CN1210787A - Piezoelectric element driving circuit and ink jet recording apparatus - Google Patents
Piezoelectric element driving circuit and ink jet recording apparatus Download PDFInfo
- Publication number
- CN1210787A CN1210787A CN 97117704 CN97117704A CN1210787A CN 1210787 A CN1210787 A CN 1210787A CN 97117704 CN97117704 CN 97117704 CN 97117704 A CN97117704 A CN 97117704A CN 1210787 A CN1210787 A CN 1210787A
- Authority
- CN
- China
- Prior art keywords
- piezoelectric element
- element group
- circuit
- group
- jet recording
- 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.)
- Pending
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
- B41J2/0452—Control methods or devices therefor, e.g. driver circuits, control circuits reducing demand in current or voltage
-
- 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
- B41J2/04541—Specific driving circuit
-
- 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
Abstract
A piezoelectric element driving circuit drives a plurality of piezoelectric elements having common electrodes and independent electrodes which are driven independently. The piezoelectric element driving circuit includes a first switch circuit enabling each of a plurality of piezoelectric elements of a first piezoelectric element group (34) having the common electrodes coupled in common in response to a first enable signal, a second switch circuit (26) enabling each of a plurality of piezoelectric elements of a second piezoelectric element group (35) in response to a second enable signal, where the piezoelectric elements of the second piezoelectric element group are different from the piezoelectric elements of the first piezoelectric element group, and a driving circuit part driving in common the independent electrodes of the corresponding piezoelectric elements of the first and second piezoelectric element groups based on recording data.
Description
The present invention relates to piezoelectric element driving circuit and ink jet recording device, particularly a kind ofly be used to drive as the piezoelectric element driving circuit of the piezoelectric element of record head device for exerting and relate to a kind of ink jet recording device with such piezoelectric element driving circuit.
Ink jet recording device is broadly divided into to have with piezoelectric element and carries out first type of first record head of ink-jet as the printing ink device for exerting and have with heating element heater producing bubble and second type of second record head that carry out ink-jet in printing ink.Second record head is to the control difficulty of ink drop size.On the other hand, first record head of setting makes the mechanically deform of black chamber carry out ink-jet by piezoelectric element, therefore, is easier to by the Waveform Control ink drop size that is added in the driving signal on the piezoelectric element.
Fig. 1 is the circuit diagram of the conventional piezoelectric element driving circuit example of the expression piezoelectric element that is used to drive ink jet recording device.Because the piezoelectric element in the circuit is a capacitor, so this piezoelectric element is expressed as a capacitor among Fig. 1.
Piezoelectric element driving circuit shown in Figure 1 comprises the triode 101 and 102 that is arranged between supply voltage VCC and the ground, diode 103 and 105, and resistance 104 and 106, and with shown in piezoelectric element (capacitor) 107 link to each other.Diode 103 and resistance 104 and diode 105 and resistance 106 determine charging, the discharge time constant of piezoelectric element 107 respectively.The pulse signal that piezoelectric element 107 is applied in to triode 101 and 102 drives.
Piezoelectric element driving circuit shown in Figure 1 each piezoelectric element relatively is provided with.Therefore, the number of switch element in the piezoelectric element driving circuit (triode) increases with the piezoelectric element number, and this makes piezoelectric element driving circuit complicated and expensive.
Fig. 2 is the circuit diagram that expression is used to drive conventional another example of piezoelectric element driving circuit of ink jet recording device piezoelectric element.This piezoelectric element driving circuit can drive a plurality of piezoelectric elements.
Piezoelectric element driving circuit shown in Figure 2 comprise the triode 108 that is arranged between supply voltage VCC and the ground and 109 and with a plurality of piezoelectric elements (capacitor) 107-1 to a plurality of on-off circuit 111-1 of the corresponding setting of 107-n to 111-n.Piezoelectric element 107-1 to the common electrode of 107-n with and the node that is connected with 109 of triode 108 link to each other, piezoelectric element 107-1 to the absolute electrode warp of 107-n accordingly on-off circuit 111-1 to 111-n ground connection.Each on-off circuit 111-1 comprises triode Tr and diode D to 111-n.Each on-off circuit 111-1 is switched on ON to 111-n according to the signal that is added on the corresponding triode Tr, so that ground connection and can drive piezoelectric element 107-1 in the 107-n corresponding.
