An electronic checkbook (10) is provided for printing checks. electronic checkbook (10) is of a hand-held size and operates on two AAA batteries. An on/off switch (30) which includes a needle valve (410) controls ink flow. A print cap switch (26) is also provided for rugged applications. Checks are advanced...http://www.google.fr/patents/US5475403?utm_source=gb-gplus-shareBrevet US5475403 - Electronic checking with printing
