CN1357456A - Control circuit for driving ink nozzle of printer - Google Patents
Control circuit for driving ink nozzle of printer Download PDFInfo
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- CN1357456A CN1357456A CN 00134845 CN00134845A CN1357456A CN 1357456 A CN1357456 A CN 1357456A CN 00134845 CN00134845 CN 00134845 CN 00134845 A CN00134845 A CN 00134845A CN 1357456 A CN1357456 A CN 1357456A
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Abstract
The ink nozzle in printer controlling circuit can produce a heating signal according to received the signals to drive several heating elements to heat corresponding ink jetting chambers, so that ink is jetted to form corresponding printing ink spots. It has a temperature measurer to measure the temperature of the ink nozzle and ink jetting chambers; a heat weight value table; a calculating module; and a processor. When the processor produces a preheating signal, the circuit provides preheating and the heating signal to required heating elements for preset ink nozzles, so that ink is jetted out from the ink nozzles.
Description
The present invention relates to the control circuit of ink gun in a kind of printing equipment, particularly a kind of printing equipment ink-jet head driving circuit that is used for.
With reference to Fig. 1, Fig. 1 is the synoptic diagram of known ink gun 70.Ink gun 70 includes an ink container 72, a plurality of black road 74 and a plurality of inkjet ink chamber 76, ink container 72 is connected with a plurality of inkjet ink chamber 76 via a plurality of black roads 74, ink in the ink container 72 can be flow in the inkjet ink chamber 76 via black road 74 to be deposited, each inkjet ink chamber 76 inside is provided with a heating resistor 78, be used for its heat energy being improved to the ink in the inkjet ink chamber 76 heating, when the heat energy of inkjet ink chamber 76 ink inside during, then can make ink produce bubble 80 and make jet orifice 82 ejection ink dots to print greater than a predetermined energy threshold.When jet orifice 82 receives the indication of ejection ink dot continuously, the heating resistors 78 under this jet orifice 82 will heat continuously with the ejection ink dot and print, so the ink temperature of the inkjet ink chamber 76 under this jet orifice 82 is higher, the ink viscosity is lower; Relative, if another jet orifice 82 less indications that receive the ejection ink dot, then the ink temperature of the inkjet ink chamber 76 under this jet orifice 82 is lower, the ink viscosity is higher.If it is use identical energy to drive heating resistor 78 under these two jet orifice 82, that the sizes of ink dots that this two jet orifice 82 are sprayed is inconsistent and influence print quality.So, the energy that heating resistor 78 is provided in the ink gun 70 except the heat energy that will make inkjet ink chamber 76 ink inside greater than this energy threshold, the best size of energy that adjustment provides that also can be suitable, so that the sizes of ink dots that different jet orifice sprayed can be consistent, to keep best print quality.
With reference to Fig. 2, Fig. 2 is the synoptic diagram of known driver of ink-jet head.For example, driving circuit 10 can receive 30 inputs of eight print datas, produces eight control signals (D1, D2, D3, D4, D5, D6, D7, D8) and exports ink gun 40 to.Ink gun 40 includes a heater circuit 42 and eight inkjet ink chamber (R1, R2, R3, R4, R5, R6, R7, R8), and driving circuit 10 includes a shift register 22, a lock-in circuit 24 and a driver module 26.Shift register 22 is the control according to a clock signal 32,0 and 1 print data 30 that is used for receiving printing equipment in proper order and is sent, and lock-in circuit 24 then locks print data 30 and be stored in the lock-in circuit 24 according to a locking signal 34.Driver module 26 mainly is made up of a plurality of AND gate 28, and according to a drive signal 36 heater circuit 42 in the ink gun 40 is begun 78 heating of the heating resistor in each inkjet ink chamber of predetermined heat.Heater circuit 42 includes a plurality of heating resistors 78 and transistor switch 44, each transistor switch 44 is connected to its grid by separately control signal (D1, D2, D3, D4, D5, D6, D7, D8) and is controlled, wherein when a certain specific control signal is activated, can make relative transistor switch 44 be switched on, make the electric current corresponding heating resistor 78 of flowing through, so corresponding inkjet ink chamber is heated, make the ejection of being heated of its ink inside form ink dot and print.
With reference to Fig. 3, Fig. 3 is the sequential chart of first kind of situation of known ink gun drive signal.The heat energy of inkjet ink chamber 76 ink inside is provided by heating resistor 78 except meeting energy influences, also can be subjected to other factors and change, for example; Once print want to drive the number number of the inkjet ink chamber of ink-jet simultaneously.When the inkjet ink chamber number of once printing institute's driving simultaneously more, the amplitude that then can rationally know these inkjet ink chamber temperature risings by inference can be bigger, therefore the energy of heating resistor 78 these inkjet ink chamber that offer then can be less, below is the type of drive that example is illustrated known ink gun 40 with Fig. 3.Between time T 0 to T1, eight printed information 30 can be imported in the shift register 22 in proper order via the control of clock signal 32, and when the pulse of locking signal 34 produced, 0 and 1 position of eight print datas 30 just locked respectively and is stored in the lock-in circuit 24.When the pulse of time T 1 drive signal 36 between T2 produced, the AND gate 28 of driver module 26 can be 0 and 1 according to print data 30 its positions that locked in the lock-in circuit 24, determines whether exporting the pulse of corresponding drive signal 36.For example, between time T 0 to T1, print data 30 is (1,1,1,1,0,0,0,0), therefore when the pulse 37 of time T 1 drive signal 36 between T2 produces, corresponding transistor switch conducting, cause corresponding heating resistor to have electric current to flow through, and make corresponding inkjet ink chamber (R1, R2, R3, R4) be heated and spray ink dot, and the transistor that other are not activated is not owing to be switched on, its corresponding heating resistor does not have electric current to flow through, so its corresponding inkjet ink chamber (R5, R6, R7, R8) can not be heated, thereby not have ink dot to produce.
At this moment, between time T 1 to T2, print data 30 is updated to (1,1,1,1,1,0,0,0), therefore when the pulse 38 of time T 2 drive signal 36 between T3 produces, corresponding inkjet ink chamber (R1, R2, R3, R4, R5) is heated and sprays ink dot, and other inkjet ink chamber (R6, R7, R8) can not be heated, thereby do not have ink dot to produce.Identical in this pulse width (Duration) that can notice pulse 37,38,39, but the size of magnitude of voltage is inequality.The magnitude of voltage of pulse 38 is low than the magnitude of voltage of pulse 37, this is because the number of the inkjet ink chamber of the ink-jet that drives is four when printing for the first time, and the number of the inkjet ink chamber of the ink-jet that drives is five when printing for the second time, because the inkjet ink chamber number that institute drives simultaneously when printing for the second time is many when print the first time, so the energy of heating resistor 78 these inkjet ink chamber that offer then can be less.In like manner, the number of the inkjet ink chamber of the ink-jet that drives is six when printing for the third time, because it is more when print the second time to print the inkjet ink chamber number that time institute drives simultaneously for the third time, therefore the energy of heating resistor 78 these inkjet ink chamber that offer then can be littler, so the magnitude of voltage of pulse 39 is lower than the magnitude of voltage of pulse 37, pulse 38.
With reference to Fig. 4, Fig. 4 is the sequential chart of second kind of situation of known ink gun drive signal.Fig. 4 and Fig. 3 difference, be Fig. 4 print each time want to drive the inkjet ink chamber of ink-jet simultaneously number all be all four, difference only is that its distribution of inkjet ink chamber of four predetermined ejection ink dots is different, as: print data 30 is that (1,1,1,1,0,0,0,0) is comparatively concentrated for the first time, print data 30 is that (0,1,1,0,0,1,1,0) comparatively disperses for the second time, and print data 30 is that (1,0,0,1,0,1,0,1) more disperses for the third time.Yet, because known technology only considers to want the number of the inkjet ink chamber that drives, in case therefore these three kinds of situation numbers are all identical, the pulse width (Duration) and the magnitude of voltage of the pulse 47,48,49 of its drive signal that applies are also all identical, and that it offers corresponding heating resistor 78 energy is also all identical naturally.Yet, in fact the heat energy of inkjet ink chamber 76 ink inside also can be subjected to other factors and change, for example: whether also have other inkjet ink chamber also to be scheduled to spray ink around the inkjet ink chamber of predetermined ejection ink? as shown in Figure 4, the inkjet ink chamber of predetermined ejection ink distributes comparatively concentrated when printing for the first time, therefore the heat energy of these inkjet ink chamber ink inside in fact can be higher, comparatively speaking, the inkjet ink chamber of predetermined ejection ink distributes and disperses most when printing for the third time, and the heat energy of these inkjet ink chamber ink inside in fact can be lower, but, therefore the practice as Fig. 4 known technology is not considered this factor fully, still can cause the sizes of ink dots that sprays in the ink gun inconsistent and influence print quality.
