Harry P Heibein

US Patent:

43216072, Mar 23, 1982

Filed:

Jun 17, 1980

Appl. No.:

6/160339

Inventors:

Harry P. Heibein - Longmont CO
Chein-Hwa S. Tsao - Boulder CO

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G01D 1518

US Classification:

346 75

Abstract:

In an ink jet printer, it is desirable to compensate the flight of the ink drops to correct for print errors caused by aerodynamic effects. The apparatus shown herein corrects the flight of ink drops for all aerodynamic effects, drop interactive and environmental. Correction for drop interactive effects can be accomplished in any of several well known ways. The additional correction for environmental effects is accomplished by scaling the drop interactive correction. The scale factor is first determined for static environmental conditions. Environmental conditions include the climate in which the printer operates and the specifications on the component parts of the ink jet printing assembly. The scale factor can be adjusted dynamically for changes in the environment. In particular, changes in air density of the environment are monitored and used to dynamically adjust the scale factor.

US Patent:

43743862, Feb 15, 1983

Filed:

May 15, 1981

Appl. No.:

6/264379

Inventors:

Carl R. Bildstein - Lafayette CO
Harry P. Heibein - Longmont CO
Harlan P. Mathews - Louisville CO

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G01D 1518

US Classification:

346 75

Abstract:

An ink jet pump is switched from a mechanically off or idle state to a mechanically on or active state with no drift in pressure output by maintaining the pump at the same point in its force-temperature characteristic when it is on and off. This is accomplished by driving the pump in both the active and idle states with signals that dissipate the same amount of power in the pump. The frequency of the idle state signal is high enough that the pump can not mechanically respond. The power dissipations in the active and idle states are matched by adjusting the current build-up and current decay through the coil of the pump during the idle state. When the RMS current through the coil in the active state equals the RMS current in the idle state, the power dissipations are matched.

US Patent:

42777909, Jul 7, 1981

Filed:

Dec 26, 1979

Appl. No.:

6/107225

Inventors:

Harry P. Heibein - Longmont CO
Richard G. Millington - Charlotte NC
John M. Salvadore - Boulder CO
Dean J. Scott - Longmont CO
Michael L. Sendelweck - Lafayette CO

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G01D 1518
G01D 1500

US Classification:

346 75

Abstract:

The ink jet head assembly disclosed herein has modular subassemblies with predetermined relationships between the subassemblies to minimize realignment of the ink stream when a subassembly is replaced in the field. The head assembly is modularized into nozzle, charge electrode, deflection electrode and gutter subassemblies. The charge electrode module is mounted on the nozzle module in a manner such that no field adjustment is necessary to center the charge electrode horizontally to the ink stream. The deflection electrode module is mounted on the gutter module in a manner such that no field adjustment is necessary to center the deflection electrode horizontally to the ink stream. The nozzle and charge electrode subassembly have a preset adjustment, and the gutter and deflection electrode assembly have a preset adjustment such that no field adjustment between these two subassemblies is necessary to maintain a constant flight distance for the ink drops. Finally, the nozzle module is adjustable to reposition the ink stream about the pitch axis (vertical adjustment) and the yaw axis (horizontal adjustment). The yaw axis adjustment may be preset.

Address:

7397 Glacier Vw Rd, Longmont, CO 80503

VIN:

5GAKVCED7CJ324411

Make:

BUICK

Model:

ENCLAVE

Year:

2012