发明名称 Recording ink, ink cartridge, inkjet recording method, and inkjet recording apparatus
摘要 The present invention provides a recording ink including a composite pigment particle, a water-soluble solvent, and water, wherein the composite pigment particle is a primary particle coated with a coating resin, wherein the primary particle is a white pigment on the surface of which an oil-soluble dye is adsorbed or attached. In one aspect, the white pigment is preferably at least one selected from a white inorganic pigment, a pearl pigment, and an extender pigment, in another aspect, the coating resin is preferably one of a (meth)acrylic resin, a polyester resin, and a polyurethane resin, wherein the acid value of the coating resin is from 50 mgKOH/g to 250 mgKOH/g, and in another aspect, an average particle diameter (D50%) of the composite pigment particle is preferably 150 nm or less.
申请公布号 US8109622(B2) 申请公布日期 2012.02.07
申请号 US20070282437 申请日期 2007.03.09
申请人 GOTO HIROSHI;MATSUYAMA AKIHIKO;NAGAI KIYOFUMI;RICOH COMPANY, LTD. 发明人 GOTO HIROSHI;MATSUYAMA AKIHIKO;NAGAI KIYOFUMI
分类号 G01D11/00 主分类号 G01D11/00
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