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:
May. 27, 2008
Filed:
Jun. 13, 2005
Keiichi Taguchi, Nagano-ken, JP;
Yoichi Yamada, Nagano-ken, JP;
Keiichi Taguchi, Nagano-ken, JP;
Yoichi Yamada, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
In a case where there are developers belonging to Life Rankrepresenting a service life substantially as long as that of a fresh developer (Step S), and the developers includes one which is ready to print (Step S), it is determined that image formation can be performed without performing a preparatory operation (Step S). In a case where there is no print-ready developer but a developer which requires an agitation operation of rotating a developing roller by a predetermined quantity (Step S), the agitation operation is performed on the developer (Step S) so as to make the developer in a print-ready state. In a case where the developer cannot be made print-ready by the agitation operation, a density control operation for adjusting operating conditions of an apparatus is performed (Step S). Thus is obviated an unnecessary operation. The developer subjected to a predetermined print preparatory process is used in a printing operation so that an image of good quality may be formed. In a case where no Rank-developer is available but a Rank-developer, deteriorated to a degree, is available, the same procedure is taken.