DE381890C - Method of focusing photographic reproduction devices - Google Patents
Method of focusing photographic reproduction devicesInfo
- Publication number
- DE381890C DE381890C DEL55507D DEL0055507D DE381890C DE 381890 C DE381890 C DE 381890C DE L55507 D DEL55507 D DE L55507D DE L0055507 D DEL0055507 D DE L0055507D DE 381890 C DE381890 C DE 381890C
- Authority
- DE
- Germany
- Prior art keywords
- image
- size
- original
- photographic reproduction
- reproduction devices
- 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
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
- G03B27/323—Copying cameras
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Description
Gegenstand der Erfindung ist ein Verfahren, durch welches es sich erübrigt, bei Reproduktionen das Urbild genau einzustellen, vielmehr wird an dessen Stelle ein der gewünschten Größe des Urbildes entsprechendes Bildmaß durch Projektion in der Größe des Urbildes auf eine Projektionsfläche geworfen, dann an Stelle des projizieren Bildgrößenmaßes das Urbild selbst gebracht und das durchsichtige ίο Bildmaß durch einen lichtempfindlichen Schichtträger ersetzt.The subject of the invention is a method by which there is no need for reproductions to set the archetype precisely, rather, in its place one of the desired ones is used Size of the original image corresponding to the size of the image by projection in the size of the original image Thrown onto a projection surface, then instead of the projected image size measure that Original image itself brought and the transparent ίο image dimension by a light-sensitive Layer carrier replaced.
In der Zeichnung ist eine Vorrichtung zur Ausführung dieses Verfahrens dargestellt, und zwar ist Abb. ι eine Seitenansicht und »5 Abb. 2 ein Grundriß der Vorrichtung.The drawing shows a device for carrying out this method, namely Fig. 1 is a side view and Fig. 2 is a plan view of the device.
Die Vorrichtung besteht aus einer Kammer ι mit Objektiv 2, Bühne 3 für die Platte. Lampengehäuse 4 mit Lichtquelle 5 und Beleuchtungssystem 6. Lampengehäuse nebst Beao leuchtungssystem sind verschiebbar angeordnet, so daß die Bühne 3 freigelegt werden kann und dann besser zugänglich ist. Der Apparat ist schlittenartig auf einem Laufboden 7 verschiebbar: an dessen Ende ist ein as Reißbrett 8 angebracht. Am Reißbrett wiederum befinden sich bewegliche Arme mit ein- und ausschaltbaren Beleuchtungslampen, die in Blendkästen 9 untergebracht sind. Ferner ist an dem Reißbrett ein Arm mit einer roten Lampe 10 befestigt. ■The device consists of a chamber with lens 2, stage 3 for the plate. Lamp housing 4 with light source 5 and lighting system 6. Lamp housing and Beao lighting system are slidably arranged so that the stage 3 is exposed can and is then more accessible. The apparatus is sleigh-like on a walking floor 7 movable: a drawing board 8 is attached to its end. On the drawing board again there are movable arms with lighting lamps that can be switched on and off, which in Blind boxes 9 are housed. There is also an arm with a red on the drawing board Lamp 10 attached. ■
Das Reißbrett dient erstens zum AnheftenFirst of all, the drawing board is used for pinning
der aufzunehmenden Vorlage, zweitens zum Anheften des lichtempfindlichen Papiers.the original to be recorded, secondly for attaching the photosensitive paper.
worauf das Negativ wiederum vergrößert werden soll.whereupon the negative should be enlarged again.
Das Verfahren wird nun folgendermaßen mit dieser Vorrichtung ausgeübt:The procedure is now carried out with this device as follows:
An Stelle der lichtempfindlichen Platte wird in die Bühne des Apparates eine Glasplatte von gleicher Größe eingesetzt, welche mit einer geeigneten scharfen Zeichnung oder Schrift versehen ist. Man schaltet die im Gehäuse des Apparates befindliche Lampe ein. Dadurch wird ein Lichtbild der eingesetzten Platte auf das Reißbrett entworfen. Man stellt durch Verschieben der Kammer auf dem Boden sowie durch Verändern des Zuges das Lichtbild genau auf die Größe scharf ein, welche die aufzunehmende Vorlage hat. Heftet man nun die Vorlage an die Stelle des Reißbrettes, welches von dem Lichtbild bedeckt wird, so wird man bei der nachfolgenden Aufnahme, für welche die Lichtquelle im Gehäuse ausgeschaltet und die Glasplatte durch die lichtempfindliche Platte ersetzt wird, ohne weiteres bei genauer, voller Deckung der Platte eine scharfe Wiedergabe erhalten.Instead of the light-sensitive plate, a glass plate is placed in the stage of the apparatus of the same size used, which with a suitable sharp drawing or writing is provided. The lamp in the housing of the apparatus is switched on. Through this a photo of the inserted plate is drawn on the drawing board. You put through Moving the chamber on the floor as well as changing the train the light image precisely on the size of the original to be recorded. One staples now the template in the place of the drawing board, which is covered by the photo, so you will be in the subsequent recording, for which the light source in the housing is switched off and the glass plate is replaced with the photosensitive plate easily with exact, full coverage of the plate, a sharp reproduction is obtained.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL55507D DE381890C (en) | Method of focusing photographic reproduction devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL55507D DE381890C (en) | Method of focusing photographic reproduction devices |
Publications (1)
Publication Number | Publication Date |
---|---|
DE381890C true DE381890C (en) | 1923-09-25 |
Family
ID=7277016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL55507D Expired DE381890C (en) | Method of focusing photographic reproduction devices |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE381890C (en) |
-
0
- DE DEL55507D patent/DE381890C/en not_active Expired
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