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:
May. 24, 2005
Filed:
Apr. 16, 2002
Yukihiko Yamaguchi, Kanagawa, JP;
Koichi Murai, Kanagawa, JP;
Yukihiko Yamaguchi, Kanagawa, JP;
Koichi Murai, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
In an inspection device, an inspection light projector and an auxiliary light emitter respectively project an inspection light and auxiliary light onto a position of a filmstrip. After transmitting the filmstrip, the inspection light is received by a defect detector. When receiving the inspection light, the defect detector generates a data signal and sends it to a controller. In the controller, a threshold of a level of the data signal is memorized, and the level of the data signal is compared with the threshold. If the level of the data signal becomes under the threshold, the controller determines that the filmstrip has a coloring defect. Further, if there is a dust on the filmstrip, the level of the data signal becomes higher. Because the auxiliary light is diffused by the dust, and a part of the auxiliary light is received by the defect detector.