US3302565A - Thermographic methods and products - Google Patents

Thermographic methods and products Download PDF

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Publication number
US3302565A
US3302565A US309924A US30992463A US3302565A US 3302565 A US3302565 A US 3302565A US 309924 A US309924 A US 309924A US 30992463 A US30992463 A US 30992463A US 3302565 A US3302565 A US 3302565A
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US
United States
Prior art keywords
sheet
images
original
infrared radiation
heat
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
US309924A
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English (en)
Inventor
Douglas A Newman
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.)
Columbia Ribbon and Carbon Manufacturing Co Inc
International Business Machines Corp
Original Assignee
Columbia Ribbon and Carbon Manufacturing Co Inc
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 US309924D priority Critical patent/USB309924I5/en
Application filed by Columbia Ribbon and Carbon Manufacturing Co Inc filed Critical Columbia Ribbon and Carbon Manufacturing Co Inc
Priority to US309924A priority patent/US3302565A/en
Priority to DE19641471661 priority patent/DE1471661A1/de
Application granted granted Critical
Publication of US3302565A publication Critical patent/US3302565A/en
Assigned to INTERNATIONAL BUSINESS MACHINES CORPORATION reassignment INTERNATIONAL BUSINESS MACHINES CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: GREENE, IRA S., TRUSTEE OF COLUMBIA RIBBON AND CARBON MANUFACTURING CO. INC.
Assigned to GREENE, IRA S. reassignment GREENE, IRA S. COURT APPOINTMENT (SEE DOCUMENT FOR DETAILS). Assignors: COLUMBIA RIBBON AND CARBON MANUFACTURING CO INC
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
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/382—Contact thermal transfer or sublimation processes
    • B41M5/38207—Contact thermal transfer or sublimation processes characterised by aspects not provided for in groups B41M5/385 - B41M5/395
    • 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
    • Y10S430/165—Thermal imaging composition

Definitions

  • This invention relates to a new and improved method for applying images to a copy or master sheet such as a planographic printing plate by means of an imaged original sheet and infrared radiation, and to the novel master sheets for use in such process.
  • the planographic printing process is possibly the most popular process in use today for the reproduction of numerous copies of original subject matter.
  • the original subject matter is inscribed in the form of images of oleophilic composition on the hydrophilic surface of a planographic printing plate.
  • the plate is then mounted on a printing machine and moistened with oleophilic printing ink which is attracted by the oleophillic images on the hydrophilic printing surface of the plate and repelled by the Aremainder of the hydrophilic plate surface.
  • the oleophilic ink, in the form of the images is then transferred indirectly to a series of copy lsheets so that one thousand or more duplicate copies of the original subject -matter may be formed from the single plate.
  • the oleophilic images may be applied ⁇ directly to a planographic printing plate by means of an imaged original sheet, an oleophilic transfer Sheet and infrared radiation,
  • a process as taught for instance by U.S. Patent No. 2,808,777, has met with some success but also involves certain limitations which require that the planographic plate be very translucent or that the sheet bearing the original images be very translucent and have images on only one side thereof. This is so because of the fact that the superposition of the original sheet, transfer sheet and plate requires that the infrared radiation must be nnimpeded from being absorbed by the original images Which it is desired to duplicate, and the radiation must not 'be absorbed by any other materials which lie between the original sheet and the plate.
  • a conventional planographic printing plate may be imaged in the known thermographic process but only in such cases where the original sheet i-s translucent and carries images on only one side thereof. This is so because conventional plates are ibased upon relatively opaque heavy paper stock having good wet strength properties and do not transmit infrared radiation to any real extent. Most of the radiation appears to be reflected or dissipated by the plate surface and only small amounts of the radiation are absorbed by the plate and/or transmitted thereby depending upon the relative thickness and opacity of the particular plate used. Therefore the use of a conventional plate in the thermographic process Mice is limited to its use on the bottom of the pile of superposed sheets furthest from the radiation source, so that the original ⁇ sheet must be of a limited nature as indicated.
  • thermographic process for imaging planographic printing plates, using any type of imaged original sheet and using any type of copy sheet.
  • thermographic process for imaging opaque planographic printing plates using relatively opaque original sheets o1' original sheets having images on both sides thereof.
  • FIGURE l is a diagrammatic cross-section, to an enlarged scale, of a donor sheet, a transfer sheet and an imaged original sheet superposed under the effects of infrared radiation according to the first step of the present method.
  • FIG. 2 - is a diagrammatic cross-section, to an enlarged scale, of the donor sheet imaged according to FIG. 1
  • FIG. 3 is a diagrammatic cross-section, to an enlarged scale, of the planographic printing plate imaged according to FIG. 2.
  • thermographic process which allows for the formation of images on an opaque planographic printing plate, corresponding to images on any type of original sheet, such as an opaque or two-sided original sheet, by thermographic means.
  • the present process is composed of two separate and distinct steps, the first step comprising the formation of images on a donor sheet directly from an imaged original sheet, a transfer sheet and infrared radiation, and the second step comprising the heat transfer of said images from said donor sheet to the planographic printing plate.
  • an imaged original sheet 30 which is opaque and/ or has front infrared radiation-absorbing images 31 and back infrared radiationabsorbing images 32 thereon is superposed with a transfer sheet 20 and a donor sheet 10 so that the original sheet is at the bottom of the pile furthermost from the radiation source S0.
  • the transfer sheet 20 and transfer layer 21 thereon must be free of materials which absorb infrared radiation to any substantial degree so as to permit the radiation to pass through to the original.
  • the transfer sheet must be based upon a translucent foundation such as tissue paper or a clear plastic film such as Mylar or the like.
  • the transfer layer used according to the present invention is one based upon heat-tackiiiable, heat-meltable wax composition including, if desired, small amounts of resinous additives such ⁇ as VistaneX or lndopol which are isobutylene resins.
  • the preferred Wax binders include the relatively soft waxes such as parafiin WaX and beeswax.
  • the transfer layer consists of oleophilic Wax composition substantially free of pigments or dyes except for the presence of a tint color for proofreading purposes.
  • the donor sheet 10 must also be translucent and free of materials which absorb infrared radiation to any substantial degree.
  • the donor sheet surface must have good receptivity for the heat-transferable composition of layer 21 and yet must freely release said composition to the v copy sheet or plate when heated in the second stepV of of imaging composition to soften and adhere to the treated surface of the donor sheet;
  • planographic printing plate is one which has a layer of infrared radiation-absorbing material on the surface opposite to the printing surface.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Printing Methods (AREA)
US309924A 1963-09-19 1963-09-19 Thermographic methods and products Expired - Lifetime US3302565A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US309924D USB309924I5 (enrdf_load_stackoverflow) 1963-09-19
US309924A US3302565A (en) 1963-09-19 1963-09-19 Thermographic methods and products
DE19641471661 DE1471661A1 (de) 1963-09-19 1964-09-16 Verfahren zur Beschriftung von Kopier- oder Matrizenboegen sowie die dazu verwendeten Matrizenboegen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US309924A US3302565A (en) 1963-09-19 1963-09-19 Thermographic methods and products

