US 10,369,802 B2
Ink filter with passive de-aeration
Patrick McAuliffe, North Ryde (AU)
Assigned to Memjet Technology Limited, (IE)
Filed by Memjet Technology Limited, Dublin (IE)
Filed on Jun. 28, 2018, as Appl. No. 16/22,449.
Claims priority of provisional application 62/530,764, filed on Jul. 10, 2017.
Prior Publication US 2019/0009559 A1, Jan. 10, 2019
Int. Cl. B41J 2/175 (2006.01); B41J 2/19 (2006.01); B41J 2/18 (2006.01); B41J 2/195 (2006.01)
CPC B41J 2/17563 (2013.01) [B41J 2/175 (2013.01); B41J 2/17596 (2013.01); B41J 2/18 (2013.01); B41J 2/19 (2013.01); B41J 2/195 (2013.01)] 20 Claims
OG exemplary drawing
11. An inkjet printer comprising:
an ink tank containing ink having a predetermined ink level;
an ink filter positioned below the predetermined ink level; and
an inkjet printhead positioned above the predetermined ink level,
wherein the ink filter comprises:
a filter chamber having a filter inlet port for receiving ink from the ink tank, a filter outlet port for delivering ink to the printhead and a vent port, the vent port being positioned in a roof of the filter chamber;
a filter material positioned between the filter inlet port and the filter outlet port; and
a closed vent chamber connected to the vent port,
and wherein the vent chamber has at least one wall exposed to atmosphere comprised of an air-permeable polymer.