JPH0694229B2 - Ink jet recording paper - Google Patents
Ink jet recording paperInfo
- Publication number
- JPH0694229B2 JPH0694229B2 JP60235388A JP23538885A JPH0694229B2 JP H0694229 B2 JPH0694229 B2 JP H0694229B2 JP 60235388 A JP60235388 A JP 60235388A JP 23538885 A JP23538885 A JP 23538885A JP H0694229 B2 JPH0694229 B2 JP H0694229B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- ink jet
- jet recording
- recording
- ink
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/06—Lithographic printing
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Duplication Or Marking (AREA)
Description
本発明は記録用のインク吸収性が速く，乾燥性に優れ，
記録時や保存時の吸湿及び脱湿による寸法変化が起り難
く，ドツト周辺がシヤープで解像度が高く，しかも塗被
面の平滑性及び光沢が高いキヤストコート紙より成るイ
ンクジエツト記録用紙に関するものである。INDUSTRIAL APPLICABILITY The present invention has fast absorption of recording ink, excellent drying property,
The present invention relates to an ink jet recording paper made of cast coated paper which is resistant to dimensional change due to moisture absorption and dehumidification during recording and storage, has sharp and high resolution around the dots, and has high smoothness and gloss on the coated surface.
インクジエツト記録方式は騒音が無く，現像や定着プロ
セスを必要とせず，高速記録が可能で，且つ容易に多色
記録を行ない得ることから、フアクシミリ，ワードプロ
セツサー，端末プリンターなどに近年急速に普及されつ
ゝある。とりわけ、カラーデイスプレイからカラーハー
ドコピーを作成するインクジエツト記録方式によるカラ
ープリンターの開発が進んでいる。インクジエツトカラ
ープリンターは７色の表現色（黄，マゼンタ，シアン，
赤，緑，紫，黒）を用いたカラーグラフイツクス分野を
始めとして、最近はグラビヤ印刷或いは銀塩写真に近い
高画質を得るフルカラーコピー、所謂ビクトリアルコピ
ーを作成する高解像度のカラープリンターが開発されて
いる。 インクジエツト記録には普通紙を利用出来る利点があ
る。しかしながら多色記録に適したインクジエツト記録
用紙としては、一般の普通紙では満足されていないのが
実情である。 インクジエツト記録用紙に要求される基本的性能は （１）ドツト形状が円形で、且つ滲みなどの拡がりが無
く，ドツト周辺がシヤープで解像度が高いこと、 （２）ドツトの色濃度が高く，鮮明であること、 （３）インクの吸収性が速く乾燥性に優れ、且つインク
の吸収量が多いこと、 （４）記録時や保存時の寸法安定性が高く、カール，波
打ち，シワなどの変形が無いこと、 などが挙げられる。 上記の条件を充たすインクジエツト記録用紙として、基
紙表面に塗被層を設け、顔料，接着剤などを最適化した
塗被紙タイプのものが検討されている。 特開昭55−51583号においては粒径0.1〜10μの非膠質シ
リカ粉末と高分子結着剤とを含む被覆層を設けたインク
ジエツト記録用紙が、また特開昭58−72495号において
は平均粒径0.05μ以下のシリカ顔料系を含み水溶性高分
子をバインダーとする片面塗布量が15g/m2以上の塗工層
を設けたインクジエツト記録用紙が提案されている。し
かしながら、之等の記録用紙はインク乾燥性を高めるた
めにシリカ系顔料の比率を多くすると塗被面の平滑性及
び光沢が低下するため、ドツト周辺が不鮮明となり高画
質のものが得られない。逆にシリカ系顔料の比率を少な
くするとインク乾燥性の低下と共に、インク濃度の低下
を来たし、更にインクドツトが紙の平面方向に拡がり解
像度が低下して了う。 また、多色高画質のインクジエツト記録用紙では基紙表
面の繊維を塗被層で完全に被覆させなければならないた
め、顔料及び接着剤を主成分とする塗被層の量は少なく
とも8g/m2以上好ましくは10g/m2以上必要である。 従来のインクジエツト記録用塗被紙は顔料及び接着剤を
主成分とするインクジエツト記録用塗被液をエヤーナイ
フコーター，ブレードコーター，ロールコーター，バー
コーター，サイズプレスなどで基紙に塗被し、次に、エ
ヤーキヤツプドライヤー，エヤーフロータードライヤー
などの熱風ドライヤーまたはシリンダードライヤーなど
で乾燥して製造している。The ink jet recording method has no noise, does not require development and fixing processes, can perform high-speed recording, and can easily perform multicolor recording, so it has rapidly spread to facsimiles, word processors, terminal printers, etc. in recent years. There is. In particular, the development of a color printer using an ink jet recording method for making a color hard copy from a color display is in progress. The ink jet color printer has 7 expression colors (yellow, magenta, cyan,
In addition to the field of color graphix using red, green, purple, and black), recently, high-resolution color printers that produce so-called victorial copies, which produce high-quality images similar to gravure printing or silver halide photography, have been developed. Being developed. Inkjet recording has the advantage that plain paper can be used. However, it is a fact that ordinary plain paper is not satisfactory as an ink jet recording paper suitable for multicolor recording. The basic performance required for ink jet recording paper is (1) the dot shape is circular, there is no spread such as bleeding, the area around the dot is sharp and the resolution is high, and (2) the color density of the dot is high and clear. (3) The ink absorbency is fast and the drying property is excellent, and the ink absorption amount is large. (4) The dimensional stability during recording and storage is high, and deformation such as curling, waviness, and wrinkles occurs. There is no such thing. As an ink jet recording paper satisfying the above conditions, a coated paper type in which a coating layer is provided on the surface of a base paper and a pigment, an adhesive and the like are optimized is being studied. In JP-A-55-51583, an ink jet recording paper provided with a coating layer containing a non-colloidal silica powder having a particle diameter of 0.1 to 10 μm and a polymer binder, and in JP-A-58-72495, an average particle diameter is used. There has been proposed an ink jet recording paper provided with a coating layer containing a silica pigment system having a diameter of 0.05 μm or less and a water-soluble polymer as a binder and having a coating amount of 15 g / m 2 or more on one side. However, if the ratio of the silica pigment is increased in order to improve the ink drying property of the above recording paper, the smoothness and gloss of the coated surface will be deteriorated, and the area around the dots will be unclear, and high quality images cannot be obtained. On the contrary, when the ratio of the silica pigment is decreased, the ink drying property is lowered and the ink density is lowered, and further, the ink dots spread in the plane direction of the paper and the resolution is lowered. Further, in the case of multi-color high-quality ink jet recording paper, the fibers on the surface of the base paper must be completely covered with the coating layer, so the amount of the coating layer containing pigments and adhesives as main components is at least 8 g / m 2 More preferably, 10 g / m 2 or more is required. The conventional ink jet recording coated paper is coated with an ink jet recording coating liquid containing pigments and adhesives as a main component on a base paper with an air knife coater, blade coater, roll coater, bar coater, size press, etc. In addition, it is manufactured by drying with a hot air dryer such as an air cap dryer or an air floater dryer or a cylinder dryer.
