JPH0237314B2 - - Google Patents
Info
- Publication number
- JPH0237314B2 JPH0237314B2 JP56080424A JP8042481A JPH0237314B2 JP H0237314 B2 JPH0237314 B2 JP H0237314B2 JP 56080424 A JP56080424 A JP 56080424A JP 8042481 A JP8042481 A JP 8042481A JP H0237314 B2 JPH0237314 B2 JP H0237314B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- sensitive recording
- recording material
- group
- weight
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 22
- 238000004040 coloring Methods 0.000 claims description 16
- 239000010410 layer Substances 0.000 claims description 14
- 239000011241 protective layer Substances 0.000 claims description 13
- -1 diester compound Chemical class 0.000 claims description 12
- 125000000217 alkyl group Chemical group 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 11
- 230000002378 acidificating effect Effects 0.000 claims description 9
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 description 18
- 239000000975 dye Substances 0.000 description 14
- 239000007788 liquid Substances 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 6
- 229920000609 methyl cellulose Polymers 0.000 description 6
- 239000001923 methylcellulose Substances 0.000 description 6
- 235000010981 methylcellulose Nutrition 0.000 description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 description 5
- 125000003277 amino group Chemical group 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 3
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical compound C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 description 2
- JWAZRIHNYRIHIV-UHFFFAOYSA-N 2-naphthol Chemical compound C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 description 2
- TUAMRELNJMMDMT-UHFFFAOYSA-N 3,5-xylenol Chemical compound CC1=CC(C)=CC(O)=C1 TUAMRELNJMMDMT-UHFFFAOYSA-N 0.000 description 2
- TXFPEBPIARQUIG-UHFFFAOYSA-N 4'-hydroxyacetophenone Chemical compound CC(=O)C1=CC=C(O)C=C1 TXFPEBPIARQUIG-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- FWQHNLCNFPYBCA-UHFFFAOYSA-N fluoran Chemical compound C12=CC=CC=C2OC2=CC=CC=C2C11OC(=O)C2=CC=CC=C21 FWQHNLCNFPYBCA-UHFFFAOYSA-N 0.000 description 2
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- LXCFILQKKLGQFO-UHFFFAOYSA-N methylparaben Chemical compound COC(=O)C1=CC=C(O)C=C1 LXCFILQKKLGQFO-UHFFFAOYSA-N 0.000 description 2
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- MGSRCZKZVOBKFT-UHFFFAOYSA-N thymol Chemical compound CC(C)C1=CC=C(C)C=C1O MGSRCZKZVOBKFT-UHFFFAOYSA-N 0.000 description 2
- 229920003169 water-soluble polymer Polymers 0.000 description 2
- LIZLYZVAYZQVPG-UHFFFAOYSA-N (3-bromo-2-fluorophenyl)methanol Chemical compound OCC1=CC=CC(Br)=C1F LIZLYZVAYZQVPG-UHFFFAOYSA-N 0.000 description 1
