| 摘要 |
PROBLEM TO BE SOLVED: To provide a liq. developer giving satisfactory printed matter with high reproducibility even after repeated printing by using a colorant having a specified solvent resistance to xylene. SOLUTION: Colored particles consisting essentially of a pigment and a resin are dispersed by 0.1-20 wt.% in a petroleum hydrocarbon as a carrier liq. The amt. of the pigment in the colored particles is 5-30 wt.%, preferably 10-25 wt.%. The bonding resin is, e.g. alkyd resin, styrene resin, phenolic resin, acrylic resin, styrene-acrylic resin, polyester resin, rosin modified phenolic resin or a rosin modified resin and this rosin modified resin is preferably used. The solvent resistance of the colorant to xylene is >3, preferably >4. The average particle diameter of the colored particles is 0.3-5μm, preferably 0.5-3μm.
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