DE550217C - Device for the transillumination of photographic plates, drawings, documents or the like for the purpose of making copies or enlargements - Google Patents

Device for the transillumination of photographic plates, drawings, documents or the like for the purpose of making copies or enlargements

Info

Publication number
DE550217C
DE550217C DEZ19073D DEZ0019073D DE550217C DE 550217 C DE550217 C DE 550217C DE Z19073 D DEZ19073 D DE Z19073D DE Z0019073 D DEZ0019073 D DE Z0019073D DE 550217 C DE550217 C DE 550217C
Authority
DE
Germany
Prior art keywords
drawings
documents
enlargements
transillumination
photographic plates
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
DEZ19073D
Other languages
German (de)
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
Publication date
Priority to DEZ19073D priority Critical patent/DE550217C/en
Application granted granted Critical
Publication of DE550217C publication Critical patent/DE550217C/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
    • G03B27/00—Photographic printing apparatus
    • G03B27/02—Exposure apparatus for contact printing
    • G03B27/14—Details
    • G03B27/16—Illumination arrangements, e.g. positioning of lamps, positioning of reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Description

Bei den bis jetzt bekannten Beleuchtungseinrichtungen für Vervielfältigungs- oder Vergrößerungszwecke ist der "Übelstand vorhanden, daß z. B. bei einem Kopierapparat die photographische Platte nicht in allen Teilen gleichmäßig ausgeleuchtet wird. Es liegt dies hauptsächlich an der Art und Anordnung der hierbei zur Verwendung gelangenden Lichtquelle.In the previously known lighting devices for duplication or For purposes of enlargement, there is the disadvantage that, for example, with a copier the photographic plate is not illuminated evenly in all parts. It this is mainly due to the type and arrangement of the used here Light source.

»o So finden z. B. für Kopierapparate Sofittenlampen Verwendung, welche aber durchaus nicht das gesamte Kopierfeld in allen Teilen ausleuchten. Auch hat man bereits versucht, das Kopierfeld durch eine größere Anzahl elektrischer Glühlampen zu beleuchten; auch dies zeigt nicht den gewünschten Erfolg, da diese Lampen eine enorme Hitze entwickeln, welche für das zu beleuchtende Negativ schädlich ist.»O Find z. B. for copiers sofa lamps Use which, however, by no means illuminates the entire copy field in all parts. Also one has already tried to illuminate the copying field with a larger number of electric light bulbs; even this does not show the desired success, as these lamps develop an enormous amount of heat, which is harmful to the negative to be illuminated.

Erfindungsgemäß wird dieser Übelstand dadurch vermieden, daß man statt der üblichen elektrischen Glühlampenbeleuchtung die aktinisch wirksameren Gasentladungsröhren bzw. Metalldampflampen verwendet und diese der Fläche des zu durchleuchtenden Objektes anpaßt.According to the invention, this drawback is avoided in that instead of the usual electric incandescent lamp lighting the actinically more effective gas discharge tubes or metal halide lamps are used and these adapt to the area of the object to be x-rayed.

Solche Lampen finden zwar schon für Reklamezwecke Verwendung, ohne daß aber dort die Bedingungen, wie sie für den vorgenannten Zweck erforderlich sind, eine Rolle spielen. Auch hat man bereits für Lichtpausäpparate eine oder mehrere Quecksilberlampen benutzt, jedoch wird auch von diesen das Kopierfeld nicht in der gewünschten Weise beleuchtet.Such lamps are already used for advertising purposes, but without that there the conditions as they are necessary for the aforementioned purpose play a role to play. You also already have one or more mercury lamps for blueprints used, but the copying field is not illuminated in the desired way by these either.

Diese Nachteile werden nach der Erfindung dadurch beseitigt, daß man die Gasentladungsröhre in einem Röhrenzug der Fläche der zu durchleuchtenden Platte o. dgl. anpaßt.These disadvantages are eliminated according to the invention in that the gas discharge tube in a tube train of the surface of the plate to be x-rayed or the like. Adjusts.

