JPH0141984B2 - - Google Patents
Info
- Publication number
- JPH0141984B2 JPH0141984B2 JP56074108A JP7410881A JPH0141984B2 JP H0141984 B2 JPH0141984 B2 JP H0141984B2 JP 56074108 A JP56074108 A JP 56074108A JP 7410881 A JP7410881 A JP 7410881A JP H0141984 B2 JPH0141984 B2 JP H0141984B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- plate
- developer
- image
- 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
- 239000007788 liquid Substances 0.000 claims description 37
- 238000007639 printing Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 28
- -1 polyethylene Polymers 0.000 claims description 21
- 238000005530 etching Methods 0.000 claims description 17
- 239000002904 solvent Substances 0.000 claims description 11
- 229920001577 copolymer Polymers 0.000 claims description 10
- 239000003086 colorant Substances 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 6
- PMJHHCWVYXUKFD-SNAWJCMRSA-N (E)-1,3-pentadiene Chemical compound C\C=C\C=C PMJHHCWVYXUKFD-SNAWJCMRSA-N 0.000 claims description 5
- 239000013032 Hydrocarbon resin Substances 0.000 claims description 5
- 229920006270 hydrocarbon resin Polymers 0.000 claims description 5
- PMJHHCWVYXUKFD-UHFFFAOYSA-N piperylene Natural products CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 claims description 5
- 239000004215 Carbon black (E152) Substances 0.000 claims description 4
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims description 4
- 229920005989 resin Polymers 0.000 description 14
- 239000011347 resin Substances 0.000 description 14
- CNPVJWYWYZMPDS-UHFFFAOYSA-N 2-methyldecane Chemical compound CCCCCCCCC(C)C CNPVJWYWYZMPDS-UHFFFAOYSA-N 0.000 description 11
- 239000000203 mixture Substances 0.000 description 9
- 239000006185 dispersion Substances 0.000 description 7
- 239000006229 carbon black Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 229920001038 ethylene copolymer Polymers 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229920000180 alkyd Polymers 0.000 description 2
- 235000012745 brilliant blue FCF Nutrition 0.000 description 2
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 description 1
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 description 1
- QLZJUIZVJLSNDD-UHFFFAOYSA-N 2-(2-methylidenebutanoyloxy)ethyl 2-methylidenebutanoate Chemical compound CCC(=C)C(=O)OCCOC(=O)C(=C)CC QLZJUIZVJLSNDD-UHFFFAOYSA-N 0.000 description 1
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 1
- HNNQYHFROJDYHQ-UHFFFAOYSA-N 3-(4-ethylcyclohexyl)propanoic acid 3-(3-ethylcyclopentyl)propanoic acid Chemical compound CCC1CCC(CCC(O)=O)C1.CCC1CCC(CCC(O)=O)CC1 HNNQYHFROJDYHQ-UHFFFAOYSA-N 0.000 description 1
- UXIKEUINZRRDQO-UHFFFAOYSA-N 3-methylphenol;phenol Chemical compound OC1=CC=CC=C1.CC1=CC=CC(O)=C1 UXIKEUINZRRDQO-UHFFFAOYSA-N 0.000 description 1
- 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
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 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
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical group 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 239000005042 ethylene-ethyl acrylate Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000000787 lecithin Substances 0.000 description 1
- 229940067606 lecithin Drugs 0.000 description 1
