GB8500324D0 - Light quantity control - Google Patents

Light quantity control

Info

Publication number
GB8500324D0
GB8500324D0 GB858500324A GB8500324A GB8500324D0 GB 8500324 D0 GB8500324 D0 GB 8500324D0 GB 858500324 A GB858500324 A GB 858500324A GB 8500324 A GB8500324 A GB 8500324A GB 8500324 D0 GB8500324 D0 GB 8500324D0
Authority
GB
United Kingdom
Prior art keywords
light quantity
quantity control
control
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
GB858500324A
Other versions
GB2152685B (en
GB2152685A (en
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.)
Dainippon Screen Manufacturing Co Ltd
Original Assignee
Dainippon Screen Manufacturing Co Ltd
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 Dainippon Screen Manufacturing Co Ltd filed Critical Dainippon Screen Manufacturing Co Ltd
Publication of GB8500324D0 publication Critical patent/GB8500324D0/en
Publication of GB2152685A publication Critical patent/GB2152685A/en
Application granted granted Critical
Publication of GB2152685B publication Critical patent/GB2152685B/en
Expired 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/06—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface
    • H04N1/0607—Scanning a concave surface, e.g. with internal drum type scanners
    • H04N1/0621—Scanning a concave surface, e.g. with internal drum type scanners using a picture-bearing surface stationary in the main-scanning direction
    • H04N1/0635—Scanning a concave surface, e.g. with internal drum type scanners using a picture-bearing surface stationary in the main-scanning direction using oscillating or rotating mirrors
    • 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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/06—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface
    • H04N1/0657—Scanning a transparent surface, e.g. reading a transparency original

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
GB08500324A 1984-01-12 1985-01-07 Image scanning and recording Expired GB2152685B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984002929U JPS60115248U (en) 1984-01-12 1984-01-12 Light amount adjustment device

Publications (3)

Publication Number Publication Date
GB8500324D0 true GB8500324D0 (en) 1985-02-13
GB2152685A GB2152685A (en) 1985-08-07
GB2152685B GB2152685B (en) 1987-07-08

Family

ID=11543030

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08500324A Expired GB2152685B (en) 1984-01-12 1985-01-07 Image scanning and recording

Country Status (3)

Country Link
JP (1) JPS60115248U (en)
DE (1) DE3443583A1 (en)
GB (1) GB2152685B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4821332A (en) * 1987-02-20 1989-04-11 Banctec Inc. Method and apparatus for image capture of information on documents
US4788600A (en) * 1987-04-15 1988-11-29 Eastman Kodak Company Video apparatus for generating an adjustable contrast video signal from a photographic print

Also Published As

Publication number Publication date
DE3443583A1 (en) 1985-07-18
JPS60115248U (en) 1985-08-03
GB2152685B (en) 1987-07-08
GB2152685A (en) 1985-08-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930107