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:
Mar. 27, 2007
Filed:
Feb. 17, 2005
Hirotaka Ohshika, Tokyo, JP;
Hirotaka Ohshika, Tokyo, JP;
Oki Data Corporation, Tokyo, JP;
Abstract
A developing apparatus includes a developing roller and a sealing member. The developing roller applies toner to an electrostatic latent image to develop the electrostatic latent image. The sealing member presses the developing roller to seal the developer. The apparatus includes a developing roller with a shaft and a resilient layer formed on the shaft. The developing roller rotates about the shaft. The resilient layer covers the outer circumferential surface of the developing roller and is in contact with the sealing member. The resilient layer has a diameter that becomes larger nearer longitudinal ends of the developing roller. The diameter has a maximum value and a minimum value. The difference between the maximum value and the minimum value is such that 10 μm<ΔΦ<300 μm, where ΔΦ is a difference between the maximum value and the minimum value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile