B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
342/39, 341/47,
B41F 33/00 (2006.01) B65H 23/02 (2006.01) B65H 23/038 (2006.01)
Patent
CA 1152190
WEB GUIDING SYSTEM Abstract of the Disclosure A system for positioning a web of material as it enters and passes through a course for treating the web, as in a printing press, is disclosed. The edges of the web are scanned by infrared sensing devices which are connected by various electrical circuits to a tilt mechanism contacting the web, and both the scanning devices and the tilt mechanism may be synchronized, or manually controlled, to direct the web through the press. A broad diameter channel of infrared radiation is utilized in the scanners. The relationship of the web to its desired path and the correcting actions of the system may be continuously read in terms of actual deviation changes on a display panel. The tilt rollers and the scanners may be automatically centered on a fixed reference point in preparing the web for i s course through the press. The system includes correlation of the tramming of the tilt rollers to con- tinued position sensing of the web by the infrared scanners.
343729
Baldwin-Korthe Web Controls Inc.
Smart & Biggar
LandOfFree
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