従来の塗被及び乾燥方法で製造したインクジエツト用塗
被紙は塗被面の平滑性，光沢が低く，ドツトのエツジの
不明瞭のものが主であつた。この事はインクの吸収速度
と吸収量とを高めるためにインクジエツト記録用塗被液
中に顔料成分として無定形シリカや微粉ケイ酸などを配
合することに起因している。また之等の欠点を改善する
ためにキヤレンダー，スーパーキヤレンダーなどで処理
を行なうと、塗被層の多孔構造が潰されてインクの吸収
速度と吸収量の低下を招いて了う。 更に従来の塗被及び乾燥方法でインクジエツト記録用塗
被紙を製造すると、基紙よりも浸水伸度が高くなり、多
色記録時にシワや波打ちなどの変形が生じ易く、寸法安
定性の点で満足なものが得られないのが実情である。即
ち、従来の方法では塗被工程で基紙が伸長し、乾燥工程
で急激に収縮するので、紙層内に不均一な歪が発生し、
之が寸法安定性不良の要因となつている。このため従来
の方法では多色高画質のインクジエツト記録用紙に使用
する基紙は浸水伸度の非常に小さいものを選択して用い
なければ寸法安定性の点で不満足のものになつて了う。 基紙の寸法安定性を改良するためには、パルプの叩解を
少なくすることが効果的だが、紙力及び表面性の低下を
伴なうため必ずしも好ましい方法とは言えない。また、
繊維の配向をランダムにする抄紙方法も考えられるが、
工業的，経済的には限度がある。 インクジエツト記録用紙の寸法安定性を改善するために
特開昭58−8685号にガラス繊維を使用する技術が開示さ
れているが、之だけでは特に多色インクジエツト記録の
様に幾色もの水溶性インクが重なり合う場合においては
充分にシワや波打ちを抑制することが出来ない。Inkjet coated papers produced by the conventional coating and drying methods have a low smoothness and gloss on the coated surface, and the dot edges are unclear. This is due to the incorporation of amorphous silica, finely divided silicic acid or the like as a pigment component in the ink jet recording coating liquid in order to increase the absorption speed and absorption amount of the ink. Further, when the treatment is carried out by a calender, a super calender or the like in order to improve these drawbacks, the porous structure of the coating layer is crushed and the ink absorbing speed and the absorbing amount are lowered. Furthermore, when a coated paper for ink jet recording is manufactured by a conventional coating and drying method, the water elongation is higher than that of the base paper, and deformation such as wrinkles and waviness is likely to occur during multicolor recording, and in terms of dimensional stability. The reality is that we cannot get something satisfactory. That is, in the conventional method, the base paper is stretched in the coating step and is rapidly contracted in the drying step, so that uneven strain occurs in the paper layer,
This is a cause of poor dimensional stability. For this reason, in the conventional method, the base paper used for the ink jet recording paper with high image quality of multicolor has to be unsatisfactory in terms of dimensional stability unless a base paper having a very small water-expansion elongation is selected and used. In order to improve the dimensional stability of the base paper, it is effective to reduce the beating of the pulp, but it is not necessarily a preferable method because the paper strength and the surface property are deteriorated. Also,
A papermaking method in which the fiber orientation is random is also possible,
There are limits industrially and economically. In order to improve the dimensional stability of ink jet recording paper, Japanese Patent Application Laid-Open No. 58-8685 discloses a technique using glass fiber. If the two overlap, wrinkles and waviness cannot be suppressed sufficiently.