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical group C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- SJJCQDRGABAVBB-UHFFFAOYSA-N 1-hydroxy-2-naphthoic acid Chemical compound C1=CC=CC2=C(O)C(C(=O)O)=CC=C21 SJJCQDRGABAVBB-UHFFFAOYSA-N 0.000 description 1
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- IBHWREHFNDMRPR-UHFFFAOYSA-N 2,4,6-Trihydroxybenzoic acid Chemical compound OC(=O)C1=C(O)C=C(O)C=C1O IBHWREHFNDMRPR-UHFFFAOYSA-N 0.000 description 1
- 125000001731 2-cyanoethyl group Chemical group [H]C([H])(*)C([H])([H])C#N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- WJQOZHYUIDYNHM-UHFFFAOYSA-N 2-tert-Butylphenol Chemical compound CC(C)(C)C1=CC=CC=C1O WJQOZHYUIDYNHM-UHFFFAOYSA-N 0.000 description 1
- VDGGCSOLJOXSSF-UHFFFAOYSA-N 3,3-bis[4-(dimethylamino)phenyl]-2-benzofuran-1-one;6-(dimethylamino)-3,3-bis[4-(dimethylamino)phenyl]-2-benzofuran-1-one Chemical compound C1=CC(N(C)C)=CC=C1C1(C=2C=CC(=CC=2)N(C)C)C2=CC=CC=C2C(=O)O1.C1=CC(N(C)C)=CC=C1C1(C=2C=CC(=CC=2)N(C)C)C2=CC=C(N(C)C)C=C2C(=O)O1 VDGGCSOLJOXSSF-UHFFFAOYSA-N 0.000 description 1
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 1
- BOTKTAZUSYVSFF-UHFFFAOYSA-N 4-(2,4,4-trimethylpentan-2-yl)benzene-1,2-diol Chemical compound CC(C)(C)CC(C)(C)C1=CC=C(O)C(O)=C1 BOTKTAZUSYVSFF-UHFFFAOYSA-N 0.000 description 1
- 229940073735 4-hydroxy acetophenone Drugs 0.000 description 1
- NJESAXZANHETJV-UHFFFAOYSA-N 4-methylsalicylic acid Chemical compound CC1=CC=C(C(O)=O)C(O)=C1 NJESAXZANHETJV-UHFFFAOYSA-N 0.000 description 1
- QHPQWRBYOIRBIT-UHFFFAOYSA-N 4-tert-butylphenol Chemical compound CC(C)(C)C1=CC=C(O)C=C1 QHPQWRBYOIRBIT-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- LEJTZZKFAXFBRR-UHFFFAOYSA-N C(CCC)N(C1=CC=C(C=C1)C1(OC(=O)C2=CC=CC=C12)C1=CC=C(C=C1)N(CCCC)CCCC)CCCC.CN(C1=CC=C(C=C1)C1(OC(=O)C2=CC(=CC=C12)Cl)C1=CC=C(C=C1)N(C)C)C.CN(C1=CC=C(C=C1)C1(OC(=O)C2=CC(=CC=C12)N(CC)CC)C1=CC=C(C=C1)N(C)C)C Chemical compound C(CCC)N(C1=CC=C(C=C1)C1(OC(=O)C2=CC=CC=C12)C1=CC=C(C=C1)N(CCCC)CCCC)CCCC.CN(C1=CC=C(C=C1)C1(OC(=O)C2=CC(=CC=C12)Cl)C1=CC=C(C=C1)N(C)C)C.CN(C1=CC=C(C=C1)C1(OC(=O)C2=CC(=CC=C12)N(CC)CC)C1=CC=C(C=C1)N(C)C)C LEJTZZKFAXFBRR-UHFFFAOYSA-N 0.000 description 1
- VRKRAINBQJWFTQ-UHFFFAOYSA-N COC1=C(C=CC(=C1)N(C)C)C1(OC(=O)C2=CC=CC=C12)C1=C(C=C(C(=C1)C)Cl)O.OC1=C(C=CC(=C1)N(CC)CC)C1(OC(=O)C2=CC=CC=C12)C1=C(C=CC(=C1)C)OC Chemical compound COC1=C(C=CC(=C1)N(C)C)C1(OC(=O)C2=CC=CC=C12)C1=C(C=C(C(=C1)C)Cl)O.OC1=C(C=CC(=C1)N(CC)CC)C1(OC(=O)C2=CC=CC=C12)C1=C(C=CC(=C1)C)OC VRKRAINBQJWFTQ-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- LNYGGKYWZSLKCZ-UHFFFAOYSA-N OC1=C(C=CC(=C1)N(C)C)C1(OC(=O)C2=CC=CC=C12)C1=C(C=CC(=C1)[N+](=O)[O-])OC.OC1=C(C=CC(=C1)N(C)C)C1(OC(=O)C2=CC=CC=C12)C1=C(C=CC(=C1)Cl)OC