JPH0411862B2 - - Google Patents
Info
- Publication number
- JPH0411862B2 JPH0411862B2 JP56056981A JP5698181A JPH0411862B2 JP H0411862 B2 JPH0411862 B2 JP H0411862B2 JP 56056981 A JP56056981 A JP 56056981A JP 5698181 A JP5698181 A JP 5698181A JP H0411862 B2 JPH0411862 B2 JP H0411862B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- clay
- electrostatic
- color
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004927 clay Substances 0.000 claims description 28
- 239000004020 conductor Substances 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 150000002500 ions Chemical class 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 description 19
- 238000004040 coloring Methods 0.000 description 18
- 239000000975 dye Substances 0.000 description 11
- 239000011230 binding agent Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000003490 calendering Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 108020003175 receptors Proteins 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 239000004816 latex Substances 0.000 description 3
- 229920000126 latex Polymers 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004383 yellowing Methods 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- -1 Ta 2 O 5 Inorganic materials 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- WPYVAWXEWQSOGY-UHFFFAOYSA-N indium antimonide Chemical compound [Sb]#[In] WPYVAWXEWQSOGY-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 108091008695 photoreceptors Proteins 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-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
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910017115 AlSb Inorganic materials 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 1
- 229910021595 Copper(I) iodide Inorganic materials 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910000673 Indium arsenide Inorganic materials 0.000 description 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 1
- 229910019018 Mg 2 Si Inorganic materials 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 239000004368 Modified starch Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 description 1
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 150000001218 Thorium Chemical class 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 229910007657 ZnSb Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 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
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 1
- AUYOHNUMSAGWQZ-UHFFFAOYSA-L dihydroxy(oxo)tin Chemical compound O[Sn](O)=O AUYOHNUMSAGWQZ-UHFFFAOYSA-L 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N lead(II) oxide Inorganic materials [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 239000011806 microball Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000371 poly(diallyldimethylammonium chloride) polymer Polymers 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 229940006186 sodium polystyrene sulfonate Drugs 0.000 description 1
- IJRHDFLHUATAOS-DPMBMXLASA-M sodium ricinoleate Chemical compound [Na+].CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O IJRHDFLHUATAOS-DPMBMXLASA-M 0.000 description 1
- 239000008279 sol Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 239000010457 zeolite 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
- G03G7/00—Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G7/00—Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
- G03G7/0086—Back layers for image-receiving members; Strippable backsheets
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Photoreceptors In Electrophotography (AREA)
Description
本発明は、電子写真技術を応用して1回露光、
1回現像でカラー画像を得るワンシヨツトカラー
画像形成方法に特に有用な像受容体に関する。具
体的には、荷電した光導電性感光体に、色分解機
能を有し、かつ顕色剤と反応して発色する無色昇
華性染料を含む光に透明な粒子を静電付着させ、
像露光後静電引力が弱化もしくは除去された粒子
を機械的もしくは電気的に前記感光体から除去し
て粒子像を得、前記粒子像を顕色剤を含む像受容
体に静電転写したのち、加熱して粒子に含まれる
無色昇華性染料を昇華させ、像受容体上に前記顕
色剤と染料とを反応発色させたのち、粒子を像受
容体から除去して発色像を得る方法に適した像受
容体に関する。さらに具体的には、顕色剤として
活性クレーを含む層の上に、無色昇華性染料の分
子を透過しうる誘電層を重畳した静電形クレー紙
に関する。
従来、基紙上に活性クレーを含み、かつ表面固
有抵抗が109Ω以下の発色層を設け、前記発色層
上に無色昇華性染料の分子を透過しうる誘電層を
重畳した静電形クレー紙が提案されている。(例
えば、特開昭56−16143号公報)。しかし基紙とし
て導電処理しない基紙あるいは高分子電解質で導
電処理した基紙を用いるため、低湿度雰囲気下で
は安定した画像が得られない欠点があつた。
従つて、本発明の目的はかかる従来の欠点を克
服した静電形クレー紙を提供することである。す
なわち、本発明の目的は低湿度領域から高湿度領
域まで安定して画像記録が可能な静電形クレー紙
を提供することである。
また、本発明の他の目的は加熱発色後、粒子の
除去が容易な静電形クレー紙を提供することにあ
る。さらに本発明の他の目的は、濃度の高い鮮明
な発色像を得ることのできる静電形クレー紙を提
供することである。
さらに、本発明の他の目的は、粒子の転写効率
が良く、しかも解像力が優れ、にじみのない鮮明
な画像を得ることのできる静電形クレー紙を提供
することである。
本発明による静電形クレー紙は基紙の片面に活
性クレーを含む発色層を設け、前記発色層上に剥
離剤と白色の無機微粉末を含み、かつ無色昇華性
染料の分子を透過しうる誘電層を重畳し、さらに
前記基紙の反対面にイオン伝導型物質と電子伝導
型物質を含み、かつ表面固有抵抗が109Ω以下の
導電層を設けたことを特徴とする。
つぎに、本発明による静電形クレー紙の構成を
図面に基づき更に詳しく説明する。図は本発明に
よる静電形クレー紙の断面概略図を示すものであ
り、基紙1の片面に活性クレー2を含む発色層3
を設け、さらに発色層上に誘電層4を重畳し、か
つ基紙1の反対面にイオン伝導型物質5と電子伝
導型物質6を含む導電層7を設けたものである。
発色層3は活性クレーを主成分とし、他の白色の
無機微粉末8を樹脂結着剤(以下単に結着剤とい
う)中に分散した層である。また前記微粉末は加
熱による発色層の黄変防止と耐熱性の向上と発色
層のにじみ防止と更に発色助剤として有効なもの
が望ましく、その代表的なものとしては、炭酸カ
ルシウム、酸化ケイ素がある。結着剤としては、
結着力が強く、しかも熱黄変の少ないものが望ま
しく、例えばスチレン−ブタジエン共重合体、ア
クリル系樹脂、ポリ酢酸ビニルなどが好ましい、
特に前記樹脂のエマルジヨンは、活性クレーを隠
ぺいし難いため発色濃度を高くする点で好まし
い。
以上説明した発色層を構成する諸材料の割合
は、活性クレー100重量部に対して、無機微粉末
