Table of ContentsDiscless HP-UX Workstations | 6 |
HP-UX 6.0 provides low-cost discless workstation operaiton over a local area network. It also provides a single file system view, intervendor file sharing, and conformance to UNIX® System V Interface Definition (SVID) semantics. |
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Scott W. Wang |
Program management | 9 |
Scott W. Wang |
A Discless HP-UX File System | 10 |
Debra S. Bartlett, Joel D. Tesler |
Discless Program Execution and Virtual Memory Management | 15 |
Ching-Fa Hwang, William T. McMahon |
The Design of Network functions for Discless Clusters | 20 |
David O. Gutierrez, Chiuan-Shium Lin |
Crash Detection and Recovery in a Discless HP-UX System | 27 |
Annette Randel |
Boot Mechanism for Discless HP-UX | 33 |
Perry E. Scott, John S. Marvin, Robert D. Quist |
Discless System Configuration Taks | 37 |
Kimberly S. Wagner |
Small Computer System Interface | 39 |
The SCSI standard is the newest interface for the HP9000 Series 300 family of HP-UX workstations. It offers improved performance, simplicity in design, a wide choice of controller chips, and wide acceptance in the UNIX® community. |
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Paul Q. Perlmutter |
SCSI and HP-IB | 44 |
X: A Window System Standard for Distributed Computing Environments | 46 |
Frank E. Hall, James B. Byers |
Managing the Development of the HP DeskJet Printer | 51 |
Forays into unexplored regions of techonolgy are inevitable in the development of breaktrough products, but they must be limited and carefully managed. |
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John D. Rhodes |
Market Research as a Design Tool | 53 |
Alan Grube |
Human Factors and Industrial Design of the HP DeskJet Printer | 54 |
Don McClelland |
Development of a High-Resolution Thermal Inkjet Printer | 55 |
The HP DeskJet printer's 300-dot-per-inch resolution is fundamental to its ability to produce laser quality output. |
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William A. Buskirk, David E. Hackleman, Stanley T. Hall, Paula H. Kanarek, Robert N. Low, Kenneth E. Trueba, Richard R. Van de Poll |
Integrating the Printhead into the HP DeskJet Printer | 62 |
The printerhead support systems provide signals to energize the ink-firing resistors, electrical connections to the pen, a carriage to hold and move the pen, and elements to protect and maintain the pen. |
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J. Paul Harmon, John A. Widder |
DeskJet Printer Chassis and Mechanism Design | 67 |
One mechanism moves the carriage while another uses a single motor to pick, feed, and eject paper and prime the pen. The polycarbonate chassis supports everything. |
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Larry A. Jackson, Kieran B. Kelly, David W. Pinkernell, Steve O. Rasmussen, John A. Widder |
Data to Dots in the HP DeskJet Printer | 76 |
A microprocessor-controlled custom IC manipulates dot data to provide double-width, half-width, comressed, half-height, draft-quality, bold, underlined, and tall characters, and graphics, too. |
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Donna J. May, Mark D. Lund, Thomas B. Pritchard, Claude W. Nichols |
The DeskJet Printer Custom Ingrated Circuit | 77 |
Thomas B. Pritchard |
DeskJet Printer Font Design | 79 |
Bruce Yano |
Firmware for a Laser-Quality Thermal Inkjet Printer | 81 |
The firmware resident in the HP DeskJet printer is divided into generic printer code and printer specific code. An optional catridge provides Epson FX-80 emulation. |
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Mark J. DiVittorio, Brian Cripe, Claude W. Nichols, Michael S. Ard, Kevin R. Hudson, David J. Neff |
Slow-Down Mode | 82 |
Claude W. Nichols |
Robotic Assembly of HP DeskJet Printer Circuit Board in a Just-in-Time Environment | 87 |
A high-speed machine places most of the surface mount components while a vision-guided robot places small components and plastic leaded chip carriers. |
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P. David Gast |
DeskJet Printer Design for Manufacturability | 88 |
Don Harring |
Fabricated Parts Tooling Plan | 90 |
C/M and Machine Vision in the Production of Thermal Inkjet Printerheads | 91 |
Machine vision systems for DeskJet printhead production range from open-loop/no-go systems to process verification systems to completely integrated process control systems. |
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Mark C. Huth, Robert A. Conder, Gregg P. Ferry, Brian L. Helterline, Robert F. Aman, Timothy S. Hubley |
Whole Wafer Assembly of Thermal Inkjet Printerheads | 92 |
Robert F. Aman |
Production Print Quality Evaluation of the DeskJet Printer | 96 |
Timothy S. Hubley |
Economical, High-Performance Optical Encoders | 100 |
These high-resolution optical encoders are inexpensive and easy to install, making closed-loop motion control feasible in high-volume, extremely cost sensitive applications. |
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Howard C. Epstein, Mark G. Leonard, Robert Nicol |
Basics of Optical Incremental Encoders | 100 |
A Complete Encoder Based on the HEDS-9000 Encoder Module | 105 |
Chris Togami |
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Departments | |
In this Issue | 4 |
Cover | 5 |
What's Ahead | 5 |
Authors | 107 |