Device and method for adjusting a print bar
AssigneeCanon Production Printing Holding B.V.
InventorsFlorian Hitzlsperger, Ulrich Stöckle, Claus Schneider, Christoph Rummelsberger, Alexander Zach
Life of this patent
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Abstract
Provided is a device for adjusting the height of a print bar of an inkjet printing device. The printing device has a cleaning sled for cleaning the one or more print heads of the print bar. A controller including a processor is configured to determine, using a sensor unit, clearance information with regard to the clearance between the cleaning sled and the print bar at different measurement points, and to adjust the height of the print bar depending on the determined clearance information. A precise adjustment of the print bar can thus be effected for a qualitatively high-grade and gentle cleaning.
Claims16
An inkjet printing device comprising:
- a print bar having one or more print heads;
- a cleaning sled for cleaning nozzle plates of the one or more print heads;
- wherein the cleaning sled can be moved along a cleaning direction from a first side of the print bar to a second side of the print bar;
- and
- a controller comprising at least one processor configured to:
- determine, using at least one sensor unit, clearance information with regard to a clearance between the cleaning sled and the print bar at least at two different measurement points along the cleaning direction;
- and
- adjust the clearance between the cleaning sled and the print bar depending on the clearance information, using at least one alignment element,
- wherein
- the one or more print heads of the print bar comprises at least a first print head and a second print head;
- and
- the at least one processor is further configured to:
- determine, using the at least one sensor unit, first clearance information with regard to the clearance between the cleaning sled and a nozzle plate of the first print head;
- determine, using the at least one sensor unit, second clearance information with regard to the clearance between the cleaning sled and a nozzle plate of the second print head;
- and
- detect, on the basis of the first clearance information and the second clearance information, whether the first print head and/or the second print head are incorrectly installed in the print bar.
A method for adjusting a print bar having one or more print heads of an inkjet printing device;
- wherein the printing device comprises a cleaning sled for cleaning nozzle plates of the one or more print heads;
- wherein the cleaning sled can be moved along a cleaning direction from a first side of the print bar to a second side of the print bar, the method comprising:
- determining, using at least one sensor unit, clearance information with regard to a clearance between the cleaning sled and the print bar at least at two different measurement points along the cleaning direction;
- and
- adjusting, using at least one alignment element, the clearance between the cleaning sled and the print bar, depending on the clearance information
- wherein
- the one or more print heads of the print bar comprises at least a first print head and a second print head;
- and
- the method further comprises:
- determining, using the at least one sensor unit, first clearance information with regard to the clearance between the cleaning sled and a nozzle plate of the first print head;
- determining, using the at least one sensor unit, second clearance information with regard to the clearance between the cleaning sled and a nozzle plate of the second print head;
- and
- detecting, on the basis of the first clearance information and the second clearance information, whether the first print head and/or the second print head are incorrectly installed in the print bar.
Dependencies are inferred from the claim text.