IT1085310B - Dispositivo di illuminazione e regolazione della quantita' di luce,per macchine per la preparazione di matrici da stampa per via elettrostatica - Google Patents

Dispositivo di illuminazione e regolazione della quantita' di luce,per macchine per la preparazione di matrici da stampa per via elettrostatica

Info

Publication number
IT1085310B
IT1085310B IT19874/77A IT1987477A IT1085310B IT 1085310 B IT1085310 B IT 1085310B IT 19874/77 A IT19874/77 A IT 19874/77A IT 1987477 A IT1987477 A IT 1987477A IT 1085310 B IT1085310 B IT 1085310B
Authority
IT
Italy
Prior art keywords
lighting
machines
preparation
light
regulation device
Prior art date
Application number
IT19874/77A
Other languages
English (en)
Original Assignee
Grafosol Spa
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 Grafosol Spa filed Critical Grafosol Spa
Priority to IT19874/77A priority Critical patent/IT1085310B/it
Priority to US05/872,488 priority patent/US4171905A/en
Priority to DE19782803803 priority patent/DE2803803A1/de
Priority to FR7803448A priority patent/FR2379843A1/fr
Priority to GB3963/78A priority patent/GB1580771A/en
Application granted granted Critical
Publication of IT1085310B publication Critical patent/IT1085310B/it

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
    • G03G15/043—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 with means for controlling illumination or exposure
    • G03G15/0435—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 with means for controlling illumination or exposure by introducing an optical element in the optical path, e.g. a filter
    • 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
    • G03B27/522—Projection optics
    • G03B27/525—Projection optics for slit exposure
    • G03B27/526—Projection optics for slit exposure in which the projection optics move

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
IT19874/77A 1977-02-02 1977-02-02 Dispositivo di illuminazione e regolazione della quantita' di luce,per macchine per la preparazione di matrici da stampa per via elettrostatica IT1085310B (it)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IT19874/77A IT1085310B (it) 1977-02-02 1977-02-02 Dispositivo di illuminazione e regolazione della quantita' di luce,per macchine per la preparazione di matrici da stampa per via elettrostatica
US05/872,488 US4171905A (en) 1977-02-02 1978-01-26 Device for illuminating and adjusting the amount of light in machines for electrostatically preparing printing matrices
DE19782803803 DE2803803A1 (de) 1977-02-02 1978-01-28 Vorrichtung zur beleuchtung und regulierung der lichtstaerke fuer maschinen zur herstellung von druckmatrizen auf elektrostatischem weg
FR7803448A FR2379843A1 (fr) 1977-02-02 1978-01-31 Dispositif d'eclairage et de regulation de la quantite de lumiere pour machines pour la preparation de matrices de tirage par voie electrostatique
GB3963/78A GB1580771A (en) 1977-02-02 1978-02-01 Device for iluuminating an object during electrostatic reproduction thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT19874/77A IT1085310B (it) 1977-02-02 1977-02-02 Dispositivo di illuminazione e regolazione della quantita' di luce,per macchine per la preparazione di matrici da stampa per via elettrostatica

Publications (1)

Publication Number Publication Date
IT1085310B true IT1085310B (it) 1985-05-28

Family

ID=11161974

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19874/77A IT1085310B (it) 1977-02-02 1977-02-02 Dispositivo di illuminazione e regolazione della quantita' di luce,per macchine per la preparazione di matrici da stampa per via elettrostatica

Country Status (5)

Country Link
US (1) US4171905A (it)
DE (1) DE2803803A1 (it)
FR (1) FR2379843A1 (it)
GB (1) GB1580771A (it)
IT (1) IT1085310B (it)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4279497A (en) * 1976-05-18 1981-07-21 Ricoh Company, Ltd. Electrostatic copying machine
US4260249A (en) * 1979-09-17 1981-04-07 International Business Machines Two slit illumination aperture
US4380390A (en) * 1979-10-29 1983-04-19 Canon Kabushiki Kaisha Exposure correcting device
DE3303283A1 (de) * 1982-02-01 1983-08-11 Ricoh Co., Ltd., Tokyo Bildbelichtungssystem
US4575228A (en) * 1983-11-14 1986-03-11 Petro-Fax, Inc. Illumination apparatus for copying machines
DE3414278C2 (de) * 1984-04-14 1986-03-06 Agfa-Gevaert Ag, 5090 Leverkusen Blendensteuervorrichtung für eine Spaltblende eines Mikrofilm-Lese- und -Rückvergrößerungsgerätes
US4629308A (en) * 1984-07-06 1986-12-16 Savin Corporation Lens and shutter positioning mechanism for variable-magnification copier
JPS61193156A (ja) * 1985-02-22 1986-08-27 Oak Seisakusho:Kk 露光装置と露光操作方法
ATE80479T1 (de) * 1986-07-08 1992-09-15 Noritsu Koki Co Ltd Beleuchtungseinrichtung zur verwendung in einem elektrophotographischen kopiergeraet.
JPS63174346U (it) * 1986-10-16 1988-11-11
US4924269A (en) * 1987-10-28 1990-05-08 Minolta Camera Kabushiki Kaisha Original illuminating apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2149404B2 (de) * 1971-10-04 1976-09-30 Hoechst Ag, 6000 Frankfurt Belichtungseinrichtung fuer elektrophotographische reproduktionsgeraete
US4068948A (en) * 1974-07-04 1978-01-17 Gerhard Ritzerfeld Copying apparatus
US3981577A (en) * 1974-09-18 1976-09-21 Xerox Corporation Optical system for an electrophotographic printing machine
DE2528925A1 (de) * 1975-06-28 1977-01-13 Agfa Gevaert Ag Fotokopiergeraet

Also Published As

Publication number Publication date
GB1580771A (en) 1980-12-03
DE2803803A1 (de) 1978-08-03
US4171905A (en) 1979-10-23
FR2379843B1 (it) 1984-06-08
FR2379843A1 (fr) 1978-09-01

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