EP3705295A1 - Procédé de fonctionnement d'une imprimante jet d'encre continu à surveillance optique de la qualité d'impression, imprimante à jet d'encre continu à surveillance optique de la qualité d'impression et procédé d'apprentissage d'une imprimante à jet d'encre continu à surveillance optique de la qualité d'impression - Google Patents

Procédé de fonctionnement d'une imprimante jet d'encre continu à surveillance optique de la qualité d'impression, imprimante à jet d'encre continu à surveillance optique de la qualité d'impression et procédé d'apprentissage d'une imprimante à jet d'encre continu à surveillance optique de la qualité d'impression Download PDF

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Publication number
EP3705295A1
EP3705295A1 EP19161144.1A EP19161144A EP3705295A1 EP 3705295 A1 EP3705295 A1 EP 3705295A1 EP 19161144 A EP19161144 A EP 19161144A EP 3705295 A1 EP3705295 A1 EP 3705295A1
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EP
European Patent Office
Prior art keywords
print image
bitmap
substrate
cij printer
optical monitoring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19161144.1A
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German (de)
English (en)
Other versions
EP3705295B1 (fr
Inventor
Klaus Specker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Paul Leibinger GmbH and Co KG
Original Assignee
Paul Leibinger GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Paul Leibinger GmbH and Co KG filed Critical Paul Leibinger GmbH and Co KG
Priority to EP19161144.1A priority Critical patent/EP3705295B1/fr
Priority to US17/436,437 priority patent/US11858267B2/en
Priority to JP2021552743A priority patent/JP7332707B2/ja
Priority to PCT/EP2019/084488 priority patent/WO2020177912A1/fr
Priority to CN201980093684.5A priority patent/CN113543977B/zh
Publication of EP3705295A1 publication Critical patent/EP3705295A1/fr
Application granted granted Critical
Publication of EP3705295B1 publication Critical patent/EP3705295B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/12—Ink jet characterised by jet control testing or correcting charge or deflection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/075—Ink jet characterised by jet control for many-valued deflection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/125—Sensors, e.g. deflection sensors

