US1591369A - Photomechanical printing surface and process - Google Patents

Photomechanical printing surface and process Download PDF

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Publication number
US1591369A
US1591369A US20251A US2025125A US1591369A US 1591369 A US1591369 A US 1591369A US 20251 A US20251 A US 20251A US 2025125 A US2025125 A US 2025125A US 1591369 A US1591369 A US 1591369A
Authority
US
United States
Prior art keywords
coating
solution
printing
acid
plate
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
US20251A
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English (en)
Inventor
Nagy Desire 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
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1591369A publication Critical patent/US1591369A/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
    • G03F7/004—Photosensitive materials
    • G03F7/04—Chromates
    • 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
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/908—Impression retention layer, e.g. print matrix, sound record
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
    • Y10T428/31685—Natural source polyamide [e.g., casein, gelatin, 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31725—Of polyamide
    • Y10T428/31768—Natural source-type polyamide [e.g., casein, gelatin, 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31826—Of natural rubber

Definitions

  • he principal object of the invention is to remedy the defects above described and to make photo-mechanical off-set printing a success, so that it may be possible to print satisfactorily without half-tone blocks, electros and stereos.
  • the object of this invention is achieved by the present improvements which are the result of research, in-. vestigation and experiment in connection with the problem above stated. Others have failed to achieve this object for the reason that they have not paid attention or have paid insufiicient'attention, to the chemical, physical or electro-chemical action above described. It was well-known in practice that aluminium sheets had the drawback that the metal became bare. when in use on the off-set machine, the lines or dots appearing to become brittle and breaking away so that the shadows opened up unduly.
  • lactic casein, legumin, gluten or fibrin obtained as a highly purified precipitate which is dissolved in a suitable acid or acid solution, the product being a hyaline gelatinous neutral solution which is made use of in the production of printing surfaces, as hereinafter explained.
  • the chemical physical and electro-chemical actions of the rubber sheet are prevented by a coating of a thin solution of prepared casein, legumin, gluten or fibrin with an addition of ingredients or reagents the said coating resulting in a stratum which is leather-like and permeable to liquids.
  • the said solution is employed also in the preparation of the plates, as will appear from the following practical examples.
  • the first example is that of the preparation of a printing plate by coating a sufliciently grained sheet of copper, zinc, aluminium, celluloid or other suitable material.
  • lactic casein, legumin, gluten or fibrin is treated and purified of fat and albumen and finally recipitated by oxyglutaric acid (C H,(OHO).
  • C H,(OHO) oxyglutaric acid
  • Any one of these pure precipitates is then dissolved at a low temperature in aaminoglutaric acid OO,H.GH NIL) CH,CH,GO,H)
  • the fine etching can then be carried out as in the half tone process and to such a depth as is comparable with that of the ordinary relief process block.
  • the etched plate is now cleaned and gummed up on the margins and other nonprinting parts, and rolled up with ink and the gum washed off, and the plate is ready for use.
  • the second example is that of the coating of plate of polished copper, zinc, or aluminium.
  • the coating is performed with the solution described in the first example and the etching is performed in the same manner.
  • the plate After cleaning, the plate is grained on the margin and non-printing parts. The margin and non-printing parts are now gummed up, and the whole plate is rolled up with suitable ink, leaving the plate ready for use on press or machine.
  • the plates roduced according to the foregoing examp es are suitable-for three colour work in the off-set process and are adapted for giving great depth of colour and sharp definition in printing.
  • the third examp e is that of coating a rubber off-set sheet.
  • the casein or like solution, prepared as described in the first example is mixed in the proportion of 5 to 1 with a 20% solution of liquefied gluten or serecin, a 10% solution of formaldehyde being added in the proportion of 1 to 10,-and propenyl alcohol being added in the proportion of 1 to 50.
  • the stratum rinting object is fixed,
  • a surface coating for use in off-set printing said coating being obtained by the application to the surface of a hyalinegelatinous neutral solution of a protein.
  • a surface coating for use in off-set printing said coating eing obtained by the application to the surface of a hyaline gelatinous neutral solution of a protein, the latter being employed in the form of a highly pure preci itate which is dissolved in the presence 0 an acid.
  • a surface coating for use in off-set printing said coating being obtained by the application to the surface of a hyaline gelatinous neutral solution of a protein, the latter being employed in the form of a highl pure roduct obtained by precipitation wit oxy utaric acid which productis dissolved in t e presence of an acid.
  • a surface coating for use in ofi-set printing said coating being obtained by the app ication to the surface of a hyaline elatinous neutral solution of a rotein, the atter being employed in the orm of a highly pure pro not obtained by precipitation which product is dissolved at a low temperature in a-aminoglutaric acid and dilute ammonia.
  • a surface coating for use in off-set printing said coating being obtained by the application to the surface of a mixture of a 20% solution of serecin and a hyaline gelatinous neutral solution of a protein, the latter being employed in the form of a highly pure product obtained by precipitation which product is dissolved in the presence of an acid.
  • a surface coating for use in off-set printing said coating being obtained by the resulting from this coating is leatherlike' application to the surface of a mixture of a of an acid.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Peptides Or Proteins (AREA)
  • Printing Plates And Materials Therefor (AREA)
US20251A 1924-04-04 1925-04-02 Photomechanical printing surface and process Expired - Lifetime US1591369A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8561/24A GB236621A (en) 1924-04-04 1924-04-04 Improvements in or relating to photo-mechanical printing surfaces and processes

Publications (1)

Publication Number Publication Date
US1591369A true US1591369A (en) 1926-07-06

Family

ID=9854827

Family Applications (1)

Application Number Title Priority Date Filing Date
US20251A Expired - Lifetime US1591369A (en) 1924-04-04 1925-04-02 Photomechanical printing surface and process

Country Status (3)

Country Link
US (1) US1591369A (fr)
FR (1) FR596238A (fr)
GB (1) GB236621A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532866A (en) * 1944-10-21 1950-12-05 Toland William Craig Method and plate for lithographic printing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532866A (en) * 1944-10-21 1950-12-05 Toland William Craig Method and plate for lithographic printing

Also Published As

Publication number Publication date
GB236621A (en) 1925-07-06
FR596238A (fr) 1925-10-19

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