JPS57178792A - Black color heat sensitive recording medium - Google Patents

Black color heat sensitive recording medium

Info

Publication number
JPS57178792A
JPS57178792A JP56062616A JP6261681A JPS57178792A JP S57178792 A JPS57178792 A JP S57178792A JP 56062616 A JP56062616 A JP 56062616A JP 6261681 A JP6261681 A JP 6261681A JP S57178792 A JPS57178792 A JP S57178792A
Authority
JP
Japan
Prior art keywords
coloring
alkyl group
group
heat sensitive
signifies hydrogen
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.)
Pending
Application number
JP56062616A
Other languages
Japanese (ja)
Inventor
Genichi Matsuda
Shinichiro Katsuta
Kaoru Kubota
Susumu Wakatsuki
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.)
Kohjin Holdings Co Ltd
Kojin Co Ltd
Original Assignee
Kohjin Holdings Co Ltd
Kojin 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
Application filed by Kohjin Holdings Co Ltd, Kojin Co Ltd filed Critical Kohjin Holdings Co Ltd
Priority to JP56062616A priority Critical patent/JPS57178792A/en
Publication of JPS57178792A publication Critical patent/JPS57178792A/en
Pending 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
    • B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
    • B41M5/323—Organic colour formers, e.g. leuco dyes
    • B41M5/327—Organic colour formers, e.g. leuco dyes with a lactone or lactam ring
    • B41M5/3275—Fluoran compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Abstract

PURPOSE:To prevent discoloring of a recorded image and a background coloring by employing as a leuco dye a specific brown black coloring fluorine compound and a green coloring fluorine compound. CONSTITUTION:A heat sensitive layer contains at least one of brown black coloring fluorine compounds represented by the formulaI, where R1, R2 signify hydrogen, alkyl group, alicyclic group, substituted alkyl group, phenyl group, etc., R3 signifies hydrogen or alkyl group, Xn signifies hydrogen, alkyl group, alicyclic group, phenyl group, etc., m, n signify 0-3, and Ym signifies hydrogen, alkyl, halogenated alkyl group, etc., and at least one of green coloring fluorine compounds represented by the formula II. Red side wavelength of visible spectrum is absorbed by these leuco dyes, thereby approaching to pure black as near as possible, and further preventing discoloring of the recorded image and background coloring.
JP56062616A 1981-04-27 1981-04-27 Black color heat sensitive recording medium Pending JPS57178792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56062616A JPS57178792A (en) 1981-04-27 1981-04-27 Black color heat sensitive recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56062616A JPS57178792A (en) 1981-04-27 1981-04-27 Black color heat sensitive recording medium

Publications (1)

Publication Number Publication Date
JPS57178792A true JPS57178792A (en) 1982-11-04

Family

ID=13205419

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56062616A Pending JPS57178792A (en) 1981-04-27 1981-04-27 Black color heat sensitive recording medium

Country Status (1)

Country Link
JP (1) JPS57178792A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59133258A (en) * 1983-01-20 1984-07-31 Kanzaki Paper Mfg Co Ltd Fluoran derivative, production thereof and recording material using the same
JPS59148694A (en) * 1983-02-14 1984-08-25 Ricoh Co Ltd Thermal recording material
US4510513A (en) * 1983-04-14 1985-04-09 Hodogaya Chemical Co., Ltd. Heat sensitive record sheet
JPS60255482A (en) * 1984-06-01 1985-12-17 Mitsubishi Paper Mills Ltd Reversible image forming material
US4590498A (en) * 1982-12-27 1986-05-20 Shin Nisso Kako Co., Ltd. Chromogenic recording materials
JPS61185484A (en) * 1985-02-13 1986-08-19 Jujo Paper Co Ltd Thermal recording paper
JPS61193883A (en) * 1985-02-23 1986-08-28 Ricoh Co Ltd heat sensitive recording material
JPS62294647A (en) * 1987-05-22 1987-12-22 Shin Nisso Kako Co Ltd Benzoic acid derivative
JPS63122759A (en) * 1986-10-31 1988-05-26 チバーガイギ　アクチエンゲゼルシヤフト Fluorane coupler mixture and use thereof in recording material
JPH02103180A (en) * 1988-10-12 1990-04-16 Mitsubishi Paper Mills Ltd heat sensitive recording material
US5338866A (en) * 1991-12-12 1994-08-16 Yamamoto Chemicals, Inc. Crystal modification of 2-(3-methylanilino)-3-methyl-6-diethylaminofluoran, process for the preparation thereof, and recording materials containing said crystal modification
US5342967A (en) * 1991-08-01 1994-08-30 Yamamoto Chemicals, Inc. Crystal modifications of 2-M-toluidino-3-methyl-6-di-N-butylaminofluoran, process for preparing thereof, and recording materials containing said crystal modifications

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54109454A (en) * 1978-02-15 1979-08-28 Kanzaki Paper Mfg Co Ltd Heatsensitive recording element

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54109454A (en) * 1978-02-15 1979-08-28 Kanzaki Paper Mfg Co Ltd Heatsensitive recording element

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4590498A (en) * 1982-12-27 1986-05-20 Shin Nisso Kako Co., Ltd. Chromogenic recording materials
JPS59133258A (en) * 1983-01-20 1984-07-31 Kanzaki Paper Mfg Co Ltd Fluoran derivative, production thereof and recording material using the same
JPS59148694A (en) * 1983-02-14 1984-08-25 Ricoh Co Ltd Thermal recording material
USRE33815E (en) * 1983-04-14 1992-02-04 Hodogaya Chemical Co., Ltd. Heat sensitive record sheet
US4510513A (en) * 1983-04-14 1985-04-09 Hodogaya Chemical Co., Ltd. Heat sensitive record sheet
JPS60255482A (en) * 1984-06-01 1985-12-17 Mitsubishi Paper Mills Ltd Reversible image forming material
JPS61185484A (en) * 1985-02-13 1986-08-19 Jujo Paper Co Ltd Thermal recording paper
JPS61193883A (en) * 1985-02-23 1986-08-28 Ricoh Co Ltd heat sensitive recording material
JPS63122759A (en) * 1986-10-31 1988-05-26 チバーガイギ　アクチエンゲゼルシヤフト Fluorane coupler mixture and use thereof in recording material
JPS62294647A (en) * 1987-05-22 1987-12-22 Shin Nisso Kako Co Ltd Benzoic acid derivative
JPH02103180A (en) * 1988-10-12 1990-04-16 Mitsubishi Paper Mills Ltd heat sensitive recording material
US5342967A (en) * 1991-08-01 1994-08-30 Yamamoto Chemicals, Inc. Crystal modifications of 2-M-toluidino-3-methyl-6-di-N-butylaminofluoran, process for preparing thereof, and recording materials containing said crystal modifications
US5338866A (en) * 1991-12-12 1994-08-16 Yamamoto Chemicals, Inc. Crystal modification of 2-(3-methylanilino)-3-methyl-6-diethylaminofluoran, process for the preparation thereof, and recording materials containing said crystal modification
US5376617A (en) * 1991-12-12 1994-12-27 Yamamoto Chemicals, Inc. Crystal modification of 2-(3-methylanilion)-3-methyl-6-diethylamino-fluoran, process for the preparation thereof, and recording materials containing said crystal modification

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