Apparatus and method for performing mechanical printhead alignment in an imaging apparatus
View Patent ↗An imaging apparatus includes a printhead carrier configured for mounting a printhead cartridge and a cam rotatably coupled to the printhead carrier, the cam having a cam surface positioned opposite the datum pad, the cam surface being positioned for direct contact with the datum pad. A rotation of the cam causes the cam surface to translate the printhead along the media feed direction.
1. A method for performing an alignment of a first printhead relative to a second printhead in an imaging apparatus along a media feed direction, comprising:
sensing a misalignment of said first printhead relative to said second printhead, said first printhead and said second printhead being mounted in a printhead carrier of said imaging apparatus, said printhead carrier being configured for reciprocation in a main scan direction, wherein said sensing said misalignment is performed using an auto-alignment sensor that senses a diminishing effective nozzle overlap area of a pattern generated by the first printhead and the second printhead mounted on the printhead carrier of said imaging apparatus;
determining a mechanical adjustment of a position of said first printhead relative to said second printhead based on said misalignment; and
directing a user to move a lever of a media feed direction adjuster on said printhead carrier to make said mechanical adjustment based on said misalignment, wherein said mechanical adjustment translates said printhead along said media feed direction relative to said other printhead.
2. The method of claim 1 , wherein an amount of said mechanical adjustment is determined based on said misalignment.
3. The method of claim 1 , wherein said mechanical adjustment translates said printhead along said media feed direction in increments of less than one pel.
4. The method of claim 1 , wherein said mechanical adjustment translates said printhead along said media feed direction in increments of one half pel.