SE8802362L - Device for altering contrast extent in reversal film - has tough-working photographic reversal material illuminated for part of total exposure period with neutral light without original picture - Google Patents

Device for altering contrast extent in reversal film - has tough-working photographic reversal material illuminated for part of total exposure period with neutral light without original picture

Info

Publication number
SE8802362L
SE8802362L SE8802362A SE8802362A SE8802362L SE 8802362 L SE8802362 L SE 8802362L SE 8802362 A SE8802362 A SE 8802362A SE 8802362 A SE8802362 A SE 8802362A SE 8802362 L SE8802362 L SE 8802362L
Authority
SE
Sweden
Prior art keywords
reversal
original picture
tough
total exposure
exposure period
Prior art date
Application number
SE8802362A
Other languages
Swedish (sv)
Other versions
SE8802362D0 (en
Inventor
S Soerensen
Original Assignee
Fotografisk Kemi Och Teknik I
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 SE8702966A external-priority patent/SE8702966D0/en
Application filed by Fotografisk Kemi Och Teknik I filed Critical Fotografisk Kemi Och Teknik I
Priority to SE8802362A priority Critical patent/SE8802362L/en
Publication of SE8802362D0 publication Critical patent/SE8802362D0/en
Publication of SE8802362L publication Critical patent/SE8802362L/en

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
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • G03B27/73—Controlling exposure by variation of spectral composition, e.g. multicolor printers

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection-Type Copiers In General (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Control Of Exposure In Printing And Copying (AREA)

Abstract

Using one and the same film and identical developing conditions and other processing requisities, it is possible to obtain a redn. of the reversal film or paper contrast extent from max. down to no contrast at all. This is achieved by illuminating specific, tough photographic reversal material for a shorter or longer part of the total exposure time, using neutral light without a original picture. The material is then exposed to light with an original picture, developed and processed in the usual way.
SE8802362A 1987-07-24 1988-06-22 Device for altering contrast extent in reversal film - has tough-working photographic reversal material illuminated for part of total exposure period with neutral light without original picture SE8802362L (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8802362A SE8802362L (en) 1987-07-24 1988-06-22 Device for altering contrast extent in reversal film - has tough-working photographic reversal material illuminated for part of total exposure period with neutral light without original picture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8702966A SE8702966D0 (en) 1987-07-24 1987-07-24 REVERSALPRINCIPEN
SE8802362A SE8802362L (en) 1987-07-24 1988-06-22 Device for altering contrast extent in reversal film - has tough-working photographic reversal material illuminated for part of total exposure period with neutral light without original picture

Publications (2)

Publication Number Publication Date
SE8802362D0 SE8802362D0 (en) 1988-06-22
SE8802362L true SE8802362L (en) 1989-01-25

Family

ID=26659898

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8802362A SE8802362L (en) 1987-07-24 1988-06-22 Device for altering contrast extent in reversal film - has tough-working photographic reversal material illuminated for part of total exposure period with neutral light without original picture

Country Status (1)

Country Link
SE (1) SE8802362L (en)

Also Published As

Publication number Publication date
SE8802362D0 (en) 1988-06-22

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Legal Events

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NAV Patent application has lapsed

Ref document number: 8802362-7

Effective date: 19910101