Chemical compound OC1=C(C=CC(=C1)N(C)C)C1(OC(=O)C2=CC=CC=C12)C1=C(C=CC(=C1)[N+](=O)[O-])OC.OC1=C(C=CC(=C1)N(C)C)C1(OC(=O)C2=CC=CC=C12)C1=C(C=CC(=C1)Cl)OC LNYGGKYWZSLKCZ-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 239000005844 Thymol Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- IMHDGJOMLMDPJN-UHFFFAOYSA-N biphenyl-2,2'-diol Chemical group OC1=CC=CC=C1C1=CC=CC=C1O IMHDGJOMLMDPJN-UHFFFAOYSA-N 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 229920003064 carboxyethyl cellulose Polymers 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011981 development test Methods 0.000 description 1
- 125000004663 dialkyl amino group Chemical group 0.000 description 1
- AAVCZPRLVZWKRF-UHFFFAOYSA-N dioctadecyl 7-oxabicyclo[4.1.0]heptane-3,4-dicarboxylate Chemical compound C1C(C(=O)OCCCCCCCCCCCCCCCCCC)C(C(=O)OCCCCCCCCCCCCCCCCCC)CC2OC21 AAVCZPRLVZWKRF-UHFFFAOYSA-N 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229940074391 gallic acid Drugs 0.000 description 1
- 235000004515 gallic acid Nutrition 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 150000003951 lactams Chemical class 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 235000010270 methyl p-hydroxybenzoate Nutrition 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229960001553 phloroglucinol Drugs 0.000 description 1
- QCDYQQDYXPDABM-UHFFFAOYSA-N phloroglucinol Chemical compound OC1=CC(O)=CC(O)=C1 QCDYQQDYXPDABM-UHFFFAOYSA-N 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229940079877 pyrogallol Drugs 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 229960000790 thymol Drugs 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- AAAQKTZKLRYKHR-UHFFFAOYSA-N triphenylmethane Chemical compound C1=CC=CC=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 AAAQKTZKLRYKHR-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
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
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
- B41M5/423—Intermediate, backcoat, or covering layers characterised by non-macromolecular compounds, e.g. waxes
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Description
本発明は感熱記録材料、さらに詳しくは、通
常、無色又は淡色のロイコ染料と該ロイコ染料を
熱時発色させ得る酸性物質を主成分として含有す
る感熱発色層を支持体上に形成させた構造の感熱
記録材料の改良に関する。
感熱記録材料は、加熱によつて発色するいわゆ
る感熱発色層を紙、合成紙、樹脂フイルムなどの
支持体上に形成した構造の記録材料であつて、そ
の発色のための加熱には熱ヘツドや熱ペン等が用
いられる。このような記録材料は、図書、文書な
どの複写に用いられる他、電子計算機、フアクシ
ミリ、計算機などの出力記録や、ラベルなどの分
野において広く利用されている。
このような感熱記録材料においては、加熱以外
にも、圧力を加えた場合、例えば、ひつかいた
り、こすつたりした場合に発色する（圧力発色）
という欠点があり、実用上重大な支障をきたすこ
とが多くある。この欠点を克服するため、ワツク
ス及び／又は殿粉を含有する保護層を感熱発色層
表面に設けることが提案されている（特開昭48−
30944号公報、特開昭48−31958号公報、特公昭51
−5947号公報）が、その圧力発色防止効果は未だ
充分とはいえない。