は発色層の黄変防止と耐熱性の向上のため20〜80
重量部、結着剤は10〜30重量部の範囲で用いるの
が好しい。また前記諸材料を分散混合する際必要
に応じて界面活性剤等の分散剤を適宜使用しても
良い。また塗工量は充分な発色濃度を得るには5
〜10g/m2が好ましい。さらに塗工した発色層は
表面固有抵抗を均一にするためにカレンダー処理
することが好ましい。さらに基紙は特に限定する
ことはないが、塗工面を均一にするために凹凸の
少ない平滑度の良い、しかも液のはじきのない上
質紙が好ましい。
誘電層4は、定着後の粒子を粘着させないため
の剥離剤9と無色昇華性染料の昇華したガスを透
過し易くするための白色の無機微粉末と結着剤か
ら構成されている。
剥離剤9としては、抵抗が高く、透明または白
色のものが望ましく、その代表的なものとして、
ポリエチレン、シリコーン樹脂が好ましい。特に
これらの材料エマルジヨンが結着剤との相溶性に
優れる点点で好ましい。白色の無機微粉末として
は発色助剤として有効な酸化ケイ素が好ましい。
結着剤としては抵抗が高く、透明なものが好まし
くかつ発色層との結着性がよく、折り曲げ強度の
強い例えばスチレン−ブタジエン共重合体、アク
リル系樹脂、ポリ酢酸ビニルなどが好ましい。特
にこれら樹脂のエマルジヨンが透気性に優れる点
で好ましい。
以上説明した誘電層を構成する諸材料の割合
は、剥離剤100重量部に対して、無機微粉末は無
色昇華性染料の分子を十分に透過させるために20
〜60重量部、また結着剤は誘電層の被膜強度を強
くするために60〜150重量部が好ましい。また前
記諸材料を分散混合する際、必要に応じて界面活
性剤や増粘剤の分散剤を適宜使用しても良い。ま
た塗工量は無色昇華性染料の昇華する経路を短く
し発色濃度を高め、さらには転写効率を向上する
ために、抵抗が高く膜厚の薄いものが望ましく、
2〜5g/m2が好ましい。
導電層7は、静電転写の際の印加電圧による粒
子の飛散を防ぐ電極となるために、低湿度雰囲気
下でも表面固有抵抗109Ω以下であり、かつイオ
ン伝導性物質と電子伝導性物質を含む層である。
イオン伝導性物質としては、例えばLicl,
Nacl,Kcl,Mgcl2,Cacl2等の無機塩、ポリス
チレンスルフオン酸ソーダ、ポリアクリル酸ソー
ダ、ポリビニルベンジルトリメチルアンモニウム
クロライド、ポリジアリルジメチルアンモニウム
クロライド、ポリビニルトリメチルアンモニウム
クロライド等のアニオン又はカチオン性の導電性
樹脂、アルミナゾル、シリカゲル、メタスズ酸ゾ
ル、ゼオライト等の導電性顔料およびステアリル
トリメチルアンモニウムクロライド、ラウリルト
リメチルアンモニウムクロライド、リシノレイン
酸硫酸エステルソーダ、アルキルベンゼンスルフ
オン酸ソーダ等の帯電防止剤などが挙げられる。
電子伝導性物質としては、例えばAgCl,AgI,
CuCl,CuI等のハロゲン化物、TiO2,Tl2O,
Al2O3,Ta2O5,SnO2,PbO,ZnO等の酸化物、
ZnS等の硫化物、InSb,Mg2Si,ZnSb,AlSb,
InAs,InSb,AlP,GaP,InP等の金属間化合
物、およびカーボンブラツク等が挙げられるが、
本発明においては特に少量の他種金属例えばアル
ミニウム、銅、スズ等をドーピングすることある
いは他種金属の導電膜を表面に形成することによ
り得られた、150Kg/cm2の圧力下で10-2〜103Ω・
cmの比抵抗を有する電子伝導性粉末が好ましく、
なかでも上記特定の比抵抗を有する酸化亜鉛粉
末、酸化チタン粉末が最も好ましい。
以上説明した導電層を構成する諸材料の割合
は、電子伝導性物質100重量部に対して、イオン
伝導性物質5〜100重量部の範囲で用いるのが好
ましい。また必要に応じて、ポリビニルアルコー
ル、メチルセルロース、ヒドロキシエチルセルロ
ース、澱粉、変性澱粉、スチレン−ブタジエン共
重合体系ラテツクス、酢ビ系ラテツクス、アクリ
ル酸系ラテツクス、イソブテン無水マレイン酸共
重合体塩、スチレン−無水マレイン酸共重合体
塩、ポリアクリル塩ソーダ等の結着剤及びクレ
ー、カオリン、水酸化アルミニウム、酸化アルミ
ニウム、炭酸カルシウム、硫酸バリウム、ポリス
チレンマイクロボール等の無機又は有機顔料、さ
らには消泡剤、分散剤、染料、紫外線吸収剤など
を適宜使用しても良い。また塗工量は表面固有抵
抗を低湿度雰囲気下でも109Ω以下にするには2
〜10g/m2が好ましい。さらに塗工した導電層は
表面抵抗を均一にするには、カレンダー処理する
ことが好ましい。
以下、本発明を実施例によりさらに詳細に説明
する。
実施例 1
まず、次の処方により、液(1),(2),(3)を用意し
た。
The present invention applies electrophotographic technology to perform one-time exposure,
The present invention relates to an image receptor particularly useful in one-shot color imaging processes that produce color images in a single development. Specifically, light-transparent particles that have a color separation function and contain a colorless sublimable dye that reacts with a color developer to develop color are electrostatically attached to a charged photoconductive photoreceptor.
