Eastman-kodak Company

Nexpress Solutions, Inc.

Other

Muhammed Aslam

Jiann-Hsing Chen

Joseph A Pavlisko

Fangsheng Wu

Dinesh Tyagi

Robert David Bobo

Jiann H Chen

Donald Saul Rimai

Arun Chowdry

Biao Tan

James Douglas Shifley

Lawrence P DeMejo

Gary F Roberts

Lawrence Paul Demejo

Thomas Nathaniel Tombs

William J Staudenmayer

Borden H Mills

Nataly Boulatnikov

Socrates Hryhorenko

Charles Chester Anderson

Wayne Thomas Ferrar

John W May

Hwai-Tzuu Tai

Rodney Ray Bucks

Alan Richard Priebe

Robert Arthur Lancaster

Stephen V Davis

Charles Eugene Hewitt

John E Derimiggio

Jerry Eugene Livadas

Tsutomu Miura

James H Hurst

Kenneth D Stack

Shyh-Hua E Jao

Tsutumu Miura

Chengchang Chen

Yee S Ng

Andy Haishung Tsou

Eric C Stelter

Peter S Alexandrovich

Louis J Sorriero

Domingo Rohde

Frank-Michael Morgenweck

Robert E Zeman

Eric Karl Zeise

William A Light

Dennis R Kamp

Diane Marie Herrick

Po-Jen Shih

Andrew Ciaschi

Scott E Tunney

Richard George Allen

John Leonard Hryhorenko

Gerhard Bartscher

Jan Dirk Boness

Carl R Bothner

Allen Kass

Donna A DiPrima

James E Mathers

Bruce D MacLellan

Richard J Kosakowski

Alfred J Amell

Earl Gregory Gomes

Richard H Berg

R Scott Lockhart

Holger Runkowske

Douglas J Kostyk

Richard John Kosakowski, Jr

Jiann-H Chen

Jiann-Chen Chen

Wilbur Charles Kasiske, Jr

Kathleen A Schrock

Joseph Anthony Pavlisko

Printers are provided for printing using large particle toner. One printer has a printer controller causing a first imaging module to form first toner image using a first toner particle having a first charge-to-mass ratio and a median volume weighted diameter between 3 um and 9 um and having a first charge-to-mass ratio and, a second imaging module to form a second toner image using second toner particles having a median volume weighted diameter that is greater than 20 um and a charge-to-mass ratio that is between &#x2153; to &#xbd; of the first charge to mass ratio of the first toner times the ratio of the median volume weighted diameter of the first toner to the median volume weighted diameter of the second toner. The first toner image is transferred to a receiver using a first electrostatic field and the second toner image is transferred using a second electrostatic field.

Large particle toner printer

Methods are provided for printing and fusing a toner on a receiver having a toner pile that extends at least about 50 &#x3bc;m above a receiver. According to one aspect, a first energy is applied to raise a temperature of a first portion of the toner pile to a range of elevated temperature levels below a glass transition temperature of the toner, a second energy is applied to a temperature of a second portion of the toner pile above the glass transition temperature and to allow the second portion to transfer energy to the first portion. The second energy is provided at a level that allows the transferred energy to raise the temperature of the first portion from the range of elevated levels to the range of temperatures above the glass transition temperature. a range of temperatures above the glass transition temperature for the toner.

Printing and fusing toner extended toner piles

A system and printer are provided for fusing toner on a receiver medium having a toner pile that extends at least about 50 &#x3bc;m above a receiver. In one aspect, a system has a first energy source to apply a first energy to raise a temperature of a first portion of the toner pile to a range of elevated temperature levels below a glass transition temperature of the toner and a second energy source to apply a second energy to raise a temperature of a second portion of the toner pile above the glass transition temperature and to allow the second portion to transfer energy to the first portion. The second energy is provided at a level that allows the transferred energy to raise the temperature of the first portion from the range of elevated levels to a range of temperatures above the glass transition temperature for the toner.

Printer and fusing system

Toners are provided. In one aspect a toner comprises, particles of at least one toner resin having particle diameters greater than about 20 microns, a first particulate addenda on the toner particles having a BET surface area of less than 60 m2/g of the toner particle; and a second particulate addenda on the toner particles having a BET surface of more than 120 m2/g.

Large particle toner

Printing methods are provided. In accordance with one aspect, a first toner image is formed with a first toner particles having a median volume weighted diameter between about 3 um and 9 um and having a first charge-to-mass ratio and, a second toner image is formed with second toner particles having a median volume weighted diameter greater than about 20 um and having a charge-to-mass ratio that is between &#x2153; to &#xbd; of the first charge-to-mass ratio times the ratio of the volume weighted average diameter of the first toner to the volume weighted average diameter of the second toner. The first toner image is transferred to a receiver using a first electrostatic field and the second toner image is transferred the receiver using a second electrostatic field.