Die durch den Röhrenzug entstandenen ♦<> Zwischenräume können zur weiteren Verbesserung der Beleuchtung durch die Anordnung einer weiteren Rohrschlange, welche unterhalb der ersten Schlange angeordnet ist, ausgefüllt werden. Auf diese Weise ist die Möglichkeit gegeben, die Durchleuchtung photographischer Platten, Schriftstücke o. dgl. füi den obenerwähnten Zweck mit größter Gleichmäßigkeit durchzuführen.The ♦ <> Gaps can be used to further improve the lighting through the arrangement another pipe coil, which is arranged below the first coil, fill out. In this way there is the possibility of fluoroscopy photographic plates, documents or the like for the above-mentioned purpose with the greatest Perform evenness.

In den Abb. 1 und 2 ist die Erfindung in einem Ausführungsbeispiel an einem Kopierapparat dargestellt. Im Innern des Kopierapparates ι ist unterhalb der photographischen Platte 2 eine Gasentladungsröhre bzw. Metalldampflampe 3 schlangenartig angeordnet.In Figs. 1 and 2, the invention is in one embodiment on a copier shown. Inside the copier ι is below the photographic Plate 2 a gas discharge tube or metal vapor lamp 3 arranged in a serpentine manner.

Claims (2)

Patentansprüche:Patent claims: 1. Einrichtung zur Durchleuchtung von photographischen Platten, Zeichnungen, Schriftstücken o. dgl. zwecks Anfertigung von Kopien oder Vergrößerungen unter Verwendung einer Gasentladungsröhre oder Metalldampflampe als Lichtquelle, dadurch gekennzeichnet, daß der Röhrenverlauf der Lampe der Fläche der zu 6s durchleuchtenden Platte o. dgl. angepaßt ist.1. Equipment for the screening of photographic plates, drawings, Documents or the like for the purpose of making copies or enlargements using a gas discharge tube or metal vapor lamp as the light source, characterized in that the tube course adapted to the lamp of the surface of the plate or the like that can be transilluminated for 6s is. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß unterhalb der ersten Leuchtschlange eine zweite derartig angeordnet ist, daß dieselbe die Zwischenräume" der ersten Schlange durchleuchtet.2. Device according to claim 1, characterized in that below the first luminous snake a second one is arranged in such a way that the same the spaces " the first snake x-rayed. Hierzu ι Blatt ZeichnungenFor this purpose ι sheet of drawings
DEZ19073D Device for the transillumination of photographic plates, drawings, documents or the like for the purpose of making copies or enlargements Expired DE550217C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEZ19073D DE550217C (en) Device for the transillumination of photographic plates, drawings, documents or the like for the purpose of making copies or enlargements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ19073D DE550217C (en) Device for the transillumination of photographic plates, drawings, documents or the like for the purpose of making copies or enlargements

Publications (1)

Publication Number Publication Date
DE550217C true DE550217C (en) 1932-05-06

Family

ID=7624758

Family Applications (1)

Application Number Title Priority Date Filing Date
DEZ19073D Expired DE550217C (en) Device for the transillumination of photographic plates, drawings, documents or the like for the purpose of making copies or enlargements

Country Status (1)

Country Link
DE (1) DE550217C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046476B (en) * 1954-04-26 1958-12-11 Remy Jean Chevalier Device for illuminating documents and similar objects for the purpose of photographic reproduction
DE1111941B (en) * 1957-01-07 1961-07-27 Zindler Lumoprint Kg Surface light for copiers
US3814519A (en) * 1971-12-29 1974-06-04 Capitol Reproductions Photographic exposure apparatus
DE3912300A1 (en) * 1989-04-14 1990-10-18 Joerg Michael Uhl Element set for non-pattern prodn. of luminous letter signs - has at least two respectively equilateral triangle and circular sector having hollow translucent housing with light source

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046476B (en) * 1954-04-26 1958-12-11 Remy Jean Chevalier Device for illuminating documents and similar objects for the purpose of photographic reproduction
DE1111941B (en) * 1957-01-07 1961-07-27 Zindler Lumoprint Kg Surface light for copiers
US3814519A (en) * 1971-12-29 1974-06-04 Capitol Reproductions Photographic exposure apparatus
DE3912300A1 (en) * 1989-04-14 1990-10-18 Joerg Michael Uhl Element set for non-pattern prodn. of luminous letter signs - has at least two respectively equilateral triangle and circular sector having hollow translucent housing with light source

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