JPH0652391B2 - Support for photographic paper - Google Patents
Support for photographic paperInfo
- Publication number
- JPH0652391B2 JPH0652391B2 JP60116790A JP11679085A JPH0652391B2 JP H0652391 B2 JPH0652391 B2 JP H0652391B2 JP 60116790 A JP60116790 A JP 60116790A JP 11679085 A JP11679085 A JP 11679085A JP H0652391 B2 JPH0652391 B2 JP H0652391B2
- Authority
- JP
- Japan
- Prior art keywords
- support
- base paper
- paper
- fiber
- support according
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
- G03C1/775—Photosensitive materials characterised by the base or auxiliary layers the base being of paper
- G03C1/79—Macromolecular coatings or impregnations therefor, e.g. varnishes
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Paper (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は写真印画紙用支持体に関するものであり、更に
詳しく述べるならば、感光性乳剤を塗布すべき表面が平
滑であり、かつ寸法安定性の高い写真印画紙用支持体に
関するものである。The present invention relates to a support for photographic printing paper, and more specifically, it has a smooth surface on which a photosensitive emulsion is coated and is dimensionally stable. The present invention relates to a highly photographic photographic paper support.
従来、写真印画紙用支持体として、バライタ紙が使用さ
れている。しかし、バライタ紙からなる支持体から作ら
れた印画紙には、吸水性が高く、そのため現像時の水洗
および乾燥に長時間を要し、薬品消費量が大きく、また
剛度およびその他の機械的強度が不十分であり、更に薬
液浸透による汚れを生ずるなどの問題点があった。Conventionally, baryta paper has been used as a support for photographic printing paper. However, photographic printing paper made from a baryta paper support has high water absorption, which requires a long time for washing and drying during development, large chemical consumption, and high rigidity and other mechanical strength. However, there is a problem in that it is insufficient and stains are caused by permeation of the chemical solution.
上述の問題点を解消するために、天然パルプから抄紙さ
れた基紙の両面上にポリオレフィン、例えばポリエチレ
ンの薄い膜を被覆したものが、写真印画紙用支持体とし
て実用されている。In order to solve the above-mentioned problems, a base paper made from natural pulp and coated on both sides with a thin film of polyolefin such as polyethylene is practically used as a support for photographic printing paper.
しかしながら、従来のポリオレフィン被覆支持体には、
その表面の平滑度が不十分であって、このためその表面
に感光写真乳剤を塗布するとその塗布層の厚さに不均一
（むら）を生ずるという問題点がある。However, conventional polyolefin coated supports include
There is a problem that the smoothness of the surface is insufficient, and therefore, when a photosensitive photographic emulsion is coated on the surface, the thickness of the coating layer becomes uneven.
印画紙の写真乳剤塗布層を均一なものにするためには印
画紙支持体の写真乳剤塗布表面が十分平滑であることが
必要であり、そのために基紙自体の表面が平滑で、かつ
湿潤乾燥に対し、寸法安定性がすぐれていてしわを発生
しないことが大切である。In order to make the photographic emulsion coating layer of photographic paper uniform, it is necessary that the photographic emulsion coating surface of the photographic paper support is sufficiently smooth, and therefore the surface of the base paper itself is smooth and wet-dried. On the other hand, it is important that the dimensional stability is excellent and wrinkles do not occur.
本発明が解決しようとする問題点は、基紙層とその両面
上に積層されたポリオレフィンフィルム層とからなる写
真印画紙用支持体において、表面平滑性と、寸法安定性
のすぐれた基紙を有する支持体を提供し、それにより感
光写真乳剤を塗布すべき支持体表面を、十分に平滑でし
わのないものとすることにある。The problem to be solved by the present invention is to provide a base paper having excellent surface smoothness and dimensional stability in a support for photographic printing paper comprising a base paper layer and a polyolefin film layer laminated on both surfaces thereof. The present invention is to provide a support having a light-sensitive photographic emulsion coated therewith so that the support surface is sufficiently smooth and wrinkle-free.