- 235000010445 lecithin Nutrition 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- FDZZZRQASAIRJF-UHFFFAOYSA-M malachite green Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1C(C=1C=CC=CC=1)=C1C=CC(=[N+](C)C)C=C1 FDZZZRQASAIRJF-UHFFFAOYSA-M 0.000 description 1
- 229940107698 malachite green Drugs 0.000 description 1
- 150000002688 maleic acid derivatives Chemical class 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- SGGOJYZMTYGPCH-UHFFFAOYSA-L manganese(2+);naphthalene-2-carboxylate Chemical compound [Mn+2].C1=CC=CC2=CC(C(=O)[O-])=CC=C21.C1=CC=CC2=CC(C(=O)[O-])=CC=C21 SGGOJYZMTYGPCH-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229940043267 rhodamine b Drugs 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- HFQQZARZPUDIFP-UHFFFAOYSA-M sodium;2-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HFQQZARZPUDIFP-UHFFFAOYSA-M 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 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
- 238000012546 transfer Methods 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
- JEVGKYBUANQAKG-UHFFFAOYSA-N victoria blue R Chemical compound [Cl-].C12=CC=CC=C2C(=[NH+]CC)C=CC1=C(C=1C=CC(=CC=1)N(C)C)C1=CC=C(N(C)C)C=C1 JEVGKYBUANQAKG-UHFFFAOYSA-N 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-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
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/12—Developers with toner particles in liquid developer mixtures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Liquid Developers In Electrophotography (AREA)
Description
［産業上の利用分野］
本発明は、印刷版を作成する製版方法に用いら
れる液体現像剤に関する。
［従来の技術］
従来より、平版印刷版は、印刷基板上に感光性
樹脂を塗布したものが使用されているが、銀塩系
感光材料や電子写真感光材料に比べて感度が極め
て低い。このため、感光性樹脂を用いた印刷版を
露光するには、写真製版法によつて製作した銀塩
系感光材料をこれと密着させて露光することが行
なわれている。近年、省力化、省資源化を目的と
して銀塩系の所謂リスフイルム（リス現像液によ
つて現像されるハロゲン化銀写真感光材料）を製
作する写真製版工程を除き、原稿から直接撮影し
て印刷版を製作する製版方法が登場してきた。
電子写真方式を利用して原稿から直接撮影によ
つて印刷版を製作する電子写真製版方法は公知で
ある。例えば、特公昭37−17162号、同38−6961
号、同39−12703号公報等には、粗面化したアル
ミニウム板上に光導電性層を設け、通常の電子写
真法によつて帯電、露光、現像してトナー画像を
形成し、非画像部（トナーが付着していない部
分）の光導電性層をアルカリ溶液で溶出して、印
刷版を作成する方法が記載されている。更に、特
開昭54−144203号公報には、電子写真方式により
酸化亜鉛感光体に形成されたトナー画像を、アル
ミニウム板上にエポキシ樹脂層を設けた転写印刷
版に転写し、熱定着後、非画像部のエポキシ樹脂
層を溶剤で溶出して平版印刷版を作成する方法が
記載されている。
［発明が解決しようとする課題］
これら従来の技術においては、電子写真方式に
よつてトナー画像を得る際、乾式現像剤が使用さ
れているため、画像の解像力が悪いという欠点が
ある。一般に電子写真法でトナー画像を得る場
合、湿式現像法は乾式現像法に比べてはるかに解
像力が良く、画像再現性に優れている特徴を有す
る。しかし、電子写真方式によつてトナー画像を
形成した後、非画像部を溶解除去する（以下、エ
ツチングと称する）工程を含む電子写真製版方法
においては、未だ有用な湿式現像剤が知られてい
ない。即ち、液体現像剤で湿式現像を行なつてト
ナー画像を形成後、エツチングして印刷版を製造
する際、画像部（トナーの付着している部分）も
溶出し易く、画像部の耐エツチング性に乏しい欠
点があつた。
本発明の目的は、電子写真方式による高解像力
を有する印刷版を得るための製版方法に用いられ
る液体現像剤を提供することにある。
本発明の他の目的は、エツチング工程を含む電
子写真製版方法において耐エツチング性にすぐれ
た液体現像剤を提供することにある。
更に本発明の他の目的は、分散安定性にすぐれ
た液体現像剤を提供することにある。
［課題を解決するための手段］
本発明の上記目的は、支持体上に光導電性層を
有する印刷原版を、電子写真方式にて電気的潜像
を形成させ、画像露光後、現像剤で現像し、トナ
ー画像を形成させ、定着後、非画像部の光導電性
層を溶剤でエツチングして、印刷版を作成する製
版方法に用いられる現像剤であつて、電気絶縁性
液体中に(a)着色剤、(b)電荷制御剤、及び(c)ポリエ
チレン、ポリプロピレン、エチレン共重合体、プ
ロピレン共重合体の１種または２種以上、及び(d)
炭化水素溶剤に可溶性の１，３−ペンタジエンを
含有する炭化水素樹脂を含有することを特徴とす
る液体現像剤によつて達成される。
以下、本発明について詳細に説明する。
一般に、電子写真用液体現像剤は着色剤、被覆
剤、電荷制御剤、電気絶縁性液体からなる担体液
よりなり、被覆剤として種々の高分子化合物が使
用されている。例えば、アルキツド樹脂、アクリ
ル系樹脂、スチレン系樹脂、塩化ビニル樹脂、ポ
リアミド樹脂、ゴム系樹脂、環化ゴム、ロジン誘
導体や、電子写真用液体現像剤についてではある
が、ブタジエン系樹脂も知られている（特開昭50
−75440号、特公昭50−25341号参照）が、これら
の樹脂を添加した現像剤をエツチング工程を含む
電子写真製版に適用した場合、耐エツチング性に
乏しいか又は解像力が低い欠点を有する。又、特
公昭50−33777号、同51−29653号、同51−47338
号、同52−3582号、特開昭48−49445号公報等に
はポリエチレン、エチレン−酢酸ビニル共重合
体、ポリプロピレン等を含有する液体現像剤が提
案されている。しかしながら、これらの技術は通
常のコピー分野においてトナー画像を紙などの転
写紙等に転写する際の転写性を向上させることを
目的としているに過ぎない。
本発明に係る液体現像剤は、電気絶縁性液体中
に(a)着色剤、(b)電荷制御剤、(c)ポリエチレン、ポ
