JPH0355319B2 - - Google Patents
Info
- Publication number
- JPH0355319B2 JPH0355319B2 JP55166555A JP16655580A JPH0355319B2 JP H0355319 B2 JPH0355319 B2 JP H0355319B2 JP 55166555 A JP55166555 A JP 55166555A JP 16655580 A JP16655580 A JP 16655580A JP H0355319 B2 JPH0355319 B2 JP H0355319B2
- Authority
- JP
- Japan
- Prior art keywords
- recording paper
- paper
- thermal
- recording
- coloring material
- 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
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 11
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 11
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 12
- 238000012546 transfer Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 239000000975 dye Substances 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 description 6
- 239000000049 pigment Substances 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000012943 hotmelt Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 3
- 241000700159 Rattus Species 0.000 description 3
- 125000002091 cationic group Chemical group 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000986 disperse dye Substances 0.000 description 3
- 239000000976 ink Substances 0.000 description 3
- 229920000609 methyl cellulose Polymers 0.000 description 3
- 239000001923 methylcellulose Substances 0.000 description 3
- 235000010981 methylcellulose Nutrition 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 238000000859 sublimation Methods 0.000 description 3
- 230000008022 sublimation Effects 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- -1 nitro, azo Chemical group 0.000 description 2
- 239000001254 oxidized starch Substances 0.000 description 2
- 235000013808 oxidized starch Nutrition 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- TVBNRFCUTVWHQB-UHFFFAOYSA-N 1-anilino-4-(methylamino)anthracene-9,10-dione Chemical compound C1=2C(=O)C3=CC=CC=C3C(=O)C=2C(NC)=CC=C1NC1=CC=CC=C1 TVBNRFCUTVWHQB-UHFFFAOYSA-N 0.000 description 1
- FOQABOMYTOFLPZ-UHFFFAOYSA-N 2-[n-ethyl-4-[(4-nitrophenyl)diazenyl]anilino]ethanol Chemical compound C1=CC(N(CCO)CC)=CC=C1N=NC1=CC=C([N+]([O-])=O)C=C1 FOQABOMYTOFLPZ-UHFFFAOYSA-N 0.000 description 1
- BBFRYSKTTHYWQZ-UHFFFAOYSA-N 4-anilino-3-nitro-n-phenylbenzenesulfonamide Chemical compound [O-][N+](=O)C1=CC(S(=O)(=O)NC=2C=CC=CC=2)=CC=C1NC1=CC=CC=C1 BBFRYSKTTHYWQZ-UHFFFAOYSA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004368 Modified starch Substances 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- JBBPTUVOZCXCSU-UHFFFAOYSA-L dipotassium;2',4',5',7'-tetrabromo-4,7-dichloro-3-oxospiro[2-benzofuran-1,9'-xanthene]-3',6'-diolate Chemical compound [K+].