DE523752C - Device for copying negatives - Google Patents

Device for copying negatives

Info

Publication number
DE523752C
DE523752C DEG78395D DEG0078395D DE523752C DE 523752 C DE523752 C DE 523752C DE G78395 D DEG78395 D DE G78395D DE G0078395 D DEG0078395 D DE G0078395D DE 523752 C DE523752 C DE 523752C
Authority
DE
Germany
Prior art keywords
light
negatives
flaps
copying
shaft
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
DEG78395D
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.)
WILHELM GOFFERJE
Original Assignee
WILHELM GOFFERJE
Publication date
Priority to DEG78395D priority Critical patent/DE523752C/en
Application granted granted Critical
Publication of DE523752C publication Critical patent/DE523752C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B27/00Photographic printing apparatus
    • G03B27/02Exposure apparatus for contact printing
    • G03B27/14Details
    • G03B27/28Edge-masking devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Description

Es sind schon Apparate zum Kopieren mehrerer Negative von verschiedener Dichte bekannt, welche mit Lichtreguliervorrichtungen, z. B. durch Hoch- und Tiefstellung der Lampen in einem Lichtschacht, durch Querschieber verschiedener Dichte, durch elektrische Widerstände usw., versehen sind.There are already machines for copying several negatives of different densities known which with light regulating devices, e.g. B. by superscript and subscript the Lamps in a light shaft, through cross slides of different densities, through electrical ones Resistors etc. are provided.

Die Erfindung betrifft ebenfalls eine Kopiervorrichtung mit Lichtschacht, an dessenThe invention also relates to a copier with a light shaft on which

ίο Innenwänden nach der Erfindung mehrere Klappen von verschiedener Lichtdurchlässigkeit übereinander drehbar angebracht sind, um durch Verstellen oder Ubereinanderlegen dieser Klappen eine Lichtregelung zu erzielen. Der Erfindungsgegenstand ist in den Fig. ι bis 5 im Längsschnitt, Grundriß und Querschnitt dargestellt. Um eine Achse i (Fig. 3) im Lichtschacht p drehbare Klappen a, b mit verschiedener Lichtdurchlässigkeit können durch Übereinanderklappen (Fig. 4, a, b) oder auch durch beliebige Seitenverstellung (Fig. 5, d) so eingestellt werden, daß nicht nur eine beliebig starke Lichtabschwächung erfolgen kann, sondern auch eine einseitige Lichtabdeckung der Negative as (N, Fig. ι und 2), um die zu dichten Stellen im Negativ mit mehr Licht zu beschicken (Fig. 5, Lichtstrahl e) und um bei zu dünnen Negativstellen das Licht beliebig abdekken können (Fig. 4, a, b, /). So ist die Möglichkeit gegeben, aneinandergereihte Bildserien mittels einer einzigen Belichtung gleichmäßig und rasch fertigzustellen, ohne besondere Retusche für Abdeckung zu gebrauchen.ίο inner walls according to the invention several flaps of different light transmittance are rotatably mounted on top of each other in order to achieve a light control by adjusting or overlapping these flaps. The subject of the invention is shown in FIGS. 1 to 5 in longitudinal section, plan and cross section. About an axis i (Fig. 3) in the light shaft p rotatable flaps a, b with different light transmittance can be adjusted by folding over each other (Fig. 4, a, b) or by any lateral adjustment (Fig. 5, d) so that not only an arbitrarily strong light attenuation can take place, but also a one-sided light cover of the negatives as (N, Fig. ι and 2) in order to fill the dense areas in the negative with more light (Fig. 5, light beam e) and in order to thin negative areas can cover the light as desired (Fig. 4, a, b, /). This gives the opportunity to complete a series of images in a row by means of a single exposure evenly and quickly, without the need for special retouching for covering.

Claims (1)

Patentanspruch:Claim: Vorrichtung zum Kopieren von Negativen, bei der das Licht durch einen Schacht einfällt, dadurch gekennzeichnet, daß an den Innenwänden des Lichtschachtes {S) mehrere Klappen {a, b, d, f) von verschiedener Lichtdurchlässigkeit übereinander drehbar angebracht sind, um durch Ubereinanderlegen der Klappen eine Lichtabdeckung des ganzen Negativs oder durch Schrägstellen der Klappen eine teilweise Lichtabdeckung des Negativs zu erzielen.Device for copying negatives, in which the light falls through a shaft, characterized in that on the inner walls of the light shaft {S) several flaps {a, b, d, f) of different light transmittance are rotatably mounted on top of each other to allow the Flaps to achieve light coverage of the entire negative or a partial light coverage of the negative by tilting the flaps. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DEG78395D Device for copying negatives Expired DE523752C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG78395D DE523752C (en) Device for copying negatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG78395D DE523752C (en) Device for copying negatives

Publications (1)

Publication Number Publication Date
DE523752C true DE523752C (en) 1931-04-27

Family

ID=7136655

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG78395D Expired DE523752C (en) Device for copying negatives

Country Status (1)

Country Link
DE (1) DE523752C (en)

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