04771295 is referenced by 439 patents and cites 10 patents.

The novel pen body construction described herein includes multiple ink storage compartments communicating with a multi-orifice printhead, and these compartments are adapted to receive sections of ink-storage foam. Preferably, this foam is a reticulated polyurethane foam of controlled porosity and capalarity and is especially well suited for storing different ink colors, such as cyan, magenta and yellow. However, single compartment black ink storage is also within the scope of this invention.

Title
Thermal ink jet pen body construction having improved ink storage and feed capability
Application Number
6/880774
Publication Number
4771295
Application Date
July 1, 1986
Publication Date
September 13, 1988
Inventor
Randy A Coverstone
Newark
CA, US
Duong T La
San Diego
CA, US
Jeffrey P Baker
San Diego
CA, US
Agent
William J Bethurum
Assignee
Hewlett Packard Company
CA, US
IPC
G01D 15/18
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