Inventor

KNIERIM DAVID L

US89 patents

⚠️ This page may combine multiple inventors who share the name “KNIERIM DAVID L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KNIERIM DAVID L

XEROX CORP

Ink jet printer performance adjustment

Print media registration using active tracking of idler rotation

Fluid level sensor with combined capacitance and conductance

Print media thickness measurement system

Print head drive mechanism

Dual drop printing mode using full length waveforms to achieve head drop mass differences

Dual drop printing mode using full length waveforms to achieve head drop mass differences

High voltage level translator

Position encoder

Fluid level sensing system and method

Apparatus and method for detecting ink in a reservoir

Ink level sensor and method of use

Ink jet processes

Method of sensing degradation of piezoelectric actuators

Print head with integrated jet impedance measurement

Ink consumption determination

Positioning assembly for drive mechanism

Print head having ink pressure sensor

Faster warm-up, lower energy, and quieter modes for solid ink printers

System and method for per drop electrical signal waveform modulation for ink drop placement in inkjet printing

Circuit design to prevent false level sense readings

Systems and methods for detecting inkjet defects

Segmented ink stick

TEKTRONIX INC

Local display bus architecture and communications method for Raster display

Image frame buffer access speedup by providing multiple buffer controllers each containing command FIFO buffers

Variable access frame buffer memory

Ink level sensor

Spread spectrum phase-locked loop clock generator with VCO driven by a symmetrical voltage ramp signal

Phase locked loop with reduced phase noise

Ink jet print head drive with normalization

Method and circuit for computing reciprocals

Frame buffer self-test

Frame buffer memory

Apparatus and method for controlling coalescence of ink drops on a print medium

Raster display smooth line generation

Graphics display rapid pattern fill using undisplayed frame buffer memory

Method and apparatus for the reduction of phase noise

High power pulse waveform generator

Bidirectional chopper transconductance amplifier

Method and apparatus for processing component signals to preserve high frequency intensity information

Method and apparatus for processing component signals to preserve high frequency intensity information

Method and apparatus for processing component signals to preserve high frequency intensity information

Method for enhancing resolution in a printed image

Current monitor combining a shunt resistor with a Rogowski coil

Voltage mode drive of servo system

TEKTRONICS INC

Method and apparatus for generating a dot clock signal for controlling operation of a print head

KNIERIM DAVID L

Low-voltage to high-voltage level translation using capacitive coupling

NEWTON TYGH J

Electrically grounded inkjet ejector and method for making an electrically grounded inkjet ejector

JONES MICHAEL EUGENE

Drive belt slip and belt wear detection

SNYDER TREVOR JAMES

Tilt mitigation methods to control reservoir ink level and printhead pressure