Pocket-sized check writing device with check form

In a pocket-sized cheque writing device having a means for positioning a cheque form in a writing position, a plurality of non-impact mosaic writing heads for reproducing alpha-numeric symbols positioned with respect to said writing position and a manually operable alpha-numeric keyboard for actuating each of said writing heads individually by means of a control unit, the improvement comprising:

• each of said plurality of writing heads being the size of a single character, being independently controllable and addressable, and being immovably disposed within said device to register with one of a plurality of predetermined cheque writing locations of said cheque form with a one to one relationship being established between each of said writing heads and each of said check writing locations;
• and
• said control unit being mechanically arranged and electrically connected between said keyboard and said plurality of writing heads in order to successively provide an association of said keyboard with each one of said plurality of writing heads.