JPS6135543B2 - - Google Patents
Info
- Publication number
- JPS6135543B2 JPS6135543B2 JP8497577A JP8497577A JPS6135543B2 JP S6135543 B2 JPS6135543 B2 JP S6135543B2 JP 8497577 A JP8497577 A JP 8497577A JP 8497577 A JP8497577 A JP 8497577A JP S6135543 B2 JPS6135543 B2 JP S6135543B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- photosensitive
- diazo
- weight
- photosensitive 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.)
- Expired
Links
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 238000007788 roughening Methods 0.000 claims description 5
- 239000000080 wetting agent Substances 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 31
- 239000007788 liquid Substances 0.000 description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 16
- 239000001993 wax Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 8
- 239000000377 silicon dioxide Substances 0.000 description 8
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 239000000839 emulsion Substances 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 6
- -1 polyethylene Polymers 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 239000012748 slip agent Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 150000008049 diazo compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920002689 polyvinyl acetate Polymers 0.000 description 3
- 239000011118 polyvinyl acetate Substances 0.000 description 3
- 239000011592 zinc chloride Substances 0.000 description 3
- 235000005074 zinc chloride Nutrition 0.000 description 3
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000001397 quillaja saponaria molina bark Substances 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229930182490 saponin Natural products 0.000 description 2
- 150000007949 saponins Chemical class 0.000 description 2
- JFXDYPLHFRYDJD-UHFFFAOYSA-M sodium;6,7-dihydroxynaphthalene-2-sulfonate Chemical compound [Na+].C1=C(S([O-])(=O)=O)C=C2C=C(O)C(O)=CC2=C1 JFXDYPLHFRYDJD-UHFFFAOYSA-M 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011975 tartaric acid Substances 0.000 description 2
- 235000002906 tartaric acid Nutrition 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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
- G03C1/52—Compositions containing diazo compounds as photosensitive substances
- G03C1/60—Compositions containing diazo compounds as photosensitive substances with macromolecular additives
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Description
本発明は複写操作時における原稿との自動分離
が良好なジアゾ感光紙に関する。
一般に使用されているジアゾ感光紙（以下、単
に感光紙と称することもある）は、支持体である
紙の表面（又は紙の表面にプレコート層を設けそ
の上）にジアゾ化合物、又はジアゾ化合物とそれ
と反応して染料をつくるカツプリング成分とを主
体として、これに安定剤として酸、金属塩等の助
剤、更に画像濃度補強剤としてシリカを添加して
なる感光液を塗布して感光層を形成し色調、濃
度、解像力、現像性、保存性、褪色性、耐水性な
どを満足させ、一方支持体裏面には酸および金属
塩、ワツクス、グリコールなどの混合液を塗布し
カール防止、保存性、筆記性、感光紙ストツク性
等を満足させたものである。
そして、かかる感光紙をもつて複写を行なうに
はジアゾ複写機が使用されるが、ここでのジアゾ
複写機の多くは原稿と感光紙とを密着露光した後
これらを自動的に分離し、原稿を機外へ排出し、
また露光済みの感光紙を現像部へ導入させる自動
分離機構を備えており、この機構は通常異なる速
度比をもつ対ローラ間に前記の原稿と感光紙を挾
み、速度の速い方のローラ面に感光紙裏面を接触
させて感光紙と原稿との先端をずらし、感光紙の
