JPH02188293A - Reversible thermosensitive recording medium - Google Patents
Reversible thermosensitive recording mediumInfo
- Publication number
- JPH02188293A JPH02188293A JP1009058A JP905889A JPH02188293A JP H02188293 A JPH02188293 A JP H02188293A JP 1009058 A JP1009058 A JP 1009058A JP 905889 A JP905889 A JP 905889A JP H02188293 A JPH02188293 A JP H02188293A
- Authority
- JP
- Japan
- Prior art keywords
- hydroxyphenyl
- bis
- recording layer
- color
- recording medium
- 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.)
- Pending
Links
- 230000002441 reversible effect Effects 0.000 title claims description 15
- 150000001875 compounds Chemical class 0.000 claims abstract description 13
- 239000011230 binding agent Substances 0.000 claims abstract description 11
- ZHOOBJNSSOEZON-UHFFFAOYSA-N 2,2-bis(2-hydroxyphenyl)acetic acid Chemical class C=1C=CC=C(O)C=1C(C(=O)O)C1=CC=CC=C1O ZHOOBJNSSOEZON-UHFFFAOYSA-N 0.000 claims abstract description 9
- 150000003839 salts Chemical class 0.000 claims abstract description 7
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims abstract description 6
- JFVNXKHZDBWVJF-UHFFFAOYSA-N 2,2-bis(2-hydroxyphenyl)butanoic acid Chemical class C=1C=CC=C(O)C=1C(C(O)=O)(CC)C1=CC=CC=C1O JFVNXKHZDBWVJF-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 238000000576 coating method Methods 0.000 abstract description 20
- 239000011248 coating agent Substances 0.000 abstract description 19
- 239000007788 liquid Substances 0.000 abstract description 13
- 239000000123 paper Substances 0.000 abstract description 8
- 239000003960 organic solvent Substances 0.000 abstract description 4
- 239000002985 plastic film Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 229920006255 plastic film Polymers 0.000 abstract description 2
- 239000002562 thickening agent Substances 0.000 abstract description 2
- 239000012463 white pigment Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 17
- 239000000975 dye Substances 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 150000002596 lactones Chemical group 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 206010037660 Pyrexia Diseases 0.000 description 2
- 150000003973 alkyl amines Chemical class 0.000 description 2
- -1 amine salt Chemical class 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229920005992 thermoplastic resin 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
- FJLUATLTXUNBOT-UHFFFAOYSA-N 1-Hexadecylamine Chemical compound CCCCCCCCCCCCCCCCN FJLUATLTXUNBOT-UHFFFAOYSA-N 0.000 description 1
- JPZYXGPCHFZBHO-UHFFFAOYSA-N 1-aminopentadecane Chemical compound CCCCCCCCCCCCCCCN JPZYXGPCHFZBHO-UHFFFAOYSA-N 0.000 description 1
- BMVXCPBXGZKUPN-UHFFFAOYSA-N 1-hexanamine Chemical compound CCCCCCN BMVXCPBXGZKUPN-UHFFFAOYSA-N 0.000 description 1
- MHZGKXUYDGKKIU-UHFFFAOYSA-N Decylamine Chemical compound CCCCCCCCCCN MHZGKXUYDGKKIU-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- WJYIASZWHGOTOU-UHFFFAOYSA-N Heptylamine Chemical compound CCCCCCCN WJYIASZWHGOTOU-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- PLZVEHJLHYMBBY-UHFFFAOYSA-N Tetradecylamine Chemical compound CCCCCCCCCCCCCCN PLZVEHJLHYMBBY-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000007754 air knife coating Methods 0.000 description 1
- 150000007514 bases Chemical class 0.000 description 1
- CJPQIRJHIZUAQP-MRXNPFEDSA-N benalaxyl-M Chemical compound CC=1C=CC=C(C)C=1N([C@H](C)C(=O)OC)C(=O)CC1=CC=CC=C1 CJPQIRJHIZUAQP-MRXNPFEDSA-N 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- KAJZYANLDWUIES-UHFFFAOYSA-N heptadecan-1-amine Chemical compound CCCCCCCCCCCCCCCCCN KAJZYANLDWUIES-UHFFFAOYSA-N 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- FJDUDHYHRVPMJZ-UHFFFAOYSA-N nonan-1-amine Chemical compound CCCCCCCCCN FJDUDHYHRVPMJZ-UHFFFAOYSA-N 0.000 description 1
- IOQPZZOEVPZRBK-UHFFFAOYSA-N octan-1-amine Chemical compound CCCCCCCCN IOQPZZOEVPZRBK-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920001483 poly(ethyl methacrylate) polymer Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- ABVVEAHYODGCLZ-UHFFFAOYSA-N tridecan-1-amine Chemical compound CCCCCCCCCCCCCN ABVVEAHYODGCLZ-UHFFFAOYSA-N 0.000 description 1
- QFKMMXYLAPZKIB-UHFFFAOYSA-N undecan-1-amine Chemical compound CCCCCCCCCCCN QFKMMXYLAPZKIB-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は画像形成材料に関するものである。更に詳しく
は、熱エネルギーの違いによって、画像形成及び消去を
行う可逆性感熱記録媒体に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an image forming material. More specifically, the present invention relates to a reversible thermosensitive recording medium that performs image formation and erasing using differences in thermal energy.
〈従来技術と発明が解決しようとする課題〉従来より、
可逆的画像材料については、特開昭５８−１９１１９０
号、特開昭６０−１９３６９１号、米国特許明細書３６
６６５２５号、［特開昭５４−１１９３７７号、特開昭
６３−３９３７７号、特開昭６３−４１１８６号」米国
特許明細書４０２８１１８号、特開昭５０−８１１５７
号、特開昭５０−１０５５５５号に開示されている。<Prior art and problems to be solved by the invention> Conventionally,
For reversible image materials, see JP-A-58-191190.
No. 60-193691, U.S. Patent Specification 36
66525, [JP-A-54-119377, JP-A-63-39377, JP-A-63-41186] U.S. Patent Specification No. 4028118, JP-A-50-81157
No. 50-105555.
