Xerox Corporation

Tektronix, Inc.

Steven V Korol

Donald R Titterington

David Lyell Knierim

Trevor James Snyder

Bo Wu

Jule W Thomas, Jr

Randall Ray Bridgeman

Jennifer Misae Miyamoto

Amy R Bartlett

John Richard Andrews

Peter Johan Nystrom

Andrew V Hill

C Wayne Jaeger

Wolfgang G Wedler

Stephen Michael Kroon

Chad Johan Slenes

Jonathan Robert Brick

Gerard H Rousseau

Dan Leo Massopust

Jeffrey Russell Kohne

Steven Ross Slotto

Samuel Vincent Schultz

Augustus J Rogers, Iv

Britton T Pinson

Curtis Douglass Keller

Scott Taylor Treece

Audrey Ann Lester

Mary Ryan-Hotchkiss

Lee M Oien

Rolf K Mueller

Andrew W Hill

A method of operating a printer turns off a support structure heater when the printer enters standby mode. The print head is then moved away from an intermediate transfer surface supported by a support structure. Heat settings used to heat a print head are then varied to heat the print head and the support structure. Another method of operating a printer turns off a support structure heater when the printer enters standby mode and holds a print head adjacent to an intermediate transfer surface while the printer is in standby mode.

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

A printing system includes a print head to deliver ink to an image receptor and at least one ink reservoir to deliver ink to the print head. Driving circuitry provides signals to the print head to control delivery of the ink and a flexible circuit interposed between the print head and the ink reservoirs connects the driving circuitry to the print head. The flexible circuit may include a heater to provide heat to the ink reservoirs. Alternatively, the flexible circuit may be replaced with a rigid substrate having a heater within its layers.

Circuitry for printer

An apparatus and method provide on-demand drop volume modulation by utilizing a single transducer driving waveform to drive an ink jet. The driving waveform includes at least a first portion and a second portion that each excites a different modal resonance of ink in an ink jet orifice to produce ink drops having different volumes. A control signal is applied to the driving waveform to actuate the selected portion of the waveform to eject the desired ink drop volume. The apparatus and method improves resolution in gray scale printing by knowing an input request and placing a combination of small drops and large drops in a conventional blue noise halftone screen represented as a threshold array such that throughput and image quality goals are met while decreasing jetting robustness risk.

Apparatus and method for drop size switching in ink jet printing

A method of improving automatic document feed of media printed with phase change inks coats the surface of the phase change inks on the media with fine particles. The particles may include PMMA, glass bead, silica particles, crushed glass particles, kaolin clay, micronized PE and PTFE, calcium carbonate powder, hard inks or toner powder. The particles may be applied to the surface of a transfix drum by oil transfer or electrostatically prior to jetting the phase change ink, or in the case of hard inks may be jetted onto the surface of the transfix drum (offset) with the phase change ink or onto the print media (direct) after application of the phase change ink in an overprint printing process. Also the particles may be applied by a pair of finishing rollers after the media has been printed with the phase change inks, either in a direct or offset print process, the finishing roller on the print side being coated with the fine particles.

Automatic document feed of phase change inks

A method of printing with phase change ink on an ink jet printer that contains multiple levels of black gray scale ink and a clear or slightly tinted wax ink base and which is applied to the roughened surface of an adhesion promoting coating applied to a transparent substrate is disclosed. The adhesion promoting coating has a surface roughness of greater than about 0.5 micrometers and contains a binder and an inorganic particulate material.

Method to improve solid ink output resolution

Growing community of inventors

Dundee, OR, United States of America

Steven V Korol