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. 18, 1999
Filed:
Jul. 01, 1997
Applicant:
Inventor:
Mitsuru Seto, Yamakita-machi, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430126 ; 399308 ;
Abstract
An image forming apparatus of the type transferring a toner image from an image carrier to an intermediate transfer body by primary transfer, and transferring it from the intermediate transfer body to a recording medium by secondary transfer is disclosed. Before the primary transfer, a charge of the same polarity as the charge of the toner image is deposited on the intermediate transfer body. The charge deposited on the transfer body reduces the scattering or blurring of the toner image apt to occur when toners of different colors are superposed, without deteriorating the paper-free feature of the apparatus.