After image exposure, particles whose electrostatic attraction has been weakened or removed are mechanically or electrically removed from the photoreceptor to obtain a particle image, and the particle image is electrostatically transferred to an image receptor containing a color developer. , a method in which the colorless sublimable dye contained in the particles is sublimated by heating, the developer and the dye are reacted to form a color on the image receptor, and then the particles are removed from the image receptor to obtain a colored image. Regarding suitable image receptors. More specifically, the present invention relates to an electrostatic clay paper in which a dielectric layer through which molecules of a colorless sublimable dye can pass is superimposed on a layer containing activated clay as a color developer. Conventionally, electrostatic clay paper has a coloring layer containing activated clay and having a surface resistivity of 10 9 Ω or less on a base paper, and a dielectric layer that allows colorless sublimable dye molecules to pass through is superimposed on the coloring layer. is proposed. (For example, Japanese Patent Application Laid-Open No. 16143/1983). However, since a base paper that is not conductively treated or a base paper that is conductively treated with a polymer electrolyte is used as the base paper, there is a drawback that stable images cannot be obtained in a low humidity atmosphere. Therefore, it is an object of the present invention to provide an electrostatic clay paper which overcomes such conventional drawbacks. That is, an object of the present invention is to provide an electrostatic clay paper that is capable of stably recording images from a low humidity region to a high humidity region. Another object of the present invention is to provide electrostatic clay paper from which particles can be easily removed after color development by heating. Still another object of the present invention is to provide an electrostatic clay paper capable of producing clear colored images with high density. Furthermore, another object of the present invention is to provide electrostatic clay paper that has good particle transfer efficiency, excellent resolution, and is capable of producing clear images without blur. The electrostatic clay paper according to the present invention has a coloring layer containing activated clay on one side of the base paper, contains a release agent and white inorganic fine powder on the coloring layer, and is permeable to colorless sublimable dye molecules. It is characterized in that dielectric layers are superimposed, and a conductive layer containing an ion-conducting material and an electron-conducting material and having a surface resistivity of 10 9 Ω or less is further provided on the opposite side of the base paper. Next, the structure of the electrostatic clay paper according to the present invention will be explained in more detail based on the drawings. The figure shows a schematic cross-sectional view of an electrostatic clay paper according to the present invention, in which a coloring layer 3 containing an activated clay 2 is formed on one side of a base paper 1.
Further, a dielectric layer 4 is superimposed on the coloring layer, and a conductive layer 7 containing an ion conductive material 5 and an electron conductive material 6 is provided on the opposite side of the base paper 1.
The coloring layer 3 is a layer containing activated clay as a main component and other white inorganic fine powder 8 dispersed in a resin binder (hereinafter simply referred to as binder). In addition, the fine powder is preferably one that is effective in preventing yellowing of the coloring layer due to heating, improving heat resistance, preventing bleeding of the coloring layer, and as a coloring aid. Typical examples include calcium carbonate and silicon oxide. be. As a binder,
It is desirable to have a strong binding force and little thermal yellowing, such as styrene-butadiene copolymer, acrylic resin, polyvinyl acetate, etc.
In particular, emulsions of the above resins are preferred in that they do not easily hide the activated clay and therefore increase the color density. The ratio of the materials constituting the coloring layer explained above is 20 to 80 parts by weight of inorganic fine powder to 100 parts by weight of activated clay to prevent yellowing of the coloring layer and improve heat resistance.
It is preferable to use the binder in an amount of 10 to 30 parts by weight. Further, when dispersing and mixing the various materials, a dispersant such as a surfactant may be used as necessary. In addition, the coating amount is 5 to obtain sufficient color density.
~10 g/ m2 is preferred. Further, the applied coloring layer is preferably calendered to make the surface resistivity uniform. Further, the base paper is not particularly limited, but in order to make the coated surface uniform, it is preferable to use high-quality paper that has good smoothness with few irregularities and does not repel liquid. The dielectric layer 4 is composed of a release agent 9 to prevent the particles from sticking after fixing, a white inorganic fine powder and a binder to facilitate the permeation of the sublimated gas of the colorless sublimable dye. As the release agent 9, it is desirable to use a transparent or white material with high resistance, and representative examples thereof include:
Polyethylene and silicone resin are preferred. In particular, emulsions of these materials are preferred because they have excellent compatibility with binders. The white inorganic fine powder is preferably silicon oxide, which is effective as a coloring aid.
The binder preferably has high resistance, is transparent, has good binding properties with the coloring layer, and has strong bending strength, such as styrene-butadiene copolymer, acrylic resin, polyvinyl acetate, and the like. In particular, emulsions of these resins are preferred because they have excellent air permeability. The ratio of the various materials constituting the dielectric layer explained above is 100 parts by weight of the stripping agent, and 20 parts by weight of the inorganic fine powder to sufficiently transmit the colorless sublimable dye molecules.
~60 parts by weight, and the binder is preferably 60 to 150 parts by weight in order to strengthen the coating strength of the dielectric layer. Further, when dispersing and mixing the various materials, a dispersant such as a surfactant or a thickener may be used as necessary. In addition, in order to shorten the sublimation path of the colorless sublimable dye, increase color density, and further improve transfer efficiency, it is desirable that the coating amount be high resistance and thin.
2 to 5 g/m 2 is preferred. The conductive layer 7 has a surface resistivity of 10 9 Ω or less even in a low humidity atmosphere, and is made of an ion conductive material and an electronic conductive material in order to serve as an electrode that prevents particles from scattering due to the applied voltage during electrostatic transfer. This is a layer containing Examples of ion conductive substances include Licl,
Inorganic salts such as Nacl, Kcl, Mgcl 2 , Cacl 2 , etc., anionic or cationic conductivity such as sodium polystyrene sulfonate, sodium polyacrylate, polyvinylbenzyltrimethylammonium chloride, polydiallyldimethylammonium chloride, polyvinyltrimethylammonium chloride, etc. Examples include conductive pigments such as resins, alumina sol, silica gel, metastannic acid sol, and zeolite, and antistatic agents such as stearyltrimethylammonium chloride, lauryltrimethylammonium chloride, sodium ricinoleate sulfate, and sodium alkylbenzenesulfonate. Examples of electronically conductive substances include AgCl, AgI,
Halides such as CuCl, CuI, TiO 2 , Tl 2 O,
Oxides such as Al 2 O 3 , Ta 2 O 5 , SnO 2 , PbO, ZnO,
Sulfides such as ZnS, InSb, Mg 2 Si, ZnSb, AlSb,
Examples include intermetallic compounds such as InAs, InSb, AlP, GaP, and InP, and carbon black.
In the present invention, the 10 -2 ~10 3 Ω・
An electronically conductive powder with a resistivity of cm is preferred,
Among these, zinc oxide powder and titanium oxide powder having the above-mentioned specific resistivity are most preferred. The ratio of the various materials constituting the conductive layer described above is preferably in the range of 5 to 100 parts by weight of the ionically conductive material per 100 parts by weight of the electronically conductive material. In addition, as necessary, polyvinyl alcohol, methyl cellulose, hydroxyethyl cellulose, starch, modified starch, styrene-butadiene copolymer latex, vinyl acetate latex, acrylic acid latex, isobutene-maleic anhydride copolymer salt, styrene-maleic anhydride Binders such as acid copolymer salts, polyacrylic salts and soda, and inorganic or organic pigments such as clay, kaolin, aluminum hydroxide, aluminum oxide, calcium carbonate, barium sulfate, and polystyrene microballs, as well as antifoaming agents and dispersions. Agents, dyes, ultraviolet absorbers, etc. may be used as appropriate. In addition, the coating amount should be 2 to keep the surface resistivity below 10 9 Ω even in a low humidity atmosphere.
~10 g/ m2 is preferred. Further, the applied conductive layer is preferably calendered to make the surface resistance uniform. Hereinafter, the present invention will be explained in more detail with reference to Examples. Example 1 First, solutions (1), (2), and (3) were prepared according to the following formulations.
