DE69222456D1 - Filmdensitometer mit Bereichsautomatik - Google Patents

Filmdensitometer mit Bereichsautomatik

Info

Publication number
DE69222456D1
DE69222456D1 DE69222456T DE69222456T DE69222456D1 DE 69222456 D1 DE69222456 D1 DE 69222456D1 DE 69222456 T DE69222456 T DE 69222456T DE 69222456 T DE69222456 T DE 69222456T DE 69222456 D1 DE69222456 D1 DE 69222456D1
Authority
DE
Germany
Prior art keywords
range control
automatic range
film densitometer
densitometer
film
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
DE69222456T
Other languages
English (en)
Other versions
DE69222456T2 (de
Inventor
Paul C Schubert
Richard R Lemberger
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.)
Carestream Health Inc
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of DE69222456D1 publication Critical patent/DE69222456D1/de
Application granted granted Critical
Publication of DE69222456T2 publication Critical patent/DE69222456T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • G01J1/44—Electric circuits
    • G01J2001/4406—Plural ranges in circuit, e.g. switchable ranges; Adjusting sensitivity selecting gain values
    • 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
    • G01N21/59—Transmissivity
    • G01N21/5907—Densitometers
    • G01N2021/5915—Processing scan data in densitometry
    • G01N2021/5946—Processing scan data in densitometry for binary signal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/12—Circuits of general importance; Signal processing
    • G01N2201/125—Digital circuitry

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Facsimile Scanning Arrangements (AREA)
DE69222456T 1991-03-13 1992-03-11 Filmdensitometer mit Bereichsautomatik Expired - Fee Related DE69222456T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/668,490 US5117119A (en) 1991-03-13 1991-03-13 Auto-ranging film densitometer

Publications (2)

Publication Number Publication Date
DE69222456D1 true DE69222456D1 (de) 1997-11-06
DE69222456T2 DE69222456T2 (de) 1998-03-19

Family

ID=24682509

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69222456T Expired - Fee Related DE69222456T2 (de) 1991-03-13 1992-03-11 Filmdensitometer mit Bereichsautomatik

Country Status (4)

Country Link
US (1) US5117119A (de)
EP (1) EP0505079B1 (de)
JP (1) JP3269568B2 (de)
DE (1) DE69222456T2 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2866236B2 (ja) * 1991-10-29 1999-03-08 沖電気工業株式会社 印字用紙検出回路
AU661205B2 (en) * 1992-11-25 1995-07-13 Eastman Kodak Company Multi-user digital laser imaging system
US5686953A (en) * 1994-11-22 1997-11-11 Minnesota Mining And Manufacturing Company Imaging system and method using linear perceived optical density interface
US5786994A (en) * 1994-11-23 1998-07-28 Imation Corp. Performance monitoring system and method for a laser medical imager
US5640109A (en) * 1995-10-27 1997-06-17 Mts Systems Corporation Pulse detector
FR2749076A1 (fr) * 1996-05-21 1997-11-28 Generys Technologie S A Procede de determination de la densite optique et densitometre
US5925889A (en) * 1997-10-21 1999-07-20 Hewlett-Packard Company Printer and method with media gloss and color determination
US6222176B1 (en) 1998-11-04 2001-04-24 Nexpress Solutions Llc Digital densitometer with lut output summation to yield density value
US6225618B1 (en) 1998-11-04 2001-05-01 Nex Press Solutions Llc Digital densitometer with auto-ranging
US6331832B1 (en) 2000-04-03 2001-12-18 Allen J. Rushing Auto-ranging digital densitometer with lookup table
US6567171B1 (en) 2000-04-03 2003-05-20 Rushing Allen J Digital densitometer with controlled light emitter
US6791485B1 (en) 2000-04-03 2004-09-14 Allen Joseph Rushing Digital densitometer using light-to-frequency converter
US6427057B1 (en) 2000-08-15 2002-07-30 Heidelberger Druckmaschinen Ag Image-forming machine with a pulse densitometer
US6576883B1 (en) * 2000-09-25 2003-06-10 Hewlett-Packard Development Company, L.P. Non-linear gain compensation for optical scanners
US6385411B1 (en) * 2000-10-13 2002-05-07 Heidelberger Druckmaschinen Ag Densitometer diagnostic system for an image-forming machine
FR2893157B1 (fr) * 2005-11-08 2007-12-21 Thales Sa Procede d'aide a la prise de decision pour la comparaison de donnees biometriques

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902813A (en) * 1974-03-18 1975-09-02 Transidyne Gen Corp Automatic gain adjustment for scanning densitometer output device
US3942898A (en) * 1974-07-25 1976-03-09 Beckman Instruments, Inc. Densitometer for measuring the density of an optical element such as a film badge
US3918815A (en) * 1974-08-05 1975-11-11 Rca Corp Densitometer for measuring average aperture diameter
JPS5329798A (en) * 1976-08-31 1978-03-20 Shimadzu Corp Densitometer
DE2640442C3 (de) * 1976-09-08 1979-09-20 Agfa-Gevaert Ag, 5090 Leverkusen Vorrichtung zur Ermittlung von extremen Dichtewerten
US4557604A (en) * 1979-12-26 1985-12-10 Verbatim Corporation Floppy disk transmissivity meter
US4424589A (en) * 1980-04-11 1984-01-03 Coulter Systems Corporation Flat bed scanner system and method
JPS56154650A (en) * 1980-04-30 1981-11-30 Dainippon Screen Mfg Co Ltd Measuring apparatus of film blackening quantity
JPS57142548A (en) * 1981-02-27 1982-09-03 Dainippon Screen Mfg Co Ltd Photographic density detector for film
US4603956A (en) * 1984-11-16 1986-08-05 Pako Corporation Film-width and transmittance scanner system
US4697236A (en) * 1985-03-11 1987-09-29 Helena Laboratories Corporation Densitometer with automatic gain and reference value adjustment of analog waveform
US4700058A (en) * 1985-08-01 1987-10-13 General Electric Company Film writing system with closed loop control for electronic images
US4757334A (en) * 1986-12-09 1988-07-12 Ivan Volent System for density correction of medical imaging film hard copy

Also Published As

Publication number Publication date
EP0505079B1 (de) 1997-10-01
JP3269568B2 (ja) 2002-03-25
EP0505079A1 (de) 1992-09-23
DE69222456T2 (de) 1998-03-19
US5117119A (en) 1992-05-26
JPH0593974A (ja) 1993-04-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: EASTMAN KODAK CO., ROCHESTER, N.Y., US

8327 Change in the person/name/address of the patent owner

Owner name: CARESTREAM HEALTH, INC., ROCHESTER, N. Y., US

8339 Ceased/non-payment of the annual fee