EP1093924A1 - Imprimante et méthode de commande pour la tête d'impression - Google Patents

Imprimante et méthode de commande pour la tête d'impression Download PDF

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Publication number
EP1093924A1
EP1093924A1 EP00402912A EP00402912A EP1093924A1 EP 1093924 A1 EP1093924 A1 EP 1093924A1 EP 00402912 A EP00402912 A EP 00402912A EP 00402912 A EP00402912 A EP 00402912A EP 1093924 A1 EP1093924 A1 EP 1093924A1
Authority
EP
European Patent Office
Prior art keywords
ink
printer
dilution fluid
supplied
dispensing
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.)
Withdrawn
Application number
EP00402912A
Other languages
German (de)
English (en)
Inventor
Yuji Yakura
Makoto Ando
Kenji Suzuki
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of EP1093924A1 publication Critical patent/EP1093924A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • B41J2/2107—Ink jet for multi-colour printing characterised by the ink properties
    • B41J2/211—Mixing of inks, solvent or air prior to paper contact
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14475—Structure thereof only for on-demand ink jet heads characterised by nozzle shapes or number of orifices per chamber

Definitions

  • the present invention relates to a printer and printer head control method and relates in particular to a printer and printer head control method in ink jet printers for expressing various types of print tones by controlling the diluted ink with dilution fluid.
  • This invention reduces irregularities in the quantity of ink supplied to the dispensing nozzle opening occurring in the related art and can deliver high quality printing by regulating the number of pulses to control the quantity of dilution fluid for diluting the ink.
  • a head 2 of an ink jet printer 1 is comprised of a nozzle plate 4, piezoelectric elements 5K and 5I constituting the drive element, and an oscillator plate 3 in an inner plate P.
  • the inner plate P is formed for instance of plastic by injection molding and constitutes the walls of this head 2.
  • the oscillator plate 3 is formed by a resilient plate shaped member such as a metallic plate.
  • the nozzle plate 4 is formed by a plate shaped member such as metal plate forming a water-repellent coating on the surface.
  • the head 2 is supplied with dilution fluid K and ink I from the respective tanks by way of the supply paths LI and LK through the inner plate P.
  • Buffer tanks 6I and 6K are formed at the base of these supply paths LI and LK and the head 2 stores the ink I and dilution fluid K supplied from the supply paths LI and LK, into these buffer tanks 6I and 6K.
  • the head 2 also supplies the ink I and dilution fluid K stored in the buffer tanks 6I and 6K to the respective pressure chambers 8I and 8K by way of the supply paths 7I and 7K formed in the nozzle plate 4.
  • the pressure chambers 8I and 8K are each formed adjoining the wall 9 and enclosed by the oscillator plate 3 and the nozzle plate 4.
  • the piezoelectric elements 5I and 5K are respectively installed on the oscillator plate 3 for the pressure chambers 8I and 8K by way of the specified plates 10I and 10K.
  • the drive action of the piezoelectric elements 5I and 5K are configured to apply contact pressure to the oscillator plate 3 so that changes can be made in the pressure applied to the ink I and the dilution fluid K held inside the pressure chambers 8I and 8K.
  • the nozzle plate 4 for the pressure chamber 8K on the dilution fluid side is formed with a through hole extending towards the object for printing, and in contact with the pressure chamber 8I (ink side) and wall 9.
  • the dispensing nozzle 11 is comprised by this through hole.
  • This dispensing nozzle 11 is formed in a circular shape in the nozzle plate 4 as shown by the symbol A in the enlarged figure.
  • a through hole is formed extending diagonally towards the dispensing nozzle 11 side in the nozzle plate 4 on the ink side of the pressure chamber 8I.
  • a fixed flow nozzle 12 is comprised by this through hole. This fixed flow nozzle 12 is formed by drilling a hole in a crescent shape in the nozzle plate 4 so as to separate the spray hole 12a by a specified distance r from the dispensing hole 11A of the dispensing nozzle 11.
  • the ink side piezoelectric element 5I is driven in the head 2 as shown in Fig. 9 and the ink I is pressed out from the fixed flow nozzle 12, and supplied to the dispensing outlet 11A of dispensing nozzle 11.
  • the dilution fluid side piezoelectric element 5K is driven to make the dilution fluid K fly outwards from the dispensing nozzle 11, and along with diluting the ink I supplied from the dispensing outlet 11A of nozzle 11, the diluted ink I is made to fly towards the object for printing.