Definitions

  • Inkjet printers are a widely used class of printers.
  • a family of this class that is particularly suitable for industrial applications and has therefore achieved a high degree of penetration in this field are the so-called continuous inkjet printers (CIJ printers).
  • CIJ printers continuous inkjet printers
  • a continuous inkjet printer prints with an ink that contains a variable amount of solvent. Accordingly, there is a mixing tank in which solvent from a solvent tank and the concentrated ink from an ink tank are mixed together to obtain the ink used for printing.
  • solvent is used in the following, it means the liquid that is used for printing; the term “concentrated ink” is used for the liquid provided in the ink tank.
  • the ink is fed under pressure to a nozzle on the printhead, where the drops required for the actual printing process are created from the ink jet according to the basic principle of Rayleigh's decay of laminar liquid jets.
  • the droplet formation and in particular the droplet size is controlled by a modulation that is impressed on the ink jet, for example, by piezo elements excited in a suitable manner.
  • the drops generated in this way are electrically charged in a suitable manner and are moved to a desired trajectory by deflection electrodes guided, which either leads them to a desired position on a substrate to be printed or, if no printing process is to take place, a capture at the print head, for example a catcher tube, and recycling of the ink droplet, ie its return into the mixing tank, allows.
  • the element to be printed e.g. a letter or a number
  • a matrix or bitmap of ink drops e.g. in many cases by a 7x5 matrix
  • one dimension i.e. rows or columns of the matrix or bitmap
  • the other dimension is realized by a material feed of the material to be printed.
  • the CIJ printer therefore usually prints a sequence of so-called "strokes", i.e. rows of juxtaposed ink droplets;
  • the character to be displayed is converted into a matrix or bitmap corresponding to the resolution, which is then processed line by line or column by column.
  • an essential goal is to ensure that the ink droplets land as reproducibly as possible at the correct location on the substrate to be printed by activating the deflection electrodes, so that neither the printed image on a given substrate is distorted nor the position of the printed image significantly changes on substrates that are printed one after the other becomes.
  • Such significant changes can possibly occur due to fluctuations in operating parameters, and it is desirable to determine them as quickly as possible in order, on the one hand, to generate the desired print image again through appropriate adjustment of the settings and, on the other hand, to remove products that have misprints from the production line in good time to be able to.
  • One known way of approaching this goal is to monitor the print image with a camera, the camera preferably being in signal communication with the CIJ printer so that data determined by the camera and recorded images can be shown on a display of the CIJ printer .
  • the time interval between two successive printing processes in which different copies of the product to be printed are printed is often very short, so that the aim is to identify misprints as quickly as possible in order to reduce the number of errors to keep printed products as low as possible.
  • a further significant difficulty in camera monitoring of the print image is that a learning process must be carried out in any case if this is to be carried out (also) automatically.
  • the object of the invention is therefore to improve CIJ printers with optical monitoring, in particular with regard to the reaction time during monitoring and / or with regard to the time required for teaching in the optical monitoring system.
  • the pattern to be recognized or checked is much simpler, which makes pattern recognition simpler and more reliable and reduces its computing time and hardware requirements.
  • the checking rate is significantly increased so that an error can be detected more quickly.
  • At least one control signal for sequential control of charging electrodes and / or deflection electrodes of the CIJ printer is used in the automated comparison of the bitmap of the desired print image and the print image detected with the optical monitoring means and applied to the substrate in order to determine the expected print image of the respective row or column.
  • At least one further control signal is used for the sequential control of charging electrodes and / or deflection electrodes of the CIJ printer during the automated comparison of the bitmap of the desired print image and the print image applied to the substrate, recorded with the optical monitoring means to determine the expected print image of the respective row or column.
  • this control signal can be used directly to define a target position for monitoring.
  • the CIJ printer has several processors or a processor with several processor cores, with the bitmap of the desired print image being generated on the one processor and the generation of the control signals for the sequential control of charging electrodes and / or deflection electrodes of the CIJ printer is controlled, and the automated comparison of the bitmap of the desired print image and the print image applied to the substrate, recorded with the optical monitoring means, takes place on the other processor.
  • the image processing does not negatively influence the actual printing operation even when the CPU power required is high.
  • the CIJ printer according to the invention for carrying out the method according to the invention comprises a hydraulic module for supplying ink, a drop generator comprising a nozzle and an oscillator for pressure modulation, which is supplied with ink by the hydraulic module and generates ink drops, at least one charging electrode for applying a defined charge to the drop generator generated ink droplets, at least one deflection electrode for influencing the trajectory of the ink droplets generated by the drop generator, a controller which is set up to convert a bitmap to be printed line by line or column into a sequence of control signals with which the charging electrode and / or the deflection electrode so be controlled so that an image of this row or column is formed on a substrate to be printed from drops of a drop sequence, and an optical monitoring means, which can be designed in particular as a CCD camera, for monitoring the on the to be printed substrate formed image.
  • the CIJ printer has a data processing device which is set up to carry out the step of automated comparison according to one of claims 1 to 5.
  • the CIJ printer has a first processor or a first processor core which is assigned to the controller and has a second processor or processor core which is assigned to the data processing device. In this way, undesired influencing of the printing speed by the image analyzes to be carried out can be avoided.
  • the controller is in signal communication with the data processing device, so that the respective sequences of control signals or control commands corresponding to these sequences are passed on from the controller to the data processing device.
