EP0115180A2 - Betreiben eines Tintenstrahls - Google Patents

Betreiben eines Tintenstrahls Download PDF

Info

Publication number
EP0115180A2
EP0115180A2 EP83307850A EP83307850A EP0115180A2 EP 0115180 A2 EP0115180 A2 EP 0115180A2 EP 83307850 A EP83307850 A EP 83307850A EP 83307850 A EP83307850 A EP 83307850A EP 0115180 A2 EP0115180 A2 EP 0115180A2
Authority
EP
European Patent Office
Prior art keywords
ink
droplets
pulse
electrical pulses
orifice
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
EP83307850A
Other languages
English (en)
French (fr)
Other versions
EP0115180A3 (en
EP0115180B1 (de
Inventor
Stephen Jay Liker
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.)
Ricoh Printing Systems America Inc
Original Assignee
Exxon Research and Engineering Co
Ricoh Printing Systems America Inc
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 Exxon Research and Engineering Co, Ricoh Printing Systems America Inc filed Critical Exxon Research and Engineering Co
Priority to AT83307850T priority Critical patent/ATE51582T1/de
Publication of EP0115180A2 publication Critical patent/EP0115180A2/de
Publication of EP0115180A3 publication Critical patent/EP0115180A3/en
Application granted granted Critical
Publication of EP0115180B1 publication Critical patent/EP0115180B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04595—Dot-size modulation by changing the number of drops per dot
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04581—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on piezoelectric elements
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04588—Control methods or devices therefor, e.g. driver circuits, control circuits using a specific waveform
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/0459—Height of the driving signal being adjusted
    • 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
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2121—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter
    • B41J2/2128—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter by means of energy modulation
    • 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/06—Heads merging droplets coming from the same nozzle