[K+].O1C(=O)C(C(=CC=C2Cl)Cl)=C2C21C1=CC(Br)=C([O-])C(Br)=C1OC1=C(Br)C([O-])=C(Br)C=C21 JBBPTUVOZCXCSU-UHFFFAOYSA-L 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000013054 paper strength agent Substances 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- AQHHHDLHHXJYJD-UHFFFAOYSA-N propranolol Chemical compound C1=CC=C2C(OCC(O)CNC(C)C)=CC=CC2=C1 AQHHHDLHHXJYJD-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009988 textile finishing Methods 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- FKVXIGHJGBQFIH-UHFFFAOYSA-K trisodium 5-amino-3-[[4-[4-[(7-amino-1-hydroxy-3-sulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]-4-hydroxynaphthalene-2,7-disulfonate Chemical compound C1=CC(=CC=C1C2=CC=C(C=C2)N=NC3=C(C=C4C=CC(=CC4=C3[O-])N)S(=O)(=O)O)N=NC5=C(C6=C(C=C(C=C6C=C5S(=O)(=O)O)S(=O)(=O)[O-])N)[O-].[Na+].[Na+].[Na+] FKVXIGHJGBQFIH-UHFFFAOYSA-K 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000003232 water-soluble binding agent Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
Description
本発明は熱記録紙に関するもので、さらに詳し
くは色材を塗布した基材を使用し、該色材層と記
録紙とを接触せしめサーマルヘツド等による加熱
により色材を記録紙に転移させる熱記録方式にお
ける記録紙に関するものである。
一般に熱記録方式としては、加熱により物理的
又は化学的変化を起して発色する記録層を設けた
感熱記録紙にサーマルヘツドを接触させ、この感
熱記録紙に所要の発色記録を得る方式が普及して
いる。しかし、この記録方式は、使用する感熱記
録紙が保存時や取扱時の不可避の圧力や熱などに
よつて発色汚染が起り易く、又製造コストが高い
という欠点があつた。
従つて、上記の熱記録方式に代るものとして特
開昭51−15446号公報に於て、常温では固体又は
半固体状の色材を紙、樹脂フイルム等の基材上に
塗布しておき、該基材上の色材と記録紙とを接触
せしめ、サーマルヘツドにより前記基材上の色材
を加熱して選択的に前記記録紙に転移させて記録
を行なう方式が提案されている。
この記録方式に於て、基材に塗布した色材が記
録紙へ転移するのは、色材又は色材を含有するバ
インダーが熱によつて熔融、蒸発、又は昇華し、
これに伴つて記録紙への粘着、染着等が起るため
であり、熱記録のタイプは、熱熔融型と昇華型に
大別される。ここで使用する色材は、一般の染料
をワツクス類等のバインダーに分散したもので、
普通の状態では記録紙と接触しても色材の転移が
起らないが、例えば60〜500℃の加熱により始め
て色材の転移が起るものである。この種の色材に
用いる染料としては、カチオン染料、分散染料、
油溶性染料等があり、例えば昇華温度が60℃〜
300℃の昇華性染料としては、ニトロ系、アゾ系、
キノリン系、アントラキノン系等の分散染料が好
適である。従つて、この記録方式は記録紙として
普通紙を使用できる点を特長としている。
しかしながら、普通紙を使用した場合、特に染
着による場合には記録の色濃度が低く、又、経時
的な退色現象も著しいために、この記録方式に適
合する記録紙の開発が要望されている。
このため、特開昭55−42824号公報においては、
熱熔融型タイプの記録紙において、水溶性結着剤
と顔料とからなる塗布層を設けることが提案され
ているが、メチルセルロース、ポリビニルアルコ
ール等ここに記載された結着剤では、やはり色濃
度が十分ではない。
本発明者らは、叙上の如き欠点のない記録紙を
開発するために鋭意研究の結果、ポリビニルピロ
リドンを含む塗布層を設けることによつて、極め
て鮮明且つ堅牢な記録が得られることを見出し、
本発明を完成するに至つた。
ポリビニルピロリドンは水溶解性の極めて良好
な高分子であつて、透明な皮膜を形成し、医薬
品、化粧品、接着剤、繊維仕上剤への応用が知ら
れている。本発明の熱記録紙はこのポリビニルピ
ロリドンの水溶液又は溶剤溶液に、炭酸カルシウ
ム等の一般顔料を混合した塗料を一般紙に７〜
15g／m2塗工して調製する。熱記録紙はポリビニ
ルピロリドン単独の塗工によつても得られ、この
単独塗工紙は心電図計の如く加熱面積の微小な記
録条件に於ける使用には適するが、サーマルプレ
ートの如く加熱面積が大きい場合には、熱記録直
後に該記録紙と色材を塗布した基材との間に粘着
が起り、この両者の剥離が困難となる傾向があ
る。従つて、多用途向けとしては、剥離を容易に
するために顔料を添加することが望ましい。顔料
としては、重質又は軽質炭酸カルシウム、タル
ク、クレー、天然又は合成珪酸塩又は酸化チタン
等の一般顔料を適宜使用することができるが、こ
のうち炭酸カルシウムは極めて良好な色濃度と剥
離効果が得られる。又、顔料の混合割合は、ポリ
ビニルピロリドン100重量部に対し、20〜200重量
部とするのが適当である。
尚、ポリビニルピロリドンの色濃度向上効果は
極めて顕著であるので、目的に応じて変性澱粉、
ヒドロキシエチルセルロース、メチルセルロー
ス、スチレンブタジエン共重合体ラテツクス、ポ
リビニルアルコール等他のバインダーと併用して
も良い。この他、ポリエステルの水分散液の添加
は色濃度向上に効果がある。
本発明に係る熱記録紙の支持体としては、上質
紙などの普通紙、即ちNBKP、NBSP、LBKP、
LBSP等の晒化学パルプに、必要に応じてGP、
TMP等の機械パルプ、CGP等の半機械パルプ、
澱粉、ポリアクリルアミド樹脂およびこれらの誘
導体、メラミンホルムアルデヒド樹脂、尿素ホル
ムアルデヒド樹脂等の紙力増強剤、強化ロジン合
成ポリマー系又はアルキルケテンダイマー等のサ
イズ剤及び硫酸バンドその他の定着剤、タルク、
