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US2131298A - Process for the photomechanical production of single- or multicolor pictures or writing on hard material - Google Patents

Process for the photomechanical production of single- or multicolor pictures or writing on hard material Download PDF

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Publication number
US2131298A
US2131298A US124738A US12473837A US2131298A US 2131298 A US2131298 A US 2131298A US 124738 A US124738 A US 124738A US 12473837 A US12473837 A US 12473837A US 2131298 A US2131298 A US 2131298A
Authority
US
United States
Prior art keywords
writing
hard material
light
colors
pictures
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
Application number
US124738A
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English (en)
Inventor
Prinz Leopold
Morgenstern Paul
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.)
PRIMOGRAPHIC Co Ltd
Original Assignee
PRIMOGRAPHIC Co Ltd
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 PRIMOGRAPHIC Co Ltd filed Critical PRIMOGRAPHIC Co Ltd
Application granted granted Critical
Publication of US2131298A publication Critical patent/US2131298A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/26—Processing photosensitive materials; Apparatus therefor
    • G03F7/28—Processing photosensitive materials; Apparatus therefor for obtaining powder images

Definitions

  • colors hitherto found to be suitable for the sprayprocesses may be used as the light-hardenable ing method, for example aniline. dyes, are not alayer, p e e ab te-a men aye It ways fast to light. The majority 01' colors'cahas now been found that it is possible, when using pable of -being sprayed attack the chromate-alpowdered mineral pi ments. toprovide a light- 5 bumen layer, or destroy itinparts, so that it has hardenable layer of such composition that the 66 a i lines could not be coming smudged time required for drying v by the addition of a 15% alum solution to the chromate-albumen solution before application to the material.
  • the powdered mineral pigment is thereby rapidly absorbed, with the result 'that the time required for drying is very much reduced.
  • the addition of. alum to the light-hardenable layer has the effect oi making the colors harder, the latter are not impaired in any way in the course of the development in water and also do not tend to become smudged in the course of the usual treatment with the cotton wool pad.
  • development refers to the step of rendering the image visible by removal of unhardened parts of the exposed light-sensitive layer by washing with water. Rapidity of drying is thus achieved in the case of the invention by two means, namely byan addition of alum to the light-hardenable coating, and by an addition of petrol to the powdered mineral pigments.
  • the invention further provides of obtaining multi-color reproductions simpler manner than hitherto, ample, by spraying on several colors simultaneously, if they are spaced apart, or in succession with the employment of stencils or masks.
  • the application by spraying of a plurality of colors by means of stencils is known in the production the possibility in afar of signs whenthe colors are applied directly, 1. e.
  • Copies obtained by the new process may be employed as advertisement signs, makers nameplates and output-plates, scales more particularly for wireless sets for which high demands are made as regards sharpness of outline, watch and clock glasses, advertising mirrors, and other advertisement plates, translucent. writing on mirrors, transparencies, etc., and the process may be carried out on any hard material, such as glass, metal, Celluloid, wood and the like.
  • Figure 1 is a plan view of an advertising plaque
  • Figure 2 is a section taken on the line 2-2 in Figure Lbutonanenlargedscale
  • Figure 3 is a plan view showing part of a station indicator of a radio-receiving set.
  • an advertising plaque comprises a sheet or plate of glass Ill provided on the rear facewith a black legend i2 and a multicolor picture whereof the parts I are red and the parts l6 are black.
  • the parts l2, l4 and i6 constituting the legend and picture may consist of powdered mineral pigment in a varnish, or in a mixture of varnish and lavender oil, provided as described above.
  • a background ll constituted by a gold or yellow ground coating is provided on the back of the plaque by spraying and forms a protective covering which, however, in some cases may be omitted, especially when it is desired that those parts of the plaque not covor the like shall be transparent.
  • the thickness of the layers i2, i4, i6, i8 is exaggerated for the sake of clearness.
  • 1 lb. maycontain 58% mineral
  • the ink serves for modifying the color or tone of the powdered mineral pigment that is employed, and in some cases may be omitted.
  • the station indicator consists of a sheet or plate of glass Ill having three wave-length scales 2!, 2
  • Each scale and its associated legends are shown ample green, black and red, as indicated in the drawing. No protective coating or colored ground is provided on this indicator in order that it may be almost wholly transparent.
  • a process for of multi-color pictures or legends rial comprising the steps of exposing to light through a nsparency comprising an original to be copied, a light-hardenable coating on the hard material'that contains alum in solution and exhibits a differential hardening on exposure to light, spraying a plgality of powdered mineral pigments with the d of stencils, one for each color, which pigments are each dispersed in a fluid medium comprising approximately 10% of printers varnish, 30% of a readily volatile liquid and 2%0! oil of lavender, dusting the exposed coating withtalcum powder after the, colored fluid medium has been applied thereto, developing the dried colored exposed'coating by removing its unhardened parts by washing with water, and removing surplus coloring matter from the developed coating.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printing Methods (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Duplication Or Marking (AREA)
US124738A 1936-02-13 1937-02-08 Process for the photomechanical production of single- or multicolor pictures or writing on hard material Expired - Lifetime US2131298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT474404X 1936-02-13

Publications (1)

Publication Number Publication Date
US2131298A true US2131298A (en) 1938-09-27

Family

ID=3674809

Family Applications (1)

Application Number Title Priority Date Filing Date
US124738A Expired - Lifetime US2131298A (en) 1936-02-13 1937-02-08 Process for the photomechanical production of single- or multicolor pictures or writing on hard material

Country Status (6)

Country Link
US (1) US2131298A (fr)
BE (1) BE419975A (fr)
DE (1) DE681496C (fr)
FR (1) FR817530A (fr)
GB (1) GB474404A (fr)
NL (1) NL46164C (fr)

Also Published As

Publication number Publication date
BE419975A (fr)
FR817530A (fr) 1937-09-04
GB474404A (en) 1937-11-01
DE681496C (de) 1939-09-23
NL46164C (fr)

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