Determination of adjustment value for recording misalignment during printing with two types test patterns

A printing device for depositing ink drops on print medium to form dots comprising:

• a plurality of single color nozzle groups for ejecting ink drops having mutually different colors;
• a main scanning unit configured to move at least one of the plurality of single color nozzle groups and the print medium in a main scan direction;
• an input unit configured to receive data input from the outside;
• and
• a control unit configured to control printing;
• the control unit comprising:
• a first pattern forming unit configured to form on a print medium a first misalignment verification pattern containing a plurality of first sub-patterns associated with first possible adjustment values, respectively, contemplated for use to reduce dot formation misalignments in a direction of main scanning;
• a second pattern-forming unit configured to form on a print medium a second misalignment verification pattern containing a plurality of second sub-patterns associated with second possible adjustment values, respectively;
• a first adjustment value storage unit configured to store a first adjustment value for a first print mode selected from the first possible adjustment values and entered via the input unit;
• and
• a second adjustment value storage unit configured to store a second adjustment value for a second print mode selected from the second possible adjustment value and entered via the input unit,
• wherein, a form of the second misalignment verification pattern is different from a form of the first misalignment verification pattern.

A computer-readable medium containing a computer program for forming misalignment verification patterns that are used when adjustment values are determined in a computer with a printing device equipped with a plurality of single color nozzle groups for ejecting ink drops having mutually different colors in order to reduce dot formation misalignments in a direction of main scanning, during a printing process, in which ink drops are deposited and dots are formed on a print medium while at least one of the plurality of single color nozzle groups and the print medium is moved in a main scan direction, the computer-readable medium containing a computer program causing the computer to implement the functions of:

• forming on a print medium a first misalignment verification pattern containing a plurality of first sub-patterns associated with first possible adjustment values, respectively, contemplated to reduce dot formation misalignments in the direction of main scanning;
• forming on a print medium a second misalignment verification pattern containing a plurality of second sub-patterns associated with second possible adjustment values, respectively;
• receiving and storing a first adjustment value for a first print mode select from the first possible adjustment values;
• and
• receiving and storing a second adjustment value for a second print mode selected from the second possible adjustment values,
• wherein, a form of the second misalignment verification pattern is different from a form of the first misalignment verification pattern.

A method for setting adjustment values designed to reduce dot formation misalignment, the method comprising:

• selecting a first adjustment value for a first print mode from a plurality of first adjustment values using a first misalignment verification pattern;
• and
• selecting a second adjustment value for a second print mode from a plurality of second adjustment values using a second misalignment verification pattern,
• wherein, a form of the second misalignment verification pattern is different from a form of the first misalignment verification pattern,
• wherein the first print mode is selected when a higher accuracy of dot formation positions in a direction of main scanning is required.

A method for setting adjustment values designed to reduce dot formation misalignment, the method comprising:

• selecting a first adjustment value for a first print mode from a plurality of first adjustment values using a first misalignment verification pattern;
• and
• selecting a second adjustment value for a second print mode from a plurality of second adjustment values using a second misalignment verification pattern,
• wherein, a form of the second misalignment verification pattern is different from a form of the first misalignment verification pattern,
• wherein the second print mode is selected when a higher uniformity in coloring is required.

A printing device for depositing ink drops on a print medium, comprising:

• a control unit configured to control printing;
• the control unit comprising:
• a first pattern forming unit configured to form a first misalignment verification pattern containing a plurality of first sub-patterns associated with first possible adjustment values, respectively;
• a second pattern-forming unit configured to form a second misalignment verification pattern containing a plurality of second sub-patterns associated with second possible adjustment values, respectively;
• a first adjustment value storage unit configured to store a first adjustment value for a first print mode selected from the first possible adjustment values;
• and
• a second adjustment value storage unit configured to store a second adjustment value for a second print mode selected from the second possible adjustment values,
• wherein, a form of the second misalignment verification pattern is different from a form of the first misalignment verification pattern,
• wherein the first print mode is a print mode which is selected when a higher accuracy of dot formation positions in a direction of main scanning is required.

A printing device for depositing ink drops on a print medium, comprising:

• a control unit configured to control printing;
• the control unit comprising:
• a first pattern forming unit configured to form a first misalignment verification pattern containing a plurality of first sub-patterns associated with first possible adjustment values, respectively;
• a second pattern-forming unit configured to form a second misalignment verification pattern containing a plurality of second sub-patterns associated with second possible adjustment values, respectively;
• a first adjustment value storage unit configured to store a first adjustment value for a first print mode selected from the first possible adjustment values;
• and
• a second adjustment value storage unit configured to store a second adjustment value for a second print mode selected from the second possible adjustment values,
• wherein, a form of the second misalignment verification pattern is different from a form of the first misalignment verification pattern,
• wherein the second print mode is a print mode which is selected when a higher uniformity in coloring is required.