申请人:Bannai Akiko
公开号:US20050231575A1
公开(公告)日:2005-10-20
A recording ink comprising a colorant dispersible in water, a humectant, a surfactant, and a wetting agent, wherein the rate of viscosity increase associated with evaporation of moisture in the recording ink is 5.0 mPa·s/% or less while the evaporated moisture content is less than 30% by weight based on the whole weight of the recording ink, the rate of viscosity increase associated with evaporation of moisture exceeds 50 mPa·s/% while the evaporated moisture content is 30 to 45% by weight, and the average particle size of the colorant in the recording ink is less than five times the average particle size of the colorant in the initial recording ink, and is 0.8 μm or less, at the stage of the recording ink when the rate of viscosity increase amounts to 50 mPa·s/%, wherein the rate of viscosity increase associated with evaporation of moisture (mPa·s/%) is defined as the increment of viscosity (mPa·s) versus the increment of evaporated moisture content (%).
一种记录墨水,由可分散于水的着色剂、保湿剂、表面活性剂和润湿剂组成,其中与记录墨水中水分蒸发相关的粘度增加率为 5.0 mPa-s/%或更低,而蒸发的水分含量小于 30% (按记录墨水的总重量计);与水分蒸发相关的粘度增加率超过 50 mPa-s/%,而蒸发的水分含量为 30% 至 45% (按重量计);记录墨水中着色剂的平均粒径小于初始记录墨水中着色剂平均粒径的五倍,且为 0.当记录墨水的粘度增加率达到 50 mPa-s/% 时,记录墨水的粘度增加率(mPa-s/%)定义为粘度增量(mPa-s)相对于蒸发水分含量增量(%)。