THERMOCHROMIC COLOR-MEMORIZATION TYPE TONER, CARTRIDGE INCLUDING SAME HOUSED THEREIN, IMAGE FORMATION APPARATUS, CARTRIDGE SET, AND IMAGE FORMATION APPARATUS SET
申请人:THE PILOT INK CO., LTD.
公开号:EP2500778A1
公开(公告)日:2012-09-19
The present invention provides a thermochromic color-memory toner having a function that an image formed on a copied matter can be maintained in either in a colored state or a decolored state.
A thermochromic color-memory toner containing: at least 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 where the pigment is in a colored state, decoloration starts when the temperature reaches temperature t3 and the pigment completely reaches a decolored state in a temperature region of equal to or higher than temperature t4 which is higher than temperature t3, and, in a temperature-drop process, coloration starts when the temperature reaches temperature t2 which is lower than temperature t3 and the pigment completely reaches a colored state in a temperature region of equal to or lower than temperature t1 which is lower than temperature t2, with either the colored state or the decolored state being selectively observed visually in a temperature region between temperature t2 and temperature t3, and the temperature t1 is in a range of from -50 to 0°C and the temperature t4 is in a range of from 50 to 150°C; a cartridge including the toner housed therein; an image formation, apparatus; a cartridge set; and an image formation apparatus set.
本发明提供了一种热致变色彩色记忆调色剂,其功能是可以将复印件上形成的图像保持在有色状态或脱色状态。
热变色彩色记忆调色剂含有至少一种封装了热致变色记忆成分的微胶囊颜料;其中,微胶囊颜料具有以下滞后特性:在温度上升过程中,颜料处于有色状态,当温度达到温度 t3 时开始脱色,颜料在等于或高于温度 t4 的温度区域内完全达到脱色状态,该温度区域高于温度 t3;在温度下降过程中,当温度达到温度 t4 时开始脱色,颜料在等于或高于温度 t5 的温度区域内完全达到脱色状态、当温度达到低于温度 t3 的温度 t2 时开始着色,颜料在等于或低于低于温度 t2 的温度 t1 的温度区域内完全达到着色状态,在温度 t2 和温度 t3 之间的温度区域内可选择性地观察到着色状态或脱色状态,温度 t1 的范围为 -50 至 0°C,温度 t4 的范围为 50 至 150°C;包括墨粉在内的墨盒;图像形成装置;墨盒套件;以及图像形成装置套件。