みを現像部へ導入させるというものである。
しかし、このようなジアゾ複写機を使用して複
写を行なう際に原稿と感光紙とが分離されず現像
部へ導入されてしまうことが時々おこるのはよく
経験するところである。これが二成分系ジアゾ感
光紙で乾式現像法を採用している場合は、熱のた
めに原稿がカールする程度で差程問題とならない
が、一成分系ジアゾ感光紙で湿式現像法を採用し
ている場合には、原稿が現像液に濡れ最悪のとき
には原稿としての価値をまつたく矢なつてしまう
ことがある。
従つて、現在でも例えば上記のような自動分離
機構によつて完全に又はほぼ完全に近いまでに原
稿との分離が容易に行なわれうる感光紙の研究が
随所で行なわれている。その１つとして、特公昭
42−21845号公報ではプレコート層にワツクスを
含有せしめて感光紙の感光層側の摩擦抵抗を下
げ、これにより複写機内における搬送性を向上さ
せたジアゾ感光紙が提案されている。だが、この
感光紙も自動分離率（不分離枚数／給紙枚数）は
未だ充分であるとはいえないのが実情である。
本発明者らは、以前よりジアゾ感光紙に関する
研究を多年行なつてきたが、感光層側の摩擦抵抗
を下げると共に、支持体裏面側をジアゾ複写機の
前記速度比の速いローラ面にくいつきいい様に、
〓〓〓〓〓
換言すれば支持体裏面側を逆に摩擦抵抗を上げる
ように工夫すれば自動分離率が向上すると考え、
種々の実験、検討を繰返した結果本発明を完成す
るにいたつた。
しかして本発明の目的は、密着露光後の原稿と
の分離が極めて順調になしうるジアゾ感光紙を提
供することにある。本発明の他の目的は、これま
でのジアゾ感光紙と同等な特性（色調、濃度、解
像力、現像性、褪色性、耐水性、カール防止性、
保存性、筆記性、ストツク性など）を有するジア
ゾ感光紙を提供することにある。
すなわち本発明は、紙支持体表面のジアゾ感光
層側に0.05〜0.5ｇ/m2量のワツクスを存在せし
め、また該紙支持体裏面に0.02〜0.2ｇ/m2量の粗
面形成剤又は0.05〜0.5ｇ/m2量の湿潤剤を存在せ
しめたことを特徴とするジアゾ感光紙である。
本発明に係る感光紙は勿論一成分型、二成分型
のもののいずれにも該当するものである。またワ
ツクスはプレコート層又は感光層に含まれて、あ
るいはそれら両層に含まれて存在されてよい。こ
こで使用されるワツクスとしては炭化水素ワツク
ス、ロジン、低分子量ポリエチレンワツクス、ポ
リプロピレン、石ろう、スターチのごとき感光紙
の感光層面の摩擦抵抗を低下させる効果を有する
ものがあげられ、１種又は２種以上が併用され
る。ワツクスの量は0.05〜0.5ｇ/m2の範囲が適当
であり、0.05ｇ/m2以下であると意図する効果が
発揮できず、逆に0.5ｇ/m2以上であると感光層形
成液あるいはプレコート層形成液の液安定性が低
下するので望ましくない。
紙支持体の裏面（感光層側の反対面）にはスリ
ツプ防止剤として粗面形成剤、湿除剤のいずれか
が存在せしめられる。ここにいう粗面形成剤とは
粗面形成能のある物質を意味し、例えばクレー、
チタン、酸化亜鉛、アルミナ、シリカ、タルクな
どが該当する。これらは１種又は２種以上が併用
されてよい。また湿潤剤とは吸湿性のある物質を
意味し、例えばエチレングリコール、塩化亜鉛、
界面活性剤などが該当し、これらも１種又は２種
以上が同時に併用されてよい。これらスリツプ防
止剤が粗面形成剤である場合には0.02〜0.2ｇ/m2
の範囲内で、湿潤剤である場合には0.05〜0.5ｇ/
m2の範囲内で使用され、これらはバツクコート層
に含有されるかたちで紙支持体の裏面に付着され
る。付着量（存在量）が前記の範囲から外れる
と、意図する効果が奏されなかつたり、感触性が
悪くなつたり、さらには感光紙がカールしやすい
などの欠陥があらわれ好ましくない。
なお本発明に係る感光紙はワツクス、スリツプ
防止剤が特定の範囲で配合された他はこれまでの
ジアゾ感光紙と何等異なるところはない。従つ
て、通常使用されているジアゾ化合物、カツプリ
ング成分、酸安定剤、その他助剤、プレコート層
に用いられるバインダー、シリカなどの画像濃度
補強剤等がすべて本発明感光紙に使用される。
実際に本発明の感光紙をつくるには、例えば55
ｇ/m2の上質紙の裏面にスリツプ防止剤を含んだ
バツクコート層形成液を塗布乾燥し、次いでこの
上質紙の表面にプレコート層を設けその上にワツ
クスを含んだ感光層形成液を塗布乾燥すればよ
い。このようにしてつくられた感光紙は所期の目
的を充分達成しうるものでルある。
次に実施例および比較例を示す。
実施例 １
シリカ ３重量％
ポリ酢酸ビニルエマルジヨン（分子量約3000、固
形分50％） 10重量％
ポリエチレンエマルジヨン（分子量約5000、固形
分30％） １重量％
水 残 部
よりなるプレコート層形成液を調製した。この調
製は水60部中にシリカ（平均粒径約３μ）をよく
分散し、ポリ酢酸ビニルエマルジヨンを加え緩や
かに撹拌した後、ポリエチレンエマルジヨンをさ
らに添加し再び緩やかに撹拌し、最後に水を加え
て全量を100部（100重量部）とした。
一方、下記処方の感光液およびバツクコート層
形成液を用意する。
（感光液）
ジプロピレングリコール ３ 重量％
酒石酸 3.5重量％
２・３−ジヒドロキシナフタレン−６−スルホン
酸ソーダ ２ 重量％
４−（Ｎ−エチル−Ｎ−ヒドロキシエチル）アミ
ノベンゼンジアゾニウム1/2Zncl2 １ 重量％
塩化亜鉛 ２ 重量％
サポニン 0.1重量％
水 残 部
〓〓〓〓〓
（バツクコート層形成液）
シリカ 0.03重量％
クエン酸 0.01重量％
水 残 部
次いで、前記プレコート層形成液を複写用原紙
（55ｇ/m2の上質紙）の表面に乾燥時付着量が３
ｇ/m2となるように塗布した後、この上に感光液
を乾燥時付着量が約1.5ｇ/m2となるように塗布し
た。さらに原紙の裏面に前記バツクコート層形成
液を乾燥時付着量が約0.05ｇ/m2となるように塗
布してジアゾ感光紙を得た。
実施例 ２
シリカ ３重量％
ポリ酢酸ビニルエマルジヨン（分子量約5000、固
形分50％） 10重量％
水 残 部
よりなるプレコート層形成液を実施例１と同様な
手法によつて調整した。
一方、下記処方の感光液およびバツクコート層
形成液を用意する。
（感光液）
ジプロピレングリコール ３ 重量％
酒石酸 3.5重量％
２・３−ジヒドロキシナフタレン−６−スルホン
酸ソーダ ３ 重量％
４−（Ｎ−エチル−Ｎ−ヒドロキシエチル）アミ
ノベンゼンジアゾニウム1/2Zncl2 １ 重量％
塩化亜鉛 ２ 重量％
サポニン 0.1重量％
ポリエチレンエマルジヨン（分子量約5000、固形
分30％） １ 重量％
水 残 部
（バツクコート層形成液）
エチレングリコール 0.1 重量％
クエン酸 0.05重量％
水 残 部
次いで、これらのプレコート層形成液、感光液
