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:
Jun. 10, 2008
Filed:
Oct. 17, 2005
Yasuo Kotaki, Yokohama, JP;
Keisuke Matsuo, Yokohama, JP;
Kenji Kitabatake, Kawasaki, JP;
Hiromasa Amma, Kawasaki, JP;
Naoki Tashiro, Kawasaki, JP;
Yasuo Kotaki, Yokohama, JP;
Keisuke Matsuo, Yokohama, JP;
Kenji Kitabatake, Kawasaki, JP;
Hiromasa Amma, Kawasaki, JP;
Naoki Tashiro, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A structure for informing a state of the ink tank by a light emitting section such as LED, capable of displaying such information at a position easily visible by the user and favorably sending the emitted light both to the user and a light receiver section on the printer side without needing electric wiring which may disturb the user's visibility or manipulation. The light emitting section is separated from the display section and a light guiding section is provided between the both. A member for suitably limiting the emission of light is provided in the display section. Thereby, it is possible to dispose the display section at the best position without needing the electric wiring on the ink tank and obtain a preferable light volume suitable both for the improvement in user's visibility and the stability of the operation of the light receiving section.