AT73697B - Photographic recording material (plates, film, paper, etc.) with added color, which causes a weakening of the photosensitivity. - Google Patents

Photographic recording material (plates, film, paper, etc.) with added color, which causes a weakening of the photosensitivity.

Info

Publication number
AT73697B
AT73697B AT73697DA AT73697B AT 73697 B AT73697 B AT 73697B AT 73697D A AT73697D A AT 73697DA AT 73697 B AT73697 B AT 73697B
Authority
AT
Austria
Prior art keywords
recording material
photographic recording
emulsion
photosensitivity
weakening
Prior art date
Application number
Other languages
German (de)
Inventor
G W Adolf Sosna
Julius E Biedebach
Original Assignee
G W Adolf Sosna
Julius E Biedebach
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 G W Adolf Sosna, Julius E Biedebach filed Critical G W Adolf Sosna
Application granted granted Critical
Publication of AT73697B publication Critical patent/AT73697B/en

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  • Heat Sensitive Colour Forming Recording (AREA)

Description

  

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   vollständig unempfindlich, selbst eine Einwirkung von längerer Dauer hat keinen Einfluss. 



  Bei Kunstlicht von grösserer Helligkeit o4er bei höherem Gehalt an wirksamen Strahlen, kann durch grössere Entfernung der Lichtquelle die Verschleierung vermieden werden. 



  Eine weitere Erfindung besteht das ferneren darin, dass neben den Filterfarbstoffen, Chemikalien, beispielsweise Phenolphtaleïn in die Emulsion eingebracht werden, welche die Emulsion nicht beeinflussen, dagegen mit dem Alkali des Entwicklers chemische Verbindungen eingehen und dadurch eine Färbung der Emulsion im Entwickler herbeiführen, welche als Schutzfärbung, beispielsweise rot, fUr die Emulsion dient. Dadurch werden selbst gedämpfte Tageslichtstrahlen unempfindlich gemacht. 



  Eine neue Wirkung der verwendeten Farbstoffe besteht weiter darin, dass sie neben der Filterwirkung auch in ihrer Eigenschaft als ep ! eher Sensibilisator auf der Emulsion einwirken. 



  Für die Anwendung der Erfindung ist es gleichgiltig, ob eine Färbung der Emulsion vor oder nach dem Aufbringen auf die Unterlagen stattfindet. Es können auch ein oder mehrere Farbstoffträger Anwendung finden. Die verwendeten Farbstoffe sollen sich aus dem Aufnahmematerial restlos wieder entfernen lassen. 



  PATENT-ANSPRÜCHE : 1. Photographisches Aufnahmsmaterial (Platten, Films, Papier usw.) mit Farbzusatz, durch welchen eine Abschwächung der Lichtempfindlichkeit bewirkt wird, gekennzeichnet durch eine Färbung mit violetten Farbstoffen oder deren Nuancen, welche die aktinisch wirkenden Strahlen gewisser Kunstlichtarten unschädlich machen, ohne die Wirksamkeit des Tageslicht wesentlich zu beeinträchtigen.



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   completely insensitive, even long-term exposure has no effect.



  With artificial light of greater brightness or higher content of effective rays, obscuring can be avoided by moving the light source further away.



  Another invention is that in addition to the filter dyes, chemicals such as phenolphthalein are introduced into the emulsion that do not affect the emulsion, but enter into chemical compounds with the alkali of the developer and thereby cause the emulsion to color in the developer, which as Protective coloring, for example red, is used for the emulsion. This makes even muted rays of daylight insensitive.



  Another new effect of the dyes used is that, in addition to the filter effect, they also act as ep! rather sensitizer act on the emulsion.



  For the application of the invention, it does not matter whether the emulsion is colored before or after it is applied to the substrates. One or more dye carriers can also be used. The dyes used should be completely removable from the recording material.



  PATENT CLAIMS: 1. Photographic recording material (plates, film, paper, etc.) with added color which causes a weakening of the photosensitivity, characterized by coloring with violet dyes or their nuances, which render the actinic rays of certain types of artificial light harmless, without significantly impairing the effectiveness of daylight.

Claims (1)

2. Photographisches Aufnahmematerial nach Anspruch 1, dadurch gekennzeichnet, dass neben den Filterfarbstoffen die Ejaulsion nicht beeinnussende Chemikalien, beispielsweise Phenolphtaleïn, eingebracht werden, welche mit dem Alkali des Entwicklers eine, Färbung der Emulsion im Entwickler herbeiführende chemische Verbindungen eingehen, die als Schutzfärbung für dus Emulsion dienen, so dass selbst gedämpfte Tageslichtstrahlen unwirksam gemacht werden. 2. Photographic recording material according to claim 1, characterized in that, in addition to the filter dyes, chemicals that do not affect the ejaulsion, for example phenolphtaleïn, are introduced which, with the alkali of the developer, form chemical compounds which cause the emulsion to color in the developer and act as protective coloring for you Serve emulsion, so that even muted rays of daylight are rendered ineffective. 3. Photographisches Aufnaamematerial nach Anspruch 1, dadurch gekennzeichnet, dass die verwendeten Farbstoffe neuen der Filterwirkung auch in ihrer Eigenschaft als optischer Sensibilisator auf die Emulsion einwirken. 3. Photographic recording material according to claim 1, characterized in that the dyes used act on the emulsion, new to the filter effect, in their property as an optical sensitizer.
AT73697D 1915-07-08 1915-07-08 Photographic recording material (plates, film, paper, etc.) with added color, which causes a weakening of the photosensitivity. AT73697B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT73697T 1915-07-08

Publications (1)

Publication Number Publication Date
AT73697B true AT73697B (en) 1917-08-25

Family

ID=3595368

Family Applications (1)

Application Number Title Priority Date Filing Date
AT73697D AT73697B (en) 1915-07-08 1915-07-08 Photographic recording material (plates, film, paper, etc.) with added color, which causes a weakening of the photosensitivity.

Country Status (1)

Country Link
AT (1) AT73697B (en)

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