A hand held personal digital assistant (PDA) that has a body section housing an information storage means, display means joined to the body section by a hinge connection and a print engine with a printhead and a print roll cartridge that has a cylindrical former defining ink reservoirs for storing respective types of ink and bearing a wound length of print media on which ink stored in the ink reservoirs is printed by the printhead. The cylindrical former has a longitudinal axis and the hinge connection has a hinge axis, the longitudinal axis and the hinge axis being collinear for compact incorporation of the print roll cartridge into a PDA.