HAND-HELD INK JET PEN

摘要

Hand-held ink jet pen having an ink reservoir, a printhead and a power source. The ink jet pen having a surface contact sensor and an override jetting button. The surface contact sensor provides a signal to the printhead when the printhead is in close proximity to or in contact with the substrate. The override jetting button provides ejection of ink regardless of the signal of the surface contact sensor. Hand-held ink jet pen having a removable printhead cap. Printhead cap has an absorbent pad adapted for maintenance of the printhead.