GB746667A - Improvements in cinematograph screens - Google Patents

Improvements in cinematograph screens

Info

Publication number
GB746667A
GB746667A GB479053A GB479053A GB746667A GB 746667 A GB746667 A GB 746667A GB 479053 A GB479053 A GB 479053A GB 479053 A GB479053 A GB 479053A GB 746667 A GB746667 A GB 746667A
Authority
GB
United Kingdom
Prior art keywords
screen
sheet base
paint
tension
feb
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
GB479053A
Inventor
Thomas Smith Harkness
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.)
Andrew Smith Harkness Ltd
Original Assignee
Andrew Smith Harkness 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 Andrew Smith Harkness Ltd filed Critical Andrew Smith Harkness Ltd
Priority to GB479053A priority Critical patent/GB746667A/en
Publication of GB746667A publication Critical patent/GB746667A/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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

746,667. Coated fabrics. HARKNESS, Ltd., A. S. Feb. 11, 1954 [Feb. 20, 1953], No. 4790/53. Class 140. [Also in Group XX] A projection screen having a wrinkled surface is produced by coating a sheet base of a plastic material such as polyvinyl chloride with an elastic paint containing a solvent capable of temporarily softening the sheet base, the coating being effected while the sheet base is maintained under tension and the tension being released following drying of the paint. One or more coats may be applied. After drying, the screen may be again painted under tension, the tension being partially or completely released while the paint is still wet. The paint may contain chlorinated rubber or a vinyl copolymer and aluminium powder or paste. The sheet base is preferably strained more strongly in the direction of the width of the screen. The screen may be made up of a plurality of strips of sheet base with seams running parallel to the height of the screen. Specification 598,286, [Group XX], is referred to.
GB479053A 1953-02-20 1953-02-20 Improvements in cinematograph screens Expired GB746667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB479053A GB746667A (en) 1953-02-20 1953-02-20 Improvements in cinematograph screens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB479053A GB746667A (en) 1953-02-20 1953-02-20 Improvements in cinematograph screens

Publications (1)

Publication Number Publication Date
GB746667A true GB746667A (en) 1956-03-21

Family

ID=9783856

Family Applications (1)

Application Number Title Priority Date Filing Date
GB479053A Expired GB746667A (en) 1953-02-20 1953-02-20 Improvements in cinematograph screens

Country Status (1)

Country Link
GB (1) GB746667A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0265007A1 (en) * 1986-10-13 1988-04-27 Koninklijke Philips Electronics N.V. Method of manufacturing a diffuse reflector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0265007A1 (en) * 1986-10-13 1988-04-27 Koninklijke Philips Electronics N.V. Method of manufacturing a diffuse reflector

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