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JPS57116688A - Thermal recording sheet - Google Patents

Thermal recording sheet

Info

Publication number
JPS57116688A
JPS57116688A JP56003528A JP352881A JPS57116688A JP S57116688 A JPS57116688 A JP S57116688A JP 56003528 A JP56003528 A JP 56003528A JP 352881 A JP352881 A JP 352881A JP S57116688 A JPS57116688 A JP S57116688A
Authority
JP
Japan
Prior art keywords
color
developing
copolymer
styrene
thermal
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
JP56003528A
Other languages
Japanese (ja)
Other versions
JPH0214915B2 (en
Inventor
Hisashi Sakai
Yoshihiro Suguro
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 JP56003528A priority Critical patent/JPS57116688A/en
Publication of JPS57116688A publication Critical patent/JPS57116688A/en
Publication of JPH0214915B2 publication Critical patent/JPH0214915B2/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
    • B41M5/30—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
    • B41M5/3372—Macromolecular 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 abrasion of a thermal head, by blending a copolymer of styrene-methacrylic acid in a thermal color-developing layer. CONSTITUTION:Styrene and methacrylic acid are copolymerized in a ratio of about 1:0.1-1:1 to give a copolymer having the molecular weight of about 10,000-200,000. Fine particles of this copolymer having a particle size of 0.05- 20mu is blended with main color-developing components consisting of a color- developing material which is colorless or light-colored usually, and an organic acid material which develops the color of said color-developing material by heat, a binder and additives of various kind, whereby a fluid for forming a thermal color-developing layer is prepared. The content of the styrene-methacrylic acid copolymer in the thermal color-developing layer corresponds to those of inorganic filler powder and organic resin powder, preferably, 5-60wt% of the total weight of the thermal color-developing layer. The heat-sensitive coating fluid containing the styrene-methacrylic acid copolymer is applied in an amount of 8-15g/m<2> on a support such as paper, whereby the thermal color-developing layer is formed.
JP56003528A 1981-01-13 1981-01-13 Thermal recording sheet Granted JPS57116688A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56003528A JPS57116688A (en) 1981-01-13 1981-01-13 Thermal recording sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56003528A JPS57116688A (en) 1981-01-13 1981-01-13 Thermal recording sheet

Publications (2)

Publication Number Publication Date
JPS57116688A true JPS57116688A (en) 1982-07-20
JPH0214915B2 JPH0214915B2 (en) 1990-04-10

Family

ID=11559878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56003528A Granted JPS57116688A (en) 1981-01-13 1981-01-13 Thermal recording sheet

Country Status (1)

Country Link
JP (1) JPS57116688A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5747414A (en) * 1995-06-15 1998-05-05 Nippon Paper Industries, Ltd. Thermal recording sheet

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54128348A (en) * 1978-03-28 1979-10-04 Kanzaki Paper Mfg Co Ltd Heattsensitive record

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54128348A (en) * 1978-03-28 1979-10-04 Kanzaki Paper Mfg Co Ltd Heattsensitive record

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5747414A (en) * 1995-06-15 1998-05-05 Nippon Paper Industries, Ltd. Thermal recording sheet

Also Published As

Publication number Publication date
JPH0214915B2 (en) 1990-04-10

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