JPS55109691A - Multicolor heat sensitive recording material - Google Patents

Multicolor heat sensitive recording material

Info

Publication number
JPS55109691A
JPS55109691A JP1675579A JP1675579A JPS55109691A JP S55109691 A JPS55109691 A JP S55109691A JP 1675579 A JP1675579 A JP 1675579A JP 1675579 A JP1675579 A JP 1675579A JP S55109691 A JPS55109691 A JP S55109691A
Authority
JP
Japan
Prior art keywords
coloring
achromatic
heat sensitive
upper layer
layers
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
JP1675579A
Other languages
Japanese (ja)
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 JP1675579A priority Critical patent/JPS55109691A/en
Publication of JPS55109691A publication Critical patent/JPS55109691A/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
    • B41M5/34—Multicolour thermography

Landscapes

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

Abstract

PURPOSE:To obtain a sufficient achromatic effect even with less heat energy in coloring at high temperature by providing achromatic agents the melting points of which are different from each from each other (one in the upper layer is higher than the other by a specific value) in the upper and middle layers of two heat sensitive coloring layers. CONSTITUTION:Two heat sensitive coloring layers the coloring temperatures and color tones of which are different from aeach other respectively (coloring component in the upper layer contans colorless or light color leuco dyestuff and phenolic or acidic material) are overlapped, the melting point of the achromatic agent in the upper layer is made higher than that of the other in the middle layer by 20 deg.C or more. A sufficiently colored picture can be obtained without affection to the achromatic agent in coloring at low temperature, a remakable achromatic effect is developed even with less heat energy in coloring at high temperature, a greatly clear contrast can be obtained.
JP1675579A 1979-02-17 1979-02-17 Multicolor heat sensitive recording material Pending JPS55109691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1675579A JPS55109691A (en) 1979-02-17 1979-02-17 Multicolor heat sensitive recording material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1675579A JPS55109691A (en) 1979-02-17 1979-02-17 Multicolor heat sensitive recording material

Publications (1)

Publication Number Publication Date
JPS55109691A true JPS55109691A (en) 1980-08-23

Family

ID=11925052

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1675579A Pending JPS55109691A (en) 1979-02-17 1979-02-17 Multicolor heat sensitive recording material

Country Status (1)

Country Link
JP (1) JPS55109691A (en)

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