しかし、米国特許明細書４０２８１１８号、特開昭５０
−８１１５７号および特開昭５０−１０５５５５号にお
いて形成される画像は温度によって変化するので画像の
メモリー性がない、また、特開昭５８−１９１１９０号
、特開昭６０−１９３６９１号、米国特許明細書３６６
５２５号に記載されているものは、発色剤、顕色剤およ
びバインダーから成る記録層を設けて成り、場合によっ
ては、低蒸気圧溶剤、又は、熱溶融物質を添加している
０発色は熱エネルギーを用いて、水、水蒸気または、あ
る種の有機溶剤によって消色するものである。熱エネル
ギーの制御のみで発色・消色をくりかえすものではない
。However, U.S. Patent Specification No. 4028118,
The images formed in JP-A-81157 and JP-A-50-105555 change depending on the temperature, so there is no memorability of the image. Book 366
The device described in No. 525 is provided with a recording layer consisting of a color former, a color developer, and a binder, and in some cases, a low vapor pressure solvent or a heat-melting substance is added. It uses energy to erase the color with water, steam, or some kind of organic solvent. Coloring and decoloring are not repeated only by controlling thermal energy.
特開昭５４−１１９３７７号、特開昭６３−３９３７７
号、特開昭６３−４１１８６号に記載されているものは
、樹脂母材とこの樹脂母材中に分散された有機低分子物
質とを主成分とする感熱層を有するものである。記録方
法は、熱エネルギーの制御によって感熱層の透明度が可
逆的に変化して画像形成及び消去を行うものである。す
なわち、化学的に発色・消色して画像形成及び消去を行
うものではない。JP-A-54-119377, JP-A-63-39377
JP-A No. 63-41186 has a heat-sensitive layer whose main components are a resin matrix and an organic low-molecular substance dispersed in the resin matrix. In the recording method, the transparency of the heat-sensitive layer is reversibly changed by controlling thermal energy to form and erase images. That is, image formation and erasing are not performed by chemically developing and erasing colors.
以上、熱エネルギーの制御のみによって、化学的に発色
・消色する系は、従来技術によってはみあたらない。As described above, conventional techniques do not provide systems that chemically develop and decolorize only by controlling thermal energy.
本発明の目的は、従来技術にはない熱エネルギーの制御
のみによって、化学的に発色・消色するメモリー性のあ
る可逆性悪熱記録媒体を提供することである。An object of the present invention is to provide a reversible fever recording medium with memory properties that chemically develops and decolors only by controlling thermal energy, which is not available in the prior art.
〈課題を解決するための手段〉
本発明である可逆性感熱記録媒体は、支持体上にロイコ
化合物と該ロイコ化合物と熱的に反応して顕色あるいは
減色する顕滅色剤、およびバインダーとを主成分とする
記録層を設けた記録体であって、該顕減色剤が
（但し、Ｒ１は水素元素、またはメチル基、Ｒ２はＣ１
以上のアルキル基を表わす。）
で表わされるビス（ヒドロキシフェニル）酢酸または、
ビス（ヒドロキシフェニル）酪酸と高級脂肪族アミンと
の塩であることを特徴とする熱エネルギーの制御によっ
て化学的に発色・消色することができる可逆性感熱記録
媒体を提供するものである。<Means for Solving the Problems> The reversible thermosensitive recording medium of the present invention comprises, on a support, a leuco compound, a color developer/decolorizer that develops or reduces color by thermally reacting with the leuco compound, and a binder. A recording medium provided with a recording layer mainly composed of
represents the above alkyl group. ) or bis(hydroxyphenyl)acetic acid represented by
The present invention provides a reversible thermosensitive recording medium that is characterized by being a salt of bis(hydroxyphenyl)butyric acid and a higher aliphatic amine and can be chemically colored and erased by controlling thermal energy.
〈作用〉
本発明記録媒体の記録、即ち画像形成及び消去原理は以
下の通りである。無色のロイコ染料とフェノール性化合
物は熱エネルギーによって、無色のロイコ染料のラクト
ン環が開環して、無色から有色に色変化する。しかし、
ラクトン環が開環した有色化合物は塩基性物質に触れる
と閉環してもとのラクトン環のある無色の化合物にもど
る。フェノール性化合物としてビス（ヒドロキシフェニ
ル）酢酸マたはビス（ヒドロキシフェニル）酪酸と塩基
性化合物としてアルキルアミンのある特定の化合物の組
合せによって塩を形成した化合物、すなわち、顕減色剤
は、無色のロイコ染料を熱エネルギーの制御のみで、ラ
クトン環を開環して有色化合物にしたり、閉環して無色
のロイコ体に戻したりすることができる。この現象は、
顕減色剤の構造とロイコ染料の可逆性によるものである
。<Operation> The principles of recording, ie, image formation and erasing, of the recording medium of the present invention are as follows. Colorless leuco dyes and phenolic compounds change color from colorless to colored when the lactone ring of the colorless leuco dye is opened by thermal energy. but,
When a colored compound with an open lactone ring contacts a basic substance, the ring closes and returns to the original colorless compound with a lactone ring. A compound formed into a salt by a combination of a specific compound of bis(hydroxyphenyl)acetate or bis(hydroxyphenyl)butyric acid as a phenolic compound and an alkylamine as a basic compound, that is, a color developer/subtractor is a colorless leuko By simply controlling the thermal energy of the dye, the lactone ring can be opened to form a colored compound, or the ring can be closed to return it to a colorless leuco compound. This phenomenon is
This is due to the structure of the color developer and the reversibility of the leuco dye.
すなわち、ｇ減色剤は上記したようにフェノール性水酸
基を有するアミン塩であり、熱の作用によって酸の性質
を示したり、塩基の性質を示すためにロイコ染料にたい
して、顕色剤となったり、減色剤になったりするためで
ある。In other words, as mentioned above, the g color reducing agent is an amine salt having a phenolic hydroxyl group, and because it exhibits acidic properties or basic properties by the action of heat, it acts as a color developer and color reducing agent for leuco dyes. This is because it can be used as a medicine.
