DE463443C - Manufacture of developers and additions to developers - Google Patents

Manufacture of developers and additions to developers

Info

Publication number
DE463443C
DE463443C DEG71481D DEG0071481D DE463443C DE 463443 C DE463443 C DE 463443C DE G71481 D DEG71481 D DE G71481D DE G0071481 D DEG0071481 D DE G0071481D DE 463443 C DE463443 C DE 463443C
Authority
DE
Germany
Prior art keywords
developers
manufacture
brown
additions
tones
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
DEG71481D
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.)
Gevaert Photo Producten NV
Original Assignee
Gevaert Photo Producten NV
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 to BE354963D priority Critical patent/BE354963A/xx
Application filed by Gevaert Photo Producten NV filed Critical Gevaert Photo Producten NV
Priority to DEG71481D priority patent/DE463443C/en
Application granted granted Critical
Publication of DE463443C publication Critical patent/DE463443C/en
Priority to FR662398D priority patent/FR662398A/en
Priority to GB2999328A priority patent/GB298953A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29—Development processes or agents therefor
    • G03C5/305—Additives other than developers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Color Printing (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Description

Herstellung von Entwicklern und Zusätzen zu Entwicklern Entwicklungspapiere und Diapositivtnaterial, welche Bilder in braunen Tönen beim Entwickeln in verdünnten Bädern geben, sind bereits im Handel.Manufacture of developers and additives to developers developing papers and transparencies which thinned images in brown tones when developed in Giving baths are already on the market.

Es ist bekannt, daB eine ähnliche Braunentwicklung mit weniger verdünntem bzw. normal konzentriertem Entwickler durch Zusatz von Natriumthiosulfat zu demselben erreicht werden kann. Sehr leicht erhält man diese braunen Töne, wenn obigem Entwickler stark die Entwicklung verzögernde Stoffe, z. B. Kaliummetabisulfit K,S.06 oder Bromkalium, zugesetzt werden. Nur müssen dann selbstverständlich die Drucke reichlich überbelichtet werden.It is known that a similar brown development occurs with less dilute or normally concentrated developer by adding sodium thiosulphate to the same can be reached. These brown tones can be obtained very easily with the above developer strong development retarding substances, e.g. B. Potassium metabisulphite K, S.06 or potassium bromide, can be added. But then of course the prints have to be overexposed will.

Bekannt sind auch jene patentamtlich geschützten Verfahren der nachträglichenBrauntönung von Bildern mit Selensalzen.Those patented processes of subsequent browning are also known of pictures with selenium salts.

Alle diese und analoge Verfahren führen zu Drucken von Farbtönen eines sehr kleinen Bereiches (meist von Olivgrün über Braun bis Rötel) der Farbskala.All of these and analogous processes result in printing of shades of one very small area (mostly from olive green to brown to red chalk) of the color scale.

Es gelingt nun, durch einfache direkte Entwicklung Bilder in allen Tönen fast der ganzen Farbskala: Von Braun über Rot, Purpur, Violett bis Tiefblau zu erzielen. Zu diesem Zweck setzt man zum Entwickler neben N atriumthiosulfat eine geringe Menge von N atriumselenit oder eines anderen Selensalzes. Fügt man diesem selenhaltigen Entwickler entwicklungsverzögernde Stoffe, wie Bromkalium, zu, so resultieren violette bis blaue Farbtöne, fügt man Entwicklungsbeschleuniger, wie kohlensaures Natron oder N atriumthiosulfat, zu, so erreicht man die braunen bis roten Töne.It is now possible by simple direct development of images in all Tones of almost the entire range of colors: from brown to red, purple, violet to deep blue to achieve. For this purpose, one adds a to the developer in addition to sodium thiosulphate small amount of sodium selenite or another selenium salt. One adds to this selenium-containing developers retard development substances, such as potassium bromide, so if the result is violet to blue color tones, development accelerators such as carbonate of soda or sodium thiosulfate, too, so you get the brown up red tones.

Claims (1)

PATENTANSPRUCH: Herstellung von Entwicklern und Zusätzen zu Entwicklern, dadurch gekennzeichnet, daB zum Entwickler Selenite, Salze oder Lösungen des Selens zugegeben werden, welche dazu dienen, auf Entwicklungspapieren oder Diapositivmaterial oder sonstigen mit Emulsion versehenen Schichtträgern Bilder in Farbtönen, wie Braun, Rot, Purpur, Violett und Blau, zu erzielen.PATENT CLAIM: Manufacture of developers and additives to developers, characterized in that selenites, salts or solutions of selenium are used as the developer can be added, which are used to print on developing papers or transparencies or other substrates provided with emulsion images in shades of color, such as brown, Red, purple, purple and blue, to achieve.
DEG71481D 1927-10-17 1927-10-17 Manufacture of developers and additions to developers Expired DE463443C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE354963D BE354963A (en) 1927-10-17
DEG71481D DE463443C (en) 1927-10-17 1927-10-17 Manufacture of developers and additions to developers
FR662398D FR662398A (en) 1927-10-17 1928-10-16 Manufacture of development baths for photographs and products to add to these baths
GB2999328A GB298953A (en) 1927-10-17 1928-10-17 Improvements in developers for photographic purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG71481D DE463443C (en) 1927-10-17 1927-10-17 Manufacture of developers and additions to developers

Publications (1)

Publication Number Publication Date
DE463443C true DE463443C (en) 1928-07-28

Family

ID=7135104

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG71481D Expired DE463443C (en) 1927-10-17 1927-10-17 Manufacture of developers and additions to developers

Country Status (4)

Country Link
BE (1) BE354963A (en)
DE (1) DE463443C (en)
FR (1) FR662398A (en)
GB (1) GB298953A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2188477B1 (en) 2007-08-03 2014-11-05 VKR Holding A/S Multiple glazing window unit with moulded border element and means for connection to the window frame

Also Published As

Publication number Publication date
BE354963A (en)
FR662398A (en) 1929-08-06
GB298953A (en) 1929-09-26

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