JPS62220384A - Production of thermal recording paper - Google Patents
Production of thermal recording paperInfo
- Publication number
- JPS62220384A JPS62220384A JP61064412A JP6441286A JPS62220384A JP S62220384 A JPS62220384 A JP S62220384A JP 61064412 A JP61064412 A JP 61064412A JP 6441286 A JP6441286 A JP 6441286A JP S62220384 A JPS62220384 A JP S62220384A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- recording paper
- recording layer
- paper
- hard
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229920001875 Ebonite Polymers 0.000 claims abstract description 4
- 238000009499 grossing Methods 0.000 claims description 30
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 15
- 238000011161 development Methods 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 6
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000243 solution Substances 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
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- IDCBOTIENDVCBQ-UHFFFAOYSA-N TEPP Chemical compound CCOP(=O)(OCC)OP(=O)(OCC)OCC IDCBOTIENDVCBQ-UHFFFAOYSA-N 0.000 description 1
- 235000001484 Trigonella foenum graecum Nutrition 0.000 description 1
- 244000250129 Trigonella foenum graecum Species 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000010425 asbestos Substances 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
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229940037312 stearamide Drugs 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000002268 wool Anatomy 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
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、感熱記録紙の製造方法に関し、特に不要な発
色ムラを伴うことなく高速記録適性を有する感熱記録紙
を極めて効率良く製造する方法に関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for producing thermal recording paper, and in particular, a method for extremely efficiently producing thermosensitive recording paper that is suitable for high-speed recording without causing unnecessary color unevenness. It is related to.
（従来技術）
感熱記録紙とは、熱エネルギーによる物質の物理的、化
学的変化を利用して画像を得るもので非常に多くのプロ
セスが研究されている。最近、感熱記録紙が一次発色で
あること、現像工程が不要であること等の特長を生かし
、ファクシミリのアウトプット、コンビ１−夕用のアウ
トプットとして用いられるようになっている。これらの
多くは、染料タイプと呼ばれるもので、特公昭４３−４
１６０号、特公昭４５−１４０３９号、特開昭５５−２
７２５３号等に開示されている。(Prior Art) Thermosensitive recording paper is a device that obtains images by utilizing physical and chemical changes in substances caused by thermal energy, and a large number of processes are being studied. Recently, thermosensitive recording paper has come to be used as output for facsimiles and duplexes, taking advantage of its features such as primary color development and no need for a developing process. Many of these are called dye types, and are
No. 160, Japanese Patent Publication No. 45-14039, Japanese Patent Publication No. 55-2
It is disclosed in No. 7253 and the like.
一般に感熱記録紙を記録用紙として用いた場合、佐
記ｍ装＋ｅｔが＠量、小型化できる利点があり、近来急
速に利用されるようになってきた〇一方、感熱記録紙の
欠点として、その紀録速厩が十分＾〈できないことがあ
げられる。これは、記録エネルギーが熱であるため、記
ｋｋ素子の応答速度に限界があることによる。この欠点
を克服するために種々の努力が記録装＃側及び記録紙側
の両面から払われてきた。その一つとして感熱記録紙の
表面の平滑性を上げることがあげられ、具体的には、平
滑化装＠ＶＣよる処理いわゆるカレンダー処理が行われ
てきた。In general, when thermal recording paper is used as recording paper, it has the advantage of being able to be made smaller and more compact, and has rapidly come into use in recent years.On the other hand, the disadvantages of thermal recording paper are: There are some things that the Kikusoku stable is not good enough for. This is because the recording energy is heat, so there is a limit to the response speed of the kk element. In order to overcome this drawback, various efforts have been made from both the recording device side and the recording paper side. One of the methods is to increase the smoothness of the surface of heat-sensitive recording paper, and specifically, treatment using a smoothing device @VC, so-called calender treatment, has been carried out.
平滑化装置は、通常、硬質ロール（金属ロール）と弾性
ロールを交１多段に架設した状、四が、最下段のロール
が駆動モータからの駆動を受けて機械的に回転され、直
上のロールを摩擦によって順次駆動するようになってい
る。紙匹は、この頂部ロールから下方へ向けて谷ニップ
間を通過する際に、圧力と摩擦を受けて表面が平滑に仕
上げられることになる。A smoothing device usually has a structure in which hard rolls (metal rolls) and elastic rolls are installed in multiple stages, with the lowest roll mechanically rotated by a drive motor, and the roll directly above are sequentially driven by friction. As the paper web passes downward from the top roll through the valley nips, it is subjected to pressure and friction, resulting in a smooth surface finish.