Definitions

  • the present invention relates to controlling the volume of ink droplets ejected from a drop on demand ink jet apparatus, and more specifically though not exclusively to a method for operating an ink jet apparatus for providing selective control within a range of either the volume of the ink droplets ejected by the apparatus and/or the amount of ink striking a desired location on a recording medium.
  • the volume of each individual ink droplet is typically dependent upon the geometry of the ink jet apparatus, the type of ink used, and the magnitude of the pressure force developed within the ink chamber of the ink jet rejecting an ink droplet from an associated orifice.
  • the effective diameter and design of the orifice, the volume and configuration of the ink chamber associated with the orifice, the transducer design, and the method of coupling the transducer to the ink chamber are all factors determining the volume of individual ink droplets ejected from the orifice.
  • control over the volume of the ejected ink droplets can only be obtained from a narrow range by varying the amplitude of the electrical pulses or dry voltage applied to the individual transducers of the ink jet apparatus or array.
  • a method for controlling the volume of ink droplets ejected from a drop on demand ink jet apparatus including transducer means operable for producing a pressure disturbance within an associated ink chamber, for ejecting an ink droplet from an associated orifice, the method being characterised in that it comprises operating said transducer means in an iterative manner, for producing a plurality of successive pressure disturbances within said ink chamber, for causing a plurality of ink droplets to be ejected from said orifice within a time period permitting said droplets to merge either while air-borne or upon striking a recording medium.
  • apparatus for controlling the volume of ink droplets ejected from a drop on demand ink jet apparatus characterised in that it comprises transducer means operable for producing a pressure disturbance within an associated ink chamber, for ejecting an ink droplet from an associated orifice, and means operable for operating said transducer means in an iterative manner, for producing a plurality of successive pressure disturbances within said ink chamber, for causing a plurality of ink droplets to be ejected from said orifice within a time period permitting said droplets to merge either while air-borne or upon striking a recording medium.
  • the transducer can be operated for causing a plurality of successively higher, lower, or equal velocity ink droplets, or some combination thereof, to be ejected from the orifice of the ink jet. It has been found that when putting the invention into effect, broader control of the boldness and toning of printing can be obtained.
  • the volume of ink striking a recording medium at a given point is thereby partly determined by the number of ink droplets merged prior to striking or at the point of striking.
  • the illustrative ink jet apparatus includes a chamber 200 having an orifice 202 for ejecting droplets of ink in response to the state of energization of a transducer 204 for each jet in an array of such jets (see Fig. 3).
  • the transducer 204 expands-and contracts (in directions indicated by the arrows in Fig. 2) along its axis of elongation, and the movement is coupled to the chamber 200 by coupling means 206 which includes a foot 207, a visco-elastic material 208 juxtaposed to the foot 207, and a diaphragm 210 which is preloaded to the position shown in Figures 1 and 2.
  • the inlet 214 comprises an opening in a restrictor plate 216 (see Fig. 3).
  • the reservoir 212 which is formed in a chamber plate 220 includes a tapered edge 222 leading into the inlet 214.
  • the reservoir 212 is supplied with a feed tube 223 and a vent tube 225.
  • the reservoir 212 is complient by virtue of the diaphragm 210, which is in communication with the ink through a large opening 227 in the restrictor plate 216 which is juxtaposed to an area of relief 229 in the plate 226.
  • each one of the transducers 204 is guided by the cooperation of a foot 207 with a hole 224 in a plate 226. As shown, the feet 207 are slideably retained within the holes 224.
  • the other extremities of each one of the transducers 204 are compliantly mounted in a block 228 by means of a compliant or elastic material 230 such as silicon rubber.
  • the compliant material 230 is located in slots 232 (see Fig. 3) so as to provide support for the other extremities of the transducers 204.
  • Electrical contact with the transducers 204 is also made in a compliant manner by means of a compliant printed circuit 234, which is electrically coupled by suitable means such as solder 236 to an electrode 260 of the transducers 204.
  • Conductive patterns 238 are provided on the printed circuit 234.
  • the plate 226 (see Figures 1 and 3) includes wholes 224 at the base of a slot 237 which receive the feet 207 of the transducers 204, as previously mentioned.
  • the plate 226 also includes a receptacle 239 for a heater sandwich 240, the latter including a heater selement 242 with coils 244, a hold down plate 246, a spring 248. associated with the plate 246, and a support plate 250 located immediately beneath the heater 240.
  • the slot 253 is for receiving a thermistor 252, the latter being used to provide monitoring of the temperature of the heater element 242.
  • the entire heater 240 is maintained within the receptacle in the plate 226 by a cover plate 254.
  • FIG. 3 the variously described components of the ink jet apparatus are held together by means of screws 256 which extend upwardly through openings 257, and screws 258 which extend downwardly through openings 259, the latter to hold a printed circuit board 234 in place on the plate 228.
  • the dashed lines in Fig. 1 depict connections 263 to the printed circuits 238 on the printed circuit board 234.
  • the connections 263 connect a controller 261 to the ink jet apparatus, for controlling the operation of the latter.
