Patent ID: 6089691
Filing Date: 2000-07-18
Classification: H04N

Abstract:
A printing system with a head for forming at least two types of dots having different hues on an object, said printing system recording a multi-tone image through a distribution of said dots, said printing system comprising:input means for successively inputting multi-color tone signals regarding pixels included in an image to be printed;first dot formation determination means for carrying out multi-valued coding with respect to one type of dots selected among said at least two types of dots having different hues, based on said input tone signal of a color corresponding to said one type of dots, and determining either one of formation and non-formation of said one type of dots;second dot formation determination means for enabling the result of multi-valued coding carried out by said first dot formation determination means to affect a recording density to be realized by another type of dots having a different hue, carrying out multi-valued coding with respect to said another type of dots according to said recording density, and determining either one of formation and non-formation of said another type of dots; andhead drive means for driving said head based on the results of determination by said first dot formation determination means and said second dot formation determination means, thereby actually forming said at least two types of dots having different hues.