通常の平滑化装置がこのように垂直に設置される理由は
、王にロールの自ｔをそのまま直下のロールに負荷させ
、下段に向はノ唄次累積されるロールの荷Ｎを紙匹の平
滑化のために有効に利用しようという配慮からである。The reason why a normal smoothing device is installed vertically like this is that the load of the roll is directly applied to the roll directly below it, and the load N of the rolls accumulated in the lower row is transferred to the paper web. This is from the consideration of using it effectively for smoothing.
ところが、感熱記録紙のように低圧による平滑化処理を
必要とする場合には、ロールの自重は、そのまま直下の
ロールに負荷されるから、ニップ圧は最低でも累積され
たら一ルの自重分はかかることになり、記録層全面にわ
たって、不要な発色ムラを発生させる結果となっていた
０
また、弾性ロールは、材質がコツトン、ウール、化学繊
維、ペーパー、アスベスト等で作られているため柔かく
、紙匹にしわがあったり、紙切れした時等は、ロールに
極めて湯がつき易いものである。ロール傷をその１ま放
置したのでは紙を通例すると湯をますます拡大すること
になる。その補修のため、ロール１に取りはずさなけれ
ばならず、そのため必然的に運転を一旦中正しなければ
ならず、効率的に感熱記録紙を製造できない問題があっ
た。However, in cases such as thermal recording paper that require smoothing treatment using low pressure, the weight of the roll is directly applied to the roll directly below it, so the nip pressure is at least equal to the weight of one gram when accumulated. This resulted in unnecessary color unevenness occurring over the entire surface of the recording layer.In addition, since the elastic roll is made of cotton, wool, chemical fiber, paper, asbestos, etc., it is soft. When the paper roll is wrinkled or torn, the roll is extremely susceptible to hot water. If roll scratches are left untreated, the paper will be exposed to even more water. For repair, the roll 1 had to be removed, and therefore the operation had to be temporarily corrected, posing a problem that it was not possible to efficiently produce thermal recording paper.
（発明の目的）
本発明の目的は、不安な発色ムラのない記録濃度の優れ
た感熱記録紙を効率良く製造てる方法を提供することで
ある。(Objective of the Invention) An object of the present invention is to provide a method for efficiently producing thermal recording paper with excellent recording density and free from disturbing color unevenness.
（本発明の構成）
本発明者は、特に不要な発色ムラを伴うことなく記録層
表面の適切な平滑化処理を効率的に行う方法を開発丁べ
く鋭意研究を重ねた。特に平滑化装置の加圧機構、ロー
ルの構成、及び材質さらには記録層の組成についてまで
総合的な検討を重ねた結果、回転駆動機能を備えた固定
式硬質ロールの両板軸方向に弾性ロールと硬質ロールを
少なくとも一組ずつ配した平滑化装置により記録層表面
が硬質ロール面に接触するように通紙せしめて平滑化処
理をすることにより、さらに弾性ロールの材質として７
０〜９０度のショアーＤ硬度（ＡｅｌＴＭ規格、１）−
２２４０）の硬質ゴムを使用し、記録層表面のペック平
滑度を１５０秒以上とすることにより、不要な発色ムラ
を伴うことなく高速記録適性を有する感熱記録紙を極め
て効率良く製造する方法を見出した。(Structure of the Present Invention) The present inventor has conducted extensive research in order to develop a method for efficiently performing appropriate smoothing treatment on the surface of the recording layer without causing unnecessary uneven color development. In particular, as a result of comprehensive consideration of the pressure mechanism of the smoothing device, the configuration of the rolls, the material, and even the composition of the recording layer, we found that the elastic rolls on both sides of the fixed hard roll with rotational drive function were installed in the axial direction. By smoothing the paper by passing the paper through a smoothing device equipped with at least one set of hard rolls and hard rolls so that the surface of the recording layer comes into contact with the hard roll surface, the material of the elastic rolls is 7.
