JP3005076B2 - Transfer paper for electrophotography - Google Patents
Transfer paper for electrophotographyInfo
- Publication number
- JP3005076B2 JP3005076B2 JP3190892A JP19089291A JP3005076B2 JP 3005076 B2 JP3005076 B2 JP 3005076B2 JP 3190892 A JP3190892 A JP 3190892A JP 19089291 A JP19089291 A JP 19089291A JP 3005076 B2 JP3005076 B2 JP 3005076B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- transfer paper
- anionic polyacrylamide
- curl
- electrophotographic transfer
- 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 - Fee Related
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子写真用転写紙に関
するものであり、さらに詳細には、加熱印字後、用紙の
カ−ルやボコツキが少なく、電子写真転写における紙詰
まり等のトラブルが少ない、電子写真用転写紙に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer paper for electrophotography, and more particularly, to a paper having little curl or stiffness after heating and printing, and having trouble such as paper jam in electrophotography transfer. It relates to a small amount of transfer paper for electrophotography.
【０００２】[0002]
【従来の技術】最近、加熱定着式の電子写真転写機やプ
リンター等の印字装置が増加しつつある。この種の印字
装置では、約２００度に加熱したドラムあるいはロ−ラ
−に紙を押し付けることにより、印字したトナ−の定着
が行われるため、紙の含有水分が減少し収縮する。その
際、紙にカ−ルやボコツキが起こり、紙詰まり、排紙ト
レイ収容性不良等のトラブルが発生する。熱定着後、カ
−ルあるいはボコツキは、電子写真転写機やプリンター
等の紙走行性能に大きく影響を与える重要な特性である
といえる。2. Description of the Related Art Recently, printing apparatuses such as heat-fixing type electrophotographic transfer machines and printers are increasing. In this type of printing apparatus, the printed toner is fixed by pressing the paper against a drum or a roller heated to about 200 degrees, so that the water content of the paper decreases and shrinks. At that time, the paper is curled or bumpy, causing troubles such as paper jams and poor discharge tray accommodation. It can be said that after heat fixing, the curl or bumpiness is an important characteristic that greatly affects the paper running performance of an electrophotographic transfer machine or printer.
【０００３】これらのカ−ル及びボコツキ現象には、紙
中の繊維配向の主軸と抄紙方向との偏差が関与している
ことが知られている。繊維の配向方向を整えた紙を製造
する方法として、特公昭５９−２８６７７号公報にはス
トックインレットから吐出される原料表面に糸状物をな
びかせ、原料の射出方向を調節する方法が開示されてい
る。また、特開平２−２１７８６２号公報には、抄速、
スラリ−ジェットと抄網の速度比率（ジェット比）、シ
ェ−キングの強化、フォ−ミングボ−ドの位置、ダンデ
ィ−ロ−ル使用条件等、マシン操作条件の適性化によ
り、音速法で測定した紙中の繊維の配向角が、抄紙機の
流れ方向と抄紙機の幅方向に対して共に±１０．０度以
内で、抄紙機の流れ方向に対して直角方向の超音波伝播
速度と抄紙機の流れ方向の超音波伝播速度の比が１．０
０〜１．２５であることを特徴とした印字加熱定着方式
の転写紙が開示されている。[0003] It is known that the deviation between the main axis of fiber orientation in paper and the papermaking direction is involved in these curl and squealing phenomena. As a method for producing a paper in which the orientation direction of the fibers is adjusted, Japanese Patent Publication No. 59-28677 discloses a method in which a thread is flown on the surface of a raw material discharged from a stock inlet to adjust the injection direction of the raw material. I have. Also, Japanese Patent Application Laid-Open No. Hei 2-217762 discloses a paper making speed,
Measured by the sound velocity method by optimizing the machine operation conditions such as the speed ratio of the slurry jet and the netting (jet ratio), strengthening of the shaking, the position of the forming board, and the conditions of using the dandy roll. The orientation angle of the fiber in the paper is within ± 10.0 degrees in both the machine direction and the machine direction, and the ultrasonic wave propagation velocity in the direction perpendicular to the machine direction and the paper machine. The ratio of the ultrasonic wave propagation velocity in the flow direction is 1.0
There is disclosed a transfer paper of a print heat fixing system characterized by being 0 to 1.25.