本発明者等はこの様な点に鑑み、平滑性，光沢が高く，
ドツト周辺がシヤープで，インクの吸収性が速く乾燥性
に優れ，且つ寸法安定性の良好な多色高画質のインクジ
エツト記録用塗被紙について鋭意検討した。 その結果、基紙上に顔料と接着剤とを主成分とする塗被
液を塗被し、塗膜が湿潤状態にある間に加熱された鏡面
に圧着して乾燥させるキヤスト塗被紙の製造法を活用す
ることにより従来の問題点を解決するに至つた。 本発明で得たインクジエツト記録用キヤスト塗被紙は塗
膜を加熱した鏡面に圧着して乾燥しているため、従来の
方法で得たものに比べ、高い平滑性と光沢を有し、美観
に優れている。 多色高画質のインクジエツト記録紙はドツト周辺がシヤ
ープで鮮明なことが要求されるが、之等の性能を充たす
ためには平滑性の高い塗被紙が必要である。 即ち、平滑性の高い程、ドツトが均一に転移し、その後
均一に拡散，浸透するからである。本発明者等の検討結
果によると、ドツト周辺がシヤープで鮮明な記録は平滑
度が300秒以上の場合において得られた。 従来の方法で平滑度300秒以上のインクジエツト記録塗
被紙を得るためにはスーパーキヤレンダーなどの処理を
行なつて面を整える必要がある。しかし、この様な処理
を行なうと塗被紙の多孔構造が潰されてインキの吸収速
度が低下し乾燥性が遅くなつて了う。 之に対し本発明のインクジエツト記録用キヤスト塗被紙
はドライヤーの鏡面を写し取るため、インク吸収性を高
めるために塗被液の顔料成分100部中無定形シリカを100
部用いた場合においてもなお300秒以上の平滑度が得ら
れる。このため、インクジエツト記録用キヤスト塗被紙
はスーパーキヤレンダーなどの処理が必要で無いので、
塗被紙の多孔構造が潰れることによるインク乾燥性の低
下を招くことなく、滑らかな形状のドツトと表面の乱反
射が抑制された鮮明な画像を得ることが出来る。 通常のキヤスト塗被液にはカオリン，炭酸カルシウムを
主成分とした顔料組成が用いられる。本発明においても
同様な顔料組成を用いることが出来るが、インクの吸収
性を高めたり，ドツトの拡がりを抑制するためには顔料
として顔料成分100部のうち25部以上の無定形シリカを
配合することが必要である。 従来、無定形シリカは比表面積が大きいためインクの吸
収を高めたり，ドツトの拡がりを抑制する上で効果があ
るが、反面、平滑性や光沢が低下するという欠点があつ
た。しかしながら本発明においては顔料成分100部中無
定形シリカを100部用いても尚高レベルの平滑性と光沢
が得られる。一方、無定形シリカの配合率を減らすと平
滑性と光沢は更に高くなるが、インクの吸収性は相対的
に低下するので無定形シリカの配合は顔料成分100部中2
5部以上が必要である。 キヤストコーターを用いることにより無定形シリカの配
合を顔料成分100部中25部以上とすれば光沢度を30％以
上とすることができる。 本発明で使用する無定形シリカとは、固形分基準でSiO2
93％以上,Al2O3約１％以下,Na2O約５％以下の湿式法に
よる微粉シリカ，所謂ホワイトカーボンやシリカゲル，
乾式法による超微粉シリカなどである。 本発明に使用する塗被液には公知の種々の成分を用いる
ことが出来る。例えば、顔料としてはカオリン，炭酸カ
ルシウム，水酸化アルミニウム，サチンホワイト，ケイ
酸アルミニウム，無定形シリカ，コロイダルシリカな
ど；バインダーとしては、カゼイン，大豆蛋白，デンプ
ン，カルボキシメチルセルロース，ポリビニルアルコー
ル，スチレン・ブタジエン系ラテツクス，アクリル系ラ
テツクス，酢酸ビニル系エマルジヨンなどが単独または
混合して用いられる。更に一般の塗被液に用いられる分
散剤，流動変性剤，消泡剤，染料，滑剤，保水剤などの
各種の助剤を用いることが出来る。 次ぎにキヤスト塗被方法は塗膜を加熱した鏡面ドラムに
圧着して乾燥するため、従来の熱風ドライヤーの様に乾
燥する際に生じる乾燥収縮が起こらないばかりか、基紙
を抄紙した際に生じた乾燥歪が塗工工程で緩和され、そ
の侭の状態で鏡面ドラムに圧着されながら乾燥されるの
で浸水伸度は基紙より小さくなることを見い出した。 本発明者等が検討した結果では、キヤスト塗被方法でイ
ンクジエツト記録用紙を製造すると、横方向の浸水伸度
は基紙より20〜30％小さくなり、記録時の寸法安定性の
向上が見られた。之に対し、従来の方法である熱風ドラ
イヤーを用いてインクジエツト用記録紙を製造すると、
横方向の浸水伸度は基紙より20〜30％大きくなり、記録
時の寸法安定性が低下することを認めた。即ち同じ基紙
を用いてもキヤスト塗被方法で得たものと、従来の方法
で得たものとでは横方向の浸水伸度は40〜60％も差があ
り、インクジエツト記録時における寸法変化の違いが非
常に大きいことが認められた。 多色のインクジエツト記録用塗被紙では濃色の画像部は
多量のインクが付着することにより伸縮し、非画像部は
変化が無いため全体的にはシワや波打ちなどの変形が生
じ易い。この様な記録時の変形を実用上許容出来る範囲
に迄小さくするには、インクジエツト記録用塗被紙の横
方向の浸水伸度を少なくとも２％以下、好ましくは1.5
％以下にする必要がある。 しかしながら従来の塗被及び乾燥の方法で製造すると、
インクジエツト記録用塗被紙の横方向の浸水伸度は基紙
より20〜30％大きくなるため、インクジエツト記録用塗
被紙の横方向の浸水伸度２％以下好ましくは1.5％以下
の条件を満足させるためには、基紙の横方向の浸水伸度
が1.6％以下好ましくは1.2％以下のものが要求される。
だが、横方向の浸水伸度1.6％以下のものは限定され、
特に1.2％以下のものはヤンキードライヤーで乾燥され
た片艶紙以外には非常に少ないのが実情である。 之に対しキヤスト塗被方法で製造すると、インクジエツ
ト記録用塗被紙の横方向の浸水伸度は基紙より20〜30％
小さくなるため、インクジエツト記録用塗被紙の横方向
の浸水伸度２％以下、好ましくは1.5％以下を満たすた
めには、基紙の浸水伸度は2.7％以下、好ましくは２％
以下でよいので、通常の紙の多くが使用可能となる。 特に基紙としてヤンキーマシンで抄造された片艶紙を用
いると寸法安定化効果が極めて顕著に現われる。このと
きは片艶紙自体がヤンキードライヤーに密着された状態
で乾燥された紙で寸法安定性が高いことが一つの理由で
ある。但し、この様な片艶紙であつても通常の塗被及び
乾燥を行なうと寸法安定性は劣化して了う。In view of these points, the inventors of the present invention have high smoothness and gloss,
We have made a diligent study on a multi-color, high-quality ink-jet recording coated paper that has a sharp area around the dots, has fast ink absorption, excellent drying properties, and good dimensional stability. As a result, a method for producing a cast coated paper in which a coating liquid containing a pigment and an adhesive as main components is applied onto a base paper, and is pressed and dried onto a heated mirror surface while the coating film is in a wet state. We have solved the conventional problems by utilizing. The ink jet recording cast-coated paper obtained in the present invention has high smoothness and gloss compared with those obtained by the conventional method because the coating is pressed and dried on a heated mirror surface. Are better. A multi-color, high-quality ink jet recording paper is required to have sharp and sharp edges around the dots, but coated paper having high smoothness is required to satisfy the above performances. That is, the higher the smoothness, the more uniformly the dots are transferred, and then the more uniformly diffused and permeated. According to the results of studies by the present inventors, sharp recording around the dots and clear recording was obtained when the smoothness was 300 seconds or more. In order to obtain an ink jet recording coated paper with a smoothness of 300 seconds or more by the conventional method, it is necessary to treat the surface with a super calender or the like. However, when such a treatment is carried out, the porous structure of the coated paper is crushed, the absorption speed of the ink is lowered, and the drying property becomes slow. On the other hand, the ink-jet recording cast-coated paper of the present invention is to copy the mirror surface of the dryer, and therefore 100 parts of the amorphous silica in 100 parts of the pigment component of the coating liquid in order to enhance the ink absorbability.
Even when used in parts, a smoothness of 300 seconds or more can be obtained. For this reason, the cast coated paper for ink jet recording does not require processing such as super calender.
It is possible to obtain a dot having a smooth shape and a clear image in which irregular reflection on the surface is suppressed, without causing deterioration of the ink drying property due to the collapse of the porous structure of the coated paper. A pigment composition containing kaolin and calcium carbonate as the main components is used for the usual cast coating liquid. Although the same pigment composition can be used in the present invention, 25 parts or more of 100 parts of the pigment component is blended with amorphous silica as a pigment in order to enhance the ink absorption and suppress the spread of the dots. It is necessary. Conventionally, since amorphous silica has a large specific surface area, it is effective in increasing the absorption of ink and suppressing the spread of dots, but on the other hand, it has a drawback that the smoothness and gloss are lowered. However, in the present invention, even when 100 parts of amorphous silica is used in 100 parts of the pigment component, still high levels of smoothness and gloss can be obtained. On the other hand, if the blending ratio of amorphous silica is reduced, the smoothness and gloss are further increased, but the ink absorbency is relatively lowered.
5 or more copies are required. By using a cast coater, if the amount of the amorphous silica is 25 parts or more per 100 parts of the pigment component, the glossiness can be 30% or more. Amorphous silica used in the present invention means SiO 2 on a solids basis.
93% or more, Al 2 O 3 about 1% or less, Na 2 O about 5% or less, finely divided silica by a wet method, so-called white carbon or silica gel,
Examples include ultrafine silica powder obtained by a dry method. Various known components can be used in the coating liquid used in the present invention. For example, kaolin, calcium carbonate, aluminum hydroxide, satin white, aluminum silicate, amorphous silica, colloidal silica, etc. as pigments; casein, soy protein, starch, carboxymethyl cellulose, polyvinyl alcohol, styrene-butadiene based binders Latex, acrylic latex, vinyl acetate emulsion, etc. may be used alone or in combination. Further, various auxiliaries such as a dispersant, a flow modifier, an antifoaming agent, a dye, a lubricant and a water retention agent which are used in a general coating liquid can be used. Next, in the cast coating method, the coating film is pressed and dried on a heated mirror drum, so not only does the drying shrinkage that occurs when drying occurs like in conventional hot air dryers, but it also occurs when the base paper is made. It was found that the drying strain was alleviated in the coating process, and in the state of the wind, the water immersion elongation was smaller than that of the base paper because it was dried while being pressed against the mirror surface drum. According to the results of studies by the present inventors, when an ink jet recording paper is manufactured by the cast coating method, the water immersion elongation in the lateral direction is 20 to 30% smaller than that of the base paper, and the dimensional stability during recording is improved. It was On the other hand, when a recording paper for ink jet is manufactured using a hot air dryer which is a conventional method,
It was confirmed that the lateral water immersion elongation was 20 to 30% greater than that of the base paper, and the dimensional stability during recording was reduced. That is, even if the same base paper was used, there was a 40-60% difference in the water immersion elongation in the lateral direction between the one obtained by the cast coating method and the one obtained by the conventional method, and there was a dimensional change during ink jet recording. It was observed that the difference was very large. In a multi-color ink jet recording coated paper, the dark image portion expands and contracts due to the adhesion of a large amount of ink, and the non-image portion does not change, so that deformation such as wrinkles and waviness is likely to occur as a whole. In order to reduce such deformation during recording to a practically acceptable range, the water immersion elongation of the ink jet recording coated paper in the transverse direction is at least 2% or less, preferably 1.5% or less.
Must be less than or equal to%. However, when manufactured by conventional coating and drying methods,
Since the lateral water immersion elongation of the ink jet recording coated paper is 20 to 30% higher than that of the base paper, the lateral water immersion elongation of the ink jet recording coated paper satisfies 2% or less, preferably 1.5% or less. In order to achieve this, it is required that the transverse elongation of the base paper is 1.6% or less, preferably 1.2% or less.
However, the lateral inundation elongation of 1.6% or less is limited,
In particular, the amount of 1.2% or less is very small except for the glossy paper dried with a Yankee dryer. On the other hand, when manufactured by the cast coating method, the water immersion elongation of the ink jet recording coated paper in the lateral direction is 20 to 30% that of the base paper.
In order to reduce the water immersion elongation of the coated paper for ink jet recording in the transverse direction of 2% or less, preferably 1.5% or less, the water immersion elongation of the base paper is 2.7% or less, preferably 2% or less.
Most of the normal paper can be used because the following is sufficient. In particular, the dimensional stabilization effect is remarkably manifested when a single-glossy paper produced by a Yankee machine is used as the base paper. In this case, one reason is that the single-glossy paper itself is dried in a state of being in close contact with the Yankee dryer and has high dimensional stability. However, even with such a single-glossy paper, the dimensional stability is deteriorated when ordinary coating and drying are performed.