【表】
上記の材料にさらに水435重量部を加え、アト
ライタで30分間分散した発色層液を得た。この場
合、炭酸カルシウムは予め水と共にアトライタで
1時間分散したものを使用した。[Table] 435 parts by weight of water was further added to the above materials and dispersed in an attritor for 30 minutes to obtain a coloring layer liquid. In this case, calcium carbonate was dispersed in advance with water in an attritor for 1 hour.
【表】
上記の材料にさらに水250重量部を加え、導電
層液を得た。
次に発色層液を上質紙の片面に8g/m2(乾燥
後の重量、以下同様)塗工し、カレンダー処理し
た。さらに、この発色層上に誘電層液を3g/m2
塗工しカレンダー処理した。さらに、導電層液を
前記上質紙の反対面に7g/m2塗工しカレンダー
処理を行ない静電形クレー紙を得た。
20℃、60%RHの雰囲気での表面固有抵抗は誘
電層が3.5×1013Ωであり、裏面の導電層が4.9×
107Ωであつた。また20℃、15%RHの低湿度雰囲
気での表面固有抵抗は誘電層が6.5×1016Ωであ
り、裏面の導電層は2.7×108Ωであつた。
次、20℃60%RHの雰囲気下でアルミニウム板
上に色素増感された酸化亜鉛を塗布した感光板上
に形成された無色昇華性染料を含む粒子像の上に
静電形クレー紙の誘電層面を密着し、感光板の導
電層とこのクレー紙の導電層面に+1.2KVの電圧
を印加し、圧力を加えて静電転写を行なつた。こ
の時のクレー紙上転写された粒子は90%で、転写
した粒子像のボケはほとんどなかつた。さらに発
色像を得るため、230℃加熱したホツトプレート
で1.5秒間の圧力定着を行なつた。定着後、フア
ブラシで粒子を除去したところ、粒子の付着がな
い、充分に発色した、カブリのない鮮明な画像を
得た。
さらに20℃、15%RHの低湿度雰囲気下で前記
と同様の操作で静電転写を行なつた。この時のク
レー紙上に転写された粒子は80%で、転写した粒
子像のボケはほとんどなかつた。さらに加熱発色
後、フアブラシで粒子を除去したところ、粒子の
付着のない、充分に発色した、カブリのない鮮明
な画像を得た。
実施例 2[Table] 250 parts by weight of water was further added to the above materials to obtain a conductive layer liquid. Next, 8 g/m 2 (weight after drying, the same applies hereinafter) of the coloring layer liquid was applied to one side of a high-quality paper, and the paper was calendered. Furthermore, 3 g/m 2 of dielectric layer liquid was applied on this coloring layer.
Coated and calendered. Furthermore, 7 g/m 2 of the conductive layer liquid was applied to the opposite side of the above-mentioned high-quality paper and calendering was performed to obtain electrostatic clay paper. The surface resistivity at 20℃ and 60% RH is 3.5×10 13 Ω for the dielectric layer and 4.9× for the conductive layer on the back side.
