Original document reading device capable of automatically detect

Details Original document reading device capable of automatically detect Original document reading device capable of automatically detect

1994-09-27

1996-03-19

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

25055924, 358449, 364562, H04N 100, G03G 1500

Patent

active

055007252

ABSTRACT:
A document reading device comprises a plurality of distances sensors for measuring the distance as for each certain position of an original document table, an original document size detection CPU 1 for comparing information about the distance measured by the plurality of distance sensors with preset threshold value to detect if an original document is disposed on the certain position, then deciding the size of the original document size disposed on the original document table according to the detected result and transmitting original document size data, and a main unit control CPU 2 for taking in the original document size data from the original document size detection CPU 1 to control the reading of the original document.

REFERENCES:
patent: 4568181 (1986-02-01), Nishiyama
patent: 4585332 (1986-04-01), Shenoy
patent: 4698511 (1987-10-01), Sueda et al.
patent: 4713550 (1987-12-01), Anzai et al.
patent: 4929844 (1990-05-01), Houjiyou et al.
patent: 5225688 (1993-07-01), Endo

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