リプロピレン、エチレン共重合体体、プロピレン
共重合体の１種または２種以上、及び(d)炭化水素
溶剤に可溶性の１，３−ペンタジエンを含有する
炭化水素樹脂を含有するものである。
本発明に使用されるエチレン共重合体、プロピ
レン共重合体は、エチレン、プロピレンと他のモ
ノマー１種以上との共重合体であり、他のモノマ
ーとしては例えば、アクリル酸メチル、アクリル
酸エチル、メタクリル酸エチル、酢酸ビニル、塩
化ビニル、テトラフルオロエチレン等がある。ポ
リエチレン、ポリプロピレン、エチレン共重合
体、プロピレン共重合体の１種または２種以上の
添加全量は電気絶縁性液体、100重量部に対し、
0.01〜５重量部、好ましくは0.1〜２重量部であ
る。これらの樹脂の使用により、エツチング工程
を含む電子写真製版法において耐エツチング性が
向上し、解像力のすぐれた印刷版を得ることがで
きる。１，３−ペンタジエンを含有する炭化水素
樹脂としては、例えば特公昭50−29951号公報記
載の樹脂が使用される。市販品としては、クイン
トンＣ−100、Ｃ−200、Ｄ−200、Ｕ−200（以上、
いずれも日本ゼオン社製）等がある。これらの樹
脂の添加量は、電気絶縁性液体100重量部に対し、
0.01〜５重量部、好ましくは0.1〜２重量部であ
る。これらの樹脂の添加によりトナー粒子の分散
性及び分散安定性を著しく向上させることができ
る。電荷制御剤としては、例えば、レシチン、ナ
フテン酸金属塩、アルキルベンゼンスルホン酸
塩、ジアルキルナフタレンスチレン酸塩、モノま
たはジ、アルキルスルホコハク酸塩、ジアルキル
フオスフエート塩、アマニ油、大豆油、アルキツ
ド樹脂等がある。添加量としては、種類によつて
異なるので一義的には定められないが、液体現像
剤の液の抵抗が例えば109Ωcm以上となるように
適宜選択することが好ましい。また着色剤として
は顔料、染料等が使用され、特に限定されるもの
ではない。例えば、カーボンブラツク、銅フタロ
シアニン、フタロシアニングリーン、マラカイト
グリーン、ローダミン、ビクトリアブルー、オイ
ルブラツク等がある。着色剤の使用量は限定的で
はないが、電気絶縁性液体100重量部に対し0.01
〜1.00重量部、好ましくは0.01〜0.1重量部であ
る。また電気絶縁性液体としては電気抵抗値が
109Ωcm以上の脂肪族炭化水素、芳香族炭化水素、
ハロゲン化炭化水素等の電気絶縁性液体が使用さ
れる。例えばｎ−ヘキサン、ｎ−ペンタン、塩素
化パラフイン、イソパラフイン、ケロシン等があ
る。市販品としては、例えばアイソパーＧ（エツ
ソ石油化学社製）などがある。更に、本発明に係
る液体現像剤中には必要に応じ、他の天然または
合成高分子化合物を添加することができる。
本発明に係る液体現像剤は、例えば電気絶縁性
液体中に(a)着色剤、(b)電荷制御剤、(c)ポリエチレ
ン、ポリプロピレン、エレン共重合体、プロピレ
ン共重合体の１種または２種以上、及び(d)炭化水
素溶剤可溶性の１，３−ペンタジエンを含有する
炭化水素樹脂等を添加し、ボールミル、サンドミ
ル、コロイドミル超音波分散法等を用いて製造す
ることができる。
本発明に用いられる印刷原版は、支持体上に光
導電性層を有しており、該光導電性層は光導電体
を含有する層である。該光導電体としては、無機
光導電体、有機光導電体、光導電性有機顔料の１
種以上が使用される。前記光導電体は、天然また
は合成高分子物質を含む溶液中に溶解あるいは懸
濁させて、公知の方法で導電性支持体に設けて印
刷原版が製造される。こうして得られた印刷原版
を通常の電子写真法により、帯電後、露光し、本
発明に係る液体現像剤にて現像し、定着を行なつ
た後、非画像部（トナーの付着していない部分）
を溶剤にてエツチングして印刷版を製造する。上
記の製版工程において露光用光源としては、キセ
ノンランプ、ハロゲンランプ、蛍光灯、タングス
テンランプあるいは半導体レーザー、Arイオン
He−Ne等のレーザー光等が使用できる。上記定
着は、画像部におけるトナー粒子を光導電性層に
密着あるいは融着させて非画像部を溶出するエツ
チング用溶剤の浸透を防げる操作であり、その方
法としては、光導電性層に残像する電気絶縁性液
体をスクイーズローラ、室温の風あるいは温風に
て除去する方法によること、または上記の如き除
去と同時にまたは除去後加圧あるいは加熱による
こと等のいずれの方法でもよい。又、エツチング
用の溶剤としては光導電性層を構成する光導電体
又はバインダー樹脂の種類によつて適宜選択され
る。
本発明に係る液体現像剤を使用した場合、エツ
チング工程において画像部（トナーの付着してい
る部分）はエツチング用溶剤に対し、極めて強い
抵抗力を示し、画像部が溶出することはない。ま
た得られた印刷版は高解像力を有し、画像再現性
が良好である。
〔実施例〕
次に本発明の実施例について詳述するが、本発
明の実施の態様がこれにより限定されるものでは
ない。
実施例 １
ε型銅フタロシアニン １重量部
ｍ−クレゾールフエノールノボラツク樹脂
６重量部
エチレングリコールモノエチルエーテル
24重量部
上記組成物を常温にて超音波分散器にかけ、分
散均質化した。
得られた感光液を粗面化したアルミニウム板上
に膜厚が5μになるように塗布し、印刷原版を製
造した。
カーボンブラツク １重量部
エチレン−エチルアクリレート（72：28）共重
合体 ３重量部
クイントンＣ−200（日本ゼオン社製） １重量部
ナフテン酸マンガン 0.05重量部
アイソパーＧ（エツソ石油化学社製、リン酸エス
テル系界面活性剤） 40重量部
上記混合物を磁製ボールミルにて24時間分散
し、この分散液１重量部を10重量部のアイソパー
Ｇ中に撹拌しながら添加し、液体現像剤を製造し
た。
次いで、前記印刷原版をコロナ帯電装置にて負
に帯電し、原稿に反射ポジテイヴ、光源に蛍光灯
20W、10本を用い、レンズ系を通して像露光を行
なつて静電潜像を得、前記液体現像剤にて現像を
行なつた。加熱定着後、ケイ酸ソーダ及びカセイ
ソーダからなるアルカリ水溶液中に浸漬し、非画
像部（トナーの付着していない部分）の光導電製
層をエツチングして、印刷版を製造したところ、
後記表１に示す如く解像力のすぐれた印刷版が得
れらた。
実施例 ２
カーボンブラツク １重量部
ポリエチレン（分子量1500） ３重量部
クイントンＣ−200 ３重量部
Gafac RB−410（東邦化学製、リン酸エステル
系界面活性剤） 0.05重量部
アイソパーＧ 40重量部
上記混合物を用いて実施例１と同様にして液体
現像剤を製造した。
次いで、実施例１で得られた印刷原版を用い、
コロナ帯電装置にて正に帯電した他は実施例１と
全く同様に処理して、印刷版を製造したところ、
後記表１に示す如く解像力のすぐれた印刷版が得
られた。
実施例 ３
フタロシアニンブルー １重量部
エチレン−酢酸ビニル（72：28）共重合体
４重量部
クイントンＤ−200（日本ゼオン社製） ２重量部
アイソパーＧ 40重量部
上記混合物を磁製ボールミルにて24時間分散
し、この分散液１重量部をナフテン酸鉄0.01％
（重量）を含有するアイソパーG10重量部中に撹
拌しながら添加し、液体現像剤を製造した。
次いで、実施例１で得られた印刷原版を用いて
コロナ帯電装置にて正に帯電させた後、原稿にマ
イクロフイルムを用いて、市販の写真用引伸機を
用いて16倍（面積比）に拡大撮影した後、後記現
像剤を用いて現像を行なつた後ドライヤー（室温
風）にて乾燥し、実施例１と同様に処理したとこ
ろ、後記表１に示す如く解像力のすぐれた印刷版
が得られた。
実施例 ４
２，５−ビス−［4′−ジエチルアミノフエニル
−（1′）］−１，３，４−オキサジアゾール
10重量部
スチレン−無水マレイン酸共重合体（スチレ
ン：無水マレイン酸＝１：１） 10重量部