本発明である無色のロイコ染料と顕減色剤として、ビス
（ヒドロキシフェニル）酢酸またはビス（ヒドロキシフ
ェニル）醋酸とアルキルアミンとの塩から成る記録層を
設けた記録体は、熱エネルギー（ｈｌ）により有色の画
像を形成する。この画像は、別の熱エネルギー（ｈ２）
によって消去可能であり、画像を消去した当該画像形成
体に熱エネルギー （ｈｌ）を作用させると、再び画像
が形成される。The recording medium of the present invention, which is provided with a recording layer consisting of a colorless leuco dye and a salt of bis(hydroxyphenyl)acetic acid or bis(hydroxyphenyl)acetic acid and an alkylamine as a developer/subtractor, can be produced by thermal energy (hl). Form a colored image. This image shows another thermal energy (h2)
When thermal energy (hl) is applied to the image forming body from which the image has been erased, the image will be formed again.
この画像の形成と消去は何回でも繰返し行うことができ
る。この画像形成体は熱エネルギーを作用させない限り
、画像形成状態または、画像消去状態を保持している。Formation and erasure of this image can be repeated any number of times. This image forming body maintains an image forming state or an image erasing state unless thermal energy is applied to it.
形成した画像を消去した後の地肌は、何ら形成画像の痕
跡を留めることなく白色無地の可逆性記録媒体である。After erasing the formed image, the background is a plain white reversible recording medium without retaining any traces of the formed image.
本発明の顕減色剤は一般式 （但し、Ｒｔ は水素原子、またはメチル基、Ｒ。The color developer and subtractor of the present invention has the general formula (However, Rt is a hydrogen atom or a methyl group, R.
はＣ１以上のアルキル基を表わす、）
で表わされるビス（ヒドロキシフェニル）酢酸または、
ビス（ヒドロキシフェニル）酪酸と高゛級脂肪族アミン
との塩であり、脂肪族アミンを具体例をもって示せば、
ヘキシルアミン、ヘプチルアミン、オクチルアミン、ノ
ニルアミン、デシルアミン、ウンデシルアミン、ラウリ
ルアミン、トリデシルアミン、テトラデシルアミン、ペ
ンタデシルアミン、セチルアミン、ヘプタデシルアミン
、ステアリルアミン等をあげることができる。represents an alkyl group of C1 or more, or bis(hydroxyphenyl)acetic acid represented by
It is a salt of bis(hydroxyphenyl)butyric acid and a higher aliphatic amine, and if the aliphatic amine is shown with a specific example,
Examples include hexylamine, heptylamine, octylamine, nonylamine, decylamine, undecylamine, laurylamine, tridecylamine, tetradecylamine, pentadecylamine, cetylamine, heptadecylamine, and stearylamine.
本発明である発色剤、すなわち、ロイコ染料を具体例を
もって示せば、クリスタルバイオレットラクトン、３−
インドリノ−３−Ｐ−ジメチルアミノフェニル−６−シ
メチルアミノフタリド、３−ジエチルアミノ−７−クロ
ロフルオラン、２−（２−フルオロフェニルアミノ）−
６−ジニチルアミノフルオラン、２−（２−フルオロフ
ェニルアミノ）−６−ジーｎ−ブチルアミノフルオラン
、３−ジエチルアミノ−７−シクロヘキシルアミノフル
オラン、３−ジエチルアミノ−５−メチル−７−ｔ−ブ
チルフルオラン、３−ジエチルアミノ−６−メチル−７
−アニリノフルオラン、３゛−ジエチルアミノ−６−メ
チル−７−Ｐ−ブチルアニリノフルオラン、３−シクロ
ヘキシルアミノ−６−クロロフルオラン、２−アニリノ
−３−メｆ ／Ｌ／−６−（Ｎ−エチル−Ｐ−）バイン
ダ）−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、３−ピロリジノ−７−シクロヘキ
シルアミノフルオラン、３−Ｎ−メチルシクロヘキシル
アミノ−６−メチル−７−アニリノフルオラン、３−Ｎ
−エチルペンチルアミノ−６−メチル−７−アニリノフ
ルオラン等を挙げることができる。Specific examples of the color forming agent of the present invention, that is, leuco dye, include crystal violet lactone, 3-
Indolino-3-P-dimethylaminophenyl-6-dimethylaminophthalide, 3-diethylamino-7-chlorofluorane, 2-(2-fluorophenylamino)-
6-Dinithylaminofluorane, 2-(2-fluorophenylamino)-6-d-n-butylaminofluorane, 3-diethylamino-7-cyclohexylaminofluorane, 3-diethylamino-5-methyl-7-t -butylfluorane, 3-diethylamino-6-methyl-7
-anilinofluorane, 3'-diethylamino-6-methyl-7-P-butylanilinofluorane, 3-cyclohexylamino-6-chlorofluorane, 2-anilino-3-meth/L/-6- (N-ethyl-P-)binder)-fluorane, 3-pyrrolidino-6-methyl-7-
Anilinofluorane, 3-pyrrolidino-7-cyclohexylaminofluorane, 3-N-methylcyclohexylamino-6-methyl-7-anilinofluorane, 3-N
-ethylpentylamino-6-methyl-7-anilinofluorane and the like.
また、本発明においてバインダーとしては通常用いられ
る水、または有機溶剤に溶解する高分子材料を使用する
ことができる。具体例をもって示せばポリビニルアルコ
ール、エチルセルロース、酢酸セルロース、ポリスチレ
ン、ポリ塩化ビニル、線状の飽和ポリエステル、ポリメ
タクリル酸メチル、ポリメタクリル酸エチル等のメタク
リル樹脂の単独又は共重合物、ポリウレタン、ポリブチ
ラール、ニトロセルロース等の熱可塑性樹脂が使用でき
る。Further, in the present invention, a commonly used polymeric material that dissolves in water or an organic solvent can be used as the binder. Specific examples include polyvinyl alcohol, ethyl cellulose, cellulose acetate, polystyrene, polyvinyl chloride, linear saturated polyester, polymethyl methacrylate, polyethyl methacrylate and other methacrylic resins alone or copolymers, polyurethane, polybutyral, Thermoplastic resins such as nitrocellulose can be used.