【０００４】[0004]
【発明が解決しようとする課題】加熱印字後あるいは高
湿度にさらされた後のカ−ルあるいはボコツキ現象が少
ない電子写真用転写紙を得るためには、紙中における繊
維配向の主軸と抄紙方向との偏差を少なくする必要があ
る。しかし、これのみでの調節には限界があるため、紙
の寸法安定性を改良し、湿度変化に対する紙の変化を少
なくすることが重要であると考えられる。In order to obtain an electrophotographic transfer paper having little curl or bumpiness after heating printing or exposure to high humidity, the main axis of the fiber orientation in the paper and the papermaking direction are required. It is necessary to reduce the deviation from. However, there is a limit to the adjustment by this alone, and it is considered important to improve the dimensional stability of the paper and to reduce the change of the paper with respect to the humidity change.
【０００５】一方、安価な炭酸カルシウムの填料として
の利用、紙の保存性向上などの観点から、中性で紙を抄
く必要が増してきている。これら中性紙には、サイズ性
あるいは強度向上を目的として、０．２〜２．５重量％
のカチオン澱粉を含有させることが行われるため、酸性
紙に比べて寸法安定性が若干劣る。したがって、従来の
酸性紙より寸法安定性改良の必要性が高い。[0005] On the other hand, from the viewpoint of using inexpensive calcium carbonate as a filler and improving the preservability of paper, the necessity of producing neutral paper is increasing. These neutral papers contain 0.2 to 2.5% by weight for the purpose of improving the size and strength.
The dimensional stability is slightly inferior to that of acidic paper because the cationic starch is contained. Therefore, there is a greater need for improved dimensional stability than conventional acidic paper.
【０００６】すなわち、本発明の目的は、繊維の配向角
のみでなく、紙の寸法安定性をも改良することにより、
加熱印字後あるいは高湿度にさらされた後のカ−ルある
いはボコツキ現象が少ない、中性紙からなる電子写真用
転写紙を提供することにある。That is, an object of the present invention is to improve not only the orientation angle of the fiber but also the dimensional stability of the paper.
An object of the present invention is to provide an electrophotographic transfer paper made of neutral paper, which has little curl or bumpiness after heating printing or being exposed to high humidity.
【０００７】[0007]
【課題を解決するための手段】本発明者は、上記目的を
達成するために、カ−ル及びボコツキ現象と密接に関係
すると思われる水分変化に伴う紙の寸法安定性改良に注
目して検討した。その結果、電子写真用転写紙として、
中性紙表面に平均分子量が３×１０3〜１×１０5、好ま
しくは６×１０3〜２×１０4のアニオン性ポリアクリル
アミドを含有する層の設けられた紙を用いると、離解性
をさほど悪くすることなく加熱後及び加湿後のカ−ルあ
るいはボコツキ現象の発生を著しく減少できることを発
見した。離解性は、アニオン性ポリアクリルアミドの平
均分子量が３×１０3〜１×１０5、好ましくは３×１０
3〜２×１０4で表面紙力向上剤を塗布しない場合と比較
した離解性を実用上悪化しない。また、加熱後及び加湿
後のカ−ルは、その平均分子量が３×１０3〜２×１
０5、特に６×１０3〜１×１０5で減少し、ボコツキは
３×１０3〜１×１０5、特に６×１０3〜２×１０4で減
少する。さらに、中性紙両面に塗布される該アニオン性
ポリアクリルアミドの量が、合計で０．０２〜０．２０
ｇ／ｍ2、特に０．０５ｇ／ｍ2〜０．２０ｇ／ｍ2であ
るとカ−ル及びボコツキの発生を著しく減少できること
を発見した。また、中性紙に澱粉特に好ましくは両性澱
粉を内添させるとカ−ル及びボコツキの発生をさらに減
少できることを発見した。本発明者はこれらの発見に基
づき本発明を完成させた。Means for Solving the Problems To achieve the above object, the present inventor has focused on improving the dimensional stability of paper due to a change in water which is considered to be closely related to the curl and squealing phenomenon. did. As a result, as electrophotographic transfer paper,
When a paper having a layer containing an anionic polyacrylamide having an average molecular weight of 3 × 10 3 to 1 × 10 5 , preferably 6 × 10 3 to 2 × 10 4 on a neutral paper surface is used, the disintegration property is reduced. It has been found that the occurrence of the curl or bumpiness after heating and after humidification can be significantly reduced without much worsening. The average molecular weight of the anionic polyacrylamide is 3 × 10 3 to 1 × 10 5 , preferably 3 × 10 5 .
