DE351905C - Brown toning print-out emulsions - Google Patents

Brown toning print-out emulsions

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Publication number
DE351905C
DE351905C DE1921351905D DE351905DD DE351905C DE 351905 C DE351905 C DE 351905C DE 1921351905 D DE1921351905 D DE 1921351905D DE 351905D D DE351905D D DE 351905DD DE 351905 C DE351905 C DE 351905C
Authority
DE
Germany
Prior art keywords
brown
print
toning
emulsions
out emulsions
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
DE1921351905D
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.)
Bayer AG
Original Assignee
Farbenfabriken Vorm Friedr Bayer and Co
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 Farbenfabriken Vorm Friedr Bayer and Co filed Critical Farbenfabriken Vorm Friedr Bayer and Co
Application granted granted Critical
Publication of DE351905C publication Critical patent/DE351905C/en
Expired legal-status Critical Current

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Description

Brauntonende Auskopieremulsionen. Durch das Patent 346851 ist der Zusatz von Schwefel bzw. von Selen und Tellur zu Entwicklungsemulsionen geschützt, die die Empfindlichkeit der Stammemulsion herabsetzen und eine gegen braun hinneigende Färbung des entwickelten Silbers bewirken.Brown toning print-out emulsions. The patent 346851 is the Protected addition of sulfur or selenium and tellurium to development emulsions, which reduce the sensitivity of the stem emulsion and one which tends towards brown Color the developed silver.

Bei der Prüfung der Wirkung der Elemente der Schwefelgruppe in Auskopieremulsionen wurde nun die bemerkenswerte Beobachtung gemacht, daß die unter Zusatz dieser Körper hergestellten Emulsionen bei der Fixierung in einem gewöhnlichen sauren Fixierbad braune Töne ergeben, die sonst nur in einem Tonfixierbad erzielt werden können.When examining the effect of the elements of the sulfur group in print-out emulsions the remarkable observation has now been made that the addition of these bodies produced emulsions when fixing in an ordinary acidic fixing bath result in brown tones that can otherwise only be achieved in a clay fixer.

Die Anwendung des Zusatzes erfolgt bei Zelloidinemulsionen derart, daß eine Lösung von Schwefel in Tetrachlorkohlenstoff in entsprechender Menge der fertigen Zelloidinemulsion beigemengt wird, bei Gelatineauskopieremulsionen zweckmäßig derart, daß eine Lösung von Schwefel in Tetrachlorkohlenstoff, mit Monopolbrillantöl gemischt, der Emulsion zugegeben wird. - Selen und Tellur haben dieselbe Wirkung.The additive is used for celloidin emulsions in such a way that that a solution of sulfur in carbon tetrachloride in an appropriate amount of the finished celloidin emulsion is added, useful for gelatin copier emulsions such that a solution of sulfur in carbon tetrachloride, with monopoly brilliant oil mixed, the emulsion is added. - Selenium and tellurium have the same effect.

Claims (1)

PATENT-ANsPRUcH Auskopieremulsionen besonders für braune Töne, gekennzeichnet durch einen Gehalt an Elementen der Schwefelgruppe.PATENT CLAIM Copy-out emulsions, especially for brown tones, marked by a content of elements of the sulfur group.
DE1921351905D 1921-03-08 1921-03-08 Brown toning print-out emulsions Expired DE351905C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE351905T 1921-03-08

Publications (1)

Publication Number Publication Date
DE351905C true DE351905C (en) 1922-04-18

Family

ID=6271783

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1921351905D Expired DE351905C (en) 1921-03-08 1921-03-08 Brown toning print-out emulsions

Country Status (1)

Country Link
DE (1) DE351905C (en)

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