In piezoelectric element driving circuit shown in Figure 2, compare slightly according to the remarkable increase of the switch element number that requires according to the piezoelectric element number in the increase of switch element (triode) number in piezoelectric element number, the piezoelectric element driving circuit and the piezoelectric element driving circuit shown in Figure 1 and to reduce.
As the method for improving writing speed, the quantity that increases the ink jet nozzle is effective.In this case, each nozzle needs a piezoelectric element, and like this, the number of piezoelectric element increases inevitably so that carry out the high speed ink mist recording.
Yet from the aspect of electricity, piezoelectric element is a capacitor.Therefore, if piezoelectric element is connected to the matrix as the heating element heater, sub-signal voltage will be added on each piezoelectric element.Its result made originally and can not be driven by driven piezoelectric element, and made this piezoelectric element can carry out ink ejection operation.Therefore, for preventing the maloperation of piezoelectric element, piezoelectric element can not connect into matrix structure.
Therefore, as seeing from Fig. 2, conventional piezoelectric element driving circuit requires each piezoelectric element to have at least a switch element corresponding with it, and the problem of bringing is to make piezoelectric element driving circuit become complicated and expensive.Other problem is that the increase of switch element number increases the power consumption of piezoelectric element driving circuit.
Therefore, basic purpose of the present invention provides new, a piezoelectric element driving circuit and an ink jet recording device practical, that can eliminate the problems referred to above.
More particularly, an object of the present invention is to provide a piezoelectric element driving circuit and an ink jet recording device that has simple and cheap circuit structure and can drive a plurality of piezoelectric elements with low power consumption.
Another object of the present invention provides a piezoelectric element driving circuit that is used to drive a plurality of piezoelectric elements of the single electrode that has public electrode and driven separately, said piezoelectric element driving circuit comprises in a plurality of piezoelectric elements that start the first piezoelectric element group with the public electrode that connects together according to first enabling signal first on-off circuit of each, the second switch circuit of each in a plurality of piezoelectric element that start the second piezoelectric element group according to second enabling signal, the piezoelectric element of the said second piezoelectric element group different drive circuit parts according to the absolute electrode of the corresponding piezoelectric element of record data common driving first and second piezoelectric element groups from the piezoelectric element of the first piezoelectric element group.According to piezoelectric element driving circuit of the present invention, available simple and cheap circuit structure drives a plurality of piezoelectric elements with low power consumption.
Another purpose of the present invention provide one by with have public electrode and the piezoelectric element of the single electrode that driven separately to the ink jet recording device of printing ink pressurization carrying out ink mist recording, said ink jet recording device comprises that one contains and possesses the public electrode that is connected in together, and the first piezoelectric element group of a plurality of piezoelectric elements that are activated according to first enabling signal, a second piezoelectric element group that contains a plurality of piezoelectric elements that possess the public electrode that is connected in together and be activated according to second enabling signal, the piezoelectric element of the said second piezoelectric element group different drive unit according to the absolute electrode of the corresponding piezoelectric element of record data common driving first and second piezoelectric element groups from the piezoelectric element of the said first piezoelectric element group.According to ink jet recording device of the present invention, available simple and cheap circuit structure drives a plurality of piezoelectric elements of ink jet recording device with low power consumption.
Other purpose of the present invention and further feature will come into plain view after reading following detailed description in conjunction with the accompanying drawings.
Description of drawings.
Fig. 1 is the circuit diagram of the conventional piezoelectric element driving circuit example of the expression piezoelectric element that drives ink jet recording device;
Fig. 2 is the circuit diagram of conventional another example of piezoelectric element driving circuit of the expression piezoelectric element that drives ink jet recording device;
Fig. 3 is the system block diagram of parts of first embodiment of expression ink jet recording device of the present invention;
Fig. 4 is the circuit diagram of head driver and recording head section structure embodiment among first embodiment of this ink jet recording device of expression;
Fig. 5 is the figure of an expression driving voltage waveform;
Fig. 6 is the circuit diagram of head driver and recording head section structure embodiment among second embodiment of this ink jet recording device of expression.