Publications (1)

Publication Number Publication Date
US3302565A true US3302565A (en) 1967-02-07

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US309924D Pending USB309924I5 (enrdf_load_stackoverflow) 1963-09-19
US309924A Expired - Lifetime US3302565A (en) 1963-09-19 1963-09-19 Thermographic methods and products

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US309924D Pending USB309924I5 (enrdf_load_stackoverflow) 1963-09-19

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US (2) US3302565A (enrdf_load_stackoverflow)
DE (1) DE1471661A1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3554125A (en) * 1967-04-26 1971-01-12 Xerox Corp Method of making a lithographic master and method of printing therewith
US3632365A (en) * 1967-07-13 1972-01-04 Owens Illinois Inc Decorative decal with a pyrolyzable film base

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0573092A1 (en) * 1992-06-05 1993-12-08 Agfa-Gevaert N.V. A method for obtaining an image using a heat mode recording material

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007829A (en) * 1959-02-09 1961-11-07 Meyercord Co Vitreous decalcomania
US3089953A (en) * 1959-04-15 1963-05-14 Kalle Ag Reproduction process
US3122998A (en) * 1960-06-02 1964-03-03 Infrared transfer process
US3148617A (en) * 1962-10-25 1964-09-15 Dick Co Ab Copy process
US3151549A (en) * 1959-02-11 1964-10-06 Warren S D Co Electrically inscribable lithographic masters

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007829A (en) * 1959-02-09 1961-11-07 Meyercord Co Vitreous decalcomania
US3151549A (en) * 1959-02-11 1964-10-06 Warren S D Co Electrically inscribable lithographic masters
US3089953A (en) * 1959-04-15 1963-05-14 Kalle Ag Reproduction process
US3122998A (en) * 1960-06-02 1964-03-03 Infrared transfer process
US3148617A (en) * 1962-10-25 1964-09-15 Dick Co Ab Copy process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3554125A (en) * 1967-04-26 1971-01-12 Xerox Corp Method of making a lithographic master and method of printing therewith
US3632365A (en) * 1967-07-13 1972-01-04 Owens Illinois Inc Decorative decal with a pyrolyzable film base

Also Published As

Publication number Publication date
USB309924I5 (enrdf_load_stackoverflow)
DE1471661A1 (de) 1968-12-12

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Legal Events

Date Code Title Description
AS Assignment

Owner name: INTERNATIONAL BUSINESS MACHINES CORPORATION (IBM C

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GREENE, IRA S., TRUSTEE OF COLUMBIA RIBBON AND CARBON MANUFACTURING CO. INC.;REEL/FRAME:003933/0208

Effective date: 19811102

AS Assignment

Owner name: GREENE, IRA S 275 MADISON AVE.NEW YORK,N.Y.10016

Free format text: COURT APPOINTMENT;ASSIGNOR:COLUMBIA RIBBON AND CARBON MANUFACTURING CO INC;REEL/FRAME:004035/0217

Effective date: 19820629