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. 04, 1991
Filed:
Oct. 20, 1988
Michio Tsuchiya, Nagoya, JP;
Shuji Otsuka, Nagoya, JP;
Takayuki Matsumoto, Nagoya, JP;
Eiichi Ohta, Handa, JP;
Hakudai Kondo, Nagoya, JP;
Suzuyo Murai, Nagoya, JP;
Kouzi Takeyama, Nagoya, JP;
Mutumi Otobe, Nagoya, JP;
Tetsuo Harano, Inazawa, JP;
Kouichi Mino, Kashiwa, JP;
Hiroya Inagaki, Suginami, JP;
Koji Matsumura, Kashiwa, JP;
Brother Kogyo Kabushiki Kaisha, Aichi, JP;
Nippon Telegraph Corporation, Tokyo, JP;
Abstract
An optical image reading apparatus for photoelectrically reading images formed in at least two colors on a surface of an original having a base color different from the at least two colors, including a first reading device for obtaining a first image signal for each of a multiplicity of reading spots in a predetermined area on the original. The first image signal has two different levels one of which corresponds to the base color and the other of which corresponds to the at least two colors. The apparatus further includes a second reading device for obtaining a second image signal for the each reading spot. The second image signal cooperates with the first image signal to discriminate each of the at least two colors from the other of the at least two colors. Provisions are made for determining whether the levels of the first image signals for all of the multiplicity of reading spots are equal to the above-indicated one level corresponding to the base color, or not. If so, the second reading device is inhibited from operating to obtain the second inage signal for each reading spot.