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:
Jan. 26, 2010
Filed:
Jun. 20, 2006
Nobuyuki Hatasa, Kawasaki, JP;
Kenjiro Watanabe, Tokyo, JP;
Kenji Kitabatake, Kawasaki, JP;
Kimiyuki Hayasaki, Yokohama, JP;
Takayuki Ochiai, Tokyo, JP;
Nobuyuki Hatasa, Kawasaki, JP;
Kenjiro Watanabe, Tokyo, JP;
Kenji Kitabatake, Kawasaki, JP;
Kimiyuki Hayasaki, Yokohama, JP;
Takayuki Ochiai, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A variation in brightness among light emitting portions provided in a plurality of liquid containers can be reduced to decrease power required to drive the light emitting portions, while allowing the light emitting portions to appropriately function as reporting units. Thus, to illuminate the light emitting portions provided in the plurality of ink tanks, a driving pulse for each of the plurality of light emitting portions is modulated to control rates of a light emission period and a light emission halted period during a unit time. Further, the light emission period of at least one of the plurality of light emitting portions overlaps the light emission halted period of at least another one of the plurality of light emitting portions.