Abstract: A method for cleaning an ink jet imaging device, the ink jet imaging device including a main ink supply channel including an entrance side for supplying ink, a first ink channel including a first pressure chamber fluidly connected to a first nozzle; a first actuator associated with the first pressure chamber, the first ink channel being in fluid connection with the main ink supply channel and defining a first ink path from the entrance side of the main ink supply channel to the first nozzle and having a first length L1; a second ink channel including a second pressure chamber fluidly connected to a second nozzle; and a second actuator associated with the second pressure chamber, the second ink channel being in fluid connection with the main ink supply channel and defining a second ink path from the entrance side of the main ink supply channel to the second nozzle and having a second length L2, wherein L2>L1.

Abstract: A printer includes a print station; a media transport mechanism arranged for conveying print media on a transport path past the print station, the transport mechanism having a support surface for supporting the media; and a vacuum device arranged for attracting the media against the support surface on a section of the transport path downstream of the print station. The vacuum device is divided, in the direction along the transport path, into at least two segments in which the media are attractable with different non-zero suction pressures.

Abstract: A filter device for filtering ink for delivery to at least one drop forming unit of a print-head in a printing apparatus includes: an inlet for admission of ink to the filter device; a first filter member adjacent the inlet for filtering the ink as the ink enters the filter device; a collection chamber arranged below the first filter member for collecting the ink after the ink passes through the first filter member; and an outlet for delivering the ink from the collection chamber to a reservoir for supplying the at least one drop forming unit. The collection chamber includes at least one flow directing member defining at least one predetermined flow path, especially at least one circuitous or indirect flow path, for the ink through and/or around the collection chamber to the outlet.

Abstract: A filter device for filtering ink for delivery to at least one drop forming unit of a print-head in a printing apparatus includes: an inlet for admission of ink to the filter device; a first filter member adjacent the inlet for filtering the ink as the ink enters the filter device; a collection chamber arranged below the first filter member for collecting the ink after the ink passes through the first filter member; and an outlet for delivering the ink from the collection chamber to a reservoir for supplying the at least one drop forming unit. The collection chamber includes at least one flow directing member defining at least one predetermined flow path, especially at least one circuitous or indirect flow path, for the ink through and/or around the collection chamber to the outlet.

Abstract: The present invention relates to an assembly of a print head and a maintenance unit. The present invention further relates to a method for the use of an assembly of a print head and a maintenance unit.

Abstract: The present invention relates to an assembly of a print head and a maintenance unit. The present invention further relates to a method for the use of an assembly of a print head and a maintenance unit.