本発明者らは、上記した問題を解決すべく研究
を重ねた結果、下記の一般式(1)で示されるジエス
テル化合物を含有する保護層を感熱発色層の表面
上に設けることにより圧力発色のない感熱記録材
料が得られることを見出し本発明を完成するに到
つた。
（式中、R1及びR2は炭素数10〜30のアルキル基
である）
すなわち、本発明によれば、ロイコ染料と該ロ
イコ染料と加熱により反応して発色させる酸性物
質を含有する感熱発色層を支持体上に設けた構造
の感熱記録材料において、
一般式
（式中、R1及びR2は炭素数10〜30のアルキル基
である）
で表わされるジエステル化合物を含有する保護層
を該感熱発色層の表面上に設けたことを特徴とす
る感熱記録材料が提供される。
本発明においては、保護層中に前記一般式で表
わされるジエステル化合物を含有させるが、かか
るジエステル化合物の具体例としては、R1及び
R2が炭素数10〜30のアルキル基、たとえばラウ
リル基、ミリスチル基、ステアリル基などの高級
アルキル基であるものが挙げられる。
本発明において用いる保護層は、前記一般式(1)
で表わされるジエステル化合物と共に水溶性高分
子を含むことができるが、この場合の水溶性高分
子として、例えば、次のような種々のものが挙げ
られる。
ポリビニルアルコール、カルボキシメチルセル
ロース、デンプン、メチルセルロース、スチレン
無水マレイン酸共重合体、アクリル酸エステルエ
マルジヨン等。
保護層中における前記一般式(1)のジエステル化
合物の含有量は保護層全重量に対し１〜60％であ
ることが好ましく、特に10〜30％の範囲が効果的
である。保護層の厚みは通常0.3〜3μ、好ましく
は0.5〜1μである。
次に本発明で用いるロイコ染料及び酸性物質の
具体例について示す。
(A) ロイコ染料
ロイコ染料としては、通常無色又は淡色の下
記に示す種々の染料のロイコ体が適用される。
(イ) 下記一般式で示されるトリフエニルメタン
系染料のロイコ化合物：
（式中、RX，RYおよびRZは水素、水酸基、
ハロゲン、アルキル基、ニトロ基、アミノ
基、ジアルキルアミノ基、モノアルキル基、
アリル基である。）
上記ロイコ化合物の具体例は次の通りであ
る。
３，３−ビス（ｐ−ジメチルアミノフエニ
ル）−フタリド
３，３−ビス（ｐ−ジメチルアミノフエニ
ル）−６−ジメチルアミノフタリド（別名ク
リスタルバイオレツトラクトン）
３，３−ビス（ｐ−ジメチルアミノフエニ
ル）−６−ジエチルアミノフタリド
３，３−ビス（ｐ−ジメチルアミノフエニ
ル）−６−クロルフタリド
３，３−ビス（ｐ−ジブチルアミノフエニ
ル）フタリド
(ロ) 下記一般式で表わされるフルオラン系染料
のロイコ化合物：
式中、RX，RYおよびRZは上記(イ)の場合と
同じである。
上記化合物の具体例は次の通りである。
３−シクロヘキシルアミノ−６−クロルフ
ルオラン
３−（Ｎ，Ｎ−ジエチルアミノ）−５−メチ
ル−７−（Ｎ，Ｎ−ジベンジルアミノ）フル
オラン
３−ジメチルアミノ−５，７−ジメチルフ
ルオラン
３−ジメチルアミノ−７−メチルフルオラ
ン
３−ジエチルアミノ−７，８−ベンズフル
オラン
(ハ) フルオラン系染料のロイコ化合物：
３−ジエチルアミノ−６−メチル−７−ク
ロルフルオラン
３−ピロリジノ−６−メチル−７−アニリ
ノフルオラン
２−｛Ｎ−（3′−トリフルオルメチルフエニ
ル）アミノ｝−６−ジエチルアミノフルオラ
ン
２−｛３，６−ビス（ジエチルアミノ）−９
−（０−クロルアニリノ）キサンチル安息香
酸ラクタム｝
(ニ) 下記一般式で表わされるラクトン化合物：
式中、R1およびR2は水素、低級アルキル
基、置換または非置換アルアルキル基、置換
または非置換のフエニル基、シアノエチル
基、またはβ−ハロゲン化エチル基を表わす
かまたは、R1とR2が結合して（−CH2）−4，（−
CH2）−5または（−CH2）−2O（−CH2）−2を表わ
し、R3およびR4は水素、低級アルキル基、
アルキル基、アミノ基またはフエニル基を表
わし、R3とR4のいずれか１つは水素であり、
X1，X2およびX3は水素、低級アルキル基、
低級アルコキシル基、ハロゲン原子、ハロゲ
ン化メチル基、ニトロ基、アミノ基、また置
換されたアミノ基を表わし、X4は水素、ハ
ロゲン、低級アルキル基または低級アルコキ
シル基を表わし、ｎは０または１〜４の整数
を表わす。
上記化合物の具体例は次の通りである。
３−（2′−ヒドロキシ−4′−ジメチルアミ
ノフエニル）−３−（2′−メトキシ−5′−クロ
ルフエニル）フタリド
３−（2′−ヒドロキシ−4′−ジメチルアミ
ノフエニル）−３−（2′−メトキシ−5′−ニト
ロフエニル）フタリド
３−（2′−ヒドロキシ−4′−ジエチルアミ
ノフエニル）−３−（2′−メトキシ−５−メチ
ルフエニル）フタリド
３−（2′−メトキシ−4′−ジメチルアミノ
フエニル）−３−（2′−ヒドロキシ−4′−クロ
ル−5′−メチルフエニル）フタリド。
(B) 酸性物質
前記したロイコ染料に加熱時反応してこれを
発色させる酸性物質としては下記に示す種々の
ものが適用される。
(イ) 有機、無機酸
ホウ酸、シユウ酸、マレイン酸、酒石酸、
クエン酸、コハク酸、安息香酸、ステアリン
酸、没食子酸、サリチル酸、１−ヒドロキシ
−２−ナフトエ酸、ｏ−ヒドロキシ安息香
酸、２−ヒドロキシ−ｐ−トルイル酸。
(ロ) フエノール性物質
３，５−キシレノール、チモール、ｐ−
tert−ブチルフエノール、４−ヒドロキシフ
エノキシド、メチル−４−ヒドロキシベンゾ
エート、４−ヒドロキシアセトフエノン、α
−ナフトール、β−ナフトール、カテコー
ル、レゾルシン、ヒドロキノン、４−tert−
オクチルカテコール、４，４−sec−ブチリ
デンフエノール、２，2′−ジヒドロキシジフ
エニル、２，2′−メチレンビス（４−メチル
−６−tert−ブチルフエノール）、２，２−
ビス（４−ヒドロキシフエニル）プロパン、
４，４−イソプロピリデン−ビス（２−tert
−ブチルフエノール）、４，４−sec−ブチリ
デンジフエノール、ピロガロール、フロログ
ルシン、フロログルシンカルボン酸。
本発明の感熱記録材料には、感熱層中に、さら
