JPS62255939A - Diazosensitized paper having excellent preliminary coloring property - Google Patents
Diazosensitized paper having excellent preliminary coloring propertyInfo
- Publication number
- JPS62255939A JPS62255939A JP9996186A JP9996186A JPS62255939A JP S62255939 A JPS62255939 A JP S62255939A JP 9996186 A JP9996186 A JP 9996186A JP 9996186 A JP9996186 A JP 9996186A JP S62255939 A JPS62255939 A JP S62255939A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- layer
- photosensitive
- precoat layer
- 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.)
- Pending
Links
- 238000004040 coloring Methods 0.000 title abstract 6
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 claims abstract description 31
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 239000000839 emulsion Substances 0.000 abstract description 3
- 239000000049 pigment Substances 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 239000011521 glass Substances 0.000 abstract description 2
- 239000012466 permeate Substances 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 abstract 2
- 239000007788 liquid Substances 0.000 description 19
- 239000002585 base Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000009472 formulation Methods 0.000 description 5
- 230000035699 permeability Effects 0.000 description 5
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- RYYVLZVUVIJVGH-UHFFFAOYSA-N caffeine Chemical compound CN1C(=O)N(C)C(=O)C2=C1N=CN2C RYYVLZVUVIJVGH-UHFFFAOYSA-N 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
- 150000008049 diazo compounds Chemical class 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 235000005074 zinc chloride Nutrition 0.000 description 2
- 239000011592 zinc chloride Substances 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- LPHGQDQBBGAPDZ-UHFFFAOYSA-N Isocaffeine Natural products CN1C(=O)N(C)C(=O)C2=C1N(C)C=N2 LPHGQDQBBGAPDZ-UHFFFAOYSA-N 0.000 description 1
- SZCWECLZCCHJRZ-UHFFFAOYSA-N NCCCN1CCOCC1.C1=CC=C2C=C(O)C(C(=O)O)=CC2=C1 Chemical compound NCCCN1CCOCC1.C1=CC=C2C=C(O)C(C(=O)O)=CC2=C1 SZCWECLZCCHJRZ-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229960001948 caffeine Drugs 0.000 description 1
- VJEONQKOZGKCAK-UHFFFAOYSA-N caffeine Natural products CN1C(=O)N(C)C(=O)C2=C1C=CN2C VJEONQKOZGKCAK-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- 239000000126 substance 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)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は初期発色性および最終発色濃度に優れたジアゾ
感光紙に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a diazo photosensitive paper with excellent initial color development and final color density.
（従来の技術）
ジアゾ感光紙は、基紙上にプレコート層を設けた後、該
プレコート層上に感光層を形成して構成される。プレコ
ート層は顔料と結合剤とでなり。(Prior Art) Diazo photosensitive paper is constructed by providing a precoat layer on a base paper and then forming a photosensitive layer on the precoat layer. The precoat layer consists of pigment and binder.
感光液の基紙中への浸透を防止するために設けられる。Provided to prevent the photosensitive liquid from permeating into the base paper.
ジアゾ感光紙には、湿式、乾式、半乾式の３つのタイプ
がある。湿式ジアゾ感光紙は、感光紙にジアゾ化合物の
みが塗布してあり、これを露光した後カンプリング成分
の溶液で現像される。乾式ジアゾ感光紙は、感光紙にジ
アゾ化合物、カップリング成分、カップリング抑制剤な
どが塗布され。There are three types of diazo paper: wet, dry, and semi-dry. Wet-type diazo photosensitive paper is a photosensitive paper coated with only a diazo compound, which is exposed and then developed with a solution of a compulsory component. Dry diazo photosensitive paper is a photosensitive paper coated with a diazo compound, a coupling component, a coupling inhibitor, etc.
露光後アンモニアガスにより現像される。半乾式ジアゾ
感光紙では、乾式ジアゾ感光紙においてアンモニアガス
に代えてアルカリ剤が用いられる。After exposure, it is developed with ammonia gas. In semi-dry diazo photosensitive paper, an alkali agent is used in place of ammonia gas in dry diazo photosensitive paper.
