US2425068A - Drawing medium and method of making the same - Google Patents

Drawing medium and method of making the same Download PDF

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Publication number
US2425068A
US2425068A US509269A US50926943A US2425068A US 2425068 A US2425068 A US 2425068A US 509269 A US509269 A US 509269A US 50926943 A US50926943 A US 50926943A US 2425068 A US2425068 A US 2425068A
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US
United States
Prior art keywords
pattern
patterns
medium
sheet
transparent
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
US509269A
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English (en)
Inventor
Maurice D Mcintosh
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.)
LOUIS S SANDERS
Original Assignee
LOUIS S SANDERS
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 to US245068D priority Critical patent/USB245068I5/en
Application filed by LOUIS S SANDERS filed Critical LOUIS S SANDERS
Priority to US509269A priority patent/US2425068A/en
Application granted granted Critical
Publication of US2425068A publication Critical patent/US2425068A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G03F1/68—Preparation processes not covered by groups G03F1/20 - G03F1/50
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/152—Making camera copy, e.g. mechanical negative
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24835—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including developable image or soluble portion in coating or impregnation [e.g., safety paper, etc.]

Definitions

  • This invention relates, as indicated, to drawing media and tcmethods of making the same.
  • a primary object of the invention is to provide media ⁇ which are not only useful for preparing mechanical and engineering drawings, but which may also be effectively used as photographic transparencies for the reproduction of such drawings in the form of prints of various kinds, such as blue prints, black and white prints, Ozalid prints and the like.
  • Another object of the invention is to provide a medium of the character described which is transparent or translucent and which bears on both surfaces thereon, patterns which are also of a transparent or translucent character, and which may be chemically developed to provide shading for drawings executed on such medium.
  • a further object of the invention is to provide a medium of the character described in which the pattern on one surface may be geometrically related to that on the other surface, or may be entirely unrelated to and independent of the latter.
  • a still further object of the invention is to Drovide a medium of the character described which bears on one surface thereof a plurality of patterns of a transparent or translucent character,
  • one of the patterns being developable by a developer solution capable of developing said pattern only and all of the patterns being developable by a developer solution capable of developing all of the patterns collectively.
  • a still further object of the invention is to provide methods of preparing such drawing media.
  • FIG. 1 is a fragmentary view of a drawing medium, showing line patterns thereon in undeveloped condition
  • Fig. 2 is a view similar to Fig. l, but showing the development of one of the patterns.
  • Fig. 3 is a view similar to Fig. 2, but showing the development of both patterns
  • Fig. 4 is a view similar to Fig. l, but showing a dot pattern on one side of the medium;
  • Fig. 5 is a View similar to Fig. 4, but showing the development of the dot pattern
  • Fig. 6 is a view showing a photographic transparency made in accordance with the invention.
  • Fig. 1 shows a hase sheet l which is substantially transparent or translucent, and which may be 2 an ordinary sheet of tracing paper cr tracing cloth, such as is commonly used by draftsmen and is capable o-f transmitting actinic rays,
  • a second pattern consisting, in this instance, of closely spaced parallel lines of a chemical cornpound 3, the pattern being similar in all respects to the pattern 2, that is to say, it is substantially transparent or translucent, and capable of transmitting actinic rays, but capable of chemical development to a state of either complete opacity or of limited transmissibility wherein only nonactinic light rays are transmitted thereby.
  • the lines 3, as shown in Fig. l, extend at right angles to the lines 2.
  • These patterns may be printed by means of a printing ink which is prepared in the following manner.
  • the base sheet is permitted to dry and is then run through a bath consisting of ethyl alcohol and 15% formalin, which serves to coagulate the glue and insolubly fixed the patterns in situ.
  • the sheet as thus prepared constitutes the drawing medium of my invention, and as such, is extremely useful in preparing mechanical and engineering drawings from which photo-print reproductions are to be made with the original drawing serving as a photographic transparency.
  • the ink or pencil drawing will be executed on one surface of the medium, and after it is completed, those areas of the surface or drawing which require a line shading will be developed, as indicated by the area A in Fig. 2, that is to say, the mercurous chloride lines forming the pattern 2 will be made opaque to actinic rays.
  • This development may be effected by application to the mercurous chloride pattern of an aqueous solution or 3% thiourea,
  • the pattern 2 will nrst be developed in such area, and the sheet then turned over and the pattern 3 developed, in such area, the patterns thus developed conjointly forming the cross-hatching shown within the area B in Fig. 3.
  • the development of the pattern 3 will be facilitated by virtue of the fact that the sheet is transparent or translucent, so that the drawing and the previously developed pattern 2 can be easily seen through the sheet.
  • 'I'he drawing or sheet may now be used as a photographic transparency in which the ink or pencil drawing and the developed portions of the pattern or patterns are opaque to actinic rays and the base sheet or sheet material and undeveloped portions of the pattern or patterns will transmit actinie rays.
  • Such transparencies may be used for making reproductions on all ordinary types of photo-copying material, such as blue prints, black and white prints, Ozalid prints, Van Dyke prints, bichromate-gelatin and silver emulsions of the ordinary and orthochromatic types.
  • the invention has been described with reference to patterns consisting of closely spaced parallel lines, with the pattern on one surface of the sheet being geometrically related to that on the other surface thereof, it is to be understood that the patterns may be entirely individual and not related in any way.
  • the pattern on one surface may consist of parallel lines, such as the pattern 2, while on the other surface, the pattern may consist of spaced dots, such as shown in Fig. 4 of the drawings, which may be developed, as indicated in the area C in Fig. 5.
  • An insoluble copper compound developed with a soluble sulfide solution or a solution of a soluble salt of dialkyl dithiocarbamic acid such as sodium diethyl dithiocarbamate.
  • the insoluble compound should be precipitated on a colloidal base, such as glue, casein, albumin, or the like, in order to obtain the extremely ne state of division necessary for the transmission of light rays through the printed patterns.
  • a colloidal base such as glue, casein, albumin, or the like.
  • Any developable material used in forming the patterns must very largely transmit actinic rays in its undeveloped condition and transmit very few actinic rays in its developed condition.
  • I may take a base sheet which is substantially transparent or translucent, such as that described, and, instead of applying patterns to both surfaces thereof, as described, may apply two separate patterns to the same side of the sheet, as described in my Reissue Patent No. 20,503.
  • the patterns will be geometrically or otherwise related, and one of the patterns will be developable by a developer solution capable of developing said pattern only and both of the patterns being developable by a developer solution capable of developing both of said patterns collectively.
  • One of the patterns is applied to the surface of the transparent or translucent base sheet by means of a transparent or translucent mercurous chloride printing ink such as hereinbefore described, and capable of being developed by means of an aqueous solution of 3% thiourea.
  • the other pattern which is also preferably transparent or translucent, is printed by means of a printing ink which is prepared in the following manner.
  • Both patterns i. e., the mercurous chloride and lead sulphate patterns, will then be collectively developable by means of sodium sulphide.
  • a photographic transparency prepared in accordance with the invention consisting of a transparent base sheet 4 having on one surface thereof a mechanically or manually executed drawing 5 of the outline of a vase, shaded by shading or cross-hatch ing, similar to that shown in Fig. 3, and formed by successive development of line patterns on opposite sides of the sheet, as previously eX- plained.
  • a medium for use in preparing photographic transparencies comprising a transparent or translucent base sheet having a chemically-developable pattern on each of its surfaces.
  • a medium for use in preparing photographic transparencies comprising a transparent or translucent base sheet having chemically-developable line patterns on each of its surfaces.
  • a medium for use in preparing photographic transparencies comprising a transparent or translucent base sheet having a chemically-developable pattern on one of its surfaces, and a chemica1ly-developable pattern on the other surface thereof, said second pattern being geometrically related to the first pattern.
  • a medium for use in preparing photographic transparencies comprising a transparent or translucent base sheet having a chemically-developable line pattern on one 0f its surfaces, and a dot pattern on the other surface thereof,
  • the method of preparing a medium of the character described which comprises providing a transparent or translucent base sheet, and applying to each of the surfaces of said sheet a chemically-developable pattern.
  • the method of preparing a photographic transparency which comprises providing a transparent or translucent base sheet having a chemically-developable pattern on each of its surfaces, making a drawing on one of said surfaces, and developing portions of the patterns on each of said surfaces as an accompaniment for said drawing.
  • a photographic transparency consisting of a transparent or translucent base sheet having a mechanically produced drawing on one of its surfaces, and a chemically-developed pattern on the other surface thereof.
  • a photographic transparency consisting of a transparent or translucent base sheet having a mechanically-produced drawing on one of its surfaces, and chemically-developed patterns on both of its surfaces.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
US509269A 1943-11-06 1943-11-06 Drawing medium and method of making the same Expired - Lifetime US2425068A (en)

