Data recorder with portable cartridge

摘要

A data recorder is provided including a removable cartridge which carries both a sales form and an underlying log sheet. The fixed and variable data are imprinted by reciprocation of a platen carriage, with return of the carriage to the home position causing ejection of the credit card and loading of a stored energy mechanism. When the sales form is removed, the stored energy mechanism is released, whereby the log sheet is incrementally advanced to the next position.