クレー、重質又は軽質炭酸カルシウム、水酸化ア
ルミニウム、天然又は合成珪酸塩、酸化チタン等
の無機填料、又は粉末状の尿素ホルムアルデヒド
樹脂等の有機填料を添加して普通に抄造したも
の、或は更に酸化澱粉、その他の紙力増強剤を外
添したもの等が使用できる。
以下、本発明を実施例に従つて詳細に説明す
る。
実施例 １
ポリビニルピロリドン40％水溶液及び酸化澱
粉、ヒドロキシエチルセルロース、メチルセルロ
ース、スチレンブタジエン共重合体ラテツクス、
ポリビニルアルコールの５〜20％水溶液又は水分
散液各50重量部（固型分）に夫々、重質炭酸カル
シウム（丸尾カルシウム製スーパー1500）50重量
部をニーダーにて混合して塗料６種類を調製し
た。これら塗料をステキヒトサイズ度12秒、米坪
66g／m2、厚さ97μmの上質紙上に、塗布量が10〜
14g／m2になるように塗布して熱記録紙No.１〜６
を得た。
一方、昇華性分散染料として、デイスパースブ
ルー24（商品名 Duranol Blue 2G）、デイスパ
ースイエロー42（商品名 Resolin Yellow GRL）
及びデイスパースレツド／（商品名 Celliton
Scarlet Ｂ）を使用して、夫々につき染料10重量
部、ポリビニルブチラール３重量部、イソプロピ
ルアルコール45重量部の割合で３本ロールバルに
より練り合わせて、青・黄及び赤の昇華性熱転写
用インキを調製した。更にこれらのインキを薄い
上質紙（米坪30g／m2）にグラビア印刷して作つ
た転写用基紙を使用して、この基紙の印刷面と上
記熱記録紙の塗布面とを接触させて、転写用基紙
の裏面から300℃にセツトした３cm×３cmのサー
マルプレートを５秒間押し付け熱記録紙に熱転写
した。この様にして記録紙に熱転写された青、
黄、赤の記録面の反射濃度をマクベス濃度計によ
り測定し、表１にその結果を示した。尚、反射濃
度は、青はビジユアル（ラツテン＃106）、黄はブ
ルー（ラツテン＃47）、赤はグリーン（ラツテン
＃58）の各フイルターを使用した数値である。
表１から明らかな通り、本発明に係るポリビニ
ルピロリドンをバインダーとする熱記録紙No.１は
反射濃度が著しく高く、熱記録紙としての優秀性
を示しており、又、経時的な色も退色も殆んどみ
られなかつた。これに対し、代表的な各種バイン
ダーを使用した比較例の熱記録紙No.２〜６の反射
濃度は低く、本発明品に比較して品質は格段に劣
るものであつた。又、塗布層を設けない原紙No.７
についても同様に熱転写試験をしたが、低い反射
濃度しか得られなかつた。
The present invention relates to thermal recording paper, and more specifically, it uses a base material coated with a coloring material, brings the coloring material layer into contact with the recording paper, and heats it with a thermal head or the like to transfer the coloring material to the recording paper. This relates to recording paper in a recording method. In general, the most popular thermal recording method is to bring a thermal head into contact with thermal recording paper, which has a recording layer that develops color by causing a physical or chemical change when heated, to obtain the desired color recording on the thermal recording paper. are doing. However, this recording method has disadvantages in that the heat-sensitive recording paper used is susceptible to color staining due to unavoidable pressure and heat during storage and handling, and the manufacturing cost is high. Therefore, as an alternative to the above-mentioned thermal recording method, Japanese Patent Application Laid-open No. 15446/1984 proposes a method in which a coloring material that is solid or semi-solid at room temperature is coated on a base material such as paper or resin film. A method has been proposed in which recording is performed by bringing the coloring material on the base material into contact with recording paper, heating the coloring material on the base material using a thermal head, and selectively transferring it to the recording paper. In this recording method, the coloring material applied to the base material is transferred to the recording paper when the coloring material or the binder containing the coloring material is melted, evaporated, or sublimated by heat.
