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:
Aug. 18, 1998
Filed:
Jul. 31, 1996
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A charging device is designed in the following manner. Firstly, an optimization of the shape and size of an MC case is performed based on a film thickness and process speed of a photoreceptor (S1). Then, optimization of grid conditions (S2), saw-tooth conditions (S3), a distribution ratio of discharge current (S4) and a grid voltage (S5) are performed respectively, and a minimization of the discharge current is performed (S6). Lastly, surrounding conditions are taken into consideration (S7). The order of performing the processes in S1.about.S6 is not specified. By designing the charging device so as to have at least one feature obtained by the processes in S2.about.S7, a stable discharging operation, a uniform charging operation on the surface of the photoreceptor, reduction in amount of ozone generated when discharging, and reduced size and cost of the charging device can be achieved, and the charging device can be designed effectively in a short period of time.