In the range of 3 to 2 × 10 4 , the disintegration in comparison with the case where the surface strength enhancer is not applied is not practically deteriorated. The curl after heating and after humidification has an average molecular weight of 3 × 10 3 to 2 × 1.
0 5 , especially from 6 × 10 3 to 1 × 10 5 , and bumpiness decreases from 3 × 10 3 to 1 × 10 5 , especially from 6 × 10 3 to 2 × 10 4 . Furthermore, the amount of the anionic polyacrylamide applied to both sides of the neutral paper is 0.02 to 0.20 in total.
g / m 2, especially it is 0.05g / m 2 ~0.20g / m 2 months - have found to be able to significantly reduce the occurrence of Le and Bokotsuki. It has also been found that the addition of starch, particularly preferably amphoteric starch, to neutral paper can further reduce the occurrence of curls and bumps. The present inventors have completed the present invention based on these findings.
【０００８】本発明の中性紙は、抽出ｐＨ６〜１０、好
ましくはｐＨ７〜９の中性ないし弱アルカリ性のｐＨ領
域で製造される紙であり、好ましくは澱粉、特に両性澱
粉を好ましくは０．２〜２．０重量％含有する。また、
通常抄紙で用いられる染料、填料、サイズ剤、乾燥紙力
増強剤などを必要に応じて含有するものである。製造に
は、長網抄紙機、ハイブリッドフォーマー、ツインワイ
ヤ−フォ−マ−など種々のタイプの抄紙機を使用でき
る。The neutral paper of the present invention is a paper produced in a neutral to weakly alkaline pH range of extraction pH 6 to 10, preferably pH 7 to 9, and preferably starch, especially amphoteric starch. It contains 2 to 2.0% by weight. Also,
It contains a dye, a filler, a sizing agent, a dry paper strength agent and the like which are usually used in papermaking, if necessary. Various types of paper machines such as fourdrinier paper machines, hybrid formers, and twin-wire formers can be used for production.
【０００９】本発明のアニオン性ポリアクリルアミドと
しては、ポリアクリルアミド内のアミド基を部分的に加
水分解して得られるもの、あるいはアクリルアミドとア
クリル酸との共重合物などが使用できる。なお、アクリ
ル酸の代わりにメタアクリル酸や無水マレイン酸を用い
た共重合物、第３成分としてアクリロニトリルやアクリ
ル酸エステルを含む３元共重合体を用いることも可能で
ある。また、平均分子量としては、３×１０3〜１×１
０5、好ましくは６×１０3〜２×１０4である。本発明
のアニオン性ポリアクリルアミドを酸化澱粉など種々の
変性澱粉、各種ポリビニルアルコ−ルなどと併用塗布す
ることも可能である。As the anionic polyacrylamide of the present invention, those obtained by partially hydrolyzing an amide group in polyacrylamide or a copolymer of acrylamide and acrylic acid can be used. In addition, it is also possible to use a copolymer using methacrylic acid or maleic anhydride instead of acrylic acid, and a terpolymer containing acrylonitrile or acrylate as the third component. The average molecular weight is 3 × 10 3 to 1 × 1.
0 5 , preferably 6 × 10 3 to 2 × 10 4 . It is also possible to apply the anionic polyacrylamide of the present invention in combination with various modified starches such as oxidized starch and various polyvinyl alcohols.
