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:
Dec. 14, 1993
Filed:
Jul. 31, 1992
Takashi Bisaiji, Yokohama, JP;
Kouji Hayashi, Yokohama, JP;
Noboru Sawayama, Tokyo, JP;
Takeyoshi Sekine, Tokyo, JP;
Takayuki Maruta, Tokyo, JP;
Norimitu Kikuchi, Yokohama, JP;
Tetsuro Miura, Tokyo, JP;
Kazunori Bannai, Tokyo, JP;
Kazunari Yamada, Tokyo, JP;
Nobuhiro Nakayama, Susono, JP;
Nobuyuki Koinuma, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Image forming equipment having an image carrier and a developer carrier located face-to-face and forming an AC-superposed DC electric field between them to develop a latent image electrostatically formed on the image carrier. Sensors responsive to image forming conditions are provided and protected from noise ascribable to an AC component included in the electric field in the event when the sensors operate.