本発明の写真印画紙用支持体は、天然パルプと疎水性繊
維との混合物から抄紙された基紙層と、この基紙層の両
面上に積層されたポリオレフィンフィルム層とを有し、
前記疎水性繊維が、ホルマール化、アセチル化、シアノ
エチル化、および／又はグラフト重合成処理された有機
繊維、およびガラス繊維から選ばれた少なくとも１種か
らなることを特徴とするものである。The photographic paper support of the present invention has a base paper layer made from a mixture of natural pulp and hydrophobic fibers, and a polyolefin film layer laminated on both sides of the base paper layer,
It is characterized in that the hydrophobic fiber comprises at least one selected from the group consisting of organic fiber which has been formalized, acetylated, cyanoethylated, and / or graft-polymerized, and glass fiber.
本発明において、表面平滑性と寸法安定性のすぐれた基
紙は天然パルプと上記特定疎水性繊維との混合物を抄紙
することによって得られる。本発明に用いられる疎水性
繊維は、有機繊維、例えばセルロース繊維例えば天然パ
ルプに、ホルマール化、アセチル化、シアノエチル化、
および／又はグラフト重合成処理などを施して得られる
疎水性化セルロース繊維などの疎水性有機繊維、および
ガラス繊維から選ぶことができる。本発明に好ましい疎
水性繊維は、上記処理により疎水性化された天然パルプ
繊維およびガラス繊維である。ホルマール化、アセチル
化、シアノエチル化には、通常のホルマール化剤（例え
ばホルムアルデヒド）、アセチル化剤（例えば無水酢
酸）、およびシアノエチル化剤（例えばアクリロニトリ
ル）を用いることができる。またグラフト重合成には、
アクリロニトリル、アクリル酸エステル、又はメタアク
リル酸エステルなどを用いることができる。In the present invention, the base paper having excellent surface smoothness and dimensional stability is obtained by making a mixture of natural pulp and the above-mentioned specific hydrophobic fiber. Hydrophobic fibers used in the present invention include organic fibers such as cellulose fibers such as natural pulp, formalized, acetylated, cyanoethylated,
And / or a hydrophobic organic fiber such as a hydrophobized cellulose fiber obtained by performing a graft polysynthesis treatment, or the like, and a glass fiber. The preferred hydrophobic fibers for the present invention are natural pulp fibers and glass fibers which have been rendered hydrophobic by the above treatment. For formalization, acetylation, and cyanoethylation, a conventional formalization agent (for example, formaldehyde), an acetylation agent (for example, acetic anhydride), and a cyanoethylation agent (for example, acrylonitrile) can be used. In addition, for graft heavy synthesis,
Acrylonitrile, acrylic acid ester, methacrylic acid ester, or the like can be used.
基紙における疎水性繊維の含有量は５〜60重量％である
ことが好ましく、10〜30重量％であることがより好まし
い。基紙中に含まれた疎水性繊維は天然パルプ繊維にく
らべて繊維間結合力が低く、このため抄紙間の湿紙全体
としての繊維間結合を減少させる。このため湿紙のドラ
イヤー乾燥間における繊維の相対的変位がスムーズに行
われ、しわや凹凸の形成が著しく減少する。また、得ら
れた乾燥原紙中の繊維に殆んど乾燥歪が残留していない
から、原紙、又は支持体、又は印画紙として貯蔵、或は
使用間に吸湿、湿潤、乾燥による寸法の変化が著しく少
なくなり、寸法安定性が極めて良好となる。The content of the hydrophobic fiber in the base paper is preferably 5 to 60% by weight, more preferably 10 to 30% by weight. The hydrophobic fibers contained in the base paper have a lower interfiber bond strength than the natural pulp fibers, and therefore reduce the interfiber bond between the papermaking as a whole. Therefore, the relative displacement of the fibers during the dryer drying of the wet paper is smoothly performed, and the formation of wrinkles and unevenness is significantly reduced. Further, since almost no drying strain remains in the fibers in the obtained dry base paper, the size change due to moisture absorption, wetness, and dryness during storage as the base paper, the support, or the photographic paper, or during use. Remarkably reduced, dimensional stability becomes extremely good.