A piezoelectric element driving circuit of the present invention is provided with one according to first enabling signal startup tool Have the public electrode that connects together the first piezoelectric element group a plurality of piezoelectric elements each One on-off circuit, an a plurality of piezoelectricity unit that starts the second piezoelectric element group according to second enabling signal The second switch circuit of each of part, wherein the piezoelectric element and first of the second piezoelectric element group is pressed The piezoelectric element difference of electric device group and one drive first and second and press according to record data are common The drive circuit parts of the absolute electrode of the corresponding piezoelectric element of electric device group.
According to piezoelectric element driving circuit of the present invention, only have first and second piezoelectric element groups Corresponding piezoelectric element in time driven at every bit. Like this, can greatly reduce certain driving quilt Select the desired switch element number of unique piezoelectric element, thereby reduced power consumption.
Ink jet recording device according to the present invention is by with having public electrode and being driven separately The piezoelectric element of absolute electrode to printing ink pressurization and carry out ink mist recording. This ink jet recording device is established Have one contain possess the public electrode that connects together and according to first enabling signal be activated a plurality of The first piezoelectric element group of piezoelectric element, one contain possess the public electrode that connects together and according to The second piezoelectric element group of a plurality of piezoelectric elements that second enabling signal is activated, its second piezoelectricity unit The piezoelectric element of part group different from the piezoelectric element of the first piezoelectric element group and one according to the record number Driving dress according to the absolute electrode of the common corresponding piezoelectric element that drives the first and second piezoelectric element groups Put.
According to ink jet recording device of the present invention, only has the phase of first and second piezoelectric element groups Answer piezoelectric element in time to be started at every bit. Therefore it is selected unique greatly to reduce certain driving The desired switch element number of piezoelectric element, thus power consumption reduced. In addition, because a large amount of pressures Electric device can be selected driving by this way, therefore can realize the high speed ink mist recording.
The implementation column of piezoelectric element driving circuit of the present invention and ink-jet apparatus is described below in conjunction with Fig. 3 to Fig. 6.
Fig. 3 is the system block diagram of the expression ink jet recording device first embodiment parts of the present invention.First embodiment of this ink jet recording device adopts first embodiment of piezoelectric element driving circuit of the present invention.The present invention is applied to color inkjet printer in this first embodiment of this ink jet recording device in addition.
Color inkjet printer generally comprises a CPU (CPU) 1, a RAM2, a ROM3, a HPI 4, a mechanical interface 5,7, one sensor groups 11 of 6, one buses of one stature interface, a thermo-mechanical drive 12,13, one head drivers 14 of a group of motors and one are as connected record head 15 among Fig. 3.
CPU1 controls the operation of whole color inkjet printer.ROM3 storage data and the program of carrying out by CPU1.RAM2 stores by the intermediate data of computings such as CPU1.CPU1 is connected to the host apparatus (not shown) through bus 7 and HPI 4.HPI 4 provides order, record data etc. from host apparatus to CPU1, also provides the information relevant with operator scheme from CPU1 to host apparatus.
Interface 6 is according to the instruction control head driver from CPU1, the nozzle that control is outer with the nozzle of printing ink discharge recording head 15, and control the amount that each nozzle is discharged printing ink.Record head 15 has the known structure that comprises a plurality of nozzles, when carrying out the monochrome record, use the nozzle of discharging black ink, when carrying out the polychrome record, use the nozzle of discharging Yellow ink, magenta ink, cyan ink and black ink, piezoelectric element each nozzle relatively is provided with.When carrying out the monochrome record, CPU1 provides one to make a plurality of nozzles when the discharge black ink that carries out being used when monochrome writes down be in first enabling signal of starting state for head driver 14 through an interface 6.On the other hand, when carrying out the polychrome record, CPU1 provides one to make a plurality of nozzles when the discharge Yellow ink, magenta ink, cyan ink and the black ink that carry out being used when polychrome writes down be in second enabling signal of starting state for head driver 14 through an interface 6.The nozzle number of using when in this embodiment, carrying out monochromatic the record is greater than the nozzle number of carrying out using when polychrome writes down.