Because the problems referred to above, fundamental purpose of the present invention is to provide the control circuit of ink gun in a kind of printing equipment, can be according to the temperature of ink gun and the printing situation of different hot intensities wherein, carry out temperature compensation with the drive signal that different-energy is provided, therefore but make in the print procedure in the ink gun thermal effect equiblibrium mass distribution between each inkjet ink chamber, and then can make the sizes of ink dots unanimity of ejection, to address the above problem.
For achieving the above object, the invention provides a kind of control circuit that is used for driving ink gun in the printing equipment, this ink gun includes a plurality of inkjet ink chamber and corresponding a plurality of heating element, each inkjet ink chamber can ccontaining ink in wherein and have a jet orifice, a plurality of print datas that this control circuit is sent in the time of can desiring to print according to this printing equipment at every turn are to produce a heating signal, and drive this a plurality of heating elements according to this heating signal and provide energy to heat corresponding inkjet ink chamber, and make ink form corresponding ink dot and print from the ejection of this jet orifice, this control circuit includes: a measuring temp device is used for measuring the temperature of this ink gun and these a plurality of inkjet ink chamber; One heat is concentrated weight table; Be used for distribution scenario according to position between the jet orifice of the jet orifice of predetermined ejection ink dot and adjacent predetermined ejection ink dot, define the concentrated weights of heat of the jet orifice of this predetermined ejection ink dot; One computing module; Be used for concentrating weights to calculate, and draw a total weight value result of calculation according to heat of total weight value account form jet orifice of all predetermined ejection ink dots will print the time at every turn; And a processor, be used for the temperature and this total weight value result of calculation that are measured according to this measuring temp device, whether produce a pre-thermal signal with decision; Wherein when this processor produces this pre-thermal signal, this control circuit can provide this pre-thermal signal and this heating signal to all predetermined corresponding heating elements that sprays the jet orifice of ink dots, so that this heating element can be to the heating of this inkjet ink chamber, and make ink from this jet orifice ejection and print.
Fig. 1 is the synoptic diagram of known ink gun.
Fig. 2 is the synoptic diagram of known driver of ink-jet head.
Fig. 3 is the sequential chart of first kind of situation of known ink gun drive signal.
Fig. 4 is the sequential chart of second kind of situation of known ink gun drive signal.
Fig. 5 is the synoptic diagram of control circuit of ink-ejecting head of the present invention.
Fig. 6 concentrates the synoptic diagram of weight table and heat leakage weight table for the present invention's heat.
Fig. 7 is the process flow diagram of a kind of embodiment of total weight value account form of the present invention.
Fig. 8 is the sequential chart of a kind of embodiment of total weight value account form of the present invention.
Fig. 9 (a)-(f) is different inkjet ink chamber temperature during for different total weight value, the synoptic diagram of drive signal.
Figure 10 is first kind the control flow chart that total weight value account form be embodiment of the present invention with Fig. 7.
Figure 11 is used for the synoptic diagram of a kind of embodiment of matrix form ink gun for total weight value account form of the present invention.
Figure 12 is used for the synoptic diagram of the another kind of embodiment of matrix form ink gun for total weight value account form of the present invention.
Figure 13 is used in the process flow diagram of matrix form ink gun for total weight value account form of the present invention.
Figure 14 is the process flow diagram of the another kind of embodiment of total weight value account form of the present invention.
Figure 15 is the sequential chart of a kind of embodiment of total weight value account form of the present invention.
Figure 16 is used for the synoptic diagram of a kind of embodiment of matrix form ink gun for total weight value account form of the present invention.
Figure 17 is second kind of control flow chart of the present invention.
Figure 18 is the third control flow chart of the present invention.
Figure 19 (a)-(b) is when utilizing the third control flow, and jet orifice is under different inkjet ink chamber temperature and during different adjacent ink-jet hole count, the synoptic diagram of its drive signal.
Figure 20 (a)-(b) is when utilizing the third control flow, and the jet orifice of matrix form ink gun is under different inkjet ink chamber temperature and during different adjacent ink-jet hole count, the synoptic diagram of its drive signal.
Figure 21 is the 4th kind of control flow chart of the present invention.
Figure 22 (a)-(b) is when utilizing the 4th kind of control flow, and the jet orifice of matrix form ink gun is under different inkjet ink chamber temperature and during different adjacent ink-jet hole count, the synoptic diagram of its drive signal.
Because The present invention be directed to the control circuit and the driving method thereof that drive ink gun in the printing equipment is improved, part as for ink gun is then similar with the known ink gun of Fig. 1, therefore the structure in the ink gun is not described in detail once more with next, and the introduction that emphasis is placed different embodiment control circuits and driving method thereof, if needed can be with reference to the synoptic diagram of Fig. 1 ink gun.
With reference to Fig. 5, Fig. 5 is the synoptic diagram of control circuit of ink-ejecting head 100 of the present invention.Control circuit 100 includes a shift register 122, one lock-in circuits 124, one processors 140, one storeies 150, one driver modules 126, and a measuring temp device 190.Shift register 122 is the control according to a clock signal 132, and the print data 130 that is used for receiving printing equipment in proper order and is sent is that form with the position is sent to shift register 122 in this print data 130, therefore 0 and 1 numerical data just.Lock-in circuit 124 then locks 0 and 1 print data 130 and be stored in the lock-in circuit 124 according to a locking signal 134.Processor 140 is to be used for deal with data or executive routine, stores a heat in the storer 150 and concentrates weight table 170, a heat leakage weight table 180 and a weights computing module 160.It is to be used for distribution scenario according to position between the jet orifice of the jet orifice of predetermined ejection ink dot and adjacent predetermined ejection ink dot that heat is concentrated weight table 170, defines the concentrated weights of heat of the jet orifice of this predetermined ejection ink dot.Heat leakage weight table 180 is to be used for distribution scenario according to position between the jet orifice of the jet orifice of non-predetermined ejection ink dot and adjacent non-predetermined ejection ink dot, defines the heat leakage weights of the jet orifice of this non-predetermined ejection ink dot.And weights computing module 160 is to be used for concentrating the heat leakage weights of the jet orifice of weights or non-predetermined ejection ink dot to calculate according to heat of total weight value account form jet orifice of all predetermined ejection ink dots will print the time at every turn, and draw a total weight value result of calculation, and processor 140 and the temperature and the total weight value result of calculation that can be measured according to measuring temp device 190, decide except heating signal, whether to comprise a pre-thermal signal in the drive signal in addition, then and with this drive signal export driver module 126 to.Pre-thermal signal only is used for heating ink to improve the temperature of ink, and heating signal then is to be used for producing bubble so that the ink ejection.Driver module 126 includes a plurality of AND gates 128, can provide drive signal to the corresponding heating element of the jet orifice of predetermined ejection ink dot, so that the heating element in the ink gun can heat inkjet ink chamber, and makes ink from the jet orifice ejection and print.