ローダミンＢ 0.005重量部
エチレングリコールモノエチルエーテル
40重量部
上記組成物を粗面化したアルミニウム板上に膜
厚が8μになるように塗布し、印刷原版を製造し
た。
カーボンブラツク １重量部
ポリプロピレン ３重量部
クイントンＣ−100（日本ゼオン社製） １重量部
ph・slex Ａ−12（堺化学社製、リン酸エステル
系面活性剤） 0.05重量部
アイソパーＧ 40重量部
一方、上記混合物を磁製ボールミルにて24時間
分散し、この分散液１重量部を15重量部のアイソ
パーＧ中に撹拌しながら添加し、液体現像剤を製
造した。
次いで前記の印刷原版を用い、実施例２と同様
に製版処理したところ、後記表１に示す如く解像
力のすぐれた印刷版が得られた。
以下に本発明の効果を明確にするため、比較実
験を行なつた結果と併せて、その結果を表１に示
す。
[Industrial Application Field] The present invention relates to a liquid developer used in a plate-making method for creating a printing plate. [Prior Art] Conventionally, lithographic printing plates have been used in which a photosensitive resin is coated on a printing substrate, but the sensitivity is extremely low compared to silver salt-based photosensitive materials or electrophotographic photosensitive materials. For this reason, in order to expose a printing plate using a photosensitive resin, a silver salt-based photosensitive material produced by photolithography is brought into close contact with the printing plate and exposed. In recent years, with the aim of saving labor and resources, the photolithography process that produces silver salt-based so-called lithium film (a silver halide photographic light-sensitive material developed with lithium developer) has become increasingly popular, with the aim of saving labor and resources. Plate-making methods for producing printing plates have emerged. 2. Description of the Related Art An electrophotographic engraving method for producing a printing plate by directly photographing a document using an electrophotographic method is well known. For example, Special Publication No. 37-17162, No. 38-6961
No. 39-12703, etc., a photoconductive layer is provided on a roughened aluminum plate, and a toner image is formed by charging, exposing, and developing using an ordinary electrophotographic method, and a non-image is formed. A method is described in which a printing plate is prepared by dissolving the photoconductive layer (the area to which no toner is attached) with an alkaline solution. Furthermore, Japanese Patent Application Laid-open No. 54-144203 discloses that a toner image formed on a zinc oxide photoreceptor by an electrophotographic method is transferred to a transfer printing plate having an epoxy resin layer on an aluminum plate, and after heat fixing, A method is described in which a lithographic printing plate is prepared by dissolving the epoxy resin layer in the non-image area with a solvent. [Problems to be Solved by the Invention] These conventional techniques have a disadvantage in that the resolution of the image is poor because a dry developer is used when obtaining a toner image by electrophotography. Generally, when obtaining a toner image by electrophotography, a wet development method has much better resolution and excellent image reproducibility than a dry development method. However, there is still no known wet developer that is useful in electrophotographic engraving methods, which include a step of dissolving and removing non-image areas after forming a toner image by electrophotography (hereinafter referred to as etching). . That is, when a toner image is formed by wet development with a liquid developer and then etched to produce a printing plate, the image area (the area to which the toner is attached) is also easily eluted, and the etching resistance of the image area is affected. It