Shore D hardness from 0 to 90 degrees (AelTM standard, 1) -
2240) hard rubber and the Peck smoothness of the surface of the recording layer is 150 seconds or more, we have found a method to extremely efficiently produce heat-sensitive recording paper that is suitable for high-speed recording without causing unnecessary color unevenness. Ta.
本発明の方法において用いられる回転駆動機能を備えた
固定式硬質ロールの両板軸方向に弾性ロールと硬質ロー
ルを少なくとも一組ずつ配した平滑化装置は、第１図の
如くｌは回転駆動機能を備えた固定式硬質ロール、２は
弾性ロール、３は硬質ロールである。固定式硬質ロール
ｌは金属製であり、移動しないという意味で固定式であ
って、モータの駆動を受けて回転、駆動はする。この駆
動によってその両板軸方向に配した弾性ロール２及び硬
質ロール３は固定式硬質ロール１に接触したときに駆動
できるようになっている。弾性ロール２は固定式硬質ロ
ールｌの側面に接離可能に設置されている。硬質ロール
３は金属製であり、弾性ロール２の一方の側面に接離可
能に設置されている。上記の構成は、本発明の基本的な
条件であり、必要に応じて硬質ロール３の一方の側面に
更に別の弾性ロールを設置することもできる。又、ガイ
ドロール４は必要に応じ、適宜必要な場所に設置丁れば
よい。The smoothing device used in the method of the present invention is composed of at least one set of elastic rolls and hard rolls arranged in the axial direction of both plates of a fixed hard roll equipped with a rotational drive function, as shown in FIG. 2 is an elastic roll, and 3 is a hard roll. The fixed hard roll l is made of metal and is fixed in the sense that it does not move, but is rotated and driven by a motor. By this driving, the elastic roll 2 and the hard roll 3 arranged in the axial direction of both plates can be driven when they come into contact with the fixed hard roll 1. The elastic roll 2 is installed on the side surface of the fixed hard roll 1 so as to be able to approach and separate from it. The hard roll 3 is made of metal and is installed on one side of the elastic roll 2 so as to be able to approach and separate from it. The above configuration is a basic condition of the present invention, and another elastic roll may be installed on one side of the hard roll 3 if necessary. Further, the guide roll 4 may be installed at an appropriate location as required.
したがって、平滑化処理をするには、固定式硬質ロール
ｌの一方の側面（第１図では上側）に配したロール群を
接触させて使用することになる。Therefore, in order to perform the smoothing treatment, a group of rolls arranged on one side (the upper side in FIG. 1) of the fixed hard roll l are used in contact with each other.
この間、一方の側面（、ｉｇＩ図では下１）ＩＩｌ）に
配したロール群は各々分離させた状態にして休Ｉとさせ
ておくことになる。また、上側ロール群と下側ロールを
洋を同時に使用することはもちろん可能である０
而して本発明に使用する平滑化装置は、上記したような
構成であるため、低圧による平滑化処理を必要とする場
合には、特に効果的である。ロールの配置が縦軸方向で
あるが、ロールの自重を上下に分割しているため、ニッ
プ圧をロール一本分の自重分のみとすることも可能であ
る。従って、単に表面をならす程度でペック平滑が１５
０秒以上となる場合には誠に好都合である。また、エラ
グ間の４Ｉｉ！も大巾に軽減さｎるため、高感反の感熱
記録紙でも平滑化処理による不要な発色ムラを生じるこ
ともなくなる。During this time, the roll groups arranged on one side (lower 1 in the igI diagram) are kept separated and rested. Furthermore, it is of course possible to use the upper roll group and the lower roll group at the same time.However, since the smoothing device used in the present invention has the above-mentioned configuration, it is possible to perform smoothing processing using low pressure. Particularly effective when needed. Although the rolls are arranged in the vertical axis direction, since the weight of the roll is divided into upper and lower parts, it is also possible to set the nip pressure to only the weight of one roll. Therefore, by simply smoothing the surface, the Peck smoothness is 15
It is very convenient if the time is 0 seconds or more. Also, 4Ii between Erag! Since the amount of color is greatly reduced, unnecessary color unevenness due to smoothing treatment is no longer caused even with highly sensitive thermal recording paper.
平滑化処理中に、もし上側にある弾性ロールに傷が発生
すると、第２図のように上側の各ロールを固定式硬質ロ
ールｌとの接触から分離させると同時に休止中の下側ロ
ール群を固定式硬質ロール１に接触させて、平滑化処理
を上側から下側ヘスイツチして行なうことになる。この
間、上側の傷ついた弾性ロールは取りはずして補修する
ことになる。このように本発明に使用する平滑化％置は
固定式硬質ロールｌを中心に上側と下側を父互に使用す
ることができるため、感熱記録紙の平滑化処理を効率良
く行なうことができる。If a scratch occurs on the upper elastic roll during the smoothing process, the upper rolls are separated from contact with the fixed hard roll l, as shown in Figure 2, and at the same time the rest of the lower roll group is removed. The smoothing process is carried out by contacting the fixed hard roll 1 and switching from the upper side to the lower side. During this time, the damaged upper elastic roll will be removed and repaired. As described above, since the smoothing percentage position used in the present invention can be used alternately on the upper and lower sides of the fixed hard roll l, it is possible to efficiently smoothen heat-sensitive recording paper. .
本発明の方法において用いられる弾性ロールは、Ａ ８
Ｔ’ ＭｆＪ４．格、Ｄ−２２４０で規定されるシ■
アーＤ＠！度が７０〜９０度であり、弾性体については
硬度が上記特定の範囲に入る限り、特に限定されるもの
ではなく、例えば天然ゴム、スチレンゴム、ニトリルゴ
ム、クロロプレンゴム、クロロスルホン化エチレンゴム
、ブチルゴム、多硫化ゴム、シリコンゴム、フッ素ゴム
、ウレタンゴム、各種フラスチック樹脂、コツトン、ペ
ーパー、ｔ：）−ル、テトロン、ナイロンあるいはこれ
らの混合物等が具体例として挙げられる。The elastic roll used in the method of the present invention is A8
T'MfJ4. case, the system specified in D-2240
Ah D@! The elastic material is not particularly limited as long as the hardness falls within the above specified range, such as natural rubber, styrene rubber, nitrile rubber, chloroprene rubber, chlorosulfonated ethylene rubber, Specific examples include butyl rubber, polysulfide rubber, silicone rubber, fluororubber, urethane rubber, various plastic resins, cotton, paper, t:)-ru, tetron, nylon, and mixtures thereof.
上記の如き特定の弾性ロール島加圧エッグを構成する金
属ロールについては、符に限定されるものではなく、通
常の平滑化装置で用いられるチルドロール、合金チルド
ロール、：＃ＳＷロール、さらにはロール表面を硬質ク
ロムメッキした金属ロール等が適宜選択して用いられる
。加圧装置の形螺、加圧ニップの数等も通常の平滑化装
置に準じて適宜ｖ４節されるものであるが、充分な高速
記録適性を得るべく記録層表面のペック平滑度が１５０
秒以上となるように調節する必要がある。The metal rolls constituting the specific elastic roll island pressurized egg as described above are not limited to the following, but include chilled rolls, alloy chilled rolls, #SW rolls, and even #SW rolls used in ordinary smoothing equipment. A metal roll whose surface is plated with hard chrome is appropriately selected and used. The shape of the pressurizing device, the number of pressurizing nips, etc. are appropriately set to v4 according to the normal smoothing device, but in order to obtain sufficient high-speed recording suitability, the Peck smoothness of the recording layer surface is 150.
It is necessary to adjust the time so that it is longer than seconds.
而して、本発明の方法においては、加圧ニップに感熱記
録紙を記録層表面が金属ロール面に接触するように通紙
せしめ、該記録層表面のペック平滑度が１５０秒以上と
なるよう平滑化処理するものであるが、その際の加圧条
件は用いられる弾性ロールの硬度、記録紙の種類、その
他スピード、ニップ数、温度条件等々の各種処理条件な
どに応じて適宜調節される。従って、−概には規定でき
ないが一般にニップ線圧として３０〜１５０す／１の範
囲で請願てるのが望ましい。In the method of the present invention, heat-sensitive recording paper is passed through a pressure nip so that the surface of the recording layer is in contact with the metal roll surface, and the Peck smoothness of the surface of the recording layer is 150 seconds or more. The smoothing process is carried out, and the pressure conditions at that time are adjusted as appropriate depending on the hardness of the elastic roll used, the type of recording paper, and various processing conditions such as speed, number of nips, temperature conditions, etc. Therefore, it is generally desirable that the nip linear pressure be within the range of 30 to 150 S/1, although it cannot be generally specified.