  • the controller 261 is programmed to at an appropriate time, via its connection to the printed circuits 238, apply a voltage to a selected one or ones of the hot electrodes 260 of the transducers 204.
  • the applied voltage causes an electric field to be produced transverse to the axis of elongation of the selected transducers 204, causing the transducers 204 to contract along their elongated axis.
  • a particular transducer 204 so contracts upon energization (see Fig. 5)
  • the portion of the diaphram 210 located below the foot 207 of the transducer 204 moves in the direction of the contracting transducer 204, thereby effectively expanding the volume of the associated chamber 200.
  • the controller 261 is programmed to remove the voltage or drive signal from the particular one or ones of the selected transducers 204, causing the transducer 204 or transducers 204 to return to their deenergized states as shown in Fig. 4.
  • the drive signals are terminated in a step like fashion, causing the transducers 204 to very rapidly expand along their elongated axis, whereby via the visco-elastic material 208 the feet 207 of the transducers 204 push against the area of the diaphram 210 beneath them, causing a rapid contraction or reduction of the volume of the associated chamber or chambers 200.
  • this rapid reduction in the volume of the associated chambers 200 creates a pressure pulse or positive pressure disturbance within the chambers 200, causing an ink droplet to be ejected from the associated orifices 202.
  • a given transducer 204 when so energized, it both contracts or reduces its length and increases its thickness.
  • the increase in thickness is of no consequence to the illustrated ink jet apparatus, in that the changes in length of the transducer control the operation of the individual ink jets of the array. Also note, that with present technology, by energizing the transducers for contraction along their elongated axis, accelerated aging of the transducers 204 is avoided, and in extreme cases, depolarization is also avoided.
  • the pulses shown in Figure 6 are applied via controller 261 to one of the transducers204.
  • the first and second pulses 1 and 3 respectively each have an exponential leading edge and a substantially linear trailing edge, respectively, peak amplitudes + V 1 , + V 2 volts respectively, and pulse widths of T l , T 2 , respectively.
  • the shapes of the pulses 1,3, respectively may be other than as illustrated herein, depending upon the particular ink jet device being driven and the particular application.
  • the peak amplitude plus + V 2 of pulse 3 is greater than the peak amplitude V I of pulse 1, and the fall time for the trailing edge of pulse 3 is less than the fall time for the trailing edge of pulse 1.
  • the degree of contraction of the selected transducer 204 is directly related within a range to the amplitude of the pulse applied to the transducer, the greater the amplitude, the greater the degree of contraction. Accordingly, upon termination of a particular operating or control pulse, the magnitude of the pressure disturbance produced in the associated chamber 200 will be directly related within a range to the amplitude of the previously applied control pulse. Also, the greater the slope or the less the fall time of the trailing edge of the control pulse, the more rapid the expansion or elongation of the selected transducer 204 to its rest state upon termination of the control pulse. Correspondingly, the greater the rate of expansion of the transducer 204, the greater the magnitude of the resulting pressure disturbance within the associated chamber 200. Assume that the.amplitudes + V 1 and + V 2 of pulses 1,3, respectively, are large enough to ensure ejection of an ink droplet from associated orifice 202 upon termination of these pulses, respectively.
  • pulse 1 is applied to a selected one of transducers 204.
  • a typical ink droplet 5 will be ejected from the associated orifice 202.
  • pulse 3 is applied to the selected transducer 204.
  • a second ink droplet 7 will be ejected from the associated orifice 202 as shown in Figure 8, for example.
  • Ink droplet 7 will have a substantially greater velocity than the air-borne ink droplet 5 because the amplitude of pulse 3 is greater of that than pulse 1 and the fall time of pulse 3 is less than that of pulse 1.
  • the velocity of the second ink droplet 7 will be greater than that of ink droplet 5 so long as at least one of either the amplitude of pulse 3 is greater than that of pulse 1 even if the fall times of these pulses are equal, or the fall time of pulse 3 is less than that of pulse 1 even if their amplitudes are equal. Accordingly, either amplitude control of the control pulses, or trailing edge fall time control of the control pulses or a combination of the two can be used to produce a higher velocity second droplet 7 as illustrated in Figure 8, for example.
  • the velocity of the second ink droplet 7 can be made high enough to cause droplet 7 to catch up with droplet 5 while each is air-borne, causing these droplets to begin to merge together as shown in Figure 9. Assuming sufficient flight time, the merger of droplets 5 and 7 may result in a droplet shape as shown in Figure 10 prior to the merged droplets striking a recording medium. Alternatively, depending upon the relative speeds (successively higher or lower) of the droplets and movement of the recording media, the droplets can be made to strike the recording media at the same point or spot, without merging while air-borne, thereby obtaining the same result.
  • the size of the ink droplet or volume of ink striking a recording media at a particular point is substantially increased relative to using only a single droplet, and such control of the volume of ink directly provides control of the boldness of printing.
  • Typical values for the parameters of pulses 1,3 used by the inventor in conducting his experiments were 28 volts and 30 volts for + V 1 , + V 2 , respectively; 60 microseconds for each one of the pulse widths T 1 and T 2 ; and fall times of 2 microseconds and 1 microsecond for pulses 1,3, respectively.
  • the viscosity of the ink in this example was 12 centipoise.