およびバツクコート層形成液を用いて実施例１と
同じ操作によつてジアゾ感光紙を得た。
実施例 ３
実施例１のプレコート層形成液およびバツクコ
ート層形成液、並びに実施例２の感光液を用いて
実施例１と同じ操作によつてジアゾ感光紙を得
た。
比較例
実施例１のバツクコート層形成液からシリカを
除いた以外は実施例１とまつたく同様にしてジア
ゾ感光紙を得た。
以上４種の感光紙についての原稿との分離試験
をジアゾ複写機（リコピーハイスタート６、KK
リコー製）により行なつた。結果は下記のとおり
であり、本発明感光紙の分離性のすぐれているの
が認められた。
The present invention relates to a diazo photosensitive paper that can be easily separated automatically from an original during a copying operation. Generally used diazo photosensitive paper (hereinafter sometimes simply referred to as photosensitive paper) has a diazo compound or a diazo compound on the surface of the paper that is the support (or on which a precoat layer is provided on the surface of the paper). A photosensitive layer is formed by applying a photosensitive liquid consisting mainly of a coupling component that reacts with the above to form a dye, to which auxiliary agents such as acids and metal salts are added as stabilizers, and silica is added as an image density reinforcing agent. It satisfies the color tone, density, resolution, developability, storage stability, fading resistance, water resistance, etc. On the other hand, a mixture of acids and metal salts, wax, glycol, etc. is applied to the back of the support to prevent curling, improve storage stability, It satisfies the writing properties, photosensitive paper storage properties, etc. A diazo copying machine is used to make copies using such photosensitive paper, but most of these diazo copying machines automatically separate the original and the photosensitive paper after they are exposed in close contact. is discharged outside the machine,
It is also equipped with an automatic separation mechanism that introduces the exposed photosensitive paper into the developing section. This mechanism usually sandwiches the original and the photosensitive paper between pairs of rollers that have different speed ratios, and the roller surface with the faster speed The back side of the photosensitive paper is brought into contact with the paper, the leading edges of the photosensitive paper and the document are shifted, and only the photosensitive paper is introduced into the developing section. However, when making copies using such a diazo copying machine, it is a common experience that sometimes the original and the photosensitive paper are not separated and are introduced into the developing section. If this is a two-component diazo-sensitive paper and a dry developing method is used, the heat will cause the document to curl, which is not a big problem, but if one-component diazo-sensitive paper is used and a wet developing method is used, In such cases, the original may get wet with the developer and, in the worst case scenario, its value as an original may be lost. Therefore, even now, research is being carried out on photosensitive paper that can be easily separated completely or almost completely from the original using, for example, the above-mentioned automatic separation mechanism. One of them is Tokko Akira.