次に本発明における支持体上に記録層を塗工する方法は
、具体的には、水又は有機溶剤にて均一に分散もしくは
溶解した塗液中にバインダーを溶解させ、必要に応じて
、液性改良剤として増粘剤や白色顔料等を添加して成る
記録層塗工液を紙、プラスチックフィルム又はシートな
どの支持体上に、バー塗布、ブレード塗布、エアーナイ
フ塗布、グラビア塗布、ロールコーティング塗布等の塗
布法により塗布、乾燥して記録層を設ける。Next, in the method of coating the recording layer on the support in the present invention, specifically, the binder is dissolved in a coating liquid uniformly dispersed or dissolved in water or an organic solvent, and if necessary, the binder is dissolved in a coating liquid. A recording layer coating solution containing a thickener, white pigment, etc. as a property improver is applied onto a support such as paper, plastic film or sheet by bar coating, blade coating, air knife coating, gravure coating, or roll coating. A recording layer is provided by coating and drying by a coating method such as coating.
さらに、本発明である支持体上にロイコ染料、顕減色剤
、およびバインダーから成る記録層上に、サー？ルヘッ
ドマッチング性（サーマルヘッドへのカス付着、スティ
ッキング）の改良、あるいは記録層の耐久性を付与する
目的で保護層を設けても何隻本発明の記録体の特性を損
うことはない。Further, on the support of the present invention, a recording layer comprising a leuco dye, a color developer/decreaser, and a binder is coated with a surfactant. No matter how many protective layers are provided for the purpose of improving thermal head matching (adhesion of debris to the thermal head, sticking) or imparting durability to the recording layer, the characteristics of the recording medium of the present invention will not be impaired.
例えば、保護層成分としては無色無機顔料あるいはワッ
クス類等のフィラーと当該記録層バインダーに使用する
熱可塑性樹脂、あるいは熱硬化性樹脂、紫外線硬化樹脂
との組合せが用いられる。For example, as a component of the protective layer, a combination of a filler such as a colorless inorganic pigment or wax and a thermoplastic resin, a thermosetting resin, or an ultraviolet curing resin used for the binder of the recording layer is used.
本発明による画像形成または画像の消去の方法は、熱に
よるものであり、サーマルプリンター熱反射複写装置、
ホットスタンバ−や熱ロール等の装置を用いて行うこと
ができる。The image forming or image erasing method according to the present invention is based on heat, and uses a thermal printer, a heat reflection copying device,
This can be carried out using a device such as a hot stun bar or a hot roll.
以下、実施例を挙げて具体的に本発明を説明する。Hereinafter, the present invention will be specifically explained with reference to Examples.
猶、実施例中の１部」は重量部を示す。In addition, "1 part" in the examples indicates parts by weight.
実施例Ｉ
Ａ液
Ｂ液
印板で１秒間押圧したら印字像は消去され、元の白色状
態の記録層にもどった。再び同様の印字、消去を行った
ところ再現性があり、可逆性感熱記録媒体として極めて
優れたものであることが確認できた。Example I Liquid A Liquid B When the printing plate was pressed for 1 second, the printed image was erased and the recording layer returned to its original white state. When similar printing and erasing were carried out again, it was confirmed that there was reproducibility and that the medium was extremely excellent as a reversible thermosensitive recording medium.
実施例２
Ａ液
上記成分Ａ液、Ｂ′ａをサンドミルにて、別々に１時間
粉砕、分散した後、これ等の分散液をＡ液１部に対して
、Ｂ液４部の割合で十分混合して記録層塗工液を調整し
た。この塗工液を６０ｇ／ポの上質紙上に、メイヤーバ
ーを用いて、乾燥重量が６ｇ／ｎ（となるように塗布、
乾燥して地肌カブリのない可逆性悪熱記録紙を作製した
。Example 2 Solution A After separately grinding and dispersing the components A and B'a in a sand mill for 1 hour, the ratio of these dispersions to 1 part of solution A to 4 parts of solution B is sufficient. A recording layer coating solution was prepared by mixing. This coating solution was applied onto 60g/pot of high-quality paper using a Meyer bar so that the dry weight was 6g/n.
A reversible fever recording paper which dries and has no background fog was produced.
このようにして作製した記録紙を東芝製サーマルシュミ
レータ−（印字条件：印加電力０．４０ｗ／ｄｏｔ 、
パルス中２．５ｓｓ ０Ｎ１０ＦＦ）を用いて印字した
ところ鮮明かつ高濃度の青色の印字像を得ることができ
た０次に全面に１２０”Ｃに加熱されている熱Ｂ液
実施例３
Ａ液
上記成分Ａ液、Ｂ液をボールミルにて、別々に２０時間
粉砕、分散した。その後、これ等の分散液をＡ液２部に
対して、Ｂ液５部の割合で十分混合して記録層塗工液を
調整した。この塗工液を６０ｇ／ポの上質紙に、メイヤ
ーバーを用いて、乾燥重量が７８／ｒｒｆとなるように
塗布、乾燥して地肌カプリのない可逆性感熱記録紙を作
製した。The recording paper produced in this way was printed using a Toshiba thermal simulator (printing conditions: applied power 0.40w/dot,
When printing using 2.5ss 0N10FF during pulse, a clear and high-density blue print image could be obtained.Thermal B liquid was heated to 120"C over the entire surface.Example 3 A liquid above Components A and B were separately ground and dispersed in a ball mill for 20 hours.Then, these dispersions were thoroughly mixed in a ratio of 2 parts of A to 5 parts of B to coat the recording layer. A coating solution was prepared.This coating solution was applied to 60 g/Po high-quality paper using a Meyer bar so that the dry weight was 78/rrf, and dried to produce reversible thermal recording paper without background capri. Created.
このようにして作製した可逆性感熱記録紙を実施例１と
同様に印字、消去を繰り返して、その効果を確認した。The thus produced reversible thermosensitive recording paper was repeatedly printed and erased in the same manner as in Example 1, and its effects were confirmed.
