GB1354044A - Radiographic reduction methods - Google Patents

Radiographic reduction methods

Info

Publication number
GB1354044A
GB1354044A GB513472A GB513472A GB1354044A GB 1354044 A GB1354044 A GB 1354044A GB 513472 A GB513472 A GB 513472A GB 513472 A GB513472 A GB 513472A GB 1354044 A GB1354044 A GB 1354044A
Authority
GB
United Kingdom
Prior art keywords
crt
density range
record film
recorded
original
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
GB513472A
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.)
Logetronics Inc
Original Assignee
Logetronics Inc
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 Logetronics Inc filed Critical Logetronics Inc
Publication of GB1354044A publication Critical patent/GB1354044A/en
Expired 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
    • G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
    • G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
    • 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
    • G03B1/00—Film strip handling
    • G03B1/42—Guiding, framing, or constraining film in desired position relative to lens system
    • G03B1/48—Gates or pressure devices, e.g. plate
    • 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/003—Apparatus for photographing CRT-screens
    • 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
    • G03B27/725—Optical projection devices wherein the contrast is controlled electrically (e.g. cathode ray tube masking)
    • 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
    • G03B27/80—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus in dependence upon automatic analysis of the original

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Radiography Using Non-Light Waves (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Projection-Type Copiers In General (AREA)
  • Image Processing (AREA)
  • Image Analysis (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Dot-Matrix Printers And Others (AREA)

Abstract

1354044 Projection printing LOGETRONICS Inc 3 Feb 1972 [2 Aug 1971] 5134/72 Heading 92A and 92X A radiographic original 11 having a relatively wide total image density range between 0À0 and 4À0 is printed on a reduced scale on to a dualgradient contrast characteristic record film 14 by the moving spot of light generated in a CRT 10 to produce a copy having a linearly compressed density range. The arrangement is such that any image densities in said original in the range 0 - 2À0 are recorded on the higher contrast gradient portion of the record film and any image densities in excess of 2À0 are recorded on the lower contrast gradient portion. The apparatus is provided with photo-cell detector means 16 which monitors the exposing light beam and controls the intensity of the beam or the deflection velocity on the CRT screen to produce an effect equivalent to "unsharp masking" on the record film over the density range 0 - 2À0. The CRT may be replaced by a scanning laser-beam.
GB513472A 1971-08-02 1972-02-03 Radiographic reduction methods Expired GB1354044A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16811671A 1971-08-02 1971-08-02

Publications (1)

Publication Number Publication Date
GB1354044A true GB1354044A (en) 1974-06-05

Family

ID=22610199

Family Applications (1)

Application Number Title Priority Date Filing Date
GB513472A Expired GB1354044A (en) 1971-08-02 1972-02-03 Radiographic reduction methods

Country Status (7)

Country Link
US (1) US3700329A (en)
JP (1) JPS5126263B2 (en)
BE (1) BE779564A (en)
CA (1) CA972206A (en)
CH (1) CH556557A (en)
GB (1) GB1354044A (en)
NL (1) NL149012B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126740A (en) * 1982-08-09 1984-03-28 Hitachi Ltd Projection imaging

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967893A (en) * 1974-04-29 1976-07-06 Xerox Corporation Illuminating apparatus
JPS55148657A (en) * 1980-03-06 1980-11-19 Daihatsu Motor Co Ltd Hemming method for body structure of automobile
JPS57200716A (en) * 1981-06-04 1982-12-09 Yukiyoshi Kawabata Locking device for screw clamping elastic body
US4433345A (en) * 1981-06-19 1984-02-21 Loge/Dunn Instruments, Inc. Video image recording methods and devices
US4530011A (en) * 1981-06-19 1985-07-16 Loge/Dunn Instruments, Inc. Apparatus for maintaining of a cathode ray tube image within the light acceptance range of a photographic film
US4457618A (en) * 1982-07-01 1984-07-03 Polaroid Corporation Optical system for use in electronic enlarger
US4511925A (en) * 1982-08-16 1985-04-16 Mackenroth Iii Joseph R High intensity ultraviolet light video imaging apparatus
DE8504399U1 (en) * 1985-02-16 1985-05-09 Agfa-Gevaert Ag, 5090 Leverkusen DEVICE FOR PRODUCING PHOTOGRAPHIC IMAGES WITH A PLANM FILM STAGE
US4742397A (en) * 1986-01-16 1988-05-03 Polaroid Corporation System and method for adjusting image brightness in electronic printer
JPS62123376U (en) * 1986-01-29 1987-08-05
JPS6368276A (en) * 1986-09-11 1988-03-28 Ohara Kinzoku Kogyo Kk Method and device for spot welding using one piece of electrifying electrode for welding
JPS6447183A (en) * 1987-08-18 1989-02-21 Fuji Photo Film Co Ltd Image recorder
JPH0251142A (en) * 1988-05-23 1990-02-21 Innov Imaging Sci Inc Method and appratus for generating x-ray pattern
JPH03141344A (en) * 1989-10-27 1991-06-17 Brother Ind Ltd Picture recorder
US6466689B1 (en) * 1991-11-22 2002-10-15 Arch Development Corp. Method and system for digital radiography
US6434262B2 (en) * 1993-09-29 2002-08-13 Shih-Ping Wang Computer-aided diagnosis system and method
WO1999017286A1 (en) * 1997-09-30 1999-04-08 Bohn Jerry W Non-mechanical recording and retrieval apparatus
WO2005045822A1 (en) * 2003-10-29 2005-05-19 Jerry Bohn Non-mechanical recording and retrieval apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126740A (en) * 1982-08-09 1984-03-28 Hitachi Ltd Projection imaging
FR2536547A1 (en) * 1982-08-09 1984-05-25 Hitachi Ltd ALIGNMENT DEVICE FOR PROJECTION, IN PARTICULAR FOR THE MANUFACTURE OF SEMICONDUCTOR DEVICES
US4598197A (en) * 1982-08-09 1986-07-01 Hitachi, Ltd. Projection aligner
US4701608A (en) * 1982-08-09 1987-10-20 Hitachi, Ltd. Projection aligner with a sensor for monitoring light quantity

Also Published As

Publication number Publication date
NL7203260A (en) 1973-02-06
JPS4825523A (en) 1973-04-03
JPS5126263B2 (en) 1976-08-05
CH556557A (en) 1974-11-29
DE2236863B2 (en) 1976-12-02
DE2236863A1 (en) 1973-03-01
NL149012B (en) 1976-03-15
BE779564A (en) 1972-06-16
CA972206A (en) 1975-08-05
US3700329A (en) 1972-10-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee