EP0058345A1 - Feuille d'enregistrement thermosensible - Google Patents

Feuille d'enregistrement thermosensible Download PDF

Info

Publication number
EP0058345A1
EP0058345A1 EP82100773A EP82100773A EP0058345A1 EP 0058345 A1 EP0058345 A1 EP 0058345A1 EP 82100773 A EP82100773 A EP 82100773A EP 82100773 A EP82100773 A EP 82100773A EP 0058345 A1 EP0058345 A1 EP 0058345A1
Authority
EP
European Patent Office
Prior art keywords
methyl
heat
diethylamino
sensitive recording
recording 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.)
Granted
Application number
EP82100773A
Other languages
German (de)
English (en)
Other versions
EP0058345B2 (fr
EP0058345B1 (fr
Inventor
Masuhiko Sato
Toshimi Satake
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.)
Jujo Paper Co Ltd
Original Assignee
Jujo Paper 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11894856&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0058345(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Jujo Paper Co Ltd filed Critical Jujo Paper Co Ltd
Publication of EP0058345A1 publication Critical patent/EP0058345A1/fr
Application granted granted Critical
Publication of EP0058345B1 publication Critical patent/EP0058345B1/fr
Publication of EP0058345B2 publication Critical patent/EP0058345B2/fr
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
    • B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
    • B41M5/337—Additives; Binders
    • B41M5/3375—Non-macromolecular compounds
    • 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

Definitions

  • the invention relates to a heat-sensitive recording sheet which has a superior color formation effect and a high stability against hair oil, sweat and skin secretions etc.
  • a heat-sensitive recording sheet using a heat color reaction between a colorless or weakly colored chromogenic dye and a phenolic substance or an organic acid is disclosed in Japanese Patent Publications 4160/1968 and 14039/1970, among others, and in Japanese Laid-open specification 27736/1973. There is currently a wide variety of practical applications.
  • a heat-sensitive recording sheet is generally prepared by applying a coating color to the surface of the support such as paper, film, etc., which by fine grinding and dispersing a colorless chromogenic dye and a color developing material such as phenolic substances into fine particles by mixing the dispersions obtained and by adding a binder, filler, sensitizer, lubricant and other auxiliaries.
  • heat sensitive recording sheets are widely used in practice, including at medical and technical recording devices, terminal printers of computers and information systems, printers of facsimile machines and electronic calculating machines, ticket machines and the like.
  • a heat-sensitive recording sheet have a superior recording ability, that the whiteness does not decrease or deteriorate little over time and that there are no problems such as residues adhering to the thermal head or sticking of the heat-sensitive recording sheet to the thermal head, etc. occur. Further, it is desirable to find a heat sensitive recording sheet in which the recording image and the surface is resistant to the influence of hair oil, sweat, etc. sticking to the hands.
  • the invention has for its object to provide a heat-sensitive recording sheet in which the recording image is very stable against the action of oily materials such as hair oil, sweat, etc. and the quality of the recording material is not impaired.
  • This object is achieved in the case of a heat-sensitive recording sheet in that it contains dimethyl terephthalate in the color formation layer which contains a basic colorless or slightly colored chromogenic dye and an organic color developing agent.
  • dimethyl terephthalate melts into the color forming material, causing the stabilization of the recording image.
  • Dimethyl terephthalate forms needle crystals with a melting point of 140 ° C and a boiling point of 288 ° C; it is used as a raw material for the production of synthetic polyester fibers.
  • dimethyl isophthalate As a substance with a structure similar to that of dimethyl terephthalate, dimethyl isophthalate is described as a sensitizer in Japanese Laid-Open Publication 5636/1978. But dimethyl isophthalate has a melting point of 67-68 ° C and a boiling point of 124 ° C, which are lower than the melting point and boiling point of dimethyl terephthalate.
  • dimethyl isophthalate with such physical properties leads to the destabilization of a heat-sensitive recording sheet, thus to a loss of quality and to a greatly reduced productivity, because the drying temperature during drying after coating is always limited to less than 67-68 ° C.
  • Organic acids or phenolic substances such as bisphenol A (4,4'-isopropylidenediphenol), pp l (1-methyl-n-hexylidene) diphenol, p-tertiary butylphenol, p-phenylphenol, novolak phenolic resins and p-hydroxybenzoic acid benzyl esters are used as organic color developing agents according to the invention used.
  • organic color developing agents are used alone or in a mixture, depending on the use and skills required.
  • the amount of the dimethyl terephthalate of the present invention, and the kind and the amount of the other ingredients, which are determined depending on the desired effect and suitability for recording purposes, are not particularly limited.
  • Solution B (dispersion of color developing agents):
  • Solution B (dispersion of color developing agents):
  • These coating colors were applied in a coating amount of 6.0 g / m 2 to a base paper with a weight of 50 g / m 2 , dried and supercalendered to set a smoothness of 200-300 seconds.
  • the heat-sensitive recording sheets obtained which form a black color, were tested for their quality and behavior.
  • the results are summarized in Table 2:
  • the heat-sensitive recording sheet using benzyl p-hydroxybenzoate as a color developing agent has a much higher residual image density after being contaminated with a castor oil than the comparative product.
  • Dimethyl terephthalate gives the product great stability against the effects of contaminated substances.
EP82100773A 1981-02-06 1982-02-03 Feuille d'enregistrement thermosensible Expired - Lifetime EP0058345B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP56015659A JPS57129785A (en) 1981-02-06 1981-02-06 Heat sensitive recording paper
JP15659/81 1981-02-06