  • the quantity of ink I supplied to the dispensing nozzle 11 side is regulated by driving the ink side piezoelectric element 5I, and various print tones can be expressed in the printing, by adjusting the concentration of the ink I flying towards the object for printing.
  • the head controller 16 in Fig. 8 generates the piezoelectric element 5I and 5K drive signals SI and SK according to print tone data DI output from the host controller.
  • the head controller 16 maintains the dilution ink drive signal SK at a fixed voltage V1K (Fig. 10B), and at a specified period T11 (for instance a 50 microsecond period) and generates an ink drive signal SI (Fig. 10A) to lower the print tone from the specified voltage V1I to a voltage V2I.
  • the controller 16 in this way, emits from the fixed flow nozzle 12, a quantity of ink determined by the difference in electrical potential ⁇ V between voltage V1I and voltage V2I, and supplies the ink to the dispensing outlet 11a of dispensing nozzle 11.
  • the head controller 16 suddenly lowers the drive signal SK (for instance in a period (T1K) of 12 microseconds).
  • the dilution fluid K is in this way made to fly outward from the dispensing nozzle 11, and along with diluting the ink I supplied to dispensing outlet 11a of dispensing nozzle 11, the diluted ink I is made to fly towards the object for printing.
  • the head controller 16 After the ink drive signal SI and dilution fluid drive signal SK have been maintained at the lowered voltage for an interval (for instance a period of 50 microseconds) between specified time T2I and T2K, the head controller 16 raises the voltage back to the original voltage V1I and V1K for a sufficiently long time T3I and T3K (for instance a period of 100 microseconds) versus the lowered voltage time, and a printing cycle for one dot is in this way completed.
  • an interval for instance a period of 50 microseconds
  • multiheads are comprised of a plurality of heads of a structure configured so that a plurality of dots are simultaneously printed in parallel by this multihead to deliver improved printing speed.
  • the ink I pushed out from the fixed flow nozzle 12 is conveyed along the surface of the nozzle plate 4 and supplied to the dispensing nozzle 11.
  • the quantity of ink supplied to this dispensing nozzle 11 varies according to the interval r of the nozzles, and the wettability (water repellency) of the nozzle plate 4 between the nozzles, etc.
  • the dampness of the nozzle plate 4 may vary, causing fluctuations in printing quality during dot printing.
  • the nozzle plate 4 in the dispensing nozzle 11 and the fixed flow nozzle 12 must be finely machined, and irregularities or variations are unavoidable in such type of machining. Therefore, irregularities in the interval r of the nozzles for each head occur in the multihead, making irregularities or variations unavoidable in the quantity of ink flying out from the heads. When irregularities in ink quantity occur in the heads in this way, stripes occur in the dot printing due to the same print tone being produced by each head, so that a drastic decline in print quality occurs.
  • the thinner the printing concentration the weaker the printer contrast
  • the effect of irregularities becomes greater.
  • the greater the effect of irregularities the weaker the reproduction of the print tone becomes, and effects such as stripes become more obvious so that the quality of the printing drastically deteriorates.
  • this invention has the object of providing a printer and printer head control method to reduce irregularities that occur in the related art and deliver high quality printing in the ink quantity supplied to the dispensing nozzle in jet printers that dilute the printing ink with dilution fluid.
  • the printer and printer control method of this invention regulates the ink quantity by controlling the number of drive signal pulses.
  • the printer and printer control method of this invention controls the number of pulses in the drive signal to supply ink droplets with few irregularities or variations so that irregularities in ink quantity due to variations in nozzle interval r and irregularities in ink quantity due to changes in dampness are reduced.
  • Fig. 1 illustrates signal waveforms showing the drive signal of the piezoelectric element for the ink, in the ink jet printer according to an embodiment of the invention.
  • Fig. 2A and Fig. 2B illustrate signal timing waveforms showing the basic waveform of the drive pulses of Fig. 1A through Fig. 1H.
  • Fig. 3 is an oblique view showing the movement of the ink according to the basic waveforms of Fig. 2A and Fig. 2B.
  • Fig. 4A and Fig. 4B illustrate signal waveforms showing the relation of the dilution fluid drive signal with the drive signals of Fig. 1A through Fig.1H.
  • Fig. 5 is a graph showing characteristic curves from results of the drive signals of Fig. 1A through Fig. 1H.
