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:
Feb. 17, 2009
Filed:
Oct. 23, 2006
Tomoe Aruga, Komagane, JP;
Ken Ikuma, Suwa, JP;
Tomoe Aruga, Komagane, JP;
Ken Ikuma, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
The invention provides a developing device employing a liquid developer which is capable of effectively cleaning a development roller or the like having an elastic outer layer. The developing device of the invention is provided with an elastic roller such as a development roller for developing a latent image formed on an image carrier. In image forming process, toner particles uniformly dispersed in carrier are agglutinated to the elastic roller side by means of compaction. A cleaning blade is provided for cleaning the agglutinated toner particles. Assuming that an angle of a contact face of the cleaning blade relative to a perpendicular line perpendicular to a generating line of the elastic roller at a contact point where the tip end of the cleaning blade is pressed against and in contact with the elastic roller is θ and an angle of a rising contour of a deformed portion of the elastic outer layer which is deformed by the pressure of the cleaning blade against the elastic roller relative to the perpendicular line is a, a relation a>θ is established.