초록 ▼

A printing press is provided which may be adapted to print in multiple colors on paper or film. The press can then laminate film-to-film, laminate film-to-paper, or apply a PVA adhesive or cold seal adhesive to the substrate in line. The press is provided with a CPU and a plurality of motors each of

A printing press is provided which may be adapted to print in multiple colors on paper or film. The press can then laminate film-to-film, laminate film-to-paper, or apply a PVA adhesive or cold seal adhesive to the substrate in line. The press is provided with a CPU and a plurality of motors each of which drives an individual roller, i.e. a printing station roller, a nip, or the rewind roller, and a plurality of sensors which monitor the speed of the laminate and substrate, the tension of the laminate in substrate in various places. In response to the signals received from the sensors, the CPU individually controls the motors to maintain the printing stations in registry with each other.

대표청구항 ▼

[ I claim:] [1.] A printing press capable of printing in a plurality of colors and of printing on a paper or film substrate, the printing press including:a main unwind roller about which the substrate to be printed is wound;a main nip through which the substrate passes, the nip being directly driven

[ I claim:] [1.] A printing press capable of printing in a plurality of colors and of printing on a paper or film substrate, the printing press including:a main unwind roller about which the substrate to be printed is wound;a main nip through which the substrate passes, the nip being directly driven by a main nip motor;a substrate printing area comprising a plurality of print stations, each said print station having an impression cylinder, a printing cylinder in rolling contact with the impression cylinder to be driven thereby, and a motor which directly drives the impression cylinder;a rewind roller about which the printed substrate is wound;a rewind motor which drives the rewind roller; andalignment means for maintaining the printing stations in registry with each other to substantially prevent the printing of blurred multi-colored images; the alignment means includinga central processing unit;a speed monitor for monitoring the speed of the substrate between the main nip and a first of the plurality of printing stations; said speed monitor generating a signal indicative of the speed of the substrate, said speed signal being received by the central processing unit; andmeans for monitoring the rotational position of the at least one of the cylinders of each printing station, said cylinder monitoring means generating a signal indicative of the rotational position of the cylinder of each printing station, said signal being received by said central processing unit;said central processing unit individually controlling said main nip motor and each printing station motor to maintain said printing stations in alignment.