INK POWDER Russian patent published in 2015 - IPC G03G9/08 G03G9/87 

FIELD: physics, photo.

SUBSTANCE: invention relates to ink powders used in various imaging processes. Claimed ink powder comprises particles each including binding polymer and dyestuff. It features temperature Tr [°C] whereat modulus of loss in elasticity reaches its maximum makes 40-55°C at measurement of dynamic viscoelastic properties of ink powder at 30-200°C. When G"(Tr) [Pa] describes said maximum value, G"(Tr+15) [Pa] designates said modulus of loss in elasticity at temperature Tr+15 [°C]. G"(Tr+30) [Pa] designates said modulus of loss in elasticity at temperature Tr+30 [°C], G"(Tr), G"(Tr+15) and G"(Tr+30) satisfy the preset relationships.

EFFECT: low-temperature registration even at high-rate electric-photographic processes, high efficiency of cleaning at high-temperature application and stability at high-temperature storage.

5 cl, 6 tbl, 34 ex