  • the approximate diameter of droplet 5 was 1.8 mils
  • for the second ink droplet 7 was 2.2 mils
  • for the merged ink droplet 9 was 4.0 mils.
  • Other ink droplet diameters or volumes may be obtained within a range via control of the amplitudes and fall times of pulses 1 and 3, as previously mentioned.
  • control of the size of ink droplets ejected from the ink jet device can be controlled by adjusting the amplitudes and fall times of the control pulses applied to the ink jet device.
  • the range of control of the volume of ink or ultimate ink droplet size striking a recording media is substantially extended via another embodiment of the present invention for merging a plurality of ink droplets in flight or at the point of striking a recording media.
  • the amplitudes + V 1 , + V 2 of pulses 11, 13, respectively, are shown to be equal (typically 30 volts, for example).
  • the trailing edge of pulse 11 is about 10 microseconds in fall time, whereas the trailing edge of pulse 13 has a fall time of about 1 microsecond.
  • the ink droplet resulting from the application of pulse 11 to a selected transducer 204 will have a velocity that is substantially slower than the velocity of the following ink droplet resulting from the application of pulse 3 to the transducer 204. Accordingly, only fall time control is being used to adjust the velocities of the ink droplets resulting from the application of pulses 1 and 3.
  • it is assumed that the second ejected higher velocity ink droplet will merge with the first ejected ink droplet while air-borne or at the point of striking a recording media, as previously described.
  • a third control or firing pulse 15 has been added following the termination of pulse 13.
  • the present inventor set the amplitude of pulses 11, 13, 15 all at 30 volts (+ V 1 , + V 2 and + V 3 all equal 30 volts), with pulses 11, 13 and 15 typically having exponential fall times of 10 microseconds, 5 microseconds and 1 microsecond, respectively; and pulse widths of 60 microseconds, 40 microseconds and 30 microseconds, respectively, for example.
  • pulse 11 When applied to a selected transducer 204 of the given ink jet device, pulse 11 caused a first ink droplet to be ejected, pulse 13 caused a second ink droplet of greater velocity than the first to be ejected, and pulse 15 caused a third ink droplet of even greater velocity to be ejected, whereby all of these ink droplets were of such relative velocities that they merged in flight prior to striking a recording media. In this manner, an even greater range of control can be obtained for adjusting the size of an ink droplet in an ink jet system.
  • ink droplets can be ejected at correspondingly greater velocities in order to permit merger in flight or at the point of striking, providing even greater control of ink droplet size from one marking position to another on a recording medium.
  • an ink droplet is not ejected immediately after the termination of a particular firing pulse.
  • an ink droplet 5 is ejected 4 microseconds after the termination of pulse 1
  • the second ink droplet is ejected 3 microseconds after the termination of pulse 3.
  • the velocity of the first ejected ink droplet was measured to be 3.5 meters per second and of the second ejected ink droplet 5.0 meters per second.
  • the combination of waveshapes shown cause the ink jet apparatus to emit two droplets, which merge at a common point of striking on a print medium to produce dots varying in diameter from 5.3 to 5.6 milliinches, for producing very bold print.
  • T l , T 2 , T 3 , and T 4 are 80, 4, 18 and 6 microseconds, respectively, with the amplitudes of pulses 17 and 19 at 110 volts, and pulse 21 at about 73 volts, for producing the previous dot diameter range on a particular type of paper (Hammermill XEROCOPY, manufactured by Hammermill Papers Co., Inc., Erie, PA), using an ink having a wax base.
  • the type of paper and ink formulation affects the dot diameter in a given application.
  • the fall time of pulses 17 and 19 are 9 microseconds and 1.0 microseconds, respectively.
  • a first droplet having a velocity ranging from 8 to 10 meters per second was produced.
  • the combination of pulses 19 and 21, caused a second droplet to be produced about 2 microseconds after the termination of pulse 19.
  • Pulse 21 is not of sufficient amplitude to cause a third droplet to be produced, but does cause the second droplet to breakoff earlier from the orifice of the ink jet relative to operating without pulse 21.
  • pulse 21 permits higher frequency operation of the ink jet apparatus, and reduced ink blobbing problems at the orifice.
  • the velocity of the second droplet is typically 6 to 8 meters per second.
  • the slower velocity of the second droplet relative to the first droplet is caused by the presence of pulse 21.
  • the velocity of the second droplet can be increased.
  • the boldness can be modulated within a range.
  • the droplets can be made to strike the recording medium at substantially the same spot or point, and are thereby merged at that point for producing a desired dot size.
  • the shapes of the waveforms used to drive the ink jet apparatus can be designed to cause successively produced ink droplets to have successively higher or lower relative velocities, or some combination thereof, so long as system timing permits the droplets to strike the recording medium at substantially the same point. In this manner, one droplet or a plurality of ink droplets can be selectively chosen for printing a dot of desired boldness at a point on a recording medium.
  • the controller 261 can be provided via hardwired logic, or by a microprocessor programmed for providing the necessary control functions, or by some combination of the two, for example. Note that a Wavetek Model 175 waveshape generator, manufactured by Wavetek, San Diego, California, was used by the present inventor to obtain the waveshapes shown in Figures 6, 11, 12, 13, 14 and 15. In a practical system, a controller 261 would typically be designed for providing the necessary waveshapes and functions, as previously mentioned, for each particular application.

