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. 28, 2008
Filed:
Jan. 09, 2006
Masaru Yamagishi, Kanagawa-ken, JP;
Nobuo Inoue, Kanagawa-ken, JP;
Kouki Sakamoto, Kanagawa-ken, JP;
Nobuyuki Shimodaira, Tokyo-to, JP;
Takashi Koshinuma, Chiba-ken, JP;
Yasuharu Gaman, Tokyo-to, JP;
Katsuhiko Miki, Tokyo-to, JP;
Masaru Yamagishi, Kanagawa-ken, JP;
Nobuo Inoue, Kanagawa-ken, JP;
Kouki Sakamoto, Kanagawa-ken, JP;
Nobuyuki Shimodaira, Tokyo-to, JP;
Takashi Koshinuma, Chiba-ken, JP;
Yasuharu Gaman, Tokyo-to, JP;
Katsuhiko Miki, Tokyo-to, JP;
Ricoh Co., Ltd., Tokyo, JP;
Abstract
A medium discrimination device includes a transmitted light quantity measurement device arranged to measure a transmitted light quantity in a thickness direction of a printing medium on a conveyance route, and configured to perform a measurement of the transmitted light quantity at each time the printing medium is conveyed, a measurement value memory device storing a result of the measurement performed by the transmitted light quantity measurement device, a medium setting device configured to previously set a type of printing medium to be used, a medium information memory device storing information of a transmitted light quantity assigned to each printing medium to be set by the medium setting device, and a control processing unit configured to perform paper type detection on a first printing medium, and double feed detection on following printing mediums.