Device for monitoring sheets

Details Device for monitoring sheets Device for monitoring sheets

1999-11-17

2001-07-24

Walsh, Donald (Department: 3653)

Material or article handling

Load carried along a horizontal linear path

Having gripper means

C414S022630, C414S331060, C414S752100, C198S340000, C198S341010, C209S534000, C209S546000

Reexamination Certificate

active

06264420

ABSTRACT:

FIELD OF THE INVENTION
The invention concerns a device for monitoring sheets from which value cards and/or personal cards are punched out, where the cards are arranged in rows on the sheets.
BACKGROUND OF THE INVENTION
It is known to transfer the single sheets to a conveyor belt above which an electronic camera is provided for each row of cards. The cameras are connected with a computer which has a comparator circuit which compares the camera images with a criteria catalogue.
Sheets which have defective cards are sorted out, while sheets having flawless cards are conveyed for further processing.
If, for example, a sheet has eight rows of cards, then eight cameras are required for this monitoring device. However, cameras with a corresponding resolution are very expensive. A further disadvantage of the known device can be seen therein that sheets having only a few defective cards can also be rejected.
BRIEF SUMMARY OF THE INVENTION
The object is to design the monitoring device in such a way that the number of cameras used is independent of the number of card rows.
This object is solved with the features of the device of the present invention. The device includes a longitudinal table on which at least two sheets are deposited, at least one camera which is mounted to travel longitudinally and transversely to the table, and a conveying device for the sheets that can travel above and along the table and up to above a feed station and a transfer station.


REFERENCES:
patent: 4362461 (1982-12-01), Cathers
patent: 5628574 (1997-05-01), Crowley
patent: 5664026 (1997-09-01), Neri et al.
patent: 23 29 041 A1 (1975-01-01), None
patent: 39 42 932 A1 (1991-06-01), None
patent: 0 810 092 A1 (1997-12-01), None
“Printed Circuit Board Through-Hole Inspection Using Video Camera” In: IBM Technical Disclosure Bulletin, vol. 30, No. 3, Aug. 1997, S. 980, S. 981.
JP 6-183638 A., In: Patent Abstracts of Japan, M-1684, Oct. 6, 1994, vol. 18, No. 529.
JP 6-183638 (A), Patent Abstracts of Japan, M-1684, Oct. 6, 1994, vol. 18, No. 529.
IBM Technical Disclosure Bulletin, vol. 30, No. 3, pp. 980-981.

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