に、必要に応じ、填料として、炭酸カルシウム、
シリカ、アルミナ、マグネシア、タルク、カオリ
ン、硫酸バリウム、尿素−ホルマリン樹脂、スチ
レン樹脂等の微粉末を添加して発色画像の鮮明性
及びサーマルヘツドの走行性を一層改善すること
ができる。
上記したロイコ染料、酸性物質を合成紙、合成
樹脂フイルム、金属ラミネート、紙等の支持体上
に保持させるべく用いる結着剤としては特に制限
はなく、慣用の結着剤を使用することができる。
例えば、ゼラチン、デンプン、ヒドロキシエチル
セルロース、ポリアクリル酸、カルボキシエチル
セルロース、メトキシセルロース、ポリビニルア
ルコール、ポリビニルピロリドン等が挙げられ
る。
本発明の感熱記録材料は慣用の方法により製造
することができ、例えば、適宜の保護コロイド物
質、界面活性剤を含有するロイコ染料分散液、酸
性物質分散液、一般式(1)のジエステル化合物含有
分散液等各種分散液をボールミル、アトライタ
ー、サンドミルなどの分散機により予め調整し、
次に結着剤を加えて感熱発色層形成液を調整し、
これを支持体上に塗布、乾操の後、得られた感熱
発色層に対し上記ジエステル化合物含有分散液に
結着剤を加えた塗布液を塗布、乾燥することによ
り製造することができる。
次に、本発明を実施例によりさらに詳細に説明
する。
実施例 １
下記成分をそれぞれボールミルを用いて24時間
粉砕分散して、分散液Ａ、Ｂ及びＣをそれぞれ調
製した。
〔分散液Ａ〕
２−｛Ｎ−（3′−トリフルオルメチルフエニル）ア
ミン｝−６−ジエチルアミノフルオラン 150重量部
５％ポリビニルアルコール水溶液 150重量部
水 200 〃
〔分散液Ｂ〕
２，２−ビス（ｐ−ヒドロキシフエニル）プロパ
ン 120重量部
５％ポリビニルアルコール水溶液 120 〃
水 160 〃
〔分散液Ｃ〕
４，５−エポキシ−１，２−ビス−ステアリルオ
キシカルボニル−シクロヘキサン 150重量部
５％メチルセルロース水溶液 150 〃
水 200 〃
上記のようにして得た分散液Ａを１重量部、分
散液Ｂを２重量部、及び20％ポリビニルアルコー
ル水溶液を１重量部混合して盛熱発色層形成液を
調整し、これを基準坪量53ｇ／m2の市販上質紙表
面に乾燥時塗布量が６〜７ｇ／m2となるようワイ
ヤーバーにより塗布し、乾燥後感熱記録シートを
得た。次に分散液Ｃを９重量部、５％メチルセル
ロース水溶液を１重量部混合して得た保護層形成
液を、上記の感熱記録シートの感熱発色層上に乾
燥塗布量が0.5ｇ／m2となるように塗布し、乾燥
後感熱記録材料を得た。
実施例 ２
保護層形成液として分散液Ｃを１重量部、５％
メチルセルロース水溶液を１重量部混合したもの
を用いた以外は実施例１と全て同様にして感熱記
録材料を得た。
実施例 ３
保護層形成液として分散液Ｃを１重量部、５％
メチルセルロース水溶液を４重量部混合したもの
を用いた以外は実施例１と全て同様にして感熱記
録材料を得た。
比較例 １
分散液Ｃに代え下記の成分を粉砕分散して得た
分散液Ｄを用いた以外は実施例１と全く同様にし
て感熱記録材料を得た。
Ｄ液
パラフインワツクス 150重量部
５％メチルセルロース水溶液 150 〃
水 200重量部
比較例 ２
実施例１の感熱発色層形成液に更に分散液Ｃを
0.3重量部混合し、これを実施例１と同様にして
上質紙に塗布、乾燥して感熱記録材料を得た。
以上のようにして得た実施例１〜３、比較例
１、２及び保護層を設けない前記感熱記録シート
について圧力発色テストを行つた。圧力発色テス
トは、0.5mm×0.5mmの針に300ｇの荷重をかけて
被テストサンプルを引掻き、その時の発色濃度を
マクベス濃度計を用いて測定することにより行つ
た。テスト結果を表−１に示す。
The present invention relates to a heat-sensitive recording material, more specifically, a heat-sensitive recording material having a structure in which a heat-sensitive coloring layer containing as a main component a usually colorless or light-colored leuco dye and an acidic substance capable of coloring the leuco dye when heated is formed on a support. Concerning the improvement of heat-sensitive recording materials. A thermosensitive recording material is a recording material with a structure in which a so-called thermosensitive coloring layer that develops color when heated is formed on a support such as paper, synthetic paper, or resin film. A thermal pen or the like is used. Such recording materials are used not only for copying books, documents, etc., but also for recording the output of electronic computers, facsimiles, calculators, etc., and are widely used in fields such as labels. In addition to heating, such heat-sensitive recording materials develop color when pressure is applied, for example, when they are scratched or rubbed (pressure coloration).