このようなジアゾ感光紙において、感光紙の発色性を向
上させるために、プレコート層の層厚を厚くする試みが
なされている。プレコート層の層厚を厚くすることによ
り、感光液の基紙中への浸透が防止され、それにより現
像時に形成されるジアゾ染料の量に比して形成される画
像の発色濃度が高くなる。しかし、プレコート層の層厚
が厚くなりすぎると感光紙の最終発色濃度は向上するも
のの、現像液の感光層中への浸透性が悪くなり。In such diazo photosensitive paper, attempts have been made to increase the thickness of the precoat layer in order to improve the color development of the photosensitive paper. Increasing the thickness of the precoat layer prevents the photosensitive liquid from penetrating into the base paper, thereby increasing the color density of the image formed compared to the amount of diazo dye formed during development. However, if the thickness of the precoat layer becomes too thick, although the final color density of the photosensitive paper improves, the permeability of the developer into the photosensitive layer deteriorates.
そのために、初期発色性（濃度）はかえって低下する。Therefore, the initial color development (density) is rather reduced.
特に、湿式や半乾式のジアゾ感光紙では。Especially with wet and semi-dry diazo paper.
乾式ジアゾ感光紙に比べて最終発色までに要する時間が
長（、初期発色性の低下が著しい。従って。Compared to dry diazo photosensitive paper, it takes a longer time to develop the final color (and the initial color development is significantly reduced).
感光紙を現像後、最終発色までに時間を要すると。After developing photosensitive paper, it takes time for the final color to develop.
現像作業者は、複写が失敗したものと錯覚し９発色が完
了する前にその感光紙を捨ててしまうおそれがある。The developing operator may be under the illusion that copying has failed, and may throw away the photosensitive paper before the development of nine colors is completed.
（発明が解決しようとする問題点）
本発明は上記従来の問題点を解決するものであり、その
目的とするところは、最終発色濃度のみならず初期発色
性にも優れたジアゾ感光紙を提供することにある。。(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems, and its purpose is to provide a diazo photosensitive paper that is excellent not only in final color density but also in initial color development. It's about doing. .
（問題点を解決するための手段）
本発明は、プレコート層の層厚を厚くして感光紙の発色
性を向上させる従来の方法に代えて、プレコート層の層
厚を調節して半乾式用現像液の感光紙表面の流下長をあ
る範囲にすることにより。(Means for Solving the Problems) Instead of the conventional method of increasing the thickness of the precoat layer to improve the color development of photosensitive paper, the present invention adjusts the thickness of the precoat layer to improve the color development of photosensitive paper. By controlling the flow length of the developer on the surface of the photosensitive paper within a certain range.
現像液の感光層中への浸透性が改善され、さらには、感
光紙のＲ終発色濃度を低下させることなく初期発色性を
向上させうる。との発明者の知見にもとづいて完成され
た。The permeability of the developer into the photosensitive layer is improved, and furthermore, the initial color development can be improved without reducing the R final color density of the photosensitive paper. It was completed based on the inventor's knowledge.
本発明の初期発色性に優れたジアゾ感光紙は。The diazo photosensitive paper of the present invention has excellent initial color development.
感光層とプレコート層とを有するジアゾ感光紙であって
、該プレコート層の層厚を調整することにより、該感光
紙表面の半乾式用現像液の流下長を４０〜７０ｎの範囲
とし、そのことにより上記目的が達成される。A diazo photosensitive paper having a photosensitive layer and a precoat layer, by adjusting the layer thickness of the precoat layer, the flow length of a semi-dry developer on the surface of the photosensitive paper is in the range of 40 to 70n, and The above objective is achieved.
感光紙表面の半乾式用現像液の流下長は、プレコート層
の層厚およびプレコート層形成液の分散度を変えること
により調節される。プレコート層には顔料の結合剤とし
て樹脂が用いられており。The flow length of the semi-dry developer on the surface of the photosensitive paper is adjusted by changing the thickness of the precoat layer and the degree of dispersion of the precoat layer forming liquid. The precoat layer uses resin as a binder for pigments.
