DE567997C - Process for the production of master copies for direct and indirect printing processes in single and multi-color printing with simultaneous use of silver and chromate pixels - Google Patents
Process for the production of master copies for direct and indirect printing processes in single and multi-color printing with simultaneous use of silver and chromate pixelsInfo
- Publication number
- DE567997C DE567997C DES79861D DES0079861D DE567997C DE 567997 C DE567997 C DE 567997C DE S79861 D DES79861 D DE S79861D DE S0079861 D DES0079861 D DE S0079861D DE 567997 C DE567997 C DE 567997C
- Authority
- DE
- Germany
- Prior art keywords
- chromate
- silver
- pixels
- direct
- production
- 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
- 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
- G03C5/22—Direct chromate processes, i.e. without preceding silver picture, or agents therefor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
Description
Verfahren zur Herstellung von Kopiervorlagen für direkte und indirekte Druckverfahren im Ein-und Mehrfarbendruck unter gleichzeitiger Anwendung von Silber und Chromatbildpunkten Es ist vorgeschlagen, Kopiervorlagen für direkten und indirekten Druck durch gleichzeitige Anwendung von Silber- und Chromatbildpunkten zu erzielen. Das hierzu vorgeschlagene Verfahren hat aber noch gewisse Nachteile. Die vorliegende Erfindung bezweckt, ein Kopiermaterial zu schaffen, welches diese Nachteile mit Sicherheit vermeidet.Process for the production of master copies for direct and indirect Printing process in single and multi-color printing with simultaneous use of silver and chromate pixels It is suggested to use master copies for direct and indirect Achieve pressure through the simultaneous use of silver and chromate pixels. However, the method proposed for this purpose still has certain disadvantages. The present The invention aims to provide a copy material which has these disadvantages Avoids security.
Die Einlagerung des Bildelementes erfolgt analog den üblichen photographischen Platten, Filmen und Papieren im Kontaktdruck oder mittels geeigneter Apparate.The storage of the picture element takes place analogously to the usual photographic ones Plates, films and papers in contact printing or by means of suitable equipment.
Eine auf einer geeigneten Unterlage aufgebrachte silbersalzhaltige Gelatine- oder Collodiumemulsion wird in der Dunkelkammer in einer der bekannten Chromatsalzlösungen, z. B. Ammoniumbichromatlösung, gebadet und getrocknet, unter einer Kopiervorlage, z. B. unter einem Negativ, belichtet. Das Einlegen in den Kopierrahmen muß ebenfalls in der Dunkelkammer erfolgen. Die Belichtungszeit entspricht den üblichen Kopierzeiten von Chromatschichten. Nach dem Kopieren wird die erhaltene Chromatkopie ebenfalls in der Dunkelkammer i Minute gewässert, um das in der Silberschicht enthaltene Chromat zu entfernen. Die gewässerte Kopie, auf welcher das Chromatbild deutlich sichtbar ist, kommt nun einige Minuten in einen geeigneten Entwickler. Es wird sich nun zeigen, daß die vom Licht getroffenen Stellen, also das lichtgehärtete Chromatbild, trotz der Härtung nur an den gehärteten Stellen sich schwarz färben.A silver salt-containing Gelatin or collodion emulsion is made in the darkroom in one of the well-known Chromate salt solutions, e.g. B. ammonium dichromate solution, bathed and dried, under a master copy, e.g. B. under a negative, exposed. Placing in the copy frame must also be done in the darkroom. The exposure time corresponds to the usual Copy times of chromate layers. After copying, the obtained chromatic copy becomes also soaked in the darkroom for one minute to remove that contained in the silver layer Remove chromate. The watered copy on which the chromate image is clear is visible, is now a few minutes in a suitable developer. It will now show that the areas hit by the light, i.e. the light-hardened chromate image, in spite of the hardening only turn black in the hardened areas.
Bei dieser Art von Tiefeneinlagerung ist es ausgeschlossen, daß die Ungleichheiten in der Schichtstärke sich durch Wolkenpartien zeigen.With this type of deep storage it is impossible that the Inequalities in the layer thickness can be seen through parts of the cloud.
Es hat sich dabei gezeigt, daß die Tiefeneinlagerung der Rasterbildelemente sich dem Charakter der benutzten Kopiervorlage, z. B. dem Negativ, voll angepaßt und ein scharf begrenzter Rasterpunkt bis auf den Schichtträger sich gebildet bat. Man hat also auf diese Art Einlagerung einen scharfbegrenzten kegelförmigen Rasterpunkt eingelagert.It has been shown that the depth storage of the raster picture elements the character of the master copy used, e.g. B. the negative, fully adapted and a sharply delimited grid point was formed except for the layer support. In this way you have a sharply delimited, conical grid point stored.
Der Vorteil dieser Art Einlagerung und Form zeigt sich deutlich, nachdem die in erwähnter Weise genügend geschwärzte Kopie ausfixiert ist. Die durch Fixierung mit Fixiernatron gewollte Zerstörung des unbelichteten Silbers erfolgt nur an den unbelichteten Stellen, und die so erhaltenen, nun ätzfähigen Kopien zeigen eine Tiefeneinlagerung, welche eine weitestgehende Ätzung von der fast geschlossenen Tiefe bis zum kleinsten Lichtpunkt durch die bekannten Abschwächer ermöglichen. Zufolge des bis auf den Träger durchgeschwärzten, in der gehärteten Chromatschicht eingelagerten Rasterpunktes ist eine Abnahme an Deckung nicht sichtbar, und die geätzten Kopien weisen eine größere Deckkraft auf, als die bekannten Kopiervorlagen, welche im Collodiumemulsionsverfahren hergestellt werden.The advantage of this type of storage and shape is clearly evident after the copy that has been sufficiently blackened in the manner mentioned is fixed out. The by fixation Deliberate destruction of the unexposed silver with fixing soda occurs only on the unexposed areas, and the thus obtained, now etchable copies show a Deep storage, which is an extensive etching of the almost closed Allow depth down to the smallest point of light thanks to the well-known attenuator. As a result of the blackened through to the carrier, in the hardened chromate layer stored grid point, a decrease in cover is not visible, and the Etched copies have a greater opacity than the known master copies, which are produced in the collodion emulsion process.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES79861D DE567997C (en) | 1927-05-27 | 1927-05-28 | Process for the production of master copies for direct and indirect printing processes in single and multi-color printing with simultaneous use of silver and chromate pixels |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES0079861 | 1927-05-27 | ||
DES79861D DE567997C (en) | 1927-05-27 | 1927-05-28 | Process for the production of master copies for direct and indirect printing processes in single and multi-color printing with simultaneous use of silver and chromate pixels |
Publications (1)
Publication Number | Publication Date |
---|---|
DE567997C true DE567997C (en) | 1933-01-13 |
Family
ID=25996904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES79861D Expired DE567997C (en) | 1927-05-27 | 1927-05-28 | Process for the production of master copies for direct and indirect printing processes in single and multi-color printing with simultaneous use of silver and chromate pixels |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE567997C (en) |
-
1927
- 1927-05-28 DE DES79861D patent/DE567997C/en not_active Expired
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