This is because adhesion, dyeing, etc. to the recording paper occur along with this, and the types of thermal recording are roughly divided into hot melt type and sublimation type. The coloring material used here is a general dye dispersed in a binder such as wax.
Under normal conditions, the coloring material does not transfer even when it comes into contact with the recording paper, but the coloring material does not transfer until it is heated to, for example, 60 to 500°C. Dyes used for this type of coloring material include cationic dyes, disperse dyes,
There are oil-soluble dyes, etc., for example, the sublimation temperature is 60℃~
Sublimable dyes at 300℃ include nitro, azo,
Disperse dyes such as quinoline and anthraquinone are suitable. Therefore, this recording method is characterized in that plain paper can be used as the recording paper. However, when plain paper is used, the color density of the recording is low, especially when it is dyed, and the color fading phenomenon over time is also significant, so there is a demand for the development of recording paper that is compatible with this recording method. . For this reason, in Japanese Patent Application Laid-open No. 55-42824,
It has been proposed to provide a coating layer consisting of a water-soluble binder and a pigment in hot-melt type recording paper, but the color density is still low with the binders described here, such as methyl cellulose and polyvinyl alcohol. Not enough. The inventors of the present invention conducted intensive research to develop a recording paper free of the above-mentioned drawbacks, and found that by providing a coating layer containing polyvinylpyrrolidone, extremely clear and robust recordings could be obtained. ,
The present invention has now been completed. Polyvinylpyrrolidone is a highly water-soluble polymer that forms a transparent film and is known to be used in pharmaceuticals, cosmetics, adhesives, and textile finishing agents. The thermal recording paper of the present invention is a general paper coated with a paint made by mixing a general pigment such as calcium carbonate with an aqueous solution or a solvent solution of polyvinylpyrrolidone.
Prepare by applying 15g/ m2 . Thermal recording paper can also be obtained by coating polyvinylpyrrolidone alone, and this single-coated paper is suitable for use in recording conditions where the heating area is small, such as in electrocardiograms, but when the heating area is small, such as in thermal plates, If it is large, adhesion will occur between the recording paper and the substrate coated with the coloring material immediately after thermal recording, making it difficult to separate the two. Therefore, for multipurpose applications, it is desirable to add pigments to facilitate peeling. General pigments such as heavy or light calcium carbonate, talc, clay, natural or synthetic silicates, or titanium oxide can be used as appropriate. Among these, calcium carbonate has extremely good color density and release effect. can get. Further, the mixing ratio of the pigment is suitably 20 to 200 parts by weight per 100 parts by weight of polyvinylpyrrolidone. In addition, since polyvinylpyrrolidone has a very remarkable effect on improving color density, depending on the purpose, modified starch,
It may be used in combination with other binders such as hydroxyethyl cellulose, methyl cellulose, styrene-butadiene copolymer latex, and polyvinyl alcohol. In addition, addition of an aqueous polyester dispersion is effective in improving color density. As the support for the thermal recording paper according to the present invention, plain paper such as high-quality paper, i.e., NBKP, NBSP, LBKP,
For bleached chemical pulp such as LBSP, GP, if necessary.
Mechanical pulp such as TMP, semi-mechanical pulp such as CGP,
Starch, polyacrylamide resins and their derivatives, paper strength agents such as melamine formaldehyde resins and urea formaldehyde resins, sizing agents such as reinforced rosin synthetic polymers or alkyl ketene dimers, and fixing agents such as sulfate, talc,
Ordinary papermaking with the addition of inorganic fillers such as clay, heavy or light calcium carbonate, aluminum hydroxide, natural or synthetic silicates, titanium oxide, or organic fillers such as powdered urea formaldehyde resin, or Oxidized starch or other paper strength enhancers added externally can be used. Hereinafter, the present invention will be explained in detail according to examples. Example 1 40% polyvinylpyrrolidone aqueous solution and oxidized starch, hydroxyethylcellulose, methylcellulose, styrene-butadiene copolymer latex,
Six types of paints were prepared by mixing 50 parts by weight of each 5-20% aqueous solution or dispersion of polyvinyl alcohol (solid content) with 50 parts by weight of heavy calcium carbonate (Maruo Calcium Super 1500) in a kneader. did. These paints are Steckicht size 12 seconds,
66g/m 2 , 97μm thick high-quality paper with a coating amount of 10~
Apply to thermal recording paper No. 1 to 6 at 14g/ m2 .
