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GB2299688B - Darkroom analyser - Google Patents

Darkroom analyser

Info

Publication number
GB2299688B
GB2299688B GB9525997A GB9525997A GB2299688B GB 2299688 B GB2299688 B GB 2299688B GB 9525997 A GB9525997 A GB 9525997A GB 9525997 A GB9525997 A GB 9525997A GB 2299688 B GB2299688 B GB 2299688B
Authority
GB
United Kingdom
Prior art keywords
darkroom
analyser
darkroom analyser
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 - Fee Related
Application number
GB9525997A
Other versions
GB2299688A (en
GB9525997D0 (en
Inventor
Christopher John Woodhouse
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 GB9525997D0 publication Critical patent/GB9525997D0/en
Publication of GB2299688A publication Critical patent/GB2299688A/en
Application granted granted Critical
Publication of GB2299688B publication Critical patent/GB2299688B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
    • G01J1/4219—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for enlargers

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
GB9525997A 1995-04-04 1995-12-20 Darkroom analyser Expired - Fee Related GB2299688B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9506929.0A GB9506929D0 (en) 1995-04-04 1995-04-04 Darkroom analyser

Publications (3)

Publication Number Publication Date
GB9525997D0 GB9525997D0 (en) 1996-02-21
GB2299688A GB2299688A (en) 1996-10-09
GB2299688B true GB2299688B (en) 1998-10-07

Family

ID=10772478

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9506929.0A Pending GB9506929D0 (en) 1995-04-04 1995-04-04 Darkroom analyser
GB9525997A Expired - Fee Related GB2299688B (en) 1995-04-04 1995-12-20 Darkroom analyser

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9506929.0A Pending GB9506929D0 (en) 1995-04-04 1995-04-04 Darkroom analyser

Country Status (1)

Country Link
GB (2) GB9506929D0 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1117823A (en) * 1966-03-09 1968-06-26 Medical And Electrical Instrum Improvements in or relating to methods of and apparatus for determining exposure times for photographic printing and enlarging
US4175855A (en) * 1974-04-04 1979-11-27 Terminal Data Corporation Electronic exposure control
US4199252A (en) * 1977-09-20 1980-04-22 Vermeulen Dirk J Photographic enlarging exposure meters
GB2047415A (en) * 1979-02-28 1980-11-26 Nippon Kogaku Kk Photometric multi-metering device
US4498140A (en) * 1982-06-02 1985-02-05 Chesley F. Carlson Automated self calibrating exposure computer
EP0268552A1 (en) * 1986-10-14 1988-05-25 Ciba-Geigy Ag Contrast monitor
US4920378A (en) * 1987-12-16 1990-04-24 Durst Phototechnik Gmbh Method and a measuring apparatus for determining the exposure time in photographic copying

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1117823A (en) * 1966-03-09 1968-06-26 Medical And Electrical Instrum Improvements in or relating to methods of and apparatus for determining exposure times for photographic printing and enlarging
US4175855A (en) * 1974-04-04 1979-11-27 Terminal Data Corporation Electronic exposure control
US4199252A (en) * 1977-09-20 1980-04-22 Vermeulen Dirk J Photographic enlarging exposure meters
GB2047415A (en) * 1979-02-28 1980-11-26 Nippon Kogaku Kk Photometric multi-metering device
US4498140A (en) * 1982-06-02 1985-02-05 Chesley F. Carlson Automated self calibrating exposure computer
EP0268552A1 (en) * 1986-10-14 1988-05-25 Ciba-Geigy Ag Contrast monitor
US4920378A (en) * 1987-12-16 1990-04-24 Durst Phototechnik Gmbh Method and a measuring apparatus for determining the exposure time in photographic copying

Also Published As

Publication number Publication date
GB9506929D0 (en) 1995-05-24
GB2299688A (en) 1996-10-09
GB9525997D0 (en) 1996-02-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20011220