JPS55139290A - Multicolor thermosensitive recording material - Google Patents

Multicolor thermosensitive recording material

Info

Publication number
JPS55139290A
JPS55139290A JP4728779A JP4728779A JPS55139290A JP S55139290 A JPS55139290 A JP S55139290A JP 4728779 A JP4728779 A JP 4728779A JP 4728779 A JP4728779 A JP 4728779A JP S55139290 A JPS55139290 A JP S55139290A
Authority
JP
Japan
Prior art keywords
color
eliminating
thermal
agent
eliminating agent
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
JP4728779A
Other languages
Japanese (ja)
Other versions
JPS5759079B2 (en
Inventor
Takashi Kubo
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP4728779A priority Critical patent/JPS55139290A/en
Publication of JPS55139290A publication Critical patent/JPS55139290A/en
Publication of JPS5759079B2 publication Critical patent/JPS5759079B2/ja
Granted 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
    • B41M5/34—Multicolour thermography

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Abstract

PURPOSE:To form a clear picture of high contrast and without color mixture by a very little thermal energy by using a water-insoluble or hardly-water-soluble urea derivative as a color-eliminating agent for a thermal layer whose color is developed at low temperature. CONSTITUTION:A color-eliminating agent of urea derivative has, as its main ingredients, a thermal color-developing agent constituted of colorless or light-colored leuco dye and a developer constituted of phenolic or acid material and is also formed of such water-insoluble or hardly-water-soluble urea derivative as phenylthiourea, benzoylurea, 1-acetyl-3-methylurea etc., as the color-eliminating agent, contained in a thermal layer whose color is developed at low temperature and which is formed from a binder of organic high molecular compound. The color-eliminating agent of urea derivative can also be used as the color-eliminating agent for a color-eliminating layer provided between low-temperature and high-temperature thermal color- development layers. As for the color-eliminating agent used in the low-temperature thermal color development layer, the agent that has 0.05-0.3pt.wt. against 1pt.wt. of the color-eliminating agent used for the color-eliminating layer is fitted.
JP4728779A 1979-04-19 1979-04-19 Multicolor thermosensitive recording material Granted JPS55139290A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4728779A JPS55139290A (en) 1979-04-19 1979-04-19 Multicolor thermosensitive recording material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4728779A JPS55139290A (en) 1979-04-19 1979-04-19 Multicolor thermosensitive recording material

Publications (2)

Publication Number Publication Date
JPS55139290A true JPS55139290A (en) 1980-10-30
JPS5759079B2 JPS5759079B2 (en) 1982-12-13

Family

ID=12771066

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4728779A Granted JPS55139290A (en) 1979-04-19 1979-04-19 Multicolor thermosensitive recording material

Country Status (1)

Country Link
JP (1) JPS55139290A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58193190A (en) * 1982-05-06 1983-11-10 Ricoh Co Ltd Thermosensitive recording material
US4599630A (en) * 1983-11-15 1986-07-08 Ricoh Company, Ltd. Two-color thermosensitive recording material
JPS61215086A (en) * 1985-03-20 1986-09-24 Ricoh Co Ltd Two-color forming thermal recording material
JPS61220888A (en) * 1985-03-27 1986-10-01 Ricoh Co Ltd Two color forming thermal recording material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58193190A (en) * 1982-05-06 1983-11-10 Ricoh Co Ltd Thermosensitive recording material
JPH025199B2 (en) * 1982-05-06 1990-01-31 Ricoh Kk
US4599630A (en) * 1983-11-15 1986-07-08 Ricoh Company, Ltd. Two-color thermosensitive recording material
JPS61215086A (en) * 1985-03-20 1986-09-24 Ricoh Co Ltd Two-color forming thermal recording material
JPS61220888A (en) * 1985-03-27 1986-10-01 Ricoh Co Ltd Two color forming thermal recording material

Also Published As

Publication number Publication date
JPS5759079B2 (en) 1982-12-13

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