ELECTROPHOTOGRAPHIC TONER, PROCESS FOR PREPARING THE SAME, AND IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS USING THE TONER

摘要

PURPOSE: An electrophotographic toner is provided to ensure low temperature fixation, fixation property, heat storage and anti-offset property, and high glossiness and to reduce harmfulness for environment and human body. CONSTITUTION: An electrophotographic toner includes a latex, colorant, wax, Si and Fe. The toner has 3-1,000 ppm Si and Fe. A molar ratio of Si/Fe may be about 0.1 to about 5. The fixation property of toner satisfies the condition of chemical formula 1 and chemical formula 2. In chemical formulas, MFTA represents a minimum fixation temperature in a low speed printing of 160 mm/sec. MFTB represents a minimum fixation temperature in a high speed printing of 290 mm/sec. HOTA represents a hot offset temperature in a low speed printing of 160 mm/sec. HOTB represents a hot offset temperature in a high speed printing of 290 mm/sec.