Array type inkjet printer with multi-pass structure and method of compensating an irregular nozzle defect thereof

A method of printing using an array type inkjet printer, which prints printing data in a plurality of ink colors using a nozzle selection pattern of ink discharge, the method comprising:

• arranging, as part of the nozzle selection pattern, a plurality of ink dots per color in a zigzag shape over a predetermined ink scattering area;
• and
• controlling discharge of ink from a nozzle in the inkjet printer according to the arrangement of dots in the nozzle selection pattern.

An array type inkjet printer, which prints printing data in a plurality of ink colors using a nozzle selection pattern of ink discharge, the array type inkjet printer comprising:

• a scattering portion to provide the nozzle selection pattern by arranging a plurality of ink dots per color such as to arrange at least one dot in left and right diagonal directions around a dot to be printed in a zigzag shape;
• and
• a head controller to control discharge of ink from a nozzle in the inkjet printer according to the arrangement of dots in the nozzle selection pattern.

The array type inkjet printer as claimed in 13, further comprising:

• dispersion portion to rearrange the dots arranged by the scattering portion by randomly dispersing the dots over an ink scattering area.

A method of printing data in a multi-pass manner using a plurality of ink colors and a nozzle selection pattern having a plurality of ink dots per color, the method comprising:

• substantially linearly aligning the dots in each the plurality of dots along a dimension of a predetermined ink scattering area:
• and
• arranging each of the plurality of dots per color in the nozzle selection pattern in a manner whereby dots in each of the plurality of dots are arranged in a zigzag shape along the dimension of the ink scattering area instead of the substantially linear alignment.