Patent ID: 6595613
Filing Date: 2003-07-22
Classification: B41J

Abstract:
A printing system that creates dots on a printing medium in the course of a main scan and thereby prints an image, said printing system comprising:a print head configured to create n variable dots (where n is an integer of not less than 2), which at least partly include dots of an identical ink but different ink quantities, in response to driving signals so as to print an image on a printing medium; a memory configured to store output timings of n driving signals corresponding to the n variable dots to adjust positional misalignments of the n variable dots; a driving signal output unit configured to output at least part of the n driving signals to said print head in the course of the main scan, according to dots to be created in respective pixels; a timing adjustment unit configured to individually adjust the output timings stored in said memory with regard to each identical ink and each of the different ink quantities of the n variable dots; and a test pattern printing unit configured to print a predetermined test pattern, which is set to enable detection of the relative positional misalignment of dots created under different printing conditions, with regard to each of the n variable dots, wherein the printing conditions include printing the same color with different densities.