以下に実施例を挙げて本発明を更に具体的に説明する
が、本発明は之等の実施例によつて限定されるものでは
ない。また実施例中で部とあるは総べて重量部を示す。 実施例中の測定は次の様にして行なつた。 １）浸水伸度： J.TAPPI紙パルプ試験方法No.27のＡ法に準じて行なつ
た。但し、紙の横方向のみ測定し、浸漬時間は１時間と
した。 ２）多色記録時の変形： シヤープカラーイメージプリンターIO−700で黄，マゼ
ンタ，シアン，黒の４色をベタ印画し、その時の記録紙
にシワ，波打ち，凹凸などの変形を目視評価した。 ３）平滑度： JIS P8119に準じてベツク平滑度試験器で測定した。 ４）光沢度： JIS P8142に準じて75度鏡面光沢度を測定した。 ５）ドツトの形状： シヤープカラーイメージプリンターIO−700で印画した
黒ドツトの形状を実体顕微鏡で観察し、ドツト周辺が円
形でシヤープなものを○，不整いで滲みが大きなものを
×と評価した。 ６）インク乾燥性： シヤープカラーイメージプリンターIO−700でテストパ
ターンを記録する際、用紙押えローラーを印画部分にセ
ツトし、記録直後に早送りしてローラーによる汚れの度
合を目視評価した。 実施例１ 坪量65g/m2,横方向の浸水伸度2.4％の市販上質紙に顔料
としてカオリン（Engelhard M ＆ C社製，商品名,UW−9
0）50部，軽質炭酸カルシウム（奥多摩工業社製，商品
名，タマパール121）25部，無定形シリカ（日本シリカ
社製，商品名，ニツプシールLP）25部と，接着剤とし
て、スチレンブタジエン系ラテツクス（住友ノーガタツ
ク社製，商品名,SN307）８部，ガゼイン（ニユージーラ
ンド製，商品名，ラクチツクカゼイン）８部，離型剤と
してステアリン酸カルシウム（サンノプコ社製，商品
名，ノプコートC104）２部を主成分とする固形分濃度45
％の塗被液をロールコーターで固形分換算で17g/m2塗被
し，次ぎに塗膜を蟻酸亜鉛２％水溶液で凝固処理を行な
い、塗膜が湿潤状態にある間に100℃に加熱した鏡面ド
ラムに圧着して乾燥し，インクジエツト記録用キヤスト
塗被紙を得た。 結果は表に示すが、得られた記録紙は横方向の浸水伸度
が1.7％で，多色記録を行なつても実用上問題となる様
なシワ，波打ち，凹凸などの変形は起こらなかつた。ま
た得られた記録紙は平滑度が1000秒と高く、ドツトの形
状は円形で、ドツト周辺は滲みが無くシヤープであつ
た。更にインク吸収が速いためインク乾燥性が良いなど
優れたインクジエツト記録用紙特性を有していた。 比較例１ 実施例１と同じ上質紙及び塗被液を用い、ロールコータ
ーによつて固形分換算で17g/m2を塗被後、熱風ドライヤ
ーで乾燥してインクジエツト記録用塗被紙を得た。 結果は実施例１と対比して表に示すが、得られた記録紙
は浸水伸度が3.0％でインクジエツトプリンターで多色
記録を行なうとシワや凹凸などの変形が大きかつた。平
滑度が40秒と低く、ドツト周辺はシヤープでなかつた。
また平滑性，光沢が低いため美観が劣つていた。 比較例２ 比較例１のインクジエツト記録用塗被紙の平滑性、光沢
及びドツトの形状を改善するため、スーパーキヤレンダ
ー処理を行なつて比較例２のインクジエツト記録用塗被
紙を作製した。 得られた記録紙は平滑性，光沢が高められたため、ドツ
トの形状及び美観は向上したが、寸法安定性は改善され
ていないので多色記録を行なうとシワや凹凸などの変形
が大きかつた。またスーパーキヤレンダー処理によつて
塗被紙の多孔構造が潰されたためインキ吸収速度が低下
しインキ乾燥性の遅いものとなつて了つた。 実施例２ 坪量70g/m2,横方向の浸水伸度1.8％の塗被紙用原紙に実
施例１と同じ塗被液を用い、ロールコーターで固形分換
算で17g/m2を塗被後，塗膜を蟻酸亜鉛水溶液で凝固さ
せ，更に100℃に加熱した鏡面ドラムに圧着してインク
ジエツト記録用キヤスト塗被紙を得た。 結果を表に示すが、得られた記録紙は浸水伸度が1.3％
で、多色記録を行なつても寸法安定性が良く、シワや凹
凸などの変形は起こらなかつた。また実施例１と同様、
平滑性，光沢が高く，美観に優れ，ドツトの形状，イン
ク乾燥性が良いなど優れたインクジエツト記録紙用特性
を有していた。 比較例３ 実施例２と同じ塗被紙用原紙及び塗被液を用い、ロール
コーターで固形分換算で17g/m2を塗被後、熱風ドライヤ
ーで乾燥してインクジエツト記録用塗被紙を得た。 結果を表に示すが、得られた記録紙は浸水伸度が2.3％
で、多色記録を行なうとシワや凹凸などの変形が生じ
た。また比較例１と同様で、平滑性，光沢が低いため美
観及びドツト形状が劣つていた。 比較例４ 比較例３の記録紙をスーパーキヤレンダーを処理して比
較例４のインクジエツト記録用塗引紙を作製した。 結果を表に示すが、平滑性，光沢が向上しドツト形状も
良化されたが、インク乾燥性の低下を招いた。また多色
記録を行なうとシワや凹凸が発生した。 実施例３ 坪量72g/m2,横方向の浸水伸度1.1％の市販片艶紙を使用
した以外は実施例１と同様にしてインクジエツト記録用
キヤスト塗被紙を作成した。 結果を表に示すが、得られた記録紙は横方向の浸水伸度
が0.8％で、多色記録を行なつても寸法安定性が非常に
良好なためシワや凹凸などの変形は全く見られなかつ
た。また平滑性，光沢が高く，ドツト形状及及びインク
乾燥性が良好であつた。 比較例５ 基紙として実施例３と同じ市販片艶紙を使用した以外は
実施例１と同様にしてインクジエツト記録用塗被紙を作
成した。 結果を表に示すが、得られた記録紙は横方向の浸水伸度
が1.6％で多色記録時の寸法安定性は実施例３に比べる
と見劣りするが実用上は許容できる範囲であつた。しか
しながら、平滑性，光沢が低く、ドツト周辺がシヤープ
でないなど高画質用には難点があつた。 実施例４ 坪量70g/m2、横方向の浸水伸度1.8％の塗被紙用原紙
に，顔料として，カオリン（Engelhard M ＆ C社製，商
品名UW−90）50部，無定形シリカ（コフランケミカル社
製，商品名ゼオシール1000V）50部，接着剤として、ス
チレンブタジエン系ラテツクス（住友ノーガタツク社
製，商品名SN307）10部，ガゼイン（ニユージーランド
製，商品名ラクチツクカゼイン）10部，離型剤としてス
テアリン酸カルシウム（サンノプコ社製，商品名ノプコ
ートC104）２部を主成分とする固形分濃度40％の塗被液
をロールコーターで固形分換算で18g/m2塗被し，次ぎに
蟻酸亜鉛２％水溶液で凝固させた後,100℃に加熱した鏡
面ドラムに圧着して乾燥し，インクジエツト記録用キヤ
スト塗被紙を得た。 結果を表に示すが、得られた記録紙は横方向の浸水伸度
が1.4％で多色記録を行なつても寸法安定性が良く，シ
ワや凹凸などの変形は起こらなかつた。平滑度が800秒
と高く，ドツト形状は円形でドツト周辺はシヤープであ
つた。またインク吸収が速いためインク乾燥性が良いな
ど優れたインクジエツト記録用紙特性を有していた。 実施例５ 坪量70g/m2、横方向の浸水伸度1.8％の塗被紙用原紙
に，顔料として，カオリン（Engelhard M ＆ C社製，商
品名UW−90）25部，無定形シリカ（日本シリカ社製，商
品名ニツプシールLP）75部，接着剤としてスチレンブタ
ジエン系ラテツクス（住友ノーガタツク社製，商品名SN
307）12部，カゼイン（ニユージーランド製，商品名ラ
クチツクカゼイン）12部，離型剤としてステアリン酸カ
ルシウム（サンノプコ社製，商品名ノプコートC104）２
部を主成分とする固形分濃度36％の塗被液をロールコー
ターで固形分換算で20g/m2を塗被し，次ぎに蟻酸亜鉛２
％水溶液で塗膜を凝固させた後，直ちに100℃に加熱し
た鏡面ドラムに圧着して乾燥させて，インクジエツト記
録用キヤスト塗被紙を得た。 結果を表に示すが、得られた記録紙は横方向の浸水伸度
が1.4％で多色記録を行なつても寸法安定性が良く，シ
ワや凹凸などの変形は起こらなかつた。平滑性，光沢は
実施例2,4より低いが、ドツト形状は高画質用でも実用
上問題ないレベルであつた。インク乾燥性は実施例2,4
より更に良好であつた。 比較例６ 実施例５と同じ塗被用原紙及び塗被液を用い、ロールコ
ーターで固形分換算で12g/m2塗被後，塗膜を蟻酸亜鉛２
％水溶液で凝固させ，直ちに鏡面ドラムに圧着し乾燥さ
