초록 ▼

The invention relates to a method of guiding a web of paper or foil material in a web-guiding device, such web having print marks applied to it at least over stretches of the web, as well as to such a web-guiding device with a correcting device, the latter being adjustable when the center of the web

The invention relates to a method of guiding a web of paper or foil material in a web-guiding device, such web having print marks applied to it at least over stretches of the web, as well as to such a web-guiding device with a correcting device, the latter being adjustable when the center of the web runs off course and with a controlling system connected to an edge-sensing system, whereby the position of the print marks relative to an imaginary guide line is controllable over stretches of the web carrying print marks, and additional correction relating to the latter can be made, if required. According to the invention, print marks signals are produced by means of a print mark sensor and linked with the correction signals of the edge-sensing system, with priority of the print mark signals.

대표청구항 ▼

In a method of guiding a moving web of material having print marks disposed at least over stretches of the web in a web guiding device of the type including the steps of adjusting the direction of the web if the center of the web runs off course relative to a nominal running line using a correcting

In a method of guiding a moving web of material having print marks disposed at least over stretches of the web in a web guiding device of the type including the steps of adjusting the direction of the web if the center of the web runs off course relative to a nominal running line using a correcting device, monitoring the location of an edge of the web using an edge-sensing means, and providing edge location signals to a control system for the correcting device, the improvement comprising the steps of monitoring the relative position of the print marks with respect to an imaginary guide line and producing print mark signals by means of a print mark sensor, and providing said print mark signals and said edge location signals of the edge sensing means to said correcting device, with said print mark signals having command priority over said edge location signals for adjusting the alignment of said web via said control system.