かくして、本発明の方法によれば、高速記録に適するよ
うに著しく記録感度を尚めた組成から成る記録層を有す
る感熱記録Ｉ−であっても、不要な発色ムラを生じるこ
となく記ｆｉ／−表面の平滑化処理が可能となり、一層
′高速記録適性の改良された感熱記録紙が極めて効率良
く製造されるものである０
本発明の方法で平滑化処理されるｇ熱記録紙については
特に限定されるものではないが、一般的製法としては、
感熱塗液を原紙上に塗布するが、ｇ熱塗液として具体的
には、ポリビニルアルコール水溶液中に、クリスタルバ
イオレットラクトンの如き電子供与性無色染料と、２．
２−ビス（４−ヒドロキシフェニル）プロパンの３口き
電子受容性化合物を数ミクロン以下の微粒子として分散
させたものなどがあり、これらの製法については、先に
述べた特許及び、特開昭５５−９３４９２号特開昭５５
−１４２８１号等に記載されている０感熱塗液中に含有
さｎる分散粒子は、偉績平均粒径が８ｊｍ以下、さらに
は４ｐｍ以下であることが好ましい０その理由は、一般
に感熱記録層は、５ないし１０μｍの厚さで塗工される
ことが多く粗大粒子が含有されていると、本発明の平滑
化処理を行っても充分な効果ガ得られないためである。Thus, according to the method of the present invention, even if the thermal recording layer I- has a recording layer having a composition whose recording sensitivity is significantly improved to make it suitable for high-speed recording, it can be recorded without causing unnecessary color unevenness. - Surface smoothing treatment is now possible, and thermal recording paper with improved suitability for high-speed recording can be manufactured extremely efficiently. Although not limited to, general manufacturing methods include:
A heat-sensitive coating liquid is applied onto the base paper. Specifically, the heat-sensitive coating liquid consists of an electron-donating colorless dye such as crystal violet lactone in an aqueous polyvinyl alcohol solution, and 2.
There are products in which a three-hole electron-accepting compound of 2-bis(4-hydroxyphenyl)propane is dispersed as fine particles of several microns or less, and the manufacturing method for these is described in the above-mentioned patent and in JP-A-55 -93492 Japanese Patent Application Publication No. 1983
It is preferable that the dispersed particles contained in the heat-sensitive coating liquid have a performance average particle diameter of 8 μm or less, more preferably 4 pm or less.The reason for this is that generally the heat-sensitive recording layer is This is because the coating is often applied to a thickness of 5 to 10 μm, and if coarse particles are contained, sufficient effects cannot be obtained even if the smoothing treatment of the present invention is performed.
（実施例）
以下実施例を示すが、本発明はこれに限定されるもので
はない。また、特に断らない限り例中の部および％はそ
れぞれ重量部および重量％を示で。(Example) Examples will be shown below, but the present invention is not limited thereto. In addition, unless otherwise specified, parts and percentages in examples indicate parts by weight and percentages by weight, respectively.
実施例１
■ Ａ液調成
３−ジエチルアミノ−６−メチル−７−アニリノフルオ
ラン１０部
メチルセルロース５％水溶ｇ １５部水
１０部この組成
物をサンドグラインダーで平均粒子径３ｊｍまで粉砕し
た。Example 1 ■ Preparation of liquid A 3-diethylamino-6-methyl-7-anilinofluorane 10 parts Methylcellulose 5% aqueous solution g 15 parts water
10 parts of this composition was ground with a sand grinder to an average particle size of 3jm.
■ Ｂ液調成
４．４−イソプロピリデンジフェノール ２０部
メチ／ｌ／セルロース５％水浴ｇ ３０部水
２０部こ
の組成＊ｔ−サンドグラインダーで平均粒子径３βｍま
で＃砕した。■ Preparation of B solution 4. 4-isopropylidenediphenol 20 parts methi/l/cellulose 5% water bath g 30 parts water
20 parts of this composition * Grinded with a t-sand grinder to an average particle size of 3βm.
