High speed serial printer with plural hammers

Claim 2

In a high speed on-the-fly serial printer, wherein character printing is accomplished one character at a time along a succession of printing positions and having a printing carriage movable from one printing position to the next, the improvement comprising: a plurality of printing hammers mounteD on said printing carriage each having a width greater than half the pitch between adjacent printing positions, and being overlapped in part so as to be opposite two adjacent printing position spacings, and control means for selectively actuating either one or another of said hammers in correspondence with the relative position of said carriage with respect to a printing position, for accomplishing printing in said print position.

Claim 3

In a high-speed on-the-fly serial printer, wherein character printing is accomplished one character at a time along a succession of printing positions defining a print line and having a printing carriage movable from one printing position to the next, the improvement comprising: a pair of printing hammers, each having a width greater than the pitch between adjacent printing positions and being overlapped in part in the direction of the print line, said hammers being mounted on said printing carriage; detecting means for detecting the position of said printing carriage with respect to one of said printing positions and to deliver corresponding signals representing said printing positions and control means responsive to said signals for selectively actuating one or the other of said printing hammers for accomplishing printing in said one printing position.

Claim 4

In a high-speed on-the-fly serial printer, wherein character printing is accomplished one character at a time along a succession of printing positions defining a print line and having a printing carriage movable from one printing position to the next, the improvement comprising: a pair of printing hammers, each having a width greater than the pitch between adjacent printing positions and being overlapped in part in the direction of the print line, said hammers being mounted on said printing carriage; detecting means for detecting the position of said printing carriage with respect to one of said printing positions and to deliver corresponding signals representing said printing positions and control means responsive to said signals for selectively actuating one or the other of said printing hammers for accomplishing printing in said one printing position.

Claim 5

In a high-speed on-the-fly synchronous serial printer wherein the character printing is accomplished one character at a time along a succession of printing positions defining a print line and having a printing carriage movable from one printing position to the next with a movement in fixed relationship with the rotation of a type-carrying member, the improvement comprising: a pair of printing hammers, each having a width greater than one-half the pitch between adjacent printing positions and being overlapped in part in the direction of the print line, said hammers being on said printing carriage; detecting means to detect the position of rotation of said type-carrying member with respect to a reference point and to deliver corresponding signals; and control means responsive to said signals to selectively actuate one or the other of said printing hammers.

Claim 6

In a high-speed on-the-fly synchronous serial printer wherein the character printing is accomplished one character at a time along a succession of printing positions defining a print line and having a printing carriage movable from one printing position to the next with a movement in fixed relationship with the rotation of a type-carrying member, the improvement comprising: a pair of printing hammers, each having a width greater than one-half the pitch between adjacent printing positions and being overlapped in part in the direction of the print line, said hammers being on said printing carriage; detecting means to detect the position of rotation of said type-carrying member with respect to a reference point and to deliver corresponding signals; and control means responsive to said signals to selectively actuate one or the other of said printing hammers.

Claim 7

In a printer having a carriage movable parallel to a print line comprising spaced apart image receiving locations, and a character member mounted on said carriage comprising a rotatable type-carrying member which presents characters sequentially and cyclically proximate to said print line, the combination comprising: a plurality of printing hammers mounted on said carriage, each having a width greater than half the pitch between adjacent image receiving locations and being overlapped in part so as to be opposite two adjacent image receiving location spacings, each of said printing hammers being responsive to a respective control signal received thereby to cooperate with the one of said characters proximate to one of said character image receiving locations to form an image of said one character on said print line, detecting means for detecting the position of said carriage relative to said one location and generating a corresponding signal and controllable print command control means for receiving said generated signal and delivering a selected one of said control signals in correspondence with the relative position of said carriage with respect to said one character image receiving location.

Claim 8

In a printer having a carriage movable parallel to a print line comprising spaced apart image receiving locations, and a character member mounted on said carriage comprising a rotatable type-carrying member which presents characters sequentially and cyclically proximate to said print line, the combination comprising: a plurality of printing hammers mounted on said carriage, each having a width greater than half the pitch between adjacent image receiving locations and being overlapped in part so as to be opposite two adjacent image receiving location spacings, each of said printing hammers being responsive to a respective control signal received thereby to cooperate with the one of said characters proximate to one of said character image receiving locations to form an image of said one character on said print line, detecting means for detecting the position of said carriage relative to said one location and generating a corresponding signal and controllable print command control means for receiving said generated signal and delivering a selected one of said control signals in correspondence with the relative position of said carriage with respect to said one character image receiving location.