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:
Mar. 27, 2018
Filed:
Mar. 30, 2017
Kyocera Document Solutions Inc., Osaka, JP;
Ai Takagami, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
An image forming apparatus includes a high voltage generating circuit, a voltage controller, a current detector, and a recovery process controller. If two inflection points (O and P) exist, which exist on a characteristic curve indicating a relationship between the voltage value and the current value when the frequency of the AC voltage is set as a first frequency or when a photosensitive drum is rotated at a first linear speed, the recovery process is performed if a potential difference between a first inter-inflection-point voltage (OP) between inflection points and a second inter-inflection-point voltage (OP') between inflection points (O′ and P′) when setting a second frequency different from the first frequency, or a potential difference between the first voltage and a third inter-inflection-point voltage (OP″) between inflection points (O″ and P″) when setting a second linear speed different from the first linear speed becomes a predetermined value or less.