GB1060746A - High resolution photographic reproduction apparatus - Google Patents

High resolution photographic reproduction apparatus

Info

Publication number
GB1060746A
GB1060746A GB21681/64A GB2168164A GB1060746A GB 1060746 A GB1060746 A GB 1060746A GB 21681/64 A GB21681/64 A GB 21681/64A GB 2168164 A GB2168164 A GB 2168164A GB 1060746 A GB1060746 A GB 1060746A
Authority
GB
United Kingdom
Prior art keywords
cylinder
collimating
light source
disposed
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.)
Expired
Application number
GB21681/64A
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.)
Tecnifax Corp
Original Assignee
Tecnifax Corp
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 Tecnifax Corp filed Critical Tecnifax Corp
Publication of GB1060746A publication Critical patent/GB1060746A/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
    • H04N1/23—Reproducing arrangements
    • 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
    • G03B27/00—Photographic printing apparatus
    • G03B27/02—Exposure apparatus for contact printing
    • G03B27/04—Copying apparatus without a relative movement between the original and the light source during exposure, e.g. printing frame or printing box
    • G03B27/08—Copying apparatus without a relative movement between the original and the light source during exposure, e.g. printing frame or printing box for automatic copying of several originals one after the other, e.g. for copying cinematograph film
    • 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
    • G03B27/00—Photographic printing apparatus
    • G03B27/02—Exposure apparatus for contact printing
    • G03B27/10—Copying apparatus with a relative movement between the original and the light source during exposure
    • 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
    • G03B27/00—Photographic printing apparatus
    • G03B27/02—Exposure apparatus for contact printing
    • G03B27/14—Details
    • G03B27/16—Illumination arrangements, e.g. positioning of lamps, positioning of reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

1,060,746. Photographic copying apparatus. TECNIFAX CORPORATION. May 26, 1964 [July 5, 1963], No.21681/64. Heading G2A. In photographic copying apparatus in which a transparent cylinder rotates about a tubular light source disposed along its axis, a collimator is disposed between light source and cylinder, the collimator being in the form of a large number of tubular passages lying radially to the light source, each passage having a length of two to four times its diameter. In the form shown, the original and copy film strips 12, 10 are carried in contact by an endless belt 14 round a transparent cylinder 8, the tubular light source 6 being disposed axially within the cylinder. Between cylinder and light source is disposed a further cylinder 18 having a plurality of light-collimating openings 20 therein. Alternatively this collimating cylinder may be formed of separate short lengths of tubing adhered together Fig. 3 (not shown), or of a number of thin perforated sheets secured together as a laminated structure, with all the perforations in register Fig. 5 (not shown). The collimating cylinder is preferably made of a heat-conductive material, so that it performs an additional function of reducing the heat incident on the films, and may further be air-cooled. Collimating the light in this way is stated to improve the resolution, and the light passages are oriented so as to minimize the 'banding' effect, i.e. uneven density of reproduction. The diameter and length of the collimating apertures, and their distance from the film, all have an effect on the degree of banding, resolution, and possible printing speed. Hence optimum conditions may be determined experimentally, Figs. (not shown), 6-9. A preferred length-to-diameter ratio for the apertures is 4:1.
GB21681/64A 1963-07-05 1964-05-26 High resolution photographic reproduction apparatus Expired GB1060746A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US293025A US3217625A (en) 1963-07-05 1963-07-05 High resolution reproduction apparatus

Publications (1)

Publication Number Publication Date
GB1060746A true GB1060746A (en) 1967-03-08

Family

ID=23127307

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21681/64A Expired GB1060746A (en) 1963-07-05 1964-05-26 High resolution photographic reproduction apparatus

Country Status (4)

Country Link
US (1) US3217625A (en)
GB (1) GB1060746A (en)
NL (1) NL6406790A (en)
SE (1) SE313499B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2261737A (en) * 1990-08-22 1993-05-26 Adam Peter Major Scanning ultra violet exposure unit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6617429A (en) * 1965-12-22 1967-06-23
US20050170287A1 (en) * 2004-01-30 2005-08-04 Kanga Rustom S. Photosensitive printing sleeves and method of forming the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB285738A (en) * 1926-10-15 1928-02-15 Baird Television Ltd An improved method of and means for producing optical images
US2653516A (en) * 1949-10-17 1953-09-29 Glen A Johnson Light-beam-rectifying lens
US2990763A (en) * 1959-07-08 1961-07-04 Gen Aniline & Film Corp Diazo type printing apparatus
US2991705A (en) * 1960-01-06 1961-07-11 George J Bryan Apparatus for applying reference grid lines to unexposed photographic film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2261737A (en) * 1990-08-22 1993-05-26 Adam Peter Major Scanning ultra violet exposure unit

Also Published As

Publication number Publication date
SE313499B (en) 1969-08-11
US3217625A (en) 1965-11-16
NL6406790A (en) 1965-01-06

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