US3854976A - Applicator and method for making a printing form - Google Patents

Applicator and method for making a printing form Download PDF

Info

Publication number
US3854976A
US3854976A US00182983A US18298371A US3854976A US 3854976 A US3854976 A US 3854976A US 00182983 A US00182983 A US 00182983A US 18298371 A US18298371 A US 18298371A US 3854976 A US3854976 A US 3854976A
Authority
US
United States
Prior art keywords
outline
lacquer
printing
layer
microcapsules
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
US00182983A
Other languages
English (en)
Inventor
G Ritzerfeld
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 US3854976A publication Critical patent/US3854976A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1091—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by physical transfer from a donor sheet having an uniform coating of lithographic material using thermal means as provided by a thermal head or a laser; by mechanical pressure, e.g. from a typewriter by electrical recording ribbon therefor

Definitions

  • a carrier foil having a layer of microcapsules containing a printing lacquer consisting of a resin and a solvent.
  • the carrier foil is superimposed on a printing foil, and the microcapsules broken by the impact of a type or melted by radiation along a desired outline, the lacquer is applied to the printing foil along the desired outline, and adheres to the printing foil when the same is separated from the carrier foil and from the remainder of the layer.
  • the present invention relates to a method of making a printable image on a lithographic printing foil consisting of metal, preferably aluminum, paper, or a synthetic material, or consisting of several of the aboveenumerated substances, which may form different superimposed foils.
  • the method is carried out by using an applicator sheet, according to the invention, which includes a carrier foil, and a layer of microcapsules bonded to the carrier foil.
  • a printable image is formed on the printing foil of a fatty substance, or lacquer is applied to the printing foil by a pen or brush.
  • fatty substances forming an image for example of a character, are inferior to a lacquer in forming an adherent base, particularly it is not possible to add to the moistening water, anti-toner substances, since the same creep under the fatty base.
  • lacquers are used for making a printing foil, it is not possible to produce the desired outline by the types of a typewriter, or by applying infrared heat along the desired outline.
  • Another object of the invention is to provide a method permitting the use of a typewriter for forming an image consisting of lacquer on a printing foil.
  • Another object of the invention is to provide a method permitting the use of infrared light for forming an image consisting of a lacquer on a printing foil.
  • Another object of the invention is to provide a printing foil with a printable outline of an image having great adhesive capacity, permitting the use of moistening liquids, and having great tone stability during printing.
  • Another object of the invention is to make possible the required anti-toner stability for direct lithographic printing in which the printing face of the printing foil is dried by the paper which is being imprinted.
  • Another object of the invention is to make a printing foil particularly suited for printing operation in which the printing cylinder is frequently stopped after making a comparatively small number of copies, so that the printing form must be absolutely tone stable after one or two revolutions of the printing cylinder.
  • Another object of the invention is to provide an applicator sheet for carrying outthe method of the inventron.
  • Another object of the invention is an applicator sheet comprising a carrier foil, and a layer of microcapsules thereon, preferably containing a lacquer, and adapted to be opened along the outline of a desired image to be printed.
  • a method according to the invention of making a printing form uses a carrier foil having on the front face a layer of microcapsules containing a substance, such as a lacquer.
  • the carrier foil is superimposed on a printing foil so that the layer of capsules is in contact with the front face of the printing foil.
  • Energy is applied to the rear face of one of the foils along the outline of an image so as to open the microcapsules of the layer along the outline whereby the substance released by the opened microcapsules adheres to the front face of the printing foil along the outline.
  • the printing foil with the adhering substance and the carrier foil with the remaining portions of the layer are separated from each other so that the substance adhering to the printing foil forms a printable outline of the desired image.
  • the capsules contain a fast drying oleophilic lacquer consisting of a resin and a solvent.
  • Energy can be applied along the outline to be printed by the impact of a moving type on the respective foil so that microcapsules are broken along the character outline by the impacts of the type.
  • Energy can also be applied by heating the outline of the image and the remaining portions of the carrier foil differently, so that the capsules forming the image melt and open. After the evaporation of the solvent, the resin forms a very durable base to which the lithographic printing ink reliably adheres.
  • the method of the invention can be carried out with different printing foils, for example electrolytically roughened aluminum foils, or brushed aluminum foils.
  • a paper backing may be adhesively attached to the aluminum printing foil, and coated with a water-resistant lacquer. Barite paper, or other lithographic paper foils,
  • . may also be used as printing foils.