had a few shortcomings. An object of the present invention is to provide a liquid developer used in a plate-making method for obtaining a printing plate having high resolution using an electrophotographic method. Another object of the present invention is to provide a liquid developer with excellent etching resistance in an electrophotographic process including an etching step. Still another object of the present invention is to provide a liquid developer with excellent dispersion stability. [Means for Solving the Problems] The above-mentioned object of the present invention is to form an electrical latent image on a printing original plate having a photoconductive layer on a support using an electrophotographic method, and after image exposure, to develop the printing plate with a developer. A developer used in a plate-making method in which a printing plate is created by developing a toner image and, after fixing, etching the photoconductive layer in the non-image area with a solvent. a) a colorant, (b) a charge control agent, and (c) one or more of polyethylene, polypropylene, ethylene copolymer, and propylene copolymer, and (d)
This is achieved by a liquid developer characterized in that it contains a hydrocarbon resin containing 1,3-pentadiene soluble in a hydrocarbon solvent. The present invention will be explained in detail below. Generally, a liquid developer for electrophotography consists of a carrier liquid consisting of a colorant, a coating agent, a charge control agent, and an electrically insulating liquid, and various polymer compounds are used as the coating agent. For example, alkyd resins, acrylic resins, styrene resins, vinyl chloride resins, polyamide resins, rubber resins, cyclized rubbers, rosin derivatives, and liquid developers for electrophotography, but butadiene resins are also known. There is (Japanese Patent Application Publication No. 1973)
75440, Japanese Patent Publication No. 50-25341), when a developer containing these resins is applied to electrophotographic engraving including an etching step, it has the disadvantage of poor etching resistance or low resolution. Also, Special Publication No. 50-33777, No. 51-29653, No. 51-47338
Liquid developers containing polyethylene, ethylene-vinyl acetate copolymer, polypropylene, etc. have been proposed in Japanese Patent Laid-open No. 52-3582 and Japanese Patent Application Laid-open No. 48-49445. However, these techniques are merely aimed at improving the transferability when transferring a toner image to a transfer paper such as paper in the field of ordinary copying. The liquid developer according to the present invention contains (a) a coloring agent, (b) a charge control agent, and (c) one or two of polyethylene, polypropylene, an ethylene copolymer, and a propylene copolymer in an electrically insulating liquid. and (d) a hydrocarbon resin containing 1,3-pentadiene soluble in a hydrocarbon solvent. The ethylene copolymer and propylene copolymer used in the present invention are copolymers of ethylene, propylene, and one or more other monomers, such as methyl acrylate, ethyl acrylate, Examples include ethyl methacrylate, vinyl acetate, vinyl chloride, and tetrafluoroethylene. The total amount of one or more of polyethylene, polypropylene, ethylene copolymer, and propylene copolymer added is based on 100 parts by weight of the electrically insulating liquid.
