DE436044C - Process for preparing photographic halftone recordings for the production of printing forms - Google Patents

Process for preparing photographic halftone recordings for the production of printing forms

Info

Publication number
DE436044C
DE436044C DEB123314D DEB0123314D DE436044C DE 436044 C DE436044 C DE 436044C DE B123314 D DEB123314 D DE B123314D DE B0123314 D DEB0123314 D DE B0123314D DE 436044 C DE436044 C DE 436044C
Authority
DE
Germany
Prior art keywords
halftone
recordings
production
printing forms
negative
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
DEB123314D
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.)
BERLIN NEURODER KUNSTANSTALTEN
Original Assignee
BERLIN NEURODER KUNSTANSTALTEN
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 BERLIN NEURODER KUNSTANSTALTEN filed Critical BERLIN NEURODER KUNSTANSTALTEN
Priority to DEB123314D priority Critical patent/DE436044C/en
Application granted granted Critical
Publication of DE436044C publication Critical patent/DE436044C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F3/00—Colour separation; Correction of tonal value
    • G03F3/02—Colour separation; Correction of tonal value by retouching

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)

Description

Verfahren zum Vorbereiten photographischer Halbtonaufnahmen für die Erzeugung von Druckformen.Process for preparing halftone photographic recordings for Production of printing forms.

Zusatz zum Patent 433390 ach dem Hauptpatent wird zur Ausführung des Patentanspruches 2 auf abziehbarem Celloidin- oder Bromsilberpapier eine Kontaktkopie gemacht und die so gewonnene Kontaktkopie seitenverkehrt auf einen Träger (Papier, Glas usw.) übertragen und auf dieser Kopie die Retusche vorgenommen. An Stelle der Herstellung einer Kontaktkopie auf abziehbarem, photographischem Papier und dessen Übertragung auf eine andere Unterlage nimmt man nach der vorliegenden Erfindung bei der Aufnahme der Farbauszughalbtonnegative ein besonderes Konternegativ auf. --Kopien davon, auf Bromsilber- oder Celloidinpapier, die zur Retusche dienen sollen, haben gleich die. richtige Seitenstellung. Dieses Negativ wird in bekannter Weise dadurch erzielt, daß man die photographische Platte mit der Schicht verkehrt in die Kassette legt. Man hat es nun nicht mehr nötig wie im Hauptverfahren dargetan, ein abziehbares, photographisches Papier zu verwenden und dasselbe seitenverkehrt auf einen anderen Träger zu übertragen, sondern es werden von den in diesem Zusatzpatent beschriebenen Platten Kontaktabdrücke auf photographischem Papier gemacht. Diese Kontaktabdrücke werden passend zu den Farbauszügen retuschiert und im übrigen in gleicher Weise verwendet, wie dies in der Beschreibung des Hauptpatents zu Anspruch a näher ausgeführt ist.Addition to patent 433390 after the main patent is used to execute the Claim 2 a contact copy on peelable celloidin or bromide silver paper made and the contact copy obtained in this way reversed on a carrier (paper, Glass, etc.) and retouched on this copy. Instead of Making a contact copy on removable photographic paper and its Transfer to another substrate takes place according to the present invention when recording the color separation halftone negatives on a special counter negative. - Copies of it, on silver bromide or celloidin paper to be used for retouching, have the same. correct lateral position. This negative is made in a known manner obtained by inverting the photographic plate with the layer in puts the cassette. It is no longer necessary, as demonstrated in the main proceedings, Use a removable photographic paper and reverse it to be transferred to another carrier, but it will be used by those in this additional patent plates made contact prints on photographic paper. These Contact prints are retouched to match the color extracts and otherwise in used in the same way as in the description of the main patent to claim a is detailed.

Claims (1)

P_l,TRNT-ANSPRUCH Ausführung des Verfahrens zum Vorbereiten photographischer Halbtonaufnahmen für die Erzeugung von Druckformen nach (lern Patent 4.3339o, dadurch gekennzeichnet, daß bei der Aufnahme der Halbtonnegative (Farbauszüge) ein weiteres sogenanntes Konternegativ mit aufgenommen wird, welches, mit der Schicht nach hinten in der Kassette belichtet, die richtige Seitenstellung ergibt, und von dem ein Kontaktabdruck auf photographischem Papier retuschiert und mit dem erst aufgenommenen und ausgebleichten Negativ zusammen als Positiv zur Aufnahme des Rasternegativs verwendet wird.P_l, TRNT-ANSPRUCH Execution of the method for preparing photographic Halftone recordings for the production of printing forms according to (learn patent 4.3339o, thereby characterized that when recording the halftone negatives (color separations) another so-called counter-negative is included, which, with the layer to the back exposed in the cassette, results in the correct side position, and of which a contact print Retouched on photographic paper and with the first recorded and bleached Negative is used together as a positive for receiving the halftone negative.
DEB123314D 1925-12-20 1925-12-20 Process for preparing photographic halftone recordings for the production of printing forms Expired DE436044C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB123314D DE436044C (en) 1925-12-20 1925-12-20 Process for preparing photographic halftone recordings for the production of printing forms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB123314D DE436044C (en) 1925-12-20 1925-12-20 Process for preparing photographic halftone recordings for the production of printing forms

Publications (1)

Publication Number Publication Date
DE436044C true DE436044C (en) 1926-10-22

Family

ID=6995959

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB123314D Expired DE436044C (en) 1925-12-20 1925-12-20 Process for preparing photographic halftone recordings for the production of printing forms

Country Status (1)

Country Link
DE (1) DE436044C (en)

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