Electrophotography – Image formation – Development
Reexamination Certificate
2006-10-23
2009-02-17
Grainger, Quana M (Department: 2852)
Electrophotography
Image formation
Development
Reexamination Certificate
active
07493066
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.
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patent: 2002-296918 (2002-10-01), None
Aruga Tomoe
Ikuma Ken
Grainger Quana M
Hogan & Hartson LLP
Seiko Epson Corporation
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