US2808344A - Method for seamless coating of printing forms - Google Patents

Method for seamless coating of printing forms Download PDF

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Publication number
US2808344A
US2808344A US433246A US43324654A US2808344A US 2808344 A US2808344 A US 2808344A US 433246 A US433246 A US 433246A US 43324654 A US43324654 A US 43324654A US 2808344 A US2808344 A US 2808344A
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United States
Prior art keywords
solution
container
printing
printing form
level
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Expired - Lifetime
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US433246A
Inventor
Kaulen Robert
Walter W Krohe
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KAULEN
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KAULEN
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Priority to US534229A priority Critical patent/US2808022A/en
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Publication of US2808344A publication Critical patent/US2808344A/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
    • 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
    • G03F7/16—Coating processes; Apparatus therefor
    • G03F7/18—Coating curved surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
    • B05C3/09—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating separate articles
    • B05C3/109—Passing liquids or other fluent materials into or through chambers containing stationary articles
    • 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
    • Y10S430/136—Coating process making radiation sensitive element

Definitions

  • This invention relates to a method of and a device for seamless coating of printing forms, especially of printing cylinders or copper cylinders, with a photo-colloidsolution which is a layer sensitive to light.
  • the present invention has for its object a method and a device which provides a completely uniform coating in a simple and reliable manner.
  • the method according vto the invention is essentially characterized in that the colloid solution in the container receiving the printing form is kept at a constant level and that the printing form is drawn up within the container in its longitudinal direction and is subjected at the free end thereof to the influence of heat.
  • the colloid solution is discharged from the container at the height of the solution level during drawing up the printing form from the container.
  • the layer applied to the printing form is progressively dried upon leaving the colloid solution.
  • the method according to the present invention offers the advantage that a completely even layer of uniform thickness is obtained. Troubles and damages by the formation of bubbles are prevented. The method assures a secure and clean operation.
  • the device for carrying out the method according to the invention is preferably formed in such a manner that the container is provided with a piston-like bottom which is moved simultaneously with the printing form drawn up from within the container.
  • the container is provided with an overflow for keeping constant the level of the colloid solution,
  • the printing form is guided on the one hand by the bottom of the container which is moved simultaneously with the printing form and on the other hand by an upper support.
  • the printing form may be drawn up from the container with adjustable speed. The variation of the speed influences the thickness of the applied layer.
  • the supply of the colloid solution is suitably efi'ected through the movable bottom 2,808,344 Patented Oct. 1, 1957 so that the colloid solution may rise into the container.
  • the container 1 which receives the colloid solution and the printing form to be coated preferably the printing cylinder, is advantageously formed as a tube. It may be provided with a jacket 2 to keep the colloid solution within the tube 1 at a fixed temperature.
  • the printing cylinder 3 is mounted in such a manner in the container l'that it is movable in a longitudinal direciton.
  • the bottom 4 of the container is movable in tube 1 and it is suitably formed as a piston which closely seals tube 1 by means of the packing ring 5.
  • the container 1 is provided with an overflow 6 which is formed as an annular channel with a continuous slot or with single openings.
  • T he axle 3a of printing cylinder 3 is fixed thereto and is journaled in guide bearing 7.
  • the bearing is formed in such a manner that it may be moved in the direction of the longitudinal axis of the printing cylinder by means of a mechanical or an electrical drive.
  • a heating device is suitably provided by means of which the applied colloid layer may be dried.
  • the colloid solution is suitably supplied to the container 1 through bottom 4.
  • the excess of the solution is taken by a storage container 10 from overflow pipe 6 into which is inserted a filtering device 13.
  • Supply pipe 9 opens into storage container 10 which is suitably arranged laterally from container 1.
  • the colloid solution is introduced from storage container 10 from below into container 1, for instance, by means of compressed air which is supplied to the closed storage container by means of pipe 11.
  • the excess of the colloid solution returns into container 10 through overflow pipe 6.
  • valve 12 of supply pipe 9 is closed.
  • cylinder 3 is drawn up slowly from tube 1, for instance, by means of a gear, the piston-like bottom 4 being moved simultaneously therewith.
  • Pipe 9 may be interrupted beneath valve 12 or may consist of a sufficiently long flexible tube.
  • the displaced colloid solution is discharged through overflow pipe 6. The speed of the upward movement depends on the desired thickness of the layer.
  • the heating device 8, preferably an electrical heating device, provides for rapid drying of the appliedlayer immediately upon the same leaving the colloid solution.
  • a method for seamless coating of printing forms, particularly printing cylinders with a colloid solution which comprises the following successive steps; mounting a printing form in an emptycontainer, supplying a colloid solution intothe container from below the printing form to a level in the container above the printing form, raising the printing form from within the container and causing the lower level of the solution to move therewith while discharging the solution at the upper level thereof and maintaining the upper level thereof constant and the solution substantially static between said upper and lower levels, and subjecting the printing form to the influence of heat upon leaving the solution.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Drying Of Solid Materials (AREA)
  • Printing Plates And Materials Therefor (AREA)

Description

Oct. 1, 1957 R. KAULEN ET AL 2,508,344
METHOD FORSEAMLESS COATING OF PRINTING FORMS Filed May 28, 1954 lNl/ENTORC W Krohe AP R. Kclulerp By a ATTYS.
United States Patent This invention relates to a method of and a device for seamless coating of printing forms, especially of printing cylinders or copper cylinders, with a photo-colloidsolution which is a layer sensitive to light.
Several methods are already known for providing copper cylinders with a seamless layer of photo-colloid. For instance, the layer has been applied upon a cylinder disposed within a horizontal centrifugal machine and rotat ing about its own axis. Further, it has heretofore been attempted to form the layer upon the cylinder rotating in a lathe by applying the overflowing colloid by means of a slide rest'or the like. There is also known the use of a ring through which the cylinder is drawn. With the hitherto known methods a uniform thickness of the layer cannot be obtained. Besides, the result of the coating process depends largely on the ability of the operating person and a reliable operation cannot be assured. In printing cylinders which have to be used for endless printing of long sheets as, for instance, sheets of paper, it is necessary especially in multicolor printing that the layer is always even and uniform as otherwise displacements of the patterns in endless printing result.
The present invention has for its object a method and a device which provides a completely uniform coating in a simple and reliable manner. The method according vto the invention is essentially characterized in that the colloid solution in the container receiving the printing form is kept at a constant level and that the printing form is drawn up within the container in its longitudinal direction and is subjected at the free end thereof to the influence of heat. Preferably, the colloid solution is discharged from the container at the height of the solution level during drawing up the printing form from the container. Suitably, the layer applied to the printing form is progressively dried upon leaving the colloid solution. Further, it is of importance that wetting of the printing form by the colloid solution is eflected in such a manner that the solution introduced into the container receiving the printing form is rising from the bottom of the container. The method according to the present invention offers the advantage that a completely even layer of uniform thickness is obtained. Troubles and damages by the formation of bubbles are prevented. The method assures a secure and clean operation.
The device for carrying out the method according to the invention is preferably formed in such a manner that the container is provided with a piston-like bottom which is moved simultaneously with the printing form drawn up from within the container. The container is provided with an overflow for keeping constant the level of the colloid solution, The printing form is guided on the one hand by the bottom of the container which is moved simultaneously with the printing form and on the other hand by an upper support. Preferably, the printing form may be drawn up from the container with adjustable speed. The variation of the speed influences the thickness of the applied layer. The supply of the colloid solution is suitably efi'ected through the movable bottom 2,808,344 Patented Oct. 1, 1957 so that the colloid solution may rise into the container. Filling of the container with the solution is eflected in this manner by a laminar current. The formation of bubbles is thereby; prevented. Such a device assures a ice reliablea-nd uniform result of the operation. Cleansing of the device is very simple.
The figure on theQdrawi-ng illustrates by way of example one embodiment of the device according to the invention. I
The container 1 which receives the colloid solution and the printing form to be coated, preferably the printing cylinder, is advantageously formed as a tube. It may be provided with a jacket 2 to keep the colloid solution within the tube 1 at a fixed temperature. The printing cylinder 3 is mounted in such a manner in the container l'that it is movable in a longitudinal direciton. The bottom 4 of the container is movable in tube 1 and it is suitably formed as a piston which closely seals tube 1 by means of the packing ring 5. For keeping constant the level of the colloid solution, the container 1 is provided with an overflow 6 which is formed as an annular channel with a continuous slot or with single openings.
T he axle 3a of printing cylinder 3 is fixed thereto and is journaled in guide bearing 7. The bearing is formed in such a manner that it may be moved in the direction of the longitudinal axis of the printing cylinder by means of a mechanical or an electrical drive. In the extension of the axis of container 1 a heating device is suitably provided by means of which the applied colloid layer may be dried.
The colloid solution is suitably supplied to the container 1 through bottom 4. The excess of the solution is taken by a storage container 10 from overflow pipe 6 into which is inserted a filtering device 13. Supply pipe 9 opens into storage container 10 which is suitably arranged laterally from container 1.
The coating process according to the invention is effected as follows:
After insertion of the printing cylinder 3 into container 1, the colloid solution is introduced from storage container 10 from below into container 1, for instance, by means of compressed air which is supplied to the closed storage container by means of pipe 11. The excess of the colloid solution returns into container 10 through overflow pipe 6. Now valve 12 of supply pipe 9 is closed. After that, cylinder 3 is drawn up slowly from tube 1, for instance, by means of a gear, the piston-like bottom 4 being moved simultaneously therewith. Pipe 9 may be interrupted beneath valve 12 or may consist of a sufficiently long flexible tube. The displaced colloid solution is discharged through overflow pipe 6. The speed of the upward movement depends on the desired thickness of the layer. The heating device 8, preferably an electrical heating device, provides for rapid drying of the appliedlayer immediately upon the same leaving the colloid solution.
Whatis claimed as new, is:
1. A method for seamless coating of printing forms, particularly printing cylinders with a colloid solution which comprises the following successive steps; mounting a printing form in an emptycontainer, supplying a colloid solution intothe container from below the printing form to a level in the container above the printing form, raising the printing form from within the container and causing the lower level of the solution to move therewith while discharging the solution at the upper level thereof and maintaining the upper level thereof constant and the solution substantially static between said upper and lower levels, and subjecting the printing form to the influence of heat upon leaving the solution.
2. The method of claim 1 wherein said influence 0f solution whichcomprises mounting the elongated form vertically Within a surrounding and closely conforming but spaced zone, introducing the colloidal solution into said zone, then raising simultaneously the form and the bottom of the zone, retaining the upper level of the colloidal solution constant during the raising of the form solely by overflow of said colloidal solution, and harden ing the film on the form by heating as the form emerges from the solution.
UNITED STATES PATENTS Hubbell May 23, Powell Jan. 1, McCullough Oct. 22, Linder May 2, Beaune June 9, Green Nov. 3, Lippincott Sept. 12, Kooh Aug. 25, Spencer Jan. 20,

Claims (1)

1.A METHOD FOR SEAMLESS COATING OF PRINTING FORMS, PARTICULARLY PRINTING CYLINDERS WITH A COLLOID SOLUTION WHICH COMPRISES THE FOLLOWING SUCCCESSIVE STEPS; MOUNTING A PRINTING FORM IN AN EMPTY CONTAINER, SUPPLYING A COLLOID SOLUTION INTO THE CONTAINERFROM BELOW THE PRINTING FORM TO A LEVEL IN THE CONTAINER ABOVE THE PRINTING FORM, RASING THE PRINTING FORM FROM WITHIN THE CONTAINER AND CAUSING THE LOWER LEVEL OF THE SOLUTION TO MOVE THEREWITH WHILE DISCHARGING THE SOLUTION AT THE UPPER LEVEL THEREOF AND MAINTAINING THE UPER LEVEL THEREOF CONSTANT AND THE SOLUTION SUBSTANTIALLY STATIC BETWEEN SAID UPPER AND LOWER LEVELS, AND SUBJECTING THE PRINTING FORM TO THE INFLUENCE OF HEAT UPON LEAVING THE SOLUTION.
US433246A 1953-06-01 1954-05-28 Method for seamless coating of printing forms Expired - Lifetime US2808344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US534229A US2808022A (en) 1954-05-28 1955-08-22 Device for seamless coating of printing forms, especially of printing cylinders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE325491X 1953-06-01

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US2808344A true US2808344A (en) 1957-10-01

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CH (1) CH325491A (en)
FR (1) FR1101509A (en)
GB (1) GB787328A (en)
NL (1) NL187797B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046156A (en) * 1958-09-17 1962-07-24 Bekk & Kaulen Chem Fab Gmbh Process and apparatus for the seamless coating of printing elements, such as plates and cylinders
US3117028A (en) * 1959-12-10 1964-01-07 Bekk & Kaulen Chem Fab Gmbh Apparatus for coating printing forms for photogravure and the like
US3620813A (en) * 1968-11-12 1971-11-16 Udylite Corp Method of treating workpieces in a treating fluid
US4328267A (en) * 1975-04-25 1982-05-04 Canon Kabushiki Kaisha Process for producing a coating of uniform thickness of an element
US4338879A (en) * 1978-03-30 1982-07-13 Makeev Anatoly E Apparatus for applying enamel slip to pipe
US4680246A (en) * 1982-06-29 1987-07-14 Mitsubishi Chemical Industries Limited Method for producing an electrophotographic element
US5278027A (en) * 1989-03-08 1994-01-11 R. R. Donnelley Method and apparatus for making print imaging media
US20040212129A1 (en) * 2002-11-06 2004-10-28 Nexpress Solutions Llc Process and installation for the manufacturing of a coating for an impression cylinder
US20100068404A1 (en) * 2008-09-18 2010-03-18 Guardian Industries Corp. Draw-off coating apparatus for making coating articles, and/or methods of making coated articles using the same
US11679409B2 (en) * 2019-12-17 2023-06-20 Covalon Technologies Inc. Reactors for coating devices and related systems and methods

