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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Jeanmaire; David L.
Address:
Brockport, NY
No. of patents:
56
Patents:


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Patent Number Title Of Patent Date Issued
8231207 Phase shifts for printing at two speeds July 31, 2012
The method includes forming first size drops by applying drop forming pulses during a unit time period .tau..sub.0; forming second size drops by applying drop forming pulses during a second size drop time period, .tau.m, which is a multiple, m, of the unit time period; forming the co
8226217 Dynamic phase shifts to improve stream print July 24, 2012
A method of forming print drops includes forming drops of a first size by applying drop forming energy pulses during a unit time period, .tau..sub.0; forming drops of a second size by applying drop forming energy pulses during a second drop time period, .tau..sub.m, wherein the secon
8104878 Phase shifts for two groups of nozzles January 31, 2012
A method includes forming drops of first size by applying drop-forming pulses during unit time period, .tau..sub.0; forming drops of second size by applying drop-forming pulses during second size drop time period, .tau.m, wherein the second sized drop time period is a multiple, m, of
8091990 Continuous printhead contoured gas flow device January 10, 2012
A continuous liquid printing system gas flow device includes a gas flow duct structure including a first wall and a second wall. The first wall and the second wall are positioned spaced apart and opposite each other to form an opening. The first wall is contoured such that a distance
7946691 Deflection device including expansion and contraction regions May 24, 2011
A method of printing and a printhead are provided. The printhead includes a nozzle array having a width; a gas flow source; and a gas flow duct in fluid communication with the gas flow source. The gas flow duct includes an expansion region and a compression region. The expansion region o
7748829 Adjustable drop placement printing method July 6, 2010
A method of printing includes associating a pixel area of a recording medium with a nozzle and a time interval during which a fluid drop ejected from the nozzle can impinge the pixel area of the recording medium. The time interval is divided into a plurality of subintervals. Some of
7413293 Deflected drop liquid pattern deposition apparatus and methods August 19, 2008
Drop deflector apparatus and methods for a continuous drop emission system comprising a plurality of drop nozzles emitting a plurality of continuous streams of a liquid that break up into streams of drops of substantially uniform drop volume having nominal flight paths that are substanti
7303265 Air deflected drop liquid pattern deposition apparatus and methods December 4, 2007
A drop deflector apparatus for a continuous drop emission system that deposits a liquid pattern on a receiver according to liquid pattern data comprising a plurality of drop nozzles formed along a nozzle array axis and emitting a plurality of continuous streams of a liquid that breaks up
7261396 Continuous inkjet printer having adjustable drop placement August 28, 2007
A method of printing includes associating a pixel area of a recording medium with a nozzle and a time interval during which a fluid drop ejected from the nozzle can impinge the pixel area of the recording medium; dividing the time interval into a plurality of subintervals; grouping s
7152964 Very high speed printing using selective deflection droplet separation December 26, 2006
A method for ink jet printing a plurality of pixels corresponding to a digital image including pixels of image data is taught using a half toning algorithm wherein droplets of two different volumes are formed. The method includes the steps of determining if the print command is inval
6986566 Liquid emission device January 17, 2006
An emission device for ejecting a liquid drop is provided. The device includes a body. Portions of the body define an ink delivery channel and other portions of the body define a nozzle bore. The nozzle bore is in fluid communication with the ink delivery channel. An obstruction having
6923529 Ink-jet printing with reduced cross-talk August 2, 2005
An ink jet printer having an array of nozzles from which ink droplets of adjustable volume are emitted further includes a mechanism adapted to individually adjust the volume of the emitted ink droplets. The mechanism has a first state wherein the emitted droplets of selected nozzles are
6908178 Continuous ink jet color printing apparatus with rapid ink switching June 21, 2005
A print head provides for multi-level printing with colorants of different densities without print head replication. A continuous ink jet printer includes a plurality of ink sources; a print head connected to multiple ink sources; and apparatus adapted to selectively transfer ink from ea
