JPH04110939A - Manufacture of base material of photographic sensitive paper - Google Patents
Manufacture of base material of photographic sensitive paperInfo
- Publication number
- JPH04110939A JPH04110939A JP23035090A JP23035090A JPH04110939A JP H04110939 A JPH04110939 A JP H04110939A JP 23035090 A JP23035090 A JP 23035090A JP 23035090 A JP23035090 A JP 23035090A JP H04110939 A JPH04110939 A JP H04110939A
- Authority
- JP
- Japan
- Prior art keywords
- support
- roll
- base paper
- photographic paper
- original paper
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 25
- 239000000839 emulsion Substances 0.000 claims description 15
- 238000003490 calendering Methods 0.000 claims description 12
- 238000011282 treatment Methods 0.000 claims description 11
- 229920005672 polyolefin resin Polymers 0.000 claims description 6
- 230000003746 surface roughness Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 abstract description 5
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- -1 Polyethylene Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920006319 cationized starch Polymers 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002755 poly(epichlorohydrin) Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】
（Ａ）産業上の利用分野
本発明は写真印画紙用支持体の製法に関するものである
。さらに詳しくは、乳剤光沢を良くし、かつ剛度を低下
することなく、かさの高い写真印画紙用支持体の製法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a method for producing a support for photographic paper. More specifically, the present invention relates to a method for producing a support for photographic paper that improves emulsion gloss and has high bulk without reducing stiffness.
（Ｂ）従来の技術
現在、写真印画紙用支持体は原紙の両面にポリオレフィ
ン樹脂を塗布した耐水性のある支持体が主流となってい
る。(B) Prior Art At present, the mainstream support for photographic paper is a water-resistant support made by coating both sides of a base paper with a polyolefin resin.
耐水性印画紙には、その表面形状により種々のものがあ
るが、この中で最も用いられているものは「光沢面」と
呼ばれる模様かなく極めて平滑な面をもつ印画紙である
。この「光沢面」は、現像処理をされた後の乳剤面の光
沢感か強く要求される。There are various types of water-resistant photographic paper depending on their surface shape, but the most commonly used photographic paper has a patternless, extremely smooth surface called a ``glossy surface.'' This "glossy surface" is strongly required to have a glossy appearance on the emulsion surface after the development process.
この光沢感は原紙面の微細な凹凸に支配される。This glossiness is controlled by the fine irregularities on the surface of the paper.
つまり、原紙面の微細な凹凸はこれをポリオレフィン樹
脂層で被覆しても写真印画紙用支持体の表面に残存し、
この凹凸が光沢感を低下させる。In other words, even if the fine irregularities on the surface of the base paper are coated with a polyolefin resin layer, they remain on the surface of the photographic paper support.
This unevenness reduces the glossiness.
上記の問題を解決するために、湿紙段階では特開昭６４
−２０５４１号の様に水分３０〜５０％の湿紙を緊度プ
レスして平滑性を上げる方法や特開昭６４−５９２２９
号の様に湿紙を加熱鏡面下ライヤーに密着乾燥させるこ
とにより平滑性を向上させる手段が開示されている。In order to solve the above problem, at the wet paper stage,
- A method of pressing wet paper with a moisture content of 30 to 50% to improve smoothness as in No. 20541, and JP-A No. 64-59229.
No. 3, discloses a means for improving the smoothness of wet paper by drying it in close contact with a heated mirror surface lower dryer.
またマシンカレンダー処理による方法や特公平１−４３
０７９号の様に熱カレンダーを使用する方法などがおこ
なわれている。Also, the method using machine calendar processing and the
A method using a thermal calendar, as in No. 079, has been used.
また、特開昭６４−５９２３０号には金属ロール−金属
ロールでカレンダー処理を行い、次いて金属ロール−弾
性ロール間カレンダー処理を行う事か開示されているか
、同公報における金属ロール−金属ロールはマシンカレ
ンダーであり、金属ロール−弾性ロールはスーパーカレ
ンダーであることが記載されている。即ち、同公報はマ
シンカレンダーとスーパーカレンダーによる平滑性の向
上を試みている。同公報には、ソフトカレンダー処理に
ついては、また金属ロールか、加熱金属ロールによって
なされることは開示されていない。Furthermore, JP-A No. 64-59230 discloses that calender treatment is performed between metal rolls and metal rolls, and then calender treatment is performed between metal rolls and elastic rolls. It is described that it is a machine calender and that the metal roll-elastic roll is a supercalender. That is, the publication attempts to improve smoothness by using a machine calender and a supercalender. The publication does not disclose that soft calendering is performed using metal rolls or heated metal rolls.
また、特開平２−２０３３３５号に金属ロール合成樹脂
ロール間でカレンダー処理を行うことが開示されている
か、合成樹脂ロールの加熱のみであり金属ロールの加熱
は開示されていない。Moreover, JP-A-2-203335 discloses that calendering is performed between a metal roll and a synthetic resin roll, or that only the heating of the synthetic resin roll is performed, but heating of the metal roll is not disclosed.
さて、マシンカレンダーや熱カレンダーは金属ロール間
に原紙を通し加圧処理をおこなうため、原紙面の大きな
うねりの凹凸の凸部は処理され、この凸部にある上記の
微細な凹凸はなくなる。しかし上記の大きなうねりの凹
凸の凹部は処理されないため、この凹部にある微細な凹
凸はなくならない。Now, in machine calenders and thermal calendars, the base paper is passed between metal rolls and subjected to pressure treatment, so the large undulations and convexities on the surface of the base paper are processed, and the above-mentioned fine convexes and convexities on these convexities disappear. However, since the concave portions of the large undulations described above are not treated, the minute concave and convex portions in these concave portions are not eliminated.
この結果、写真印画紙の乳剤光沢にムラが生し全体の光
沢感が上がらない。As a result, the emulsion gloss of the photographic paper becomes uneven and the overall glossiness does not improve.
この対策として、マシンカレンダーや熱カレンダーの線
圧や温度を上げて原紙面の大きなうねりの凹凸をつぶす
ことがおこなわれるが、この事により原紙のかさが減少
し、剛度の低下が生じる。As a countermeasure to this problem, the linear pressure and temperature of a machine calender or thermal calender are increased to flatten the large undulations on the surface of the base paper, but this reduces the bulk of the base paper and causes a decrease in stiffness.
また、別な対策として、加熱された弾性ロールと加熱さ
れない金属ロールとの組合わせにより大きなうねりの凹
凸の中の凹部にある微細な凹凸を除去しようと試みられ
ているが、このような組合せの弾性体では微細な凹凸を
除去する効果が小さく、加熱された弾性体が変形するこ
とによって効果を出すように線圧をあげるため原紙のか
さが減少し剛度の低下が生じる。また加熱された弾性ロ
ールは弾性体の熱伝導率が金属よりも小さいため、原紙
の平滑性を上げるに充分な熱供給がされず処理速度の加
減に伴う迅速な加熱条件の安定化が得られない。In addition, as another countermeasure, an attempt has been made to remove fine irregularities in the concave parts of large undulations by combining a heated elastic roll and an unheated metal roll, but such a combination does not work. An elastic body is less effective in removing minute irregularities, and the heated elastic body deforms to increase the linear pressure to produce the effect, which reduces the bulk of the base paper and lowers its rigidity. In addition, because the thermal conductivity of the elastic body of heated elastic rolls is lower than that of metal, sufficient heat is not supplied to improve the smoothness of the base paper, and heating conditions can be stabilized quickly as the processing speed is adjusted. do not have.
（Ｃ）発明が解決しようとする問題点
本発明は写真印画紙の光沢感をあげ、かつかさの高い剛
度の良好な写真印画紙用支持体を提供することを目的と
するものである。(C) Problems to be Solved by the Invention It is an object of the present invention to provide a support for photographic paper that increases the glossiness of photographic paper, has high bulk, and has good rigidity.
（Ｄ）問題を解決するための手段
本発明は、原紙の両面にポリオレフィン樹脂被覆層を設
けてなる写真印画紙用支持体に於て、上記原紙を、加熱
された金属ロールと弾性ロールからなるソフトカレンダ
ーで処理することを特徴とする写真印画紙用支持体の製
法である。(D) Means for Solving the Problem The present invention provides a support for photographic paper in which a polyolefin resin coating layer is provided on both sides of a base paper. This is a method for producing a support for photographic paper, which is characterized by processing with a soft calender.