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US47826A (en) * 1865-05-23 Improved apparatus for japanning
US1697436A (en) * 1923-09-07 1929-01-01 Frederick N Windridge Article-dipping apparatus
US1733082A (en) * 1925-05-14 1929-10-22 Frederick S Mccullough Method of and apparatus for coating cathodes
US1906981A (en) * 1929-12-02 1933-05-02 Sam L Bingham S Son Mfg Co Process of and apparatus for coating printers' rollers
US2043604A (en) * 1929-05-23 1936-06-09 Procedes Serge Beaune Soc D Method of preparing wiping rollers for printing
US2059339A (en) * 1934-06-26 1936-11-03 Maas & Waldstein Co Dipping machine
US2172394A (en) * 1934-11-12 1939-09-12 Ideal Roller & Mfg Company Surfacing of inking rolls
US2293747A (en) * 1939-07-13 1942-08-25 Abbott Coburn Apparatus for coating the edges of strips
US2626222A (en) * 1948-09-01 1953-01-20 Spencer James Method for manufacturing printing rollers

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US47826A (en) * 1865-05-23 Improved apparatus for japanning
US1697436A (en) * 1923-09-07 1929-01-01 Frederick N Windridge Article-dipping apparatus
US1733082A (en) * 1925-05-14 1929-10-22 Frederick S Mccullough Method of and apparatus for coating cathodes
US2043604A (en) * 1929-05-23 1936-06-09 Procedes Serge Beaune Soc D Method of preparing wiping rollers for printing
US1906981A (en) * 1929-12-02 1933-05-02 Sam L Bingham S Son Mfg Co Process of and apparatus for coating printers' rollers
US2059339A (en) * 1934-06-26 1936-11-03 Maas & Waldstein Co Dipping machine
US2172394A (en) * 1934-11-12 1939-09-12 Ideal Roller & Mfg Company Surfacing of inking rolls
US2293747A (en) * 1939-07-13 1942-08-25 Abbott Coburn Apparatus for coating the edges of strips
US2626222A (en) * 1948-09-01 1953-01-20 Spencer James Method for manufacturing printing rollers

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046156A (en) * 1958-09-17 1962-07-24 Bekk & Kaulen Chem Fab Gmbh Process and apparatus for the seamless coating of printing elements, such as plates and cylinders
US3117028A (en) * 1959-12-10 1964-01-07 Bekk & Kaulen Chem Fab Gmbh Apparatus for coating printing forms for photogravure and the like
US3620813A (en) * 1968-11-12 1971-11-16 Udylite Corp Method of treating workpieces in a treating fluid
US4328267A (en) * 1975-04-25 1982-05-04 Canon Kabushiki Kaisha Process for producing a coating of uniform thickness of an element
US4338879A (en) * 1978-03-30 1982-07-13 Makeev Anatoly E Apparatus for applying enamel slip to pipe
US4680246A (en) * 1982-06-29 1987-07-14 Mitsubishi Chemical Industries Limited Method for producing an electrophotographic element
US5278027A (en) * 1989-03-08 1994-01-11 R. R. Donnelley Method and apparatus for making print imaging media
US20040212129A1 (en) * 2002-11-06 2004-10-28 Nexpress Solutions Llc Process and installation for the manufacturing of a coating for an impression cylinder
US7217113B2 (en) * 2002-11-06 2007-05-15 Eastman Kodak Company Process and installation for the manufacturing of a coating for an impression cylinder
US20100068404A1 (en) * 2008-09-18 2010-03-18 Guardian Industries Corp. Draw-off coating apparatus for making coating articles, and/or methods of making coated articles using the same
US11679409B2 (en) * 2019-12-17 2023-06-20 Covalon Technologies Inc. Reactors for coating devices and related systems and methods

Also Published As

Publication number Publication date
GB787328A (en) 1957-12-04
FR1101509A (en) 1955-10-07
NL187797B (en)
CH325491A (en) 1957-11-15

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