This drawback often causes serious problems in practical use. In order to overcome this drawback, it has been proposed to provide a protective layer containing wax and/or starch on the surface of the heat-sensitive coloring layer (Japanese Unexamined Patent Application Publication No. 1983-1970).
Publication No. 30944, Japanese Unexamined Patent Publication No. 1983-31958, Special Publication No. 1973
-5947), but its effect of preventing color development under pressure is still not sufficient. As a result of repeated research to solve the above-mentioned problems, the present inventors have found that pressure coloring can be improved by providing a protective layer containing a diester compound represented by the following general formula (1) on the surface of the heat-sensitive coloring layer. The present invention was completed by discovering that a heat-sensitive recording material with no heat-sensitive recording material can be obtained. (In the formula, R 1 and R 2 are alkyl groups having 10 to 30 carbon atoms.) That is, according to the present invention, a thermosensitive coloring agent containing a leuco dye and an acidic substance that reacts with the leuco dye to develop color by heating. In a heat-sensitive recording material having a structure in which a layer is provided on a support, the general formula (In the formula, R 1 and R 2 are alkyl groups having 10 to 30 carbon atoms.) A heat-sensitive recording material characterized in that a protective layer containing a diester compound represented by the formula is provided on the surface of the heat-sensitive coloring layer. is provided. In the present invention, a diester compound represented by the above general formula is contained in the protective layer, and specific examples of such a diester compound include R 1 and
Examples include those in which R 2 is an alkyl group having 10 to 30 carbon atoms, such as a higher alkyl group such as a lauryl group, myristyl group, or stearyl group. The protective layer used in the present invention has the general formula (1)
A water-soluble polymer can be included together with the diester compound represented by, and examples of the water-soluble polymer in this case include the following. Polyvinyl alcohol, carboxymethyl cellulose, starch, methyl cellulose, styrene maleic anhydride copolymer, acrylic ester emulsion, etc. The content of the diester compound represented by the general formula (1) in the protective layer is preferably 1 to 60% based on the total weight of the protective layer, and a range of 10 to 30% is particularly effective. The thickness of the protective layer is usually 0.3-3μ, preferably 0.5-1μ. Next, specific examples of the leuco dye and acidic substance used in the present invention will be shown. (A) Leuco dye As the leuco dye, the leuco forms of the various dyes shown below, which are usually colorless or light-colored, are used. (a) Leuco compound of triphenylmethane dye represented by the following general formula: (In the formula, R X , R Y and R Z are hydrogen, hydroxyl group,
Halogen, alkyl group, nitro group, amino group, dialkylamino group, monoalkyl group,
It is an allyl group. ) Specific examples of the above leuco compounds are as follows. 3,3-bis(p-dimethylaminophenyl)-phthalide 3,3-bis(p-dimethylaminophenyl)-6-dimethylaminophthalide (also known as crystal violet lactone) 3,3-bis(p- Dimethylaminophenyl)-6-diethylaminophthalide 3,3-bis(p-dimethylaminophenyl)-6-chlorophthalide 3,3-bis(p-dibutylaminophenyl)phthalide (b) Represented by the following general formula Leuco compounds of fluoran dyes: In the formula, R X , R Y and R Z are the same as in (a) above. Specific examples of the above compounds are as follows. 3-Cyclohexylamino-6-chlorofluorane 3-(N,N-diethylamino)-5-methyl-7-(N,N-dibenzylamino)fluorane 3-dimethylamino-5,7-dimethylfluorane 3- Dimethylamino-7-methylfluorane 3-diethylamino-7,8-benzfluorane (c) Leuco compound of fluoran dye: 3-diethylamino-6-methyl-7-chlorofluorane 3-pyrrolidino-6-methyl- 7-anilinofluorane 2-{N-(3'-trifluoromethylphenyl)amino}-6-diethylaminofluorane 2-{3,6-bis(diethylamino)-9