加熱された金属ロールと弾性ロールからなるソフトカレ
ンダーではニップ時、原紙は弾性ロールと同じ堅さにな
るまで加圧されるが、それ以上の圧力では原紙はつぶさ
れる事なく弾性ロールか変形する。言い替えれば、ニッ
プ初期の加圧により原紙の大きなうねりの凹凸がある程
度小さくなりさらに、原紙の大きなうねりの凹凸がある
にもかかわらずニップ圧は均一にかかるため、それ以上
原紙の大きなうねりの凹凸をつぶす事なく原紙面の大き
な凹凸の中の凹部にある微細な凹凸を減少させることが
できる。In a soft calender consisting of a heated metal roll and an elastic roll, during the nip, the base paper is pressurized until it has the same hardness as the elastic roll, but if the pressure is greater than that, the base paper will not be crushed but will be deformed by the elastic roll. In other words, the pressure applied at the initial stage of the nip reduces the unevenness of the large undulations on the base paper to a certain extent, and the nip pressure is evenly applied despite the unevenness of the large undulations on the base paper, so it is not possible to further reduce the unevenness of the large undulations on the base paper. It is possible to reduce fine irregularities in the concave parts of the large irregularities on the surface of the original paper without crushing it.
すなわち、本発明は加熱された金属ロールと弾性ロール
とからなるソフトカレンダー処理をすることにより原紙
面の微細な凹凸が少なく、かつ、かさの高い、剛度の良
好な原紙、さらには乳剤光沢感の高い写真印画紙用支持
体を製造するものである。In other words, the present invention produces a base paper with less minute irregularities on the surface of the base paper, high bulk, and good stiffness by performing a soft calender treatment using a heated metal roll and an elastic roll, and furthermore, a base paper with good emulsion gloss. It produces a high quality support for photographic paper.
本発明者らは、上記の特性を有する原紙を製造するため
、条件を検討したところ、線圧８０〜２５０ｋｇ／ｃｍ
、好ましい範囲としては線圧１５０〜２５０ｋｇ／ｃｍ
、金属ロールの温度は８０℃以上、好ましくは１５０〜
２５０℃で処理することにより、目的の原紙を製造でき
ることが明かとなった。The present inventors investigated the conditions for producing base paper with the above characteristics and found that the linear pressure was 80 to 250 kg/cm.
, the preferred range is a linear pressure of 150 to 250 kg/cm
, the temperature of the metal roll is 80°C or higher, preferably 150°C or higher
It has become clear that the desired base paper can be produced by processing at 250°C.
また、本発明において弾性ロールの硬度はＪＩＳＺ２２
４６にしたがって測定されたシヨアＤ硬度で８０度以下
のものが好ましい。これ以上の硬度では、微細な凹凸を
減少させることができず原紙のかさを減少させ、剛度の
低下をまねく。In addition, in the present invention, the hardness of the elastic roll is JIS Z22.
It is preferable that the shore D hardness is 80 degrees or less as measured in accordance with No. 46. If the hardness is higher than this, fine irregularities cannot be reduced and the bulk of the base paper is reduced, leading to a decrease in stiffness.
つまり、本発明におけるソフトカレンダーは金属ロール
と弾性ロールよりなるニップ部に原紙が直角に入り、か
つスーパーカレンダーはどの設備を必要とせず、かつか
さを減少させず表面のみを処理するものである。In other words, in the soft calender of the present invention, the base paper enters the nip portion made of a metal roll and an elastic roll at right angles, and the super calender does not require any equipment and processes only the surface without reducing the bulk.
さらに、本発明では金属ロールの表面粗さは０゜３Ｓ以
下が好ましい。表面粗さが上記以上である場合は、その
ロールの凹凸のパターンが原紙面に転写されてしまい、
乳剤光沢の低下をひきおこす。Further, in the present invention, the surface roughness of the metal roll is preferably 0°3S or less. If the surface roughness is higher than the above, the uneven pattern of the roll will be transferred to the paper surface.
Causes a decrease in emulsion gloss.
