EP0126906A1 - Matériel pour l'enregistrement/transfert thermosensible - Google Patents

Matériel pour l'enregistrement/transfert thermosensible Download PDF

Info

Publication number
EP0126906A1
EP0126906A1 EP84103623A EP84103623A EP0126906A1 EP 0126906 A1 EP0126906 A1 EP 0126906A1 EP 84103623 A EP84103623 A EP 84103623A EP 84103623 A EP84103623 A EP 84103623A EP 0126906 A1 EP0126906 A1 EP 0126906A1
Authority
EP
European Patent Office
Prior art keywords
heat
wax
layer
sensitive recording
binder
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.)
Granted
Application number
EP84103623A
Other languages
German (de)
English (en)
Other versions
EP0126906B1 (fr
Inventor
Karl-Heinz Meyer
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.)
Renker & Co KG GmbH
Original Assignee
Renker & Co KG 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 Renker & Co KG GmbH filed Critical Renker & Co KG GmbH
Priority to AT84103623T priority Critical patent/ATE28060T1/de
Publication of EP0126906A1 publication Critical patent/EP0126906A1/fr
Application granted granted Critical
Publication of EP0126906B1 publication Critical patent/EP0126906B1/fr
Expired 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

Definitions

  • the invention relates to a heat-sensitive recording / transfer material with a back coating which can be transferred to normal paper by heat.
  • the invention is directed to the formation and composition of the hot melt transfer layer for materials which are used in so-called thermal printers which have a thermal head.
  • DE-A-2 202 630 describes an ink sheet for copying processes, in which original sheets bearing an image absorbing infrared radiation, an ink sheet and an ink sheet are placed one on top of the other. Then it is irradiated with infrared light so that the transfer of the color layer from the color sheet to the copy sheet takes place in accordance with the original image locations.
  • the discontinuous transfer layer consists of heat-softenable particles, which consist of a larger amount by weight of wax and a film-forming binder.
  • the softening point of the particles is in the range of about 66 - 104 ° C.
  • a heat-sensitive transfer material for thermal printers with a thermal head that has a thermal color development layer on the front of a suitable carrier material and a transferable hot-melt color layer on the back, which is locally generated when generating color patterns in the thermal color developer layer the heat acting on the front is melted and transferred to a conventional office paper arranged underneath.
  • the hot-melt paint layer contains a heat-conducting color pigment and as a binder a solid wax with a penetration at 25 ° C of 10-30 and a viscosity of 20-200 mPas at 100 ° C. Together with the solid wax, other hot-melt materials such as low molecular weight polyethylene, oxidized wax and ester waxes can be used as binders. According to the information in the publication, the viscosity of the ink layer must be in the range specified because the viscosity significantly influences the transferability of the hot-melt ink layer.
  • the known transfer material has the following disadvantages: If the thermal recording device is operated for a longer period of time, the transfer deteriorates considerably because the softening point of the wax layer is too low with the claimed penetration capacity. The color intensity of the copy is not sufficient for numerous purposes. When used in facsimile machines, the common passage of the transmission material and the recording duplicate sheet is often disturbed because the sheets move against one another because of the smooth surfaces.
  • the object of the present invention is to improve the properties of the transmission material described in DE-A-3 043 866.
