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:
Dec. 24, 2019
Filed:
May. 25, 2018
Susumu Narita, Tokyo, JP;
Yoshinobu Sakaue, Kanagawa, JP;
Ryo Sato, Tokyo, JP;
Koichi Murota, Tokyo, JP;
Masashi Suzuki, Saitama, JP;
Takuma Nishio, Kanagawa, JP;
Hiroaki Nishina, Tokyo, JP;
Susumu Narita, Tokyo, JP;
Yoshinobu Sakaue, Kanagawa, JP;
Ryo Sato, Tokyo, JP;
Koichi Murota, Tokyo, JP;
Masashi Suzuki, Saitama, JP;
Takuma Nishio, Kanagawa, JP;
Hiroaki Nishina, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes a latent image bearer, a latent image writing device, a developing device, a conveyance unit to convey a recording medium, a transfer device, a length data acquisition unit to obtain a length of the recording medium in a conveyance direction of the recording medium, an image forming processor to form a test pattern, and a light quantity correction calculator that acquires image density data of the test pattern and calculates a light quantity correction value to correct a light quantity. The image forming processor sets a position of the test pattern on the recording medium in the conveyance direction of the recording medium and a length of the test pattern in the conveyance direction of the recording medium based on the length of the recording medium in the conveyance direction of the recording medium obtained by the length data acquisition unit.