【００１０】アニオン性ポリアクリルアミドの塗布に
は、サイズプレス装置、ロ−ルコ−ター、バ−コ−タ
−、ブレ−ドコ−タ−などの装置を使用することができ
る。また、アニオン性ポリアクリルアミドの塗布量は、
両面で０．０２〜０．２０ｇ／ｍ2、特に０．０５〜
０．２０ｇ／ｍ2が好ましい。塗布量が０．２０ｇ／ｍ2
を超えると寸法安定化のそれ以上の向上が得られないの
みならず、むしろ効果の減少が若干認められる。また、
０．０２ｇ／ｍ2未満では効果を著しく大きくすること
ができない。For application of the anionic polyacrylamide, an apparatus such as a size press, a roll coater, a bar coater, or a blade coater can be used. In addition, the coating amount of the anionic polyacrylamide,
0.02 to 0.20 g / m 2 on both sides, especially 0.05 to
0.20 g / m 2 is preferred. The coating amount is 0.20 g / m 2
If it exceeds, not only no further improvement in dimensional stability can be obtained, but also a slight decrease in the effect is observed. Also,
If it is less than 0.02 g / m 2 , the effect cannot be significantly increased.
【００１１】本発明の電子写真用転写紙は、加熱定着式
の電子写真転写機の用紙、プリンター等の印字装置の用
紙等に使用することができる。本発明の電子写真用転写
紙のカ−ル及びボコツキ現象の評価は、裁断機によりＢ
４サイズにした用紙から試料を５００枚採取し、速度６
０枚／分で給紙する電子写真転写機（ＳＦ−９７５０、
シャ−プ製）に連続的に給紙させ、排紙トレイに出てき
た試料について、カ−ル及びボコツキの状態を視覚によ
り確認することにより行った。カ−ルの程度は、カ−ル
していないものを１とし、わずかにカ−ルしているもの
を２、かなりカ−ルしているものを３とした。ボコツキ
については、５００枚中でボコツキ現象が起きた紙の枚
数を数え、発生率として評価した。加湿時の変化を見る
場合には、試料を３０度、８０％R.Hの条件下に２４時
間放置後、それらの試料について同様の方法で評価し
た。The transfer paper for electrophotography of the present invention can be used as paper for a heat fixing type electrophotographic transfer machine, paper for a printing device such as a printer, and the like. Evaluation of the curl and squealing phenomena of the electrophotographic transfer paper of the present invention was carried out using a cutting machine.
500 samples were taken from the paper sized 4 and the speed 6
An electrophotographic transfer machine that feeds at 0 sheets / minute (SF-9750,
(Manufactured by Sharp Corp.), and the state of the curl and bump was visually confirmed for the sample that came out of the paper discharge tray. The degree of curl was set to 1 for a non-curl, 2 for a slight curl, and 3 for a fairly curl. As for the bumpiness, the number of papers on which the bumping phenomenon occurred out of 500 sheets was counted and evaluated as an occurrence rate. When observing the change during humidification, the samples were allowed to stand at 30 ° C. and 80% RH for 24 hours, and the samples were evaluated in the same manner.
【００１２】中性紙表面に平均分子量が、３×１０3〜
１×１０5、好ましくは６×１０3〜２×１０4のアニオ
ン性ポリアクリルアミドを塗布することにより、加熱印
字後あるいは高湿度にさらされた後、転写紙のカ−ルあ
るいはボコツキ現象が幅方向全ての位置にわたって少な
い、電子写真用転写紙が得られる。ここで、アニオン性
のポリアクリルアミドの表面塗布は、湿度変化時の中性
紙の変形量を制御することに寄与すると考えられる。The average molecular weight on the neutral paper surface is 3 × 10 3-
By applying 1 × 10 5 , preferably 6 × 10 3 to 2 × 10 4 anionic polyacrylamide, after transfer of heat or after exposure to high humidity, the curl or squealing phenomenon of the transfer paper is reduced. A small amount of electrophotographic transfer paper is obtained over all positions in the direction. Here, it is considered that the surface application of the anionic polyacrylamide contributes to controlling the deformation amount of the neutral paper when the humidity changes.