さらに、本発明においてソフトカレンダー処理された原
紙はＪ ｌ５Ｐ８１１９にしたがって測定されたベック
平滑度が３００秒以上であることが好ましい。３００秒
以下では原紙面の微細な凹凸が充分に小さくなっておら
ず、目的とする乳剤光沢が得られない。Further, in the present invention, it is preferable that the soft calendered base paper has a Bekk smoothness of 300 seconds or more as measured in accordance with Jl5P8119. If it is shorter than 300 seconds, the fine irregularities on the surface of the base paper will not be sufficiently reduced, and the desired emulsion gloss will not be obtained.
本願発明におけるソフトカレンダー処理すべき位置は抄
紙機のサイズプレス前でも良いし、またサイズプレス後
アフタードライヤーを通過した後に設置されてもよい。In the present invention, the soft calendering process may be performed before the size press of the paper machine, or after passing through the afterdryer after the size press.
通常アフタードライヤー後にはマシンカレンダーが設置
され原紙が巻取られるが、該マシンカレンダーに替えて
行っても良いし、マシンカレンダーの前かつ／また後に
連結してもよい。Usually, a machine calender is installed after the after-dryer and the base paper is wound up, but it may be used instead of the machine calender, or it may be connected before and/or after the machine calender.
また、抄紙機で巻取られた原紙巻取りをオフマシンで処
理してもよい。更に樹脂被覆する工程において、ラミネ
ーター直前でソフトカレンダー処理されるともどりが少
なくより効果的である。Further, the roll of base paper wound by the paper machine may be processed off-machine. Furthermore, in the step of resin coating, if soft calendering is performed immediately before the laminator, it will be more effective with less curling.
本願発明におけるソフトカレンダーの金属ロールは乳剤
が塗布される側の原紙面に当てられる方法が好ましい。In the present invention, the metal roll of the soft calender is preferably applied to the side of the base paper on which the emulsion is applied.
しかし場合によってはその反対でも良い。なお本願発明
のソフトカレンダーを必要により複数段処理にしても良
い。However, in some cases, the opposite may be true. Note that the soft calendar of the present invention may be processed in multiple stages if necessary.
また、必要により加熱された金属ロールの他に、本発明
の特性を損なわない範囲で加熱された弾性ロールと組合
せても良い。Further, in addition to the heated metal roll, if necessary, a heated elastic roll may be used in combination without impairing the characteristics of the present invention.
また走行する原紙はニップ圧に対して直角に入ることが
好ましい。本願発明において、ソフトカレンダー処理さ
れる原紙の水分はほぼ紙として品質が安定しる最終水分
であり、１２％以下、好ましくは９％以下、更に好まし
くは８％以下である。Further, it is preferable that the running base paper enters at right angles to the nip pressure. In the present invention, the moisture content of the base paper subjected to soft calendering is approximately the final moisture content at which the quality of the paper is stable, and is 12% or less, preferably 9% or less, and more preferably 8% or less.
また、上記原紙の両面にポリオレフィン樹脂被覆層を設
けてなる写真印画紙用支持体の乳剤塗布面の中心面平均
粗さ（ＳＲａ）値が０，１４μ以下であることがこのま
しい。上記ＳＲａ値は写真印画紙支持体の表面の、光沢
に影響する微細な凹凸を表す指標であり、この値が０．
１４μを超えると乳剤塗布面の凹凸が大きいため、目的
とする乳剤光沢がえられないためである。なおこのＳＲ
ａ値は具体的には小板研究所製三次元表面粗さ計を使用
し、下記の条件で測定されたものである。Further, it is preferable that the center surface average roughness (SRa) value of the emulsion-coated surface of the support for photographic paper, which is formed by providing polyolefin resin coating layers on both sides of the base paper, is 0.14 μm or less. The above SRa value is an index representing fine irregularities on the surface of the photographic paper support that affect gloss, and this value is 0.
This is because if it exceeds 14μ, the emulsion coating surface will have large irregularities, making it impossible to obtain the desired emulsion gloss. Furthermore, this SR
Specifically, the a value was measured using a three-dimensional surface roughness meter manufactured by Koita Research Institute under the following conditions.
カットオフ ０． ８■
Ｘ測定長さ ２０．８ｍｍ
Ｙ送りピッチ ０．５ｍ
測定本数 １６１１Ｉ１１
（Ｅ）実施例
以下、実施例によって本発明をさらに詳しく説明するが
、本発明は実施例に限定されるものではない。なお、評
価方法は下記の通りである。Cutoff 0. 8■ X measurement length 20.8mm Y feed pitch 0.5m Measurement number 1611I11 (E) Examples The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited to the Examples. The evaluation method is as follows.
