US Patent 7722272 Pen-like device having inkjet printer

A pen-like device which has a tubular body containing a nib configured to retract into the tubular body when pressed upon print media, an ink supply having a tube defining a plurality of internal chambers containing respective ink, and ink ejection nozzles in fluid communication with the ink supply. The ink ejection nozzles are configured to print ink upon the print media responsive to the retraction of the nib.