Patent ID: 9597887
Date: 2017-03-21
CPC Classifications: B41J

Claim:
1. A pen housing to provide ink to a printer, the pen housing, comprising: a first chamber including a first aperture and a second aperture, the first aperture to be coupled to an ink supply; a second chamber fluidly coupled to the first chamber at the second aperture, the second aperture to flow ink from the first chamber to the second chamber, the second chamber to flow ink to a printhead of the printer; a filter to cover the second aperture, the filter to deter contaminants from passing from the first chamber to the second chamber, the filter to deter gas from flowing from the second chamber to the first chamber; and a third chamber including a first regulator and a second regulator, the first regulator to control fluid flow between the second chamber and the third chamber, the second regulator to control fluid flow between the third chamber and the first chamber, the first regulator to actuate to enable gas within the second chamber to flow from the second chamber to the third chamber, the second regulator to actuate to enable the gas received from the second chamber to flow from the third chamber to the first chamber.