Apparatus for scanning a document

Details Apparatus for scanning a document Apparatus for scanning a document

1990-04-26

1993-03-02

Boudreau, Leo H.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

355202, 355234, G06K 920

Patent

active

051914425

ABSTRACT:
An apparatus for scanning documents combines digitizing circuitry with a scanning platen to achieve precise selection of image areas on large documents. A vacuum system holds the document in place against a perforated scanning surface during registration and scanning. The assembly of scanning surface, vacuum chamber, and digitizing circuitry move as a unit beneath a fixed scanning apparatus. The apparatus further has a mechanical structure which allows the table assembly to rotate about a pivot axis toward an operator to reduce parallax error in mapping image areas.

REFERENCES:
patent: 3467524 (1969-09-01), Gruver
patent: 3551048 (1970-12-01), Hoffman
patent: 4251153 (1981-02-01), Levine
patent: 4268164 (1981-05-01), Yajima et al.
patent: 4285012 (1981-08-01), Ohara et al.
patent: 4299478 (1981-11-01), Knodt et al.
patent: 4586815 (1986-05-01), Hoshino et al.
patent: 4596456 (1986-06-01), Ide
patent: 4676582 (1987-01-01), Kato et al.
patent: 4683156 (1987-06-01), Horikawa et al.
patent: 4734789 (1988-03-01), Smith et al.
patent: 4745491 (1989-02-01), Kishi et al.
patent: 4771336 (1988-09-01), Ohtorii
patent: 4805973 (1989-03-01), Watanabe
patent: 4812874 (1989-03-01), Kubota et al.
patent: 4812875 (1989-03-01), Tanimoto
patent: 4816921 (1989-03-01), Akiyama et al.
patent: 4849787 (1989-07-01), Honjo et al.
patent: 4849914 (1989-07-01), Medioni et al.
patent: 4875075 (1989-10-01), Sootome et al.
patent: 4958241 (1990-09-01), Ohtomo et al.
patent: 4965678 (1990-10-01), Yamada
patent: 4985778 (1991-01-01), Ayata et al.
patent: 4992828 (1991-02-01), Liston

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