DE69029481D1 - Belichtungsvorrichtung - Google Patents

Belichtungsvorrichtung

Info

Publication number
DE69029481D1
DE69029481D1 DE69029481T DE69029481T DE69029481D1 DE 69029481 D1 DE69029481 D1 DE 69029481D1 DE 69029481 T DE69029481 T DE 69029481T DE 69029481 T DE69029481 T DE 69029481T DE 69029481 D1 DE69029481 D1 DE 69029481D1
Authority
DE
Germany
Prior art keywords
exposure device
exposure
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
DE69029481T
Other languages
English (en)
Other versions
DE69029481T2 (de
Inventor
Brent D Larson
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.)
Cycolor Inc
Original Assignee
Cycolor 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 Cycolor Inc filed Critical Cycolor Inc
Publication of DE69029481D1 publication Critical patent/DE69029481D1/de
Application granted granted Critical
Publication of DE69029481T2 publication Critical patent/DE69029481T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • 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
    • G03B27/54—Lamp housings; Illuminating means
    • G03B27/542—Lamp housings; Illuminating means for copying cameras, reflex exposure lighting
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
DE69029481T 1989-03-23 1990-03-22 Belichtungsvorrichtung Expired - Fee Related DE69029481T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/327,879 US4912505A (en) 1989-03-23 1989-03-23 Contrast control device for a slit-type copier exposure system

Publications (2)

Publication Number Publication Date
DE69029481D1 true DE69029481D1 (de) 1997-02-06
DE69029481T2 DE69029481T2 (de) 1997-07-03

Family

ID=23278478

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69029481T Expired - Fee Related DE69029481T2 (de) 1989-03-23 1990-03-22 Belichtungsvorrichtung

Country Status (6)

Country Link
US (1) US4912505A (de)
EP (1) EP0389277B1 (de)
JP (1) JP2758966B2 (de)
KR (1) KR0150216B1 (de)
CN (1) CN1045871A (de)
DE (1) DE69029481T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02275936A (ja) * 1989-04-18 1990-11-09 Brother Ind Ltd 露光方法
US5400122A (en) * 1993-10-28 1995-03-21 Xerox Corporation Non-linear selectively variable copy contrast adjustment device
US5839035A (en) * 1997-06-02 1998-11-17 Xerox Corporation Photomode contrast control system for an electrostatographic printing machine
WO2005001528A1 (ja) * 2003-06-25 2005-01-06 Nippon Sheet Glass Co., Ltd. 導光体および画像読取装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE847245C (de) * 1943-05-13 1952-08-21 Agfa Camera Werk Muenchen Vorrichtung zur spektralen Veraenderung des Kopierlichtes beim Kopieren oder Vergroessern von Farbnegativen
DE1447846A1 (de) * 1963-02-02 1969-01-02 Howaldtswerke Deutsche Werft Kopierrahmen mit elektronischer Regelvorrichtung der Belichtungszeit und unabhaengiger elektronischer Regelvorrichtung zur Steuerung eines Zusatzlichtes zwecks Gradationswandlung von Kopiermaterialien
GB1182598A (en) * 1966-03-09 1970-02-25 Howson Ltd W H Photographic Enlarger
US3619055A (en) * 1969-06-05 1971-11-09 Sargent Welch Scientific Co Exposure control device
US4257086A (en) * 1979-10-22 1981-03-17 Koehler Manufacturing Company Method and apparatus for controlling radiant energy
JPS5727278A (en) * 1980-07-25 1982-02-13 Canon Inc Scanning and lighting device
US4387985A (en) * 1981-10-05 1983-06-14 Itek Corporation Unique copyboard having unique light attenuator
JPS5878170A (ja) * 1981-11-04 1983-05-11 Toshiba Corp 露光装置
JPS61179550U (de) * 1985-04-26 1986-11-08
JPS62276556A (ja) * 1986-05-24 1987-12-01 Oak Seisakusho:Kk 光源移動型露光装置
JPH01173022A (ja) * 1987-12-28 1989-07-07 Sharp Corp 複写機

Also Published As

Publication number Publication date
JP2758966B2 (ja) 1998-05-28
CN1045871A (zh) 1990-10-03
KR0150216B1 (ko) 1998-12-15
EP0389277A3 (de) 1992-02-26
US4912505A (en) 1990-03-27
EP0389277B1 (de) 1996-12-27
JPH02291542A (ja) 1990-12-03
EP0389277A2 (de) 1990-09-26
KR900014946A (ko) 1990-10-25
DE69029481T2 (de) 1997-07-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee