DE121195C - - Google Patents
Info
- Publication number
- DE121195C DE121195C DE1900121195D DE121195DA DE121195C DE 121195 C DE121195 C DE 121195C DE 1900121195 D DE1900121195 D DE 1900121195D DE 121195D A DE121195D A DE 121195DA DE 121195 C DE121195 C DE 121195C
- Authority
- DE
- Germany
- Prior art keywords
- plate
- press
- paper
- letterpress
- woodbury
- 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 - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M9/00—Processes wherein make-ready devices are used
- B41M9/02—Relief make-readies
- B41M9/04—Relief make-readies photomechanical
Landscapes
- Printing Methods (AREA)
- Printing Plates And Materials Therefor (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Seit langer Zeit ist man bestrebt, die auf manuellem Wege hergestellten Zurichtungen der Buchdruckchliches durch auf photochemischem Wege hergestellte Reliefs zu ersetzen. Es wurde zu dem Zweck vorgeschlagen, von dem zuzurichtenden Cliche einen Abdruck auf transparentes Papier zu machen, nach welchem durch Copiren auf eine photographische Trockenplatte ein Negativ hergestellt wurde, welch letzteres dann als Copirmatrize zur Herstellung des Reliefs mittelst des Pigmentdrucks diente. Die so gewonnenen Zurichtungen haben sich jedoch nicht in der Praxis eingeführt, da die Herstellung ziemlich umständlich ist, und es auch schwer oder nicht möglich ist, mit der Druckform in der Gröfse genau übereinstimmende Reliefs zu erzeugen.For a long time there has been an effort to make the preparations made by hand to replace the printed matter with reliefs produced by photochemical means. For the purpose of this, it was proposed to take an imprint of the cliché to be prepared to make transparent paper, after which a negative was produced by copying onto a photographic dry plate, which the latter then served as a copier matrix to produce the relief by means of pigment printing. However, the dressings obtained in this way have not been implemented in practice, since the Manufacture is quite cumbersome, and it is also difficult or impossible with that Printing form to produce reliefs of exactly the same size.
Durch nachstehendes Verfahren werden diese Uebelstände vermieden:These inconveniences can be avoided by the following procedure:
Von einem Buchdruckcliche (Holzschnitt, Strichätzung, Autotypie u. s. w.) wird zunächst ein Abdruck auf ein transparentes Medium, wie Papier, Gelatine, Celluloid oder dergl., hergestellt.From a letterpress cliche (woodcut, line etching, autotype, etc.) is first an impression on a transparent medium such as paper, gelatin, celluloid or the like., manufactured.
Das so gewonnene Positiv wird mit Hülfe des Lichtes auf eine Kupfer-, Messing-, Zinkoder andere Metallplatte oder auch auf Stein in derselben Weise copirt und entwickelt, wie es bei der Herstellung von Hochätzungen üblich ist, und es finden bei diesem Verfahren auch dieselben lichtempfindlichen Substanzen, wie Asphalt, Chromalbumin, Chromgummi, Chromgelatine oder Chromleim oder auch Gemische dieser einzelnen Substanzen, Verwendung.The positive obtained in this way is with the help of light on a copper, brass, zinc or copied and developed on another metal plate or on stone in the same way as it is common in the manufacture of high etchings, and it is found in this process also the same light-sensitive substances, such as asphalt, chrome albumin, chrome rubber, Chrome gelatine or chrome glue or mixtures of these individual substances, use.
Man erhält so eine negative Copie, d. h. das Metall oder der Stein liegt an der den schwarzen Stellen des Positivs entsprechenden Stellen frei, während es an den den transparenten Stellen des Positivs entsprechenden Stellen durch die an diesen Stellen durch die Einwirkung des Lichtes unlöslich gewordene und daher bei der Entwickelung stehen gebliebene Schicht von Asphalt, Chromalbumin, Chromgummi, Chromgelatine, Chromleimu.s.w. bedeckt ist.So you get a negative copy, i. H. the metal or stone rests on the den black areas of the positive corresponding areas free, while it is on the transparent Place the positive corresponding places through the at these places through the The action of light has become insoluble and has therefore remained in the process of development Layer of asphalt, chrome albumin, chrome rubber, chrome gelatin, chrome glue, etc. is covered.
. Statt direct auf Metall oder Stein zu copiren, kann man das Positiv auch auf photolithographisches Umdruck- oder Pigmentpapier copiren und die Copie dann in bekannter Weise auf Metall oder Stein übertragen und entwickeln.. Instead of copying directly onto metal or stone, the positive can also be copied onto photolithography Copy transfer or pigment paper and then transfer the copy to metal or stone in a known manner and to develop.
Wenn man nun die so vorbereitete Metalloder Steinplatte in ein Aetzmittel, welches das betreffende Metall löst, wie Säure, Eisenchlorid und dergl., bringt, so kann diese Lösung das Metall oder den Stein nur an den freiliegenden Stellen angreifen, da an den übrigen Stellen das Aetzmittel durch die das Metall oder den Stein bedeckende Schicht zurückgehalten wird.If you now put the prepared metal or stone slab in a caustic agent which dissolves the metal in question, such as acid, ferric chloride and the like., then this solution can do that Only attack the metal or the stone in the exposed areas, as in the other areas the etchant is retained by the layer covering the metal or stone.
Man erhält so ein Relief, in dem umgekehrt wie bei einem Buchdruckcliche die den schwarzen Stellen des Positivs entsprechenden Stellen vertieft, die den weifsen Stellen des Positivs entsprechenden Stellen dagegen erhaben sind.In this way a relief is obtained in which, contrary to a letterpress cliché, the black areas of the positive, which correspond to the white areas of the On the other hand, positively corresponding points are raised.
Dieses Relief ist um so tiefer, je langer man das Aetzmittel auf die Platte einwirken läfst. Von der so gewonnenen Tiefdruckplatte könnenThis relief is deeper, the longer you let the etchant act on the plate. You can use the gravure plate obtained in this way
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT9475D AT9475B (en) | 1900-04-26 | 1901-05-31 | Process for the photomechanical production of arrangements for the letterpress press. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE121195T |
Publications (1)
Publication Number | Publication Date |
---|---|
DE121195C true DE121195C (en) |
Family
ID=5656822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1900121195D Expired - Lifetime DE121195C (en) | 1900-04-26 | 1900-04-26 |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE121195C (en) |
-
1900
- 1900-04-26 DE DE1900121195D patent/DE121195C/de not_active Expired - Lifetime
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