J
James R. Hulings
Researcher at Hewlett-Packard
Publications - 9
Citations - 473
James R. Hulings is an academic researcher from Hewlett-Packard. The author has contributed to research in topics: Signal & Darlington transistor. The author has an hindex of 7, co-authored 9 publications receiving 473 citations.
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Patent
Integrated circuit printhead for an ink jet printer including an integrated identification circuit
TL;DR: In this paper, an identification circuit integrated into the same substrate as the array circuit includes one or more programmable paths, the programmable path corresponding and coupled to each row line, each include the serial combination of a programmable fuse and an active device.
Patent
Printhead with reduced connections to a printer
TL;DR: In this paper, the use of on-printhead circuitry for transmitting print commands from a printer (12) to a printhead (14) is discussed, where a register (40) is used to convert a serial stream of print enable signals from the printer into format for applying such signals concurrently to switching devices (46) for one or more heater resistors (44).
Patent
Thermal inkjet printhead structure and method for making the same
Duane A. Fasen,Jerome E. Beckmann,John H Stanback,Ulrich E. Hess,James R. Hulings,Larry S. Metz,Charles E. Moore +6 more
TL;DR: An improved thermal inkjet printhead having MOSFET drive transistors incorporated therein is described in this paper, where a resistive layer is deposited on the dielectric layer and directly connected to the source, drain and gate.
Patent
Edge feed ink delivery thermal inkjet printhead structure and method of fabrication
Brian J. Keefe,Steven W. Steinfield,Winthrop D. Childers,Paul H Mcclelland,Kenneth E. Trueba,Duane A. Fasen,Jerome E. Beckmann,John H Stanback,Ulrich E. Hess,James R. Hulings,Larry S. Metz,Charles E. Moore,Eldukar V Bhaskar +12 more
TL;DR: In this article, a barrier layer containing ink channels and vaporization chambers is located between a rectangular substrate and a nozzle member containing an array of orifices, and each orifice in the nozzle member associated with a vaporization chamber and heater element.
Patent
Bipolar integrated ink jet printhead driver
TL;DR: In this article, the Darlington transistors are configured as a Darlington pair, which drive an associated resistive heater element, which is actuated by enabling a driver circuit and addressing a driver cell within the enabled driver circuit.