  • the lacquer is a mixture of a copolymerisate with a solvent, such as toluol and xylol.
  • EXAMPLE 1 22 parts by weight of a copolymerisate consisting of vinylchloride and vinylisobutylether in a ratio of :25 are mixed with 78 parts by weight of toluol.
  • EXAMPLE 2 21 parts by weight of a copolymerisate consisting of vinylchloride and vinylisobutylether in a ratio of 75:25 are mixed with 79 parts by weight of xylol.
  • the layer on the carrier foil of microcapsules having a diameter between 20 micron and 50 micron.
  • the layer is adhesively attached to the carrier sheet.
  • FIG. I is a schematic side view illustrating the use of a typewriter for making a mirror-reversed printable image on a printing form for direct lithographic printing;
  • FIG. 2 is a schematic side view illustrating the applicator sheet andthe printing foil of FIG. 1 after separation of the printing form from the applicator sheet;
  • FIGS. 3 and 4 are schematic side views corresponding to FIGS. 1 and 2, but illustrating the making of an offset printing foil with a true image
  • FIGS. and 6 are schematic side views illustrating a modified method using radiation for making a printing form.
  • a carrier foil 1 has a front face to which a layer 2 consisting of microcapsules is adhesively bonded.
  • a printing foil 3 is used.
  • the type bar 5 of a typewriter has a type 4 with a character whose outline is to be represented by the finished printing form.
  • an infrared lamp 8 is used together with a transparent sheet, to which heatabsorbent material 7 forming the outline-of the desired image is attached.
  • the layer 2 of capsules containing the lacquer is superimposed on the front face of a printing foil 3.
  • the type 4 is moved against the rear face of printing foil 3, and the impact of the type causes breaking of the microcapsules of layer 2 along the outline of the respective character.
  • the broken and opened microcapsules apply lacquer portions to the front face of the printing foil 3, forming with the same a printing form when printing foil 3 is separated from carrier foil I with the remainder of the layer 2.
  • the image 2a is a mirror-reversed image.
  • the type bar 5 with type 4 is placed at the rear face of the carrier 1 of the layer 2, and the impact along the outline of the character of type 4, breaks capsules along this outline, so that lacquer adheres at 2a to the printing foil 3, formingwith the same a printing form after separation of the carrier sheet I with the remainder oflayer 2 from the printing form 3,2 a.
  • a printing foil 3 is superimposed on the layer 2 which adheres to the carrier sheet 1.
  • a transparent sheet 6 with heat-absorbing material 7 arranged in accordance with the desired outline. is superimposed on the rear face of carrier foil 1.
  • Infrared light applied by lamp 8 passes through the transparent sheet, and is particularly absorbed by the heat-absorbing, image-forming material 7, so that microcapsules of layer 2 melt and open in'the pattern of the heat-absorbing material 7, so that lacquer adheres in the same pattern at 2a to the printing foil 3.
  • the printing form 3,2 a is separated from the carrier sheet I with the remainder of layer 2, the printing foil 3 carries a mirror-reversed image formed of the lacquer portions 20.
  • the heat-absorbent material 7 is applied to the rear face of the transparent sheet 6 which directly abuts It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of methods of making a printing form differing from the types described above.
  • the layer 2 has a thickness from about 20 to about 400 microns.
  • Typical monomers which may be polymerized in the form of capsules by the process described in the US. Pat. Nos. 2,800,457 and 2,800,458 to Greeniin include ethylacrylate, methylacrylate, methylmethacrylate, ethylmethacrylate, vinyl acetate, styrene and mixtures thereof.
  • the adhesive by which the layer 2 is bonded to the carrier foil 1 may comprise resinous acid, casein, a colloidal material, or a synthetic resin dispersion, or a combination of all or some of such substances.
  • a method of making a printing form comprising the steps of providing a printing sheet having a face on which a printable outline of an image is to be formed; providing a carrier sheet having a surface provided with a layer, said layer including microcapsules containing a fast drying oleophilic lacquer comprising a mixture of at least one resin and at least one liquid solvent which is to be transferred at least in part to said face to form said outline contacting said layer with said face; releasing said lacquer from at least some of said microcapsules by transmitting energy to regions of said layer corresponding to said outline so that the released lacquer contacts said face along said outlinelhereby enabling an adherent coating to be formed on said face along said outline; and separating said sheets; whereby a printing form having said outline is obtained.
  • said resin comprises a copolymer of vinylchloride and vinylisobutylether, said solvent being selected from the group consisting of toluol and xylol.
  • step of releasing said lacquer comprises breaking the micro- 6 capsules in said regions by transmitting impact energy thereto.
  • step of releasing said lacquer comprises opening the microcapsules in said regions by preferentially heating the same.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Methods (AREA)
  • Printing Plates And Materials Therefor (AREA)
US00182983A 1970-09-25 1971-09-23 Applicator and method for making a printing form Expired - Lifetime US3854976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702049019 DE2049019A1 (de) 1970-09-25 1970-09-25 Verfahren zur Bilderzeugung auf einer lithographischen Druckformfohe