  • Fig. 6 is a table showing drive results from the drive signals of Fig. 1A through Fig. 1H compared with the related art.
  • Fig. 7 is an elevational view showing the head for the ink jet printer of another embodiment.
  • Fig. 8 is a cross sectional view showing an ink jet printer.
  • Fig. 9 is an oblique view showing the movement of the ink by the drive method of the related art.
  • Fig. 10A and Fig. 10B illustrate signal waveforms showing the drive signal by means of the drive method of the related art.
  • Fig. 2 is a signal timing waveform drawing showing the basic waveforms of the drive signal for driving the ink piezoelectric element 5I in the ink jet printer according to an embodiment of the present invention.
  • the ink piezoelectric element 5I in the ink jet printer of this embodiment is driven by combining these basic pulses and the dilution fluid element 5K is also correspondingly driven.
  • the structure is otherwise identical to the ink jet printer 1 described in Fig. 8.
  • Components different from the structure of Fig. 8 are shown with reference numerals in parentheses in the same figure and the following description utilizes Fig. 8. Descriptions of sections identical to the ink jet printer 1 are omitted.
  • the basic waveform as shown here in Fig. 3, supplies drops of ink I to the dispensing outlet 11A of the dispensing nozzle 11 so that the signal level changes within short time periods, and has a pulse waveform with a fixed amplitude.
  • This basic pulse further has a small drop basic waveform SiS for supplying ink I in small drops, and also a large drop basic waveform SiL for supplying ink I in large drops, in proportion to the small drop basic waveform SiS.
  • a drive signal Si is formed for the piezoelectric element 5I in this embodiment, by combining the small drop basic waveform SiS and the large drop basic waveform SiL, according to the ink supply quantity determined by the print tone.
  • the numeral below the waveform indicates the time for each period in microseconds.
  • the signal levels of the basic waveforms SiS and SiL are first raised (for instance in a period of 2 microseconds) so that the volume of the pressure chamber 8I is increased, and afterwards the signal level lowered so that the volume in the pressure chamber 8I can be lowered and the ink I can be pushed out of the fixed flow nozzle 12. Finally, the signal level is raised to the original signal level so that the volume in the pressure chamber 8I can increase.
  • a fixed signal level is maintained for a specified time period (for instance 2 microseconds) until the signal levels start to rise.
  • the voltage of the pressure chamber 8I can be sufficiently stabilized, and the pressure in pressure chamber 8I lowered so that irregularities in the quantity of ink drops being supplied can be reduced.
  • the large drop basic waveform SiL is set so that the amplitude becomes larger and the period that the signal level is low becomes larger compared to the small drop basic waveform SiS (for instance 4 microseconds for the small drop basic waveform SiS, and 9 microseconds for the large drop basic waveform SiL), and that large drops of ink I (compared to the small drops) can be supplied.
  • print tone data D1 for eight print tones including a print tone having dots with no ink adhering are input to the head controller 26.
  • the head controller 26 combines the basic waveforms SiS and SiL and generates the drive signal Si of the piezoelectric element 5I according to this print tone data D1 as shown in Fig. 1.
  • the head controller 26 maintains the ink and dilution fluid drive signals Si and Sk at a fixed signal level (Fig. 1A) at a first print tone having dots with no ink adhering.
  • a piezoelectric element 5I is driven by a drive signal Si2 utilizing only one of the small drop basic waveforms SiS (Fig. 1B).
  • a piezoelectric element 5I is driven by a drive signal Si3 utilizing only one of the large drop basic waveforms SiL (Fig. 1C).
  • a drive signal Si4 (Fig. 1D) is generated by a continuous three small drop basic waveforms SiS
  • a drive signal Si5 is generated (Fig. 1E) by a continuous three large drop basic waveforms SiL.
  • a drive signal Si6 is generated (Fig. 1F) by a continuous five small drop basic waveforms SiS.
  • a drive signal Si7 is generated (Fig. 1G) by a continuous five small drop basic waveforms SiS.
  • a drive signal Si8 is generated (Fig. 1H) per a continuous three large drop basic waveforms SiL.
  • the ink quantity supplied to the dispensing outlet 11A of dispensing nozzle 1 is increased in the head controller 26 according to the print tone.
  • the ink eject printer 21 is configured to regulate the quantity of ink supplied to the dispensing nozzle 11 according to the number of pulses in the drive signal Si. By also at this time, using two pulses having different amplitudes, the quantity of ink is regulated by controlling the amplitude of the pulses, as well as the number of pulses.
