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. 06, 2009
Filed:
Sep. 27, 2006
Kentarou Kawata, Numazu, JP;
Kentarou Kawata, Numazu, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus suppresses the deposition of transfer-residual toner on a sealing sheet and also suppresses the dropping of deposited toner therefrom, at a high temperature and in a high humidity environment. The apparatus includes a photosensitive drum, a cleaning blade for removing toner, a housing portion for housing the toner removed by the cleaning blade, and a sealing sheet for preventing the leakage of toner and performs charge elimination upstream of the sealing sheet in the direction of movement of the photosensitive drum, wherein a work function difference between the sealing sheet and the photosensitive drum is equal to or greater than 0.25 eV.