Publications (1)

Publication Number Publication Date
US3854976A true US3854976A (en) 1974-12-17

Family

ID=5784327

Family Applications (1)

Application Number Title Priority Date Filing Date
US00182983A Expired - Lifetime US3854976A (en) 1970-09-25 1971-09-23 Applicator and method for making a printing form

Country Status (7)

Country Link
US (1) US3854976A (enrdf_load_stackoverflow)
CH (1) CH562100A5 (enrdf_load_stackoverflow)
DE (1) DE2049019A1 (enrdf_load_stackoverflow)
FR (1) FR2108292A5 (enrdf_load_stackoverflow)
GB (1) GB1323965A (enrdf_load_stackoverflow)
NL (1) NL7109832A (enrdf_load_stackoverflow)
SE (1) SE375265B (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5045430A (en) * 1985-10-25 1991-09-03 Shackle Dale R Method for making printing plates and assembly useful therein
JPS62250454A (ja) * 1986-04-23 1987-10-31 Fuji Photo Film Co Ltd 平版印刷版の製造法
JPH0668622B2 (ja) * 1986-04-23 1994-08-31 富士写真フイルム株式会社 平版印刷版の製造法
JPH0677147B2 (ja) * 1986-04-23 1994-09-28 富士写真フイルム株式会社 平版印刷原版
WO1994023954A1 (en) * 1993-04-20 1994-10-27 Asahi Kasei Kogyo Kabushiki Kaisha Lithographic printing original plate and method for producing the same
ITMI20120049A1 (it) * 2012-01-18 2013-07-19 Printgraph Waterless S P A Rivestimento avvolgibile per un cilindro porta-caucciu' o porta lastra di verniciatura per la finitura superficiale di un supporto stampato