その層厚が厚くなるほど感光紙表面の流下長が長くなる
。流下長が長くなると、現像液の感光層中への浸透性が
悪くなり、感光紙の初期発色性が低下する。しかし、プ
レコート層の層厚を単に薄くすると、プレコート層によ
る感光液の基紙中への浸透防止効果（下引き効果）が低
下するため、感光紙の最終発色濃度が不足する。そこで
２本発明者は、プレコート層形成液の分散性を向上させ
て粘度を高くして塗布しその層厚を薄くしてもプレコー
ト層の下引き効果が維持されうる。しかも現像液の感光
層中への浸透性を向上させうる。それにより、感光紙の
最終発色濃度を低下させることなく初期発色性を向上さ
せうる。との新たな知見を見出した。プレコート層形成
液の分散性を向上させプレコート層形成液の粘度は、従
来の５センチポアズに代えて、高粘度の１０〜２０セン
チポアズが採用される。１０センチポアズを下まわると
、プレコート層形成液の基紙への浸透が大きくなりプレ
コート層の下引き効果が低下して感光紙の最終発色濃度
を低減させることに□なる。２０センチポアズを上まわ
ると、エアーナイフコーターでのプレコート層の塗工が
不可能となる。The thicker the layer, the longer the length of flow on the surface of the photosensitive paper. As the flow length increases, the permeability of the developer into the photosensitive layer deteriorates, and the initial color development of the photosensitive paper deteriorates. However, if the thickness of the precoat layer is simply made thinner, the effect of the precoat layer on preventing penetration of the photosensitive liquid into the base paper (subbing effect) is reduced, resulting in insufficient final color density of the photosensitive paper. Therefore, the inventors of the present invention have improved the dispersibility of the precoat layer forming liquid to increase its viscosity, and even if the layer thickness is reduced, the subbing effect of the precoat layer can be maintained. Moreover, the permeability of the developer into the photosensitive layer can be improved. Thereby, the initial color development can be improved without reducing the final color density of the photosensitive paper. We discovered new knowledge. In order to improve the dispersibility of the precoat layer forming liquid, a high viscosity of 10 to 20 centipoise is adopted as the viscosity of the precoat layer forming liquid, instead of the conventional 5 centipoise. If it is less than 10 centipoise, the permeation of the precoat layer forming liquid into the base paper becomes large and the subbing effect of the precoat layer decreases, resulting in a decrease in the final color density of the photosensitive paper. If it exceeds 20 centipoise, it becomes impossible to apply the precoat layer with an air knife coater.
上記粘度範囲のプレコート層形成液により形成されるプ
レヨー１一層の層厚は、１〜３ｇ／ｍ”とされる。プレ
コート層の層厚は、エアーナイフコーターにてプレコー
ト層を塗工する際の塗工量により規定される。このよう
にして設定された層厚をもった感光紙表面の流下長は、
４０〜７０鰭の範囲となる。流下長は４５℃に傾けたガ
ラス板上に被測定感光紙を載せ、この感光紙表面に０．
０３ｃｃの半乾式（ＥＤ）現像液を滴下したときの１発
色領域の長さで示される。The layer thickness of one layer of Preyo 1 formed from the precoat layer forming liquid having the above viscosity range is 1 to 3 g/m''.The layer thickness of the precoat layer is determined by The flow length on the surface of photosensitive paper with the layer thickness set in this way is determined by the coating amount.
It ranges from 40 to 70 fins. The flow length is determined by placing the photosensitive paper to be measured on a glass plate tilted at 45°C, and applying 0.00000 to the surface of the photosensitive paper.
It is indicated by the length of one color development area when 0.3 cc of semi-dry (ED) developer is dropped.
