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:
Jan. 24, 1995
Filed:
Oct. 08, 1993
Nobuo Takami, Tokyo, JP;
Kazuyuki Sugihara, Fujisawa, JP;
Takayuki Maruta, Tokyo, JP;
Kazuo Nojima, Chiba, JP;
Noboru Sawayama, Tokyo, JP;
Kaoru Yoshimatsu, Kawasaki, JP;
Katsuji Watabe, Fujimi, JP;
Takuji Yoneda, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developing device for image forming equipment capable of agitating and mixing a fresh toner and a developer sufficiently is disclosed. The device eliminates a change in image density among individual copies, irregularity in density corresponding to the spiral pitch of, for example, a toner transport screw, and irregularity in density in the front-and-rear direction (axial direction of a developing sleeve) ascribable to defective agitation. To replace or clean a desire part or parts built in a developing device, the device is divided into two such that the desired parts are freely accessible. This facilitates the cleaning and replacement of such parts.