TONER Russian patent published in 2012 - IPC G03G9/08 

FIELD: chemistry.

SUBSTANCE: in toner, which contains at least resin binder, a dye, an ester compound and low-melting material, the ester compound is an ester of dipentaerythritol with carboxylic acid having from at least 18 to 25 or less carbon atoms, and if melting point of the ester compound is denoted by Tm_(A) (°C), and melting point of the low-melting material is denoted by Tm_(B) (°C), the toner satisfies the relationship Tm_(B)≤Tm_(A)+5.

EFFECT: excellent operating characteristic of low-temperature binding and providing the advantage of high image density without causing any fuzziness even over a long service life.

11 cl, 1 dwg, 3 tbl, 2 ex