The amount is 0.01 to 5 parts by weight, preferably 0.1 to 2 parts by weight. By using these resins, etching resistance is improved in electrophotographic process including an etching process, and a printing plate with excellent resolution can be obtained. As the hydrocarbon resin containing 1,3-pentadiene, for example, the resin described in Japanese Patent Publication No. 50-29951 is used. Commercially available products include Quinton C-100, C-200, D-200, U-200 (and above,
Both are manufactured by Nippon Zeon Co., Ltd.). The amount of these resins added is based on 100 parts by weight of electrically insulating liquid.
The amount is 0.01 to 5 parts by weight, preferably 0.1 to 2 parts by weight. By adding these resins, the dispersibility and dispersion stability of toner particles can be significantly improved. Examples of charge control agents include lecithin, naphthenic acid metal salts, alkylbenzene sulfonates, dialkylnaphthalene styrene salts, mono- or di-alkyl sulfosuccinates, dialkyl phosphate salts, linseed oil, soybean oil, alkyd resins, etc. There is. Although the amount to be added cannot be uniquely determined as it varies depending on the type, it is preferably selected appropriately so that the resistance of the liquid developer is, for example, 10 9 Ωcm or more. Further, as the coloring agent, pigments, dyes, etc. can be used, and the coloring agent is not particularly limited. Examples include carbon black, copper phthalocyanine, phthalocyanine green, malachite green, rhodamine, Victoria blue, and oil black. The amount of coloring agent used is not limited, but it is 0.01 parts by weight for 100 parts by weight of electrically insulating liquid.
~1.00 parts by weight, preferably 0.01-0.1 parts by weight. Also, as an electrically insulating liquid, the electrical resistance value is
Aliphatic hydrocarbons, aromatic hydrocarbons of 10 9 Ωcm or more,
Electrically insulating liquids such as halogenated hydrocarbons are used. Examples include n-hexane, n-pentane, chlorinated paraffin, isoparaffin, kerosene, and the like. Commercially available products include, for example, Isopar G (manufactured by Etsuso Petrochemicals). Furthermore, other natural or synthetic polymer compounds can be added to the liquid developer according to the present invention, if necessary. The liquid developer according to the present invention includes, for example, one or two of (a) a coloring agent, (b) a charge control agent, and (c) polyethylene, polypropylene, an ethylene copolymer, or a propylene copolymer in an electrically insulating liquid. It can be produced using a ball mill, a sand mill, a colloid mill ultrasonic dispersion method, etc. by adding (d) a hydrocarbon resin containing 1,3-pentadiene soluble in a hydrocarbon solvent, and the like. The printing original plate used in the present invention has a photoconductive layer on a support, and the photoconductive layer is a layer containing a photoconductor. The photoconductor may include one of an inorganic photoconductor, an organic photoconductor, and a photoconductive organic pigment.
More than one species is used. The photoconductor is dissolved or suspended in a solution containing a natural or synthetic polymeric substance, and the photoconductor is provided on a conductive support by a known method to produce a printing original plate. The printing original plate obtained in this manner is charged and exposed to light using a normal electrophotographic method, developed with the liquid developer according to the present invention, and fixed. )
A printing plate is manufactured by etching with a solvent. In the above plate-making process, the light sources for exposure include xenon lamps, halogen lamps, fluorescent lamps, tungsten lamps, semiconductor lasers, and Ar ion lamps.
Laser light such as He-Ne can be used. The above-mentioned fixing is an operation that causes the toner particles in the image area to adhere or fuse to the photoconductive layer, thereby preventing penetration of the etching solvent that dissolves the non-image area. The electrically insulating liquid may be removed using a squeeze roller, air at room temperature or hot air, or may be removed simultaneously with or after removal as described above by applying pressure or heating. The etching solvent is appropriately selected depending on the type of photoconductor or binder resin constituting the photoconductive layer. When the liquid developer according to the present invention is used, the image area (the area to which the toner is attached) exhibits extremely strong resistance to the etching solvent during the etching process, and the image area will not be eluted. Furthermore, the obtained printing plate has high resolution and good image reproducibility. [Examples] Next, Examples of the present invention will be described in detail, but the embodiments of the present invention are not limited thereto. Example 1 ε-type copper phthalocyanine 1 part by weight m-cresol phenol novolak resin
6 parts by weight ethylene glycol monoethyl ether
24 parts by weight The above composition was applied to an ultrasonic disperser at room temperature to homogenize the dispersion. The obtained photosensitive liquid was applied onto a roughened aluminum plate to a film thickness of 5 μm to produce a printing original plate. Carbon black 1 part by weight Ethylene-ethyl acrylate (72:28) copolymer 3 parts by weight Quinton C-200 (manufactured by Nippon Zeon Co., Ltd.) 1 part by weight Manganese naphthenate 0.05 parts by weight Isopar G (manufactured by Etsuo Petrochemical Co., Ltd., phosphoric acid Ester surfactant) 40 parts by weight The above mixture was dispersed in a porcelain ball mill for 24 hours, and 1 part by weight of this dispersion was added to 10 parts by weight of Isopar G with stirring to produce a liquid developer. Next, the original printing plate is negatively charged with a corona charging device, a positive reflection is applied to the original, and a fluorescent lamp is used as a light source.