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939009A (en) * 1956-02-01 1960-05-31 Jack M Tien Thermotransfer duplicating process
US3298895A (en) * 1962-12-17 1967-01-17 Du Pont Process for producing images and products thereof
US3317433A (en) * 1958-10-23 1967-05-02 Ncr Co Heat rupturable capsules
US3470059A (en) * 1965-12-22 1969-09-30 Minnesota Mining & Mfg Matrix for molding a positive relief impression
US3476937A (en) * 1963-12-05 1969-11-04 Agfa Gevaert Nv Thermographic recording method employing a recording material comprising a uniform layer of discrete hydrophobic thermoplastic polymer particles
US3484318A (en) * 1966-06-23 1969-12-16 Ibm Method of concurrently producing visible and magnetizable indicia
US3505955A (en) * 1966-01-17 1970-04-14 Gerhard Ritzerfeld Method and arrangement for producing printing forms
US3598581A (en) * 1967-04-03 1971-08-10 Xerox Corp Manifold imaging method
US3697323A (en) * 1971-01-06 1972-10-10 Ncr Co Pressure-sensitive record material
US3728210A (en) * 1969-06-27 1973-04-17 J Piron Dry transfer

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939009A (en) * 1956-02-01 1960-05-31 Jack M Tien Thermotransfer duplicating process
US3317433A (en) * 1958-10-23 1967-05-02 Ncr Co Heat rupturable capsules
US3298895A (en) * 1962-12-17 1967-01-17 Du Pont Process for producing images and products thereof
US3476937A (en) * 1963-12-05 1969-11-04 Agfa Gevaert Nv Thermographic recording method employing a recording material comprising a uniform layer of discrete hydrophobic thermoplastic polymer particles
US3470059A (en) * 1965-12-22 1969-09-30 Minnesota Mining & Mfg Matrix for molding a positive relief impression
US3505955A (en) * 1966-01-17 1970-04-14 Gerhard Ritzerfeld Method and arrangement for producing printing forms
US3484318A (en) * 1966-06-23 1969-12-16 Ibm Method of concurrently producing visible and magnetizable indicia
US3598581A (en) * 1967-04-03 1971-08-10 Xerox Corp Manifold imaging method
US3728210A (en) * 1969-06-27 1973-04-17 J Piron Dry transfer
US3697323A (en) * 1971-01-06 1972-10-10 Ncr Co Pressure-sensitive record material

Also Published As

Publication number Publication date
CH562100A5 (enrdf_load_stackoverflow) 1975-05-30
NL7109832A (enrdf_load_stackoverflow) 1972-03-28
DE2049019A1 (de) 1972-03-30
FR2108292A5 (enrdf_load_stackoverflow) 1972-05-19
SE375265B (enrdf_load_stackoverflow) 1975-04-14
GB1323965A (en) 1973-07-18

Similar Documents

Publication Publication Date Title
US2800077A (en) Planographic printing plates and methods for manufacturing same
US5022947A (en) Method for the preparation of a water-resistant printed material
US2810661A (en) Transfer sheet
US3589289A (en) Printing members and methods for graphic composition
JPS59222381A (ja) インクジエツト用記録媒体
US6083610A (en) Thermal transfer sheet
US3359900A (en) Copying process
US3751318A (en) Thermographic transfer process
US5417164A (en) Thermosensitive recording material and thermosensitive recording method
US4914079A (en) Thermal transfer ink medium and method of printing
US3854976A (en) Applicator and method for making a printing form
US3632376A (en) Heat-stencil assembly
US3922438A (en) Supercoated transfer elements and process for preparing and using same
US3919450A (en) Color developing high impact polystyrene sheet and method of developing color images inside the same
US3852091A (en) Thermographic transfer sheets
JPH0356919B2 (enrdf_load_stackoverflow)
JPH089272B2 (ja) 転写記録媒体および転写記録方法
US4299644A (en) Heat transfer decal
JP2649350B2 (ja) 転写記録媒体および転写記録方法
JPH01198388A (ja) 熱転写記録用受像シート
JPH0441918B2 (enrdf_load_stackoverflow)
US3736873A (en) Planographic printing plate assembly and method of making
US5047284A (en) Thermal transfer recording sheet
JPS62261486A (ja) 被熱転写シ−ト
JPH082117A (ja) 熱転写受像シートの製造方法