Method of producing toner
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United States of America Patent
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Mar 17, 2015
Grant Date -
Oct 10, 2013
app pub date -
Nov 21, 2011
filing date -
Dec 2, 2010
priority date (Note) -
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Abstract
The present invention provides a toner excellent in low-temperature fixability and also excellent in heat-resistant storage property, offset resistance, and durability. In a process for producing a toner containing toner particles by emulsion aggregation, each toner particle includes a binder resin of which a main component is a block polymer having a crystal structure, a colorant, and a release agent; the binder resin includes polyester as a main component; the rate of a portion capable of forming a crystal structure to the binder resin is 50 to 80 mass %; a peak temperature Tp of a maximum endothermic peak attributed to the binder resin is 50 to 80° C. in endothermic amount measurement of the toner with a differential scanning calorimeter (DSC); and fused particles are heated at a heating temperature t (° C.) satisfying Tp′−15.0≦t≦Tp′−5.0 for at least 0.5 hr.
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