疎水性繊維の太さや長さなどにも、それが抄紙可能な限
り格別の限定はないが一般に天然パルプ繊維の太さおよ
び長さに近いもの、すなわち0.01〜0.5mmの太さと、１
〜５mmの長さを有していることが好ましい。The thickness and length of the hydrophobic fiber are not particularly limited as far as the paper can be made, but generally, the thickness and length of the natural pulp fiber are close to each other, that is, 0.01 to 0.5 mm and 1
It preferably has a length of ~ 5 mm.
本発明の支持体において、上述のように天然パルプ／疎
水性繊維混合物から抄紙された基紙の両面上に、ポリオ
レフィンフィルムが積層結着されている。In the support of the present invention, a polyolefin film is laminated and bound on both sides of a base paper made from a natural pulp / hydrophobic fiber mixture as described above.
ポリオレフィンフィルムは、ポリエチレンフィルム、ポ
リプロピレンフィルムおよびポリブテンフィルムなどか
ら選ぶことができるが、ポリエチレンフィルムが一般に
広く用いられている。ポリオレフィンフィルム層は15〜
50μmの厚さを有することが好ましい。また、ポリオレ
フィンフィルム層の少なくとも１層は５〜15重量％の二
酸化チタンを含有しているが好ましい。一般にこの二酸
化チタン含有高白度・高不透明ポリオレフィンフィルム
層の表面に写真乳剤層が形成される。The polyolefin film can be selected from a polyethylene film, a polypropylene film, a polybutene film and the like, but the polyethylene film is generally widely used. The polyolefin film layer is 15 ~
It preferably has a thickness of 50 μm. Also, it is preferred that at least one of the polyolefin film layers contains 5 to 15% by weight of titanium dioxide. Generally, a photographic emulsion layer is formed on the surface of the titanium dioxide-containing high whiteness / high opacity polyolefin film layer.
本発明の支持体は天然パルプと、所定量の疎水性繊維と
の混合物を含む抄紙原料を抄紙乾燥して得られた基布の
表面に、ポリオレフィン樹脂をフィルム状に溶融押し出
してこれを積層貼着して製造される。The support of the present invention is obtained by melt-extruding a polyolefin resin into a film on the surface of a base fabric obtained by paper-making and drying a paper-making raw material containing a mixture of natural pulp and a predetermined amount of hydrophobic fibers, and laminating and pasting this. Manufactured by wearing.
このとき本発明によって得られた基紙は十分平滑でしわ
などの凹凸が極めて少なく、従って、その上に被覆され
たポリオレフィンフィルム層の表面もすぐれた平滑性を
有している。At this time, the base paper obtained by the present invention is sufficiently smooth and has very few irregularities such as wrinkles. Therefore, the surface of the polyolefin film layer coated thereon has excellent smoothness.
以下、本発明を実施例により更に説明する。 Hereinafter, the present invention will be further described with reference to examples.
実施例１〜４および比較例１ 実施例１においてDDR（ダブルディスクリファイナー）
より濾水度300mlまで叩解して得られた高白パルプ90重
量部に、濾水度300mlのアセチル化天然パルプ繊維10重
量部を混合し、この混合物に、常法により1.0重量部の
内添薬品（カチオン化デンプン）および1.0ppmの染料
（カヤフェクトブルー）を添加して、抄紙原料を調製し
た。この抄紙原料を用いて抄巾300mmの長網抄紙機によ
り抄造を実施した。得られた湿紙を脱水し、一部乾燥し
た後、これに８％の導電剤（塩化カルシウム）を含む処
理剤によりサイズプレス処理を施した。得られた乾燥原
紙にマシンカレンダーにより仕上を施し基紙を得た。こ
の基紙の坪量は175ｇ／ｍ2であり、その緊度は1.1であ
った。Examples 1 to 4 and Comparative Example 1 DDR (double disk refiner) in Example 1
90 parts by weight of high-white pulp obtained by beating to a freeness of 300 ml is mixed with 10 parts by weight of acetylated natural pulp fiber having a freeness of 300 ml, and 1.0 part by weight of internal mixture is added to this mixture by a conventional method. A papermaking raw material was prepared by adding a chemical (cationized starch) and 1.0 ppm of a dye (Kayafect blue). Using this papermaking raw material, papermaking was carried out with a Fourdrinier paper machine having a papermaking width of 300 mm. The obtained wet paper was dehydrated, partially dried, and then subjected to size press treatment with a treating agent containing 8% of a conductive agent (calcium chloride). The obtained dry base paper was finished by a machine calendar to obtain a base paper. The basis weight of this base paper was 175 g / m 2 and its tenacity was 1.1.
