| 摘要 |
The present invention provides a method and apparatus for allowing a high quality image to be recorded with good coloring. When record is performed on a recording medium by use of an anionic or cationic ink and a liquid composition, the ink containing a coloring material, the liquid composition containing fine particles in a dispersed state, the surfaces of the fine particles being charged with a polarity opposite to that of the ink, M, D, Ka, tw and t satisfy the relation of <math-cwu id="MATH-US-00001"> <number>1</number> <math> <mrow> <mi>t</mi> <mo>≤</mo> <mrow> <msup> <mrow> <mo>(</mo> <mrow> <mfrac> <mn>5</mn> <mn>4</mn> </mfrac> <mo>x</mo> <mfrac> <mi>MD</mi> <mi>Ka</mi> </mfrac> </mrow> <mo>)</mo> </mrow> <mn>2</mn> </msup> <mo>+</mo> <mi>tw</mi> </mrow> </mrow> </math> <mathematica-file id="MATHEMATICA-00001" file="US20030107631A1-20030612-M00001.NB"/> <image id="EMI-M00001" wi="216.027" he="18.00225" file="US20030107631A1-20030612-M00001.TIF" imf="TIFF" ti="MF"/> </math-cwu> where M (pg/mum2) is the amount of the liquid composition supplied to the recording medium per unit area, D (%) is the concentration of the fine particles of the liquid composition, Ka (mum/msec½) is the absorption coefficient of the liquid composition in the recording medium, tw (msec) is the time necessary for the liquid composition to moisten in the recording medium, and t (msec) is the time necessary for the ink to come into contact with the supplied liquid composition after the liquid composition is supplied to the recording medium.
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