6899410 Continuous ink-jet printing apparatus with integral cleaning May 31, 2005
An ink jet printing apparatus having a cleaning station that is structurally integrated with a droplet deflector is provided. The apparatus includes an ink droplet forming mechanism formed from a printhead having at least one nozzle for ejecting a stream of ink droplets of different
6883904 Apparatus and method for maintaining constant drop volumes in a continuous stream ink jet printe April 26, 2005
A method an apparatus for maintaining a predetermined ejected ink drop volume in a continuous inkjet printer is provided. An ink parameter, for example, temperature, velocity, flow rate, viscosity, is monitored. A time period between activation control signals provided to an ink drop for
6866370 Apparatus and method for improving gas flow uniformity in a continuous stream ink jet printer March 15, 2005
A method of enhancing print quality of a continuous ink jet printing device and such a printing device in which selected droplets in a stream of droplets are selectively deflected to impinge on a print medium, the method including the steps of providing a plurality of ink droplets, each
6863384 Continuous ink jet method and apparatus March 8, 2005
A continuous inkjet method and apparatus including a printhead (2) having an orifice (7) for ejecting a continuous stream of ink droplets of a larger size (21) and a smaller size (23), and a droplet filter (41) for generating a liquid curtain (43) that captures and absorbs the smaller
6851796 Continuous ink-jet printing apparatus having an improved droplet deflector and catcher February 8, 2005
An apparatus for printing an image is provided. The apparatus includes an ink droplet forming mechanism operable to selectively create a stream of ink droplets having a plurality of volumes traveling along a first path. A droplet deflector is positioned at an angle with respect to the st
6827429 Continuous ink jet printing method and apparatus with ink droplet velocity discrimination December 7, 2004
An apparatus for printing an image is provided. In this apparatus, each nozzle is operable to selectively create a stream of ink droplets having a plurality of velocities. The apparatus also includes a droplet deflector having a gas source. The gas source is positioned at an angle with r
6793328 Continuous ink jet printing apparatus with improved drop placement September 21, 2004
An apparatus for printing an image is provided. In this apparatus, each nozzle is operable to selectively create a stream of ink droplets having a plurality of volumes. The apparatus also includes a droplet deflector having a gas source. The gas source is positioned at an angle with resp
6746108 Method and apparatus for printing ink droplets that strike print media substantially perpendicul June 8, 2004
A method for printing ink droplets that strike print media substantially perpendicularly, including the steps of: emitting a first drop having a first volume and a second drop having a second volume as a stream of ink from a plurality of nozzle bores formed in a printhead; moving either
6739705 Continuous stream ink jet printhead of the gas stream drop deflection type having ambient pressu May 25, 2004
A continuous stream ink jet printhead includes an ink droplet forming mechanism operable to selectively create a stream of ink droplets having a plurality of volumes and a droplet deflector having a gas source. The gas source is operable to interact with the stream of ink droplets thereb
6682182 Continuous ink jet printing with improved drop formation January 27, 2004
Imaging apparatus includes a printhead with one or more nozzles, wherein heaters are positioned proximate to the nozzles. Electrical activation of the heaters creates ink droplets having a plurality of volumes. The use of higher-energy pulses in the portion of the waveform of heater acti
6644792 Ink droplet forming apparatus and method for use in ink jet printer system November 11, 2003
According to one aspect of the invention, an ink droplet forming mechanism for use in an ink jet printer system includes an ink discharge nozzle for discharging a printing ink; at least two heating elements activatable individually to heat a printing ink at the nozzle to form an ink drop
6588889 Continuous ink-jet printing apparatus with pre-conditioned air flow July 8, 2003
A continuous stream ink jet printer is provided having an ink droplet forming mechanism for ejecting a stream of ink droplets having a selected one of at least two different volumes toward a print medium, a droplet deflector for producing a flow of gas that interacts with the ink droplet
