Printhead and method of printing

A printhead assembly for printing on a medium which advances in a media advance direction, said printhead assembly being static when printing and comprising at least two printhead modules offset in the media advance direction, at least one of the printhead modules movable along a width direction perpendicular to the media advance direction to adjust the printhead assembly to print on any position of the print medium along the width of the image, wherein at least two of the printhead modules are statically disposed substantially completely overlapping in the width direction during a same printing pass.

A printhead for a printer in which a print medium advances in a media advance direction, said printhead being static when printing the medium and having an adjustable length in a width direction that is perpendicular to said media advance direction, comprising:

• a mechanism that determines a width of an image to be printed and adjusts the length of the printhead in said width direction to the width of the image, such that the adjusted printhead is configured to print on any position of the print medium along the width of the image;
• and
• first and second printhead modules in the printhead statically positioned to overlap in the width direction such that a properly-functioning nozzle of the first printhead module has the same position in the width direction as an improperly-functioning nozzle of the second printhead module during a same printing pass.