A development study of the print mechanism on the ibm 1403 chain printer

This paper describes the development of a print hammer mechanism. The parameters controlled are printing force and energy to produce the required density on multiple-part forms; repeatability of hammer flight time for alignment of adjacent printed characters; and the duration of impact between hammer, ribbon, multiple form, moving type, and platen to eliminate smudged printing. Results of this investigation serve as the basis for continuing studies in impact printing.