Large particle toner printing method

Electrographic printing wherein raised information, with a distinct tactile feel, can be printed by electrographic techniques. Such electrographic printing comprises the steps of forming a desired print image, electrographically, on a receiver member utilizing standard size marking particles; and in an area of the formed print image, where desired tactile feel, raised information is to be formed, selectively forming such tactile feel, raised information utilizing marking particles of a substantially larger size than the standard size marking particles of the desired print image.

Selective printing of raised information by electrography

A fuser and receiver release system and method are provided for improving the release of receivers in high speed of printing systems. This system controls the release of a receiver in conjunction with a fuser in a printing system, and specifically the efficiency and accuracy of the release system. One embodiment of this method includes a belt fuser that allows the separating of the heat transfer and release functions of the fuser such that fuser roller could be made of hard metal core that can be heated to high temperatures without the fear of delaminating elastomeric coatings which are common in roller fusing.

Optimized fusing for high speed electrophotography system

Apparatus for selectively providing a surface finish to a receiver having an image side, comprising three rotatable members forming two nips. A finishing belt is entrained around, and movable with, one of the rotatable members, and passes through one of the nips. The receiver engages one of the nips according to what surface finish is desired. One of the rotatable members is selectively rotated to draw the receiver through the engaged nip, and a heater heats the rotatable member of the engaged nip facing the image side to impart the desired surface finish.

Toner heating apparatus with belt and nip

Printing of information with a distinct tactile feel can be accomplished by electrographic techniques. Such electrographic printing includes electrographic printing of raised images to selected areas of a receiver member using electrographic techniques so that they are fixed according to the properties of the raised print such as according to the mass per unit area or toner height. In one embodiment, by slowing down the process speed of the fuser to allow for a longer dwell so that the large toner particles and/or toner mass needed to make raised image will properly adhere to the print media without artifacts. To keep the energy requirements and the cost of the equipment down a speed switching technique is used that slows the process speed of the fuser so that the raised image is properly fused on a wide range of paper types.

Enhanced fusing of raised toner using electrography

A method of forming a variable finish on a receiver by fusing toner to a receiver in an electrophotographic printer includes providing a rotatable member, a fusing system disposed with respect to the rotatable member to form a fusing nip, and a glossing system having a glossing belt and disposed with respect to the rotatable member to form a glossing nip. The fusing system and glossing system are adapted to fuse toner to a receiver to produce respective ranges of finish of the fused toner. A finish within one of the respective ranges, and is selected, as is one of the nips, so the finish range of the system corresponding to the selected nip includes the selected finish. The rotatable member is rotated to feed the receiver through the selected nip to fuse the toner to the receiver and form the selected finish on the receiver.

Forming surface finish by electrophotographic toner fusing

Fusing apparatus for high speed electrophotography system

Printed articles are provided. In one aspect a printed article has a first toner image with a first toner particles having a median volume weighted diameter between about 3 um and 9 um and having a first charge-to-mass ratio, a second toner image with second toner particles having a median volume weighted diameter greater than about 20 um and having a charge-to-mass ratio that is between &#x2153; to &#xbd; of the first charge-to-mass ratio times the ratio of the volume weighted average diameter of the first toner to the volume weighted average diameter of the second toner, and a receiver on which the first toner image and the second toner image are formed.

Printed article

A toner composition for fixing onto a receiver in conjunction with non-contact fuser capable of fusing one or more layers of toner on the receiver such that one or more toner layers reach a fusing temperature above a glass transition temperature. One or more cooling finish rollers are located downstream from the non-contact fuser to lower the toner temperature.

Toner for use in a chilled finish roller system

A method of making a fuser roller comprising: providing a fuser roller an outer layer comprising a fluorothermoplastic polymer; and annealing the outer surface of the outer layer through contact the outer layer by means of heat and pressure.

Method of making fuser member

Internally-heated external rollers transfer heat rapidly to a fuser roller in an electrostatographic printer. Stored media process set points, input image content and input media type data are used to regulate the heat transfer rate by varying the nip width between the heated external rollers and the fuser roller. The rate of heat transfer and the rate of heat transfer adjustment are sufficiently rapid that many different media weights and types may be mixed in a print run without restrictions on media run lengths, without collation requirements per run, and without productivity losses due to slowing of feed rate for heavier receivers.

Roller fuser system with fusing member temperature control for printing

Growing community of inventors

Rochester, NY, United States of America

Muhammed Aslam