  • the head controller 26 By forming drive signals Si in this way, the head controller 26, after allotting the large drop basic waveforms SiL, maintains the drive signal Si signal level at a fixed signal level for a fixed period T (for instance, 5 microseconds) and then allots the basic waveforms SiS and SiL.
  • T for instance, 5 microseconds
  • the head controller 26 can prevent most of the ink quantity from being supplied from the buffer tank 6I at one time, so that irregularities in the quantity of ink drops being supplied can be reduced.
  • the head controller 26 Besides generating the ink drive signal Si, the head controller 26, as shown in Fig. 4, gradually raises the signal level of the dilution fluid drive signal Sk , when a time t1 has elapsed (Figs. 4A and 4B) within a specified time (for instance 13 microseconds) from the time point t0 at which the ink I initially starts to be pushed out by the ink drive signal Si.
  • the head controller 26 in this way supplies the ink I to the dispensing outlet 11A of dispensing nozzle 11 (see reference symbol B of Fig. 8), while pulling the meniscus of the ink I into the pressure chamber 8K through the dispensing nozzle 11, so that the ink I will not spill in dispensing outlet 11A of dispensing nozzle 11.
  • the dilution fluid K from the buffer tank 6K is fed beforehand, effectively utilizing the time period that ink I is supplied to the dispensing outlet 11A of dispensing nozzle 11.
  • the head controller 26 When a sufficient amount of time (in this embodiment, a time t2 at which 140 microseconds has elapsed from time point t0) for the head controller 26 to supply the ink I by utilizing the basic pulses has elapsed, the rise of the dilution fluid drive signal Sk is stopped, and after holding the drive signal Sk signal level at a fixed value for a specified period (for example, 10 microseconds), the signal level is lowered and the dilution fluid K emitted.
  • the head controller 26 in this way, along with diluting the ink I supplied from the dispensing outlet 11A by utilizing the dilution fluid K, causes the diluted ink to fly towards the object for printing.
  • the head controller 26 is configured to print by increasing the concentration of ink according to the print tone.
  • the amount of consumed dilution fluid K, and the total amount of ink and dilution fluid consumed are shown in Fig. 5. Irregularities were measured by utilizing the 32 dispensing nozzle and as shown in Fig. 6, a remarkable reduction in irregularities was verified compared to the related art.
  • Fig. 6 shows results from measuring the second print tone of the signal pulse of Fig. 1B.
  • the ink piezoelectric element 5I, the oscillator plate 3, the pressure chamber 8I and the head controller 26 comprise the ink supply device for supplying the ink A at an ink quantity determined by the print tone, to the dispensing outlet 11A of dispensing nozzle 11.
  • the ink piezoelectric element 5K, the oscillator plate 3, the pressure chamber 8K and the head controller 26 comprise the dilution fluid drive device for making the ink I diluted by the dilution fluid K, fly towards the object for printing.
  • the ink I tank in the ink jet printer 21 (Fig. 8) is filled, the ink I supplied from this tank by way of the supply path LI, is stored in the buffer tank 6I and also supplied to the pressure chamber 8I.
  • the dilution fluid K tank is filled, the dilution fluid K is supplied from this tank by way of the supply path LK, is stored in the buffer tank 6I and also supplied to the pressure chamber 8K.
  • Ink I is supplied from the fixed flow nozzle 12 to the dispensing outlet 11A of dispensing nozzle 11 in the head 22 of the ink jet printer at this time, and the ink I is diluted by the dilution fluid K supplied from the dispensing nozzle 11. This diluted ink I is further made to fly along with the dilution fluid K, towards the object for printing. In this way, printing tasks such as making the ink I adhere in sequential dot shapes in the desired characters on the object for printing are performed.
  • the ink piezoelectric element 5I is repetitively driven by the basic waveforms SiS and SiL, according to print tone data D1 input to the head controller 26. Therefore, in the head 22, the ink I stored in the buffer tank 6I is supplied at intervals to the pressure chamber 8I by way of the supply path 7I. Also, the ink I held in the pressure chamber 8I is supplied at intervals to the dispensing outlet 11A of dispensing nozzle 11 by way of the fixed flow nozzle 12.
