Apparatus for detecting the presence or absence of overlap at tape joints
AssigneeFuji Photo Film Co., Ltd.
InventorsMasaaki Sakaguchi, Kazuo Kubota
Life of this patent
Estimating the term…
Abstract
A joint inspection apparatus comprises a light irradiating device for irradiating light to a tape joint at which two tape edge portions are joined together, and a light receiving device for receiving the light irradiated by the light irradiating device to the tape joint and passing through the tape joint or reflected by the tape joint. A judgment device is provided for judging the presence or absence of an overlap of the two tape edge portions one upon the other at the tape joint on the basis of information on the optical amount of the light received by the light receiving device in the vicinity of the tape joint.
Claims5
A joint inspection apparatus for determining whether or not first and second tapes are joined at respective edge portions without overlap, the apparatus comprising:
- (i) a light irradiating means for irradiating light normal to the direction of the movement of a tape joint at which said respective edge portions are joined together,
- (ii) a light receiving means for receiving the light irradiated by said light irradiating means to said tape joint and passing through said tape joint or reflected by said tape joint, and
- (iii) a judgment means for judging the presence or absence of an overlap of said respective tape edge portions one upon the other at said tape joint on the basis of information on the optical amount of the light received by said light receiving means in the vicinity of said tape joint, said judgment means including a discrimination circuit which compares the level of an amplified output signal generated by said light receiving means with a predetermined discrimination level indicative of the presence of overlap.
Dependencies are inferred from the claim text.