An electrostatic latent image was obtained by imagewise exposure through a lens system using 20W, 10 lines, and developed with the liquid developer. After heating and fixing, the printing plate was manufactured by immersing it in an alkaline aqueous solution consisting of sodium silicate and caustic soda and etching the photoconductive layer in the non-image area (the area to which no toner was attached).
As shown in Table 1 below, a printing plate with excellent resolution was obtained. Example 2 Carbon black 1 part by weight Polyethylene (molecular weight 1500) 3 parts by weight Quinton C-200 3 parts by weight Gafac RB-410 (manufactured by Toho Chemical, phosphate ester surfactant) 0.05 parts by weight Isopar G 40 parts by weight The above mixture A liquid developer was produced in the same manner as in Example 1 using the following. Next, using the printing original plate obtained in Example 1,
A printing plate was produced in the same manner as in Example 1 except that it was positively charged with a corona charging device.
As shown in Table 1 below, a printing plate with excellent resolution was obtained. Example 3 Phthalocyanine blue 1 part by weight ethylene-vinyl acetate (72:28) copolymer
4 parts by weight Quinton D-200 (Nippon Zeon Co., Ltd.) 2 parts by weight Isopar G 40 parts by weight The above mixture was dispersed in a porcelain ball mill for 24 hours, and 1 part by weight of this dispersion was mixed with 0.01% iron naphthenate.
(by weight) was added to 10 parts by weight of Isopar G containing (weight) to produce a liquid developer. Next, the original printing plate obtained in Example 1 was positively charged with a corona charging device, and then the manuscript was magnified 16 times (area ratio) using a microfilm and a commercially available photographic enlarger. After taking an enlarged photo, it was developed using the developer described below, dried in a dryer (room temperature air), and treated in the same manner as in Example 1. As a result, a printing plate with excellent resolution was obtained as shown in Table 1 below. Obtained. Example 4 2,5-bis-[4'-diethylaminophenyl-(1')]-1,3,4-oxadiazole
10 parts by weight Styrene-maleic anhydride copolymer (styrene:maleic anhydride = 1:1) 10 parts by weight Rhodamine B 0.005 parts by weight ethylene glycol monoethyl ether
40 parts by weight The above composition was applied onto a roughened aluminum plate to a film thickness of 8 μm to produce a printing original plate. Carbon black 1 part by weight Polypropylene 3 parts by weight Quinton C-100 (manufactured by Nippon Zeon) 1 part by weight pH・Slex A-12 (manufactured by Sakai Chemical Co., Ltd., phosphate ester surfactant) 0.05 parts by weight Isopar G 40 parts by weight On the other hand, the above mixture was dispersed in a porcelain ball mill for 24 hours, and 1 part by weight of this dispersion was added to 15 parts by weight of Isopar G with stirring to produce a liquid developer. Next, using the above printing original plate, plate making was carried out in the same manner as in Example 2, and a printing plate with excellent resolution as shown in Table 1 below was obtained. In order to clarify the effects of the present invention, the results are shown in Table 1 along with the results of a comparative experiment.