せてインクジエツト記録用キヤスト塗被紙を得た。 結果を表に示すが、得られた記録紙は多色記録時の寸法
安定性及びインキ乾燥性は実用上問題ないレベルであつ
たが、平滑度が200秒でドツト周辺は若干不整いとなり
高画質用には難点があつた。 Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. In the examples, "parts" means "parts by weight". The measurements in the examples were carried out as follows. 1) Water immersion elongation: It was performed according to the method A of J.TAPPI paper pulp test method No.27. However, the measurement was performed only in the lateral direction of the paper, and the immersion time was 1 hour. 2) Deformation during multicolor recording: The four colors of yellow, magenta, cyan, and black were solidly printed with the Sharp Color Image Printer IO-700, and the recording paper at that time was visually evaluated for deformation such as wrinkles, waviness, and unevenness. 3) Smoothness: Measured with a Bek smoothness tester according to JIS P8119. 4) Gloss: 75 degree specular gloss was measured according to JIS P8142. 5) Dot shape: The shape of a black dot printed by the Sharp Color Image Printer IO-700 was observed with a stereoscopic microscope, and the circular shape around the dot was evaluated as ◯, and the irregular shape with large bleed was evaluated as ×. . 6) Ink dryness: When recording a test pattern with the Sharp Color Image Printer IO-700, the paper pressing roller was set on the printing portion, and immediately after recording, it was fast forwarded to visually evaluate the degree of stain by the roller. Example 1 Kaolin (trade name, UW-9, manufactured by Engelhard M & C Co., Ltd.) was used as a pigment on a commercially available high-quality paper having a basis weight of 65 g / m 2 and a water immersion elongation of 2.4% in the transverse direction.
0) 50 parts, light calcium carbonate (Okutama Kogyo Co., Ltd., trade name, Tamapearl 121) 25 parts, amorphous silica (Nihon Silica Co., Ltd., trade name, NIPSEAL LP) 25 parts, and styrene-butadiene type latex as an adhesive. (Sumitomo Nogataku, Ltd., trade name, SN307) 8 parts, Gasein (New Zealand, trade name, Lactic Casein) 8 parts, and 2 parts of calcium stearate (San Nopco Co., trade name, Nopcoat C104) as a release agent Concentration of solid content of main component 45
% Coating liquid with a roll coater at a solid content of 17 g / m 2 and then the coating film is coagulated with a 2% zinc formate aqueous solution and heated to 100 ° C. while the coating film is in a wet state. It was pressed against the mirror surface drum and dried to obtain a cast coated paper for ink jet recording. The results are shown in the table. The obtained recording paper has a water immersion elongation of 1.7% in the transverse direction, and wrinkles, waviness, and unevenness that do not pose a practical problem even when performing multicolor recording do not occur. It was The obtained recording paper had a high smoothness of 1000 seconds, the dot shape was circular, and the area around the dot was bleeding-free and sharp. Further, it has excellent ink jet recording paper characteristics such as good ink drying property due to fast ink absorption. Comparative Example 1 Using the same high-quality paper and coating liquid as in Example 1, 17 g / m 2 in terms of solid content was coated with a roll coater and dried with a hot air dryer to obtain a coated paper for ink jet recording. . The results are shown in the table in comparison with Example 1. The obtained recording paper had a water immersion elongation of 3.0%, and when multicolor recording was performed with an ink jet printer, deformation such as wrinkles and irregularities was large. The smoothness was as low as 40 seconds, and the area around the dot was not sharp.
