US 12,291,040 B2
Image formation device
Yusuke Kuramochi, Tokyo (JP)
Assigned to Konica Minolta, Inc., Tokyo (JP)
Appl. No. 18/012,156
Filed by Konica Minolta, Inc., Tokyo (JP)
PCT Filed Jun. 24, 2020, PCT No. PCT/JP2020/024892
§ 371(c)(1), (2) Date Dec. 21, 2022,
PCT Pub. No. WO2021/260862, PCT Pub. Date Dec. 30, 2021.
Prior Publication US 2023/0256750 A1, Aug. 17, 2023
Int. Cl. B41J 2/18 (2006.01); B41J 2/175 (2006.01)
CPC B41J 2/18 (2013.01) [B41J 2/175 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
an inkjet head;
an ink reservoir that stores ink circulating between the inkjet head and the ink reservoir;
a pressure generating unit that communicates with the inkjet head and generates a first pressure such that an internal pressure of the ink reservoir becomes the first pressure;
a first fluid resistor that gives resistance to a fluid flowing through a fluid communication path between the ink reservoir and the pressure generating unit such that the internal pressure of the ink reservoir becomes a second pressure;
an atmosphere communication path that is connected to the ink reservoir and is communicable with an atmosphere; and
a valve that opens and closes the atmosphere communication path.