  • the former corresponds to an analog signal transmission, the latter to a digital signal transmission.
  • the CIJ printer In the method according to the invention for teaching an optical monitoring system of a CIJ printer with such an optical monitoring system, it is provided that the CIJ printer generates a bitmap containing a sequence of control signals for controlling charging electrodes and / or deflection electrodes of the CIJ printer in at least one pass the execution of a stroke contains, generates that a real print image of this bitmap is implemented by applying drops of ink to a substrate to be printed, that an image of the real print image is recorded with the optical monitoring means and evaluated in such a way that the respective response to a Control signal for a given stroke of the real print image applied to the substrate is identified and stored as the expected print image associated with this stroke or control signal. It is particularly advantageous if this sequence includes all control signals; but it can It is also sufficient if it only includes certain, distinctive control signals for strokes whose printed image shows specific deviations to be expected.
  • this bitmap can also be generated stroke by stroke, i.e. that the CIJ printer sequentially generates all control signals for activating charging electrodes and / or deflection electrodes of the CIJ printer in at least one pass in order to realize points or groups of points of the bitmap by applying drops of ink to a substrate to be printed, and that the print image applied to the substrate in response to the control signal is recorded with the optical monitoring means and is stored as the print image assigned to the control signal.
  • a more complex bitmap is formed from the possible or the selected “elementary strokes” and the image of this bitmap recorded by the optical monitoring means is evaluated, while in the second case each stroke is executed and analyzed individually.
  • the advantage of the first approach is that interactions between successive strokes can already be taken into account, but the evaluation in the second case may be easier.
  • the storage can take place not only as an image file but also in the form of coordinates of camera pixels at which the signal from ink drops is to be expected.
  • a library of at least one image that is assigned to a stroke is automatically created or a library of ink drop positions to be expected for certain strokes is created.
  • Another advantage is that systematic deviations can often be more easily identified on individual strokes and corrected if necessary. For example, if the medium to be printed is fed back at too high a speed, the stroke and the bitmaps composed of these can tilt. It is characteristic of this that, independently of the specific print image of the stroke, an offset of the individual ink drops occurs systematically, which becomes greater the closer to the end of a stroke the drop in question was produced.
  • the printer In order to obtain a fluctuation range for the drop positions obtained, it is advantageous if the printer generates sequences of - preferably, but not necessarily all - control signals for activating charging electrodes and / or deflection electrodes of the CIJ printer in several passes, in order to generate points or groups of dots of the bitmap by applying ink droplets to a substrate to be printed, and when the print image applied to the substrate in response to the control signal is recorded with the optical monitoring means and is stored as the print image assigned to the control signal.
  • the print image and in particular the size of the individual drops or that of an individual Drops created dots also depends on the ink and substrate used.
  • the printer is allowed to generate sequences of - preferably, but not necessarily all - control signals for controlling the charging electrodes and / or deflection electrodes of the CIJ printer in several passes, the sequence of the control signals for controlling charging electrodes and / or deflection electrodes of the CIJ -Printer, generated, is varied from sequence to sequence. In principle, it is also possible to do this for all possible combinations of strokes.
  • the analysis options that can be created with the data obtained in the teach-in routine can be increased even further if the printer varies print parameters in the several runs, which can fluctuate during the printing operation of the CIJ printer and lead to a change in the print image.
  • the viscosity of the ink can fluctuate during operation, which can lead to a change in the printed image.
  • this parameter in a learning phase its effects can be recorded and on the one hand to improve the printing success control, on the other hand can also be used for the early detection of an impending malfunction.
  • Figure 1a the letter "E" is shown on a 7x5 matrix 1 as a simple example of such a bitmap 90.
  • a CIJ printer can nowadays usually display more points in a line, for example 32 points, which allows the user to print complex content, as exemplified in Figure 1d are shown to compile as the desired print image, which is then converted into the corresponding bitmap and processed.
  • the roles of the rows and columns can of course be swapped, especially with a different orientation.
  • Figure 1c shows schematically how the generation and deflection of the ink droplets is realized by the CIJ printer.
  • the ink is with defined properties, in particular defined pressure and defined viscosity of one in the Figure 1c Hydraulic module 5, shown only schematically, is provided and that in FIG Figure 1c Unrecognizable ink channel of the nozzle 10 supplied.
  • the column of ink standing in the ink channel of the nozzle 10 is modulated by an oscillator 20 which, for example, can be designed as a piezo actuator. After the exit from the nozzle 10, with suitably selected jet conditions, the theoretically of C.
  • ink droplets 12 of a jet that meets these conditions typically propagate at a speed of 20 m / s to 30 m / s, and even today high five-digit and even six-digit numbers of ink droplets 12 can be generated per second.
  • an ink drop 12 After an ink drop 12 has been detached, it is provided with a target charge on the charging electrode 25, the success of the charging process being achieved with a detector electrode which is shown in FIG Figure 1c is not recognizable, can be checked and is deflected to a different extent depending on the charge on a deflection plate or deflection electrode 30 which is placed under voltage, so that, as in FIG Figure 1c is shown by way of example, the charged ink droplets 12 when they strike the substrate 100 to be printed at a more or less well-defined position, in the present orientation line position of the matrix defining the character lands, while unused ink droplets 12a are not loaded into the Catcher tube 35 fly on and are returned to the ink mixing tank (not shown) in the hydraulic module 5.
