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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.:

US 6619776 B1

PDFFull Text
Date of Patent:
Sep. 16, 2003

Filed:

Mar. 29, 2002

Image forming device capable of detecting existence of ink and ink cartridge with high accuracy

Applicant:
Inventors:

Masatoshi Yoshiyama, Nagoya, JP;

Atsushi Murakami, Nagoya, JP;

Tetsuya Ouchi, Nagoya, JP;

Kazuhiro Hayamizu, Aichi-ken, JP;

Assignee:

Brother Kogyo Kabushiki Kaisha, Aichi-ken, JP;

Attorney:

Oliff & Berridge, PLC

Primary Examiner:

Craig Hallacher

Assistant Examiner:

Charles W Stewart, Jr

Int. Cl.
CPC ...
B41J 2/195 ; B41J 2/175 ;
U.S. Cl.
CPC ...
B41J 2/195 ; B41J 2/175 ;
Abstract

In a calibration data input process, a carriage is moved toward an ink sensor to a prescribed position while the ink sensor detecting levels of reflected light. Then the amount of reflected light is read for over a range wider than the width of the carriage including a theoretical detecting position P An actual detecting position P is found based on the level of reflected light. The difference between the theoretical detecting position P and the actual detecting position P is calculated and is stored as the calibration value &agr; in a first calibration data memory M . Accordingly, the actual detecting position P is set as P ±&agr;. The calibration value &agr; is used in a calibration process to calibrate the detecting position, so that the level of reflected light can be detected with accuracy.

Find Patent Forward Citations

Yoshiyama, Masatoshi. (2003). Image forming device capable of detecting existence of ink and ink cartridge with high accuracy (U.S. Patent No. 6619776). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6619776

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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