【００１３】[0013]
【実施例】以下に、本発明を実施例により詳細に説明す
る。なお、本発明は、実施例に限定されるものではな
い。以下における、部、％は全て重量によるものであ
る。The present invention will be described below in detail with reference to examples. Note that the present invention is not limited to the embodiments. In the following, all parts and percentages are by weight.
【００１４】実施例１〜５及び比較例１〜２ 濾水度３５０ｍｌまで叩解したＬＢＫＰとＮＢＫＰの重
量比で７：３の混合物１００部に、紙中の含有量が７％
になる量の沈降性炭酸カルシウム（ＴＰ−１２１、奥多
摩工業社製）、アルキルケテンダイマ−サイズ剤（ハ−
コンＷ、ディックハ−キュラス社製）を０．１部、両性
澱粉（ケイト３２１０、王子ナショナル社製）を０．７
部含むスラリ−を用い、抄幅２５００ｍｍ、抄網速度５
００ｍ／分の長網抄紙機により、坪量６４ｇ／ｍ2の紙
を製造した。製造時、抄紙機メインドライヤ−とアフタ
−ドライヤ−の間に設置したサイズプレス装置で、両面
当りの塗布量が０．０５ｇ／ｍ2となるように平均分子
量が２×１０3、３×１０3、８×１０3、２×１０4、１
×１０5及び２×１０5のアニオン性ポリアクリルアミド
を塗布し、電子写真用転写紙とした。これらの試料をそ
れぞれ比較例１、実施例１〜５及び比較例２とする。以
上の結果を表１に記載する。Examples 1 to 5 and Comparative Examples 1 to 2 100 parts of a mixture of LBKP and NBKP in a weight ratio of 7: 3 beaten to a freeness of 350 ml had a content in paper of 7%.
Amount of precipitated calcium carbonate (TP-121, manufactured by Okutama Kogyo KK), alkyl ketene dimer sizing agent (C
0.1 parts of Kon W, Dick Hercules) and 0.7 parts of amphoteric starch (Kate 3210, Oji National)
Using a slurry containing a part, a paper making width of 2500 mm and a net making speed of 5
Paper having a basis weight of 64 g / m 2 was produced by a fourdrinier paper machine of 00 m / min. At the time of production, the average molecular weight was 2 × 10 3 and 3 × 10 with a size press installed between the main dryer and the after-dryer of the paper machine so that the coating amount per side was 0.05 g / m 2. 3 , 8 × 10 3 , 2 × 10 4 , 1
× 10 5 and 2 × 10 5 anionic polyacrylamide were applied to obtain electrophotographic transfer paper. These samples are referred to as Comparative Example 1, Examples 1 to 5 and Comparative Example 2, respectively. Table 1 shows the above results.
【００１５】比較例３〜４ 実施例３と同一のパルプに、填料としてタルク（兵庫ク
レ−社製）を紙中の含有量が７％となるように添加し、
サイズ剤としてロジンサイズ剤（ニュ−ホ−１００、デ
ィックハ−キュレス社製）を０．３部、硫酸バンドを
２．０部添加したスラリ−を用いて酸性紙を抄造した。
この酸性紙に実施例３と同様に平均分子量８×１０3の
アニオン性ポリアクリルアミドを塗布し、比較例３の電
子写真用転写紙を得た。一方、比較例３でアニオン性ポ
リアクリルアミドの代わりに水を塗布し、比較例４の電
子写真用転写紙を得た。以上の結果を表２に記載する。Comparative Examples 3 and 4 To the same pulp as in Example 3, talc (manufactured by Hyogo Cray Co.) was added as a filler so that the content in the paper was 7%.
Acid paper was prepared using a slurry containing 0.3 part of a rosin sizing agent (Newho-100, manufactured by Dick Hercules) and 2.0 parts of a sulfuric acid band.