In addition, the smoothness and gloss were low, resulting in poor aesthetics. Comparative Example 2 In order to improve the smoothness, gloss and dot shape of the ink jet recording coated paper of Comparative Example 1, a super calender treatment was carried out to prepare an ink jet recording coated paper of Comparative Example 2. Since the obtained recording paper has improved smoothness and gloss, the shape and aesthetics of the dots are improved, but the dimensional stability is not improved. Therefore, when multicolor recording is performed, deformation such as wrinkles and unevenness is large. . Further, the super-calendering treatment crushed the porous structure of the coated paper, which reduced the ink absorption rate and resulted in a slow ink drying property. Example 2 The same coating solution as in Example 1 was used as a base paper for coated paper having a basis weight of 70 g / m 2 and a lateral water immersion elongation of 1.8%, and was coated with a roll coater at a solid content of 17 g / m 2. After that, the coating film was coagulated with an aqueous solution of zinc formate and further pressure-bonded to a mirror surface drum heated to 100 ° C. to obtain a cast coated paper for ink jet recording. The results are shown in the table. The recording paper obtained has a water immersion elongation of 1.3%.
As a result, dimensional stability was good even when multicolor recording was performed, and deformation such as wrinkles and unevenness did not occur. Also, as in Example 1,
It had excellent characteristics for ink jet recording paper such as high smoothness and gloss, excellent aesthetics, dot shape, and good ink drying property. Comparative Example 3 Using the same coated paper base paper and coating liquid as in Example 2, 17 g / m 2 in terms of solid content was applied by a roll coater and dried by a hot air dryer to obtain an ink jet recording coated paper. It was The results are shown in the table. The recording paper obtained has a water immersion elongation of 2.3%.
However, when multicolor recording was performed, deformation such as wrinkles and unevenness occurred. Also, as in Comparative Example 1, the smoothness and gloss were low, and thus the aesthetics and the dot shape were inferior. Comparative Example 4 The recording paper of Comparative Example 3 was treated with a super calender to prepare an ink jet recording coated paper of Comparative Example 4. The results are shown in the table. Although the smoothness and gloss were improved and the dot shape was improved, the ink drying property was deteriorated. Moreover, wrinkles and irregularities were generated when multicolor recording was performed. Example 3 A cast coated paper for ink jet recording was prepared in the same manner as in Example 1 except that a commercially available flat glossy paper having a basis weight of 72 g / m 2 and a lateral water immersion elongation of 1.1% was used. The results are shown in the table.The obtained recording paper has a water immersion elongation of 0.8% in the transverse direction, and dimensional stability is very good even when performing multicolor recording, so no deformation such as wrinkles or unevenness is observed. I couldn't do it. In addition, the smoothness and gloss were high, the dot shape and the ink drying property were good. Comparative Example 5 A coated paper for ink jet recording was prepared in the same manner as in Example 1 except that the same commercially available flat gloss paper as in Example 3 was used as the base paper. The results are shown in the table. The obtained recording paper had a water immersion elongation of 1.6% in the lateral direction and was inferior to Example 3 in dimensional stability during multicolor recording, but was in a practically acceptable range. . However, the smoothness and gloss were low, and there was a problem for high image quality because the area around the dots was not sharp. Example 4 50 parts of kaolin (manufactured by Engelhard M & C, trade name UW-90) as a pigment in a base paper for coated paper having a basis weight of 70 g / m 2 and a water immersion elongation of 1.8% in the transverse direction, amorphous silica (Cofran Chemical Co., Ltd., trade name Zeocile 1000V) 50 parts, as adhesive, styrene-butadiene-based latex (Sumitomo Nogataku Co., trade name SN307) 10 parts, Gazein (New Zealand, trade name Lactic Casein) 10 parts, A coating solution containing 2 parts of calcium stearate (manufactured by San Nopco Ltd., trade name Nopcoat C104) as a mold release agent and having a solid content of 40% was applied on a roll coater at a solid content of 18 g / m 2 and then applied. After coagulating with a 2% zinc formate aqueous solution, it was pressed onto a mirror drum heated to 100 ° C. and dried to obtain a cast coated paper for ink jet recording. The results are shown in the table. The obtained recording paper had a water immersion elongation of 1.4% in the lateral direction and had good dimensional stability even when multicolor recording was performed, and no deformation such as wrinkles or unevenness occurred. The smoothness was high at 800 seconds, the dot shape was circular, and the area around the dot was sharp. In addition, it has excellent ink jet recording paper characteristics such as good ink drying property due to fast ink absorption. Example 5 On a base paper for coated paper having a basis weight of 70 g / m 2 and a water immersion elongation of 1.8% in the transverse direction, 25 parts of kaolin (manufactured by Engelhard M & C, trade name UW-90) as a pigment, amorphous silica 75 parts (product name: NIPSEAL LP manufactured by Nihon Silica Co., Ltd.), styrene-butadiene type latex as an adhesive (product name: SN manufactured by Sumitomo Nogataku Co., Ltd.)
307) 12 parts, casein (New Zealand, trade name Lactic Casein) 12 parts, calcium stearate as a release agent (San Nopco, trade name Nopcoat C104) 2
Part of the coating liquid with a solid content of 36% as a main component is coated with a roll coater at a solid content of 20 g / m 2 and then zinc formate 2
%, The coating film was solidified with an aqueous solution of 100% and then immediately pressed and dried on a mirror surface drum heated to 100 ° C. to obtain a cast coated paper for ink jet recording. The results are shown in the table. The obtained recording paper had a water immersion elongation of 1.4% in the lateral direction and had good dimensional stability even when multicolor recording was performed, and no deformation such as wrinkles or unevenness occurred. Although the smoothness and gloss were lower than those of Examples 2 and 4, the dot shape was at a level that was practically no problem even for high image quality. The ink drying properties are shown in Examples 2 and 4.
