrier.