US1928181A - Method of making photographic prints - Google Patents

Method of making photographic prints Download PDF

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Publication number
US1928181A
US1928181A US600993A US60099332A US1928181A US 1928181 A US1928181 A US 1928181A US 600993 A US600993 A US 600993A US 60099332 A US60099332 A US 60099332A US 1928181 A US1928181 A US 1928181A
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US
United States
Prior art keywords
actinic
background
color
prints
printing
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
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US600993A
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English (en)
Inventor
Loening Erich
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Individual
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Individual
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Publication date
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Publication of US1928181A publication Critical patent/US1928181A/en
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    • 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
    • G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
    • G03F1/90—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof prepared by montage processes

Definitions

  • Application r and My invention relates to a method of making photographic prints from printing forms showing illustrations, type matter, or both.
  • I may apply a non-actinic or less actinic color 'to the background, and an'actinic or more actinic color to the surface of the form, or vice versa.
  • FIG. 1 and 2 show two methods of coloring the background and the surface of a form in plan
  • Fig. 3 is a cross section of a form.
  • the surface and the background must be colored in such manner that the actinic properties of the surface are as different as possible from those of the background.
  • case (a) is illustrated in Fig. 1, and case (b) in Fig. 2. It will appear that the type 2 in Fig. 1 and 4 in Fig. 2, is very markedly contrasted with the background of the form l in Fig. 1 and 3 in Fig. 2.
  • an inactinic color say black
  • highly actinic properties are imparted to its surface by applying thereto' a color such as white or silver, etc.
  • the black or other inactinic color may be removed from the surface by a wipercr the like, but this is not indispensable. If the form is coated with an actinic color, such as white, the surface is coated with an inactinic color, such as black.
  • a negative is made on very hard" plates or the like by a camera, or preferably by one of Obviously the negative may be made not only on transparent bearers, such as plates or films, but on bearers of any other material, for instance, paper.
  • the object of my method is to increase the contrasts of the original, i. e. the form, so that a well-contrasted negative will be obtained. 'It has been found that with the is not dark enough.
  • the unremoved portions of the sensiof the sensitized layer and developed with pyrocatecholwithout sulfite are or sodium sulfate and intensified, if required.
  • the result is a positive copy with glassy background and clearly defined opaque type.
  • the method of making photographic fulltone prints from letterpress printing forms comprising applying to the background and to the surface of a printing form coloring' matter of contrasted actinic properties, photographing the formand forming a relief by removing the parts not exposed to light by dissolving with a nontanning developer.
  • the method of'making photographic fulltone prints from letterpressprinting forms comprising applying to the background and to the surface of a printing form coloring matter of contrasted actinic properties, photographing the form and forming a relief by developing the negative with non-tanning developers and by dissolving the exposed portions with hydrogen peroxide'.
  • the method of making photographic fulltone prints from letterpress printing forms comprising applying to the background and to the surface of a printing form coloring matter of contrasted actinic properties, photographing the form and forming a' relief by treating the exposed film with developers and dissolving agents, and making the sensitized layer as opaque as required by repeated developing of the nonremoved portions.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
US600993A 1931-04-01 1932-03-24 Method of making photographic prints Expired - Lifetime US1928181A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE385808X 1931-04-01

Publications (1)

Publication Number Publication Date
US1928181A true US1928181A (en) 1933-09-26

Family

ID=6370872

Family Applications (1)

Application Number Title Priority Date Filing Date
US600993A Expired - Lifetime US1928181A (en) 1931-04-01 1932-03-24 Method of making photographic prints

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US (1) US1928181A (en))
BE (1) BE387500A (en))
GB (1) GB385808A (en))
NL (1) NL33194C (en))

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609293A (en) * 1948-12-02 1952-09-02 George L Morrison Method of photographing printing forms

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609293A (en) * 1948-12-02 1952-09-02 George L Morrison Method of photographing printing forms

Also Published As

Publication number Publication date
GB385808A (en) 1933-01-05
NL33194C (en))
BE387500A (en))

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