GB1390194A - Comparators - Google Patents

Comparators

Info

Publication number
GB1390194A
GB1390194A GB1785372A GB1785372A GB1390194A GB 1390194 A GB1390194 A GB 1390194A GB 1785372 A GB1785372 A GB 1785372A GB 1785372 A GB1785372 A GB 1785372A GB 1390194 A GB1390194 A GB 1390194A
Authority
GB
United Kingdom
Prior art keywords
colours
density
colour
april
gain
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
GB1785372A
Other languages
English (en)
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 GB1390194A publication Critical patent/GB1390194A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/52—Measurement of colour; Colour measuring devices, e.g. colorimeters using colour charts

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Filters (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Color Television Image Signal Generators (AREA)
GB1785372A 1971-04-19 1972-04-18 Comparators Expired GB1390194A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13496471A 1971-04-19 1971-04-19

Publications (1)

Publication Number Publication Date
GB1390194A true GB1390194A (en) 1975-04-09

Family

ID=22465838

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1785372A Expired GB1390194A (en) 1971-04-19 1972-04-18 Comparators

Country Status (7)

Country Link
US (1) US3748045A (https=)
JP (1) JPS5128238B1 (https=)
CA (1) CA953493A (https=)
DE (1) DE2218917B2 (https=)
FR (1) FR2133847B1 (https=)
GB (1) GB1390194A (https=)
IT (1) IT952615B (https=)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967897A (en) * 1974-10-04 1976-07-06 Rogers Winston L Apparatus and method for evaluating color negatives
JPS5931056B2 (ja) * 1975-05-15 1984-07-31 直司 西川 カラ−プリントの色補正方法およびカラ−プリントスケ−ル
US4257702A (en) * 1977-07-05 1981-03-24 Miller Bertram W Apparatus for ascertaining color balance of photographic printing paper
USRE30449E (en) * 1978-07-10 1980-12-16 Photographic printing method
US4492474A (en) * 1982-05-26 1985-01-08 Miller Bertram W Method and apparatus for ascertaining color balance of photographic printing paper
AU5173890A (en) * 1989-02-15 1990-09-05 Lithodatec Managment Inc. Colour system calibration sheet, vignettes and transitions

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1769777A (en) * 1928-04-21 1930-07-01 Equity Press Inc Hzemoglobin chart
DE622102C (de) * 1931-06-01 1935-11-19 Alfons Michalski Vorrichtung zum Untersuchen und Ermitteln von Farbtonwerten und Druckelementgroessen
US2128676A (en) * 1935-12-07 1938-08-30 Interchem Corp Color chart and method of making the same
US2240053A (en) * 1939-04-05 1941-04-29 Richardson King Color scale
US3529519A (en) * 1968-04-11 1970-09-22 Heath Co Method and apparatus for color adjusting in photographic printing

Also Published As

Publication number Publication date
US3748045A (en) 1973-07-24
DE2218917B2 (de) 1976-07-15
CA953493A (en) 1974-08-27
FR2133847A1 (https=) 1972-12-01
JPS5128238B1 (https=) 1976-08-18
IT952615B (it) 1973-07-30
DE2218917A1 (de) 1972-11-09
FR2133847B1 (https=) 1974-12-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee