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    METHOD AND DEVICE FOR DETECTING THE VELOCITY OF JETS
    5.
    发明公开
    METHOD AND DEVICE FOR DETECTING THE VELOCITY OF JETS 审中-公开

    公开(公告)号：EP3339031A1

    公开(公告)日：2018-06-27

    申请号：EP17207683.8

    申请日：2017-12-15

    申请人： Dover Europe Sàrl

    发明人： DESIDERI, Yann

    IPC分类号： B41J2/025 ,  B41J2/105 ,  B41J2/12 ,  B41J2/125

    CPC分类号： B41J2/04561 ,  B41J2/025 ,  B41J2/04586 ,  B41J2/105 ,  B41J2/12 ,  B41J2/125

    摘要： The invention relates to a method for testing at least one nozzle of a multi-jet print head of an inkjet printer comprising a plurality of nozzles (4), at least one 1 st and one 2 nd deviation electrode (14a, 14b) for each jet, method in which:
    - at least one jet is formed using said nozzle (9), at a drop formation frequency,
    - an estimate is made of:
    * a cutoff frequency (Fc) of at least this jet, by variation of the jet formation frequency, at a constant jet velocity,
    * or, at constant formation frequency of the drops from at least this jet, by variation of the jet velocity, the velocity at which the cutoff frequency (Fc) is equal to said formation frequency;

    - this cutoff frequency (Fc) or this velocity is compared with a reference value and the functional or non-functional state of at least said nozzle is deduced.

    GENERATEUR DE GOUTTES ROBUSTE
    6.
    发明公开
    GENERATEUR DE GOUTTES ROBUSTE 审中-公开
    强力滴落发生器

    公开(公告)号：EP3216607A1

    公开(公告)日：2017-09-13

    申请号：EP17165913.9

    申请日：2015-04-08

    申请人： Markem-Imaje Holding

    发明人： BARBET, Bruno ,  DE SAINT ROMAIN, Pierre

    IPC分类号： B41J2/025 ,  B41J2/02 ,  B41J2/14

    CPC分类号： B41J2/14008 ,  B41J2/02 ,  B41J2/025 ,  B41J2/14201

    摘要： On décrit un dispositif de formation et d'éjection de gouttes d'un jet d'encre d'une machine d'impression à CIJ, ce dispositif comportant :
    a) une cavité destinée à contenir une encre et comportant une extrémité munie d'une buse (10) d'éjection de gouttes d'encre,
    b) des moyens (21, 22, 32, 41, 42), formant actionneur, en contact avec la cavité,
    dispositif dans lequel la modulation de vitesse de jet, en sortie de buse (10) a une valeur ΔVj(f t ), à la fréquence de travail, et ne varie pas, à température égale à 15°C et à 35°C, dans une gamme de fréquence de ± 5 kHz autour de la fréquence de travail f t , en dehors de l'intervalle compris entre 0,25 ΔVj(f t ) et 4 ΔV(f t ).
    Pour ce faire l'impédance acoustique de la cavité est adaptée pour limiter son influence sur la modulation de vitesse de jet.

    摘要翻译： 提供了一种用于形成和喷射来自ICJ印刷机的喷墨滴的装置，所述装置包括：a）用于容纳墨的空腔，并且所述空腔具有设置有 用于喷射墨滴的喷嘴（10），b）形成致动器的装置（21,22,32,41,42），所述致动器与所述腔接触，其中所述喷射速度调制，输出 喷嘴（10）在工作频率下具有值ΔVj（ft），并且在频率的±5kHz频率范围内在15℃和35℃的温度下不变化 ft，超出0.25ΔVj（ft）至4ΔV（ft）的范围。 为此，腔的声阻抗适合于限制其对喷射速度调制的影响。

    METHOD FOR DROP BREAKOFF LENGTH CONTROL
    7.
    发明授权
    METHOD FOR DROP BREAKOFF LENGTH CONTROL 有权
    方法用于控制TROPFENABREISSLÄNGE

    公开(公告)号：EP1934049B1

    公开(公告)日：2012-02-22

    申请号：EP06803195.4

    申请日：2006-09-08

    申请人： Eastman Kodak Company

    发明人： PIATT, Michael,J. ,  FAGERQUIST, Randy, L.

    IPC分类号： B41J2/025 ,  B41J2/03

    CPC分类号： B41J2/03 ,  B41J2/025

    摘要： An inkjet printing system having a plurality of inkjets, wherein the inkjets (10, 13) are disposed in a row and directed toward a media (7), wherein the printhead includes a drop generator (9) having an orifice plate (51), wherein the orifice plate has nozzles (30, 33) with a first and second group forming an inkjet, wherein the first group is in interleaved patterns with the second group, and the geometry of the first group is different from the second group. A stimulating device provides a signal to the continuous inkjets to produce a first and second group of drops with a first and a second breakoff length, wherein the first and second breakoff lengths are different; a charge plate (23) with drop charging electrodes positioned adjacent each inkjet opposite the drop generator. A controller in communication with each drop charging electrode adapted to supply a pulse to each electrode to isolate the first and second group of drops .

    GENERATION OF DROPS FOR INKJET PRINTING
    9.
    发明授权
    GENERATION OF DROPS FOR INKJET PRINTING 有权
    减产喷墨

    公开(公告)号：EP1924438B1

    公开(公告)日：2011-08-17

    申请号：EP06793424.0

    申请日：2006-09-11

    申请人： Markem-Imaje

    发明人： BARBET, Bruno

    IPC分类号： B41J2/025

    CPC分类号： B41J2/025 ,  B41J2002/022 ,  B41J2002/033

    摘要： The generator according to the invention operates by strong stimulation in the form of pulses (τ) so as to generate drops, particularly for ink jet printing purposes. This choice enables breaking the jet (30) close to the ejection (16) and reduces the interference ratio. A generator with piezoelectric stimulation is particularly suitable.

    Drop generator for long array ink jet printer
    10.
    发明公开
    Drop generator for long array ink jet printer 有权
    液滴生成器为喷墨打印机的喷嘴的一长排

    公开(公告)号：EP1602484A3

    公开(公告)日：2009-01-07

    申请号：EP05016732.9

    申请日：1999-11-29

    申请人： Eastman Kodak Company

    发明人： Braun, Hilarion ,  Katerberg, James A. ,  Baumer, Michael F. ,  Fagerquist, Randy L.

    IPC分类号： B41J2/025

    CPC分类号： B41J2/025 ,  B41J2/03 ,  B41J2/04

    摘要： A drop generator for use in an ink jet printer is capable of stimulating long ink jet arrays at high operating frequencies. The drop generator comprises a substantially uniform cross section for a central portion and two end sections with different cross sections. The end sections have features to adjust a resonant frequency of the end sections to match that of the central portion. In particular, these features comprise cuts on a top of the drop generator. The drop generator utilizes multi-lobed radial bending modes for vibration of an array of orifices, and the vibrational modes are driven by at least two rows of transducers which extend substantially the length of the drop generator. The transducers are placed consistent with a lobe structure of an operational radial bending mode.