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Surgical Instruments (AREA)
EP83307850A 1982-12-27 1983-12-22 Betreiben eines Tintenstrahls Expired - Lifetime EP0115180B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83307850T ATE51582T1 (de) 1982-12-27 1983-12-22 Betreiben eines tintenstrahls.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45329582A 1982-12-27 1982-12-27
US453295 1982-12-27

Publications (3)

Publication Number Publication Date
EP0115180A2 true EP0115180A2 (de) 1984-08-08
EP0115180A3 EP0115180A3 (en) 1985-11-06
EP0115180B1 EP0115180B1 (de) 1990-04-04

Family

ID=23799976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83307850A Expired - Lifetime EP0115180B1 (de) 1982-12-27 1983-12-22 Betreiben eines Tintenstrahls

Country Status (5)

Country Link
EP (1) EP0115180B1 (de)
JP (1) JPH07108568B2 (de)
AT (1) ATE51582T1 (de)
CA (1) CA1232490A (de)
DE (1) DE3381406D1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3513442A1 (de) * 1984-04-16 1985-10-17 Exxon Research And Engineering Co., Florham Park, N.J. Verfahren zum selektiven, mehrzyklischen, der steuerung der punktgroesse dienenden resonanzbetrieb einer tintenstrahlvorrichtung
EP0194852A2 (de) * 1985-03-11 1986-09-17 Dataproducts Corporation Antriebssystem für ein Tintenstrahlgerät
EP0609997A2 (de) * 1993-02-05 1994-08-10 Hewlett-Packard Company Verfahren zur Reduzierung der Antriebsenergie in einem thermischen Tintenstrahlschnelldrucker
WO1998008687A1 (en) * 1996-08-27 1998-03-05 Topaz Technologies, Inc. Inkjet print head for producing variable volume droplets of ink
EP0827838A2 (de) * 1996-09-09 1998-03-11 Seiko Epson Corporation Tintenstrahldrucker und Tintenstrahldruckverfahren
WO1998051504A1 (en) * 1997-05-15 1998-11-19 Xaar Technology Limited Operation of droplet deposition apparatus
EP0885732A1 (de) * 1997-06-19 1998-12-23 Canon Kabushiki Kaisha Tintenstrahldruck-Verfahren und -Vorrichtung
EP0737586B1 (de) * 1995-04-14 1999-10-13 Seiko Epson Corporation Tintenstrahlaufzeichnungsgerät und Verfahren zum Tintenstrahldrucken
WO2001021408A1 (fr) * 1999-09-21 2001-03-29 Matsushita Electric Industrial Co., Ltd. Tete d'imprimante a jet d'encre et imprimante a jet d'encre

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61293885A (ja) * 1985-06-21 1986-12-24 Sharp Corp カラ−印刷物の製造方法
JPH10278256A (ja) * 1997-04-01 1998-10-20 Minolta Co Ltd インクジェット記録装置
JP3842886B2 (ja) 1997-12-16 2006-11-08 ブラザー工業株式会社 インク滴噴射方法及びその装置
JPH11334068A (ja) * 1998-05-26 1999-12-07 Brother Ind Ltd インク噴射装置
JP2002086765A (ja) * 2000-09-13 2002-03-26 Matsushita Electric Ind Co Ltd インクジェットヘッド及びインクジェット式記録装置
US6793311B2 (en) 2001-10-05 2004-09-21 Matsushita Electric Industrial Co., Ltd. Ink jet recording apparatus
US7219970B2 (en) * 2003-10-14 2007-05-22 Hewlett-Packard Development Company, L.P. Method and a system for single ligament fluid dispensing
JP2004155209A (ja) * 2004-02-26 2004-06-03 Brother Ind Ltd インク滴噴射装置
JP4529120B2 (ja) 2004-03-02 2010-08-25 セイコーエプソン株式会社 液体噴射装置
EP3508344B1 (de) 2016-08-31 2021-11-03 Konica Minolta, Inc. Tintenstrahlaufzeichnungsvorrichtung und tintenstrahlaufzeichnungsverfahren

