JP5843140B2 - インクジェット記録用水性インク、インクカートリッジ及びインクジェット記録装置 - Google Patents
インクジェット記録用水性インク、インクカートリッジ及びインクジェット記録装置 Download PDFInfo
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- JP5843140B2 JP5843140B2 JP2011188027A JP2011188027A JP5843140B2 JP 5843140 B2 JP5843140 B2 JP 5843140B2 JP 2011188027 A JP2011188027 A JP 2011188027A JP 2011188027 A JP2011188027 A JP 2011188027A JP 5843140 B2 JP5843140 B2 JP 5843140B2
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- DZLFLBLQUQXARW-UHFFFAOYSA-N tetrabutylammonium Chemical compound CCCC[N+](CCCC)(CCCC)CCCC DZLFLBLQUQXARW-UHFFFAOYSA-N 0.000 description 1
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical compound CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- QEMXHQIAXOOASZ-UHFFFAOYSA-N tetramethylammonium Chemical compound C[N+](C)(C)C QEMXHQIAXOOASZ-UHFFFAOYSA-N 0.000 description 1
- CHYBTAZWINMGHA-UHFFFAOYSA-N tetraoctylazanium Chemical compound CCCCCCCC[N+](CCCCCCCC)(CCCCCCCC)CCCCCCCC CHYBTAZWINMGHA-UHFFFAOYSA-N 0.000 description 1
- OSBSFAARYOCBHB-UHFFFAOYSA-N tetrapropylammonium Chemical compound CCC[N+](CCC)(CCC)CCC OSBSFAARYOCBHB-UHFFFAOYSA-N 0.000 description 1
- YODZTKMDCQEPHD-UHFFFAOYSA-N thiodiglycol Chemical compound OCCSCCO YODZTKMDCQEPHD-UHFFFAOYSA-N 0.000 description 1
- 229950006389 thiodiglycol Drugs 0.000 description 1
- JOUDBUYBGJYFFP-FOCLMDBBSA-N thioindigo Chemical compound S\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2S1 JOUDBUYBGJYFFP-FOCLMDBBSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 description 1
- 125000004205 trifluoroethyl group Chemical group [H]C([H])(*)C(F)(F)F 0.000 description 1
- RIUWBIIVUYSTCN-UHFFFAOYSA-N trilithium borate Chemical compound [Li+].[Li+].[Li+].[O-]B([O-])[O-] RIUWBIIVUYSTCN-UHFFFAOYSA-N 0.000 description 1
- FZGFBJMPSHGTRQ-UHFFFAOYSA-M trimethyl(2-prop-2-enoyloxyethyl)azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CCOC(=O)C=C FZGFBJMPSHGTRQ-UHFFFAOYSA-M 0.000 description 1
- RRHXZLALVWBDKH-UHFFFAOYSA-M trimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azanium;chloride Chemical compound [Cl-].CC(=C)C(=O)OCC[N+](C)(C)C RRHXZLALVWBDKH-UHFFFAOYSA-M 0.000 description 1
- OEIXGLMQZVLOQX-UHFFFAOYSA-N trimethyl-[3-(prop-2-enoylamino)propyl]azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CCCNC(=O)C=C OEIXGLMQZVLOQX-UHFFFAOYSA-N 0.000 description 1
- YFTHZRPMJXBUME-UHFFFAOYSA-N tripropylamine Chemical compound CCCN(CCC)CCC YFTHZRPMJXBUME-UHFFFAOYSA-N 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