  • the charging electrode 25 is controlled by a controller, which converts a print image generated directly or indirectly by a user in a memory 60 in a raster image processor 65 into a bitmap 90, and the information about the rows or columns to be printed on the one hand to a charging voltage computer 70 forwards, which is preferably designed as a separate processor.
  • the charging voltage calculator 70 generates a corresponding charging signal according to the calculated charge to be applied and forwards it as a control signal to the charging electrode 25.
  • the processing takes place as in Figure 3 is shown in the form of a schematic flowchart, in the CIJ printer in that from a print image specified by the user in step 110, which, for example, if counter information is contained, can change between printing processes to be carried out directly one after the other and stored or temporarily stored in the memory 60 the bitmap 90 to be printed is obtained on a processor or processor core, the raster image processor (RIP) 65, in a process called ripping 120 and in particular the sequence of points to be mapped next by the CIJ printer, the current stroke 40, 41, is determined which indicates the locations of the substrate 100 at which ink drops 12 are to be applied in order to create dots.
  • RIP raster image processor
  • step 125 This information is then forwarded on the one hand in step 125 as input to the data processing system 75, which is implemented here with a separate processor, which enables the comparison between the signal to be printed and an image of the print that has been carried out, which is carried out here as a CCD camera Monitoring means 80 is forwarded to the data processing system 75, performs.
  • the charging voltage calculator 70 calculates from it - preferably taking into account the information which stroke or strokes were printed a short time before and possibly which stroke or strokes are printed immediately afterwards - in step 130 the charging voltage corresponding to the stroke belonging to the stroke Drops must be applied so that they land at the desired location on the substrate so that they can be applied to the charging electrode 25 when it is flying past.
  • Process step 130 therefore also preferably takes place on a separate processor core or processor core.
  • the charging electrode 25 is then activated in step 140 when the actual printing process is carried out and charges drops 12 of the continuous stream of ink droplets, so that they are separated from the current of the deflection plate 30 by the deflection voltage applied to the deflection plate 30 Uncharged ink droplets 12a flying towards the catcher tube 35 are deflected and applied to the substrate 100.
  • a "Print-GO" signal is generated, e.g. when an object to be printed, which passes the CIJ printer and is to be printed in the process, reaches a defined position relative to the CIJ printer. This then triggers the printing, if necessary after an adapted waiting time, starting with the first stroke 40, 41; it can be useful to wait for a specifiable waiting time between successive strokes 40, 41.
  • a camera image is recorded as step 150, preferably with an optical monitoring means 80 designed here as a CCD camera. This can be triggered, for example using the print-go signal as a time reference frame.
  • the image data of the camera image are then forwarded to a data processing system 75 and evaluated in step 160.
  • step 160 If the evaluation in step 160 gives indications of a malfunction or a printing error, an error warning or a printing stop can be triggered in step 170. Otherwise, processing can be continued by jumping back to step 120, in particular if the next stroke 40, 41 has not yet been calculated. When returning to step 120, however, a further stroke that has already been calculated can also be read out from a local memory which is preferably managed according to the FIFO principle.
  • FIG. 2a an example of a bitmap 190 to be printed and that in Figure 2b
  • the image of an ink drop 12 in the print image 195 recorded by the optical monitoring means 80 typically comprises between 10 and 20 pixels; the exact value naturally depends on the resolution of the optical monitoring means 80 used in each case and its geometric arrangement relative to printing substrate 100 dependent.
  • bitmap 190 which can in particular also be used for a teach-in process according to the invention, is formed by a sequence of all dot or ink drop combinations that can be written with a five-dot stroke 40, 41, that is, all possible strokes 40, 41 that are actually executed by a printer that writes five drops wide.
  • the print images of the individual strokes 40, 41 recorded by the optical monitoring means 80 can, however, be used as the target image that should arise in response to the print command for this stroke 40, 41 when using the teaching according to the invention, which results in a very fast evaluation leads.
  • the stroke-based approach enables an extremely simple learning process that can ultimately even make it possible to operate an optical monitoring means 80 on a CIJ printer as a real plug-and-play module and to use the in Figure 4 is shown schematically.
  • an optical monitoring means 80 In order to teach-in an optical monitoring means 80 after installation, one only has to generate at least one defined sequence of all strokes 40, 41, i.e. all possible combinations of written ink drop positions in a stroke 40, 41, as a bitmap under the later operating conditions in step 210, and this sequence in Print step 220 on substrate 100.
  • This print image is then recorded in step 230 with the optical monitoring means 80 designed as a camera and at least one corresponding camera image is evaluated in step 240, preferably in order to obtain expected values for ink drop positions of the individual strokes 40, 41.
  • the position of the ink droplets 12 on the CCD chip of the optical monitoring means (80) designed as a camera in a y-direction that corresponds to the deflection direction of the Ink drop 12 corresponds, as expected ink drop positions logically connected or assigned.
  • the distance between the images of the individual strokes 40, 41 on the CCD chip of the optical monitoring means 80 designed as a camera information is obtained as to which x-positions on the CCD chip of the optical monitoring means 80 designed as a camera are ink drops of an n-th stroke 40, 41 of a predetermined sequence of strokes 40, 41 is to be expected.
  • bitmap 90, 190 is then printed in real operation after the learning process
  • This input can then be converted directly into a set of expected pixel positions for the ink drops 12 belonging to this stroke 40, 41 and a check can be made to determine whether the corresponding pixels are set in the camera image. Even if the If the drop position should have moved slightly, this ensures that the newly added drops 12 can be found quickly, and by analyzing deviations, on the one hand, by comparing the acceptance ranges to be determined, one can determine whether the print is still acceptable or not, while on the other hand, there may already be indications the problems at hand, which cause a deviation from the target position, can be obtained.

