EP0278091B1 - Mehrfach überschreibbares Thermofarbband - Google Patents

Mehrfach überschreibbares Thermofarbband Download PDF

Info

Publication number
EP0278091B1
EP0278091B1 EP19870118528 EP87118528A EP0278091B1 EP 0278091 B1 EP0278091 B1 EP 0278091B1 EP 19870118528 EP19870118528 EP 19870118528 EP 87118528 A EP87118528 A EP 87118528A EP 0278091 B1 EP0278091 B1 EP 0278091B1
Authority
EP
European Patent Office
Prior art keywords
thermal
ink ribbon
ink
thermal ink
fuse
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
EP19870118528
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0278091A1 (de
Inventor
Norbert Dr. Mecke
Heinrich Krauter
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.)
Pelikan Produktions AG
Original Assignee
Pelikan GmbH
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 Pelikan GmbH filed Critical Pelikan GmbH
Priority to AT87118528T priority Critical patent/ATE57500T1/de
Publication of EP0278091A1 publication Critical patent/EP0278091A1/de
Application granted granted Critical
Publication of EP0278091B1 publication Critical patent/EP0278091B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B41M5/392—Additives, other than colour forming substances, dyes or pigments, e.g. sensitisers, transfer promoting agents
    • B41M5/395—Macromolecular additives, e.g. binders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J31/00—Ink ribbons; Renovating or testing ink ribbons
    • B41J31/05—Ink ribbons having coatings other than impression-material coatings
    • 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
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture
    • 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
    • Y10S428/914—Transfer or decalcomania
    • 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]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31935—Ester, halide or nitrile of addition polymer

Definitions

  • the invention relates to a rewritable thermal ribbon, in particular a rewritable thermal carbon ribbon, with a conventional carrier and with a layer of a melting ink formed on one side of the carrier.
  • Thermal ribbons have been known for a long time. They have a melting color on a foil-like carrier, which can consist of paper, a plastic and the like, in particular in the form of a plastic and / or wax-bound dye or soot layer. In this transfer material, the melting ink is melted by means of a thermal print head and transferred to a recording paper or a printing paper.
  • Thermal printers or thermal print heads that are used for this process are e.g. B. from DE-ASen 2 062 494 and 2 406 613 and DE-OS 3 224 445 known. In particular, z. Example, proceed as follows: On the thermal print head of the printer, a letter consisting of heated dots and to be printed on a paper sheet is formed.
  • the thermal print head presses the thermal ribbon onto the paper to be written on.
  • the heated letter of the thermal print head at a temperature of about 400 ° C leads to the melting ink being melted at the heated point and being transferred to the paper sheet.
  • the used part of the thermal ribbon is fed to a spool.
  • the thermal ribbon can have differently colored melting colors next to each other. With the combination of the three primary colors blue, yellow and red, colored print images can be produced. Compared to the usual color photography, there is no disadvantageous development and fixing. Thermal printers can be operated at high writing speeds (a DIN A4 sheet can be printed in about 10 seconds) and without annoying background noises.
  • thermal ribbons described above there are also those in which the heat symbol is not generated by a thermal print head, but by resistance heating of a specially designed film-like carrier.
  • the melting color which is the actual "functional layer” during the printing process, also contains the materials already described above. Experts refer to this as an "ETR” thermal ribbon ("Electro Thermal Ribbon”).
  • ETR Electro Thermal Ribbon
  • Thermal ribbons are already known which can be overwritten several times (key word: "Multiuse”). Such thermal ribbons are described for example in EP-A-0 063 000.
  • the melting ink of the thermal ink ribbon is a particulate material which is insoluble in the solvent of the coating liquid and does not melt below 100 ° C, and incorporates another particulate material with a melting point between 40 and 100 ° C.
  • the particulate material not melting below 100 ° C should preferably be a metal oxide, a metal, an organic resin or carbon black.
  • This special particulate material is intended to give the layer of the melting ink, which is a solid mixture, a heterogeneous structure; which only consumes a small amount of molten colored material to be transferred in each individual printing operation.
  • thermal ink ribbons of this type it has been shown that the printouts are in need of improvement, particularly with regard to the print sharpness.
  • the thermal ink ribbon known from DE-OS 35 20 308 with a sponge-like structure of the melting ink provides the greatest possible remedy. It is produced by a special process, according to which a coating liquid which dissolves a thermoplastic binder and contains a meltable wax or a wax-like substance in finely divided solid form is applied to the support of the thermal ink ribbon in a manner known per se, the coating liquid being Solvent is a mixture of a solvent for the thermoplastic binder at room temperature and a non-solvent therefor. The non-solvent / solvent mixture is evaporated, while reducing its solvency for the thermoplastic binder.
  • the melting ink cannot be fully used when overwritten several times. It is therefore desirable to develop the known thermal ribbons so that this objective is met.
  • the invention is therefore based on the object of proposing a rewritable thermal ink ribbon, in particular a rewritable thermal carbon ribbon, which, in addition to the desirable sharpness of the printout, makes it possible to use the melting ink as completely as possible.
  • the essence of the invention therefore consists in the choice of a special binder as a meltable substance in the melting ink.
  • This binder shows extensive parallels to the waxes that were conventionally used to form the melting ink.
  • the decisive difference can be seen in the fact that, in contrast to the melting ink according to the invention, multiple overprinting with the desirable print sharpness is not possible with the customary wax-based melting colors, since a complete color transfer regularly takes place during the printing process.
  • the binder chosen according to the invention therefore behaves quite differently.
  • the shown preferred structure of the copolymer contained in the melting ink of the thermal ink ribbon according to the invention is an ethylene-vinyl acetate copolymer, in which, as with all other further developments which fall within the scope of the invention, the ratio m / n between 0, 01 and 0.07 is in particular between 0.025 and 0.035.
  • the binders selected according to the invention are preferably an ethylene wax which has been slightly modified by copolymerizing vinyl acetate.
  • the binder described above and contained in the melting ink of the thermal ink ribbon according to the invention is the main component.
  • a colorant preferably in an amount of about 10 to 40% by weight, is incorporated into this main component.