流下長が４０１１を下まわると、プレコート層の下引き
効果が低下して感光液が基紙中に浸透するため、現像液
との反応効率を低下させる。そのために、感光紙の最終
発色濃度が低くなる。７０富諷を上まわると、感光紙の
最終発色濃度は向上するものの、現像液の感光層中への
浸透性が悪くなり、初期発色性を低下させる。When the flow length is less than 4011, the subbing effect of the precoat layer is reduced and the photosensitive liquid permeates into the base paper, reducing the reaction efficiency with the developer. As a result, the final color density of the photosensitive paper becomes low. If it exceeds 70 mm, the final color density of the photosensitive paper will improve, but the permeability of the developer into the photosensitive layer will deteriorate, resulting in a decrease in initial color development.
感光紙の現像後の発色濃度の経時変化を第１図に示す。Figure 1 shows the change in color density over time after development of the photosensitive paper.
ここで、最終発色濃度とは、現像後１時間経過後の発色
濃度を指す。Here, the final color density refers to the color density one hour after development.
感光紙の流下長と、初期発色濃度および最終発色濃度と
の関係を第２図に示す。ここで、初期発色濃度とは現像
後１０ｓｅｃ経過後の発色濃度を示す。FIG. 2 shows the relationship between the running length of the photosensitive paper and the initial color density and final color density. Here, the initial color density refers to the color density 10 seconds after development.
ジアゾ感光紙に９通常必要とされる最終発色濃度は１．
２５以上、そして初期発色濃度は１．００以上である。The final color density normally required for diazo paper is 1.
25 or more, and the initial color density is 1.00 or more.
本発明のジアゾ感光紙には、プレコート層、感光層のほ
かに、感光紙のカールを防止するため。In addition to a precoat layer and a photosensitive layer, the diazo photosensitive paper of the present invention includes a precoat layer and a photosensitive layer to prevent curling of the photosensitive paper.
基紙に対しプレコート層と反対側の面にバックコ−ト層
が設けられてもよい。バックコート層には。A back coat layer may be provided on the side of the base paper opposite to the precoat layer. For the back coat layer.
グリセリン、エチレングリコールなどが用いられる。Glycerin, ethylene glycol, etc. are used.
（実施例） 以下に本発明を実施例について述べる。(Example) The present invention will be described below with reference to examples.
カープレックスＦＰＳ−４（ｉｊ料、塩野義製薬社製）
ｋｇ
スチレン−アクリル系エマルジョン（４５％濃度。Carplex FPS-4 (ij material, manufactured by Shionogi & Co., Ltd.)
kg Styrene-acrylic emulsion (45% concentration.
樹脂２日本純薬社製） １０ｋｇ
水
１００Ｎ上記処方をホモミキサーにて３０分間混合分
散して粘度１３ｃｐｓのプレコート層形成液とした。こ
のプレコート層形成液を、エアーナイフコーターにより
、基紙（坪量：５ｇｇ／ｍ）上に塗布し、乾燥してプレ
コート層を形成した。プレコート層の層厚は２ｇ／ｍ２
であった。Resin 2 (manufactured by Nippon Pure Chemical Industries) 10kg
water
100N The above formulation was mixed and dispersed in a homomixer for 30 minutes to obtain a precoat layer forming liquid with a viscosity of 13 cps. This precoat layer forming liquid was applied onto a base paper (basis weight: 5 gg/m) using an air knife coater and dried to form a precoat layer. The thickness of the pre-coat layer is 2g/m2
Met.
４−ジアゾ−２・５−ジブトキシ−１−モルホリンベン
ゼンクロライド１／２塩化亜鉛（栗田化学社製）
１ 、２ ｋｇ２−ヒド
ロキシ−３−ナフトエ酸アミノプロピルモルホリン（栗
田化学社製） １ 、２ ｋｇクエン酸
２．０ｋｇカフェイ
ン ２．０ｋｉｒ塩化亜鉛
１ 、５ ｋｇメチレン
ブルー ０．００５ｋｇ水
１００１
上記処方を混合して感光層形成液とした。この感光層形
成液をプレコート層上に塗布し、乾燥して感光層を形成
した。感光層の層厚は０．４ ｇ ／ ｍであった。4-Diazo-2,5-dibutoxy-1-morpholinebenzene chloride 1/2 zinc chloride (manufactured by Kurita Chemical Co., Ltd.)
