Paper feed control in a printer

Claim 1

A print control system in a printer which performs a printing operation onto a record-receiving medium, said print control system comprising: input means for introducing a print instruction into said print control system; printing means for performing said printing operation onto said record-receiving medium; feed means for shifting said record-receiving medium through said printing means in a predetermined direction for a predetermined distance before and after said printing operation; a print repetition control circuit which enables a predetermined number of successive printing operations by said printing means upon completion of each printing operation; and control means, responsive to said input means, for controlling said printing means and said feed means in said printing operation; said feed means including, drive roller means for engaging and shifting said record-receiving medium through said printing means as said drive roller means rotates, means for rotating said drive roller means only before and after each successive printing operation, said means for rotating holding said drive roller means stationary during each printing operation, pinch roller means in opposing confrontation with said drive roller means for selectively securing said record-receiving medium against said drive roller means in each printing operation, a shaft positioned through the axis of said pinch roller means so that said pinch roller means rotates freely therearound, a solenoid having a reciprocally movable rod, and a rotatable arm engaged with the shaft of said pinch roller means and with a portion of said reciprocally movable solenoid rod, wherein said solenoid is selectively activated by said control means to position said pinch roller means in contact with said record-receiving medium, thereby securing said record-receiving medium against said drive roller means during a printing operation.