（１）剛度
ＪＩＳＰ８１２５に従って、樹脂被覆された写真印画紙
用支持体のテーパー剛度を測定した。この値が１７．５
以下では実用上問題がある。(1) Stiffness The taper stiffness of the resin-coated photographic paper support was measured in accordance with JISP8125. This value is 17.5
The following is a practical problem.
（２）平滑度
ＪＩＳＰ８１１９に従って原紙のベック平滑度を測定し
た。(2) Smoothness The Beck smoothness of the base paper was measured according to JISP8119.
（３）ＳＲａ値
小板研究所製三次元表面粗さ計を使用し、下記の条件で
測定されたものである。(3) SRa value Measured using a three-dimensional surface roughness meter manufactured by Koita Research Institute under the following conditions.
カットオフ ０． ８ｍｍ
Ｘ測定長さ ２０．８＝
Ｙ送りピッチ ０． ５ｍｍ
測定本数 １６ ｍｍ
（４）光沢値
村上色彩技術研究新製デジタル光沢計を使用し、黒焼き
現像処理された乳剤面を下記条件で測定されたものであ
る。入射角 ６０゜
受光絞り ２０゜
（５）Ｅズレ
カラー写真印画紙をハーフトーンで現像し、各発色層の
ズレを目視評価し、良いものをＡ１悪いものをＤとして
グレード付けをおこなった。Cutoff 0. 8mm X measurement length 20.8 = Y feed pitch 0. 5 mm Number of lines measured: 16 mm (4) Gloss value Using a new digital gloss meter manufactured by Murakami Color Technology Research Co., Ltd., the emulsion surface that had been subjected to black-print development was measured under the following conditions. Incident angle: 60° Light-receiving aperture: 20° (5) E-displacement Color photographic paper was developed in halftone, and the misalignment of each coloring layer was visually evaluated and graded as A for good and D for bad.
このうち、実用レベルにあるものは評価が８以上のもの
である。Among these, those that are at a practical level have an evaluation of 8 or higher.
実施例１〜１０及び比較例１〜６
ＬＢＫＰ５０重量部、ＬＢＳＰ５Ｃｌ重量部に配合した
パルプを濾水度３４０ｍ１に叩解し、これに下記の抄紙
薬品を加え、１７０ｇ／ｍの原紙を抄造した。この原紙
を硬度Ｈｓ８４度、粗さ０゜３ｓの加熱された金属ロー
ルとシヨアＤ硬度８０度のエラグラス製の弾性ロールよ
りなるソフトカレンダーで表１に示す条件で処理を行っ
た。Examples 1 to 10 and Comparative Examples 1 to 6 Pulp containing 50 parts by weight of LBKP and 5 parts by weight of LBSP was beaten to a freeness of 340 ml, and the following papermaking chemicals were added to make a base paper of 170 g/m. This base paper was processed under the conditions shown in Table 1 using a soft calender consisting of a heated metal roll with a hardness of 84 degrees Hs and a roughness of 0.3 seconds and an elastic roll made of Elaglass with a shore D hardness of 80 degrees.
なお、比較例１〜３は、マシンカレンダー処理、比較例
４〜６は表中記載の温度に加熱された２本の金属ロール
による熱カレンダー処理である。In addition, Comparative Examples 1 to 3 are machine calender treatments, and Comparative Examples 4 to 6 are thermal calender treatments using two metal rolls heated to the temperatures listed in the table.
