from the chip 12 it should be appreciated in this regard that wheel 18 is riding upon the print media 22 to effect wheel rotation in the direction indicated by arrow w in fig6 when the printer housing 10 is lifted away from the print media 22 rotation w ceases whereupon resilience of the capper arm 13 pushes the peg 20 back to the position depicted at fig5 and at the same time returns the elastomeric pad 16 to seal the print chip 12 as shown in fig5 in a fourth embodiment of the capping device shown in fig8 and 9 there is provided an internally driven camshaft 24 including an eccentric cam 23 camshaft 24 might be selectively rotated by means of an electric motor for example in this embodiment the capper arm 13 is mounted to a pivot 14 and is biased by an integral spring 25 against the eccentric cam 23 that is the integral spring 25 biases the leg portion 28 of the capper arm 13 to the position depicted in fig8 whereat the elastomeric pad 16 seals over chip 12 when the camshaft 24 is rotated such that the eccentric cam rotates into the position depicted in fig9 the capper arm 13 deforms integral spring 25 while the elastomeric pad 16 moves away from the print chip 12 in fig1 and 11 of the accompanying drawings there is depicted a fifth embodiment of the capping device wherein the capper arm 13 is activated by an internal solenoid 26.