Hewlett-packard Development Company, L.P.

Ben Smith

Bryan Murphy

John Oliver

Aidan O'Reilly

William Black

Willie Sheehan

Christopher Wallace

John Mulrennan

A printing fluid container () for use in a printing system is described. An example container includes a base () and a light transmissive side wall (). The side wall extends from the base to define a chamber () for receiving and storing printing fluid within the container. The side wall has an internal surface () facing the chamber, said internal surface comprising a channel (). The channel comprises a portion () indicating a height from the base, the height representing a predetermined fill amount. The channel is configured such that when the chamber contains printing fluid, printing fluid resides within the channel () and indicates the predetermined fill amount.

Printing fluid container

An apparatus, such as a flow restriction apparatus, is provided. The flow restriction apparatus includes an ink outlet perforating through a tank wall of a printing fluid reservoir of a user-refillable inkjet printer system. The ink outlet facilitates fluid communication between the printing fluid reservoir and an inkjet pen of the printer system. Printing fluid from the printing fluid reservoir enters the ink outlet from the printing fluid reservoir under suction pressure exerted by the inkjet pen. A screen is located inside the printing fluid reservoir and separates the printing fluid reservoir from the ink outlet. The screen is ink permeable. The screen includes a screen aperture having an effective radius smaller than a meniscus of a droplet of printing fluid at atmospheric pressure within the printing fluid reservoir.

Apparatus for a printer system

Pen for a printer

Growing community of inventors

Leixlip, Ireland

Ben Smith