但し、印字の色相は、鮮明でかつ高濃度の黒色である。However, the hue of the print is clear and highly concentrated black.
Ｂ液
上記成分Ａ液、Ｂ液およびＣ液をあらかじめサンドミル
にて２時間均一に分散した０分散した液Ａ液３部、Ｂｉ
＆２０液を均一に混合して記録層塗工液を調整した。Solution B The above components A, B, and C were uniformly dispersed in advance in a sand mill for 2 hours. 0 Dispersed solution A, 3 parts of Bi
&20 liquid was mixed uniformly to prepare a recording layer coating liquid.
この塗工液を１８８μの白色ポリエステルシート上にバ
ーコーターを用いて乾燥膜厚が６μに成るように塗布乾
燥して記録層を設けた。この記録層上にあらかじめ分散
したＣ液をバーコーターを用いて乾燥膜厚が３μに成る
ように塗布、乾燥して保護層を設けて、可逆性感熱記録
シートを作製した。This coating solution was coated on a 188 .mu.m white polyester sheet using a bar coater so as to have a dry film thickness of 6 .mu.m, and dried to form a recording layer. A reversible thermosensitive recording sheet was prepared by coating the recording layer with pre-dispersed liquid C using a bar coater so as to have a dry film thickness of 3 μm, and drying to form a protective layer.
この記録シートは地肌カブリのない白色度の高いもので
あった。This recording sheet had high whiteness with no background fog.
このようにして作製した記録シートを東芝製サーマルシ
ュミレータ−（印字条件：印加電力０．４５ｗ／ｄｏｔ
、パルス中２．５ｍｓ ＯＮ ／ ０ＦＦ）を用いて印
字したところ鮮明かつ高濃度（反射濃度： １．５）の
黒色の印字像を得ることができた。次に印字した記録シ
ートをロール温度１３０℃の熱ロール機に通したところ
印字像は消去され、元の白色状態の記録シートにもどっ
た。再び同様の印字、消去を（りかえしたところ再現性
があり、可逆性悪熱記録媒体として極めて優れたもので
あることが確認できた。The recording sheet produced in this way was printed on a Toshiba thermal simulator (printing conditions: applied power 0.45w/dot).
, 2.5ms ON/0FF during pulse), a clear and high-density (reflection density: 1.5) black printed image could be obtained. Next, when the printed recording sheet was passed through a hot roll machine with a roll temperature of 130° C., the printed image was erased and the recording sheet returned to its original white state. When the same printing and erasing was performed again, it was confirmed that there was reproducibility and that it was an extremely excellent reversible heat recording medium.
〈発明の効果〉
本発明の可逆性感熱記録媒体は、熱エネルギーの制御の
みによって簡単に画像形成および消去を行うものであり
、化学的に発色、消色する系である。<Effects of the Invention> The reversible thermosensitive recording medium of the present invention easily forms and erases images only by controlling thermal energy, and is a system that chemically develops and erases color.
その為、高コントラストでかつ鮮明な画像を形成でき、
ロイコ化合物をかえることにより種々の色相ができる。Therefore, it is possible to form high contrast and clear images,
Various hues can be created by changing the leuco compound.
そして画像形成、消去を何回もくりかえすことができる
。その為、デイスプレーや電子黒板はもとより、偽造防
止が必要なカード類、およびプリペイドカード等の残高
表示媒体として利用することができる。Image formation and erasing can be repeated many times. Therefore, it can be used not only for displays and electronic blackboards, but also as a balance display medium for cards that require counterfeit prevention, prepaid cards, and the like.
特 許 出 願 人 凸版印刷株式会社 代表者 鈴木和夫Patent applicant Toppan Printing Co., Ltd. Representative: Kazuo Suzuki
Claims (1)
応して顕色または減色する顕減色剤、およびバインダー
とを主成分とする記録層を設けた記録体であって、該顕
減色剤が一般式（１） ▲数式、化学式、表等があります▼・・・（１） （但し、Ｒ＿１は水素原子、またはメチル基、Ｒ＿２は
Ｃ＿８以上のアルキル基を表わす。） で表わされるビス（ヒドロキシフェニル）酢酸、または
ビス（ヒドロキシフェニル）酪酸と高級脂肪族アミンと
の塩であることを特徴とする熱エネルギーの違いによっ
て発色・消色することができる可逆性感熱記録媒体。[Scope of Claims] A recording medium provided with a recording layer on a support, the main components of which are a leuco compound, a color developer/reducer that develops or reduces color by thermally reacting with the leuco compound, and a binder. Therefore, the developer/subtractor has the general formula (1) ▲There are mathematical formulas, chemical formulas, tables, etc.▼...(1) (However, R_1 represents a hydrogen atom or a methyl group, and R_2 represents an alkyl group of C_8 or more. ) is a salt of bis(hydroxyphenyl)acetic acid or bis(hydroxyphenyl)butyric acid and a higher aliphatic amine, and is a reversible thermosensitive recording material that can be colored or erased by the difference in thermal energy. Medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1009058A JPH02188293A (en) | 1989-01-18 | 1989-01-18 | Reversible thermosensitive recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1009058A JPH02188293A (en) | 1989-01-18 | 1989-01-18 | Reversible thermosensitive recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02188293A true JPH02188293A (en) | 1990-07-24 |
Family
ID=11710022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1009058A Pending JPH02188293A (en) | 1989-01-18 | 1989-01-18 | Reversible thermosensitive recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02188293A (en) |
Cited By (46)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0418399A1 (en) * | 1989-04-07 | 1991-03-27 | Toppan Printing Co., Ltd. | Composition for reversible thermal recording medium |
| JPH05309915A (en) * | 1992-05-11 | 1993-11-22 | Sliontec:Kk | Method for controlling reversible thermal recording apparatus |
| EP0701905A1 (en) | 1994-09-14 | 1996-03-20 | New Oji Paper Co., Ltd. | Thermosensitive reversible colordeveloping and disappearing agent |
| US5545381A (en) * | 1991-01-31 | 1996-08-13 | Ricoh Company, Ltd. | Device for regenerating printed sheet-like recording medium |
| US5547500A (en) * | 1994-03-24 | 1996-08-20 | Ricoh Company, Ltd. | Reversible thermal coloring compositions, and recording media and methods using the same |
| US5574538A (en) * | 1994-09-26 | 1996-11-12 | Ricoh Company, Ltd. | Method and apparatus for removing image forming substance from image holding member forming processing situation mark |
| US5605777A (en) * | 1992-08-31 | 1997-02-25 | Ricoh Company, Ltd. | Method and apparatus for regenerating image holding member |
| US5642550A (en) * | 1994-02-28 | 1997-07-01 | Ricoh Company, Ltd. | Apparatus for removing image forming substance from image holding member |
| US5710094A (en) * | 1994-10-27 | 1998-01-20 | Nippon Paper Industries Co. Ltd. | Reversible multi-color thermal recording medium |
| US5735009A (en) * | 1994-10-14 | 1998-04-07 | Ricoh Company, Ltd. | Device for removing a substance deposited on a sheet |