1,2 kg 2-hydroxy-3-naphthoic acid aminopropylmorpholine (manufactured by Kurita Chemical Co., Ltd.) 1,2 kg citric acid
2.0kg caffeine 2.0kir zinc chloride
1.5 kg methylene blue 0.005 kg water
1001
The above formulations were mixed to prepare a photosensitive layer forming liquid. This photosensitive layer forming liquid was applied onto the precoat layer and dried to form a photosensitive layer. The layer thickness of the photosensitive layer was 0.4 g/m.
酢酸ビニルエマルジョン（５６％、昭和高分子社製）
４．０ｋｇ水
１２
Ｏｆｆ上記処方を混合してバンクコート層形成液とした
。このバックコート層形成液を基紙のプレコート層とは
反対側に塗布し、乾燥してバックコート層を形成した。Vinyl acetate emulsion (56%, manufactured by Showa Kobunshi Co., Ltd.)
4.0kg water
12
Off The above formulations were mixed to prepare a bank coat layer forming liquid. This backcoat layer forming liquid was applied to the side of the base paper opposite to the precoat layer and dried to form a backcoat layer.
バックコート層の層厚は０．４ｇ／Ｍであった。The thickness of the back coat layer was 0.4 g/M.
このように得られたジアゾ感光紙の流下長は５９■■で
あった。The flow length of the diazo-sensitive paper thus obtained was 59■■.
このジアゾ感光紙を下記処方の現像液を用いて現像した
ところ、感光紙の初期発色濃度（現像後−１０ｓｅｃ後
の発色濃度）は１．０９．そして最終発色濃度は１．２
９であった。When this diazo photosensitive paper was developed using a developer with the following formulation, the initial color density of the photosensitive paper (color density after -10 seconds after development) was 1.09. And the final color density is 1.2
It was 9.
モノエタノールアミン ３重量部ジエチレ
ングリコール七ノエチルエーテル４重量部
エチレングリコール ３ ｆｆ１ｌＨＢ
几較舅↓
プレコート層形成液の混合分散時間を１０分としたこと
以外は、実施例と同様の処方を混合して粘度６ ｃｐｓ
のプレコート層形成液を得た。Monoethanolamine 3 parts by weight Diethylene glycol 7 noethyl ether 4 parts by weight Ethylene glycol 3 ff1lHB
Comparison↓ The same formulation as in Example was mixed, except that the mixing and dispersion time of the precoat layer forming liquid was 10 minutes, and the viscosity was 6 cps.
A precoat layer forming solution was obtained.
このプレコート層形成液を用いて、塗工量を０．７ｇ
／ ｌとしたこと以外は、実施例と同様の方法により、
基紙上にプレコート層を形成した。以下。Using this precoat layer forming liquid, the coating amount was 0.7g.
By the same method as in the example except that / l was used,
A precoat layer was formed on the base paper. below.
実施例と同様の方法により、感光層およびバックコート
層を形成した。A photosensitive layer and a back coat layer were formed by the same method as in the example.
このように得られたジアゾ感光紙の流下長は３０關であ
った。The flow length of the diazo-sensitive paper thus obtained was 30 degrees.
このジアゾ感光紙を実施例と同様の組成の現像液を用い
て現像したところ、感光紙の初期発色濃度（現像後１０
ｓｅｃ後の発色濃度）は１．０４．そして最終発色濃度
は１．２３であった。When this diazo photosensitive paper was developed using a developer having the same composition as in the example, the initial color density of the photosensitive paper (10
The color density after sec) is 1.04. The final color density was 1.23.
几較撚１ 実施例と同様のプレコート層形成液を用いて。Comparison twist 1 Using the same precoat layer forming liquid as in the example.
