Printing – Stenciling – Stationary-inker machines
Patent
1973-06-28
1976-03-23
Burr, Edgar S.
Printing
Stenciling
Stationary-inker machines
101115, 101126, 101228, 226143, B41F 1524
Patent
active
039453170
ABSTRACT:
Automatic registration of the web of sheet material on a printing cylinder is effected in a silk screen printing apparatus which includes a printing frame reciprocably movable in an impressing and return cycle. A printing cylinder is arranged for carrying a web of sheet material in impression receiving relation to said printing frame during the impression-forming portion of its movement. Web guide rollers are arranged to direct the web to and from said printing cylinder. A first drive arrangement, including a first motor, is connected both to drive the printing frame reciprocably and said printing cylinder unidirectionally in the impression-receiving direction. The printing cylinder is disengaged from the first drive during the reverse travel of the printing frame so that the web is stationary. A second drive arrangement is provided, including a second motor, connected to drive the printing cylinder in a second direction, that is the reverse of the printing direction. A photocell is positioned to scan the web downstream of said printing cylinder and is operable upon said second motor to de-energize the same when said printing cylinder has been reversed to a predetermined position of said web. Indicia carried by said web is sensed by said photocell to effect said de-energization.
REFERENCES:
patent: 1936068 (1933-11-01), Marquardt
patent: 3198114 (1965-08-01), Jones et al.
patent: 3548747 (1970-12-01), D'Amato
patent: 3559568 (1971-02-01), Stanley
patent: 3650207 (1972-03-01), Black
Burr Edgar S.
Suter R. E.
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