■ 記録ノーの形成
Ａ液３０部、８７夜７０部、炭酸カルシウム（白石工業
（綱要、炭カルｐｏ ）２０部、２０％ステアリン酸ア
マイド分散液４０部、ポリビニルアルコ−ル１５ ％水
溶Ｉｅｉ、１０ Ｄ’部、水２０部を混合、攪（半し塗
液とした。■ Formation of record no 30 parts of liquid A, 70 parts of 87 nights, 20 parts of calcium carbonate (Shiraishi Kogyo Co., Ltd., Sumikarupo), 40 parts of 20% stearamide dispersion, 15% polyvinyl alcohol aqueous solution Iei, 10 Part D' and 20 parts of water were mixed and stirred (half coating liquid was obtained).
この塗液をエアーナイフコーターにより、５０秒のペッ
ク平滑度を有する５０ｇ／−の原紙に乾燥後の塗布量が
７．５１）７ｍ”となるように塗布乾燥した。得られた
感熱記録紙を直径５００鵡の固定式硬質ロールｌと直径
４５０ｇの硬質ロールが硬質クロムメッキロール及び直
径３５０鵡の弾性ロール２がシ漏アーＤ硬度８４度の硬
質ゴムロールより第１図の如く構成された平滑化装置に
より記録層表面が硬質ロールに接触するように通紙し平
滑化処理をして感熱記録紙を得た。This coating liquid was applied and dried on a 50 g/- base paper having a Peck smoothness of 50 seconds using an air knife coater so that the coating amount after drying was 7.51) 7 m''.The obtained thermal recording paper was A smoothing machine consisting of a fixed hard roll 1 with a diameter of 500 g, a hard chrome plated roll with a diameter of 450 g, and a hard rubber roll with a sear D hardness of 84 degrees as an elastic roll 2 with a diameter of 350 g, as shown in Figure 1. The paper was passed through a device so that the surface of the recording layer came into contact with a hard roll, and a smoothing treatment was performed to obtain a heat-sensitive recording paper.
比較例１
実施的１の平滑化装置の弾性ロールを鋼鉄金属ロール（
シ鐙アーＤ硬度１００ｍ）に置°侯る以外は実施例１と
四様にして感熱記録紙を得た。Comparative Example 1 The elastic roll of the smoothing device of Example 1 was replaced with a steel metal roll (
A thermosensitive recording paper was obtained in the same manner as in Example 1 except that the paper was placed in a stirrup (D hardness: 100 m).
かくして、得られた３ａＩ類の感熱記録紙について、記
録層表面のペック平滑度及び印字濃度、不要々発色ムラ
（カプリ）の比較テストを行い総合判定も含め、その結
果を表に示した。なお、印字濃度は松下電子部品■裏フ
ァクシミリ試験機にてパルス巾２．０ ミ＋）秒での発
色濃度をマクベス閾度計（マクベス社製、凡Ｄ−５１４
型）により測定した。不要々発色ムラについては紙面の
部分的な白色度低下の程度を目視判定した。なお、不要
な発色ムラ、総合判定の評価基準は下記のとおりである
。The 3aI type heat-sensitive recording paper thus obtained was subjected to a comparative test for Peck smoothness of the surface of the recording layer, print density, and unnecessary coloring unevenness (capri), and the results, including an overall evaluation, are shown in the table. The print density was measured using a Matsushita Electronics Parts facsimile tester with a pulse width of 2.0 microseconds using a Macbeth threshold meter (manufactured by Macbeth Co., Ltd., D-514).
(type). Regarding unnecessary unevenness in color development, the degree of partial decrease in whiteness on the paper surface was visually determined. The evaluation criteria for unnecessary uneven color development and comprehensive evaluation are as follows.
ｌ： 優れている。l: Excellent.
２：晋通
（発明の効果）
本発明の感熱記録紙の嬰造方法により、不要な発色ムラ
のかい高速記録適性を有する感熱記録紙を極めて効率良
く製造することができた。2: Shintoshi (Effects of the Invention) By the method for producing thermal recording paper of the present invention, it was possible to produce extremely efficiently a thermal recording paper that is free from unnecessary uneven color development and is suitable for high-speed recording.
第１図は、本発明に使用する平滑化装置で、感熱記録紙
を一方の１）１）Ｉ（上ｆｕｌｌ ）で平滑化処理して
いる状標を示した側面図である。′ｊ４２図は、弾性ロ
ール２に鴻が生じたとき、他方の１）１） （下側）へ
、スイッチして平滑化処理している状帽を示したｊｕ１
）面図であるＯ
１・・・・・・回転駆動機能を備えた固定式硬質ロール
２・・・・・・弾性ロール
３・・・・・・硬質ロール
４・・・・・・ガイドロール
５・・・・・・感熱記録紙
第２図FIG. 1 is a side view showing a state in which heat-sensitive recording paper is being smoothed by one side 1) 1) I (upper full) in the smoothing apparatus used in the present invention. Fig. 42 shows the shape of the elastic roll 2 that is smoothed by switching to the other 1) 1) (lower side) when mold occurs on the elastic roll 2.
) Side view 1...Fixed hard roll with rotational drive function 2...Elastic roll 3...Hard roll 4...Guide roll 5...Thermal recording paper Figure 2
Claims (3)
動機能を備えた固定式硬質ロールの両縦軸方向に弾性ロ
ールと硬質ロールを少なくとも一組ずつ配した平滑化装
置に、記録層表面が硬質ロール面に接触するように通紙
せしめて、平滑化処理をすることを特徴とする感熱記録
紙の製造方法。(1) After coating the heat-sensitive recording layer on the paper support and drying it, it is applied to a smoothing device that has at least one set of elastic rolls and hard rolls arranged in both longitudinal axes of a fixed hard roll equipped with a rotational drive function. A method for producing heat-sensitive recording paper, which comprises passing the paper so that the surface of the recording layer comes into contact with the surface of a hard roll, and subjecting the paper to smoothing treatment.
硬度（ＡＳＴＭ規格、Ｄ−２２４０）の硬質ゴムである
特許請求の範囲第（１）項記載の感熱記録紙の製造方法
。(2) The material of the elastic roll is shore D of 70 to 90 degrees.
The method for producing heat-sensitive recording paper according to claim (1), which is a hard rubber having a hardness (ASTM standard, D-2240).
５０秒以上である特許請求の範囲第（１）項記載の感熱
記録紙の製造方法。(3) The Peck smoothness of the recording layer surface after smoothing treatment is 1
The method for producing heat-sensitive recording paper according to claim (1), wherein the heating time is 50 seconds or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61064412A JPS62220384A (en) | 1986-03-20 | 1986-03-20 | Production of thermal recording paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61064412A JPS62220384A (en) | 1986-03-20 | 1986-03-20 | Production of thermal recording paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62220384A true JPS62220384A (en) | 1987-09-28 |
Family
ID=13257553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61064412A Pending JPS62220384A (en) | 1986-03-20 | 1986-03-20 | Production of thermal recording paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62220384A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01288479A (en) * | 1988-05-16 | 1989-11-20 | Kanzaki Paper Mfg Co Ltd | Manufacture of original for pressure-sensitive recording sheet |
| JPH02200888A (en) * | 1989-01-20 | 1990-08-09 | Kanzaki Paper Mfg Co Ltd | Production of double-side coated paper |
| JPH0554599U (en) * | 1991-12-20 | 1993-07-20 | 株式会社金陽社 | Calendar roll for household paper |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57208296A (en) * | 1981-06-19 | 1982-12-21 | Fuji Photo Film Co Ltd | Heat-sensitive recording paper |
| JPS59155094A (en) * | 1983-02-23 | 1984-09-04 | Kanzaki Paper Mfg Co Ltd | Production of thermal recording sheet |
-
1986
- 1986-03-20 JP JP61064412A patent/JPS62220384A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57208296A (en) * | 1981-06-19 | 1982-12-21 | Fuji Photo Film Co Ltd | Heat-sensitive recording paper |
| JPS59155094A (en) * | 1983-02-23 | 1984-09-04 | Kanzaki Paper Mfg Co Ltd | Production of thermal recording sheet |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01288479A (en) * | 1988-05-16 | 1989-11-20 | Kanzaki Paper Mfg Co Ltd | Manufacture of original for pressure-sensitive recording sheet |
| JPH02200888A (en) * | 1989-01-20 | 1990-08-09 | Kanzaki Paper Mfg Co Ltd | Production of double-side coated paper |
| JPH0554599U (en) * | 1991-12-20 | 1993-07-20 | 株式会社金陽社 | Calendar roll for household paper |
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