JPH012065A - Color liquid developer for electrostatography - Google Patents
Color liquid developer for electrostatographyInfo
- Publication number
- JPH012065A JPH012065A JP62-156606A JP15660687A JPH012065A JP H012065 A JPH012065 A JP H012065A JP 15660687 A JP15660687 A JP 15660687A JP H012065 A JPH012065 A JP H012065A
- Authority
- JP
- Japan
- Prior art keywords
- liquid developer
- color
- resin
- pigment
- color liquid
- 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
- 239000007788 liquid Substances 0.000 title claims description 22
- 239000000049 pigment Substances 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims 3
- 239000003086 colorant Substances 0.000 description 4
- 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 3
- 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 3
- 239000011230 binding agent Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 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 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 2
- 229920000180 alkyd Polymers 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 235000010187 litholrubine BK Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- BOSAWIQFTJIYIS-UHFFFAOYSA-N 1,1,1-trichloro-2,2,2-trifluoroethane Chemical compound FC(F)(F)C(Cl)(Cl)Cl BOSAWIQFTJIYIS-UHFFFAOYSA-N 0.000 description 1
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical compound C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 description 1
- 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
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- KGIGUEBEKRSTEW-UHFFFAOYSA-N 2-vinylpyridine Chemical compound C=CC1=CC=CC=N1 KGIGUEBEKRSTEW-UHFFFAOYSA-N 0.000 description 1
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- PZTQVMXMKVTIRC-UHFFFAOYSA-L chembl2028348 Chemical compound [Ca+2].[O-]S(=O)(=O)C1=CC(C)=CC=C1N=NC1=C(O)C(C([O-])=O)=CC2=CC=CC=C12 PZTQVMXMKVTIRC-UHFFFAOYSA-L 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 235000010985 glycerol esters of wood rosin Nutrition 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 150000002688 maleic acid derivatives Chemical class 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical class OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920005792 styrene-acrylic resin Polymers 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［技術分野］
本発明は静電写真用カラー液体現像剤に関する。 −
［従来技術］
電子写真、静電記録等の静電写真に用いられるカラー液
体現像剤は数色の顔料とロジン、アマニ油、大豆油、変
性アルキッド樹脂、スチレン−ブタジェン共重合体、ア
クリル樹脂等の樹脂又は油脂を各色ごとに脂肪族炭化水
素のような高絶縁性低誘電率の担体液体中に粉砕分散す
ることによって得ている。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to color liquid developers for electrostatography. - [Prior art] Color liquid developers used for electrostatic photography such as electrophotography and electrostatic recording include several colors of pigments, rosin, linseed oil, soybean oil, modified alkyd resin, styrene-butadiene copolymer, and acrylic resin. These resins or oils are obtained by pulverizing and dispersing each color into a highly insulating and low dielectric constant carrier liquid such as an aliphatic hydrocarbon.
そしてこのよう−な一組の現像剤を用いてカラー画像を
得る場合には、電子写真感光紙や静電記録紙等に常法に
より、静電潜像を形成後、これを液体現像剤で現像する
プロセスを各色について繰り返し行ない、数色のトナー
を順次重ね合わせることにより、カラー画像を得る。When a color image is obtained using such a set of developers, an electrostatic latent image is formed on electrophotographic paper, electrostatic recording paper, etc. by a conventional method, and then this is formed with a liquid developer. A color image is obtained by repeating the developing process for each color and sequentially overlapping toners of several colors.
カラー静電写真は前述のように数色のトナーを重ね合わ
せるために、地肌部分のカブリが累積される。このよう
にして得られたカラー画像はコントラストが低いもので
あり、十分に満足なものではなかった。As mentioned above, in color electrostatic photography, because several colors of toner are superimposed, fog accumulates in the background area. The color image thus obtained had low contrast and was not fully satisfactory.
カラー静電写真では例えば黒、シアン、マゼンタ、イエ
ローの順にトナーを重ねる方法があり、一般的にマゼン
タトナーのカブリが目立っている。In color electrostatic photography, for example, there is a method in which toner is layered in the order of black, cyan, magenta, and yellow, and fogging of magenta toner is generally noticeable.