With reference to Fig. 6, Fig. 6 concentrates the synoptic diagram of weight table 170 and heat leakage weight table 180 for the present invention's heat.Heat is concentrated and included three fields in the weight table 170: heat is concentrated counting index (heat-accumulationindex, m) 172, heat concentrates weights (heat-accumulation weight, W (m)) 174 and heat to concentrate weight setting value (heat-accumulation weight value) 176.Because weights computing module 160 is with a predetermined total weight value account form in the control circuit 100 of the present invention, heat of the jet orifice of all predetermined ejection ink dots concentrate weights calculate when printing at every turn, and cooperate the measuring temp device to ink gun and temperature that inkjet ink chamber measured, determine whether producing a pre-thermal signal to driver module 126, therefore, when weights computing module 160 carries out the calculating of the concentrated weights of heat, at first promptly concentrate the counting index 172 accumulative totals number of the jet orifice of all predetermined ejection ink dot continuously, and the jet orifice of each predetermined ejection ink dot there is all the heat of a correspondence to concentrate counting index 172 with heat.Concentrate weight table 170 according to heat, different heat concentrates counting index 172 pairing heat to concentrate weights 174 freely to set, so with different code names (as: a, b, c, d, e ...) represent, the code name of the concentrated weights of each heat also can be via in fact needing or setting actual numerical value through experiment, just heat is concentrated weight setting value 176, calculates with convenient.With the present embodiment is example: W (1)=a=1, W (2)=b=2, W (3)=c=3, W (4)=d=4, W (4)=e=5 ...For instance, if weights computing module 160 finds to have three continuous jet orifice of all being scheduled to the ejection ink dot, then heat concentrates counting index 172 to vary to 3 by 1, the heat of three jet orifice concentrates 174 of weights to be respectively a, b, c, and the total weight value result of calculation that heat is concentrated is Wtotal=W (1)+W (2)+W (3)=a+b+c=6.And this heat concentrates total weight value Wtotal promptly to represent the hot intensity of the jet orifice of this printing.
Similarly, include three fields in the heat leakage weight table 180: heat leakage counting index (heat-subtraction index, k) 182, heat leakage weights (heat-subtraction weight, C (k)) 184 and heat leakage weight setting value (heat-subtraction weight value) 186.Because weights computing module 160 is except the hot concentration effect of the jet orifice of considering predetermined ejection ink dot in the control circuit 100 of the present invention, also the effect of heat leakage can be taken into account in the lump, therefore, when each the printing, also the heat leakage weights of the jet orifice of all non-predetermined ejection ink dots can be calculated, more comprehensive its driving energy size of drive signal that should export of decision.And weights computing module 160 is when carrying out the calculating of heat leakage weights, must count that index 182 calculates with heat leakage all is the number of the jet orifice of non-predetermined ejection ink dot continuously, and can be inequality at its heat leakage weights 184 of jet orifice of each non-predetermined ejection ink dot, so with different code names (as: A, B, C, D, E ...) represent, the code name of each heat leakage weights also can be via in fact needing or setting actual numerical value through experiment, just heat leakage weight setting value 186, calculate with convenient.With the present embodiment is example: C (1)=A=0, C (2)=B=1, C (3)=C=1, C (4)=D=2, C (5)=E=2 ...For instance, if it all is the jet orifice of non-predetermined ejection ink dot continuously that weights computing module 160 finds to have three, then heat leakage counting index 182 can vary to 3 by 1,184 of the heat leakage weights of three jet orifice are respectively A, B, C, and heat leakage total weight value result of calculation is Ctotal=C (1)+C (2)+C (3)=A+B+C=0+1+1=2.And this heat leakage total weight value Ctotal promptly represents the heat leakage degree of the jet orifice of this printing.
With reference to Fig. 7, Fig. 7 is the process flow diagram of a kind of embodiment of total weight value account form of the present invention.Weights computing module of the present invention is when calculating the total weight value of once printing, can different account forms be arranged because of actual needs, following embodiment is that the ink gun that is arranged as orthoscopic with jet orifice is an example, and the hot concentration effect of only considering jet orifice comes total weight value is calculated, and its flow process is as follows: step 702: beginning; Step 704: print data counting index n is made as 1; Heat concentrates counting index m to be made as 1; Heat concentrates total weight value Wtotal to be made as 0; Total weight value SUM is made as 0; Step 706: read n print data Data (n); Is step 708: the value of n print data Data (n) 1? be, to step 712; Not, to step 710; Step 710: heat concentrates counting index m to be made as 1, to step 716; Step 712: concentrate weight table (with reference to figure 6) according to heat, concentrate weights W (m) to be added to heat heat and concentrate total weight value Wtotal; Step 714: concentrate counting index m to add 1 heat; Step 716: print data is counted index n add 1; Step 718: whether also have next record print data Data (n)? be, to step 706; Not, to step 720; Step 720: total weight value SUM is made as heat and concentrates total weight value Wtotal.Step 722: finish.
In order to make present embodiment be easier to understand, do explanation with the example after simplifying at this.Suppose total eight jet orifice of arranging in line of a certain specific ink gun, and the received signal of each jet orifice is represented with Data (1), Data (2), Data (3), Data (4), Data (5), Data (6), Data (7), Data (8) respectively.If signal value is 1, expression ejection ink; Signal value is 0, represents not ink-jet water.Example one: Data (1)=1, Data (2)=1, Data (3)=1, Data (4)=1, Data (5)=0, Data (6)=0, Data (7)=0, Data (8)=0 process flow diagram with reference to the concentrated weight table of the heat of Fig. 6 and Fig. 7 can calculate SUM=a+b+c+d=1+2+3+4=10.Example two: Data (1)=0, Data (2)=1, Data (3)=1, Data (4)=0, Data (5)=0, Data (6)=1, Data (7)=1, Data (8)=0 in like manner can calculate SUM=a+b+a+b=1+2+1+2=6.Example three: Data (1)=1, Data (2)=0, Data (3)=0, Data (4)=1, Data (5)=0, Data (6)=1, Data (7)=0, Data (8)=1 then in like manner can calculate SUM=a+a+a+a=1+1+1+1=4.In these three examples, each print want to drive the jet orifice of ink-jet simultaneously number all be all four, but the distribution situation of the jet orifice of these four predetermined ejection ink dots is also inequality, print data 30 is that (1,1,1,1,0,0,0,0) is comparatively concentrated for the first time, print data 30 is that (0,1,1,0,0,1,1,0) comparatively disperses for the second time, and print data 30 is that (1,0,0,1,0,1,0,1) more disperses for the third time.And weights computing module of the present invention 160 is when calculating total weight value SUM according to above-mentioned account form, can obtain 10,6 respectively, 4 three kind of different total weight value result of calculation, thereby the pre-thermal signal that is produced of three kinds of situations is also inequality.
With reference to Fig. 8, Fig. 8 is the sequential chart of a kind of embodiment of total weight value account form of the present invention.If the total weight value SUM of result of calculation is bigger, then represent hot concentration effect more obvious, thereby the energy of corresponding pre-thermal signal should be less, shown in pre-thermal signal 137 and 147, on the contrary, if the total weight value SUM of result of calculation is less, then represent hot concentration effect more not obvious, thereby the energy of corresponding pre-thermal signal should be bigger, shown in pre-thermal signal 139 and 149.
Particularly point out at this, drive signal 136 and drive signal 146 are all applicable to the drive signal of control circuit of the present invention, its difference is that the pre-thermal signal 137,138,139 in the drive signal 136 all has identical magnitude of voltage, but have different pulse widths (Duration), utilize the difference of pulse width can form the pre-thermal signal of different-energy.And pre-thermal signal 147,148,149 all has same pulse width in the drive signal 146, but has different magnitudes of voltage, utilizes the difference of magnitude of voltage also can form the pre-thermal signal of different-energy.Except these two kinds of drive signals, also have the drive signal of many multi-form variations, so long as can make the driving energy that is had between the wherein different pre-thermal signals variant, to reach the effect of temperature compensation, all applicable to the present invention.
In addition, when practice, total weight value SUM simple zones can be divided into two sections, for example: when SUM≤12, send a pre-thermal signal; And when SUM＞12, do not apply pre-thermal signal.Perhaps also total weight value SUM can be distinguished into the several segments scope to send suitable pre-thermal signal.For example: when SUM≤5, use first kind of pre-thermal signal; When 5＜SUM≤9, use second kind of pre-thermal signal; When 9＜SUM≤12, then use the third pre-thermal signal; When SUM＞12, then do not apply any pre-thermal signal.And first kind, second kind, the third drive signal can have different pulse width (Duration) or magnitude of voltage, different energy is offered the heating element in the inkjet ink chamber.