塗工量を５ ｇ／ｒｄとしたこと以外は、実施例と同様
の方法により、基紙上にプレコート層を形成した。以下
、実施例と同様の方法により、感光層およびバックコー
トＦＪを形成した。A precoat layer was formed on the base paper in the same manner as in the example except that the coating amount was 5 g/rd. Thereafter, a photosensitive layer and a back coat FJ were formed by the same method as in the example.
このように得られたジアゾ感光紙の流下長は７８龍であ
った。The flow length of the diazo-sensitive paper thus obtained was 78 mm.
このジアゾ感光紙を実施例と同様の組成の現像液を用い
て現像したところ、感光紙の初期発色濃度（現像後１０
ｓｅｃ後の発色濃度）は０．９７．そして最終発色濃度
は１．３３であった。When this diazo photosensitive paper was developed using a developer having the same composition as in the example, the initial color density of the photosensitive paper (10
Color density after sec) is 0.97. The final color density was 1.33.
実施例および比較例から明らかなように１本発明のジア
ゾ感光紙は、従来の感光紙に比べて、初期発色性および
最終発色濃度のいずれにおいても優れている。流下長が
７８酊のジアゾ感光紙は、最終発色濃度には優れるもの
の、初期発色性に劣る。As is clear from the Examples and Comparative Examples, the diazo photosensitive paper of the present invention is superior to conventional photosensitive papers in both initial color development and final color density. The diazo photosensitive paper with a flow length of 78 mm has an excellent final color density, but is inferior in initial color development.
流下長が３０−ａのジアゾ感光紙は、最終発色濃度が低
い。Diazo photosensitive paper with a flow length of 30-a has a low final color density.
（発明の効果）
本発明のジアゾ感光紙は、このように、初期発色性およ
び最終発色濃度のいずれについても優れている。従って
、複写の良否が一目瞭然に判定され得る。それゆえ、従
来のように現像作業者が感光紙の発色が遅いために複写
が失敗であると誤って判断し、その感光紙を捨ててしま
うというようなおそれがなくなる。(Effects of the Invention) The diazo photosensitive paper of the present invention is thus excellent in both initial color development and final color density. Therefore, the quality of the copy can be determined at a glance. Therefore, there is no longer a risk that the developing operator may erroneously judge that the copying has failed due to the slow color development of the photosensitive paper and throw away the photosensitive paper, as was the case in the past.
４、図面の簡１なン゛口
第１図はジアゾ感光紙の現像後の発色濃度の経時変化を
示すグラフ、第２図はジアゾ感光紙の流下長と、感光紙
の初期発色濃度（現像後１０ｓｅｃ後の発色濃度）およ
び最終発色濃度との関係を示すグラフである。4. A simple introduction to the drawings Figure 1 is a graph showing the change in color density after development of diazo photosensitive paper, and Figure 2 is a graph showing the flow length of diazo photosensitive paper and the initial color density of photosensitive paper (after development). It is a graph showing the relationship between the color density (color density after 10 seconds) and the final color density.
以上that's all
Claims (1)
って、 該プレコート層の層厚を調整することにより、該感光紙
の流下長を４０〜７０ｍｍの範囲とした初期発色性に優
れたジアゾ感光紙。[Claims] 1. A diazo photosensitive paper having a photosensitive layer and a precoat layer, wherein the initial flow length of the photosensitive paper is set in the range of 40 to 70 mm by adjusting the layer thickness of the precoat layer. Diazo photosensitive paper with excellent color development.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9996186A JPS62255939A (en) | 1986-04-30 | 1986-04-30 | Diazosensitized paper having excellent preliminary coloring property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9996186A JPS62255939A (en) | 1986-04-30 | 1986-04-30 | Diazosensitized paper having excellent preliminary coloring property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62255939A true JPS62255939A (en) | 1987-11-07 |
Family
ID=14261274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9996186A Pending JPS62255939A (en) | 1986-04-30 | 1986-04-30 | Diazosensitized paper having excellent preliminary coloring property |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62255939A (en) |
-
1986
- 1986-04-30 JP JP9996186A patent/JPS62255939A/en active Pending
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