  • the heat-sensitive recording / transfer material for thermal printers with a thermal head with a hot melt layer arranged on the back of a thin carrier material and transferable by heat acting on the front, which contains a color pigment, a wax as a binder and conventional auxiliaries, which is characterized in that that the hot melt layer contains an oxidized polyethylene wax, a vinyl acetate copolymer, a modified hydrocarbon wax or a mixture thereof with a softening temperature of 95-115 ° C and a film-forming thermoplastic binder in a weight ratio of 10: 1 to 30: 1, so that the layer has a Has melting point of 101-110 ° C.
  • the hot melt layer is preferably present in an amount of 2-12 g / m 2 on a carrier sheet with a basis weight of 6-30 g / m 2 .
  • the material according to the invention can have on the front side a known heat-sensitive recording layer which contains an initially colorless color former, a color developer and a heat-melting substance which dissolves one or both reactants.
  • the invention also includes a process for producing a heat-sensitive recording material, which is characterized in that the fusible waxes, the thermoplastic binder and a viscosity regulator are dissolved in an organic solvent or solvent mixture, the solution is rapidly cooled with stirring or in a non-solvent liquid Mixing formation of a finely divided dispersion, mixed into the dispersion, the color pigment and the coating composition applied to the carrier sheet and dried.
  • the transferable hot melt layer contains from 12 to 30 parts by weight of oxidized polyethylene wax, vinyl acetate copolymer polyethylene wax, modified hydrocarbon wax or a mixture thereof with a softening point between 95 and 115 ° C., from 0.5 to 5 parts by weight of a film-forming agent thermoplastic binder, from 4 to 10 parts by weight of heat-conducting color pigment, carbon black or other color pigments.
  • An oxidized PE wax with a softening point between 102 and 106 ° C and a needle penetration according to ASTM D 5 of 4-9 has proven to be particularly suitable.
  • waxes have an average molecular weight of 1500-2000 and a viscosity in the range of 150-200 mPas (Brookfield) at 140 ° C.
  • a vinyl acetate copolymer with a softening point of 95 ° C and a needle penetration of 9.5 according to ASTM D 5 and a viscosity of 400-600 mPas (Brookfield) at 140 ° C, or a modified hydrocarbon wax with a melting point of 101- 110 ° C, a needle penetration of 1.5-3 mm.
  • the melt viscosity of this wax is 120 ° C in the range of 140-160 mPas (Brookfield).
  • the modification of the hydrocarbon wax makes it possible to produce a very finely divided dispersion in organic solvents which can be used for the coating mixture of the hot-melt layer.
  • the other wax components mentioned are also distinguished by the fact that they can easily be processed into dispersions in organic solvents with very fine particles.
  • Reactive polyamide resins, reactive phenolic resins and resin ester products can be used as the film-forming thermoplastic component for solidification.
  • a thermoplastic polyamide resin with a softening point according to DIN 1995 of 105-115 ° C and a viscosity of 2.1-2.7 mPas at 165 ° C has proven to be particularly suitable.
  • Black pigments such as carbon black, graphite or the like, but also finely divided metal powders such as aluminum, copper, tin or the like can be used as the heat-conducting color pigment. By using a heat-conducting pigment, the melting behavior of the hot melt layer and the transferability are improved.
  • Colored carbon blacks with particle sizes between 20 and 60 Nm are particularly suitable.
  • the hot melt layer is applied to the back of a suitable thin carrier material such as paper, in particular thin printing paper, cable insulating papers, condenser papers, parchment papers, wax raw and ignition coil papers or films such as polyester films, polypropyl films.
  • a suitable thin carrier material such as paper, in particular thin printing paper, cable insulating papers, condenser papers, parchment papers, wax raw and ignition coil papers or films such as polyester films, polypropyl films.
  • the carrier materials have a basis weight between 6 and 30 g / m 2 and are usually 15 ⁇ m thick.
  • a coating composition is produced by heating and dissolving the wax or the wax mixture and the film-forming thermoplastic binder together with a dispersing aid and / or viscosity regulator in a suitable solvent or solvent mixture.
  • Suitable solvents are toluene, isopropanol, special gasoline, chlorinated hydrocarbons, xylene or mixtures thereof.
  • Products which are soluble in organic solvents for example alkyl-modified polyvinylpyrrolidone with a molecular weight between 7,000 and 20,000 and whose melting range is below 100 ° C., preferably below 50 ° C., are suitable as viscosity regulators or dispersing agents.
  • This solution is then rapidly cooled with stirring or poured into a non-solvent liquid in order to produce a finely divided dispersion of the melt layer components in the liquid phase.
  • the color pigment is then dispersed into this dispersion using suitable devices.
  • the coating composition is then applied to one side of a carrier material using conventional application units, such as knife and blade spreading heads, and the solvent is evaporated off.
  • the application weight of the continuous layer is from 2 to 12 g / m 2 , preferably from 3 to 6 g / m2 .
  • the layer has a melting point of 101 ° -10 ° C, preferably 104 ° -108 ° C.
  • a thermally responsive color development layer can be applied to the front of the carrier material before or after the application of the hot melt transfer layer.
  • This layer is approximately 2 to 10 ⁇ m thick with an application weight of 2 to 10 g / m 2 . It contains a color former and as a reaction partner a so-called acceptor and a heat-fusible compound which, in the molten state, makes contact with the color-forming reaction partners for the reaction.
  • acceptor a so-called acceptor and a heat-fusible compound which, in the molten state, makes contact with the color-forming reaction partners for the reaction.
  • Such layers are known and are described, for example, in DE-A 2 211 984 or 2 934 378.
  • the transfer material according to the invention can also have only one hot-melt layer on the back, which is transferred to an underlying recording sheet by contact of the front with the hot pen of such recording devices.
  • the coating composition obtained is applied with a doctor blade to satinized paper or a film made of polyester or polypropylene up to 25 ⁇ m thick.
  • Ls first antsteht a matte ink layer with a aarbürste H can be polished to shine and thereby enables much more intense and sharper contours transmission images.
  • the coating composition is applied to a thin printing paper with an application weight of 5 g / m 2 (atro) using conventional equipment and dried.
  • thermosensitive recording layer can be applied to the front of the carrier material.
  • the coating composition comprising a color former and an acceptor or color developer and a fusible component is applied uniformly to the carrier web and dried using conventional devices such as roller doctor blades or the like.
  • a base paper with a thickness of 25-30 ⁇ m and a Bekk smoothness of 200 to 1000 seconds is used.
  • the opacity should be such that the brightest possible thermosensitive front layer is present after the recording.
  • the advantage of the recording / transfer material according to the invention for thermal printers with a thermal head is that by using the waxes mentioned from the dispersion, the melting point of the color layer is significantly increased, and even when the thermal printer is started up over a longer period of time, the transferability and the transferred color image remain essential more constant in intensity and uniformity than with known materials.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Laminated Bodies (AREA)
EP84103623A 1983-04-27 1984-04-02 Matériel pour l'enregistrement/transfert thermosensible Expired EP0126906B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84103623T ATE28060T1 (de) 1983-04-27 1984-04-02 Waermeempfindliches aufzeichnungs/uebertragungsmaterial.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3315249A DE3315249C2 (de) 1983-04-27 1983-04-27 Wärmeempfindliches Aufzeichnungs/Übertragungsmaterial sowie Verfahren zu dessen Herstellung
DE3315249 1983-04-27