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  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Ink Jet (AREA)
EP19161144.1A 2019-03-06 2019-03-06 Procédé de fonctionnement d'une imprimante jet d'encre continu à surveillance optique de la qualité d'impression, imprimante à jet d'encre continu à surveillance optique de la qualité d'impression et procédé d'apprentissage d'une imprimante à jet d'encre continu à surveillance optique de la qualité d'impression Active EP3705295B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP19161144.1A EP3705295B1 (fr) 2019-03-06 2019-03-06 Procédé de fonctionnement d'une imprimante jet d'encre continu à surveillance optique de la qualité d'impression, imprimante à jet d'encre continu à surveillance optique de la qualité d'impression et procédé d'apprentissage d'une imprimante à jet d'encre continu à surveillance optique de la qualité d'impression
US17/436,437 US11858267B2 (en) 2019-03-06 2019-12-10 Method for operating a CIJ printer with optical monitoring of printing quality, CIJ printer with optical monitoring of printing quality, and method for teaching-in a CIJ printer with optical monitoring of printing quality
JP2021552743A JP7332707B2 (ja) 2019-03-06 2019-12-10 プリント品質の光学モニタリングを用いるｃｉｊプリンタを動作させる方法、プリント品質の光学モニタリングを用いるｃｉｊプリンタ及びプリント品質の光学モニタリングを用いるｃｉｊプリンタをティーチングする方法
PCT/EP2019/084488 WO2020177912A1 (fr) 2019-03-06 2019-12-10 Procédé servant à faire fonctionner une imprimante à jet d'encre continu équipée d'une surveillance optique de la qualité d'impression, imprimante à jet d'encre continu équipée d'une surveillance optique de la qualité d'impression, et procédé d'instruction d'une imprimante à jet d'encre continu équipée d'une surveillance optique de la qualité d'impression
CN201980093684.5A CN113543977B (zh) 2019-03-06 2019-12-10 操作具有打印质量光学监视的cij打印机的方法、这种cij打印机及其示教方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19161144.1A EP3705295B1 (fr) 2019-03-06 2019-03-06 Procédé de fonctionnement d'une imprimante jet d'encre continu à surveillance optique de la qualité d'impression, imprimante à jet d'encre continu à surveillance optique de la qualité d'impression et procédé d'apprentissage d'une imprimante à jet d'encre continu à surveillance optique de la qualité d'impression