-(0-chloroanilino)xantylbenzoic acid lactam} (d) Lactone compound represented by the following general formula: In the formula, R 1 and R 2 represent hydrogen, a lower alkyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted phenyl group, a cyanoethyl group, or a β-halogenated ethyl group, or R 1 and R 2 combine to form (-CH 2 )- 4 , (-
CH2 ) -5 or ( -CH2 ) -2O ( -CH2 ) -2 , R3 and R4 are hydrogen, a lower alkyl group,
represents an alkyl group, an amino group or a phenyl group, and either one of R 3 and R 4 is hydrogen,
X 1 , X 2 and X 3 are hydrogen, lower alkyl group,
It represents a lower alkoxyl group, a halogen atom, a halogenated methyl group, a nitro group, an amino group, or a substituted amino group, X 4 represents hydrogen, a halogen, a lower alkyl group, or a lower alkoxyl group, and n is 0 or 1- Represents an integer of 4. Specific examples of the above compounds are as follows. 3-(2'-hydroxy-4'-dimethylaminophenyl)-3-(2'-methoxy-5'-chlorophenyl)phthalide 3-(2'-hydroxy-4'-dimethylaminophenyl)-3- (2'-Methoxy-5'-nitrophenyl)phthalide 3-(2'-hydroxy-4'-diethylaminophenyl)-3-(2'-methoxy-5-methylphenyl)phthalide 3-(2'-methoxy-4 '-dimethylaminophenyl)-3-(2'-hydroxy-4'-chloro-5'-methylphenyl)phthalide. (B) Acidic Substances The following various acidic substances can be used as acidic substances that react with the above-mentioned leuco dye when heated to cause it to develop color. (a) Organic and inorganic acids boric acid, oxalic acid, maleic acid, tartaric acid,
Citric acid, succinic acid, benzoic acid, stearic acid, gallic acid, salicylic acid, 1-hydroxy-2-naphthoic acid, o-hydroxybenzoic acid, 2-hydroxy-p-toluic acid. (b) Phenolic substances 3,5-xylenol, thymol, p-
tert-butylphenol, 4-hydroxyphenoxide, methyl-4-hydroxybenzoate, 4-hydroxyacetophenone, α
-Naphthol, β-naphthol, catechol, resorcinol, hydroquinone, 4-tert-
Octylcatechol, 4,4-sec-butylidenephenol, 2,2'-dihydroxydiphenyl, 2,2'-methylenebis(4-methyl-6-tert-butylphenol), 2,2-
bis(4-hydroxyphenyl)propane,
4,4-isopropylidene-bis(2-tert
-butylphenol), 4,4-sec-butylidene diphenol, pyrogallol, phloroglucin, phloroglucin carboxylic acid. The heat-sensitive recording material of the present invention further contains calcium carbonate as a filler in the heat-sensitive layer, if necessary.
By adding fine powders of silica, alumina, magnesia, talc, kaolin, barium sulfate, urea-formalin resin, styrene resin, etc., the clarity of the colored image and the runnability of the thermal head can be further improved. There is no particular restriction on the binder used to hold the above-mentioned leuco dye or acidic substance on a support such as synthetic paper, synthetic resin film, metal laminate, paper, etc., and any conventional binder can be used. .
Examples include gelatin, starch, hydroxyethylcellulose, polyacrylic acid, carboxyethylcellulose, methoxycellulose, polyvinyl alcohol, polyvinylpyrrolidone, and the like. The heat-sensitive recording material of the present invention can be produced by a conventional method, for example, a leuco dye dispersion containing an appropriate protective colloid substance and a surfactant, an acidic substance dispersion, and a diester compound containing the general formula (1). Various dispersions such as dispersions are prepared in advance using a dispersion machine such as a ball mill, attritor, or sand mill.