| US5753400A (en) * | 1993-09-22 | 1998-05-19 | Ricoh Company, Ltd. | Method for repeatedly using image holding member |
| US5813344A (en) * | 1994-10-24 | 1998-09-29 | Ricoh Company, Ltd. | Method and apparatus for removing image forming substance from image holding member |
| US5900900A (en) * | 1991-01-11 | 1999-05-04 | Ricoh Company, Ltd. | Image recording method using reversible thermosensitive recording material and image display apparatus using the same |
| US5977020A (en) * | 1997-07-17 | 1999-11-02 | Oji Paper Co., Ltd. | Thermosensitive reversible recording material |
| US6095164A (en) * | 1993-09-22 | 2000-08-01 | Ricoh Company, Ltd. | Method and apparatus for removing image forming substance from image holding member |
| US6177383B1 (en) | 1998-03-23 | 2001-01-23 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, and image forming and erasing method |
| US6261992B1 (en) | 1998-09-29 | 2001-07-17 | Ricoh Company, Ltd. | Reversible thermosensitive recording material and recording method and apparatus therefor |
| US6291117B1 (en) | 1999-07-22 | 2001-09-18 | Mitsubishi Paper Mills Ltd. | Reversible heat-sensitive recording material |
| US6579826B2 (en) | 2000-10-10 | 2003-06-17 | Ricoh Company Limited | Reversible thermosensitive recording medium and image forming and erasing method using the recording medium |
| WO2003091041A1 (en) | 2002-04-23 | 2003-11-06 | Ricoh Company, Ltd. | Information recording/displaying card, image processing method using same, and image processor |
| EP1391314A2 (en) | 2002-08-19 | 2004-02-25 | Sony Corporation | Reversible multicolor recording medium and recording method using the same |
| US6734138B2 (en) | 2000-11-30 | 2004-05-11 | Ricoh Company, Ltd. | Reversible thermosensitive recording material, and image recording and erasing method using the recording material |
| US6770592B2 (en) | 2001-02-26 | 2004-08-03 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium and image processing method using the same |
| WO2004082955A1 (en) | 2003-03-20 | 2004-09-30 | Ricoh Company, Ltd. | Reversible thermal recording medium |
| EP1571005A1 (en) | 2004-03-03 | 2005-09-07 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, imaging device and imaging method |
| WO2006006725A1 (en) | 2004-07-13 | 2006-01-19 | Ricoh Company, Ltd. | Phenol compound, reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and image-processing method |
| US6989349B2 (en) | 2002-04-23 | 2006-01-24 | Ricoh Company, Ltd. | Information recording-displaying card, image processing method using same, and image processor |
| US6995116B2 (en) | 2002-08-19 | 2006-02-07 | Sony Corporation | Reversible multicolor recording medium, and recording method using the same |
| EP1669208A1 (en) | 2004-11-02 | 2006-06-14 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, label, apparatus, and method |
| US7238642B2 (en) | 2003-06-25 | 2007-07-03 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, label and member, and, image processing apparatus and method |
| EP1834801A1 (en) | 2006-03-17 | 2007-09-19 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, as well as reversible thermosensitive recording label, reversible thermosensitive recording member, image processing apparatus and image processing method |
| EP1854638A1 (en) | 2006-05-08 | 2007-11-14 | Ricoh Company, Ltd. | Reversible thermosensitive coloring material and reversible thermosensitive recording material using the same |
| US7371708B2 (en) | 2004-01-08 | 2008-05-13 | Ricoh Company, Ltd. | Thermoreversible recording medium, thermoreversible recording label and thermoreversible recording member, and, image processing apparatus and image processing method |
| US7432223B2 (en) | 2003-12-18 | 2008-10-07 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, information storage material, reversible thermosensitive recording label, image processing method and image processing device |
| EP2036735A1 (en) | 2007-09-13 | 2009-03-18 | Ricoh Company, Ltd. | Image processing method and image processing apparatus |
| EP2077188A2 (en) | 2007-12-28 | 2009-07-08 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium |
| US7560415B2 (en) | 2002-11-06 | 2009-07-14 | Sony Corporation | Reversible multicolor recording medium and recording method using it |
| EP2100743A1 (en) | 2008-02-13 | 2009-09-16 | Ricoh Company, Ltd. | Image processing method and image processing apparatus |
| EP2103445A1 (en) | 2008-03-18 | 2009-09-23 | Ricoh Company, Ltd. | Heat resistance improver and reversible thermosensitive recording medium |
| EP2159063A2 (en) | 2008-08-28 | 2010-03-03 | Ricoh Co., Ltd. | Image processing method and image processing apparatus |
| EP2264652A1 (en) | 2009-06-09 | 2010-12-22 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium and method for producing the same |
| EP2361783A1 (en) | 2010-02-23 | 2011-08-31 | Ricoh Company, Ltd. | thermosensitive recording medium, image recording method and image processing method |
| EP2365466A2 (en) | 2010-03-09 | 2011-09-14 | Ricoh Company, Limited | Method for producing reversible thermosensitive recording medium, production apparatus for the same, and reversible thermosensitive recording medium |
| EP2490157A2 (en) | 2011-02-16 | 2012-08-22 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium and method for producing the same |
| EP2565045A1 (en) | 2011-09-02 | 2013-03-06 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium |
| JP2021507072A (en) * | 2017-12-21 | 2021-02-22 | ヘクセル コンポジッツ、リミテッド | A curing agent composition and a resin composition containing the curing agent composition. |
-
1989
- 1989-01-18 JP JP1009058A patent/JPH02188293A/en active Pending
Cited By (62)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0418399A1 (en) * | 1989-04-07 | 1991-03-27 | Toppan Printing Co., Ltd. | Composition for reversible thermal recording medium |
