Image producing apparatus and image producing method

摘要

A control signal is generated, so that if dots, which are formed in a transverse direction across a recording medium, are classified into plural groups depending on a plurality of timings, then preceding dots, which belong to a group having an earliest timing, are formed in a pale color. A head drive circuit controls a recording head based on the generated control signal.

主权项

1. An image producing apparatus comprising:
a recording head for ejecting ink droplets to form dots in a plurality of colors having different shades on a recording medium; a head drive circuit for controlling the recording head based on a control signal to successively form the dots at a plurality of timings on the recording medium, to thereby generate image arrays in a transverse direction across the recording medium while the recording medium is moved in a feed direction with respect to the recording head; and an image processor for generating the control signal, which is supplied to the head drive circuit, from an input image signal, so that if the dots formed along the transverse direction are classified into plural groups depending on the plurality of timings, then preceding dots, which belong to a group having an earliest timing, are formed in a pale color, wherein the image processor comprises:
a halftoning processor for performing a halftoning process on the input image signal to generate an image dot signal; anda preceding dot signal generator for generating a preceding dot signal representing information concerning the preceding dots based on the input image signal, wherein the control signal includes the image dot signal generated by the halftoning processor and the preceding dot signal generated by the preceding dot signal generator, and wherein the preceding dot signal generator generates the preceding dot signal, so as to form the preceding dots at positions identical or adjacent to dots in a deep color, in a density gradation range that is equal to or greater than a preset threshold value.