DE439669C - Process for the production of printing forms for the printing process in gelatine colors - Google Patents
Process for the production of printing forms for the printing process in gelatine colorsInfo
- Publication number
- DE439669C DE439669C DEC37871D DEC0037871D DE439669C DE 439669 C DE439669 C DE 439669C DE C37871 D DEC37871 D DE C37871D DE C0037871 D DEC0037871 D DE C0037871D DE 439669 C DE439669 C DE 439669C
- Authority
- DE
- Germany
- Prior art keywords
- printing
- colors
- production
- gelatine
- forms
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C3/00—Reproduction or duplicating of printing formes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Printing Methods (AREA)
Description
Verfahren zur Herstellung von Druckformen für das Druckverfahren in Gelatinefarben. Ein wesentlicher Mangel des Tiefdruckverfahrens in Gelatinefarben bildete bisher die Unmöglichkeit, die Druckformen zu überarbeiten, da sonst die Zeichnung zerstört worden wäre. Es war daher notwendig, bei Fehlern in den Tonwerten die Negative entsprechend zu ,ändern und neue Formen anzufertigen. Dieser umständliche Weg wurde noch durch die Unsicherheit in der Herstellung der Auswaschreliefs erschwert. Bekanntlich beeinflußt langsames oder rasches Trocknen des Kohlepapiers und die Witterung die Gestaltung des Reliefs sehr wesentlich, so daß erhebliche Schwankungen in den Tonwerten eintreten können.Process for the production of printing forms for the printing process in Gelatin colors. A major deficiency of the gravure printing process in gelatin inks was previously the impossibility of revising the printing forms, otherwise the Drawing would have been destroyed. It was therefore necessary if there were errors in the tonal values to change the negatives accordingly and to make new shapes. This awkward one The way was made more difficult by the uncertainty in the production of the wash-out reliefs. It is known that slow or rapid drying of the carbon paper affects and the Weathering the design of the relief very significantly, so that considerable fluctuations can occur in the tonal values.
Bei dem Tiefdruckverfahren in Gela.tinefarben werden die Bilder durch Ausprägungen der Druckform gebildet. Sollen einzelne Teile der Bilder kräftiger in der Farbe werden, dann müssen die entsprechenden Stellen der Druckform tiefer gelegt werden, sollen andere Teile heller werden, dann müssen sie erhöht werden. Teile der Druckform können dadurch tiefer gelegt werden, daß diese Teile zunächst mit dickflüssiger Farbe überzogen werden. Diese Farbe wird auf der Form eintrocknen gelassen und dann in genauem Passen das Auswaschrelief auf die Druckform gelegt. Wird nun die Bleiform einem nochmaligen Druck ausgesetzt, dann muß die Form an den Stellen, an welchen die Farbe aufgetragen ist, der Dicke der Farbschicht entsprechend tiefer werden. Je nachdem das Relief vertieft werden soll, wird die Farbe dünn- oder dickflüssiger aufgetragen. Statt daß die Farbe auf die Bleiform aufgetragen wird, kann .eine Verstärkung auf der Rückseite des vom Glase- abgezogenen Gelatinereliefs vorgenommen werden. In diesem Falle wird die Preßwirkung des Gelatinereliefs in das Blei, der Dicke der Verstärkung entsprechend, erhöht.With the intaglio printing process in Gela.tine colors, the images are through Forms of the printing form. Should individual parts of the pictures be stronger in the color, then the corresponding areas of the printing form must be deeper are placed, if other parts are to be brighter, then they have to be raised. Parts of the printing form can be placed deeper that these parts first be coated with thick paint. This paint will dry up on the mold left and then placed the wash-out relief on the printing plate in an exact fit. If the lead form is now subjected to another pressure, then the form must touch the Places where the paint is applied, according to the thickness of the paint layer get deeper. Depending on how the relief is to be deepened, the color becomes thin or applied thicker. Instead of the paint being applied to the lead form a reinforcement on the back of the gelatin relief removed from the glass be made. In this case, the pressing action of the gelatin relief in the lead is increased according to the thickness of the reinforcement.
Sollen einzelne Stellen der Bilder heller gedruckt werden, dann werden die Reliefs auf ihrer Rückseite an den Stellen, die heller werden sollen, der Tönung entsprechend abgeschaut. Bai dem Prägen einer neuen Druckform wird das Relief an diesen Stellen weniger tief eingepreßt und die Bilder entsprechend heller.If individual areas of the images are to be printed lighter, then the reliefs on their back in the places that should be lighter, the tint copied accordingly. When a new printing form is embossed, the relief is on pressed in less deeply in these areas and the images are correspondingly lighter.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEC37871D DE439669C (en) | 1926-02-16 | 1926-02-17 | Process for the production of printing forms for the printing process in gelatine colors |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEC0037871 | 1926-02-16 | ||
DEC37871D DE439669C (en) | 1926-02-16 | 1926-02-17 | Process for the production of printing forms for the printing process in gelatine colors |
Publications (1)
Publication Number | Publication Date |
---|---|
DE439669C true DE439669C (en) | 1927-01-15 |
Family
ID=25970176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEC37871D Expired DE439669C (en) | 1926-02-16 | 1926-02-17 | Process for the production of printing forms for the printing process in gelatine colors |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE439669C (en) |
-
1926
- 1926-02-17 DE DEC37871D patent/DE439669C/en not_active Expired
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