Japanese Patent No. 42-21845 proposes a diazo photosensitive paper in which the precoat layer contains wax to lower the frictional resistance on the photosensitive layer side of the photosensitive paper, thereby improving its transportability in a copying machine. However, the reality is that the automatic separation rate (number of non-separated sheets/number of sheets fed) of this photosensitive paper is still not sufficient. The present inventors have been conducting research on diazo photosensitive paper for many years.In addition to lowering the frictional resistance on the photosensitive layer side, the back side of the support can be easily attached to the high speed roller surface of the diazo copying machine. As,
〓〓〓〓〓
In other words, we believe that the automatic separation rate can be improved by increasing the frictional resistance on the back side of the support.
As a result of repeated various experiments and studies, we have completed the present invention. SUMMARY OF THE INVENTION It is, therefore, an object of the present invention to provide a diazo-sensitive paper that can be separated from an original document after contact exposure very smoothly. Another object of the present invention is to have properties equivalent to those of conventional diazo photosensitive paper (color tone, density, resolution, developability, fading resistance, water resistance, anti-curling properties,
The purpose of the present invention is to provide a diazo-sensitive paper having excellent storage properties, writing properties, storage properties, etc. That is, in the present invention, wax is present in an amount of 0.05 to 0.5 g/m 2 on the diazo photosensitive layer side of the surface of the paper support, and a roughening agent or A diazo-sensitive paper characterized in that a wetting agent is present in an amount of 0.05 to 0.5 g/m 2 . The photosensitive paper according to the present invention may of course be of either one-component type or two-component type. Further, the wax may be present in the precoat layer or the photosensitive layer, or in both layers. The waxes used here include those having the effect of reducing the frictional resistance of the photosensitive layer surface of the photosensitive paper, such as hydrocarbon wax, rosin, low molecular weight polyethylene wax, polypropylene, paris wax, and starch. Two or more types are used in combination. The appropriate amount of wax is in the range of 0.05 to 0.5g/ m2 ; if it is less than 0.05g/ m2 , the intended effect cannot be achieved, and if it is more than 0.5g/m2, the photosensitive layer forming liquid Otherwise, the stability of the precoat layer forming liquid is decreased, which is undesirable. On the back side of the paper support (the side opposite to the photosensitive layer side), either a surface roughening agent or a wetting agent is present as an anti-slip agent. The surface roughening agent referred to here means a substance that has the ability to form a rough surface, such as clay,
Examples include titanium, zinc oxide, alumina, silica, and talc. These may be used alone or in combination of two or more. Wetting agents also mean hygroscopic substances, such as ethylene glycol, zinc chloride,
This includes surfactants and the like, and these may also be used alone or in combination of two or more. When these anti-slip agents are roughening agents, 0.02 to 0.2 g/m 2
within the range of 0.05-0.5g/if it is a wetting agent.
m 2 and these are applied to the back side of the paper support in the form of a backcoat layer. If the adhesion amount (abundance) is out of the above range, the intended effect may not be achieved, the tactility may deteriorate, and furthermore, defects such as the photosensitive paper being easily curled may occur, which is not preferable. The photosensitive paper according to the present invention is no different from conventional diazo photosensitive paper except that wax and anti-slip agents are blended within a specific range. Therefore, all commonly used diazo compounds, coupling components, acid stabilizers, other auxiliary agents, binders used in the precoat layer, image density reinforcing agents such as silica, etc. are used in the photosensitive paper of the present invention. To actually make the photosensitive paper of the present invention, for example, 55
A back coat layer forming liquid containing an anti-slip agent is applied to the back side of g/ m2 high quality paper and dried. Next, a precoat layer is provided on the surface of this high quality paper, and a photosensitive layer forming liquid containing wax is applied on top of that and dried. do it. The photosensitive paper produced in this manner is capable of fully achieving its intended purpose. Next, examples and comparative examples will be shown. Example 1 Precoat layer forming liquid consisting of 3% by weight of silica, 10% by weight of polyvinyl acetate emulsion (molecular weight: approx. 3000, solid content: 50%), 1% by weight of polyethylene emulsion (molecular weight: approx. 5000, solid content: 30%), balance water. was prepared. This preparation involves dispersing silica (average particle size approximately 3μ) in 60 parts of water, adding polyvinyl acetate emulsion and stirring gently, then adding polyethylene emulsion and stirring gently again, and finally adding water. was added to make the total amount 100 parts (100 parts by weight). Meanwhile, a photosensitive solution and a back coat layer forming solution having the following formulations are prepared. (Photosensitive liquid) Dipropylene glycol 3% by weight Tartaric acid 3.5% by weight Sodium 2,3-dihydroxynaphthalene-6-sulfonate 2% by weight 4-(N-ethyl-N-hydroxyethyl)aminobenzenediazonium 1/2Zncl 2 1% by weight % Zinc chloride 2% by weight Saponin 0.1% by weight Water Balance〓〓〓〓〓
(Back coat layer forming liquid) Silica 0.03% by weight Citric acid 0.01% by weight Water Balance Next, the precoat layer forming liquid was applied to the surface of base paper for copying (55 g/m 2 wood-free paper) until the dry adhesion amount was 3.