It was even better. Comparative Example 6 Using the same coating base paper and coating liquid as in Example 5, after coating with a roll coater at a solid content of 12 g / m 2 , the coating film was zinc formate 2
% Aqueous solution, immediately pressed onto a mirror surface drum and dried to obtain a cast coated paper for ink jet recording. The results are shown in the table.The obtained recording paper had a level of dimensional stability and ink drying properties during multicolor recording that were practically unproblematic, but the smoothness was 200 seconds and the irregularity around the dots was slightly uneven. There were some difficulties for image quality.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−107879（ＪＰ，Ａ) 紙業タイムス社出版部編「ペーパーセー ルスエンジニアリング・シリーズ▲○１▼ 印刷用紙」紙業タイムス社発行（昭和54年 11月10日）Ｐ．114〜117 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-57-107879 (JP, A) “Paper Sales Engineering Series ▲ ○ 1 ▼ Printing Paper” published by Paper Industries Times, Inc. November 10, 1979) P. 114 ~ 117
Claims (2)
以上含む塗被層が基紙上に設けられており、その平滑度
が300秒以上であり、光沢度30％以上、また横方向の浸
水伸度が2.0％以下であるキヤストコート紙より成るイ
ンクジエツト記録用紙。1. A coating layer containing 25 parts or more of amorphous silica in 100 parts of a pigment component is provided on a base paper, the smoothness thereof is 300 seconds or more, the glossiness is 30% or more, and the lateral direction. Inkjet recording paper consisting of cast coated paper with a water immersion elongation of 2.0% or less.
である特許請求の範囲第１項記載のインクジエツト記録
用紙。2. The ink jet recording paper according to claim 1, wherein the base paper is a glossy paper made by a Yankee machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60235388A JPH0694229B2 (en) | 1985-10-23 | 1985-10-23 | Ink jet recording paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60235388A JPH0694229B2 (en) | 1985-10-23 | 1985-10-23 | Ink jet recording paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6295285A JPS6295285A (en) | 1987-05-01 |
| JPH0694229B2 true JPH0694229B2 (en) | 1994-11-24 |
Family
ID=16985340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60235388A Expired - Lifetime JPH0694229B2 (en) | 1985-10-23 | 1985-10-23 | Ink jet recording paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0694229B2 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0796331B2 (en) * | 1986-01-06 | 1995-10-18 | 三菱製紙株式会社 | Method for manufacturing inkjet recording medium |
| JP2739160B2 (en) * | 1988-05-20 | 1998-04-08 | 王子製紙株式会社 | Transfer paper for electrophotography |
| JP3059179B2 (en) * | 1989-01-23 | 2000-07-04 | 王子製紙株式会社 | Ink jet recording sheet |
| JPH072431B2 (en) * | 1989-12-28 | 1995-01-18 | 新王子製紙株式会社 | Inkjet recording sheet |
| JPH0657686A (en) * | 1992-07-31 | 1994-03-01 | New Oji Paper Co Ltd | Base paper for coated paper for web offset printing |
| US5567513A (en) * | 1993-07-13 | 1996-10-22 | Canon Kabushiki Kaisha | Ink-jet recording paper, and ink-jet recording method |
| JP2996876B2 (en) * | 1994-07-15 | 2000-01-11 | 日本製紙株式会社 | Cast coated paper for inkjet recording |
| JPH0825800A (en) * | 1994-07-20 | 1996-01-30 | Canon Inc | Ink jet recording method |
| JPH08104054A (en) * | 1994-10-04 | 1996-04-23 | Canon Inc | Ink jet recording method |
| JP3133238B2 (en) | 1995-10-26 | 2001-02-05 | 日本製紙株式会社 | Cast coated paper for inkjet recording and method for producing the same |
| US6051106A (en) * | 1996-03-22 | 2000-04-18 | Nippon Paper Industries Co., Ltd. | Cast-coated paper and production method thereof |
| JP2996916B2 (en) * | 1996-05-10 | 2000-01-11 | 日本製紙株式会社 | Cast coat adhesive sheet for inkjet recording |
| JPH09300813A (en) * | 1996-05-10 | 1997-11-25 | Nippon Paper Ind Co Ltd | Ink jet recording sheet |
| JP3661274B2 (en) * | 1996-05-27 | 2005-06-15 | 王子製紙株式会社 | Inkjet recording medium |
| US6632488B2 (en) | 1998-02-26 | 2003-10-14 | Oji Paper Co., Ltd | Ink jet recording material |
| AU2003220829A1 (en) | 2002-03-28 | 2003-10-13 | Ltd. Nippon Paper Industries Co. | Ink jet recording medium |
| ATE354475T1 (en) | 2003-03-31 | 2007-03-15 | Jujo Paper Co Ltd | INKJET RECORDING MEDIUM |
| EP1714792A1 (en) | 2005-03-28 | 2006-10-25 | Konica Minolta Holdings, Inc. | Inkjet recording medium and method for producing the same |
| WO2021183738A1 (en) * | 2020-03-12 | 2021-09-16 | Cryovac, Llc | Dryer management system and method of drying a material deposited on a web |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS529074A (en) * | 1975-07-10 | 1977-01-24 | Sekisui Chemical Co Ltd | Material for recording |
| JPS55146786A (en) * | 1979-05-02 | 1980-11-15 | Fuji Photo Film Co Ltd | Ink-jet recording sheet |
| JPS56148583A (en) * | 1980-04-21 | 1981-11-18 | Canon Inc | Recording material |
| JPS57107880A (en) * | 1980-12-25 | 1982-07-05 | Mitsubishi Paper Mills Ltd | Recording sheet for second original drawing |
| JPS57107879A (en) * | 1980-12-25 | 1982-07-05 | Mitsubishi Paper Mills Ltd | Preparation of recording paper |
| JPS5872495A (en) * | 1981-10-27 | 1983-04-30 | Jujo Paper Co Ltd | Ink jet recording paper |
| JPS5935979A (en) * | 1982-08-23 | 1984-02-27 | Canon Inc | Material to be recorded |
| JPS5995186A (en) * | 1982-11-22 | 1984-06-01 | Matsushita Electric Ind Co Ltd | Ink jet recording paper |
| JPS59146889A (en) * | 1983-02-10 | 1984-08-22 | Mitsubishi Paper Mills Ltd | Ink jet recording paper |
| JPS6285980A (en) * | 1985-10-11 | 1987-04-20 | Oji Paper Co Ltd | Ink jet recording sheet |
-
1985
- 1985-10-23 JP JP60235388A patent/JPH0694229B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 紙業タイムス社出版部編「ペーパーセールスエンジニアリング・シリーズ▲○１▼印刷用紙」紙業タイムス社発行（昭和５４年１１月１０日）Ｐ．１１４〜１１７ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6295285A (en) | 1987-05-01 |
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