Advancing material of indeterminate length – With material-responsive control means – To regulate longitudinal movement of material
Patent
1993-04-05
1996-10-01
Darling, John P.
Advancing material of indeterminate length
With material-responsive control means
To regulate longitudinal movement of material
226118, B65H 2322
Patent
active
055605273
ABSTRACT:
Web compensation loop device for a web of flexible laser printing paper positioned between a paper supply for supplying paper from a box containing the web in a folded condition or from a reel to a variable speed laser printer. Paper is fed to the printer and to compensate for intermittent operation of the laser printer, a support is provided for supporting and moving the web from the box or the paper roll and positioned between the paper storage and supply unit and the printer for supporting one end of the web, the other end of the web being supported by the printer as the paper moves towards the printer while supporting the web therebetween. The web forms a compensation loop between the printer and the web support as the paper forming the web leaves the support and enters the printer. A roller moves the web from the support to the printer and a variable speed motor, responsive to the intermittent operation of the printer and the web compensation loop drives the web moving roller. A detector is provided proximate to the web for transmitting rays to the web and responsive to reflection of the rays from the web for detecting the presence of a predetermined length of the compensation loop and is coupled with the variable speed motor for controlling the speed thereof to provide a feed of the paper in accordance with the intermittent operation of the printer.
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Darling John P.
Industria Grafica Meschi SRL
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