After coating to give a dry weight of about 1.5 g/m 2 , a photosensitive liquid was applied thereon to give a dry weight of about 1.5 g/m 2 . Furthermore, the above-mentioned back coat layer forming liquid was applied to the back side of the base paper so that the dry amount of the coating layer was about 0.05 g/m 2 to obtain a diazo photosensitive paper. Example 2 A precoat layer forming solution consisting of 3% by weight silica, 10% by weight polyvinyl acetate emulsion (molecular weight approximately 5000, solid content 50%) and the remainder water was prepared in the same manner as in Example 1. Meanwhile, a photosensitive solution and a back coat layer forming solution having the following formulations are prepared. (Photosensitive liquid) Dipropylene glycol 3% by weight Tartaric acid 3.5% by weight Sodium 2,3-dihydroxynaphthalene-6-sulfonate 3% by weight 4-(N-ethyl-N-hydroxyethyl)aminobenzenediazonium 1/2Zncl 2 1% by weight % Zinc chloride 2% by weight Saponin 0.1% by weight Polyethylene emulsion (molecular weight approx. 5000, solid content 30%) 1% by weight Water Balance (back coat layer forming liquid) Ethylene glycol 0.1% by weight Citric acid 0.05% by weight Water Balance then: A diazo photosensitive paper was obtained in the same manner as in Example 1 using these precoat layer forming liquid, photosensitive liquid and back coat layer forming liquid. Example 3 A diazo photosensitive paper was obtained in the same manner as in Example 1 using the precoat layer forming liquid and back coat layer forming liquid of Example 1 and the photosensitive liquid of Example 2. Comparative Example A diazo photosensitive paper was obtained in exactly the same manner as in Example 1 except that silica was removed from the back coat layer forming solution. The above four types of photosensitive paper were tested for separation from originals using a diazo copier (Recopy High Start 6, KK).
(manufactured by Ricoh). The results are as follows, and it was confirmed that the photosensitive paper of the present invention had excellent separation properties.
【表】
〓〓〓〓〓
[Table] 〓〓〓〓〓
Claims (1)
ｇ/m2量のワツクスを存在せしめ、また該紙支持
体裏面側に0.02〜0.2ｇ/m2量の粗面形成剤又は
0.05〜0.5ｇ/m2量の湿潤剤を存在せしめたことを
特徴とするジアゾ感光紙。1 0.05 to 0.5 on the diazo photosensitive layer side of the paper support surface
g/m 2 amount of wax is present, and on the back side of the paper support, 0.02 to 0.2 g/m 2 amount of roughening agent or
A diazo-sensitive paper characterized in that a wetting agent is present in an amount of 0.05 to 0.5 g/m 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8497577A JPS5420718A (en) | 1977-07-18 | 1977-07-18 | Diazo sensitized paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8497577A JPS5420718A (en) | 1977-07-18 | 1977-07-18 | Diazo sensitized paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5420718A JPS5420718A (en) | 1979-02-16 |
| JPS6135543B2 true JPS6135543B2 (en) | 1986-08-13 |
Family
ID=13845611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8497577A Granted JPS5420718A (en) | 1977-07-18 | 1977-07-18 | Diazo sensitized paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5420718A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07117702B2 (en) * | 1986-11-17 | 1995-12-18 | コニカ株式会社 | Antistatic silver halide photographic light-sensitive material |
-
1977
- 1977-07-18 JP JP8497577A patent/JPS5420718A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5420718A (en) | 1979-02-16 |
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