Publications (2)

Publication Number Publication Date
EP0126906A1 true EP0126906A1 (fr) 1984-12-05
EP0126906B1 EP0126906B1 (fr) 1987-07-01

Family

ID=6197488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84103623A Expired EP0126906B1 (fr) 1983-04-27 1984-04-02 Matériel pour l'enregistrement/transfert thermosensible

Country Status (3)

Country Link
EP (1) EP0126906B1 (fr)
AT (1) ATE28060T1 (fr)
DE (2) DE3315249C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179168A (en) * 1985-07-12 1987-02-25 Canon Kk Heat-sensitive transfer recording
EP0214770A2 (fr) * 1985-08-12 1987-03-18 General Company Limited Matériel thermosensible pour l'enregistrement par transfert
EP0268202A2 (fr) * 1986-11-19 1988-05-25 Kao Corporation Encre pour transfert thermique
EP0395014A1 (fr) * 1989-04-27 1990-10-31 Canon Kabushiki Kaisha Matériau pour le transfert thermique et méthode d'enregistrement par le transfert thermique

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6147296A (ja) * 1984-08-13 1986-03-07 General Kk 多数回使用感熱転写媒体
DE3520308A1 (de) * 1985-06-07 1986-12-11 Pelikan Ag, 3000 Hannover Verfahren zur herstellung eines thermofarbbandes fuer den thermotransferdruck und das danach erhaeltliche thermofarbband
DE3812001A1 (de) * 1988-04-11 1989-10-19 Pelikan Ag Schreibband und verfahren zu dessen herstellung
DE3825437C1 (fr) * 1988-07-27 1989-11-16 Pelikan Ag, 3000 Hannover, De
JP2513830B2 (ja) * 1989-03-20 1996-07-03 富士通株式会社 熱転写インクシ―ト

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1113947B (de) * 1959-07-08 1961-09-21 Kalle Ag Kopierverfahren
GB943682A (en) * 1959-11-03 1963-12-04 Labelon Tape Co Inc Thermographic method for copying indicia
DE1162386B (de) * 1961-09-09 1964-02-06 Kalle Ag Kopiermaterial fuer die Transfer-Waermereproduktionstechnik
US3368989A (en) * 1963-07-02 1968-02-13 Pacific Ind Inc Image transfer compositions comprising ethylene-vinyl acetate or ethyleneethyl acrylate copolymer, wax and incompatible plasticizer
DE2202630A1 (de) * 1971-01-25 1972-08-17 Columbia Ribbon & Carbon Thermographisches Farbblatt und damit arbeitendes thermographisches Kopierverfahren
DE3043866A1 (de) * 1979-11-26 1981-05-27 Fuji Kagakushi Kogyo Co. Ltd., Osaka Waermeempfindliches uebertragungselement
EP0076044A2 (fr) * 1981-09-21 1983-04-06 Ing. C. Olivetti & C., S.p.A. Elément encré thermosensible pour imprimante sans percussion

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1113947B (de) * 1959-07-08 1961-09-21 Kalle Ag Kopierverfahren
GB943682A (en) * 1959-11-03 1963-12-04 Labelon Tape Co Inc Thermographic method for copying indicia
DE1162386B (de) * 1961-09-09 1964-02-06 Kalle Ag Kopiermaterial fuer die Transfer-Waermereproduktionstechnik
US3368989A (en) * 1963-07-02 1968-02-13 Pacific Ind Inc Image transfer compositions comprising ethylene-vinyl acetate or ethyleneethyl acrylate copolymer, wax and incompatible plasticizer
DE2202630A1 (de) * 1971-01-25 1972-08-17 Columbia Ribbon & Carbon Thermographisches Farbblatt und damit arbeitendes thermographisches Kopierverfahren
DE3043866A1 (de) * 1979-11-26 1981-05-27 Fuji Kagakushi Kogyo Co. Ltd., Osaka Waermeempfindliches uebertragungselement
EP0076044A2 (fr) * 1981-09-21 1983-04-06 Ing. C. Olivetti & C., S.p.A. Elément encré thermosensible pour imprimante sans percussion

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT JAPANESE PATENTS REPORT, Band 5, Nr. 52, Section 3b, Seite 5; & JP-B-41 022 062 (N. KUWANO) 12.08.1960) *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179168A (en) * 1985-07-12 1987-02-25 Canon Kk Heat-sensitive transfer recording
GB2179168B (en) * 1985-07-12 1989-11-29 Canon Kk Heat-sensitive transfer recording method
EP0214770A2 (fr) * 1985-08-12 1987-03-18 General Company Limited Matériel thermosensible pour l'enregistrement par transfert
EP0214770A3 (en) * 1985-08-12 1988-10-05 General Company Limited Heat sensitive transferring recording medium
EP0268202A2 (fr) * 1986-11-19 1988-05-25 Kao Corporation Encre pour transfert thermique
EP0268202A3 (en) * 1986-11-19 1989-11-29 Kao Corporation Thermal transfer ink
EP0395014A1 (fr) * 1989-04-27 1990-10-31 Canon Kabushiki Kaisha Matériau pour le transfert thermique et méthode d'enregistrement par le transfert thermique
US5268052A (en) * 1989-04-27 1993-12-07 Canon Kabushiki Kaisha Thermal transfer material and thermal transfer recording method
US5389429A (en) * 1989-04-27 1995-02-14 Canon Kabushiki Kaisha Thermal transfer material and thermal transfer recording method

Also Published As

Publication number Publication date
ATE28060T1 (de) 1987-07-15
DE3464476D1 (en) 1987-08-06
DE3315249A1 (de) 1984-10-31
DE3315249C2 (de) 1987-01-22
EP0126906B1 (fr) 1987-07-01

Similar Documents

Publication Publication Date Title
DE2746129C2 (de) Wärmeempfindliches Aufzeichnungsmaterial
DE3043866C2 (fr)
DE60209619T2 (de) Verfahren zur Bilderzeugung und Produkt mit einem darauf erzeugten Bild
DE3808462C2 (de) Wärmeempfindliches Übertragungsmaterial
EP0126906B1 (fr) Matériel pour l'enregistrement/transfert thermosensible
DE1571815C3 (de) Druckform für den Sublimationsdruck und Farbfolie zu deren Herstellung
DE60219253T2 (de) Thermotransferfolie, Thermotransferaufzeichnungsmedium und Verfahren zur Bilderzeugung unter Verwendung derselben
DE69424069T2 (de) Wärmeübertragungsblatt
DE4215893C2 (de) Thermisches Bildübertragungsaufzeichnungsmaterial
DE3625591A1 (de) Thermo-rbertragungsmaterial, verfahren zu seiner herstellung und verfahren zur thermo-rbertragungsaufzeichnung
DE2202630A1 (de) Thermographisches Farbblatt und damit arbeitendes thermographisches Kopierverfahren
DE69700576T2 (de) Zusammengesetzte Schicht für thermische Übertragung und Bildempfangsschicht für thermische Übertragung
DE2256021C2 (de) Verfahren zum Entwickeln eines elektrophotographisch erzeugten Bildes und die Verwendung eines Toners und eines Tonerbildempfangsmaterials in diesem Verfahren
DE60202915T2 (de) Thermotransferblatt, Verfahren zu dessen Herstellung und Verfahren zur Bilderzeugung unter Verwendung des Thermotransferblattes
DE3623483A1 (de) Waermesensitives aufzeichnungsmaterial
DE68918996T2 (de) Elektrophotographisches Verfahren.
DE60016861T2 (de) Thermisches Bildübertragungs-Aufzeichnungsmaterial, Bildherstellungsverfahren und Bildträger
JPS58128897A (ja) 感熱転写記録紙の製造方法
DE68925419T2 (de) Bildempfangsmedium
DE3902302A1 (de) Thermotransfer-aufzeichnungsmaterial und verfahren zu seiner herstellung
DE69611413T2 (de) Elektrophotographisches Transfertmedium für Abziehbilder
JPH0131793B2 (fr)
DE69223751T2 (de) Farbstoffenthaltende schicht für thermoübertragungsdruck zur herstellung von farbbildern
DE10125681C1 (de) Verfahren zum Übertragen von auf Druckvorlagen befindlichen Abbildungen auf farbige Unterlagen sowie hierzu geeignetes Vorlagematerial
JPH0461798B2 (fr)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19850123

17Q First examination report despatched

Effective date: 19860307

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 28060

Country of ref document: AT

Date of ref document: 19870715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3464476

Country of ref document: DE

Date of ref document: 19870806

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19890331

Year of fee payment: 6

Ref country code: FR

Payment date: 19890331

Year of fee payment: 6

Ref country code: BE

Payment date: 19890331

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19890411

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19890417

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19890424

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19890426

Year of fee payment: 6

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19890430

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19900402

Ref country code: AT

Effective date: 19900402

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19900403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19900430

Ref country code: CH

Effective date: 19900430

Ref country code: BE

Effective date: 19900430

BERE Be: lapsed

Owner name: RENKER G.M.B.H. & CO. K.G.

Effective date: 19900430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19901101

GBPC Gb: european patent ceased through non-payment of renewal fee
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19901228

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19910101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 84103623.9

Effective date: 19910115