Hewlett-Packard Development Company, L.p.

Kundan Singh

William Scott Osborne

Paul Mark Haines

Cherng Linn Teo

Wan Xuan Lim

Kiran Kattesomanahalli Shanthamallappa

Sean Bertles

The present disclosure is drawn to an ink supply tank for a printer. The ink supply tank includes a main chamber to supply a printer with ink. The main chamber includes a fill port to receive ink during filling and an exchange port to release the ink. A chamber separator device is configured with a fill surface and a vent port. An overflow chamber can be configured with a vent to pass air into the overflow chamber, a first portion of air in the overflow chamber passes through the vent port of the chamber separator device to a feeder chamber to replace a second portion of ink leaving the ink supply tank to feed a print head and the vent port of the chamber separator device to pass a third portion of ink and a second portion of air from the feeder chamber to the overflow chamber.

Ink supply tanks

In an example, a fluid pump includes a shifter having a first end and pivotable about a second end, a cam rotatably engaged with the shifter, wherein the cam is to rotate about a cam shaft axis if the shifter pivots about the second end, a diaphragm fluidly engaged with a fluid cavity, a collar movable with a cam surface of the cam, wherein the collar is to compress the diaphragm so as to decrease the volume of the fluid cavity, a fluid inlet having a one-way inlet valve to only allow fluid into the fluid cavity, and a fluid outlet having a one-way outlet valve to only allow fluid out of the fluid cavity, wherein the one-way outlet valve is to allow fluid out of the fluid cavity upon the volume of the fluid cavity being decreased.

Fluid pumps with shifters

Ink container cap

Examples of vacuum operated pumps are described herein. In an example, a vacuum operated pump includes a plurality of fluid ports, such as an inlet port and an outlet port. The vacuum operated pump may also include a communication port and a diaphragm. The communication port may provide for fluid communication among the plurality of fluid ports. The diaphragm may control the plurality of the fluid ports and the communication port. The diaphragm may mate with the communication port in an idle state of the vacuum operated pump to isolate each of the plurality of fluid ports.

Vacuum operated pumps

Embodiments of the present disclosure include systems and methods of handling ink using a movable spittoon platform. A frame defines at least a reservoir portion and a side wall protrusion adjacent the reservoir portion. A shuttle includes a platform slidably movable between a first position, in which the platform is biased to extend outwardly from an end portion of the shuttle, and a second position, in which the platform becomes retracted relative to the end portion of the shuttle. The shuttle is slidably movable relative to the frame toward the spittoon portion wherein, upon releasable contact of the platform against the protrusion, the platform moves from the first portion into the second portion to scrape ink off the platform into the reservoir portion below the shuttle.

Growing community of inventors

Singapore, Singapore

Kundan Singh