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:
Oct. 08, 2019
Filed:
Jul. 30, 2018
Takuma Nishio, Kanagawa, JP;
Yoshinobu Sakaue, Kanagawa, JP;
Susumu Narita, Tokyo, JP;
Ryo Sato, Tokyo, JP;
Koichi Murota, Tokyo, JP;
Masashi Suzuki, Saitama, JP;
Hiroaki Nishina, Tokyo, JP;
Takuma Nishio, Kanagawa, JP;
Yoshinobu Sakaue, Kanagawa, JP;
Susumu Narita, Tokyo, JP;
Ryo Sato, Tokyo, JP;
Koichi Murota, Tokyo, JP;
Masashi Suzuki, Saitama, JP;
Hiroaki Nishina, Tokyo, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An image forming apparatus includes an image reading device; an image forming device including a photoconductor, a charger, an exposure device including a light-emitting element, a memory to store a first correction value for correction a light emission amount of the light-emitting element, and a driver to drive the light-emitting element, a developing device, a transfer device, and a fixing device. The image forming apparatus further includes a processor to calculate a second correction value for correcting the light emission amount, based on density data of image data of a predetermined pattern on a recording medium; calculate a third correction value for correcting the light emission amount, based on the first correction value and the second correction value; and determine, before calculating the third correction value, whether placement of the recording medium on the reading table is correct based on the density data.