GB1444152A - Photographic products and processes - Google Patents

Photographic products and processes

Info

Publication number
GB1444152A
GB1444152A GB3637673A GB3637673A GB1444152A GB 1444152 A GB1444152 A GB 1444152A GB 3637673 A GB3637673 A GB 3637673A GB 3637673 A GB3637673 A GB 3637673A GB 1444152 A GB1444152 A GB 1444152A
Authority
GB
United Kingdom
Prior art keywords
coating
transparent
refractive index
support
see
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
GB3637673A
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.)
Polaroid Corp
Original Assignee
Polaroid 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
Priority claimed from US00311831A external-priority patent/US3833368A/en
Application filed by Polaroid Corp filed Critical Polaroid Corp
Publication of GB1444152A publication Critical patent/GB1444152A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/42—Structural details
    • G03C8/52—Bases or auxiliary layers; Substances therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Laminated Bodies (AREA)

Abstract

1444152 Coated transparent films POLAROID CORP 31 July 1973 [1 Aug 1972 4 Dec 1972] 36376/73 Heading B2E [Also in Division G2] A transparent photographic support, e.g. polyethylene terephthalate, bears on one surface an anti-reflection coating that is transparent and has a lower refractive index than the support. The anti-reflection coating may have a refractive index at least 0.2 less than the transparent support. The transparent support may shave a refractive index of at least 1.6 and the anti-reflection coating may have a refractive index of 1.3-1.4 and may comprise poly (1, 1-dihydropentadecafluorooctyl methacrylate) optionally together with a silica coating (see Ex. 1 and 2), or a copolymer of vinylidene fluoride and tetrafluoroethylene and optionally vinyl butyrate, hexafluoropropylene or chlorotrifluoropropylene optionally with polymethyl methacrylate (see Ex. 2). An aliphatic or aromatic compound containing at least one isocyanate or isothiocyanate group may be in the antireflection coating or between the coating and the transparent support to increase the abrasion resistance of the coating (see Ex. 3-7). The transparent support may contain a small quantity of a pigment e.g. carbon black.
GB3637673A 1972-08-01 1973-07-31 Photographic products and processes Expired GB1444152A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27697972A 1972-08-01 1972-08-01
US00311831A US3833368A (en) 1972-12-04 1972-12-04 Photographic products incorporating anti-reflection coatings

Publications (1)

Publication Number Publication Date
GB1444152A true GB1444152A (en) 1976-07-28

Family

ID=26958241

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3637673A Expired GB1444152A (en) 1972-08-01 1973-07-31 Photographic products and processes

Country Status (7)

Country Link
JP (1) JPS542574B2 (en)
AU (1) AU464594B2 (en)
DE (1) DE2338626C3 (en)
FR (1) FR2194985B1 (en)
GB (1) GB1444152A (en)
IT (1) IT996091B (en)
NL (1) NL177351C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920007285B1 (en) * 1989-03-10 1992-08-29 구레하 가가꾸 고오교 가부시끼가이샤 Optical phase plate and production process thereof
US5176972A (en) * 1991-09-11 1993-01-05 Polaroid Corporation Imaging medium with low refractive index layer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617354A (en) * 1969-08-08 1971-11-02 Eastman Kodak Co Photographic prints coated with antireflection layer

Also Published As

Publication number Publication date
IT996091B (en) 1975-12-10
DE2338626A1 (en) 1974-02-21
NL7310639A (en) 1974-02-05
AU5843473A (en) 1975-01-30
FR2194985B1 (en) 1977-02-25
NL177351B (en) 1985-04-01
JPS542574B2 (en) 1979-02-09
AU464594B2 (en) 1975-08-28
DE2338626B2 (en) 1980-07-17
JPS4960220A (en) 1974-06-11
DE2338626C3 (en) 1981-04-16
NL177351C (en) 1985-09-02
FR2194985A1 (en) 1974-03-01

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Legal Events

Date Code Title Description
PS Patent sealed
433D Application made for revocation (sect. 33/1949)
433C Case decided by the comptroller ** specification amended (sect. 33/1949)
SPA Amended specification published
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920731