Anionic polyacrylamide having an average molecular weight of 8 × 10 3 was applied to this acidic paper in the same manner as in Example 3 to obtain an electrophotographic transfer paper of Comparative Example 3. On the other hand, water was applied instead of anionic polyacrylamide in Comparative Example 3 to obtain an electrophotographic transfer paper of Comparative Example 4. Table 2 shows the above results.
【００１６】実施例６〜１０及び比較例５ アニオン性ポリアクリルアミドの塗布量を両面合計で
０．０１、０．０２、０．１０、０．２０及び０．３０
ｇ／ｍ2とする以外は実施例３と同一の条件で電子写真
用転写紙を製造した。これらの試料をそれぞれ実施例６
〜１０とする。また、サイズプレスでアニオン性ポリア
クリルアミドの代わりに水を塗布する以外は実施例３と
同一の条件で電子写真用転写紙を得た。これを比較例５
とする。以上の結果を表３に記載する。Examples 6 to 10 and Comparative Example 5 The amount of anionic polyacrylamide applied was 0.01, 0.02, 0.10, 0.20 and 0.30 in total on both sides.
An electrophotographic transfer paper was manufactured under the same conditions as in Example 3 except that the amount was changed to g / m 2 . Each of these samples was prepared in Example 6.
To 10 An electrophotographic transfer paper was obtained under the same conditions as in Example 3 except that water was applied instead of anionic polyacrylamide by a size press. This was compared with Comparative Example 5
And Table 3 shows the above results.
【００１７】実施例１１〜１６及び比較例６ 実施例３で使用した両性澱粉の代わりにカチオン澱粉
（ケイトＦ、王子ナショナル社製）に変える以外は、実
施例３と同一の条件で電子写真用転写紙を得た。これら
の試料を、アニオン性ポリアクリルアミド塗布量の違い
によりそれぞれ実施例１１〜１６とする。アニオン性ポ
リアクリルアミドの代わりに水を塗布したものを比較例
６とする。以上の結果を表４に記載する。Examples 11 to 16 and Comparative Example 6 Electrophotographic materials were prepared under the same conditions as in Example 3 except that cationic starch (Kate F, manufactured by Oji National) was used instead of the amphoteric starch used in Example 3. Transfer paper was obtained. These samples are referred to as Examples 11 to 16, respectively, depending on the difference in the amount of anionic polyacrylamide applied. Comparative Example 6 was prepared by applying water instead of anionic polyacrylamide. Table 4 shows the above results.
【００１８】以上の試料の操作側から幅方向５００ｍｍ
の部分について、離解性および前述の方法で測定した加
熱後あるいは吸湿後のカ−ルの状態およびボコツキの発
生率をそれぞれまとめて表１〜４に示す。離解性の評価
は、大型パルプ離解機を用いて１０５℃で３時間加熱乾
燥した１２０ｇの試料を、２リットルの水の中で完全に
離解するのに必要な時間（分）を測定することにより行
った。500 mm in the width direction from the operation side of the above sample
Tables 1 to 4 collectively show the disintegration, the state of the curl after heating or moisture absorption and the rate of occurrence of lumps measured by the method described above. The disintegration was evaluated by measuring the time (min) required to completely disintegrate 120 g of a sample heated and dried at 105 ° C. for 3 hours in 2 liters of water using a large pulp disintegrator. went.
【００１９】[0019]
【表１】 [Table 1]
【００２０】[0020]
【表２】 [Table 2]
【００２１】[0021]
【表３】 [Table 3]
【００２２】[0022]
【表４】 [Table 4]
【００２３】[0023]
【発明の効果】請求項１及び２の効果 表１から、平均分子量３×１０3〜１×１０5、特に６×
１０3〜２×１０4のアニオン性ポリアクリルアミドを塗
布することにより、離解性を損なうことなく加熱あるい
は吸湿後のカ−ル及びボコツキ現象の少ない電子写真用
転写紙の得られることが明かである。According to Table 1, the average molecular weight is from 3 × 10 3 to 1 × 10 5 , especially from 6 ×.