Control circuit 100 of the present invention at first can utilize measuring temp device 190 to be used for measuring the temperature (T) of inkjet ink chamber in the ink gun, and the temperature reference value (Tr) that configures in advance in the temperature that will measure and the storer 150 is compared, after temperature relatively is over, also can calculate for the predetermined distribution scenario that sprays the inkjet ink chamber of ink dot, to draw total weight value (SUM), and calculation mode has been illustrated in Fig. 7 and have real example to describe in detail as Fig. 8, does not then add to give unnecessary details at this.
With reference to Fig. 9 (a)～(f), Fig. 9 (a)～(f) is different inkjet ink chamber temperature (T) during for different total weight values (SUM), the synoptic diagram of drive signal 155.Total weight value (SUM) can be compared with the one first total weight value reference value SUMr1 or the one second total weight value reference value SUMr2 that configure in advance in the storer 150, with the collected state of the inkjet ink chamber that determines predetermined ejection ink dot.Wherein, in the present embodiment, SUMr1=5, SUMr2=8.Shown in Fig. 9 (a)～(f), (T＞Tr) and total weight value are greater than the first total weight value reference value (SUM＞SUMr1) greater than temperature reference value for the temperature that equivalent measures, represent that then the hot concentration phenomenon of inkjet ink chamber is remarkable in the ink gun, as long as therefore comprise heating signal 157 (as (a) and (b)) in the drive signal 155 that will apply; (T＞Tr) and total weight value (are SUM＜SUMr1) less than the first total weight value reference value SUMr1 to the temperature that equivalent measures greater than temperature reference value, represent that then the hot concentration phenomenon of inkjet ink chamber belongs to normal conditions in the ink gun, therefore just must comprise pre-thermal signal 156 and heating signal 157 (shown in (c)) in the drive signal 155 that will apply; (but the total weight value of T＜Tr) (is SUM＞SUMr2) greater than the second total weight value reference value SUMr2 to the temperature that equivalent measures less than temperature reference value, represent that then the hot concentration phenomenon of inkjet ink chamber is more higher in the ink gun, as long as therefore also comprise heating signal 157 (shown in (d)) in the drive signal 155 that will apply; (T＜Tr) and total weight value are less than the second total weight value reference value (SUM＜SUMr2) less than temperature reference value for the temperature that equivalent measures, represent that then inkjet ink chamber there is no hot concentration phenomenon generation in the ink gun, therefore just must comprise pre-thermal signal 156 and heating signal 157 (as (e) and (f)) in the drive signal 155 that will apply.
With reference to Figure 10, Figure 10 is first kind the control flow chart that total weight value account form be embodiment of the present invention with Fig. 7.Above-mentioned flow process is as follows with flowcharting: step 902: beginning; Step 904: read temperature reference value (Tr) default in the storer 150, and measure the temperature (T) of inkjet ink chamber in the ink gun by measuring temp device 190; Step 908: is the temperature that measures greater than temperature reference value (T＞Tr)? be, to step 910; Not, to step 918; Step 910: the total weight value (SUM) that calculates ink gun with the flow process of Fig. 7; Step 912: is the result of calculation of total weight value greater than the first total weight value reference value (SUM＞SUMr1)? be, to step 914; Not, to step 916; Step 914: only comprise heating signal in the drive signal that is applied, to step 926; Step 916: comprise pre-thermal signal and heating signal in the drive signal that is applied, to step 926; Step 918: the total weight value (SUM) that calculates ink gun with the flow process of Fig. 7; Step 920: is the result of calculation of total weight value greater than the second total weight value reference value (SUM＞SUMr2)? be, to step 922; Not, to step 924; Step 922: only comprise heating signal in the drive signal that is applied, to step 926; Step 924: comprise pre-thermal signal and heating signal in the drive signal that is applied, to step 926; Step 926: finish.
Though the flow process of Figure 10 only is divided into two sections with total weight value SUM simple zones, apply pre-thermal signal or do not apply pre-thermal signal, yet also can be as previously mentioned, total weight value SUM is distinguished into the several segments scope, and the pre-thermal signal of sending different pulse widths or magnitude of voltage is to driver module 126, to provide different-energy, to the preheating in various degree of inkjet ink chamber do to the heating element in the inkjet ink chamber.
The foregoing description is at the be arranged in a straight line ink gun of formula of jet orifice.The present invention also can be applicable to the ink gun that jet orifice is arranged in matrix form.With reference to Figure 11 and Figure 12, Figure 11 is used for the synoptic diagram of a kind of embodiment of matrix form ink gun for total weight value account form of the present invention.Figure 12 is used for the synoptic diagram of the another kind of embodiment of matrix form ink gun for total weight value account form of the present invention.Figure 11 and Figure 12 are that the ink gun that is arranged as matrix form with jet orifice is an example, and only consider that the hot concentration effect of jet orifice comes total weight value is calculated.When the jet orifice of ink gun is arranged as matrix form, it can be divided into the jet orifice of multirow (C1, C2, C3) or the jet orifice of multiple row (R1, R2, R3, R4, R5), then each row jet orifice or row jet orifice then can be considered the jet orifice of orthoscopic, and calculated with the weights calculation process of Fig. 7, last again with the weights results added of all row with row, in the hope of its total weight value result of calculation (SUM), its detailed calculation procedure 210,220 also is shown among Figure 11 and Figure 12.By the embodiment of Figure 11 and Figure 12 as can be seen, both are all six by the inkjet ink chamber number of predetermined ejection ink dot, but the inkjet ink chamber of Figure 11 distributes and comparatively disperses, therefore total weight value result of calculation is less, have only 13, and that the inkjet ink chamber of the predetermined ejection of Figure 12 ink dot distributes is comparatively concentrated, thus total weight value result of calculation be 21 than Figure 11 for big.
With reference to Figure 13, Figure 13 is used in the process flow diagram of matrix form ink gun for total weight value account form of the present invention.When the jet orifice of ink gun was arranged as matrix form, the flow process of its total weight value account form was as follows: step 1202: beginning; Step 1204: the total weight value that calculates each row jet orifice; Step 1206: the total weight value that calculates each row jet orifice; Step 1208: with the total weight value addition of all row jet orifice and row jet orifice, to obtain whole total weight value; Step 1210: finish.
With reference to Figure 14, Figure 14 is the process flow diagram of the another kind of embodiment of total weight value account form of the present invention.Weights computing module of the present invention is when calculating the total weight value of once printing, can different account forms be arranged because of actual needs, following embodiment is that the ink gun that is arranged as orthoscopic with jet orifice is an example, and consider that simultaneously the hot concentration effect of jet orifice and the heat leakage effect of jet orifice come total weight value is calculated, its flow process is as follows: step 1302: beginning, to step 1304; Step 1304: print data counting index n is made as 1; Heat concentrates counting index m to be made as 1; Heat leakage counting index k is made as 1; Heat concentrates total weight value Wtotal to be made as 0; Heat leakage total weight value Ctotal is made as 0; Total weight value SUM is made as 0, to step 1306.Step 1306: read into n print data DATA (n), to step 1308; Be step 1308: n print data DATA (n) 1? be, to step 1314; Not, to step 1310; Step 1310: according to heat leakage weight table (with reference to Fig. 6), heat leakage weights C (k) is added to heat leakage total weight value Ctotal, to step 1312; Step 1312: heat leakage counting index k adds 1, and heat concentrates counting index m to be set at 1, to step 1318; Step 1314: concentrate weight table (with reference to Fig. 6) according to heat, concentrate weights W (m) to be added to heat heat and concentrate total weight value Wtotal, to step 1316; Step 1316: heat concentrates counting index m to add 1, and heat leakage counting index k is set at 1, to step 1318; Step 1318: print data is counted index n add 1, to step 1320; Step 1320: whether also have other print datas? be, to step 1308; Not, to step 1322; Step 1322: total weight value SUM is made as heat and concentrates total weight value table Wtotal to deduct heat leakage total weight value Ctotal, to step 1324; Step 1324: finish.
