| Patent application number | Description | Published |
|---|
| 20110279555 | FLUID DISTRIBUTION SYSTEM HAVING FLUID FLOW RESTRICTION - A fluid distribution system having a first fluid container having a fluid outlet, a second fluid container having a fluid inlet, a fluid line interconnecting the outlet of the first container and the inlet of the second container, an inverted umbrella valve between the fluid line and the inlet, the valve arranged to allow fluid flow from the first container to the second container via the fluid line and a restrictor for restricting the allowed fluid flow through the fluid line. | 11-17-2011 |
| 20110279557 | Fluid Distribution System for Pressure Control at Printhead - A fluid distribution system for a printhead. The system having a first fluid container a fluid connector for connection to a fluid input of the printhead; and a second fluid container connected between the first container and the connector for delivering fluid from the first container to the connector, wherein the second container is located relative to the first container and the connector so that a fluid pressure difference between fluid contained within the second container and fluid at the connector is independent of the amount of fluid contained within the first container. | 11-17-2011 |
| 20110279558 | METHOD OF CONTROLLING FLUID PRESSURE AT PRINTHEAD - A method of controlling fluid pressure at a printhead with a fluid distribution arrangement, the method having providing the fluid distribution arrangement with a first fluid container, a fluid connector for connection to a fluid input of the printhead, and a second fluid container connected between the first container and the connector for delivering fluid from the first container to the connector and locating the second container relative to the first container and the connector so that a fluid pressure difference between fluid contained within the second container and fluid at the connector is independent of the amount of fluid contained within the first container. | 11-17-2011 |
| 20110279559 | PRINTING SYSTEM HAVING PRESSURE CONTROL AT PRINTHEAD - A printing system having a first fluid container, a printhead and a second fluid container connected between the first container and the printhead for delivering fluid from the first container to the printhead, wherein the second container is located relative to the first container and the printhead so that a fluid pressure difference between fluid contained within the second container and fluid at the printhead is independent of the amount of fluid contained within the first container. | 11-17-2011 |
| 20110279560 | METHOD OF DISTRIBUTING FLUID PRESSURE IN PRINTING SYSTEM - A method of distributing fluid pressure in a printing system, the method having providing the printing system with a first fluid container, a printhead having fluid ejection nozzles, and a second fluid container connected between the first container and the printhead for delivering fluid from the first container to the printhead and locating the first container above the printhead and the second container and locating the second container below the printhead such that negative fluid pressure is provided at the nozzles of the printhead and positive fluid pressure is provided at the second container. | 11-17-2011 |
| 20110279599 | FLUID DISTRIBUTION SYSTEM HAVING FOUR-WAY VALVE - A fluid distribution system for a printhead, the system having a fluid container fluidically interconnected with the printhead via a closed fluid flow loop, a bypass fluid path bypassing the printhead on the closed loop, a gas vent on the closed loop and a four-way valve on the closed loop for selectively allowing fluid flow along the closed loop via the printhead and the bypass path and venting of gas in the closed loop via the gas vent. | 11-17-2011 |
| 20110279603 | SYSTEM FOR PRIMING AND DE-PRIMING PRINTHEAD - A system for priming and de-priming a printhead, the system having a fluid container fluidically interconnected with the printhead via a closed fluid flow loop, a gas inlet on the closed loop and a valve on the closed loop for selectively allowing gas to enter the closed loop via the gas inlet, and a pump on the closed loop, wherein the pump is operational to draw fluid from the container in a first direction around the closed loop to prime the printhead with fluid from the container, and the vent is operational to cause fluid in the closed loop and the printhead to de-prime to the container in a second direction around the closed loop. | 11-17-2011 |
| 20110279604 | SYSTEM FOR FLUSHING PRINTHEAD AND PRINTHEAD BYPASS - A fluid distribution system for a media width printhead, the system having a fluid container having a gas vent; a first fluid path interconnecting the container and a first fluid port at one longitudinal end of the media width of the printhead, a second fluid path interconnecting the container and a second fluid port at the other longitudinal end of the media width of the printhead, a third fluid path interconnecting the first and second paths, pump on the second path, the pump being operational to draw fluid from the container through the first and second paths via the printhead and via the third fluid path to flush gas in the paths to the container for venting via the gas vent. | 11-17-2011 |
| 20110279605 | PRINTING SYSTEM HAVING VALVED INK AND GAS DISTRIBUTION FOR PRINTHEAD - A printing system having a media width printhead, a plurality of fluid containers fluidically interconnected with the printhead via a respective plurality of fluid tubes each defining an individual closed fluid flow loop, a first multi-channel valve arrangement for selectively allowing fluid flow along each closed loop via the printhead by selectively moving a pinch element into and out of pinching contact with the fluid tubes so as to respectively block and allow fluid flow through the fluid tubes, a plurality of gas vents, each gas vent being associated with a respective one of the closed loops and a second multi-channel valve arrangement for selectively allowing venting of gas in each closed loop via the gas vents. | 11-17-2011 |
