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:
Sep. 23, 1997
Filed:
Jun. 18, 1996
Akira Kubota, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
To provide a color image forming apparatus that can implement high speed printing and produce high quality images free from displacements caused when color toner images are superimposed one upon another. A color image forming apparatus using an intermediate transfer belt 106. The apparatus is constructed so that a cleaning blade 1191 and a drive roller 115 are arranged so as to confront the intermediate transfer belt 106 in order that a displacement caused when one color toner image is superimposed upon another can be controlled within a single image-recording dot during a primary transfer process. The apparatus is constructed such that la/l<ld.multidot.E.multidot.t/(L0.multidot..mu..multidot.n), where la (m) is the length of the intermediate transfer belt from a drive roller to a cleaning device, l (m) is the total length of the transfer belt, ld (m) is a pitch between dots developed on the latent image carrying body, E (kg/m.sup.2) is the Young's modulus of the transfer belt, t (m) is the thickness of the belt, L0 (m) is the length of a recording medium, .mu. is the frictional coefficient between the cleaning device and the transfer belt, and n (kg/m) is the line pressure of the cleaning means in contact with the transfer belt.