Provided is a resin particle comprising a resin (a) and a filler (b) contained in the particle; the particle has a volume average particle diameter of from 0.1 to 300 µm and a shape factor of from 110 to 300; the particle has an outer shell layer (S) comprising at least a portion of the filler (b) ; the layer (S) is at least 0.01 µm thick and has a thickness that is 1/2 or less of the maximum inscribed circle radius of the particle cross section. When used as a toner resin, it is excellent in blade cleaning properties and wide in the fixation temperature range; when employed as a paint additive or a cosmetics additive, it is excellent in masking properties; when used as paper coating additive, it is excellent in ink retention; when utilized as an abrasive, it is excellent in abrasion.
申请公布号
EP1645586(A4)
申请公布日期
2006.07.26
申请号
EP20040747522
申请日期
2004.07.14
申请人
SANYO CHEMICAL INDUSTRIES, LTD.;RICOH COMPANY, LTD.