Priority Applications (2)

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US245068D USB245068I5 (enrdf_load_html_response) 1943-11-06
US509269A US2425068A (en) 1943-11-06 1943-11-06 Drawing medium and method of making the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US509269A US2425068A (en) 1943-11-06 1943-11-06 Drawing medium and method of making the same

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US2425068A true US2425068A (en) 1947-08-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506153A (en) * 1947-06-17 1950-05-02 North American Paper Process C Opacification of paper
US3561337A (en) * 1966-08-15 1971-02-09 Kalvar Corp Sheet material for manufacture of transparencies

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE20503E (en) * 1935-02-11 1937-09-14 Method of producing drawings or other compositions
US2224270A (en) * 1938-03-15 1940-12-10 Louis S Sanders Method of preparing camera copy for multicolor printing
US2240945A (en) * 1938-03-16 1941-05-06 Swayaland William Method and article for producing shaded designs
US2301900A (en) * 1940-05-20 1942-11-10 Louis S Sanders Medium for use in making camera copy and method of preparing the same
US2392414A (en) * 1943-09-17 1946-01-08 Louis S Sanders Medium for use in preparing transparent prints

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE20503E (en) * 1935-02-11 1937-09-14 Method of producing drawings or other compositions
US2224270A (en) * 1938-03-15 1940-12-10 Louis S Sanders Method of preparing camera copy for multicolor printing
US2240945A (en) * 1938-03-16 1941-05-06 Swayaland William Method and article for producing shaded designs
US2301900A (en) * 1940-05-20 1942-11-10 Louis S Sanders Medium for use in making camera copy and method of preparing the same
US2392414A (en) * 1943-09-17 1946-01-08 Louis S Sanders Medium for use in preparing transparent prints

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506153A (en) * 1947-06-17 1950-05-02 North American Paper Process C Opacification of paper
US3561337A (en) * 1966-08-15 1971-02-09 Kalvar Corp Sheet material for manufacture of transparencies

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Publication number Publication date
USB245068I5 (enrdf_load_html_response) 1900-01-01

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