Landscapes
- Ink Jet (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
前記着色剤が、リン酸基により修飾された自己分散型顔料を含み、
前記水性インクが、さらに、ホウ酸類と、カチオン性ポリマー及び塩基性アミノ酸の少なくとも一方とを含むことを特徴とする。
水性インク組成(表1)における、自己分散型カーボンブラックを除く成分を、均一に混合しインク溶媒を得た。つぎに、水に分散させた自己分散型カーボンブラックに前記インク溶媒を加え、均一に混合した。その後、得られた混合物を、東洋濾紙(株)製のセルロースアセテートタイプメンブレンフィルタ(孔径3.00μm)でろ過することで、実施例1〜9及び比較例1〜6のインクジェット記録用水性インクを得た。
スライドガラスに、実施例及び比較例の水性インク12μLを滴下した。ついで、前記スライドガラスを、100℃の環境下に一晩静置することで、前記水性インクを蒸発乾固させた。つぎに、前記蒸発乾固後の固形物上にスポイトで水3滴を滴下した。このようにして作製した評価サンプルを肉眼及び倍率50倍の顕微鏡で観察し、下記評価基準に従って再分散性を目視評価した。
A :図2(a)に示すように、顕微鏡で見ても、前記固形物が水に完全に溶解・分散していた。
B+:肉眼では前記固形物が水に完全に溶解・分散しているように観察されたが、顕微鏡で見ると水に溶解・分散しきれていない前記固形物の残りが観察された。
B :前記固形物が水に徐々に溶解・分散するが、肉眼でも水に溶解・分散しきれていない前記固形物の残りが観察され、顕微鏡で見ると図2(b)に示す程度の状態であった。
B−:前記固形物が水に若干色がつく程度に溶解・分散するが、塊状のままのものもあった。
C :図2(c)に示すように、顕微鏡で見ても、前記固形物が水に全く溶解・分散せず、塊状のままの状態であった。
ブラザー工業(株)製のインクジェットプリンタ搭載デジタル複合機DCP−385Cを使用して、実施例及び比較例の水性インクを用いて普通紙上に解像度600dpi×600dpiで黒単色パッチを含む画像を記録し評価サンプルを作製した。前記評価サンプルの光学濃度(OD値)を、X−Rite社製の分光測色計SpectroEye(光源:D50、濃度基準:ANSI T、白色ベースAbs、内蔵フィルタNO(なし))により測定した。前記普通紙には、Hammer Mill社製のLaser Print(普通紙1)、XEROX社製のBusiness(普通紙2)及びRecycled Supreme(普通紙3)を用いた。前記光学濃度(OD値)の測定は、各普通紙について5回行った。
2 インクカートリッジ
3 インク吐出手段(インクジェットヘッド)
4 ヘッドユニット
5 キャリッジ
6 駆動ユニット
7 プラテンローラ
8 パージ装置
Claims (11)
- 着色剤、水及び水溶性有機溶剤を含むインクジェット記録用水性インクであって、
前記着色剤が、リン酸基により修飾された自己分散型顔料を含み、
前記水性インクが、さらに、ホウ酸類と、塩基性アミノ酸とを含み、
前記水性インクにおける前記ホウ酸類(Y)と前記塩基性アミノ酸(Z)との重量比が、Y:Z=1:0.01〜1:0.06であることを特徴とするインクジェット記録用水性インク。
- 前記水性インク全量に対する前記塩基性アミノ酸の配合量が、0.005重量%〜0.03重量%であることを特徴とする請求項1記載のインクジェット記録用水性インク。
- 前記自己分散型顔料が、自己分散型カーボンブラックであることを特徴とする請求項1又は2記載のインクジェット記録用水性インク。
- 前記ホウ酸類が、ホウ酸アンモニウム及びホウ酸カリウムの少なくとも一方であることを特徴とする請求項1〜3のいずれか一項に記載のインクジェット記録用水性インク。
- 前記水性インクにおける前記リン酸基により修飾された自己分散型顔料(X)と前記塩基性アミノ酸(Z)との重量比が、X:Z=1:0.00025〜1:0.0075であることを特徴とする請求項1〜4のいずれか一項に記載のインクジェット記録用水性インク。
- 前記塩基性アミノ酸が、アルギニン及びリジンの少なくとも一方を含むことを特徴とする請求項1〜5のいずれか一項に記載のインクジェット記録用水性インク。
- 着色剤、水及び水溶性有機溶剤を含むインクジェット記録用水性インクであって、
前記着色剤が、リン酸基により修飾された自己分散型顔料を含み、
前記水性インクが、さらに、ホウ酸類と、塩基性アミノ酸とを含み、
前記水性インクにおける前記ホウ酸類(Y)と前記塩基性アミノ酸(Z)との重量比が、Y:Z=1:0.000333〜1:1であり、前記水性インクにおける前記リン酸基により修飾された自己分散型顔料(X)と前記塩基性アミノ酸(Z)との重量比が、X:Z=1:0.00025〜1:0.0075であることを特徴とするインクジェット記録用水性インク。
- 前記水性インク全量に対する前記塩基性アミノ酸の配合量が、0.005重量%〜0.03重量%であることを特徴とする請求項7記載のインクジェット記録用水性インク。
- 前記自己分散型顔料が、自己分散型カーボンブラックであることを特徴とする請求項7又は8記載のインクジェット記録用水性インク。
- 前記ホウ酸類が、ホウ酸アンモニウム及びホウ酸カリウムの少なくとも一方であることを特徴とする請求項1〜9のいずれか一項に記載のインクジェット記録用水性インク。
- 前記塩基性アミノ酸が、アルギニン及びリジンの少なくとも一方を含むことを特徴とする請求項1〜10のいずれか一項に記載のインクジェット記録用水性インク。
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