カチオン化澱分 ３重量％ポリアクリ
ルアミド樹脂 ０．２重量％ポリエピクロルヒドリ
ン樹脂 ０．３重量％アルキルケテンダイマー樹脂 ０
．３重量％このソフトカレンダー処理を行った原紙にコ
ロナ放電処理を施した後、その表面には二酸化チタンを
１３重量％含むＭ１４．５密度０．９１８の低密度ポリ
エチレンを、裏面には顔料を含まないＭＩ６．７密度０
．９６６の高密度ポリエチレン５０重量部、ＭＩ３．５
密度０．９２６の低密度ポリエチレン５０重量部からな
るポリエチレンを３２０℃で３０μの厚さになるように
押し出しコーティングを施し、１５℃のクーリングロー
ルに４０ｋｇ／ｃｍの線圧で押し付け、写真印画紙用支
持体を得た。Cationized starch 3% by weight Polyacrylamide resin 0.2% by weight Polyepichlorohydrin resin 0.3% by weight Alkylketene dimer resin 0
．． 3% by weight This soft calendered base paper was subjected to a corona discharge treatment, and then the surface was coated with M14.5 low density polyethylene with a density of 0.918 containing 13% by weight of titanium dioxide, and the backside was coated with a pigment. No MI6.7 density 0
．． 966 high density polyethylene 50 parts by weight, MI3.5
Polyethylene consisting of 50 parts by weight of low-density polyethylene with a density of 0.926 was extruded at 320°C and coated to a thickness of 30μ, and pressed against a cooling roll at 15°C with a linear pressure of 40kg/cm to form a film for photographic paper. A support was obtained.
得られた支持体にカラー乳剤を１４μ塗布した写真印画
紙を作成し、その表面を光沢針で測定した結果を同じく
表１に示す。Photographic paper was prepared by coating the obtained support with 14 μm of color emulsion, and the surface was measured with a gloss needle. Table 1 also shows the results.
実施例１１〜１２及び比較例７
実施例１〜１０と同様のパルプ配合、薬品配合、坪量の
原紙を抄造し、表２に示す条件以外は実施例５の条件で
ソフトカレンダー処理を行った。Examples 11-12 and Comparative Example 7 Base paper with the same pulp composition, chemical composition, and basis weight as Examples 1-10 was made, and soft calendering was performed under the conditions of Example 5 except for the conditions shown in Table 2. .
このソフトカレンダー処理を行った原紙に実施例１〜１
０と同様の条件で写真印画紙を得た。Examples 1 to 1 were applied to the base paper subjected to this soft calender treatment.
Photographic paper was obtained under the same conditions as No. 0.
得られた、結果を表２に示す。The results obtained are shown in Table 2.
実施例１３及び比較例８〜９
実施例１〜１０と同様のパルプ配合、薬品配合、坪量の
原紙を抄造し、表３に示す条件以外は実施例５の条件で
ソフトカレンダー処理を行った。Example 13 and Comparative Examples 8 to 9 Base papers with the same pulp composition, chemical composition, and basis weight as Examples 1 to 10 were made, and soft calendering was performed under the conditions of Example 5 except for the conditions shown in Table 3. .
このソフトカレンダー処理を行った原紙に実施例１〜１
０と同様の条件で写真印画紙を得た。Examples 1 to 1 were applied to the base paper subjected to this soft calender treatment.
Photographic paper was obtained under the same conditions as No. 0.
得られた結果を表３に示す。The results obtained are shown in Table 3.
実施例１４〜１５および比較例１０〜１１実施例１〜１
０と同様のパルプ配合、薬品配合、坪量の原紙を抄造し
、表４に示す条件以外は実施例５の条件でソフトカレン
ダー処理を行った。Examples 14-15 and Comparative Examples 10-11 Examples 1-1
A base paper with the same pulp composition, chemical composition, and basis weight as in Example 0 was made, and soft calendering was performed under the conditions of Example 5 except for the conditions shown in Table 4.
このソフトカレンダー処理を行った原紙に実施例１〜１
０と同様の条件で写真印画紙を得た。Examples 1 to 1 were applied to the base paper subjected to this soft calender treatment.
Photographic paper was obtained under the same conditions as No. 0.
得られた結果を表４に示す。The results obtained are shown in Table 4.
（以下余白）
（Ｆ）発明の効果
実施例に見られる様にソフトカレンダー処理を行うこと
で原紙面の微細な凹凸が少なく、かつ、かさの高い、剛
度の良好な原紙、さらには乳剤光沢部の高い写真印画紙
用支持体が得られる。更に加熱された金属ロールと弾性
ロールで線圧１５０〜２５０ｋｇ／ｃｍでソフトカレン
ダー処理を行うとより好ましい原紙面の微細な凹凸が少
なく、かつ、かさの高い、剛度の良好な原紙、さらには
乳剤光沢部の高い写真印画紙用支持体が得られる。(Margins below) (F) Effects of the invention As seen in the examples, the soft calendering process results in a base paper with fewer minute irregularities on the base paper surface, high bulk, and good rigidity, as well as emulsion gloss areas. A support for photographic paper with high viscosity can be obtained. Furthermore, it is more preferable to perform a soft calender treatment using a heated metal roll and an elastic roll at a linear pressure of 150 to 250 kg/cm to obtain a base paper with fewer minute irregularities on the surface of the base paper, high bulk, and good stiffness, as well as an emulsion. A support for photographic paper with a high gloss area is obtained.
