CA2077860A1 - Image scanner - Google Patents

Image scanner

Info

Publication number
CA2077860A1
CA2077860A1 CA2077860A CA2077860A CA2077860A1 CA 2077860 A1 CA2077860 A1 CA 2077860A1 CA 2077860 A CA2077860 A CA 2077860A CA 2077860 A CA2077860 A CA 2077860A CA 2077860 A1 CA2077860 A1 CA 2077860A1
Authority
CA
Canada
Prior art keywords
original
image sensor
original copy
polarizing
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2077860A
Other languages
French (fr)
Other versions
CA2077860C (en
Inventor
Tokio Nakashima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2077860A1 publication Critical patent/CA2077860A1/en
Application granted granted Critical
Publication of CA2077860C publication Critical patent/CA2077860C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00795—Reading arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/043—Viewing the scanned area

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Holders For Sensitive Materials And Originals (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Projection-Type Copiers In General (AREA)

Abstract

An image scanner including an original holder 12 for holding an original copy 11 placed on a transparent original support plate 10 in place. The original copy 11 is illuminated by a light source 13 and a reflected light 18 from the original copy 11 is received by an image sensor 14.
To check a position of the original copy 11 visually while the original holder 12 is closed, the original holder 12 comprises a transparent first polarizing plate having a first polarizing angle. An external light coming inside the case body through the first polarizing plate is prevented from reaching the image sensor 14 by a second polarizing plate 16 which has a second polarizing angle rotated by 90°
from the first polarizing angle and is disposed between the original copy 11 and the image sensor 14 in a light path of a light incoming into the image sensor 14.
CA002077860A 1991-09-09 1992-09-09 Image scanner Expired - Fee Related CA2077860C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3-229067 1991-09-09
JP3229067A JPH0568147A (en) 1991-09-09 1991-09-09 Document reader

Publications (2)

Publication Number Publication Date
CA2077860A1 true CA2077860A1 (en) 1993-03-10
CA2077860C CA2077860C (en) 1996-04-30

Family

ID=16886220

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002077860A Expired - Fee Related CA2077860C (en) 1991-09-09 1992-09-09 Image scanner

Country Status (6)

Country Link
JP (1) JPH0568147A (en)
KR (1) KR960008377B1 (en)
CA (1) CA2077860C (en)
DE (1) DE4230173C2 (en)
GB (1) GB2259371B (en)
TW (1) TW256809B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5625469A (en) * 1995-06-29 1997-04-29 Agfa Division, Bayer Corp. Apparatus for alignment of material to be scanned in a flat-bed scanner
GB2309087A (en) * 1996-01-10 1997-07-16 Michael Waddingham Photocopiers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63218935A (en) * 1987-03-09 1988-09-12 Toshiba Eng Co Ltd Confirming device for original of copying machine

Also Published As

Publication number Publication date
KR960008377B1 (en) 1996-06-26
KR930007196A (en) 1993-04-22
DE4230173A1 (en) 1993-03-18
GB2259371A (en) 1993-03-10
CA2077860C (en) 1996-04-30
TW256809B (en) 1995-09-11
JPH0568147A (en) 1993-03-19
GB9219061D0 (en) 1992-10-21
DE4230173C2 (en) 1996-08-01
GB2259371B (en) 1994-12-14

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed