US3649810A - Hot screen printing machine - Google Patents

Hot screen printing machine Download PDF

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Publication number
US3649810A
US3649810A US62115A US3649810DA US3649810A US 3649810 A US3649810 A US 3649810A US 62115 A US62115 A US 62115A US 3649810D A US3649810D A US 3649810DA US 3649810 A US3649810 A US 3649810A
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US
United States
Prior art keywords
screen printing
drum
printing machine
electrodes
flexible sheet
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
US62115A
Other languages
English (en)
Inventor
Masayoshi Tsuboi
Tsuneo Komura
Sigeru Tezuka
Asaji Kondo
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Application granted granted Critical
Publication of US3649810A publication Critical patent/US3649810A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/12—Stencil printing; Silk-screen printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L13/00—Stencilling apparatus for office or other commercial use
    • B41L13/04—Stencilling apparatus for office or other commercial use with curved or rotary stencil carriers
    • B41L13/06—Stencilling apparatus for office or other commercial use with curved or rotary stencil carriers with a single cylinder carrying the stencil

Definitions

  • a practical and useful hot screen printing machine having at 51 ..l'l05b 1/00 least one rotatable cylindrical printing drum comprising a flex- 19/216, 244, 469471. ible plane heater on the outer surface thereof and an electrical insulating layer surrounding the plane heater.
  • the present invention relates to .a hot screen printing machine. More particularly, the present invention is concerned with a hot screen printing :machine comprising a flexible plane heater on the printing drum.
  • the heating of the printing drum inpresently known hot screen printing processes has-been generally conducted indirectly by means .of an electric'heater such as nicrome wire, infrared rays, hot air .or steam.
  • the hot screen printing machine of .the present invention comprises at least one rotatable cylindrical printing drum provided with aneleetric insulating layer surrounding a plane heater having electrodes on the outersurface of the printing drum thereof.
  • An object of the present invention isto provide :an improvement in a screen printing .macln'ne.
  • Another object of the present invention is to provide a practical and useful hot screen printing machine as mentionedhereinafter and illustrated in the drawings.
  • Another object of the present invention is to propose a practical screen printing processsuitable to obtain printed matter with a very clearimage in .an easy operation by using the improved hot screen printing machine.
  • FIG. 1 is a perspective view, partly in section, of a portion of the printing drum of the hot screenprinting machine of the present invention
  • FIG. 2 is another perspective view of a portion of the hot screen printing machine of the present invention.
  • FIGS. 3 and 4 are respectively temperature versus voltage and time graphs for the heater of the present invention.
  • FIG. 1 illustrates a printing drum l for use inthe single drum type screen printing machine of the present invention.
  • the drum 1 comprises a plane heater 3 on the outer surface thereof, and an insulating layer2 disposed inwardly of the heater 3.
  • electrodes 44 and 4b are disposed on the surface of the plane heater 3.
  • Lead wires sa and 512 connected to the electrodes 4a and 4b respectively, are contacted with circular electrodes 8 and 9, respectively, which are positioned at the side of the printing drum 1 and separated by an annular insulating layer 7.
  • the circular electrodes 8 and 9 are connected with a source of electricity (not shown-)by current collectors I and 11.
  • the prevention of an electric shock may be easily effected by providing an insulating layer 12 on the surface of the plane heater 3.
  • the electrodes 4a and 4b may be positioned along one end of the circumference of the printing drum 1.
  • the other parts in the hot screen printing machine according to the present invention are similar to the hitherto known screen printing machine; namely, a hand-operated lever or an automatic rotating apparatus (not shown) is provided for rotating the drum shaft 6, and a pressure roller 13 is in engagement with the printing drum 3.
  • the :plane heater 3 may be formed, for example, of a moldedplastic material of any suitable type.
  • a film-forming polymer may be mixed with an electrically conductive material, or such a polymer may be applied uniformly with an electrically conductive material onto a suitable base, such as glass cloth, the polymer preferably being of the heat-resistant type.
  • a cloth made up of an electrically conductive fiber may be used.
  • the electrically conductive material for the plane heater 3 may be selected from the group consisting of carbon black or grafted carbon, aluminum powder, silver powder and copper power, used singularly or in combination.
  • a plane heater having a thickness of 20 microns to 2 mm. is preferable so that it is sufficiently flexible to be easily wound around the printing drum 1.
  • the insulating layer 2 may be selected from the groups consisting of polyethylene terephthalate film, cellulose triacetate film, felt or sponge.
  • the temperature of the ink layer used in the hot screen printing machine of the present invention should be below the limit of heat resistance temperature of the screen stencil and it is usuallyat a temperature less than about 90 C. Since the surface temperature of the plane heater 3 does not have to be more than 20 C. higher than the temperature of the ink layer, the heater 3 may generally be maintained at a temperature less than about 1 10 C.
  • the plane heater 3 may be charged with either a direct current or an alternating current, but usually an alternating current is preferable.
  • a pair or more of the electrodes 4a and 4b parallel to the shaft 6 of said printing drum 1, or a pair or more of the electrodes along the circumference of the drum, may be equipped and charged with a sufficient voltage such that said plane heater 3 is maintained at the desired temperature.
  • FIG. 3 The relation of the charged voltage with the temperature in case where the plane heater 3, having 170 microns thickness, prepared by adding 20 percent by weight of carbon black to cellulose triacetate, is charged through electrodes (25 cm. distance) is illustrated in FIG. 3.
  • FIG. 4 The relation between the temperature and the time in case of charging the electrodes with v. is illustrated in FIG. 4. As is understood from FIGS. 3 and 4, it requires only about seconds for reaching 80 percent of the thermal variation from room temperature 26 to 60 C., namely, 53.2 C., and the thermal fluctuation on the surface of said plane heater 3 is within 3 C.
  • the application of the plane heater 3 to the hot screen printing machine is markedly advantageous in view of the simplicityof the attachment of the heater to the printing drum, owing to its flexibility in addition to the possibility of rapid elevation of temperature with maintaining a uniform thermal distribution.
  • the printing machine of the present invention makes it possible to use an ink which is at a solid state at ordinary temperatures, due to the possibility of printing at a temperature higher than an ordinary temperature, thereby conducting the printing operation with less staining of hands, etc., during the operation.
  • an ink for screen printing is directly applied from a tube or a can to the insulating film l2 overlying the plane heater, and the printing operation can be run at a constant temperature elevated from ordinary temperatures.
  • ink sheet is intended to cover one prepared by applying an ink on a sheet of a support inactive to the ink or a support that is not permeated by the ink at a temperature range imparting the fluidity. If an ink, which is solid at ordinary temperatures, but fluid only when heated to a temperature higher than an ordinary temperature, is used for the screen printing machine of the present invention, there is no fear of staining hands and clothes with the ink, other than when actually printing.
  • the solid ink can be easily heated to a temperature imparting the desirable fluidity within 1 to 3 minutes, and thereby the screen printing can be efi'ectively conducted in a conventional screen printing stencil.
  • a polyester film having microns thickness was wound around an aluminum printing drum having 4.5 cm. in radius to insulate the drum, and a cellulose triacetate film (170 microns thickness) containing percent by weight of carbon black content as the plane heater was layed on the polyester film layer, and further a polyester film having 100 microns thickness as an insulator was wound around the heater.
  • Aluminum foil having 0.5 cm. in width was adhered in the direction parallel to a shaft of the printing drum to both ends cm. distance) of the plane heater by using an electrically conductive paste to make electrodes respectively, and lead wires and brush type current collectors were connected to the electrodes.
  • An ink sheet which was prepared by applying to a cellophane sheet X 40cm.) so as to leave 4 cm. of the circumference free, 15 g. of ink made up mainly of 90 parts of paraffin, 3 parts of cellulose flock and 7 parts of carbon black, and was at a solid state at an ordinary temperature under 60 C., was set on the printing drum of the hot screen printing machine and, after laying a mimeographic stencil paper cut with a typewriter on the ink sheet, the printing was started while beginning to impart fluidity to the ink.
  • EXAMPLE 2 The plane heater used was prepared by applying an 80 percent concentration dispersion of grafted carbon (produced by Nippon Gas Chemical Industries, Ltd.) containing 50 percent by weight of carbon black onto a glass cloth and drying it.
  • the hot screen printing machine was made up as in example 1.
  • the glass cloth served as an insulating layer for the aluminum drum, the polystyrene film having 15 microns in thickness was not required.
  • the ink supplying source there was used an ink'sheet prepared by applying a colorless ink containing a dye base to a support, and then the hot screen printing was conducted using clay paper, applied with an acid clay, as the printing paper.
  • dye base used herein is intended to cover a leuco pigment, a lactone derivative of pigment, a lactam derivative of pigment and the like.
  • the colorless ink was prepared by mixing l.5 g. of crystal violet lactone, 15 g. of diphenyl tetrachloride, 20 g. of triphenyl chlorinate and 30 g. of paraffin having a melting point of 62 C. under heating.
  • a hot screen printing machine comprising at least one rotatable cylindrical drum
  • a flexible sheet of electrically conductive material wrapped around the drum and capable of generating heat comprising a heat resisting polymer film containing a material selected from the group consisting of carbon black, grafted carbon, aluminum powder, silver powder, and
  • PP. l J an electrically insulating layer on the outside surface of the drum 7 and above the sheet of electrically conductive material and formed of a material selected from the group consisting of polyethylene terephthalate film, cellulose triacetate film, felt and sponge, and
  • means for supplying electricity to the heat generating flexible sheet including a pair of electrodes positioned parallel to the drum and extending across the surface of the flexible sheet beneath the insulating layer.
  • a hot screen printing machine as in claim 1, where the means for supplying electricity further includes lead wires and brush type current collector means connected to the electrodes and positioned at one end of the drum radially inward of the electrodes.

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  • Printing Methods (AREA)
US62115A 1969-08-11 1970-08-07 Hot screen printing machine Expired - Lifetime US3649810A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44063389A JPS4832694B1 (ko) 1969-08-11 1969-08-11

Publications (1)

Publication Number Publication Date
US3649810A true US3649810A (en) 1972-03-14

Family

ID=13227880

Family Applications (1)

Application Number Title Priority Date Filing Date
US62115A Expired - Lifetime US3649810A (en) 1969-08-11 1970-08-07 Hot screen printing machine

Country Status (6)

Country Link
US (1) US3649810A (ko)
JP (1) JPS4832694B1 (ko)
CA (1) CA937451A (ko)
DE (1) DE2039729A1 (ko)
FR (1) FR2056708A5 (ko)
GB (1) GB1325048A (ko)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4395109A (en) * 1979-06-11 1983-07-26 Tokyo Shibaura Denki Kabushiki Kaisha Fixing device for electronic duplicator machine
US4724305A (en) * 1986-03-07 1988-02-09 Hitachi Metals, Ltd. Directly-heating roller for fuse-fixing toner images
US4776070A (en) * 1986-03-12 1988-10-11 Hitachi Metals, Ltd. Directly-heating roller for fixing toner images
US4883941A (en) * 1986-08-06 1989-11-28 Xerox Corporation Filament wound foil fusing system
US5081340A (en) * 1990-02-06 1992-01-14 Technologies Development Incorporated Heating elements for plastic film laminators
US5087946A (en) * 1990-06-04 1992-02-11 The United States Of America As Represented By Director, National Security Agency Composite instant on fuser element
US5235163A (en) * 1992-07-17 1993-08-10 Levitan David M Resistive contact for resin-based heating elements
US5315356A (en) * 1991-03-16 1994-05-24 Kabushiki Kaisha Toshiba Fixing apparatus
US6191395B1 (en) * 1998-09-22 2001-02-20 Jamco Corporation Heating roller
US20050005787A1 (en) * 2001-09-13 2005-01-13 Roos Robert Nikolaus Hot stamping cylinder

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59155051U (ja) * 1983-04-01 1984-10-18 サンデン株式会社 ミル付コ−ヒ−自動販売機
US4627345A (en) * 1984-02-21 1986-12-09 Lockwood Technical, Inc. Rotary screen printing apparatus
JP3292535B2 (ja) * 1993-03-01 2002-06-17 理想科学工業株式会社 孔版印刷装置および版胴

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679572A (en) * 1952-01-12 1954-05-25 Goodyear Tire & Rubber Resilient roll
US3310655A (en) * 1966-02-23 1967-03-21 Armstrong Cork Co Calender roll having controllably heated surface
US3401439A (en) * 1965-05-19 1968-09-17 Gen Binding Corp Laminating apparatus
US3469077A (en) * 1963-09-03 1969-09-23 Minnesota Mining & Mfg Heating device
US3471683A (en) * 1967-04-25 1969-10-07 Rogers Corp Heater roll
US3520747A (en) * 1965-10-29 1970-07-14 Mccreary Tire & Rubber Co Method of making structural members of layers of corrosion resistant coatings and fibrous material

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679572A (en) * 1952-01-12 1954-05-25 Goodyear Tire & Rubber Resilient roll
US3469077A (en) * 1963-09-03 1969-09-23 Minnesota Mining & Mfg Heating device
US3401439A (en) * 1965-05-19 1968-09-17 Gen Binding Corp Laminating apparatus
US3520747A (en) * 1965-10-29 1970-07-14 Mccreary Tire & Rubber Co Method of making structural members of layers of corrosion resistant coatings and fibrous material
US3520747B1 (ko) * 1965-10-29 1988-12-13
US3310655A (en) * 1966-02-23 1967-03-21 Armstrong Cork Co Calender roll having controllably heated surface
US3471683A (en) * 1967-04-25 1969-10-07 Rogers Corp Heater roll

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4395109A (en) * 1979-06-11 1983-07-26 Tokyo Shibaura Denki Kabushiki Kaisha Fixing device for electronic duplicator machine
US4724305A (en) * 1986-03-07 1988-02-09 Hitachi Metals, Ltd. Directly-heating roller for fuse-fixing toner images
US4776070A (en) * 1986-03-12 1988-10-11 Hitachi Metals, Ltd. Directly-heating roller for fixing toner images
US4883941A (en) * 1986-08-06 1989-11-28 Xerox Corporation Filament wound foil fusing system
US5081340A (en) * 1990-02-06 1992-01-14 Technologies Development Incorporated Heating elements for plastic film laminators
US5087946A (en) * 1990-06-04 1992-02-11 The United States Of America As Represented By Director, National Security Agency Composite instant on fuser element
US5315356A (en) * 1991-03-16 1994-05-24 Kabushiki Kaisha Toshiba Fixing apparatus
US5235163A (en) * 1992-07-17 1993-08-10 Levitan David M Resistive contact for resin-based heating elements
US6191395B1 (en) * 1998-09-22 2001-02-20 Jamco Corporation Heating roller
US20050005787A1 (en) * 2001-09-13 2005-01-13 Roos Robert Nikolaus Hot stamping cylinder
US7063011B2 (en) * 2001-09-13 2006-06-20 Gallus Ferd. Ruesch Ag Hot stamping cylinder

Also Published As

Publication number Publication date
FR2056708A5 (ko) 1971-05-14
JPS4832694B1 (ko) 1973-10-08
CA937451A (en) 1973-11-27
DE2039729A1 (de) 1972-04-06
GB1325048A (en) 1973-08-01

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