Thermochromic color-memorization toner, cartridge including same housed therein, image formation apparatus, cartridge set, and image formation apparatus set
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United States of America Patent
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Apr 14, 2015
Grant Date -
Jan 31, 2013
app pub date -
Nov 13, 2009
filing date -
Nov 13, 2009
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Abstract
The present invention relates to a thermochromic color-memory toner containing: a microcapsule pigment encapsulating a thermochromic color-memory composition; and a binder resin, in which the microcapsule pigment shows a hysteresis characteristic that, in a temperature-rise process, decoloration starts when the temperature reaches t3 and the pigment completely reaches a decolored state in a temperature region of t4 or higher, and in a temperature-drop process, coloration starts when the temperature reaches t2 and the pigment completely reaches a colored state in a temperature region of ti or lower, and ti is in a range of from −50 to 0° C. and t4 is in a range of from 50 to 150° C.
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