For the total weight value account form that Figure 14 is introduced is easier to understand, do explanation with the example after simplifying at this.Suppose total eight jet orifice of arranging in line of ink gun, and the received signal of each jet orifice is represented with Data (1), Data (2), Data (3), Data (4), Data (5), Data (6), Data (7), Data (8) respectively.If signal value is 1, expression ejection ink; Signal value is 0, represents not ink-jet water.Example one: Data (1)=1, Data (2)=1, Data (3)=1, Data (4)=1, Data (5)=0, Data (6)=0, Data (7)=0, Data (8)=0 then concentrate the process flow diagram of weight table and Figure 14 can calculate SUM=Wtotal-Ctotal=(a+b+c+d)-(A+B+C+D)=(1+2+3+4)-(0+1+1+2)=6 with reference to the heat of Fig. 6.Example two: Data (1)=0, Data (2)=1, Data (3)=1, Data (4)=0, Data (5)=0, Data (6)=1, Data (7)=1, Data (8)=0 in like manner can calculate SUM=Wtotal-Ctotal=(a+b+a+b)-(A+A+B+A)=(1+2+1+2)-(0+0+1+0)=5.Example three: Data (1)=1, Data (2)=0, Data (3)=0, Data (4)=1, Data (5)=0, Data (6)=1, Data (7)=0, Data (8)=1 then in like manner can calculate SUM=Wtotal-Ctotal=(a+a+a+a)-(A+B+A+A)=(1+1+1+1)-(0+1+0+0)=3.Owing to the effect of heat leakage is also taken into account, so present embodiment can calculate suitable pre-thermal signal more accurately.
With reference to Figure 15, Figure 15 is the sequential chart of a kind of embodiment of total weight value account form of the present invention.Above-mentioned example can be represented with Figure 15, the print data 130 of Figure 15 is identical with Fig. 8, but weights computing module 160 is except the hot concentration effect of considering jet orifice, also considered the effect of the heat leakage of jet orifice in addition, therefore, after concentrating total weight value Wtotal and heat leakage total weight value Ctotal all to calculate heat, both are subtracted each other just can obtain total weight value SUM result of calculation, be respectively 6,5,3, thereby the pre-thermal signal of three kinds of situations is also inequality, is respectively pre-thermal signal 1137,1138,1139.As can be seen, the total weight value result of calculation that print data 30 first time (1,1,1,1,0,0,0,0) is drawn is still bigger, the driving energy of therefore pre-thermal signal 1137 is less, and the total weight value result of calculation that drawn for (1,0,0,1,0,1,0,1) of print data 30 is still lessly for the third time, and the driving energy of therefore pre-thermal signal 1139 is bigger.
With reference to Figure 16, Figure 16 is used for the synoptic diagram of a kind of embodiment of matrix form ink gun for total weight value account form of the present invention.Figure 16 is an example with the ink gun that jet orifice is arranged as matrix form, and the hot concentration effect and the heat leakage effect of jet orifice taken into account in the lump, and total weight value is calculated.The jet orifice of ink gun can be divided into the jet orifice of multirow (C1, C2, C3) or the jet orifice of multiple row (R1, R2, R3, R4, R5) equally, then each row jet orifice or row jet orifice then can be considered the jet orifice of orthoscopic, and calculated with the weights account form of Figure 14, last again with the weights results added of all row, in the hope of its total weight value result of calculation with row.
Need to prove that according to this enforcement in some cases, the value of SUM may be less than zero, yet this does not influence enforcement of the present invention.When practice, SUM can be distinguished into the several segments scope to send suitable pre-thermal signal.For example: when SUM≤0, use first kind of pre-thermal signal; When 0＜SUM≤10, use second kind of pre-thermal signal; When 10＜SUM≤20, use the third pre-thermal signal; When 20＜SUM, then use the 4th kind of pre-thermal signal.And first kind, second kind, the third, the 4th kind of pre-thermal signal can have different pulse widths or magnitude of voltage, to provide different energy to the ink in the inkjet ink chamber and to its preheating.
Above-described various total weight value account form, can be used for calculating and the assessment ink gun in hot concentration effect whether remarkable, therefore also can look actual needs, be used for replacing the total weight value account form of step 910 and step 918 among Figure 10.
Control flow of the present invention, can measure the temperature of ink gun via measuring temp device 190, and cooperate above-mentioned various total weight value account form, hot concentration effect to ink gun calculates, so that decision whether during for current the printing jet orifice of all predetermined ejection ink dots apply pre-thermal signal, or apply which kind of the degree pulse width or the pre-thermal signal of magnitude of voltage.Yet, the present invention also can be according to another account form, the heat of the jet orifice of some predetermined ejection ink dot concentrates weights calculate when printing at every turn, so that at the hot concentration effect of this jet orifice, determine whether applying corresponding pre-thermal signal.
Therefore correspond to the control flow of Figure 10, the another kind of control flow of the present invention is when each printings, the number of the jet orifice of the adjacent predetermined ejection ink dot of the jet orifice of some predetermined ejection ink dots is calculated, to draw its hot concentrated weights (W).For example: have eight adjacent jet orifice around the common jet orifice, therefore can check in these eight adjacent jet orifice, what have individual to be the jet orifice of predetermined ejection ink dot, if five, the concentrated weights W of heat that just defines this jet orifice is 5, if two, the concentrated weights W of heat that just defines this jet orifice is 2.That is to say that when the jet orifice of predetermined ejection ink dot adjacent had the jet orifice of how predetermined more ejection ink dot, then the heat of this jet orifice concentrated weights bigger, otherwise then its heat concentrates weights littler.
With reference to Fig. 5.In order to cooperate the above-mentioned control flow of the present invention, storer 150 in control circuit 100 stores a temperature reference value (Tr) 192 and a heat is concentrated weights reference value (Wr1, Wr2) 196, the temperature (T) that processor 140 can be measured measuring temp device 190 is made comparisons with temperature reference value (Tr) 192, and the heat of certain jet orifice is concentrated the result of calculation (W) of weights and the heat in the storer 150 concentrate weights reference value (Wr1, Wr2) 196 make comparisons, and whether decision produces pre-thermal signal, or determines the pulse width of pre-thermal signal or the degree of magnitude of voltage.Need be illustrated a bit at this, temperature reference value (Tr) 192 and heat are concentrated the weights reference value (Wr1, Wr2) 196 visual actual needs are in addition given, for example: Tr=50 ℃ and Wr1=6, Wr2=4, and can being adjusted via resetting.
With reference to Figure 17, Figure 17 is the another kind of control flow chart of the present invention.
Can above-mentioned flow process is as follows with flowcharting at this: step 1602: beginning; Step 1604: read temperature reference value (Tr) default in the storer 150, and measure the temperature (T) of inkjet ink chamber in the ink gun by measuring temp device 190; Step 1608: is the temperature that measures greater than temperature reference value (T＞Tr)? be, to step 1601; Not, to step 1618; Step 1610: check this jet orifice jet orifice number of adjacent predetermined ejection ink dot on every side, concentrate the result of calculation (W) of weights to determine its heat; Does step 1612: heat concentrate the result of calculation (W) of weights to concentrate weights reference value (Wr1) greater than first heat? be, to step 1614; Not, to step 1616; Step 1614: only comprise heating signal in the drive signal that is applied, to step 1626; Step 1616: comprise pre-thermal signal and heating signal in the drive signal that is applied, to step 1626; Step 1618: check this jet orifice jet orifice number of adjacent predetermined ejection ink dot on every side, concentrate the result of calculation (W) of weights to determine its heat; Does step 1620: heat concentrate the result of calculation (W) of weights to concentrate weights reference value (Wr2) greater than second heat? be, to step 1622; Not, to step 1624; Step 1622: only comprise heating signal in the drive signal that is applied, to step 1626; Step 1624: comprise pre-thermal signal and heating signal in the drive signal that is applied, to step 1626; Step 1626: finish.
Though the flow process of Figure 17 only concentrates weights result of calculation (W) simple zones to be divided into two sections the heat of jet orifice, apply pre-thermal signal or do not apply pre-thermal signal, yet also can be as previously mentioned, concentrate weights result of calculation (W) to be distinguished into the several segments scope heat, and the pre-thermal signal of sending different pulse widths or magnitude of voltage is to driver module 126, to provide different-energy, to the preheating in various degree of inkjet ink chamber do to the heating element in the inkjet ink chamber.