  • the head 22 at this time, varies the signal level within a short period, and also varies the volume within chamber 8I by repetitively driving the ink piezoelectric element 5I with basic waveforms SiS and SiL constituted by pulses of a fixed amplitude, so that the ink I is supplied in drops to the dispensing outlet 11 A of dispensing nozzle 11.
  • the irregularities in the ink I can in this way, be remarkably reduced compared to the method of the related art for collecting and supplying the required amount of ink.
  • supplying the ink in drops reduces by a corresponding amount, the contact surface of the ink with the surface of the nozzle plate 4, compared to the method for collecting and supplying the required amount of ink all at one time, so that irregularities in the quantity of ink due to variations in the dampness of the nozzle plate 4 can be reduced.
  • the print tones can therefore be reproduced with better quality (See Fig. 6).
  • the ink I from the spray hole 12a of the fixed flow nozzle 12 elongates in a belt shape and is supplied to the dispensing outlet 11A of dispensing nozzle 11.
  • This ink I is supplied to the dispensing nozzle 11 not only by the movement energy when sent from the fixed flow nozzle 12, but also by suction force of the dispensing outlet 11A (for instance, the capillary action phenomenon of dispensing nozzle 11) etc.
  • a large drop basic waveform SiL to make large changes in the signal level, and a small drop basic waveform SiS to make comparatively small changes in the signal level, are both combined together to drive the ink piezoelectric element 5I.
  • the ink jet printer 21 can in this way express many print tones with a small number of pulses compared to the case of just repetitively issuing one basic pulse. The time required to supply the ink I is therefore shortened by a corresponding amount, and the time required to print one dot can therefore be shortened.
  • the residual oscillation in the piezoelectric element can be suppressed, and changes in the meniscus can be stabilized. Further, changes in the meniscus can also be stabilized by providing a fixed period repeating the basic pulse. Irregularities in the ink quantity of the drops can in this way be reduced and consequently irregularities in the quantity of the ink diluted by the dilution fluid can also be reduced.
  • the piezoelectric element 5K from the time point t1 to the time point t2, to increase the volume of the pressure chamber 8K on the dispensing nozzle 11 side. Further, when the supply of ink I to the dispensing nozzle 11 is finished, the dilution fluid K is emitted in the final 10 microseconds of a specified period (Fig. 4B) and the ink droplets are made to fly out to the paper.
  • the piezoelectric element 5K by driving the piezoelectric element 5K so that the volume on the dispensing nozzle 11 side of the pressure chamber 8K becomes larger, while supplying ink I from the fixed flow nozzle 12, the ink I supplied to the dispensing outlet 11A of dispensing nozzle 11 is suctioned into the vacuum chamber 8K without collecting as drops in the dispensing outlet 11A.
  • the ink drops can be moved from the fixed flow nozzle 12 to the dispensing nozzle 11 under the same conditions as when the supply of ink drops first starts, and irregularities in ink quantity of the small drops and large drops can be decreased.
  • the quantity of ink supplied to the dispensing outlet 11A of dispensing nozzle 11 is regulated by controlling the number of pulses in the drive signal so that irregularities in quantity of ink supplied to the dispensing nozzle are reduced, and high quality printing results can be obtained compared to the related art.
  • the quantity of ink can be regulated by controlling the amplitude of the pulses so that many print tones can be reproduced with a small number of pulses.
  • the time required to supply the ink I can therefore be reduced by a corresponding amount, and the time required to print one dot can be shortened.
  • the irregularities in the ink quantity of the drops can be decreased, and as a consequence, irregularities in the quantity of the ink diluted by the dilution fluid can be reduced.
  • the dilution fluid was supplied from the buffer tank to the pressure chamber utilizing the period that ink was supplied to the dispensing outlet of the dispensing nozzle.
  • this invention is not limited to this example, and after the dilution fluid is emitted, it may be supplied from the buffer tank to the pressure chamber, when a sufficient printing time can be maintained.
  • the emitting of ink and dilution fluid from the nozzle by driving the piezoelectric element was described.
  • this invention is not limited to this example, and a wide variety of methods such as thermal methods to locally heat this type of fluid and make air bubbles, and then emit this type of fluid by employing these air bubbles, or emitting the ink (or fluid) by various kinds of drive elements may be employed.

