Determining adjustment value for recording position deviation at printing using a plurality of kinds of inspecting patterns

A printing device for printing images by ejecting ink drops from nozzles and depositing the ink drops on a print medium to form dots, comprising:

• a plurality of monochromatic nozzle groups for ejecting ink drops of mutually different single colors, respectively;
• a main scanning unit configured to perform main scanning by moving the plurality of monochromatic nozzle groups and/or the print medium;
• an input unit configured to receive data input from outside;
• and
• a control unit configured to control printing, the control unit comprises:
• a first patch-forming unit configured to form a plurality of first color patches on a print medium with dots composed of two or more types of ink using a plurality of auxiliary adjustment values, respectively, the plurality of first color patches being designed to reproduce mutually identical colors;
• a second patch-forming unit configured to form a second color patch on a print medium using dots composed of two or more types of ink in a different color and/or different printing scheme from that of the plurality of first color patches;
• and
• an adjustment value storage unit configured to store an adjustment value selected from the plurality of auxiliary adjustment values and entered into the input unit on the basis of the plurality of first color patches and the second color patch.

A computer program product designed to allow misalignment verification patterns for determining an adjustment value that can be used to reduce dot formation misalignments during printing to be formed by a computer comprising a print unit comprising a plurality of monochromatic nozzle groups for ejecting ink drops of mutually different colors, wherein the computer program product is such that the adjustment value is designed to reduce dot formation misalignments in a direction of main scanning during a process in which images are printed by depositing ink drops on a print medium and forming dots while main scanning is performed to move the plurality of monochromatic nozzle groups and/or the print medium;

• a computer-readable medium;
• and
• computer programs stored on the computer-readable medium;
• and
• the computer programs comprises:
• a first program for causing the computer to form a plurality of first color patches on a print medium with dots composed of two or more types of ink for a plurality of auxiliary adjustment values, respectively the plurality of first color patches being designed to reproduce mutually identical colors;
• a second program for causing the computer to form a second color patch on a print medium using dots composed of two or more types of ink in a different color and/or different method from that of the plurality of first color patches;
• and
• a third program for causing the computer to store the adjustment value selected from the plurality of auxiliary adjustment values and entered into an input on the basis of the plurality of first color patches and the second color patch.