6588888 Continuous ink-jet printing method and apparatus July 8, 2003
An apparatus for printing an image is provided. The apparatus includes a droplet forming mechanism operable in a first state to form droplets having a first volume travelling along a path and in a second state to form droplets having a plurality of other volumes travelling along the
6575566 Continuous inkjet printhead with selectable printing volumes of ink June 10, 2003
An inkjet printhead, that includes a plurality of nozzle bores from which streams of ink droplets having selectable first and second volumes are emitted; a droplet deflector for deflecting the ink droplets having first and second volumes into first and second paths respectively, the drop
6572222 Synchronizing printed droplets in continuous inkjet printing June 3, 2003
Both an inkjet printer and method are provided for controlling inkjet printing on a receiver. The inkjet printer includes a printhead having at least one nozzle for ejecting a stream of ink droplets, a droplet deflector for generating a flow of gas that impinges on the stream of ejec
6561616 Active compensation for changes in the direction of drop ejection in an inkjet printhead May 13, 2003
For an inkjet printhead (10) with integral compensation for misdirection of ink drops (37) ejected through at least one nozzle (24) of the printhead (10), a system and method of modifying the nozzle cavity space (32a) so as to compensate for the effects of defects in the printhead (10) b
6554410 Printhead having gas flow ink droplet separation and method of diverging ink droplets April 29, 2003
An apparatus for printing an image is provided. The apparatus includes an ink droplet forming mechanism operable to selectively create a stream of ink droplets having a plurality of volumes and a droplet deflector having a gas source. The gas source is positioned at an angle with respect
6554389 Inkjet drop selection a non-uniform airstream April 29, 2003
An apparatus for controlling errant ink drops in an inkjet printer having a plurality of nozzles for ejecting ink drops along a droplet trajectory and printing the ejected ink drops onto a receiver, including: at least one airflow channel arranged to provide a non-uniform airflow pattern
6536883 Continuous ink-jet printer having two dimensional nozzle array and method of increasing ink drop March 25, 2003
A continuous inkjet printing apparatus is provided. The apparatus includes a printhead having a two dimensional nozzle array. The two dimensional nozzle array includes a first nozzle row being disposed in a first direction and a second nozzle row being disposed displaced and offset r
6517197 Continuous ink-jet printing method and apparatus for correcting ink drop replacement February 11, 2003
An apparatus for printing an image is provided. The apparatus includes a source of ink. A droplet forming mechanism is operable in a first state to form droplets from the source having a first volume traveling along a first desired path and in a second state to form droplets from the sou
6509917 Continuous ink jet printer with binary electrostatic deflection January 21, 2003
Apparatus and process for controlling ink in a continuous ink jet printer in which a continuous stream of ink is emitted from a nozzle includes a droplet generator which causes the stream to break up into a plurality of droplets with an adjustable drop break off position having at least
6508543 Continuous ink jet printhead and method of translating ink drops January 21, 2003
A continuous ink jet apparatus is provided. The printhead includes a nozzle array with portions of the nozzle array defining a length dimension. A drop forming mechanism is positioned relative to the nozzle array. The drop forming mechanism is operable in a first state to form ink drops
6508532 Active compensation for changes in the direction of drop ejection in an inkjet printhead having January 21, 2003
For an inkjet printhead (10) having at least one nozzle (24) and a nozzle opening (26) in the nozzle (24), a disk (28) having an off-center aperture (38) about the disk axis (X, Y) positioned over the nozzle opening (26), a system and method of compensating for the effects of defects in
6505922 Continuous ink jet printhead and method of rotating ink drops January 14, 2003
A continuous ink jet apparatus is provided. The apparatus includes a nozzle array with portions of the nozzle array defining a length dimension. A drop forming mechanism is positioned relative to the nozzle array and is operable in a first state to form ink drops having a first volume
6505921 Ink jet apparatus having amplified asymmetric heating drop deflection January 14, 2003
Apparatus for controlling ink in a continuous ink jet printer includes an ink delivery channel; a source of pressurized ink communicating with the ink delivery channel; a nozzle bore which opens into the ink delivery channel to establish a continuous flow of ink in a stream, the nozzle b