| US5900900A (en) * | 1991-01-11 | 1999-05-04 | Ricoh Company, Ltd. | Image recording method using reversible thermosensitive recording material and image display apparatus using the same |
| US5545381A (en) * | 1991-01-31 | 1996-08-13 | Ricoh Company, Ltd. | Device for regenerating printed sheet-like recording medium |
| USRE37197E1 (en) * | 1991-01-31 | 2001-05-29 | Ricoh Company, Ltd. | Device for regenerating printed sheet-like recording medium |
| US5612766A (en) * | 1991-01-31 | 1997-03-18 | Ricoh Company, Ltd. | Device for regenerating printed sheet-like recording medium |
| JPH05309915A (en) * | 1992-05-11 | 1993-11-22 | Sliontec:Kk | Method for controlling reversible thermal recording apparatus |
| USRE36963E (en) * | 1992-08-31 | 2000-11-21 | Ricoh Company, Ltd. | Method and apparatus for regenerating image holding member |
| US5605777A (en) * | 1992-08-31 | 1997-02-25 | Ricoh Company, Ltd. | Method and apparatus for regenerating image holding member |
| US5753400A (en) * | 1993-09-22 | 1998-05-19 | Ricoh Company, Ltd. | Method for repeatedly using image holding member |
| US6095164A (en) * | 1993-09-22 | 2000-08-01 | Ricoh Company, Ltd. | Method and apparatus for removing image forming substance from image holding member |
| US5896612A (en) * | 1994-02-28 | 1999-04-27 | Ricoh Company, Ltd. | Method and apparatus for removing image forming substance from image holding member |
| US5642550A (en) * | 1994-02-28 | 1997-07-01 | Ricoh Company, Ltd. | Apparatus for removing image forming substance from image holding member |
| US6156127A (en) * | 1994-02-28 | 2000-12-05 | Ricoh Company, Ltd. | Method and apparatus for removing image forming substance from image holding member |
| US5547500A (en) * | 1994-03-24 | 1996-08-20 | Ricoh Company, Ltd. | Reversible thermal coloring compositions, and recording media and methods using the same |
| EP0701905A1 (en) | 1994-09-14 | 1996-03-20 | New Oji Paper Co., Ltd. | Thermosensitive reversible colordeveloping and disappearing agent |
| US5702850A (en) * | 1994-09-14 | 1997-12-30 | New Oji Paper Co., Ltd. | Thermosensitive reversible color-developing and disappearing agent |
| US5574538A (en) * | 1994-09-26 | 1996-11-12 | Ricoh Company, Ltd. | Method and apparatus for removing image forming substance from image holding member forming processing situation mark |
| USRE37645E1 (en) | 1994-09-26 | 2002-04-09 | Ricoh Company, Ltd. | Method and apparatus for removing image forming substance from image holding member forming processing situation mark |
| US6143091A (en) * | 1994-10-14 | 2000-11-07 | Ricoh Company, Ltd. | Method for removing a substance deposited on a sheet |
| US5735009A (en) * | 1994-10-14 | 1998-04-07 | Ricoh Company, Ltd. | Device for removing a substance deposited on a sheet |
| US5813344A (en) * | 1994-10-24 | 1998-09-29 | Ricoh Company, Ltd. | Method and apparatus for removing image forming substance from image holding member |
| US5710094A (en) * | 1994-10-27 | 1998-01-20 | Nippon Paper Industries Co. Ltd. | Reversible multi-color thermal recording medium |
| US5977020A (en) * | 1997-07-17 | 1999-11-02 | Oji Paper Co., Ltd. | Thermosensitive reversible recording material |
| US6177383B1 (en) | 1998-03-23 | 2001-01-23 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, and image forming and erasing method |
| US6261992B1 (en) | 1998-09-29 | 2001-07-17 | Ricoh Company, Ltd. | Reversible thermosensitive recording material and recording method and apparatus therefor |
| US6291117B1 (en) | 1999-07-22 | 2001-09-18 | Mitsubishi Paper Mills Ltd. | Reversible heat-sensitive recording material |
| US6579826B2 (en) | 2000-10-10 | 2003-06-17 | Ricoh Company Limited | Reversible thermosensitive recording medium and image forming and erasing method using the recording medium |
| US6734138B2 (en) | 2000-11-30 | 2004-05-11 | Ricoh Company, Ltd. | Reversible thermosensitive recording material, and image recording and erasing method using the recording material |
| US6770592B2 (en) | 2001-02-26 | 2004-08-03 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium and image processing method using the same |
| WO2003091041A1 (en) | 2002-04-23 | 2003-11-06 | Ricoh Company, Ltd. | Information recording/displaying card, image processing method using same, and image processor |
| US6969695B2 (en) | 2002-04-23 | 2005-11-29 | Ricoh Company, Ltd. | Information recording-displaying card, image processing method using same, and image processor |
| US6989349B2 (en) | 2002-04-23 | 2006-01-24 | Ricoh Company, Ltd. | Information recording-displaying card, image processing method using same, and image processor |
| US6995116B2 (en) | 2002-08-19 | 2006-02-07 | Sony Corporation | Reversible multicolor recording medium, and recording method using the same |
| EP1391314A2 (en) | 2002-08-19 | 2004-02-25 | Sony Corporation | Reversible multicolor recording medium and recording method using the same |
| US7560415B2 (en) | 2002-11-06 | 2009-07-14 | Sony Corporation | Reversible multicolor recording medium and recording method using it |
| WO2004082955A1 (en) | 2003-03-20 | 2004-09-30 | Ricoh Company, Ltd. | Reversible thermal recording medium |
| US7238642B2 (en) | 2003-06-25 | 2007-07-03 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, label and member, and, image processing apparatus and method |
| US7585813B2 (en) | 2003-06-25 | 2009-09-08 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, label and member, and image processing apparatus and method |
| US7432223B2 (en) | 2003-12-18 | 2008-10-07 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, information storage material, reversible thermosensitive recording label, image processing method and image processing device |
| US7371708B2 (en) | 2004-01-08 | 2008-05-13 | Ricoh Company, Ltd. | Thermoreversible recording medium, thermoreversible recording label and thermoreversible recording member, and, image processing apparatus and image processing method |
| US7338919B2 (en) | 2004-03-03 | 2008-03-04 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium and device, and image processing method and apparatus using the reversible thermosensitive recording medium |
| EP1571005A1 (en) | 2004-03-03 | 2005-09-07 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, imaging device and imaging method |
| WO2006006725A1 (en) | 2004-07-13 | 2006-01-19 | Ricoh Company, Ltd. | Phenol compound, reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and image-processing method |
| US7456132B2 (en) | 2004-07-13 | 2008-11-25 | Ricoh Company, Ltd. | Phenol compound, reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and imaging-processing method |
| US7452847B2 (en) | 2004-11-02 | 2008-11-18 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording device, image processing apparatus, and image processing method |
| EP1669208A1 (en) | 2004-11-02 | 2006-06-14 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, label, apparatus, and method |
| US7732373B2 (en) | 2006-03-17 | 2010-06-08 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, as well as reversible thermosensitive recording label, reversible thermosensitive recording member, image processing apparatus and image processing method |
| EP1834801A1 (en) | 2006-03-17 | 2007-09-19 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium, as well as reversible thermosensitive recording label, reversible thermosensitive recording member, image processing apparatus and image processing method |
| EP1854638A1 (en) | 2006-05-08 | 2007-11-14 | Ricoh Company, Ltd. | Reversible thermosensitive coloring material and reversible thermosensitive recording material using the same |
| US7419934B2 (en) | 2006-05-08 | 2008-09-02 | Ricoh Company Limited | Reversible thermosensitive coloring material and reversible thermosensitive recording material using the reversible thermosensitive coloring material |
| EP2036735A1 (en) | 2007-09-13 | 2009-03-18 | Ricoh Company, Ltd. | Image processing method and image processing apparatus |
| EP2077188A2 (en) | 2007-12-28 | 2009-07-08 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium |
| EP2100743A1 (en) | 2008-02-13 | 2009-09-16 | Ricoh Company, Ltd. | Image processing method and image processing apparatus |
| EP2103445A1 (en) | 2008-03-18 | 2009-09-23 | Ricoh Company, Ltd. | Heat resistance improver and reversible thermosensitive recording medium |
| EP2159063A2 (en) | 2008-08-28 | 2010-03-03 | Ricoh Co., Ltd. | Image processing method and image processing apparatus |
| EP2264652A1 (en) | 2009-06-09 | 2010-12-22 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium and method for producing the same |
| EP2361783A1 (en) | 2010-02-23 | 2011-08-31 | Ricoh Company, Ltd. | thermosensitive recording medium, image recording method and image processing method |
| EP2365466A2 (en) | 2010-03-09 | 2011-09-14 | Ricoh Company, Limited | Method for producing reversible thermosensitive recording medium, production apparatus for the same, and reversible thermosensitive recording medium |
| EP2490157A2 (en) | 2011-02-16 | 2012-08-22 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium and method for producing the same |
| EP2565045A1 (en) | 2011-09-02 | 2013-03-06 | Ricoh Company, Ltd. | Reversible thermosensitive recording medium |
| JP2021507072A (en) * | 2017-12-21 | 2021-02-22 | ヘクセル コンポジッツ、リミテッド | A curing agent composition and a resin composition containing the curing agent composition. |
| US11702516B2 (en) * | 2017-12-21 | 2023-07-18 | Hexcel Composites Limited | Curative composition and a resin composition containing the curative composition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH02188293A (en) | Reversible thermosensitive recording medium | |
| JPH02188294A (en) | Reversible thermosensitive recording medium | |
| EP0418399B1 (en) | Composition for reversible thermal recording medium | |
| JPS60235B2 (en) | Thermal transfer recording material | |
| JPH05297627A (en) | Erasable recording material | |
| JPH089270B2 (en) | Reversible thermosensitive coloring / erasing composition | |
| JPH0781236A (en) | Heat color vanishing composition and recording medium and ink utilizing thereof and image vanishing method | |
| JPH06191151A (en) | Reversible heat sensitive recording composition and reversible heat sensitive recording sheet | |
| JP2503762B2 (en) | Reversible thermosensitive recording medium composition | |
| JPS63315290A (en) | Thermal recording material | |
| JPH07110939B2 (en) | Reversible thermosensitive coloring / erasing composition | |
| JP3836901B2 (en) | Reversible thermosensitive recording medium and method for producing the same | |
| JP2011194862A (en) | Thermochromic printed matter | |
| JPH07115541B2 (en) | Reversible thermosensitive recording material | |
| JP4149180B2 (en) | Reversible thermosensitive recording medium | |
| JPH0414494A (en) | Printed matter | |
| JP2595768B2 (en) | Image forming medium | |
| JPH10329421A (en) | Reversible thermal recording material | |
| JP4632603B2 (en) | Reversible thermosensitive recording medium | |
| JP4746195B2 (en) | Reversible thermosensitive recording medium | |
| JPH04318077A (en) | Ink for ink jet recording, method for ink jet recording and color development of recorded image | |
| JPH04303680A (en) | Reversibly fluorescence producing and erasing thermal recording medium | |
| JPH0911618A (en) | Reversible thermal recording composition and reversible thermal recording sheet using the same | |
| JPH07112579A (en) | Reversible thermal recording material | |
| JPH0648028A (en) | Reversible thermal recording material |