Publications (2)

Publication Number Publication Date
EP3705295A1 true EP3705295A1 (fr) 2020-09-09
EP3705295B1 EP3705295B1 (fr) 2023-04-19

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EP19161144.1A Active EP3705295B1 (fr) 2019-03-06 2019-03-06 Procédé de fonctionnement d'une imprimante jet d'encre continu à surveillance optique de la qualité d'impression, imprimante à jet d'encre continu à surveillance optique de la qualité d'impression et procédé d'apprentissage d'une imprimante à jet d'encre continu à surveillance optique de la qualité d'impression

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US (1) US11858267B2 (fr)
EP (1) EP3705295B1 (fr)
JP (1) JP7332707B2 (fr)
CN (1) CN113543977B (fr)
WO (1) WO2020177912A1 (fr)

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US20010040599A1 (en) * 1999-12-03 2001-11-15 Imaje S.A. Easy to make printer and process for embodiment
US20100073411A1 (en) * 2007-02-23 2010-03-25 Hitachi Industrial Equipment Systems Co., Ltd. Ink Jet Recording Device
US20130194331A1 (en) * 2012-01-26 2013-08-01 James A. Katerberg Control element for printed drop density reconfiguration

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US6003980A (en) * 1997-03-28 1999-12-21 Jemtex Ink Jet Printing Ltd. Continuous ink jet printing apparatus and method including self-testing for printing errors
JPH11198360A (ja) 1998-01-20 1999-07-27 Hitachi Ltd インクジェット記録装置
DE60225267D1 (de) * 2001-05-03 2008-04-10 Jemtex Ink Jet Printing Ltd Tintenstrahldrucker und -verfahren
FR2948602B1 (fr) * 2009-07-30 2011-08-26 Markem Imaje Dispositif de detection de directivite de trajectoires de gouttes issues de jet de liquide, capteur electrostatique, tete d'impression et imprimante a jet d'encre continu devie associes
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EP3845902B1 (fr) 2017-06-23 2022-09-14 NanoTemper Technologies GmbH Procédés de mesure d'interactions inter- et/ou intra-moléculaires

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US20010040599A1 (en) * 1999-12-03 2001-11-15 Imaje S.A. Easy to make printer and process for embodiment
US20100073411A1 (en) * 2007-02-23 2010-03-25 Hitachi Industrial Equipment Systems Co., Ltd. Ink Jet Recording Device
US20130194331A1 (en) * 2012-01-26 2013-08-01 James A. Katerberg Control element for printed drop density reconfiguration

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C. WEBER, ZEITSCHRIFT FÜR ANGEWANDTE MA THEMATIK UND MECHANIK, vol. 11, 1931

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Publication number Publication date
JP7332707B2 (ja) 2023-08-23
JP2022525508A (ja) 2022-05-17
US20220169022A1 (en) 2022-06-02
CN113543977B (zh) 2023-09-29
EP3705295B1 (fr) 2023-04-19
CN113543977A (zh) 2021-10-22
WO2020177912A1 (fr) 2020-09-10
US11858267B2 (en) 2024-01-02

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