I got it. On the other hand, as sublimable disperse dyes, Disperse Blue 24 (product name Duranol Blue 2G) and Disperse Yellow 42 (product name Resolin Yellow GRL)
and Disperse Thread/(Product name Celliton
Scarlet B) was used to prepare blue, yellow, and red sublimation thermal transfer inks by kneading three inks using a roll bar at a ratio of 10 parts by weight of dye, 3 parts by weight of polyvinyl butyral, and 45 parts by weight of isopropyl alcohol. . Furthermore, using a transfer base paper made by gravure printing these inks on thin high-quality paper (30 g/m 2 ), the printed surface of this base paper was brought into contact with the coated surface of the thermal recording paper. Then, a 3 cm x 3 cm thermal plate set at 300°C was pressed against the back side of the transfer base paper for 5 seconds to thermally transfer it to the thermal recording paper. The blue color was thermally transferred to the recording paper in this way.
The reflection densities of the yellow and red recording surfaces were measured using a Macbeth densitometer, and the results are shown in Table 1. Note that the reflection density is a value obtained using the following filters: Visual (Ratten #106) for blue, Blue (Ratten #47) for yellow, and Green (Ratten #58) for red. As is clear from Table 1, thermal recording paper No. 1 using polyvinylpyrrolidone as a binder according to the present invention has an extremely high reflection density, indicating its excellence as a thermal recording paper, and its color also fades over time. I could barely see it either. On the other hand, thermal recording paper Nos. 2 to 6 of Comparative Examples using various typical binders had low reflection densities, and their quality was significantly inferior to that of the products of the present invention. Also, base paper No. 7 without coating layer
A similar thermal transfer test was conducted for the same, but only a low reflection density was obtained.
【表】
実施例 ２
ポリビニルピロリドン40％水溶液と重質炭酸カ
ルシウム（丸尾カルシウム製スーパー1500）とを
各種配合比でニーダーにて混合し、実施例１と同
様にして熱記録紙No.８〜９を得た。これら熱記録
紙を使用して熱転写した記録面の反射濃度を表２
に示す。[Table] Example 2 A 40% aqueous solution of polyvinylpyrrolidone and heavy calcium carbonate (Maruo Calcium Super 1500) were mixed in a kneader at various blending ratios, and thermal recording paper Nos. 8 to 9 were prepared in the same manner as in Example 1. I got it. Table 2 shows the reflection density of the recording surface thermally transferred using these thermal recording papers.
Shown below.
【表】
この表２から明らかなように、塗料中の顔料の
添加量を多くするに従つて記録面の反射濃度は低
下する傾向にあるが、いずれも良好な結果を示し
ている。
実施例 ３
カチオン性染料として、アイゼンビクトリアブ
ル−BH（シアン、保土ケ谷化学(株)製）、アイゼン
カチロンイエロー（イエロー、同）、アイゼンフ
ロキシンFF（マゼンタ、同）を使用して、下記の
組成で２時間半アトライタ処理した後、ワイヤー
バーを用いて6μ厚のポリエステルフイルムに、
約1.0〜1.5g／m2塗布して３種類の熱熔融転写用
リボンを得た。
カチオン性染料 20重量部
エチルセルロース 10重量部
イソプロピルアルコール 70重量部
これらの熱熔融転写用リボンを使用して、その
色材層と、実施例１で使用した熱記録紙No.１〜７
の塗布面とを重ね合せ、280℃にセツトしたサー
マルプレートを５秒間押付けて熱記録紙に転写し
た。
得られた記録面について、その反射濃度を実施
例１と同様にして測定した結果を表３に示した。
尚、シアンは青、イエローは黄、マゼンタは赤と
同じ測定条件とした。
この表３から、熱熔融型の記録においても、ポ
リビニルピロリドンをバインダーとすると反射濃
度が格段に高いことが明らかである。[Table] As is clear from Table 2, as the amount of pigment added to the paint increases, the reflection density on the recording surface tends to decrease, but all the results show good results. Example 3 Using Eisen Victoria Blue-BH (cyan, manufactured by Hodogaya Chemical Co., Ltd.), Eisen Cathilone Yellow (yellow, same), and Eisen Phloxin FF (magenta, same) as cationic dyes, the following composition was prepared. After being treated with an attritor for 2 and a half hours, a wire bar was used to attach it to a 6μ thick polyester film.
Three types of ribbons for hot melt transfer were obtained by coating approximately 1.0 to 1.5 g/m 2 . Cationic dye 20 parts by weight Ethyl cellulose 10 parts by weight Isopropyl alcohol 70 parts By using these ribbons for thermal melt transfer, the coloring material layer and the thermal recording paper Nos. 1 to 7 used in Example 1 were prepared.
The coated surfaces were placed one on top of the other, and a thermal plate set at 280°C was pressed for 5 seconds to transfer it to thermal recording paper. The reflection density of the obtained recording surface was measured in the same manner as in Example 1, and the results are shown in Table 3.
Note that the measurement conditions were the same for cyan, blue, yellow, and red. From Table 3, it is clear that even in hot melt recording, the reflection density is significantly higher when polyvinylpyrrolidone is used as the binder.
Claims (1)
であつて染料を含有する色材層に対して接触し、
加熱により選択的に該色材の転移を受ける熱記録
紙において、ポリビニルピロリドンを含む塗布層
を設けたことを特徴とする熱記録紙。1. Contact with a color material layer provided on a substrate that is solid or semi-solid at room temperature and contains a dye,
1. A thermal recording paper to which the coloring material is selectively transferred by heating, characterized in that the thermal recording paper is provided with a coating layer containing polyvinylpyrrolidone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55166555A JPS5791296A (en) | 1980-11-28 | 1980-11-28 | Thermal recording paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55166555A JPS5791296A (en) | 1980-11-28 | 1980-11-28 | Thermal recording paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5791296A JPS5791296A (en) | 1982-06-07 |
| JPH0355319B2 true JPH0355319B2 (en) | 1991-08-22 |
Family
ID=15833426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55166555A Granted JPS5791296A (en) | 1980-11-28 | 1980-11-28 | Thermal recording paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5791296A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58222890A (en) * | 1982-06-21 | 1983-12-24 | Matsushita Electric Ind Co Ltd | Image-receiving body |
| JPS5964391A (en) * | 1982-10-04 | 1984-04-12 | Konishiroku Photo Ind Co Ltd | Heat sensitive transfer recording medium |
| JPS59165688A (en) * | 1983-03-11 | 1984-09-18 | Shin Nisso Kako Co Ltd | Thermal transfer recording material |
| JPS6025793A (en) * | 1983-07-25 | 1985-02-08 | Dainippon Printing Co Ltd | Sheet for heat transfer printing |
| JPS6038192A (en) * | 1983-08-10 | 1985-02-27 | Kanzaki Paper Mfg Co Ltd | Image receiving sheet for thermal transfer recording |
| JPS61179786A (en) * | 1985-02-05 | 1986-08-12 | Fuji Photo Film Co Ltd | Thermal recording paper |
| US4756950A (en) * | 1985-03-23 | 1988-07-12 | Mitsubishi Paper Mills, Ltd. | Gradation recording heat-transfer sheet |
| JPS62162589A (en) * | 1986-01-13 | 1987-07-18 | Oji Paper Co Ltd | Forming intermediate-tone image by thermal transfer printer |
| JPS62202788A (en) * | 1986-03-03 | 1987-09-07 | Oji Paper Co Ltd | Forming intermediate gradation image by thermal transfer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5436813A (en) * | 1977-04-21 | 1979-03-17 | Davis Roy Elbert | Method of sublimation copying* and strarified product |
| JPS5542824A (en) * | 1978-09-20 | 1980-03-26 | Mitsubishi Electric Corp | Thermo transfer copying medium of inked pattern |
-
1980
- 1980-11-28 JP JP55166555A patent/JPS5791296A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5436813A (en) * | 1977-04-21 | 1979-03-17 | Davis Roy Elbert | Method of sublimation copying* and strarified product |
| JPS5542824A (en) * | 1978-09-20 | 1980-03-26 | Mitsubishi Electric Corp | Thermo transfer copying medium of inked pattern |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5791296A (en) | 1982-06-07 |
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