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:
Apr. 18, 1995
Filed:
Feb. 25, 1994
Toshiyuki Fukami, Osaka, JP;
Masashi Tanaka, Osaka, JP;
Mita Industrial Co., Ltd., Osaka, JP;
Abstract
The image forming apparatus in this invention uses a positive corona discharger as a main charger. A photosensitive material having a charge accepting ability per run-off current of at least 40 V/.mu.A from a corona discharger (measured by using a discharge length of 230 mm and by taking the peripheral speed of the photosensitive material as 48 mm/sec) is used, and a DC voltage is impressed on the positive corona discharger so that the average ozone concentration of an atmosphere of the photosensitive material 2 ppm or less and the ozone concentration immediately below the corona discharger becomes 5 ppm or less to perform main charging. According to this apparatus, the amount generated of ozone can be decreased, and charging unevenness can be prevented to form a good image.