Force adjustment in impact printers

Details Force adjustment in impact printers Force adjustment in impact printers

B - Operations, Transporting

41

G

101/98

B41G 1/02 (2006.01)

Patent

CA 1037776

FORCE ADJUSTMENT IN IMPACT PRINTERS ABSTRACT OF THE DISCLOSURE A plurality of self-restoring equally spaced apart print hammers selectively are driven lineally toward a printing position by continuously rotating impellers having equiangularly spaced radial impelling elements. Each impeller is effective through the agency of a rockable interponent, which is selectively elevated into the path of associated impelling elements upon latch- ing of the armature of an electromagnet, for transmitting impeller force to a corresponding print hammer. An elastomeric bumper, disposed in the path of the print hammers, dampens printing force on dies, which are conveyed past said hammers for printing, in equally spaced relationship different from the spacing of said hammers. Each die, when at a printing station, is aligned with a print hammer but spaced therefrom a distance inversely propor- tional to its printing area for producing copy of uniform intensity. - 1 -

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