【表】
［実験条件］
定着：100℃のオーブン中にて１分間加熱処理。
エツチング：SDP−１［コニカ社製PS版用現像
液］の７倍希釈液を使用。
分散安定性：液体現像液を２倍希釈して１週間静
置。
但し、比較例１〜４は以下に示す通りである。
比較例 １
ポリスチレン系の粉体トナーを使用した他は実
施例１と全く同様にして印刷版を得た。
比較例 ２
カーボンブラツク １重量部
クマロン樹脂 ３重量部
Gafac RB−410 0.05重量部
アイソパーＧ 40重量部
上記混合物を用いた以外は実施例２と同様にし
て液体現像剤を製造し、次いで実施例２と同様に
製版処理した。
比較例 ３
フタロシアニンブルー １重量部
エチレン−酢酸ビニル（72：28）共重合体
４重量部
ロジン変性マレイン酸樹脂 ２重量部
アイソパーＧ 40重量部
上記混合物を用いた以外は実施例３と同様に行
なつて、液体現像剤を製造し、次いで実施例３と
同様にして製版処理した。
比較例 ４
カーボンブラツク １重量部
ポリプロピレン ３重量部
環化ゴム20％（重量）トルエン溶液 ５重量部
ラウリルベンゼンスルホン酸ソーダ 0.05重量部
アイソパーＧ 40重量部
上記混合物を用いた以外は実施例４と全く同様
に行なつて液体現像剤を製造し、次いで実施例４
と同様に製版処理した。[Table] [Experimental conditions] Fixing: Heat treatment in an oven at 100°C for 1 minute. Etching: Use a 7-fold dilution of SDP-1 [Konica Corporation PS plate developer]. Dispersion stability: Dilute the liquid developer 2 times and leave it for one week. However, Comparative Examples 1 to 4 are as shown below. Comparative Example 1 A printing plate was obtained in the same manner as in Example 1 except that a polystyrene powder toner was used. Comparative Example 2 Carbon black 1 part by weight Coumaron resin 3 parts by weight Gafac RB-410 0.05 parts by weight Isopar G 40 parts by weight A liquid developer was produced in the same manner as in Example 2 except that the above mixture was used. The plate-making process was carried out in the same manner. Comparative Example 3 Phthalocyanine Blue 1 part by weight ethylene-vinyl acetate (72:28) copolymer
4 parts by weight Rosin-modified maleic acid resin 2 parts by weight Isopar G 40 parts by weight A liquid developer was produced in the same manner as in Example 3, except that the above mixture was used, and then plate making was performed in the same manner as in Example 3. did. Comparative Example 4 Carbon black 1 part by weight Polypropylene 3 parts by weight Cyclized rubber 20% (by weight) Toluene solution 5 parts by weight Sodium laurylbenzenesulfonate 0.05 parts by weight Isopar G 40 parts Same as Example 4 except that the above mixture was used. A liquid developer was produced in the same manner, and then Example 4
The plate-making process was carried out in the same manner.
Claims (1)
電子写真方式にて電気的潜像を形成させ、画像露
光後、現像剤で現像し、トナー画像を形成させ、
定着後、非画像部の光導電性層を溶剤でエツチン
グして、印刷版を作成する製版方法に用いられる
現像剤であつて、電気絶縁性液体中に(a)着色剤、
(b)電荷制御剤、及び(c)ポリエチレン、ポリプロピ
レン、エチレン共重合体、プロピレン共重合体の
１種または２種以上、及び(d)炭化水素溶剤に可溶
性の１，３−ペンタジエンを含有する炭化水素樹
脂を含有することを特徴とする液体現像剤。1 A printing original plate having a photoconductive layer on a support,
An electrical latent image is formed using an electrophotographic method, and after the image is exposed, it is developed with a developer to form a toner image.
A developer used in a plate-making method in which a printing plate is created by etching the photoconductive layer in the non-image area with a solvent after fixing, the developer containing (a) a colorant in an electrically insulating liquid;
(b) a charge control agent; (c) one or more of polyethylene, polypropylene, ethylene copolymer, and propylene copolymer; and (d) 1,3-pentadiene soluble in a hydrocarbon solvent. A liquid developer characterized by containing a hydrocarbon resin.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56074108A JPS57210347A (en) | 1981-05-19 | 1981-05-19 | Electrophotographic liquid developer and developing method using it |
| US06/377,585 US4425418A (en) | 1981-05-19 | 1982-05-12 | Liquid developers for electrophotography and developing method using the same |
| DE3219035A DE3219035A1 (en) | 1981-05-19 | 1982-05-19 | ELECTROPHOTOGRAPHIC SUSPENSION DEVELOPERS AND USE THEREOF IN THE PRODUCTION OF PRINTING FORMS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56074108A JPS57210347A (en) | 1981-05-19 | 1981-05-19 | Electrophotographic liquid developer and developing method using it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57210347A JPS57210347A (en) | 1982-12-23 |
| JPH0141984B2 true JPH0141984B2 (en) | 1989-09-08 |
Family
ID=13537661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56074108A Granted JPS57210347A (en) | 1981-05-19 | 1981-05-19 | Electrophotographic liquid developer and developing method using it |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57210347A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5987463A (en) * | 1982-11-10 | 1984-05-21 | Dainippon Printing Co Ltd | Electrophotographic wet type toner |
| JPS6136760A (en) * | 1984-07-30 | 1986-02-21 | Konishiroku Photo Ind Co Ltd | Production of liquid developer for electrophotography and printing plate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5025341A (en) * | 1973-07-04 | 1975-03-18 | ||
| JPS5075440A (en) * | 1973-11-05 | 1975-06-20 |
-
1981
- 1981-05-19 JP JP56074108A patent/JPS57210347A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5025341A (en) * | 1973-07-04 | 1975-03-18 | ||
| JPS5075440A (en) * | 1973-11-05 | 1975-06-20 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57210347A (en) | 1982-12-23 |
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