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1. WO2007149243 - CONTINUOUS INK JET PRINTING WITH SATELLITE DROPLETS

Publication Number WO/2007/149243
Publication Date 27.12.2007
International Application No. PCT/US2007/013592
International Filing Date 08.06.2007
IPC
B41J 2/03 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
015characterised by the jet generation process
02generating a continuous ink jet
03by pressure
CPC
B41J 2/03
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, ; e.g. INK-JET PRINTERS, THERMAL PRINTERS; , i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
015characterised by the jet generation process
02generating a continuous ink jet
03by pressure
B41J 2002/022
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, ; e.g. INK-JET PRINTERS, THERMAL PRINTERS; , i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
015characterised by the jet generation process
02generating a continuous ink jet
022Control methods or devices for continuous ink jet
B41J 2002/033
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, ; e.g. INK-JET PRINTERS, THERMAL PRINTERS; , i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
015characterised by the jet generation process
02generating a continuous ink jet
03by pressure
033Continuous stream with droplets of different sizes
Applicants
  • EASTMAN KODAK COMPANY [US]/[US] (AllExceptUS)
  • FAGERQUIST, Randy, Lee [US]/[US] (UsOnly)
  • YANG, Qing [US]/[US] (UsOnly)
Inventors
  • FAGERQUIST, Randy, Lee
  • YANG, Qing
Common Representative
  • EASTMAN KODAK COMPANY
Priority Data
11/425,27820.06.2006US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CONTINUOUS INK JET PRINTING WITH SATELLITE DROPLETS
(FR) impression continue À jet d'encre par gouttelettes satellites
Abstract
(EN)
Satellite droplets (9,10,11) that have a lifetime selectable between an infinite lifetime and a finite lifetime are formed with a continuous fluid-jet system having a drop generator, a stimulation device (2), and a nozzle plate (3) with at least one nozzle opening. A force is applied to eject a fluid jet having a diameter D from the nozzle openings and an adjustable energy drive pulse is applied to the stimulation device in a manner to create a series of perturbations on the ejected fluid jet, such that the perturbations are separated by a distance lambda. The drive pulse is defined by a pulse shape, a pulse amplitude, and a pulse duty cycle. A first satellite formation state is established by adjusting the energy of the of drive pulse (12) while operating the continuous fluid-jet system in a state wherein the lambda/D values are greater than theta and correspond to the measured normalized Rayleigh growth rate within or beyond the first minimum. The drive pulse (13) is adjusted in a manner to bring about a second satellite formation state after at least 1 lambda of the first satellite formation state.
(FR)
L'invention concerne des gouttelettes satellites dont la durée de vie peut être sélectionnée entre une durée de vie infinie et une durée de vie finie et formées avec un système continu à projection de fluide qui présente un générateur de gouttes, un dispositif de stimulation et un plateau de gicleurs qui présente au moins une ouverture de projection. Une force est appliquée pour éjecter par les ouvertures de projection un jet de fluide qui présente un diamètre D et une impulsion d'entraînement d'énergie ajustable est appliquée au dispositif de stimulation de manière à créer une série de perturbations sur le jet de fluide éjecté, de telle sorte que les perturbations soient séparées d'une distance λ. L'impulsion d'entraînement est définie par une forme d'impulsion, une amplitude d'impulsion et un cycle de travail de l'impulsion. Un premier état de formation de satellite est établi en ajustant l'énergie de l'impulsion d'entraînement tout en faisant fonctionner le système continu à projection de fluide dans un état dans lequel les valeurs λ/D sont plus grandes que π et correspondent au taux de croissance de Rayleigh normalisé mesuré au premier minimum ou au-dessus de celui-ci. L'impulsion d'entraînement est ajustée d'une manière qui permet de définir un deuxième état de formation de satellite après au moins un λ du premier état de formation de satellite.
Also published as
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