Claims
- 1. A heat-sensitive recording material comprising a support and color-developing layer, wherein said color-developing layer comprises a colorless leuco dyestuff and the combination of a saturated higher fatty acid iron salt having 16-35 carbon atoms with a polyvalent phenolic derivative represented by the following general formula (I): ##STR3## where R represents an alkyl group having 18-35 carbon atoms, and n represents an integer from 2 to 3, said colorless leuco dyestuff being used in an amount of at most 25% by weight based on said polyvalent phenolic derivative.
- 2. The heat-sensitive recording material according to claim 1, wherein said polyvalent phenolic derivative represented by the formula (I) is stearyl gallate.
- 3. The heat-sensitive recording material according to claim 1 wherein said colorless leuco dyestuff is at least one substance selected from the group consisting of triphenyl methane, leuco dyestuffs, fluoran leuco dyestuffs, azaphthalide leuco dyestuffs and fluorene leuco dyestuffs.
- 4. The heat-sensitive recording material according to claim 3, wherein one of said fluoran leuco dyestuffs is at least one substance selected from the group consisting of 3-diethylamino-7-(o-chloroanilino)fluoran and 3-(N-ethyl-p-toluidino-6-methylanilinofluoran.
- 5. The heat-sensitive recording material according to claim 1, wherein said color-developing layer comprises 1-6 parts by weight of polyvalent phenolic derivative, 2-15 parts by weight of filler and 0.2-1.2 parts by weight of said leuco dyestuff, based on 1-6 parts by weight of saturated-higher fatty acid iron salt, and 0.5-4 parts by weight of binder in total solid content.
- 6. The heat-sensitive recording material according to claim 1, wherein said color-developing layer lies on the support.
Priority Claims (1)
Number |
Date |
Country |
Kind |
60-246063 |
Nov 1985 |
JPX |
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Parent Case Info
This is a continuation of application Ser. No. 916,190, filed Oct. 7, 1986, now abandoned.
Foreign Referenced Citations (3)
Number |
Date |
Country |
0176196 |
Oct 1982 |
JPX |
0063192 |
Apr 1985 |
JPX |
0083885 |
May 1985 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
916190 |
Oct 1986 |
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