The following describes the general operation of ink-jet printer.At first, CPU1 informs that through HPI 4 the host apparatus ink-jet printer is in the state that can write down operation.When host apparatus receives recording instruction from application program, host apparatus sends order relevant with log resolution, image processing etc., that be correlated with CPU1 after the affirmation ink-jet printer is in ready state, and record data are transferred to CPU1 through HPI 4.
In this ink-jet printer, CPU1 is provided with multiple parameter according to the command instruction from host apparatus at a mechanical interface 5 and an interface 6.In this state, CPU1 also is provided with a mark that indicates whether that the record data basis is write down by monochrome from the order of host apparatus or the polychrome logging program writes down in an interface 6.Interface 6 provides first enabling signal for head driver 14 according to this mark when carrying out the monochrome record, second enabling signal is provided for head driver 14 according to this mark when carrying out the polychrome record.Under the control of CPU1, record data are provided for head driver 14 through an interface 6.Based on these record data and first or second enabling signal, head driver 14 provides a driving voltage that is used to drive and discharge corresponding each piezoelectric element of nozzle of printing ink for record head 15.
The specific characteristic of present embodiment is the structure of head driver 14 and record head 15, and present embodiment can use the parts with the corresponding known structure of other parts of ink-jet printer shown in Figure 3.For this reason, hereinafter only the structure and the operation of head driver 14 and record head 15 described.
Fig. 4 is the circuit diagram of expression head driver 14 and record head 15 structure examples.In Fig. 4, head driver 14 comprises waveform generator 21 to 23, the first on-off circuits 25 and second switch circuit 26.First on-off circuit 25 is by a triode T
R1Constitute with a diode D1, the second switch circuit is by a triode T
R2Constitute with a diode D2.Enabling signal EN1 from CPU1 offers first on-off circuit 25, offers second switch circuit 26 from the enabling signal EN2 of CPU1.
On the other hand, record head 15 comprises 31, one latch cicuits 32 of a shift register, and switch 33-1 to 33-n constitutes a plurality of piezoelectric element 34-1 to 34-n of the first piezoelectric element group 34 and constitutes a plurality of piezoelectric element 35-135-n of the second piezoelectric element group 35.Use the piezoelectric element 34-1 to 34-n of the first piezoelectric element group 34 when in this embodiment, carrying out monochromatic the record.In fact, if supposition m＞n, then other piezoelectric element 34-n+1 of abridged also can carry out monochrome use when writing down to 34-m among Fig. 4.When carrying out the polychrome record, use the piezoelectric element 35-1 to 35-n of the second piezoelectric element group 35.
The absolute electrode of the piezoelectric element 34-1 to 34-n of the first piezoelectric element group 34 is connected to the output of respective switch 33-1 to 33-n.Similarly, the absolute electrode of the piezoelectric element 35-1 to 35-n of the second piezoelectric element group 35 is connected to the output of respective switch 33-1 to 33-n.On the other hand, the public electrode of the piezoelectric element 34-1 to 34-n of the first piezoelectric element group 34 is connected to on-off circuit 35 together.Similarly, the public electrode of the piezoelectric element 35-1 to 35-n of the second piezoelectric element group 35 is connected to second switch circuit 26 together.Therefore, (have high level) when enabling signal EN1 sends, the public electrode of the piezoelectric element 34-1 to 34-n of the first piezoelectric element group 34 is together through first on-off circuit, 25 ground connection.In addition, (have high level) when enabling signal EN2 sends, the public electrode of the piezoelectric element 35-1 to 35-n of the second piezoelectric element group 35 is together through second switch circuit 26 ground connection.
The record data response that obtains through HPI 4 and CPU1 from host apparatus is imported into shift register 31 from the clock of CPU1.These record data of input shift register 31 are latched circuit 32 according to the latch signal from CPU1 and latch.The output signal of a latch cicuit 32 is added to each switch 33-n to 33-n as control signal.In each switch 33-1 to 33-n, according to the foundation of record data from the driving voltage waveform W1 to W3 that waveform generator 21 to 23 receives from the selected output of the control signal of latch cicuit 32.
For example, when piezoelectric element 34-2 that drives the first piezoelectric element group 34 and 34-n, enabling signal EN1 sends, and the public electrode of each piezoelectric element 34-1 to 34-n of the first piezoelectric element group 34 is through first on-off circuit 25 ground connection together.On the other hand, enabling signal EN2 does not send, and the public electrode of each piezoelectric element 35-1 to 35-n of the second piezoelectric element group 35 presents floating state together.At this moment, if two ink ejection amounts are different mutually, then the current potential on the absolute electrode of piezoelectric element 34-2 and 34-n is different, and has a voltage and be applied to the piezoelectric element 35-2 that is connected with the absolute electrode of piezoelectric element 34-2 and 34-n and the absolute electrode of 35-n.
But when blotting, a driving voltage that is applied to the absolute electrode of piezoelectric element 34-2 and 34-n has identical rising waveform, so there is not voltage to be applied to the absolute electrode of piezoelectric element 35-2 and 35-n.In addition, when ink-jet, though have small potential difference between a driving voltage of the absolute electrode that puts on piezoelectric element 34-2 and 34-n, this small potential difference is divided into 1/2 voltage of the maximum of this small electric potential difference or smaller value.Therefore, as piezoelectric element 34-2 with 34-n is driven and during from the respective nozzle ink-jet, can prevent effectively that piezoelectric element 35-2 and 35-n are driven, and and then prevent from the respective nozzles ink-jet.
Therefore, according to present embodiment, can use simple, cheap circuit structure, drive a plurality of piezoelectric elements with low power consumption.
Introduce second embodiment of ink jet recording device of the present invention below.The system block diagram that second of this ink jet recording device is implemented parts is identical with block diagram shown in Figure 3, and its explanation block diagram is omitted.Second embodiment of this ink jet recording device adopts second embodiment of piezoelectric element driving circuit of the present invention.In second embodiment of this ink jet recording device, the present invention is used for color inkjet printer.
Fig. 6 is the circuit diagram of head driver 14 and record head 15 modular construction examples among expression this ink jet recording device second embodiment.In Fig. 6, those parts identical with corresponding component among Fig. 4 use same label, and omit the explanation to them.
In Fig. 6, the first piezoelectric element group 34 comprise by piezoelectric element 34-11 to 34-1p form first the grouping, by piezoelectric element 34-21 to 34-2p constitute second the grouping ... and the n that constitutes by piezoelectric element 34-n1 to 34-np grouping.The absolute electrode of P piezoelectric element is connected to the output of a respective switch among the switch 33-1 to 33-n in each grouping.For example, in first grouping that is made of piezoelectric element 34-11 to 34-1p, each piezoelectric element 34-11 to 34-1p is connected to the output of respective switch 33-1.
The public electrode of the piezoelectric element 34-11 to 34-1p of first grouping is connected to the first on-off circuit 25-1 of reception from the enabling signal EN11 of CPU1 together.The public electrode of the piezoelectric element 34-21 to 34-2p of second grouping is connected to the first on-off circuit 25-2 of reception from the enabling signal of CPU1 together.The public electrode of the piezoelectric element 34-n1 to 34-np of n grouping is connected to the first on-off circuit 25-n of reception from the CPU1 enabling signal together.If suppose i=1 for the purpose of convenient ..., n, then the first on-off circuit 25-i comprises triode Trli and diode Dli.
In the present embodiment, the enabling signal EN11 to EN1n that is added in the first on-off circuit 25-1 to 25-n will be cut apart for effective time.
According to present embodiment,, therefore, can realize the matrix driving of piezoelectric element because the piezoelectric element of the first piezoelectric element group 34 is started by timesharing each grouping.In addition, can reduce required instantaneous power consumption.
In the various embodiments described above, the first piezoelectric element group 34 is used for monochromatic record, and the second piezoelectric element group 35 is used for the polychrome record.But the second piezoelectric element group 35 is not to be used for the polychrome record, and it also can be used for monochromatic record as the first piezoelectric element group 34.
At home and abroad, when from the corresponding nozzle ejection printing ink of the piezoelectric element that is out of shape with being driven, the deformation direction of adopted piezoelectric element can be identical with direction of an electric field or vertical with direction of an electric field, and applicable to two kinds of situations that adopt analogous circuit.
Have, the present invention is not limited to the above embodiments again, and it is fully possible making various improvement without departing from the scope of the invention.
