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:
Nov. 05, 2002
Filed:
Sep. 12, 2000
Takami Takeuchi, Nagoya, JP;
Yoshinori Endo, Toyota, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
An image forming method and apparatus, wherein the charging amount that a charging device charges a photosensitive drum is controlled so as to reduce the charging amount in a period, except for the image forming period, than that during the image forming period. While the charging amount is reduced, the voltage applied to the charging device is controlled by chopping. Accordingly, mote adhesion onto the charging device and improper chopping can be effectively prevented or reduced. When print data is input from an outside source, the quantity of airflow generated by the fan is allowed to increase, and the printing operation starts after the quantity of airflow is increased. As sufficient airflow is generated inside the laser printer before the charging device starts to charge, motes and other objects existing in the laser printer can be ejected outside effectively. As a result, mote adhesion onto the charging device and improper charging can be prevented or reduced.