NL8203869A - Van achteren verlicht kopieerbord met een lichtverzwakker. - Google Patents

Van achteren verlicht kopieerbord met een lichtverzwakker. Download PDF

Info

Publication number
NL8203869A
NL8203869A NL8203869A NL8203869A NL8203869A NL 8203869 A NL8203869 A NL 8203869A NL 8203869 A NL8203869 A NL 8203869A NL 8203869 A NL8203869 A NL 8203869A NL 8203869 A NL8203869 A NL 8203869A
Authority
NL
Netherlands
Prior art keywords
light
attenuator
constant
straight lines
lines
Prior art date
Application number
NL8203869A
Other languages
English (en)
Dutch (nl)
Original Assignee
Itek Corp
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 Itek Corp filed Critical Itek Corp
Publication of NL8203869A publication Critical patent/NL8203869A/nl

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
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/62—Holders for the original
    • G03B27/6207—Holders for the original in copying cameras

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Image Input (AREA)
  • Projection-Type Copiers In General (AREA)
  • Optical Filters (AREA)
NL8203869A 1981-10-05 1982-10-05 Van achteren verlicht kopieerbord met een lichtverzwakker. NL8203869A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/308,329 US4387985A (en) 1981-10-05 1981-10-05 Unique copyboard having unique light attenuator
US30832981 1981-10-05

Publications (1)

Publication Number Publication Date
NL8203869A true NL8203869A (nl) 1983-05-02

Family

ID=23193550

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8203869A NL8203869A (nl) 1981-10-05 1982-10-05 Van achteren verlicht kopieerbord met een lichtverzwakker.

Country Status (10)

Country Link
US (1) US4387985A (it)
JP (1) JPS5872110A (it)
BE (1) BE894583A (it)
CA (1) CA1179176A (it)
DE (1) DE3236490A1 (it)
FR (1) FR2514158B1 (it)
GB (1) GB2107888B (it)
IT (1) IT1152684B (it)
NL (1) NL8203869A (it)
SE (1) SE447850B (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3430932A1 (de) * 1984-08-22 1986-03-06 Polychrome GmbH, 3360 Osterode Belichtungseinheit fuer druckplatten-kopiergeraet
EP0258416A4 (en) * 1986-02-28 1988-08-17 Carlson Co Chesley F TEST LIGHT.
US5024512A (en) * 1986-07-18 1991-06-18 American Photo Systems, Inc. Microfilm reader with microfilm and reticle images provided to each of two binocular eyepieces
US4912505A (en) * 1989-03-23 1990-03-27 The Mead Corporation Contrast control device for a slit-type copier exposure system
CA2153210A1 (en) * 1995-06-30 1996-12-31 C. Rex Welsh Apparatus and method for computerized acquisition of x-ray images

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB414164A (en) * 1933-03-10 1934-08-02 Charles Arnold Barron Improvements in or relating to apparatus for the photographic reproduction of drawings and the like
US2384578A (en) * 1943-03-10 1945-09-11 Bausch & Lomb Optical element
NL6410904A (it) * 1963-10-10 1965-04-12
CH405752A (de) * 1963-11-05 1966-01-15 Alos Ag Einrichtung zum gleichmässigen Ausleuchten einer Fläche, insbesondere für Reproduktionszwecke, sowie Verfahren zur Herstellung der Einrichtung
US3375752A (en) * 1965-02-19 1968-04-02 Itek Corp Copyboard lighting system
US3519346A (en) * 1968-05-28 1970-07-07 Itek Corp Method of producing photographic negatives and prints
US4059357A (en) * 1976-04-02 1977-11-22 Beckman Instruments, Inc. Densitometer calibrated reference standard
US4260256A (en) * 1978-11-17 1981-04-07 Eastman Kodak Company Apparatus for measuring illuminance
DE7933777U1 (de) * 1979-11-30 1980-04-24 Dr. Boeger Duplomat Apparate Kg (Gmbh & Co), 2000 Wedel Unterlichtkasten fuer reproduktionskameras

Also Published As

Publication number Publication date
IT8223604A0 (it) 1982-10-04
US4387985A (en) 1983-06-14
SE8205652D0 (sv) 1982-10-04
IT1152684B (it) 1987-01-07
DE3236490A1 (de) 1983-04-21
JPS5872110A (ja) 1983-04-30
FR2514158A1 (fr) 1983-04-08
SE447850B (sv) 1986-12-15
GB2107888B (en) 1984-10-24
FR2514158B1 (fr) 1986-04-11
SE8205652L (sv) 1983-04-06
CA1179176A (en) 1984-12-11
GB2107888A (en) 1983-05-05
BE894583A (fr) 1983-04-05

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
CNR Transfer of rights (patent application after its laying open for public inspection)

Free format text: ITEK GRAPHIX CORP.

BV The patent application has lapsed