Claims (9)
1. piezoelectric element driving circuit that is used to drive a plurality of piezoelectric elements of the absolute electrode that has public electrode and driven separately, described piezoelectric element driving circuit comprises:
One first on-off circuit (25; 25-1 to 25-n), be used for starting each piezoelectric element of a plurality of piezoelectric elements of the first piezoelectric element group (34) with the public electrode that links together according to first enabling signal;
A second switch circuit (26) is used for starting according to second enabling signal each piezoelectric element of a plurality of piezoelectric elements of the second piezoelectric element group (35), and the piezoelectric element of the described second piezoelectric element group is different with the piezoelectric element of the described first piezoelectric element group;
Drive circuit parts (31,32,33-1 to 33-n) are used for according to the common absolute electrode that drives the corresponding piezoelectric element of the first and second piezoelectric element groups of record data.
2. piezoelectric element driving circuit as claimed in claim 1, the wherein said first and second piezoelectric element groups (34,35) has the piezoelectric element of similar number, and described drive circuit parts (31,32,33-1 to 33-n) according to the common every pair of corresponding absolute electrode that drives in the first and second piezoelectric element groups of record data.
3. piezoelectric element driving circuit as claimed in claim 1, the wherein said first piezoelectric element group (34) comprises a plurality of groupings, the public electrode of each piezoelectric element of the second piezoelectric element group (35) is connected to a public electrode of the corresponding piezoelectric element of each grouping, and said first on-off circuit (25-1 to the 25-n) timesharing starts the piezoelectric element of each grouping of the first piezoelectric element group.
4. one kind by with having public electrode and the piezoelectric element of the absolute electrode that driven is separately exerted pressure to printing ink and carried out the ink jet recording device of ink mist recording, and described ink jet recording device comprises:
One first piezoelectric element group (34), this first piezoelectric element group (34) comprise a plurality of have public electrode that links together and the piezoelectric element that is activated according to first enabling signal;
One second piezoelectric element group (35), this second piezoelectric element group (35) comprises a plurality of have public electrode that links together and the piezoelectric element that is activated according to second enabling signal, and the piezoelectric element of the described second piezoelectric element group is different with the piezoelectric element of the described first piezoelectric element group; With
Drive unit (31,32,33-1 to 33-n) is used for according to the common absolute electrode that drives the corresponding piezoelectric element of the first and second piezoelectric element groups of record data.
5. ink jet recording device as claimed in claim 4, the wherein said first and second piezoelectric element groups (34,35) has the piezoelectric element of similar number, and described drive unit (31,32,33-1 to 33-n) according to common each that drives the first and second piezoelectric element groups of record data to corresponding absolute electrode.
6. as claim 4 or 5 described ink jet recording devices, also comprise:
One first on-off circuit (25; 25-1 to 25-n), be used for starting each piezoelectric element of the described first piezoelectric element group (34) according to first enabling signal; With
A second switch circuit (26) is used for starting according to second enabling signal each piezoelectric element of the described second piezoelectric element group (34).
7. ink jet recording device as claimed in claim 6, the wherein said first piezoelectric element group (34) comprises a plurality of groupings, the public electrode of each piezoelectric element of the second piezoelectric element group (35) is connected with the public electrode that this respectively divides into groups corresponding piezoelectric element, and described first on-off circuit (25-1 to the 25-n) timesharing starts the piezoelectric element of each grouping of the first piezoelectric element group.
8. as the described ink jet recording device of claim 4 to 7, the wherein said first piezoelectric element group (34) constitutes the record head in the monochromatic record, and the described second piezoelectric element group (35) constitutes the record head in the polychrome record.
