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:
Sep. 01, 2020
Filed:
Dec. 12, 2018
Applicants:
Masato Tanaka, Tokyo, JP;
Keiji Kunimi, Kanagawa, JP;
Inventors:
Masato Tanaka, Tokyo, JP;
Keiji Kunimi, Kanagawa, JP;
Assignee:
RICOH COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/01 (2006.01); G03G 15/00 (2006.01); G03G 9/08 (2006.01); G03G 9/087 (2006.01); G03G 9/09 (2006.01); G03G 21/04 (2006.01);
U.S. Cl.
CPC ...
G03G 15/5062 (2013.01); G03G 9/0821 (2013.01); G03G 9/08795 (2013.01); G03G 9/08797 (2013.01); G03G 9/0926 (2013.01); G03G 15/0115 (2013.01); G03G 15/6585 (2013.01); G03G 21/04 (2013.01);
Abstract
An image forming apparatus is provided. The image forming apparatus includes an image forming unit containing a special recording material and circuitry configured to control the image forming unit to form a hardly visible image on a recording medium with the special recording material. The hardly visible image is formed of a halftone dot image comprising isolated dots in a number smaller than that of isolated dots forming a visible image having the same image area ratio as the hardly visible image.