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Thermosensitive recording medium and article

A heat-sensitive recording medium and technology of heat-sensitive recording, applied in the direction of temperature recording method, copying/marking method, printing, etc., can solve the problems of image fading, adversely affecting hardness, deteriorating image part fading, etc., and achieve high color rendering sensitivity. Effect

Active Publication Date: 2019-02-12
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there arises a new problem that hand cream for hand protection adheres to the heat-sensitive recording layer of the ticket and commuter pass, causing adverse effects such as deterioration of hardness or fading of image parts
Here, there is a new problem: the part of the image touched by the hand cream can fade

Method used

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  • Thermosensitive recording medium and article
  • Thermosensitive recording medium and article
  • Thermosensitive recording medium and article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0184]

[0185] -Preparation of Undercoat Coating Liquid -

[0186] Components in the following composition (composition) were mixed and stirred to prepare an undercoat layer coating liquid .

[0187]

[0188] -Hollow particles (with a hollow ratio of 90%, a volume average particle diameter of 4.4 μm, and a solid concentration of 33% by mass): 20 parts by mass

[0189] - Styrene / butadiene copolymer latex (with a solid concentration of 47.5% by mass): 20 parts by mass

[0190] - 10% by mass aqueous solution of polyvinyl alcohol (available from Kuraray Co., Ltd., PVA117): 20 parts by mass

[0191] -Ion-exchanged water: 40 parts by mass

[0192] -Preparation of thermosensitive recording layer coating liquid -

[0193] Compositions of , , and each comprising the following components were prepared by dispersing a leuco dye or a color developer using a sand mill so that in , , The average particle diameters of the leuco dye or the developer in any of and become 0.5 microm...

Embodiment 2-15 and comparative example 1-7

[0263] The thermosensitive recording media of Examples 2-15 and Comparative Examples 1-7 were produced in the same manner as in Example 1 except that the combination of the thermosensitive recording layer and the protective layer of Example 1 was changed to the following Table 1 combinations listed.

[0264] [Table 1]

[0265]

[0266] Next, various properties of the thermosensitive recording media produced in Examples 1-15 and Comparative Examples 1-7 were evaluated in the following manner. The results are listed in Table 2.

[0267]

[0268] Each thermosensitive recording medium exhibited a temperature of 0.2 MPa at each of 130 degrees Celsius, 140 degrees Celsius, 150 degrees Celsius, 160 degrees Celsius and 170 degrees Celsius by a thermal gradient tester (HEAT GRADIENT, available from Toyo Seiki Co., Ltd.). The color was colored for 2 seconds, and the resulting image density was measured by a Macbeth reflection densitometer (RD-914, available from Gretag Macbeth Lt...

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Abstract

Provided is a thermosensitive recording medium including a support, and a thermosensitive recording layer provided over at least one surface of the support and containing a leuco dye and a developer,wherein the developer includes 4-hydroxy-4'-benzyloxydiphenylsulfone and a diphenylsulfone compound represented by general formula (1), and wherein a content of the diphenylsulfone compound represented by general formula (1) is less than 3.0 parts by mass relative to 1.0 part by mass of the 4-hydroxy-4'-benzyloxydiphenylsulfone.

Description

technical field [0001] The present invention relates to thermosensitive recording media and articles. Background technique [0002] The thermosensitive recording method using a thermosensitive recording medium has advantages over other recording methods in that processes such as color development (development) and fixing are not required, recording is available in a short time using an apparatus having a relatively simple configuration, and the The cost of spending is low. Therefore, heat-sensitive recording media are widely used in many fields such as POS fields such as perishable foods, box lunches, and cooked foods, fields such as copying of books and documents, fields of communication by such as facsimile, receipts such as by ticket vending machines and signed receipts, and the ticketing area of ​​luggage markers in the aviation industry. [0003] Compared with the past, due to the popularization of automatic ticket gates, the chances of the surface of public transport...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/333B41M5/327B41M5/337
CPCB41M5/3275B41M5/3336B41M5/3372B41M2205/04B41M2205/36B41M2205/40B41M5/323B41M5/44B41M2205/20
Inventor 野田和正清水健司门田康宽
Owner RICOH KK