Patent ID: 6099105
Filing Date: 2000-08-08
Classification: B41J,H04N

Abstract:
A printing system with a head, which forms at least two different dots having different densities per unit area on an object, for recording a multi-tone image by a distribution of the dots, said printing system comprising:input means for successively receiving a tone signal of each target pixel included in an image to be printed;recording density setting means for specifying a recording density to be realized by at least a selected one of a dot having a higher density per unit area, that is, a higher-density dot, and a dot having a lower density per unit area, that is, a lower-density dot, which are both included in said at least two different dots having different densities, based on the input tone signal;first dot formation determination means for carrying out a multivaluing operation based on the specified recording density, and determining whether or not the selected one of the higher-density dot and the lower-density dot is to be formed;second dot formation determination means for making a result of the multivaluing operation by said first dot formation determination means reflect upon a recording density to be realized by the other one of the higher-density dot and the lower-density dot, causing the other one of the higher-density dot and the lower-density dot to be subjected to a multivaluing operation according to the reflected recording density, and determining whether or not the other one of the higher-density dot and the lower-density dot is to be formed; andhead driving means for driving the head based on results of the determination by said first dot formation determination means and said second dot formation determination means, in order to form said at least two different dots having different densities per unit area.