Duplicator with web master
AssigneeEdmund W. Nulton
InventorRobert J. Crissy
Life of this patent
Estimating the term…
Abstract
A duplicating method and apparatus in which information is transferred onto a copy web from a master web and a repeat printing roll and in which a common impression cylinder carries the copy web past a pressure roll which cooperates with the impression cylinder for bringing the master web in printing contact with the copy web to print equally spaced indicia from the master web on the copy web and the repeat printing roll cooperates with the impression cylinder for printing repeat indicia on the copy web, and including a sheeter for separating the copy web at spaced lengths, each length including an impression from the master web and an impression from the repeat printing roll.
Claims9
An apparatus for producing individual sheets containing variable information from a master web and repeat information comprising a common impression cylinder for carrying a copy web through at least two printing impressions, a printing cylinder for printing the repeat information on the copy web while the latter is carried on the common impression cylinder, means for separating the copy web at spaced lengths into individual sheets containing printed information from the master web and repeat printed information, positive feed means for feeding the master web toward the copy web while the latter is carried on said common impression cylinder and for feeding the master web at a speed slightly faster than the copy web on said common impression cylinder, a pressure roll for pressing the master web against the copy web while the latter is in contact with the common impression cylinder to transfer information from the master web to the copy web without relative movement between the webs, thereby developing slack in the master web between the pressure roll and the positive feed means, and means automatically relieving the pressure between the common impression cylinder and the pressure roll after each impression to remove the slack developed in the master web.
A method of producing individual sheets containing variable information from a master web and repeat information from a rotating printing cylinder comprising the steps of feeding a copy web onto a common impression cylinder which carries the copy web through at least two printing impressions, printing the repeat information on the copy web while the latter is carried on the common impression cylinder, separating the copy web at spaced lengths into individual sheets containing printed information from the master web and repeat printed information from the printing cylinder, positively feeding the master web toward the copy web while the latter is carried on said common impression cylinder and at a speed slightly faster than the copy web on said common impression cylinder, bringing the master web in pressure contact with the copy web while the latter is in contact with the common impression cylinder to transfer information from the master web to the copy web without relative movement between the webs, thereby developing slack in the master web between the pressure applying and positive feeding steps, and automatically relieving the pressure between the common impression cylinder and the pressure roll after each printing impression to remove the slack developed in the master web.
Dependencies are inferred from the claim text.