Next, add a binder to adjust the thermosensitive coloring layer forming liquid,
After coating this on a support and drying, it can be produced by coating the resulting thermosensitive coloring layer with a coating solution prepared by adding a binder to the diester compound-containing dispersion and drying. Next, the present invention will be explained in more detail with reference to Examples. Example 1 Dispersions A, B and C were prepared by pulverizing and dispersing the following components for 24 hours using a ball mill. [Dispersion A] 2-{N-(3'-trifluoromethylphenyl)amine}-6-diethylaminofluorane 150 parts by weight 5% polyvinyl alcohol aqueous solution 150 parts by weight Water 200 [Dispersion B] 2,2 -Bis(p-hydroxyphenyl)propane 120 parts by weight 5% polyvinyl alcohol aqueous solution 120 Water 160 [Dispersion C] 4,5-epoxy-1,2-bis-stearyloxycarbonyl-cyclohexane 150 parts by weight 5% Methyl cellulose aqueous solution 150 〃 Water 200 〃 1 part by weight of dispersion A obtained as above, 2 parts by weight of dispersion B, and 1 part by weight of 20% polyvinyl alcohol aqueous solution were mixed to prepare a hot coloring layer forming liquid. This was prepared and applied to the surface of a commercially available high-quality paper having a standard basis weight of 53 g/m 2 using a wire bar so that the dry coating amount was 6 to 7 g/m 2 to obtain a heat-sensitive recording sheet after drying. Next, a protective layer forming liquid obtained by mixing 9 parts by weight of Dispersion C and 1 part by weight of a 5% methylcellulose aqueous solution was applied onto the heat-sensitive coloring layer of the heat-sensitive recording sheet at a dry coating amount of 0.5 g/m 2 . After drying, a heat-sensitive recording material was obtained. Example 2 1 part by weight of dispersion C, 5% as a protective layer forming liquid
A heat-sensitive recording material was obtained in the same manner as in Example 1 except that 1 part by weight of an aqueous methylcellulose solution was used. Example 3 1 part by weight of dispersion C, 5% as a protective layer forming liquid
A heat-sensitive recording material was obtained in the same manner as in Example 1 except that 4 parts by weight of an aqueous methylcellulose solution was used. Comparative Example 1 A heat-sensitive recording material was obtained in exactly the same manner as in Example 1, except that Dispersion D, which was obtained by pulverizing and dispersing the following components, was used in place of Dispersion C. Liquid D paraffin wax 150 parts by weight 5% methylcellulose aqueous solution 150 Water 200 parts by weight Comparative example 2 Dispersion C was added to the thermosensitive coloring layer forming liquid of Example 1.
0.3 parts by weight was mixed, and this was applied to high-quality paper in the same manner as in Example 1 and dried to obtain a heat-sensitive recording material. A pressure coloring test was conducted on Examples 1 to 3, Comparative Examples 1 and 2, and the heat-sensitive recording sheet without a protective layer, which were obtained as described above. The pressure color development test was conducted by scratching the test sample with a 0.5 mm x 0.5 mm needle under a load of 300 g, and measuring the color density at that time using a Macbeth densitometer. The test results are shown in Table-1.
【表】
表−１の結果から明らかなように本発明による
感熱記録材料は顕著な圧力発色防止効果を示す。
また、実施例１〜３の記録材料について、サーマ
ルプリンターによる印字を行つたところ、すぐれ
た発色濃度を示し且つヘツドマツチング性もすぐ
れていた。[Table] As is clear from the results in Table 1, the heat-sensitive recording material according to the present invention exhibits a remarkable effect of preventing pressure coloring.
Further, when the recording materials of Examples 1 to 3 were printed using a thermal printer, they showed excellent color density and excellent head matching properties.
Claims (1)
して発色させる酸性物質を含有する感熱発色層を
支持体上に設けた構造の感熱記録材料において、 一般式 （式中、R1及びR2は炭素数10〜30のアルキル基
である） で表わされるジエステル化合物を含有する保護層
を該感熱発色層の表面上に設けたことを特徴とす
る感熱記録材料。[Scope of Claims] 1. A heat-sensitive recording material having a structure in which a heat-sensitive coloring layer containing a leuco dye and an acidic substance that reacts with the leuco dye to develop color by heating is provided on a support, (In the formula, R 1 and R 2 are alkyl groups having 10 to 30 carbon atoms.) A heat-sensitive recording material characterized in that a protective layer containing a diester compound represented by the formula is provided on the surface of the heat-sensitive coloring layer. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56080424A JPS57195689A (en) | 1981-05-27 | 1981-05-27 | Heat-sensitive recording material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56080424A JPS57195689A (en) | 1981-05-27 | 1981-05-27 | Heat-sensitive recording material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57195689A JPS57195689A (en) | 1982-12-01 |
| JPH0237314B2 true JPH0237314B2 (en) | 1990-08-23 |
Family
ID=13717899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56080424A Granted JPS57195689A (en) | 1981-05-27 | 1981-05-27 | Heat-sensitive recording material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57195689A (en) |
-
1981
- 1981-05-27 JP JP56080424A patent/JPS57195689A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57195689A (en) | 1982-12-01 |
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