It is clear that by applying 10 3 to 2 × 10 4 anionic polyacrylamide, it is possible to obtain an electrophotographic transfer paper with less curl and squeak phenomenon after heating or moisture absorption without impairing the disintegration. .
【００２４】請求項１及び２の効果 表２から中性紙を用いることにより離解性も酸性紙より
若干向上し、加熱あるいは吸湿後のカ−ル及びボコツキ
の発生を著しく減少できることが明かである。Effects of Claims 1 and 2 It is clear from Table 2 that the use of neutral paper also improves the disintegration slightly compared to acidic paper, and can significantly reduce the occurrence of curls and bumps after heating or absorbing moisture. .
【００２５】請求項３及び４の効果 表３からアニオン性ポリアクリルアミドの塗布量を両面
合計で０．０２〜０．２０ｇ／ｍ2、特に０．０５〜
０．２０ｇ／ｍ2とすることにより離解性を損なうこと
なく加熱あるいは吸湿後のカ−ル及びボコツキの発生を
更に減少できることも明かである。Effects of Claims 3 and 4 From Table 3, it can be seen that the coating amount of the anionic polyacrylamide is 0.02 to 0.20 g / m 2 , particularly 0.05 to
It is also apparent that the use of 0.20 g / m 2 can further reduce the occurrence of curls and bumps after heating or absorbing moisture without impairing the disintegration.
【００２６】請求項５の効果 表４から、中性紙に両性澱粉を含有させることにより、
特にボコツキの発生を一層減少できることも明白であ
る。Effect of Claim 5 From Table 4, it can be seen that by adding amphoteric starch to neutral paper,
In particular, it is also apparent that the occurrence of bumps can be further reduced.
Claims (5)
×１０5のアニオン性ポリアクリルアミドを含有する層
が設けられていることを特徴とする電子写真用転写紙。An average molecular weight of 3 × 10 3 to 1 on a neutral paper surface.
An electrophotographic transfer paper comprising a layer containing x10 5 anionic polyacrylamide.
あることを特徴とする請求項１記載の電子写真用転写
紙。2. The electrophotographic transfer paper according to claim 1, wherein said average molecular weight is from 6 × 10 3 to 2 × 10 4 .
アミドの塗布量が０．０２ｇ／ｍ2〜０．２０ｇ／ｍ2で
あることを特徴とする請求項１または２記載の電子写真
用転写紙。3. A process according to claim 1 or 2, electrophotographic transfer paper, wherein the coating amount of the anionic polyacrylamide is 0.02g / m 2 ~0.20g / m 2 for both sides.
ｇ／ｍ2であることを特徴とする請求項３記載の電子写
真用転写紙。4. The coating amount is 0.05 g / m 2 to 0.20.
Electrophotographic transfer paper according to claim 3, characterized in that the g / m 2.
とを特徴とする請求項１、２、３または４記載の電子写
真用転写紙。5. The transfer paper for electrophotography according to claim 1, wherein an amphoteric starch is internally added to said neutral paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3190892A JP3005076B2 (en) | 1991-07-05 | 1991-07-05 | Transfer paper for electrophotography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3190892A JP3005076B2 (en) | 1991-07-05 | 1991-07-05 | Transfer paper for electrophotography |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0511487A JPH0511487A (en) | 1993-01-22 |
| JP3005076B2 true JP3005076B2 (en) | 2000-01-31 |
Family
ID=16265472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3190892A Expired - Fee Related JP3005076B2 (en) | 1991-07-05 | 1991-07-05 | Transfer paper for electrophotography |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3005076B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1916569B1 (en) * | 2005-08-17 | 2012-12-19 | Nippon Paper Industries Co., Ltd. | Electrophotographic transfer paper |
| JPWO2008102811A1 (en) * | 2007-02-21 | 2010-05-27 | 日本製紙株式会社 | Coated paper for offset printing |
-
1991
- 1991-07-05 JP JP3190892A patent/JP3005076B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0511487A (en) | 1993-01-22 |
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