マゼンタトナーに用いられる顔料としては鮮明な紫みの
色調とすぐれた透明性からカーミン６Ｂに代表されるア
ゾレーキ顔料が用いられるが、アゾレーキ顔料を用いて
前述のような方法で分散して得られるトナーは全て地肌
カブリの劣るものであった。Azo lake pigments such as Carmine 6B are used as pigments for magenta toners due to their clear purplish tone and excellent transparency, but toners obtained by dispersing azo lake pigments using the method described above All had poor background fog.
また、別の方法で得られるトナー として染料によりラ
テックスを染色し、これをトナーに応用することも検討
されているが（特開昭４５−２５８７８ 、特開昭５６
−１０６１９など）、このものではラテックスに染み込
まなかった染料の除去が完全でないと地肌カブリを生じ
させるといった問題がある。In addition, dyeing latex with a dye and applying it to toner is also being considered (Japanese Patent Laid-Open Nos. 45-25878, 1983).
-10619, etc.), which has the problem of causing background fog if the dye that has not penetrated into the latex is not completely removed.
［目 的］
本発明の目的は前述したような欠点を除去した重ね現像
型のカラー静電写真に適したマゼンタ色液体現像剤を提
供することにある。[Objective] An object of the present invention is to provide a magenta liquid developer suitable for overlapping development type color electrophotography, which eliminates the above-mentioned drawbacks.
［構 成］
本発明者は上記課題を解決するため従来より研究を重ね
てきたが、着色剤として特定の顔料を選択することによ
り解決し得ることを見出し、本発明を完成するに至った
。[Structure] The present inventor has conducted repeated research in order to solve the above problems, and has found that the problem can be solved by selecting a specific pigment as a coloring agent, and has completed the present invention.
すなわち、本発明は担体液体中に顔料及び樹脂を主成分
とするトナーを分散してなる液体現像剤において、該顔
料が下記−数式
％式％
を表わす。コ
で表わされることを特徴とする静電写真用カラー液体現
像剤である。 ′
本発明で使用される顔料は前記−数式で示されるナフト
ールＡｓ系不溶性アゾ顔料である。That is, the present invention provides a liquid developer comprising a toner mainly composed of a pigment and a resin dispersed in a carrier liquid, in which the pigment has the following formula: %. This is a color liquid developer for electrostatic photography characterized by the following. ' The pigment used in the present invention is a naphthol As-based insoluble azo pigment represented by the above formula.
このものの代表例としては次のようなものかあ、げられ
る。A typical example of this is as follows.
このような顔料を用いて液体現像剤を調整するには、こ
の顔料１〜１０重量部と結着剤１〜５０重量部と担体液
４０〜１００重量部とを、アトライター、ボールミル、
サンドミルなとで混線分散して濃縮トナーとし、必要に
よりこれを同様な担体液で希釈すればよい。In order to prepare a liquid developer using such a pigment, 1 to 10 parts by weight of this pigment, 1 to 50 parts by weight of a binder, and 40 to 100 parts by weight of a carrier liquid are mixed in an attritor, a ball mill,
A concentrated toner may be obtained by cross-dispersing the toner using a sand mill, and if necessary, this may be diluted with a similar carrier liquid.
ここでの結着剤としてはアルキッド樹脂、ロジン変性フ
ェノールホルムアルデヒド樹脂、水素添加ロジンの多価
アルコールエステル、ポリアクリル又はポリメタクリル
エステル樹脂、スチレン樹脂、塩化ゴムなどが使用され
るが、特に下記−数式（ｎ）
［但し、Ｒ３は水素又はメチル基、Ｒ４は−ＣＯＯＣ，
８２Ｆ１＋１又は−〇〇〇〇、 Ｈ２ｎ＋１（ｎは６〜
２０の整数）である。］
で表わされるモノマーとアクリル酸、メタクリル酸、ビ
ニルピリジン、下記−数式（ＩＩＩ）［但し、Ｒ５は水
素又はメチル基、Ｒ６は−ＣＯＯＣｎＨ２ｎ＋１又は−
０ＣＯＣ，Ｈ２ｎ＋ｉ（ｎは１〜５の整数）である。］
で表わされるモノマー、下記−数式（ＩＶ）［但し、Ｒ
７は水素又はメチル基、Ｒ８は−Ｎ（Ｃｔ−１３＞２、
−Ｎ（Ｃ２Ｈ５）２又は−ＯＨである。］
で表わされる七ツマ−及びエチレングリコールジメタア
クリレートから選ばれる１種又は２種以上の七ツマ−と
の共重合体（ブロック共重合体を含む）の使用が効果的
である。−数式（ｎ）で表わされるビニルモノマー成分
必共重合体に占める割合は３０〜９５重ω％くらいが適
当である。As the binder here, alkyd resin, rosin-modified phenol formaldehyde resin, polyhydric alcohol ester of hydrogenated rosin, polyacrylic or polymethacrylic ester resin, styrene resin, chlorinated rubber, etc. are used, but in particular, the following - formula (n) [However, R3 is hydrogen or methyl group, R4 is -COOC,
82F1+1 or -〇〇〇〇, H2n+1 (n is 6~
20 integers). ] A monomer represented by acrylic acid, methacrylic acid, vinylpyridine, the following formula (III) [However, R5 is hydrogen or a methyl group, R6 is -COOCnH2n+1 or -
0COC, H2n+i (n is an integer from 1 to 5). ] A monomer represented by the following formula (IV) [However, R
7 is hydrogen or methyl group, R8 is -N (Ct-13>2,
-N(C2H5)2 or -OH. It is effective to use a copolymer (including a block copolymer) with one or more heptamers selected from the following heptamers and ethylene glycol dimethacrylate. - The appropriate proportion of the vinyl monomer component represented by formula (n) in the copolymer is about 30 to 95% by weight.
結着剤には必要に応じてこれら（エステルガム、軟化ロ
ジン等の天然樹脂や、天然樹脂変性マレイン酸樹脂、天
然樹脂変性フェノール樹脂、天然樹脂変性ポリエステル
樹脂、天然樹脂変性ペンタエリスリトール樹脂、エポキ
シ樹脂等の天然樹脂変性熱硬化性樹脂が加えられてよい
。These binders may be used as necessary (natural resins such as ester gum, softened rosin, natural resin-modified maleic acid resin, natural resin-modified phenol resin, natural resin-modified polyester resin, natural resin-modified pentaerythritol resin, epoxy resin). Natural resin-modified thermosetting resins, such as, may be added.
本発明の現像液に使用する担体液としては、脂肪族炭化
水素またはその誘導体が好ましい。The carrier liquid used in the developer of the present invention is preferably an aliphatic hydrocarbon or a derivative thereof.
その具体例をあげると、たとえばパラフィン系又はイソ
パラフィン系炭化水素（エタン社製のアイソバート１、
アイソパーＧ１アイソパート１アイソパーに、ＮＯ，６
ソルベツソ１００など）、リグロイン、ｎ−ヘキサン、
ｎ−へブタン、１ｓｏ−オクタン、ｎ−オクタン、四塩
化炭素、トリクロロトリフルオロエタン、シクロヘキサ
ン等が単独であるいは２種以上が組合わされて使用され
る。Specific examples include paraffinic or isoparaffinic hydrocarbons (Isovert 1 manufactured by Ethane Co., Ltd.,
Isopar G1 Isopart 1 Isopar, NO, 6
sorbetso 100, etc.), ligroin, n-hexane,
N-hebutane, 1so-octane, n-octane, carbon tetrachloride, trichlorotrifluoroethane, cyclohexane, etc. may be used alone or in combination of two or more.
以下、実施例において本発明をさらに詳細に説明する。Hereinafter, the present invention will be explained in more detail in Examples.
実施例１〜５ 、
下記表１の組成による混合物をボールミルに入れ２４時
間分散して濃縮トナーを作った。この濃縮トナー３０部
をアイソパー０１９で希釈して液体現像剤を調整した。Examples 1 to 5 A mixture having the composition shown in Table 1 below was placed in a ball mill and dispersed for 24 hours to prepare a concentrated toner. Thirty parts of this concentrated toner was diluted with Isopar 019 to prepare a liquid developer.
続いてこの液体現像剤を用い、静電プリンタープロッタ
ーＶ−８０（バーサチック社製）で印字したところ、地
肌部のカブリのない画像濃度の高い画像が得られた。下
記表２に評価結果を示す。Subsequently, when this liquid developer was used for printing with an electrostatic printer plotter V-80 (manufactured by Versatic Co., Ltd.), an image with high image density and no background fog was obtained. The evaluation results are shown in Table 2 below.
比較例
実施例の顔料を下記−数式（Ｖ）で示されるブリリアン
トカーミン６Ｂに変えたほかは、実施例と同様な方法で
比較用液体現像剤を調整した。Comparative Example A comparative liquid developer was prepared in the same manner as in the example except that the pigment in the example was changed to brilliant carmine 6B represented by the following formula (V).
この液体現像剤を用いて実施例と同様に印字したところ
、画像濃度が低く、地肌部のカブリの目立つものであっ
た。When printing was performed using this liquid developer in the same manner as in the example, the image density was low and fog was noticeable in the background area.
・・・−数式、（Ｖ） 表１ 表２ で、濃度はマクベス反射ＩＩ度肝により測定した。...-mathematical formula, (V) Table 1 Table 2 The concentration was measured by Macbeth reflex II.
［効 果］
本発明の構成による液体現像剤は、実施例及び比較例の
対比から明らかなよう′に、本発明の液体現像剤は地肌
カブリがなく、画像濃度も高いものであり、色重ね現像
によりカラー画像を得るときのコントラストを向上させ
ることができる等顕著な効果を奏するものである。[Effects] As is clear from the comparison between Examples and Comparative Examples, the liquid developer of the present invention has no background fog, has high image density, and has no color overlap. This has remarkable effects such as being able to improve the contrast when a color image is obtained by development.
またこの他、本発明が静電写真法による単色（赤系）カ
ラー画像を得るための静電写真用カラー液体現像剤に応
用できることはもちろんで −ある。In addition, it goes without saying that the present invention can be applied to a color liquid developer for electrostatic photography for obtaining monochromatic (reddish) color images by electrostatic photography.
Claims (1)
散してなる液体現像剤において、該顔料が下記一般式 ▲数式、化学式、表等があります▼（ I ） ［式中、Ｒは水素、▲数式、化学式、表等があります▼
（Ａ、Ｂおよび Ｃは−ＣＨ＿３、−Ｃｌ、−ＮＯ＿２、−ＯＣＨ＿３、
−ＮＨ・ＣＯ・ＣＨ＿３、−ＯＣ＿２Ｈ＿５、Ｈ）Ｘお
よびＹは−ＣＨ＿３、−Ｃｌ、−ＮＯ＿２、−ＯＣＨ＿
３、−ＳＯ＿２・ＮＨ・ＣＨ＿３、Ｈ、−ＳＯ＿２・Ｎ
（Ｃ＿２Ｈ＿５）＿２、 −ＣＯ・▲数式、化学式、表等があります▼（Ｒ＿２：
−ＣＨ＿３、 −Ｃｌ、−ＣＯＮＨ＿２、Ｈ） を表わす。］ で表わされることを特徴とする静電写真用カラー液体現
像剤。[Claims] A liquid developer comprising a toner mainly composed of a pigment and a resin dispersed in a carrier liquid, in which the pigment has the following general formula ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ ( I ) [Formula Inside, R is hydrogen, ▲There are mathematical formulas, chemical formulas, tables, etc.▼
(A, B and C are -CH_3, -Cl, -NO_2, -OCH_3,
-NH・CO・CH_3, -OC_2H_5, H) X and Y are -CH_3, -Cl, -NO_2, -OCH_
3, -SO_2・NH・CH_3, H, -SO_2・N
(C_2H_5)_2, -CO・▲There are mathematical formulas, chemical formulas, tables, etc.▼(R_2:
-CH_3, -Cl, -CONH_2, H). ] A color liquid developer for electrostatic photography, characterized by the following:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-156606A JPH012065A (en) | 1987-06-25 | Color liquid developer for electrostatography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-156606A JPH012065A (en) | 1987-06-25 | Color liquid developer for electrostatography |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS642065A JPS642065A (en) | 1989-01-06 |
| JPH012065A true JPH012065A (en) | 1989-01-06 |
Family
ID=
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