  • the type of colorant is not critical to the solution of the problem described above. It can be both inorganic and organic colorants, each in natural and synthetic form.
  • the inorganic colorants are pigments, such as carbon black, and may also have a filler character.
  • the dyes include colorants which are soluble in solvents and / or binders. Examples include:
  • Triphenylmethane dyes Viktoria Blue B (C.I. Basic Blue), Ink Blue (C.I. Acid Blue 93) and Water Blue T.B.A. (CI Acid Blue 22), azo dyes such as Sudan Deep Black BB (CI Solvent Black 2) and Sudan Brown 1 (CI Solvent Brown 1), metal complex dyes such as Neozapon Black RE (CI Solvent Black 27) and Neozapon Blue FLE (CI Solvent Blue 70) and spirit-soluble dyes such as Spirit Blue (CI Solvent Blue 3) and Spirit Soluble Fast Black (CI Solvent Blue 70).
  • azo dyes such as Sudan Deep Black BB (CI Solvent Black 2) and Sudan Brown 1 (CI Solvent Brown 1)
  • metal complex dyes such as Neozapon Black RE (CI Solvent Black 27) and Neozapon Blue FLE (CI Solvent Blue 70)
  • spirit-soluble dyes such as Spirit Blue (CI Solvent Blue 3) and Spirit Soluble Fast Black (CI Solvent Blue 70).
  • the minimum constituents which are contained in the melting ink of the thermal ink ribbon according to the invention are accordingly the special binder mentioned and the colorant.
  • the binder preferably makes up about 60 to 90% by weight of the melting ink.
  • the thickness of the layer of the melting ink is not essential for the objective according to the invention. However, the coarser the desired number of overrides, the greater it will be. In practical applications, the thickness of the melt ink layer will be approximately 5 to 20, in particular approximately 8 to 12, micrometers.
  • polyesters used in the prior art in particular polyethylene terephthalates, polycarbonates, polyamides, polyvinyl compounds, in particular polyvinyl chloride, polyvinyl acetate, polyvinyl alcohol and polyvinyl propionate, polyethylene, polypropylene and polystyrene.
  • These films can also contain a plasticizer to improve flexibility.
  • the plastic carrier contains a conductive material in the finest dispersion, e.g. B. carbon black.
  • the carrier film is preferably about 10 to 15 micrometers thick, while this thickness is preferably about 3 to 6 micrometers when using a thermal print head. Of course, these areas can also be exceeded or fallen short of.
  • the production of the thermal ink ribbon according to the invention is advantageously carried out as follows: the binder of the melting ink used according to the invention is dissolved in a suitable aromatic solvent, such as toluene, in an approximately 15 to 25% by weight concentration. To this end, the colorant is preferably added in such an amount that it makes up about 10 to 40% by weight, based on dry matter.
  • the dispersion obtained is applied in a thickness of approximately 50 micrometers using customary application techniques. The order quantity would be about 50 g / m2 of carrier area. For example, a doctor blade can be used for the application. The job can be done at room temperature. The coated carrier is then passed through a drying tunnel in which the solvent is evaporated.
  • Particularly suitable fatty acids are kyristic, palmitic, stearic and oleic acid.
  • Suitable derivatives thereof are, for example, fatty acid esters and fatty acid amides, in particular fatty acid esters of polyhydric alcohols, such as glycol and glycerin.
  • the amount of this dispersing aid in the applied solution or dispersion is preferably about 1 to 5% by weight, based on the dry matter.
  • the advantages that can be achieved with the invention can be outlined as follows:
  • the thermal ink ribbon according to the invention can be produced without difficulty. Its coloring capacity is fully used. Residual color does not remain with the last multiple overwriting. There is no framework substance that disturbs the sharpness of the font. Accordingly, when practicing the present invention, a variety of desirable advantages appear which have not been achieved in their entirety in the known thermal ribbons.
  • a modified polyethylene wax based on an ethylene-vinyl acetate copolymer with a vinyl acetate content of about 10% by weight was mixed with carbon black and toluene. 70 parts by weight of the polyethylene wax, 30 parts by weight of carbon black and 400 parts by weight of toluene were used. After briefly stirring, the modified polyethylene wax had gone into solution. It was applied in an amount of 50 g / m 2 to a polyester film with a thickness of about 6 micrometers by means of a doctor blade.
  • Coated supports were then passed through a conventional drying tunnel in order to evaporate the solvent in the form of the toluene at a temperature of approximately 80 ° .
  • the ink ribbon obtained could easily be overwritten 20 times with a sharp printout.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Fuses (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Adhesive Tapes (AREA)
  • Organic Insulating Materials (AREA)
EP19870118528 1987-02-07 1987-12-15 Mehrfach überschreibbares Thermofarbband Expired - Lifetime EP0278091B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87118528T ATE57500T1 (de) 1987-02-07 1987-12-15 Mehrfach ueberschreibbares thermofarbband.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3703813 1987-02-07
DE19873703813 DE3703813A1 (de) 1987-02-07 1987-02-07 Mehrfach ueberschreibbares thermofarbband

