A pen-like device includes a tubular body and a replaceable cartridge configured to be received within the body. The cartridge includes an ink supply, in turn, including a tube defining a plurality of internal chambers containing respective types of ink. A stylus nib is configured to retract into the body when pressed upon print media. A printhead is mounted in fluid communication with the ink supply and is configured to print ink upon the print media responsive to retraction of the stylus nib.