GB1149834A - Device for indexing and scanning microfilm - Google Patents

Device for indexing and scanning microfilm

Info

Publication number
GB1149834A
GB1149834A GB1894567A GB1894567A GB1149834A GB 1149834 A GB1149834 A GB 1149834A GB 1894567 A GB1894567 A GB 1894567A GB 1894567 A GB1894567 A GB 1894567A GB 1149834 A GB1149834 A GB 1149834A
Authority
GB
United Kingdom
Prior art keywords
film
april
screen
indexing
identifying symbols
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.)
Expired
Application number
GB1894567A
Inventor
Magne Slettebo
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.)
Individual
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 GB1149834A publication Critical patent/GB1149834A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/10—Projectors with built-in or built-on screen
    • G03B21/11—Projectors with built-in or built-on screen for microfilm reading
    • G03B21/111—Projectors with built-in or built-on screen for microfilm reading of roll films

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Projection-Type Copiers In General (AREA)

Abstract

1,149,834. Strip-film projectors. M. SLETTEBO. April 25, 1967 [April 26, 1966], No.18945/67. Heading G2J. In a microfilm projection viewing device, the film 1 is driven continuously between reels 8 and 9 until the required frame appears on screen 6, a rotating optical compensating device 16, such as a prism on mirror, providing a stationary image on the screen of identifying symbols included in each frame. The device 16 is driven by gear 14 on sprocket wheel 12. The film is divided longitudinally into two parts, one bearing information, the other bearing identifying symbols as in Fig. 2 (not shown).
GB1894567A 1966-04-26 1967-04-25 Device for indexing and scanning microfilm Expired GB1149834A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO16274566A NO115366B (en) 1966-04-26 1966-04-26

Publications (1)

Publication Number Publication Date
GB1149834A true GB1149834A (en) 1969-04-23

Family

ID=19909534

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1894567A Expired GB1149834A (en) 1966-04-26 1967-04-25 Device for indexing and scanning microfilm

Country Status (5)

Country Link
CH (1) CH469279A (en)
DE (1) DE1572825B2 (en)
GB (1) GB1149834A (en)
NO (1) NO115366B (en)
SE (1) SE330268B (en)

Also Published As

Publication number Publication date
DE1572825B2 (en) 1970-12-10
CH469279A (en) 1969-02-28
SE330268B (en) 1970-11-09
NO115366B (en) 1968-09-23
DE1572825A1 (en) 1970-03-19

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