この基紙について、平滑度（官能評価）と寸法安定性の
テストを施した。平滑度については下記４段階に評価し
た。The base paper was tested for smoothness (sensory evaluation) and dimensional stability. The smoothness was evaluated according to the following 4 grades.
クラス１−ほとんどしわ状凹凸がない。Class 1-Almost no wrinkles.
クラス２−極く細かなしわ状凹凸が認められる。Class 2-Extremely fine wrinkled irregularities are observed.
クラス３−しわ状凹凸がかなり目立つ。Class 3-Wrinkled irregularities are noticeable.
クラス４−多数のしわ状凹凸が明瞭に認められる。ま
た、寸法安定性の評価は、供試原紙を20℃の水中に３０
分間浸漬し、その前後の寸法を測定、両者の差の浸漬前
原紙の寸法に対する比（％）によって表わした。Class 4-Many wrinkled irregularities are clearly visible. In addition, the dimensional stability was evaluated by applying the test base paper to water at 20 ° C for 30
After dipping for a minute, the dimensions before and after the dipping were measured and expressed by the ratio (%) of the difference between the two to the dimension of the pre-dipping base paper.
比較例１においては疎水性繊維を用いず、100重量部の
高白パルプのみを用いて、上記実施例１と同様の操作を
行った。In Comparative Example 1, the same operation as in Example 1 was carried out by using only 100 parts by weight of high white pulp without using the hydrophobic fiber.
実施例２〜４の各々において、実施例１と同様にして印
画紙用支持体を作製した。但し、実施例２においては、
アセチル化天然パルプ繊維の代りに、濾水度300mlのホ
ルマール化天然パルプ繊維を用いた。また実施例３にお
いては、アセチル化天然パルプ繊維の代りに、濾水度30
0mlのシアノエチル化天然パルプ繊維を用いた。さらに
実施例４においては、アセチル化天然パルプ繊維の代り
に、濾水度300mlのアクリロニトリルグラフト重合成処
理した天然パルプ繊維を用いた。In each of Examples 2 to 4, a support for printing paper was prepared in the same manner as in Example 1. However, in Example 2,
Instead of the acetylated natural pulp fiber, formalized natural pulp fiber having a freeness of 300 ml was used. In Example 3, the freeness of 30 was used instead of the acetylated natural pulp fiber.
0 ml of cyanoethylated natural pulp fiber was used. Further, in Example 4, natural pulp fibers having a freeness of 300 ml and subjected to acrylonitrile graft polysynthesis were used in place of the acetylated natural pulp fibers.
結果を表１表に示す。The results are shown in Table 1.
上記の各基紙の両面に常法により、ポリエチレン樹脂に
より厚さ30μmの被覆を施した。このとき、支持体の写
真乳剤を塗布される表面を形成するポリエチレンフィル
ム層には10％（重量）のアナターゼ型二酸化チタンを均
一に分散したポリエチレン樹脂を用いた。 Both sides of each of the above base papers were coated with a polyethylene resin in a thickness of 30 μm by a conventional method. At this time, a polyethylene resin in which 10% (by weight) of anatase type titanium dioxide was uniformly dispersed was used for the polyethylene film layer forming the surface of the support coated with the photographic emulsion.
得られた印画紙用支持体は、実施例１〜４においては極
めて良好な平滑性（クラス１）を有していた。しかし、
比較例１の支持体の表面の平滑性はクラス２であった。The photographic paper support thus obtained had extremely good smoothness (class 1) in Examples 1 to 4. But,
The smoothness of the surface of the support of Comparative Example 1 was Class 2.
