JPS57116691A - Multicolor thermal recording sheet - Google Patents

Multicolor thermal recording sheet

Info

Publication number
JPS57116691A
JPS57116691A JP56002920A JP292081A JPS57116691A JP S57116691 A JPS57116691 A JP S57116691A JP 56002920 A JP56002920 A JP 56002920A JP 292081 A JP292081 A JP 292081A JP S57116691 A JPS57116691 A JP S57116691A
Authority
JP
Japan
Prior art keywords
layer
color
developing
temperature
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.)
Pending
Application number
JP56002920A
Other languages
Japanese (ja)
Inventor
Yoshihiko Hotta
Tadao Katsuragawa
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 JP56002920A priority Critical patent/JPS57116691A/en
Publication of JPS57116691A publication Critical patent/JPS57116691A/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 the multicolor thermal recording sheet wherein a picture on the upper layer thereof is not blurred at the time when the lower layer is developed in color, by inserting an intermediate layer containing heat-melted material into thermal color-developing layers. CONSTITUTION:The sheet is composed of three layers, i.e. a layer 1 having the highest color-developing temperature, a layer 1' having intermediate color- developing temperature and a layer 1'' having the lowest color-developing temperature, which contain color-developing agents developing colors differently from each other and are laminated on a supporting body 4. The layer of the lowest temperature is formed of a leuco-body base of triphenyl methane dye or fluoran dye, while the layer of the highest temperature is formed of a open- ring lactone compound whereto a color-development promoting agent is added. To the intermediate layer is added animal or vegetable wax or paraffin wax as the heat-melted material together with such a binder as employed for the thermal color-developing layer. The thickness of the intermediate layer is made to be about 1-5mu. By inserting the intermediate layer in this way, the sheet wherein the picture on the upper layer is not blurred when the color of the lower layer is developed can be obtained.
JP56002920A 1981-01-12 1981-01-12 Multicolor thermal recording sheet Pending JPS57116691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56002920A JPS57116691A (en) 1981-01-12 1981-01-12 Multicolor thermal recording sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56002920A JPS57116691A (en) 1981-01-12 1981-01-12 Multicolor thermal recording sheet

Publications (1)

Publication Number Publication Date
JPS57116691A true JPS57116691A (en) 1982-07-20

Family

ID=11542782

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56002920A Pending JPS57116691A (en) 1981-01-12 1981-01-12 Multicolor thermal recording sheet

Country Status (1)

Country Link
JP (1) JPS57116691A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5869707A (en) * 1981-07-06 1983-04-26 ロ−ヌ−プ−ラン・シミ−・ドウ・バ−ズ Anhydrous sodium tripolyphosphate and manufacture
FR2568184A1 (en) * 1984-07-27 1986-01-31 Ricoh Kk THERMOSENSIBLE RECORDING LABEL IN TWO COLORS.
WO2002096665A1 (en) * 2001-05-30 2002-12-05 Polaroid Corporation Thermal imaging system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5869707A (en) * 1981-07-06 1983-04-26 ロ−ヌ−プ−ラン・シミ−・ドウ・バ−ズ Anhydrous sodium tripolyphosphate and manufacture
FR2568184A1 (en) * 1984-07-27 1986-01-31 Ricoh Kk THERMOSENSIBLE RECORDING LABEL IN TWO COLORS.
JPS6135284A (en) * 1984-07-27 1986-02-19 Ricoh Co Ltd Releasable paper for two-color thermal recording type label
WO2002096665A1 (en) * 2001-05-30 2002-12-05 Polaroid Corporation Thermal imaging system
EA008721B1 (en) * 2001-05-30 2007-06-29 Зинк Имэджинг, Ллк Thermal imaging system
EA011754B1 (en) * 2001-05-30 2009-06-30 Зинк Имэджинг, Ллк Thermal imaging system and method

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