Publications (3)

Publication Number Publication Date
EP0058345A1 true EP0058345A1 (fr) 1982-08-25
EP0058345B1 EP0058345B1 (fr) 1984-09-05
EP0058345B2 EP0058345B2 (fr) 1991-08-14

Family

ID=11894856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100773A Expired - Lifetime EP0058345B2 (fr) 1981-02-06 1982-02-03 Feuille d'enregistrement thermosensible

Country Status (4)

Country Link
US (1) US4431706A (fr)
EP (1) EP0058345B2 (fr)
JP (1) JPS57129785A (fr)
DE (1) DE3260642D1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526717A1 (fr) * 1982-05-14 1983-11-18 Mitsubishi Paper Mills Ltd Feuille d'enregistrement sensible a la chaleur
FR2550998A1 (fr) * 1983-08-24 1985-03-01 Kawasaki Kasei Chemicals Feuille d'enregistrement thermosensible
FR2582990A1 (fr) * 1985-06-10 1986-12-12 Labelon Corp Composition thermosensible pour materiau thermosensible d'impression ou d'enregistrement
EP0137982B1 (fr) * 1983-08-24 1987-12-23 Jujo Paper Co., Ltd. Feuille d'enregistrement sensible à la chaleur
EP0345755A2 (fr) * 1988-06-08 1989-12-13 New Oji Paper Co., Ltd. Matériau d'enregistrement thermosensible
EP0870625A1 (fr) * 1997-04-10 1998-10-14 Appleton Papers Inc. Matériau d'enregistrement sensible à la chaleur
EP0967089A2 (fr) * 1998-06-22 1999-12-29 Nippon Paper Industries Co., Ltd. Milieu d'enregistrement sensible à la chaleur

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60151091A (ja) * 1984-01-20 1985-08-08 Fuji Photo Film Co Ltd 感熱記録材料の製造方法
US6093678A (en) * 1997-08-19 2000-07-25 Nippon Paper Industries Co. Ltd. Spontaneously color changing type thermal sensitive recording medium
GB0322907D0 (en) * 2003-09-30 2003-10-29 Arjo Wiggins Ltd Improvements in thermal paper

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5672996A (en) * 1979-11-21 1981-06-17 Hodogaya Chem Co Ltd Thermal recording paper

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082156A (en) * 1976-07-01 1978-04-04 Caterpillar Tractor Co. Drive mechanism having separable housing
JPS5741994A (en) * 1980-08-28 1982-03-09 Dainippon Ink & Chem Inc Heat-sensitive recording sheet
JPS57116690A (en) * 1981-01-13 1982-07-20 Ricoh Co Ltd Thermal recording material
JPS57126693A (en) * 1981-01-29 1982-08-06 Ricoh Co Ltd Thermal recording sheet

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5672996A (en) * 1979-11-21 1981-06-17 Hodogaya Chem Co Ltd Thermal recording paper

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 5, Nr. 139, 3. September 1981, seite (M-86) (811) & JP - A - 56 72 996 (Hodogaya Kagaku Kogyo) (17-06-1981) * die ganze Zusammenfassung * *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526717A1 (fr) * 1982-05-14 1983-11-18 Mitsubishi Paper Mills Ltd Feuille d'enregistrement sensible a la chaleur
FR2550998A1 (fr) * 1983-08-24 1985-03-01 Kawasaki Kasei Chemicals Feuille d'enregistrement thermosensible
EP0137982B1 (fr) * 1983-08-24 1987-12-23 Jujo Paper Co., Ltd. Feuille d'enregistrement sensible à la chaleur
FR2582990A1 (fr) * 1985-06-10 1986-12-12 Labelon Corp Composition thermosensible pour materiau thermosensible d'impression ou d'enregistrement
EP0345755A2 (fr) * 1988-06-08 1989-12-13 New Oji Paper Co., Ltd. Matériau d'enregistrement thermosensible
EP0345755A3 (fr) * 1988-06-08 1991-03-20 New Oji Paper Co., Ltd. Matériau d'enregistrement thermosensible
EP0870625A1 (fr) * 1997-04-10 1998-10-14 Appleton Papers Inc. Matériau d'enregistrement sensible à la chaleur
EP0967089A2 (fr) * 1998-06-22 1999-12-29 Nippon Paper Industries Co., Ltd. Milieu d'enregistrement sensible à la chaleur
EP0967089A3 (fr) * 1998-06-22 2000-01-19 Nippon Paper Industries Co., Ltd. Milieu d'enregistrement sensible à la chaleur

Also Published As

Publication number Publication date
JPS57129785A (en) 1982-08-11
EP0058345B2 (fr) 1991-08-14
EP0058345B1 (fr) 1984-09-05
US4431706A (en) 1984-02-14
DE3260642D1 (en) 1984-10-11

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