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  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Ink Jet (AREA)
EP00402912A 1999-10-22 2000-10-20 Imprimante et méthode de commande pour la tête d'impression Withdrawn EP1093924A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP30119299A JP2001113731A (ja) 1999-10-22 1999-10-22 プリンタ及びプリンタヘッドの制御方法
JP30119299 1999-10-22

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EP1093924A1 true EP1093924A1 (fr) 2001-04-25

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SG (1) SG93275A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1547789A1 (fr) * 2002-09-30 2005-06-29 Hamamatsu Photonics K.K. Procede de formation de gouttelettes pour liquide melange et dispositif de formation de gouttelettes, procede et dispositif d'impression a jet d'encre et buse porte-electrode d'impression a jet d'encre
US7588641B2 (en) 2001-08-30 2009-09-15 Hamamatsu Photonics K.K. Method of forming liquid-drops of mixed liquid, and device for forming liquid-drops of mixed liquid
CN115837799A (zh) * 2023-02-22 2023-03-24 季华实验室 一种喷墨头驱动信号的优化方法、装置及存储介质

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005113778A (ja) * 2003-10-07 2005-04-28 Seiko Epson Corp ポンプ

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3416449A1 (de) * 1983-08-01 1985-02-14 Veb Kombinat Robotron, Ddr 8012 Dresden Verfahren zum aufzeichnen von informationen oder bildern mittels tintenstrahlschreiber
EP0398000A1 (fr) * 1989-04-17 1990-11-22 Komori Corporation Procédé pour commander la tête dans un appareil d'enregistrement d'images
JPH0929968A (ja) * 1995-07-24 1997-02-04 Sony Corp プリンタ装置
EP0835759A1 (fr) * 1996-10-14 1998-04-15 Sony Corporation Imprimante

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08323982A (ja) * 1995-03-29 1996-12-10 Sony Corp 液体噴射記録装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3416449A1 (de) * 1983-08-01 1985-02-14 Veb Kombinat Robotron, Ddr 8012 Dresden Verfahren zum aufzeichnen von informationen oder bildern mittels tintenstrahlschreiber
EP0398000A1 (fr) * 1989-04-17 1990-11-22 Komori Corporation Procédé pour commander la tête dans un appareil d'enregistrement d'images
JPH0929968A (ja) * 1995-07-24 1997-02-04 Sony Corp プリンタ装置
EP0835759A1 (fr) * 1996-10-14 1998-04-15 Sony Corporation Imprimante

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 06 30 June 1997 (1997-06-30) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7588641B2 (en) 2001-08-30 2009-09-15 Hamamatsu Photonics K.K. Method of forming liquid-drops of mixed liquid, and device for forming liquid-drops of mixed liquid
EP1547789A1 (fr) * 2002-09-30 2005-06-29 Hamamatsu Photonics K.K. Procede de formation de gouttelettes pour liquide melange et dispositif de formation de gouttelettes, procede et dispositif d'impression a jet d'encre et buse porte-electrode d'impression a jet d'encre
EP1547789A4 (fr) * 2002-09-30 2007-11-07 Hamamatsu Photonics Kk Procede de formation de gouttelettes pour liquide melange et dispositif de formation de gouttelettes, procede et dispositif d'impression a jet d'encre et buse porte-electrode d'impression a jet d'encre
US7422307B2 (en) 2002-09-30 2008-09-09 Hamamatsu Photonics K.K. Droplet forming method for mixed liquid and droplet forming device, and ink jet printing method and device, and ink jet printing electrode-carrying nozzle
CN115837799A (zh) * 2023-02-22 2023-03-24 季华实验室 一种喷墨头驱动信号的优化方法、装置及存储介质

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SG93275A1 (en) 2002-12-17
JP2001113731A (ja) 2001-04-24

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