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2615713A1 (de) * 1975-04-11 1976-10-21 Matsushita Electric Ind Co Ltd Tintenstrahlschreiber
US4112433A (en) * 1975-11-21 1978-09-05 Xerox Corporation Meniscus dampening drop generator
US4184168A (en) * 1977-10-25 1980-01-15 Ricoh Company, Ltd. Ink-on-demand type ink jet head driving circuit
US4222060A (en) * 1978-11-20 1980-09-09 Ricoh Company, Ltd. Ink jet printing apparatus
US4266232A (en) * 1979-06-29 1981-05-05 International Business Machines Corporation Voltage modulated drop-on-demand ink jet method and apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56126172A (en) * 1980-03-10 1981-10-02 Hitachi Ltd Liquid drop injector
JPS57160654A (en) * 1981-03-31 1982-10-04 Fujitsu Ltd Recording method in ink jet recording device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2615713A1 (de) * 1975-04-11 1976-10-21 Matsushita Electric Ind Co Ltd Tintenstrahlschreiber
US4112433A (en) * 1975-11-21 1978-09-05 Xerox Corporation Meniscus dampening drop generator
US4184168A (en) * 1977-10-25 1980-01-15 Ricoh Company, Ltd. Ink-on-demand type ink jet head driving circuit
US4222060A (en) * 1978-11-20 1980-09-09 Ricoh Company, Ltd. Ink jet printing apparatus
US4266232A (en) * 1979-06-29 1981-05-05 International Business Machines Corporation Voltage modulated drop-on-demand ink jet method and apparatus

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3513442C2 (de) * 1984-04-16 1998-06-04 Dataproducts Corp Verfahren zum Betreiben eines Tintenstrahldruckers
DE3513442A1 (de) * 1984-04-16 1985-10-17 Exxon Research And Engineering Co., Florham Park, N.J. Verfahren zum selektiven, mehrzyklischen, der steuerung der punktgroesse dienenden resonanzbetrieb einer tintenstrahlvorrichtung
EP0194852A2 (de) * 1985-03-11 1986-09-17 Dataproducts Corporation Antriebssystem für ein Tintenstrahlgerät
EP0194852A3 (en) * 1985-03-11 1988-10-19 Dataproducts Corporation Operating an ink jet apparatus
EP0609997A3 (de) * 1993-02-05 1995-04-12 Hewlett Packard Co Verfahren zur Reduzierung der Antriebsenergie in einem thermischen Tintenstrahlschnelldrucker.
US5600349A (en) * 1993-02-05 1997-02-04 Hewlett-Packard Company Method of reducing drive energy in a high speed thermal ink jet printer
EP0609997A2 (de) * 1993-02-05 1994-08-10 Hewlett-Packard Company Verfahren zur Reduzierung der Antriebsenergie in einem thermischen Tintenstrahlschnelldrucker
EP0737586B1 (de) * 1995-04-14 1999-10-13 Seiko Epson Corporation Tintenstrahlaufzeichnungsgerät und Verfahren zum Tintenstrahldrucken
US6151050A (en) * 1995-04-14 2000-11-21 Seiko Epson Corporation Ink jet recording apparatus for adjusting time constant of expansion/contraction of piezoelectric element
US6086189A (en) * 1995-04-14 2000-07-11 Seiko Epson Corporation Ink jet recording apparatus for adjusting time constant of expansion/contraction of piezoelectric element
WO1998008687A1 (en) * 1996-08-27 1998-03-05 Topaz Technologies, Inc. Inkjet print head for producing variable volume droplets of ink
US6328395B1 (en) 1996-09-09 2001-12-11 Seiko Epson Corporation Ink jet printer and ink jet printing method
EP0827838A3 (de) * 1996-09-09 1999-08-04 Seiko Epson Corporation Tintenstrahldrucker und Tintenstrahldruckverfahren
EP0827838A2 (de) * 1996-09-09 1998-03-11 Seiko Epson Corporation Tintenstrahldrucker und Tintenstrahldruckverfahren
EP1366919A3 (de) * 1996-09-09 2004-02-18 Seiko Epson Corporation Tintenstrahldrucker und Tintenstrahldruckverfahren
EP1332876A3 (de) * 1996-09-09 2003-11-26 Seiko Epson Corporation Tintenstrahldrucker und Druckverfahren
WO1998051504A1 (en) * 1997-05-15 1998-11-19 Xaar Technology Limited Operation of droplet deposition apparatus
US6281913B1 (en) 1997-05-15 2001-08-28 Xaar Technology Limited Operation of droplet deposition apparatus
EP0885732A1 (de) * 1997-06-19 1998-12-23 Canon Kabushiki Kaisha Tintenstrahldruck-Verfahren und -Vorrichtung
US6464329B1 (en) 1997-06-19 2002-10-15 Canon Kabushiki Kaisha Ink-jet printing method and apparatus
US6312096B1 (en) 1997-06-19 2001-11-06 Canon Kabushiki Kaisha Ink-jet printing method and apparatus
US6488349B1 (en) 1999-09-21 2002-12-03 Matsushita Electric Industrial Co., Ltd. Ink-jet head and ink-jet type recording apparatus
WO2001021408A1 (fr) * 1999-09-21 2001-03-29 Matsushita Electric Industrial Co., Ltd. Tete d'imprimante a jet d'encre et imprimante a jet d'encre

