CH524138A - Vorrichtung zur Messung der Schwärzung einer Vorlage - Google Patents

Vorrichtung zur Messung der Schwärzung einer Vorlage

Info

Publication number
CH524138A
CH524138A CH745370A CH745370A CH524138A CH 524138 A CH524138 A CH 524138A CH 745370 A CH745370 A CH 745370A CH 745370 A CH745370 A CH 745370A CH 524138 A CH524138 A CH 524138A
Authority
CH
Switzerland
Prior art keywords
original
density
measuring
Prior art date
Application number
CH745370A
Other languages
German (de)
English (en)
Inventor
Richard Bravenec Frank
Original Assignee
Richard Bravenec Frank
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 Richard Bravenec Frank filed Critical Richard Bravenec Frank
Publication of CH524138A publication Critical patent/CH524138A/de

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/86—Investigating moving sheets

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
CH745370A 1969-05-22 1970-05-20 Vorrichtung zur Messung der Schwärzung einer Vorlage CH524138A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82678869A 1969-05-22 1969-05-22

Publications (1)

Publication Number Publication Date
CH524138A true CH524138A (de) 1972-06-15

Family

ID=25247534

Family Applications (1)

Application Number Title Priority Date Filing Date
CH745370A CH524138A (de) 1969-05-22 1970-05-20 Vorrichtung zur Messung der Schwärzung einer Vorlage

Country Status (5)

Country Link
JP (1) JPS5420869B1 (ja)
CH (1) CH524138A (ja)
DE (1) DE2023694A1 (ja)
FR (1) FR2048596A5 (ja)
GB (1) GB1313427A (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806718A (en) * 1972-05-31 1974-04-23 Union Carbide Corp Calibration circuit suitable for centrifugal type chemical analyzer
DE2834642A1 (de) * 1978-08-08 1980-02-28 Bosch Gmbh Robert Vorrichtung zum messen des russgehaltes und verfahren zum selbsttaetigen nullabgleich bei dieser vorrichtung

Also Published As

Publication number Publication date
JPS5420869B1 (ja) 1979-07-26
DE2023694A1 (de) 1970-12-17
FR2048596A5 (ja) 1971-03-19
GB1313427A (en) 1973-04-11

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Legal Events

Date Code Title Description
PL Patent ceased