Sheet transport position and jam monitor

B - Operations – Transporting – 65 – H

Patent

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Details

B65H 7/02 (2006.01) B41F 21/10 (2006.01) B41F 33/00 (2006.01) B65H 5/12 (2006.01)

Patent

CA 2406107

A sheet transport system (20) comprising: at least one sheet transporter (30- 36) that receives and hands off a sheet being transported by the system so as to transport the sheet from a first position to a second position, wherein the at least one transporter (30-36) comprises at least one orifice (44) through which air is aspirated to create a vacuum that grips a sheet when it is received by the transporter (30-36); a vacuum system coupled to the at least one orifice (44) controllable to aspirate air through the at least one orifice (44) to grip the sheet; at least one vacuum sensor (60) that generates signals responsive to magnitude of vacuum of the at least one orifice (44); and a controller (49) that receives the signals generated by the at least one vacuum sensor (60) and provides a signal indicative of a location of the sheet in the transport system (20) from the signals.

La présente invention concerne un système (20) de transport de feuilles qui comprend: au moins un transporteur (30-36) de feuille qui reçoit et transfère une feuille transportée par ce système de façon à transporter cette feuille d'une première position à une seconde position. Dans ce système, le ou les transporteurs (30-36) comprennent au moins un orifice (44) à travers lequel l'air est aspiré de façon à créer une dépression qui prend une feuille lorsque cette dernière est reçue par ce transporteur (30-36), un système d'aspiration raccordé à cet ou ces orifices (44) commandables de façon à aspirer l'air à travers cet ou ces orifices (44) et prendre la feuille, au moins un capteur (60) d'aspiration générateur de signaux qui réagissent à l'importance de l'aspiration au niveau de cet ou de ces orifices (44), et un contrôleur (49) qui reçoit les signaux générés par ce ou ces capteurs (60) d'aspiration et qui fournit un signal indicatif de la localisation de la feuille dans le système (20) de transport à partir de ces signaux.

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