申请人:Seiko Epson Corporation
公开号:EP2366748A2
公开(公告)日:2011-09-21
An ink composition has a viscosity of 25 mPa·s to 35 mPa·s at 20°C, wherein a, b, and c are 800 or more, 7.4 to 14, and 0.16 to 0.22, respectively, when a cylindrical portion is formed by expanding the ink composition so as to have a free surface parallel to the expanding direction of the ink composition, the rate of change in width of the cylindrical portion with time is measured in the expanding direction thereof, and the rate of change in width of the cylindrical portion with time is fit to a quadratic function given by the following equation: S=-at2-bt+c where S is the rate of change in width of the cylindrical portion and t is the time in seconds.
一种油墨组合物在 20°C 时的粘度为 25 mPa-s 至 35 mPa-s,其中 a、b 和 c 分别为 800 或以上、7.4 至 14 和 0.16 至 0.22,当通过膨胀油墨组合物形成圆柱形部分,使其自由表面平行于油墨组合物的膨胀方向时,在其膨胀方向上测量圆柱形部分宽度随时间的变化率,并将圆柱形部分宽度随时间的变化率拟合为由下式给出的二次函数:S=-at2-bt+c 其中,S 是圆柱形部分宽度的变化率,t 是时间(秒)。