実施例５ 実施例５において、実施例１と同様の操作を行った。但
し、抄紙原料として、DDRにより濾水度300mlまで叩解さ
れた高白パルプ85重量部に対し、ガラス繊維（太さ0.02
mm、長さ１mm）15重量部を混合して用いた。得られた基
紙の坪量は175ｇ／cm2、緊度は0.98であり、その平滑性
はクラス１、その寸法安定性（水中伸び）は0.8％であ
った。Example 5 In Example 5, the same operation as in Example 1 was performed. However, as a papermaking raw material, glass fiber (thickness 0.02
mm, length 1 mm) 15 parts by weight were mixed and used. The base paper thus obtained had a basis weight of 175 g / cm 2 , a tenacity of 0.98, a smoothness of class 1, and a dimensional stability (elongation in water) of 0.8%.
この基紙に実施例１と同様のポリオレフィン被覆を施し
て得られた印画紙用支持体も、良好な表面平滑性と寸法
安定性を有していた。The photographic paper support obtained by applying the same polyolefin coating as in Example 1 to this base paper also had good surface smoothness and dimensional stability.
本発明の写真印画紙用支持体は、表面平滑性と寸法安定
性の良好な基紙を用いているため、支持体の表面平滑性
および寸法安定性も極めて良好である。従って、この支
持体表面に写真乳剤を塗布した場合、極めて均一な感光
層を形成することができる。Since the support for photographic printing paper of the present invention uses a base paper having good surface smoothness and dimensional stability, the surface smoothness and dimensional stability of the support are also very good. Therefore, when a photographic emulsion is coated on the surface of this support, an extremely uniform photosensitive layer can be formed.
Claims (6)
抄紙された基紙層と、この基紙層の両面上に積層された
ポリオレフィンフィルム層とを有し、 前記疎水性繊維が、ホルマール化、アセチル化、シアノ
エチル化、および／又はグラフト重合成処理を施された
有機繊維、およびガラス繊維から選ばれた少なくとも１
種からなることを特徴とする写真印画紙用支持体。1. A base paper layer made from a mixture of natural pulp and hydrophobic fibers, and a polyolefin film layer laminated on both sides of the base paper layer, wherein the hydrophobic fibers are formal. At least one selected from the group consisting of organic fiber and acetylated, cyanoethylated, and / or graft-polymerized organic fiber, and glass fiber
A support for photographic printing paper, characterized by comprising a seed.
有率が５〜60重量％である、特許請求の範囲第１項記載
の支持体。2. The support according to claim 1, wherein the content of the hydrophobic fibers in the base paper layer is 5 to 60% by weight.
〜５mmの長さを有する、特許請求の範囲第１項記載の支
持体。3. The hydrophobic fiber has a thickness of 0.01 to 1 mm and 1
Support according to claim 1, having a length of -5 mm.
ｍの厚さを有している、特許請求の範囲第１項記載の支
持体。4. The polyolefin film layer has a thickness of 15 to 50 μm.
Support according to claim 1, having a thickness of m.
チレンフィルムおよびポリプロピレンフィルムから選ば
れた少なくとも１種のポリオレフィンから形成されてい
る、特許請求の範囲第１項記載の支持体。5. The support according to claim 1, wherein the polyolefin film layer is formed of at least one polyolefin selected from polyethylene film and polypropylene film.
も１層が５〜15重量％の二酸化チタンを含有している、
特許請求の範囲第１項記載の支持体。6. At least one of said polyolefin film layers contains from 5 to 15% by weight of titanium dioxide.
The support according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60116790A JPH0652391B2 (en) | 1985-05-31 | 1985-05-31 | Support for photographic paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60116790A JPH0652391B2 (en) | 1985-05-31 | 1985-05-31 | Support for photographic paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61275752A JPS61275752A (en) | 1986-12-05 |
| JPH0652391B2 true JPH0652391B2 (en) | 1994-07-06 |
Family
ID=14695756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60116790A Expired - Lifetime JPH0652391B2 (en) | 1985-05-31 | 1985-05-31 | Support for photographic paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0652391B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4924126A (en) * | 1972-06-26 | 1974-03-04 | ||
| JPS5653743B2 (en) * | 1974-05-04 | 1981-12-21 |
-
1985
- 1985-05-31 JP JP60116790A patent/JPH0652391B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61275752A (en) | 1986-12-05 |
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