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1. 发明公开

EP3339031A1 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.

2. 发明公开

EP3216607A1 GENERATEUR DE GOUTTES ROBUSTE 审中-实审
标题翻译：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。

3. 发明授权

EP1934049B1 METHOD FOR DROP BREAKOFF LENGTH CONTROL 有权
标题翻译：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 .

4. 发明授权

EP1602484B1 Drop generator for long array ink jet printer 有权
标题翻译：液滴生成器为喷墨打印机的喷嘴的一长排
公开(公告)号：EP1602484B1
公开(公告)日：2011-09-21
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

5. 发明授权

EP1924438B1 GENERATION OF DROPS FOR INKJET PRINTING 有权
标题翻译：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.

6. 发明公开

EP1602484A3 Drop generator for long array ink jet printer 有权
标题翻译：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.

7. 发明授权

EP0941853B1 Ink pen assembly 有权
标题翻译：墨水笔设备
公开(公告)号：EP0941853B1
公开(公告)日：2006-10-25
申请号：EP99301935.5
申请日：1999-03-12
申请人： Kodak Graphic Communications Company
发明人： Barrett, Douglas J. , Dolan, Matthew , Gomez, Carlos A. , Hagerty, Thomas
IPC分类号： B41J2/08 , B41J2/135 , B41J2/185
CPC分类号： B41J2/025 , B41J2/08 , B41J2/175 , B41J2/1752 , B41J2/185 , B41J2002/1853

8. 发明授权

EP1145852B1 Générateur de gouttes d'encre et imprimante équipée 有权
标题翻译：墨滴发电机和装备打印机
公开(公告)号：EP1145852B1
公开(公告)日：2005-11-16
申请号：EP01400920.3
申请日：2001-04-10
申请人： IMAJE S.A.
发明人： Dunand, Alain
IPC分类号： B41J2/02
CPC分类号： B41J2/025

9. 发明授权

EP1328405B1 A DROPLET GENERATOR FOR A CONTINUOUS STREAM INK JET PRINT HEAD 有权
标题翻译：液滴发生器用于连续喷墨印刷头
公开(公告)号：EP1328405B1
公开(公告)日：2004-09-29
申请号：EP01976493.5
申请日：2001-10-22
申请人： Videojet Technologies Inc.
发明人： PANNU, Sukbir, Singh , SHERMAN, Nigel, Edward
IPC分类号： B41J2/025
CPC分类号： B41J2/025
摘要： A droplet generator for a continuous stream ink jet print head comprising: an elongate cavity for containing the ink; nozzle orifices in a wall of said cavity for passing ink from the cavity to from jets, said nozzle orifices extending along the length of said cavity; and actuator means disposed so as to address the face of said cavity opposite said wall to vibrate the ink in the cavity such that each said jet breaks up into ink droplets at substantially the same predetermined distance from said wall, said actuator means comprising a plurality of constituent sub-actuators each capable of independent vibration, the combined coverage of said face of the cavity by said sub-actuators being such that the said jet break up can be achieved without resonance of said cavity in its dimension from said wall to said face.

10. 发明授权

EP1196289B1 A DROPLET GENERATOR FOR A CONTINUOUS STREAM INK JET PRINT HEAD 有权
标题翻译：液滴产生对于连续流动喷墨头
公开(公告)号：EP1196289B1
公开(公告)日：2003-05-28
申请号：EP00946056.9
申请日：2000-07-07
申请人： Videojet Technologies Inc.
发明人： MARTIN, Graham Dagnall , SHERMAN, Nigel Edward , PANNU, Sukbir Singh , KING, Andrew David
IPC分类号： B41J2/135 , B41J2/16 , B41J2/025
CPC分类号： B41J2/1632 , B41J2/025 , B41J2/162
摘要： A droplet generator for a continuous stream ink jet print head comprising: an elongate cavity (13) for containing the ink; nozzle orifices (7) in a wall (10) of said cavity (13) for passing ink from the cavity (13) to form jets, said nozzle orifices (7) extending along the length of said cavity (13); and actuator means (3) disposed on the opposite side of said cavity (13) to said wall (10) for vibrating the ink in said cavity (13) by itself vibrating relative to said wall (10), the vibration being such that each said jet breaks up into ink droplets at the same predetermined distance from said wall (10) of the cavity (13), the thickness (k) of said wall (10) through which said nozzle orifices (7) extend being less than 90 νm, said wall (10) comprising a planar member (10) secured to the remainder of said droplet generator so as to form a boundary (12) which extends around said nozzle orifices (7) and within which said planar member (10) is unsupported, said boundary (12) including first and second boundary lengths which extend along the length of said cavity (13) on either side of the nozzle orifices (7), the distance (a) between said first and second boundary lengths being less than 1700 νm.

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