DE457203C - Process for making autotypes by copying - Google Patents

Process for making autotypes by copying

Info

Publication number
DE457203C
DE457203C DED52369D DED0052369D DE457203C DE 457203 C DE457203 C DE 457203C DE D52369 D DED52369 D DE D52369D DE D0052369 D DED0052369 D DE D0052369D DE 457203 C DE457203 C DE 457203C
Authority
DE
Germany
Prior art keywords
autotypes
copying
making
copied
graduation
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
DED52369D
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.)
Individual
Original Assignee
Individual
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 claimed from DED50987D external-priority patent/DE450708C/en
Application filed by Individual filed Critical Individual
Priority to DED52369D priority Critical patent/DE457203C/en
Application granted granted Critical
Publication of DE457203C publication Critical patent/DE457203C/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
    • G03F5/00—Screening processes; Screens therefor
    • G03F5/22—Screening processes; Screens therefor combining several screens; Elimination of moiré

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Description

Verfahren zur Herstellung von Autotypien durch Kopieren. In dem Patent 450 708 wird ein Verfahren beschrieben, das bezweckt, auf schnelle und einfache Art und Weise Autotypien herzustellen. Zu diesem Zweck sollen einerseits auf die empfindliche photographische Platte vor der Entwicklung, anderseits auf die lichtempfindliche Metallplatte Skalenraster kopiert werden, wodurch sich eine Zerlegung vom Licht bis zum Schatten ergibt, und zwar geschieht im wesentlichen die Zerlegung des Schattens durch Kopieren eines Skalenrasters auf die photographische Platte, die Zerlegung des Lichtes durch weiteres Kopieren eines Skalenrasters auf die lichtempfindliche Metallplatte.Process for the production of autotypes by copying. In the patent 450 708 a method is described which aims to be quick and easy How to make autotypes. For this purpose, on the one hand, the sensitive photographic plate before development, on the other hand on the photosensitive plate Metal plate scale grids can be copied, resulting in a decomposition of the light down to the shadow, and essentially the decomposition of the shadow takes place by copying a scale grid on the photographic plate, the decomposition of the light by further copying a scale grid onto the light-sensitive Metal plate.

Eingehende Versuche haben ergeben, daß dasselbe Resultat auch erzielt werden kann, wenn die photographische Platte nicht durch einen Skalenraster belichtet wird, sondern wenn man, was ja im Effekt dasselbe ist, zwischen photographische Platte und lichtempfindliche Metallplatte einen Skalenraster schaltet. Diesen Skalenraster kann man beispielsweise herstellen, indem man die bereits entwickelte photographische-Platte mit einer lichtempfindlichen Schicht überzieht und auf dieser lichtempfindlichen Schicht einen Skalenraster herstellt. Oder man kann, was ja an sich bekannt ist, während des Kopierens des Negativs einen auf einer durchsichtigen Unterlage befindlichen Skalenraster vor die Metallplatte schalten. In beiden Fällen resultiert auf der Metallplatte eine Kopie, die im Schatten bereits richtige Zerlegung zeigt, während die Lichter nur latent ankopieren. Wird nun auf die lichtemfindliche Metallplatte vor der Entwicklung noch ein Skalenraster kopiert, so überlegt sich das Licht entsprechend den latent kopierten Stellen mit einer vollkommen richtigen Zerlegung.Thorough tests have shown that the same result is also achieved can be if the photographic plate is not exposed through a graduation screen becomes, but if one, which is the same in effect, between photographic Plate and light-sensitive metal plate switches a scale grid. This scale grid can be made, for example, by using the already developed photographic plate coated with a photosensitive layer and photosensitive on this Layer creates a scale grid. Or you can, which is known per se, while the negative is being copied, one is on a transparent base Place the scale grid in front of the metal plate. In both cases the result is Metal plate a copy that shows correct decomposition while in the shade the lights only latently copied. Is now on the light-sensitive metal plate If a scale grid is copied before development, the light thinks about it accordingly the latently copied passages with a perfectly correct decomposition.

Gegen das Hauptpatent bedeutet dieses Verfahren zweifellos eine technische Weiterführung, da die Beurteilung eines nicht rastrierten Negativs naturgemäß leichter und die Zerlegung des kopierten Bildes nicht mehr von Zufälligkeiten der photographischen Aufnahme abhängig ist.Against the main patent, this process is undoubtedly a technical one Continuation, since the assessment of a negative that has not been castrated is naturally easier and the decomposition of the copied image no longer depends on the accidents of the photographic Recording is dependent.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Autotypien durch Kopieren gemäß dem Patent 450 708, dadurch gekennzeichnet, daß erstens ein Halbtonnegativ unter gleichzeitiger Vor- oder Zwischenschaltung eines Skalenrasters und: zweitens ein Skalenraster allein oder in umgekehrter Reihenfolge auf die Ätzplatte kopiert werden.Claim: method for the production of autotypes by copying according to patent 450 708, characterized in that firstly a halftone negative with simultaneous upstream or intermediate graduation and secondly a graduation graduation alone or in reverse order are copied onto the etching plate.
DED52369D 1926-07-29 1927-02-25 Process for making autotypes by copying Expired DE457203C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED52369D DE457203C (en) 1926-07-29 1927-02-25 Process for making autotypes by copying

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DED50987D DE450708C (en) 1926-07-29 1926-07-29 Process of making autotypes
DED52369D DE457203C (en) 1926-07-29 1927-02-25 Process for making autotypes by copying

Publications (1)

Publication Number Publication Date
DE457203C true DE457203C (en) 1928-03-09

Family

ID=25972456

Family Applications (1)

Application Number Title Priority Date Filing Date
DED52369D Expired DE457203C (en) 1926-07-29 1927-02-25 Process for making autotypes by copying

Country Status (1)

Country Link
DE (1) DE457203C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746623C (en) * 1938-06-25 1944-08-16 Emil Baer Process for making screened colloid relief printing forms

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746623C (en) * 1938-06-25 1944-08-16 Emil Baer Process for making screened colloid relief printing forms

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