Claims (1)
真印画紙用支持体の製法において、前記原紙に、加熱さ
れた金属ロールと弾性ロールとからなるソフトカレンダ
ー処理を行うことを特徴とする写真印画紙用支持体の製
法。 ２、金属ロールと弾性ロールの線圧が１５０〜２５０ｋ
ｇ／ｃｍであることを特徴とする請求項１記載の写真印
画紙用支持体の製法。 ３、金属ロールの温度が１５０℃〜２５０℃であること
を特徴とする請求項１または２記載の写真印画紙用支持
体の製法。 ４、弾性ロールの硬度がショアＤ８０度以下であること
を特徴とする請求項１または２記載の写真印画紙用支持
体の製法。 ５、金属ロールの表面粗さが０．３ｓ以下であることを
特徴とする請求項１、２または３記載の写真印画紙用支
持体の製法。 ６、ソフトカレンダー処理後の原紙のベック平滑度が３
００秒以上であることを特徴とする請求項１、２、３、
４または５記載の写真印画紙用支持体の製法。 ７、原紙の両面にポリオレフィン樹脂層を形成した写真
印画紙支持体において乳剤塗布面側の中心面平均粗さ（
ＳＲａ）値が、０．１４μ以下であることを特徴とする
請求項１、２、３、４、５または６記載の写真印画紙用
支持体の製法。[Scope of Claims] 1. A method for producing a support for photographic paper, which comprises a base paper with polyolefin resin layers on both sides, in which the base paper is subjected to a soft calender treatment using a heated metal roll and an elastic roll. A method for producing a support for photographic paper, characterized by: 2. Linear pressure between metal roll and elastic roll is 150-250k
2. The method for producing a support for photographic paper according to claim 1, wherein the support is g/cm. 3. The method for producing a support for photographic paper according to claim 1 or 2, wherein the temperature of the metal roll is 150°C to 250°C. 4. The method for producing a support for photographic paper according to claim 1 or 2, wherein the elastic roll has a hardness of Shore D of 80 degrees or less. 5. The method for producing a support for photographic paper according to claim 1, 2 or 3, wherein the metal roll has a surface roughness of 0.3s or less. 6. Beck smoothness of base paper after soft calendering is 3
Claims 1, 2, 3, characterized in that the time is 00 seconds or more.
5. The method for producing a support for photographic paper according to 4 or 5. 7. Average roughness of the center surface on the emulsion-coated side of a photographic paper support with polyolefin resin layers formed on both sides of the base paper (
7. The method for producing a support for photographic paper according to claim 1, 2, 3, 4, 5 or 6, wherein the support has an SRa) value of 0.14μ or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2230350A JP2983594B2 (en) | 1990-08-31 | 1990-08-31 | Manufacturing method of photographic paper support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2230350A JP2983594B2 (en) | 1990-08-31 | 1990-08-31 | Manufacturing method of photographic paper support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04110939A true JPH04110939A (en) | 1992-04-13 |
| JP2983594B2 JP2983594B2 (en) | 1999-11-29 |
Family
ID=16906480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2230350A Expired - Fee Related JP2983594B2 (en) | 1990-08-31 | 1990-08-31 | Manufacturing method of photographic paper support |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2983594B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006103816A1 (en) * | 2005-03-29 | 2006-10-05 | Fujifilm Corporation | Support for image recording material, process for producing the same, and image recording material |
-
1990
- 1990-08-31 JP JP2230350A patent/JP2983594B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006103816A1 (en) * | 2005-03-29 | 2006-10-05 | Fujifilm Corporation | Support for image recording material, process for producing the same, and image recording material |
| JP2006276436A (en) * | 2005-03-29 | 2006-10-12 | Fuji Photo Film Co Ltd | Support for image recording material, method for manufacturing the same, and image recording material |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2983594B2 (en) | 1999-11-29 |
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