Also Published As

Publication number Publication date
DE3381406D1 (de) 1990-05-10
EP0115180A3 (en) 1985-11-06
JPH07108568B2 (ja) 1995-11-22
CA1232490A (en) 1988-02-09
EP0115180B1 (de) 1990-04-04
ATE51582T1 (de) 1990-04-15
JPS59133066A (ja) 1984-07-31

Similar Documents

Publication Publication Date Title
US5285215A (en) Ink jet apparatus and method of operation
US5202659A (en) Method and apparatus for selective multi-resonant operation of an ink jet controlling dot size
EP0115180B1 (de) Betreiben eines Tintenstrahls
US4523200A (en) Method for operating an ink jet apparatus
US4523201A (en) Method for improving low-velocity aiming in operating an ink jet apparatus
EP0194852B1 (de) Antriebssystem für ein Tintenstrahlgerät
EP0159188B1 (de) Verfahren zum Steuern einer Tintenstrahldruckvorrichtung zum Erreichen einer hohen Druckauflösung
US5581286A (en) Multi-channel array actuation system for an ink jet printhead
CA1244714A (en) Method for selective multi-cycle resonant operation of an ink jet apparatus for controlling dot size
JP2881566B2 (ja) 多重トーン印刷方法
US5541627A (en) Method and apparatus for ejecting a droplet using an electric field
EP1213145B1 (de) Betrieb einer Tröpfchen-Niederschlagvorrichtung
EP0596530A2 (de) Tintenstrahlaufzeichnungsgerät
JPS625856A (ja) オンデマンド型インクジエツト印字素子用制御装置
GB1571698A (en) Ink jet printing
CA2162279A1 (en) Droplet volume modulation techniques for ink jet printheads
EP0437062A2 (de) Verfahren und Vorrichtung zum Drucken mit einem auf Abruf arbeitenden Tintenstrahldruckkopf mittels eines elektrischen Feldes
CN101258033B (zh) 用于喷墨打印的液滴的产生方法及设备
US6419336B1 (en) Ink ejector
US6059393A (en) Driving method for an ink ejection device to enlarge print dot diameter
WO2016120923A1 (en) Inkjet printing system and method for controlling inkjet printing system
EP0259541A2 (de) Verfahren zum Graustufendrucken mit einem thermalen Tintenspritzdrucker
EP0090663A1 (de) Methode und Apparat zum Ausstossen von Tintentröpfchen
US4376944A (en) Ink jet print head with tilting nozzle
JPH05318766A (ja) インクジェットヘッドの駆動方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT LI NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT LI NL

17P Request for examination filed

Effective date: 19860424

17Q First examination report despatched

Effective date: 19870917

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DATAPRODUCTS CORPORATION

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB IT LI NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19900404

Ref country code: LI

Effective date: 19900404

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19900404

Ref country code: FR

Effective date: 19900404

Ref country code: CH

Effective date: 19900404

Ref country code: AT

Effective date: 19900404

REF Corresponds to:

Ref document number: 51582

Country of ref document: AT

Date of ref document: 19900415

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3381406

Country of ref document: DE

Date of ref document: 19900510

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19981110

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991222

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19991222

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20021230

Year of fee payment: 20