Variable-timing automatic document feeding device and method

Details Variable-timing automatic document feeding device and method Variable-timing automatic document feeding device and method

1996-12-30

1999-06-22

Lee, S.

Electrophotography

Document handling

Original

358498, G03G 1500

Patent

active

059151587

ABSTRACT:
In a device and method for feeding one by one documents including a preceding document to be fed earlier and a following document to be fed later to an image scanning station having a scanning reference point, the document being transported toward the image scanning station is first measured to find the length of the document, so that the following document is introduced into the image scanning station with timing varying with the length of the preceding document after the preceding document is treated and discharged. In a case that the following document passes past the scanning reference point just when the preceding document is discharged, the following document is moved backward to the scanning reference point, but if the following document does not reach the scanning reference point at that time, it is further forwarded to the appropriate image scanning station, consequently to shorten the interval of transporting the preceding and following documents, thus speeding up the image processing operation.

REFERENCES:
patent: 4943832 (1990-07-01), Emori
patent: 5223905 (1993-06-01), Yamada et al.
patent: 5327205 (1994-07-01), Baba
patent: 5379128 (1995-01-01), Ishida et al.
patent: 5563699 (1996-10-01), Tsukamoto

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