EXTERNAL ADDITIVE FOR ELECTROPHOTOGRAPHIC TONER, METHOD FOR MANUFACTURING THE EXTERNAL ADDITIVE, ELECTROPHOTOGRAPHIC TONER USING THE EXTERNAL ADDITIVE, AND IMAGE FORMING APPARATUS USING THE ELECTROPHOTOGRAPHIC TONER

   
   

An external additive for a toner, having an average primary particle diameter not greater than 100 nm and including at least inorganic fine particles and a hydrophobizing agent applied to the surface of the inorganic fine particles, wherein after the external additive is treated with chloroform, pyrolysates of the residual components include a compound having at least one structure selected from organopolysiloxane structures and ring siloxane structures.

Un additivo esterno per un toner, avendo un diametro primario medio non piĆ¹ notevolmente di 100 nm della particella ed includendo almeno le particelle fini inorganiche e un agente hydrophobizing applicato alla superficie delle particelle fini inorganiche, in cui dopo che l'additivo esterno sia trattato con cloroformio, i pyrolysates dei componenti residui includono un residuo che ha almeno una struttura scelta dalle strutture del organopolysiloxane e dalle strutture del silossano dell'anello.

 
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