9. as the described ink jet recording device of claim 4 to 8, wherein said drive unit (31,32,33-1 to 33-n) utilizes the slope control ink ejection amount of each drive signal waveform on the absolute electrode of the piezoelectric element that is applied to the described first and second piezoelectric element groups (34,35).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9065116A JPH10250074A (en) | 1997-03-18 | 1997-03-18 | Piezoelectric element drive circuit and ink jet recorder |
| JP065116/97 | 1997-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1210787A true CN1210787A (en) | 1999-03-17 |
Family
ID=13277605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97117704 Pending CN1210787A (en) | 1997-03-18 | 1997-08-21 | Piezoelectric element driving circuit and ink jet recording apparatus |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0865921A3 (en) |
| JP (1) | JPH10250074A (en) |
| CN (1) | CN1210787A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19927087A1 (en) * | 1999-06-15 | 2000-12-21 | Bosch Gmbh Robert | Arrangement for charging and discharging several piezoelectric elements e.g. for fuel injectors in IC engine, has piezoelectric elements divided into groups, each able to be mutually independently charged or discharged |
| CN100408339C (en) * | 2004-09-02 | 2008-08-06 | 财团法人工业技术研究院 | Inkjet head structure and its preparing method |
| JP4797550B2 (en) * | 2005-10-05 | 2011-10-19 | 富士ゼロックス株式会社 | Droplet discharge device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4463359A (en) * | 1979-04-02 | 1984-07-31 | Canon Kabushiki Kaisha | Droplet generating method and apparatus thereof |
| JPS58212958A (en) * | 1982-06-07 | 1983-12-10 | Fujitsu Ltd | Drive circuit of print head for ink jet |
| JPH0477260A (en) * | 1990-07-18 | 1992-03-11 | Seiko Epson Corp | Drive circuit of ink jet printer |
| JPH05116283A (en) * | 1991-10-25 | 1993-05-14 | Fuji Electric Co Ltd | Ink jet recording head |
| JPH06286130A (en) * | 1993-03-31 | 1994-10-11 | Seikosha Co Ltd | Ink jet printer |
| US5781203A (en) * | 1995-01-13 | 1998-07-14 | Mita Industrial Co., Ltd. | Ink ejecting device for use in an ink jet printing apparatus |
| JPH08300652A (en) * | 1995-01-13 | 1996-11-19 | Mita Ind Co Ltd | Ink jet head driving apparatus |
| JPH08336970A (en) * | 1995-04-14 | 1996-12-24 | Seiko Epson Corp | Ink-jet type recording device |
-
1997
- 1997-03-18 JP JP9065116A patent/JPH10250074A/en not_active Withdrawn
- 1997-07-31 EP EP97305778A patent/EP0865921A3/en not_active Withdrawn
- 1997-08-21 CN CN 97117704 patent/CN1210787A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0865921A2 (en) | 1998-09-23 |
| JPH10250074A (en) | 1998-09-22 |
| EP0865921A3 (en) | 1999-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8177333B2 (en) | Element board for printhead, and printhead having the same | |
| CN100553977C (en) | Serial data transfer method, electronic equipment and tape deck | |
| US6352327B1 (en) | Printing apparatus and print control method | |
| EP0208322B1 (en) | Ink jet printing device | |
| US20140015888A1 (en) | Printing apparatus and printing method | |
| US6270179B1 (en) | Inkjet printing device and method | |
| US7084996B2 (en) | Recording device | |
| CN100509593C (en) | Sheet conveyance apparatus, method and image forming apparatus | |
| EP0692769B1 (en) | Printing apparatus and method | |
| CN1104333C (en) | Print-head drive circuit and ink-jet printer with said print head | |
| JP2002225246A (en) | Drive control device and method for printing device and printing head, and temperature detection device | |
| EP0211269B1 (en) | Dot printing apparatus and method | |
| CN1165088A (en) | Ink jet printer and drive method thereof | |
| CN1796126A (en) | Ink jet recording head, substrate for ink jet recording head, driving control method, and ink jet recording apparatus | |
| JP3757806B2 (en) | Ink jet printer head drive apparatus and drive method | |
| JP3797161B2 (en) | Ink jet printer head drive apparatus and drive method | |
| CN1210787A (en) | Piezoelectric element driving circuit and ink jet recording apparatus | |
| EP0950945B1 (en) | Image forming apparatus and system, information processing apparatus, and their control method | |
| CN1094834C (en) | Printer apparatus and printer head | |
| EP2327549A1 (en) | Printhead substrate, printhead and printing apparatus | |
| US7766439B2 (en) | Recording apparatus | |
| US7126715B2 (en) | Ink jet recording apparatus and control method therefor | |
| US7575291B2 (en) | Recording apparatus | |
| CN1894104A (en) | Composite printhead fire signals | |
| US6226100B1 (en) | Printing apparatus and printing control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |