AT34664B - Process for the production of natural color photographs by photographic copying of negatives recorded by means of multi-color line screens and connected to them. - Google Patents

Process for the production of natural color photographs by photographic copying of negatives recorded by means of multi-color line screens and connected to them.

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Publication number
AT34664B
AT34664B AT34664DA AT34664B AT 34664 B AT34664 B AT 34664B AT 34664D A AT34664D A AT 34664DA AT 34664 B AT34664 B AT 34664B
Authority
AT
Austria
Prior art keywords
negatives
recorded
production
color
photographic copying
Prior art date
Application number
Other languages
German (de)
Original Assignee
Raster Ges M B H Deutsche
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
Priority claimed from DE1905193463D external-priority patent/DE193463C/de
Application filed by Raster Ges M B H Deutsche filed Critical Raster Ges M B H Deutsche
Application granted granted Critical
Publication of AT34664B publication Critical patent/AT34664B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung   naturfarbiger   Photographie durch photographisches Kopieren 
 EMI1.1 
 



   Die Erfindung betrifft ein Verfahren zur Herstellung farbiger positiver Photographien nach Negativen, die in bekannter Weise hinter Mehrfarbrastern gewonnen sind. Werden diese Negative durch den Aufnahmeraster hindurch betrachtet, so erscheinen sie in den   Komplementär-   farben zum Original gefärbt. Macht   man   von ihnen eine neue Aufnahme oder Kopie unter Einschaltung eines Farbenrasters, so erhält man also Positive in den richtigen Farben. 



   Notwendig ist es aber hiebei, dass die Felder des für die Kopie oder für die erneute Auf-   nahme   benutzten Farbrasters gleichmässig über das gesamte Bildfeld verteilt sind, damit nicht an einzelnen Stellen ein   Zusammenfallen     gleichfarbiger     Rasterfelder   in höherem Masse erfolgt als an den anderen.   l'iii   diese Bedingung zu erfüllen, obgleich zwei Raster nicht zur Deckung 
 EMI1.2 
 und verwendet auch bei der neuen   Aufnahme oder Kopie wieder solche Linienraster   (die ihrerseits mit der lichtempfindlichen Schicht   verbunden sind), stellt diese aber so.   dass die Liniensysteme beider Raster sich während des Kopierens in rechtem oder schiefem Winkel kreuzen. 



  Damit ist auch die Möglichkeit gegeben, Vergrösserungen der Farbrasternegative herzustellen. 



   Bei diesem Verfahren kann von solchen Farblinienrastern Gebrauch gemacht werden, die in bekannter Weise aus Blöcken von verschiedenfarbigen Folien durch senkrecht zur FolienHache geführte Schnitte hergestellt sind und deren wechselnde Farbenlinien somit aus abwechselnd verschiedenfarbigen Schichten   lichtdurchlässiger Stoffe bestehen.   



   Die zur Benutzung gelangenden oben erwähnten Linienraster   werden zweckmässig mit     einem     schützenden Überzug versehen, um   den Zusammenhang der Schichten zu sichern und sodann   untrennbar   mit der lichtempfindlichen Schicht verbunden. 



   Dies geschieht in der Weise, dass man den Raster   zum   Schutze gegen   mechanische und     chemische Einwirkungen   bei den nachfolgenden   Vorgängen   der Belichtung und des Kopierens mit einer dünnen Schicht Kollodium überkleidet oder durch dünne, mit dem Raster zu verbindende Zelluloidhäutechen schützt oder ihn in ein dünnes schützendes Medium einbettet, so dass der Raster eine zusammenhängende feste Folie bildet, auf welche die Emulsion aufgebracht wird. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for producing natural color photography by photographic copying
 EMI1.1
 



   The invention relates to a process for the production of colored positive photographs from negatives which have been obtained in a known manner behind multicolor screens. If these negatives are viewed through the exposure grid, they appear colored in the complementary colors to the original. If you make a new picture or copy of them using a color grid, you get positives in the right colors.



   In this case, however, it is necessary that the fields of the color grid used for the copy or for the new recording are evenly distributed over the entire image field so that the same-colored grid fields do not coincide to a greater extent at individual points than at the others. l'iii to meet this condition, although two grids do not coincide
 EMI1.2
 and also uses such line grids for the new picture or copy (which are in turn connected to the light-sensitive layer), but places them that way. that the line systems of both grids cross at right or oblique angles during copying.



  This also gives the possibility of producing enlargements of the color grid negatives.



   In this method use can be made of such color line grids, which are made in a known manner from blocks of differently colored foils by cuts perpendicular to the foil surface and whose changing color lines thus consist of alternating layers of translucent materials.



   The above-mentioned line grids used are expediently provided with a protective coating in order to ensure the coherence of the layers and then inseparably connected to the light-sensitive layer.



   This is done by covering the grid with a thin layer of collodion to protect it against mechanical and chemical effects during the subsequent exposure and copying processes, or by using thin celluloid membranes to be connected to the grid, or by placing it in a thin protective medium embedded so that the grid forms a cohesive solid film on which the emulsion is applied.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Herstellung naturfarbiger Photographien durch photographisches Kopiperen von mittels Mehrfarblinienrastern aufgenommenen und mit diesen verbundenen Negativen, EMI1.3 I deren Liniell die Rasterlinien des Negativs während des Kopierens in rechtem oder schiefem Winkel kreuzen. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the production of natural color photographs by photographic copying of negatives recorded by means of multi-color line grids and connected to them, EMI1.3 I whose lines the raster lines of the negative while copying in right or crooked Cross angles. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT34664D 1905-03-22 1907-12-23 Process for the production of natural color photographs by photographic copying of negatives recorded by means of multi-color line screens and connected to them. AT34664B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1905193463D DE193463C (en) 1905-03-22

Publications (1)

Publication Number Publication Date
AT34664B true AT34664B (en) 1908-10-10

Family

ID=5739215

Family Applications (1)

Application Number Title Priority Date Filing Date
AT34664D AT34664B (en) 1905-03-22 1907-12-23 Process for the production of natural color photographs by photographic copying of negatives recorded by means of multi-color line screens and connected to them.

Country Status (1)

Country Link
AT (1) AT34664B (en)

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