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. 24, 1996
Filed:
Dec. 30, 1993
Takao Umeda, Mito, JP;
Toru Miyasaka, Hitachi, JP;
Osamu Namikawa, Katsuta, JP;
Isamu Komatsu, Takahagi, JP;
Tetsuya Nagata, Hitachi, JP;
Yasuo Takuma, Hitachi, JP;
Tatsuo Igawa, Kitaibaraki, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
An electrostatic recording apparatus and a management system thereof wherein the recording apparatus includes a photoconductor drum having a cap provided at an opening of the drum and a photoconductor sheet wound on a portion of the drum other than the opening, with the photoconductor drum being rotated. The cap is electrified and a capacitor is provided between the cap and a terminal and charged through the cap to maintain the cap in an electrified state. A potential of the terminal is equal to a ground potential or a potential approximating the ground potential. Further, a controller is provided for discharging the electrified electric charge of the cap in response to a discharge instruction. A managing system may be provided for judging the state of the electrostatic recording apparatus.