Electronically controllable pen

摘要

An ink cartridge for a pen-shaped printer is provided. The ink cartridge includes a hollow tube with internal ribs defining elongate ink chambers within the tube for operatively storing ink, and a first end cap for sealing one end of the tube. The first end cap is configured to receive a battery for supplying the printer with electrical energy. The cartridge also includes a second end cap for sealing the other end of the tube, the second end cap being configured to position a printhead of the printer. Also included is a stylus nib and nib cap defining an aperture through which the nib protrudes and through which the printhead operatively prints ink onto a substrate.