It was 10 7 Ω. Furthermore, the surface resistivity in a low humidity atmosphere of 20° C. and 15% RH was 6.5×10 16 Ω for the dielectric layer, and 2.7×10 8 Ω for the conductive layer on the back surface. Next, in an atmosphere of 20°C and 60% RH, a dielectric layer of electrostatic clay paper was placed on a particle image containing a colorless sublimable dye formed on a photosensitive plate coated with dye-sensitized zinc oxide on an aluminum plate. The layer surfaces were brought into close contact with each other, and a voltage of +1.2 KV was applied to the conductive layer of the photosensitive plate and the conductive layer surface of this clay paper to perform electrostatic transfer by applying pressure. At this time, 90% of the particles were transferred onto the clay paper, and there was almost no blur in the transferred particle image. Furthermore, in order to obtain a colored image, pressure fixing was performed for 1.5 seconds on a hot plate heated at 230°C. After fixing, particles were removed with a fur brush, and a clear image with no particles attached, sufficiently developed color, and no fog was obtained. Further, electrostatic transfer was performed in the same manner as above in a low humidity atmosphere of 20° C. and 15% RH. At this time, 80% of the particles were transferred onto the clay paper, and there was almost no blurring in the transferred particle image. Furthermore, after color development by heating, particles were removed with a fur brush, and a clear image without any adhesion of particles, sufficiently developed color, and no fog was obtained. Example 2
【表】【table】
【表】
トリウム塩
[Table] Thorium salt
Claims (1)
け、前記発色層上に無色昇華性染料の分子を透過
しうる誘電層を重畳した静電形クレー紙におい
て、前記基紙の反対面にイオン伝導型物質と電子
伝導型物質を含み、かつ表面固有抵抗が109Ω以
下の導電層を設けたことを特徴とする静電形クレ
ー紙。 2 前記導電層の電子伝導型物質が少量の他種金
属をドーピングすることにより得られた150Kg/
cm2の圧力下に10-2〜103Ω・cmの比抵抗を有する
酸化亜鉛粉末であることを特徴とする特許請求の
範囲第1項記載の静電形クレー紙。 3 前記導電層の電子伝導型物質が他種金属の導
電膜を表面に形成した150Kg/cm2の圧力下に10-2
〜103Ω・cmの比抵抗を有する酸化チタン粉末で
あることを特徴とする特許請求の範囲第1項記載
の静電形クレー紙。[Scope of Claims] 1. An electrostatic clay paper in which a color-forming layer containing activated clay is provided on one side of a base paper, and a dielectric layer that can transmit molecules of a colorless sublimable dye is superimposed on the color-forming layer. An electrostatic clay paper characterized by having a conductive layer containing an ion conductive material and an electronic conductive material and having a surface resistivity of 10 9 Ω or less on the opposite side of the paper. 2. 150 kg /
The electrostatic clay paper according to claim 1, which is a zinc oxide powder having a specific resistance of 10 -2 to 10 3 Ω·cm under a pressure of 1 cm 2 . 3. The electron conductive material of the conductive layer is heated to 10 -2 under a pressure of 150 kg/cm 2 with a conductive film of another metal formed on the surface.
The electrostatic clay paper according to claim 1, which is a titanium oxide powder having a specific resistance of ~10 3 Ω·cm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56056981A JPS57172345A (en) | 1981-04-17 | 1981-04-17 | Improved electrostatic type clay paper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56056981A JPS57172345A (en) | 1981-04-17 | 1981-04-17 | Improved electrostatic type clay paper |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57172345A JPS57172345A (en) | 1982-10-23 |
JPH0411862B2 true JPH0411862B2 (en) | 1992-03-02 |
Family
ID=13042673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56056981A Granted JPS57172345A (en) | 1981-04-17 | 1981-04-17 | Improved electrostatic type clay paper |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57172345A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63125389A (en) * | 1986-11-14 | 1988-05-28 | Fuji Photo Film Co Ltd | Thermal recording material |
JPH0197679A (en) * | 1987-10-09 | 1989-04-17 | Ricoh Co Ltd | Thermosensitive recording medium |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5533134A (en) * | 1978-08-31 | 1980-03-08 | Oji Paper Co Ltd | Electrostatic recording medium |
JPS5541483A (en) * | 1978-09-20 | 1980-03-24 | Kanzaki Paper Mfg Co Ltd | Electrostatic recording body |
JPS5616143A (en) * | 1979-07-05 | 1981-02-16 | Matsushita Electric Ind Co Ltd | Electrostatic clay paper |
-
1981
- 1981-04-17 JP JP56056981A patent/JPS57172345A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5533134A (en) * | 1978-08-31 | 1980-03-08 | Oji Paper Co Ltd | Electrostatic recording medium |
JPS5541483A (en) * | 1978-09-20 | 1980-03-24 | Kanzaki Paper Mfg Co Ltd | Electrostatic recording body |
JPS5616143A (en) * | 1979-07-05 | 1981-02-16 | Matsushita Electric Ind Co Ltd | Electrostatic clay paper |
Also Published As
Publication number | Publication date |
---|---|
JPS57172345A (en) | 1982-10-23 |
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