6491362 Continuous ink jet printing apparatus with improved drop placement December 10, 2002
An apparatus for printing an image is provided. In this apparatus, each nozzle is operable to selectively create a stream of ink droplets having a plurality of volumes. The apparatus also includes a droplet deflector having a gas source. The gas source is positioned at an angle with resp
6478414 Drop-masking continuous inkjet printing method and apparatus November 12, 2002
Method and apparatus (10, 102) for continuous inkjet printing wherein a first continuous stream of ink droplets (66) traveling above a first flow path (48) is used as a mask for colliding with a second continuous stream of ink droplets (70, 72) traveling along an second, intersecting flo
6474781 Continuous ink-jet printing method and apparatus with nozzle clusters November 5, 2002
An apparatus for printing an image is provided. The apparatus includes an ink droplet forming mechanism operable to selectively create a stream of ink droplets having a plurality of volumes, a means for selectively obtaining droplet coalescence between adjacent droplet streams, and a
6457807 Continuous ink jet printhead having two-dimensional nozzle array and method of redundant printin October 1, 2002
A continuous inkjet printing apparatus is provided. The apparatus includes a printhead having a two-dimensional nozzle array with the two-dimensional nozzle array having a plurality of nozzles disposed such that a redundant nozzle pair is formed. A drop forming mechanism is positioned re
6450628 Continuous ink jet printing apparatus with nozzles having different diameters September 17, 2002
An apparatus for printing an image is provided. The apparatus includes a print head with nozzles of differing diameters. This allows multiple printing drop sizes for multi-level printing, thus achieving higher print quality at the same resolution. Additionally, each nozzle is operable to
6412910 Permanent alteration of a printhead for correction of mis-direction of emitted ink drops July 2, 2002
A manner of permanent alteration of an ink jet print head (10) for correction of misdirection of emitted or ejected ink drops. The ink jet print head (10) has a surface (14) defining at least one orifice or nozzle (16) therethrough for emitting or ejecting ink droplets from an ink source
6402305 Method for preventing ink drop misdirection in an asymmetric heat-type ink jet printer June 11, 2002
A method for preventing the misdirection of the initial ink droplets discharged from the nozzle of an asymmetric heat-type ink jet printer is provided. The method includes the step of providing power to the heating element that is adjacent to the inkjet nozzle at a higher level than the
6394577 Ink jet printing on a receiver attached to a drum May 28, 2002
Ink jet printing apparatus in response to a digital image for forming an ink image on a receiver attached to the surface of a drum rotatable about an axis. The ink jet printing apparatus includes an actuable ink jet print head movable in a direction parallel to the drum axis for deliveri
6390610 Active compensation for misdirection of drops in an inkjet printhead using electrodeposition May 21, 2002
For an inkjet printhead (10) having at least one nozzle (24) with heater elements (28a, 28b) predisposed to direct the flow of ink drops (37) through the nozzle (24), a system and method of compensating for the effects of defects in the inkjet printhead (10) to permit compensation in
6325480 Ink jet printer and method capable of forming a plurality of registration marks on a receiver an December 4, 2001
An ink jet printer and method capable of forming a plurality of registration marks on a receiver and sensing the marks formed thereby. The method includes a print head for printing an image of predetermined length on the receiver. The receiver has an image area for receiving the image
6254225 Continuous ink jet printer with asymmetric heating drop deflection July 3, 2001
A method for controlling a terminal flow of ink droplets from the nozzle of an ink jet printer at the end of a printing operation is provided. The printer has a first heating element disposed on one side of the nozzle that is selectively actuated to direct ink droplets away from a record
6203145 Continuous ink jet system having non-circular orifices March 20, 2001
A continuous ink jet printing system using asymmetrical heating of the fluid in which the nozzle bore (46, 76, 78) of the printhead preferably has a non-circular opening. The nozzle bore (46, 76, 78) has reflection symmetry about the long axis of its cross-section and may be, for example
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