Publications (2)

Publication Number Publication Date
EP0278091A1 EP0278091A1 (de) 1988-08-17
EP0278091B1 true EP0278091B1 (de) 1990-10-17

Family

ID=6320497

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870118528 Expired - Lifetime EP0278091B1 (de) 1987-02-07 1987-12-15 Mehrfach überschreibbares Thermofarbband

Country Status (7)

Country Link
US (1) US5017428A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0278091B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPH07112751B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) ATE57500T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE3703813A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES2017994B3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GR (1) GR3000945T3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2513830B2 (ja) * 1989-03-20 1996-07-03 富士通株式会社 熱転写インクシ―ト
US6469779B2 (en) * 1997-02-07 2002-10-22 Arcturus Engineering, Inc. Laser capture microdissection method and apparatus
US6495195B2 (en) * 1997-02-14 2002-12-17 Arcturus Engineering, Inc. Broadband absorbing film for laser capture microdissection
US7075640B2 (en) * 1997-10-01 2006-07-11 Arcturus Bioscience, Inc. Consumable for laser capture microdissection
US6528248B2 (en) 1999-04-29 2003-03-04 Arcturus Engineering, Inc. Processing technology for LCM samples
US6690470B1 (en) 1999-11-04 2004-02-10 Arcturus Engineering, Inc. Automated laser capture microdissection
US10156501B2 (en) 2001-11-05 2018-12-18 Life Technologies Corporation Automated microdissection instrument for determining a location of a laser beam projection on a worksurface area
US8722357B2 (en) * 2001-11-05 2014-05-13 Life Technologies Corporation Automated microdissection instrument
US8715955B2 (en) 2004-09-09 2014-05-06 Life Technologies Corporation Laser microdissection apparatus and method
CN1311984C (zh) * 2004-04-16 2007-04-25 焦作市卓立烫印材料有限公司 一种烫字碳箔
US7829162B2 (en) 2006-08-29 2010-11-09 international imagining materials, inc Thermal transfer ribbon
US20080057233A1 (en) * 2006-08-29 2008-03-06 Harrison Daniel J Conductive thermal transfer ribbon
CN100567013C (zh) * 2007-06-08 2009-12-09 焦作市卓立烫印材料有限公司 塑料管材标识带

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DE2062494C3 (de) * 1970-12-18 1975-04-30 Triumph Werke Nuernberg Ag, 8500 Nuernberg Wärmedruckkopf
JPS5130804B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-08-12 1976-09-03
JPS49106731A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-02-12 1974-10-09
JPS51115104A (en) * 1975-04-01 1976-10-09 Toyo Soda Mfg Co Ltd Heat transfer unit
US4347282A (en) * 1979-04-27 1982-08-31 Frye Copysystems, Inc. Chemical carbonless copy paper and transfer medium therefor
US4309117A (en) * 1979-12-26 1982-01-05 International Business Machines Corporation Ribbon configuration for resistive ribbon thermal transfer printing
JPS585280A (ja) * 1981-07-03 1983-01-12 Canon Inc 画像記録方法
JPS60120093A (ja) * 1983-12-02 1985-06-27 Konishiroku Photo Ind Co Ltd 感熱転写記録媒体
JPS61169286A (ja) * 1985-01-24 1986-07-30 Seiko Epson Corp 熱転写用インク原料組成物
JPH06435B2 (ja) * 1984-10-01 1994-01-05 大日本印刷株式会社 熱転写用インキ
JPS61114890A (ja) * 1984-11-09 1986-06-02 Konishiroku Photo Ind Co Ltd 感熱転写記録媒体
JPS61206697A (ja) * 1985-03-12 1986-09-12 Dainippon Printing Co Ltd 消去用感熱転写シ−ト
DE3685351D1 (de) * 1985-03-12 1992-06-25 Gen Co Ltd Waermeempfindliches uebertragungsaufzeichnungsmaterial.
DE3522801C1 (de) * 1985-06-26 1986-10-23 Pelikan Ag, 3000 Hannover Thermofarbband sowie ein Verfahren zu dessen Herstellung
JPS6221595A (ja) * 1985-07-23 1987-01-29 Tdk Corp 感熱記録用転写媒体
JPS6227188A (ja) * 1985-07-29 1987-02-05 Tdk Corp 感熱記録用転写媒体
JPS6228289A (ja) * 1985-07-30 1987-02-06 Tdk Corp 感熱記録用転写媒体
EP0477996B1 (en) * 1985-08-12 1997-05-02 General Company Limited Heat sensitive transferring recording medium

Also Published As

Publication number Publication date
JPS63194984A (ja) 1988-08-12
GR3000945T3 (en) 1991-12-10
EP0278091A1 (de) 1988-08-17
ATE57500T1 (de) 1990-11-15
ES2017994B3 (es) 1991-03-16
JPH07112751B2 (ja) 1995-12-06
DE3765634D1 (de) 1990-11-22
DE3703813A1 (de) 1988-08-18
DE3703813C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1988-12-08
US5017428A (en) 1991-05-21

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