As previously described, can the number of the jet orifice of the adjacent predetermined ejection ink dot of the jet orifice of some predetermined ejection ink dots be calculated, concentrate weights (W) to draw its heat, again heat is concentrated weights (W) and the heat in the storer 150 to concentrate weights reference value (Wr1, Wr2) 196 make comparisons, whether produce pre-thermal signal with decision, or determine the pulse width of pre-thermal signal or the degree of magnitude of voltage.Yet in addition, also can adopt another simpler method of the present invention, promptly be that the number with the jet orifice of the adjacent predetermined ejection ink dot of the jet orifice of predetermined ejection ink dot determines whether producing pre-thermal signal.And before explanation this method, what specify any is that drive signal clock figure noted earlier and relevant narration are the simplification of having passed through certain degree because of the cause easily of narration.In fact, ink-jet controlling circuit 100 not only can be exported a drive signal, but can export a plurality of drive signals, so that each heating element of ink gun comes corresponding inkjet ink chamber heating according to a drive signal respectively.Yet however, the method for the said all temps compensation in front stands good in transmitting a drive signal respectively to control the situation of each heating element.
With reference to Figure 18, Figure 18 is the third control flow chart of the present invention.The third control mode of the present invention is that the number with the jet orifice of the adjacent predetermined ejection ink dot of the jet orifice of predetermined ejection ink dot decides jet orifice of this predetermined ejection ink dot whether to need pre-thermal signal, and its flow process is as follows: step 1702: beginning; Step 1704: read temperature reference value (Tr) default in the storer 150, and measure the temperature (T) of inkjet ink chamber in the ink gun by measuring temp device 190; Step 1708: is the temperature that measures greater than temperature reference value (T＞Tr)? be, to step 1710; Not, to step 1718; Step 1710: check this jet orifice jet orifice number (M) of adjacent predetermined ejection ink dot on every side; Step 1712: is jet orifice number (M) greater than the first jet orifice number reference value (Mr1)? be, to step 1714; Not, to step 1716; Step 1714: only comprise heating signal in the drive signal that is applied, to step 1726; Step 1716: comprise pre-thermal signal and heating signal in the drive signal that is applied, to step 1726; Step 1718: check this jet orifice jet orifice number (M) of adjacent predetermined ejection ink dot on every side; Step 1720: is jet orifice number (M) greater than the second jet orifice number reference value (Mr2)? be, to step 1722; Not, to step 1724; Step 1722: only comprise heating signal in the drive signal that is applied, to step 1726; Step 1724: comprise pre-thermal signal and heating signal in the drive signal that is applied, to step 1726; Step 1726: finish.
As previously described, control circuit of ink-ejecting head 100 not only can be exported the heating action that a drive signal is controlled heating element, but can export a plurality of drive signals, so that each heating element of ink gun will does a more clearly explanation to this below to corresponding inkjet ink chamber heating according to a drive signal respectively.With reference to Figure 19 (a)～(b), Figure 19 (a)～(b) is when utilizing the third control flow, and jet orifice 242 is in different inkjet ink chamber temperature (T) down and during different adjacent ink-jet hole count, the synoptic diagram of its drive signal 244.Wherein, the first jet orifice number reference value (Mr1)=0, and the second jet orifice number reference value (Mr2)=1.Ink gun 240 total eight jet orifice 242 of arranging in line, and each jet orifice 242 received drive signal 244 its values are represented with Data (1), Data (2), Data (3), Data (4), Data (5), Data (6), Data (7), Data (8) respectively.Each drive signal 244 is the jet orifice 242 corresponding to its left among the figure.If drive signal value is 1, expression ejection ink; Drive signal value is 0, represents not ink-jet water.As shown in the figure, Data (1)=0, Data (2)=1, Data (3)=1, Data (4)=1, Data (5)=1, Data (6)=0, Data (7)=1, Data (8)=0.Control circuit 100 can decide drive signal 244 according to each jet orifice 242 its adjacent ink-jet hole count.Shown in Figure 19 (a), the temperature that equivalent measures is greater than temperature reference value (during T＞Tr), if jet orifice 242 adjacent ink-jet hole counts were greater than 0 o'clock (M＞Mr1), only comprise heating signal 246 in the drive signal 244 that it applied, if jet orifice 242 adjacent ink-jet hole counts are not more than at 0 o'clock (M≤Mr1), except comprising heating signal 246, also comprised pre-thermal signal 248 in the drive signal 244 that it applied.Shown in Figure 19 (b), the temperature that equivalent measures is less than temperature reference value (during T＜Tr), if jet orifice 242 adjacent ink-jet hole counts were greater than 1 o'clock (M＞Mr2), only comprise heating signal 246 in the drive signal 244 that it applied, if jet orifice 242 adjacent ink-jet hole counts are not more than 1 (during M≤Mr2), except comprising heating signal 246, also comprised pre-thermal signal 248 in the drive signal 244 that it applied.Thus, control circuit 100 can be exported different drive signal 244 to jet orifice 242, so that the sizes of ink dots that jet orifice 242 is sprayed can be consistent according to each jet orifice 242 its adjacent ink-jet hole count.
With reference to Figure 20 (a)～(b), Figure 20 (a)～(b) is when utilizing the third control flow, and the jet orifice 252 of matrix form ink gun 250 is in different inkjet ink chamber temperature (T) down and during different adjacent ink-jet hole count, the synoptic diagram of its drive signal 254.Wherein, the first jet orifice number reference value (Mr1)=1, and the second jet orifice number reference value (Mr2)=3.Matrix form ink gun 250 total 16 jet orifice 252 that are arranged in two straight lines, and received drive signal 254 its values of first each jet orifice of row 252 are respectively with Data (1,1), Data (1,2), Data (1,3), Data (1,4), Data (1,5), Data (1,6), Data (1,7), Data (1,8) expression, and received drive signal 254 its values of second each jet orifice of row 252 are respectively with Data (2,1), Data (2,2), Data (2,3), Data (2,4), Data (2,5), Data (2,6), Data (2,7), Data (2,8) expression.Each drive signal 254 is corresponding to its adjacent jet orifice 252 among the figure.If drive signal value is 1, expression ejection ink; Drive signal value is 0, represents not ink-jet water.As shown in the figure, Data (1,1)=0, Data (1,2)=1, Data (1,3)=1, Data (1,4)=1, Data (1,5)=0, Data (1,6)=0, Data (1,7)=0, Data (1,8)=0, Data (2,1)=0, Data (2,2)=0, Data (2,3)=1, Data (2,4)=1, Data (2,5)=0, Data (2,6)=0, Data (2,7)=1, Data (2,8)=0.Control circuit can decide drive signal 254 according to each jet orifice 252 its adjacent ink-jet hole count.Shown in Figure 20 (a), the temperature that equivalent measures is greater than temperature reference value (during T＞Tr), if jet orifice 252 adjacent ink-jet hole counts are greater than 1 (during M＞Mr1), only comprise heating signal 256 in the drive signal 254 that it applied, if jet orifice 252 adjacent ink-jet hole counts are not more than 1 (during M≤Mr1), except comprising heating signal 256, also comprised pre-thermal signal 258 in the drive signal 254 that it applied.Shown in Figure 20 (b), the temperature that equivalent measures is less than temperature reference value (during T＜Tr), if jet orifice 252 adjacent ink-jet hole counts were greater than 3 o'clock (M＞Mr2), only comprise heating signal 256 in the drive signal 244 that it applied, if jet orifice 252 adjacent ink-jet hole counts are not more than 3 (during M≤Mr2), except comprising heating signal 256, also comprised pre-thermal signal 258 in the drive signal 254 that it applied.Thus, control circuit is exported different drive signal 254 to jet orifice 252, so that the sizes of ink dots that jet orifice 252 is sprayed can be consistent according to each jet orifice 252 its adjacent ink-jet hole count.
With reference to Figure 21, Figure 21 is the 4th kind of control flow chart of the present invention.The 4th kind of control mode of the present invention is the pulse width that determines whether producing pre-thermal signal and pre-thermal signal with the number of the jet orifice of the adjacent predetermined ejection ink dot of the jet orifice of predetermined ejection ink dot, and its flow process is as follows: step 1802: beginning; Step 1804: read temperature reference value (Tr) default in the storer 150, and measure the temperature (T) of inkjet ink chamber in the ink gun by measuring temp device 190; Step 1808: is the temperature that measures greater than temperature reference value (T＞Tr)? be, to step 1810; Not, to step 1818; Step 1810: check this jet orifice jet orifice number (M) of adjacent predetermined ejection ink dot on every side; Step 1812: is jet orifice number (M) greater than the first jet orifice number reference value (Mr1)? be, to step 1814; Not, to step 1816; Step 1814: only comprise heating signal in the drive signal that is applied, to step 1826; Step 1816: comprise first pre-thermal signal and the heating signal in the drive signal that is applied, to step 1826; Step 1818: check this jet orifice jet orifice number (M) of adjacent predetermined ejection ink dot on every side; Step 1820: is jet orifice number (M) greater than the second jet orifice number reference value (Mr2)? be, to step 1822; Not, to step 1824; Step 1822: comprise second pre-thermal signal and the heating signal in the drive signal that is applied, to step 1826; Step 1824: comprise the 3rd pre-thermal signal and heating signal in the drive signal that is applied, to step 1826; Step 1826: finish.
With reference to Figure 22 (a)～(b), Figure 22 (a)～(b) is when utilizing the 4th kind of control flow, and the jet orifice 262 of matrix form ink gun 260 is in different inkjet ink chamber temperature (T) down and during different adjacent ink-jet hole count, the synoptic diagram of its drive signal 264.Wherein, the first jet orifice number reference value (Mr1)=1, and the second jet orifice number reference value (Mr2)=3.In addition, the pulse width of the first pre-thermal signal 268 is less than the pulse width of the second pre-thermal signal 272, and the pulse width of the second pre-thermal signal 272 is less than the pulse width of the 3rd pre-thermal signal 274.Matrix form ink gun 260 total 16 jet orifice 262 that are arranged in two straight lines, and received drive signal 264 its values of first each jet orifice of row 262 are respectively with Data (1,1), Data (1,2), Data (1,3), Data (1,4), Data (1,5), Data (1,6), Data (1,7), Data (1,8) expression, and received drive signal 264 its values of second each jet orifice of row 262 are respectively with Data (2,1), Data (2,2), Data (2,3), Data (2,4), Data (2,5), Data (2,6), Data (2,7), Data (2,8) expression.Each drive signal 264 is corresponding to its adjacent jet orifice 262 among the figure.If drive signal value is 1, expression ejection ink; Drive signal value is 0, represents not ink-jet water.As shown in the figure, Data (1,1)=0, Data (1,2)=1, Data (1,3)=1, Data (1,4)=1, Data (1,5)=0, Data (1,6)=0, Data (1,7)=0, Data (1,8)=0, Data (2,1)=0, Data (2,2)=0, Data (2,3)=1, Data (2,4)=1, Data (2,5)=0, Data (2,6)=0, Data (2,7)=1, Data (2,8)=0.Control circuit can decide drive signal 264 according to each jet orifice 262 its adjacent ink-jet hole count.Shown in Figure 22 (a), the temperature that equivalent measures is greater than temperature reference value (during T＞Tr), if jet orifice 262 adjacent ink-jet hole counts are greater than 1 (during M＞Mr1), only comprise heating signal 266 in the drive signal 264 that it applied, if jet orifice 262 adjacent ink-jet hole counts are not more than 1 (during M≤Mr1), except comprising heating signal 266, also comprised the first pre-thermal signal 268 in the drive signal 264 that it applied.Shown in Figure 22 (b), the temperature that equivalent measures is less than temperature reference value (during T＜Tr), if jet orifice 262 adjacent ink-jet hole counts were greater than 3 o'clock (M＞Mr2), in the drive signal 264 that it applied except comprising heating signal 266, also comprised the second pre-thermal signal 272, if being not more than 3, jet orifice 262 adjacent ink-jet hole counts (during M≤Mr2), except comprising heating signal 266, also comprised the 3rd pre-thermal signal 274 in the drive signal 264 that it applied.In addition, because the pulse width of the first pre-thermal signal 268 is less than the pulse width of the second pre-thermal signal 272, and the pulse width of the second pre-thermal signal 272 is less than the pulse width of the 3rd pre-thermal signal 274, therefore can be by the pre-thermal signal of the different pulse widths of output, and make thermal effect energy equiblibrium mass distribution between inkjet ink chamber, and the sizes of ink dots that jet orifice 262 is sprayed can be consistent.Yet specify, not necessarily must use the drive signal of pre-thermal signal in the present embodiment with different pulse widths, as long as drive signal can make the wherein different driving energy that had between the thermal signals in advance difference to some extent, and can reach the effect of temperature compensation, all applicable to the present invention, for example: the identical but different drive signal of degree magnitude of voltage of preheating signal pulse width.
Control circuit 100 of the present invention can measure the temperature (T) of inkjet ink chamber in the ink gun, in the control flow of embodiment one, weights computing module 160 also can be according to needs, the hot concentration effect of the jet orifice of the ink dot of the predetermined ejection of consideration simultaneously and the effect of heat leakage, whether pre-thermal signal be to apply with decision in the drive signal, even the pulse width of pre-thermal signal or the degree of magnitude of voltage determined.In the control flow of embodiment two, computing module also can calculate the jet orifice number of adjacent predetermined ejection ink dot, concentrate the result of calculation of weights to determine its heat, whether will apply pre-thermal signal in the decision drive signal, even determine the pulse width of pre-thermal signal or the degree of magnitude of voltage, thus, the pulse width of the heating signal in the drive signal or magnitude of voltage may be controlled to fixing, and only change the pre-thermal signal in the drive signal.In the control flow of embodiment three, computing module is according to the jet orifice number of the adjacent predetermined ejection ink dot that is calculated, and decides in the drive signal whether will apply pre-thermal signal.In the control flow of embodiment four, computing module is according to the jet orifice number of the adjacent predetermined ejection ink dot that is calculated, and decides in the drive signal whether will apply pre-thermal signal, and determines the pulse width of pre-thermal signal or the degree of magnitude of voltage.Therefore, the only number of the jet orifice of the predetermined ejection of consideration ink dot of comparing with known technology more can make thermal effect energy equiblibrium mass distribution between the different inkjet ink chamber of ink gun, and then the sizes of ink dots of ejection is reached unanimity, and makes printed product mass-energy reach better effect.
The above only is preferred embodiment of the present invention, and all equivalent variations and modifications of being done according to claim scope of the present invention all should belong to the covering scope of claim of the present invention.For example: among the above embodiment, heating element is arranged on inkjet ink chamber inside, is that heating element is arranged on the inkjet ink chamber outside but the design of part ink gun is also arranged, and can reach the purpose of the ink of heating in the inkjet ink chamber with the ejection ink equally.Such variation is from being included in the scope that claim of the present invention contains.
Claims (22)
1. control circuit that is used for driving ink gun in the printing equipment, this ink gun includes a plurality of inkjet ink chamber and corresponding a plurality of heating element, each inkjet ink chamber can ccontaining ink in wherein and have a jet orifice, a plurality of print datas that this control circuit is sent in the time of can desiring to print according to this printing equipment at every turn are to produce a heating signal, and drive this a plurality of heating elements according to this heating signal and provide energy to heat corresponding inkjet ink chamber, and make ink form corresponding ink dot and print from the ejection of this jet orifice, this control circuit includes:
One measuring temp device is used for measuring the temperature of this ink gun and these a plurality of inkjet ink chamber;
One heat is concentrated weight table; Be used for distribution scenario according to position between the jet orifice of the jet orifice of predetermined ejection ink dot and adjacent predetermined ejection ink dot, define the concentrated weights of heat of the jet orifice of this predetermined ejection ink dot;
One computing module; Be used for concentrating weights to calculate, and draw a total weight value result of calculation according to heat of total weight value account form jet orifice of all predetermined ejection ink dots will print the time at every turn; And
One processor is used for the temperature and this total weight value result of calculation that are measured according to this measuring temp device, whether produces a pre-thermal signal with decision;
Wherein when this processor produces this pre-thermal signal, this control circuit can provide this pre-thermal signal and this heating signal to all predetermined corresponding heating elements that sprays the jet orifice of ink dots, so that this heating element can be to the heating of this inkjet ink chamber, and make ink from this jet orifice ejection and print.
2. control circuit as claimed in claim 1, wherein this control circuit also comprises a storer and is used for storing this heat and concentrates weight table.
3. control circuit as claimed in claim 2, wherein also store a temperature reference value and a total weight value reference value in this storer, this processor is that temperature and this temperature reference value that this measuring temp device is measured are made comparisons, and this total weight value result of calculation and this total weight value reference value made comparisons, and whether decision produces this pre-thermal signal.
4. control circuit as claimed in claim 3, wherein this temperature reference value and this total weight value reference value can be adjusted via resetting.
5. control circuit as claimed in claim 1 wherein when this computing module calculates different total weight value result of calculation, is promptly exported the pre-thermal signal of different pulse widths.
6. control circuit as claimed in claim 1 wherein when this computing module calculates different total weight value result of calculation, is promptly exported the pre-thermal signal of different magnitudes of voltage.
7. control circuit as claimed in claim 1, wherein the position is more close between the jet orifice of the jet orifice of a predetermined ejection ink dot and adjacent predetermined ejection ink dot, and the jet orifice of this predetermined ejection ink dot concentrates in the weight table defined heat to concentrate weights more greatly in this heat.
8. control circuit as claimed in claim 1, wherein when the jet orifice of a predetermined ejection ink dot adjacent has the jet orifice of how predetermined more ejection ink dot, the jet orifice of this predetermined ejection ink dot concentrates in the weight table defined heat to concentrate weights big more in this heat.
9. control circuit as claimed in claim 1, wherein these a plurality of jet orifice are to be line style to arrange.
10. control circuit as claimed in claim 9, wherein this total weight value account form is that all predetermined heat that spray the jet orifice of ink dots of when each the printing this line style being arranged are concentrated the weights addition, to draw this total weight value result of calculation.
11. control circuit as claimed in claim 1, wherein these a plurality of jet orifice are to be matrix type to arrange, and can divide into the jet orifice of multirow or the jet orifice of multiple row.
12. as the control circuit of claim 11, wherein this total weight value account form includes the following step:
The jet orifice that this matrix type is arranged is divided into multirow, and respectively the heat of the jet orifice of all predetermined ejection ink dots in each row is concentrated the weights addition, concentrate row weights result of calculation to draw a corresponding heat respectively;
The jet orifice that this matrix type is arranged is divided into multiple row, and respectively the heat of the jet orifice of all predetermined ejection ink dots in each row is concentrated the weights addition, concentrate row weights result of calculation to draw a corresponding heat respectively; And
Concentrate row weights result of calculation and heat to concentrate row weights result of calculation to add up all heat to draw this total weight value result of calculation.
13. control circuit as claimed in claim 1, wherein this control circuit also includes a heat leakage weight table, be used for distribution scenario according to position between the jet orifice of the jet orifice of non-predetermined ejection ink dot and adjacent non-predetermined ejection ink dot, define the heat leakage weights of the jet orifice of this non-predetermined ejection ink dot.
14. control circuit as claim 13, wherein this computing module is according to this total weight value account form, the heat of calculating the jet orifice of all predetermined ejection ink dots when each the printing is concentrated the heat leakage weights of the jet orifice of weights and all non-predetermined ejection ink dots, to draw this total weight value result of calculation.
15. as the control circuit of claim 14, wherein this total weight value account form includes the following step:
All predetermined heat that spray the jet orifice of ink dots are concentrated the weights addition, concentrate weights result of calculation to draw a heat;
With the heat leakage weights addition of the jet orifice of all non-predetermined ejection ink dots, to draw a heat leakage weights result of calculation; And
Should heat concentrate weights result of calculation to deduct this heat leakage weights result of calculation to draw this total weight value result of calculation.
16. control circuit that is used for driving ink gun in the printing equipment, this ink gun includes a plurality of inkjet ink chamber and corresponding a plurality of heating element, each inkjet ink chamber can ccontaining ink in wherein and have a jet orifice, a plurality of print datas that this control circuit is sent in the time of can desiring to print according to this printing equipment at every turn are to produce a heating signal, and drive this a plurality of heating elements according to this heating signal and provide energy to heat corresponding inkjet ink chamber, and make ink form corresponding ink dot and print from the ejection of this jet orifice, this control circuit includes:
One measuring temp device is used for measuring the temperature of this ink gun and these a plurality of inkjet ink chamber;
One computing module; Be used for concentrating weights to calculate, and draw a result of calculation according to the heat of account form jet orifice of one predetermined ejection ink dot will print the time at every turn; And
One processor is used for the temperature and this result of calculation that are measured according to this measuring temp device, whether produces a pre-thermal signal with decision;
Wherein when this processor produces this pre-thermal signal, this control circuit can provide this pre-thermal signal and this heating signal to this predetermined corresponding heating element that sprays the jet orifice of ink dot, so that this heating element can be to the heating of this inkjet ink chamber, and make ink from this jet orifice ejection and print.
17. as the control circuit of claim 16, wherein when the jet orifice of this predetermined ejection ink dot adjacent had the jet orifice of how predetermined more ejection ink dot, heat of the jet orifice of this predetermined ejection ink dot concentrated weights big more.
18., when wherein this account form lies in each printing, the number of the jet orifice of the adjacent predetermined ejection ink dot of the jet orifice of this predetermined ejection ink dot is calculated, to draw the concentrated weights of this heat as the control circuit of claim 17.
19. control circuit as claim 18, wherein this control circuit also comprises a storer to be used for storing a temperature reference value and the concentrated weights reference value of a heat, this processor is that temperature and this temperature reference value that this measuring temp device is measured are made comparisons, and concentrate the weights reference value to make comparisons this result of calculation and this heat, and whether decision produces this pre-thermal signal.
20. as the control circuit of claim 19, this temperature reference value and should heat concentrate the weights reference value to be adjusted wherein via resetting.
21., wherein when this computing module calculates different result of calculation, can export the pre-thermal signal of different pulse widths as the control circuit of claim 16.
22., wherein when this computing module calculates different result of calculation, promptly export the pre-thermal signal of different magnitudes of voltage as the control circuit of claim 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001348450A CN1179848C (en) | 2000-12-08 | 2000-12-08 | Control circuit for driving ink nozzle of printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001348450A CN1179848C (en) | 2000-12-08 | 2000-12-08 | Control circuit for driving ink nozzle of printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1357456A true CN1357456A (en) | 2002-07-10 |
| CN1179848C CN1179848C (en) | 2004-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001348450A Expired - Fee Related CN1179848C (en) | 2000-12-08 | 2000-12-08 | Control circuit for driving ink nozzle of printer |
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| Country | Link |
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| CN (1) | CN1179848C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313271C (en) * | 2003-10-03 | 2007-05-02 | 明基电通股份有限公司 | Printing apparatus and method for maintaining temperature of a printhead |
| CN101219597B (en) * | 2007-01-08 | 2010-05-19 | 研能科技股份有限公司 | Ink-jet driving circuit with preheat function |
| CN101096140B (en) * | 2006-06-28 | 2010-08-25 | 佳能株式会社 | Printhead, head cartridge, and printing apparatus employing either of same |
| US8046216B2 (en) | 2005-01-18 | 2011-10-25 | Huawei Technologies Co., Ltd. | Method and device for updating status of synthesis filters |
| CN106965556A (en) * | 2016-01-14 | 2017-07-21 | 研能科技股份有限公司 | Ink-jet controlling circuit |
-
2000
- 2000-12-08 CN CNB001348450A patent/CN1179848C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313271C (en) * | 2003-10-03 | 2007-05-02 | 明基电通股份有限公司 | Printing apparatus and method for maintaining temperature of a printhead |
| US8046216B2 (en) | 2005-01-18 | 2011-10-25 | Huawei Technologies Co., Ltd. | Method and device for updating status of synthesis filters |
| CN101096140B (en) * | 2006-06-28 | 2010-08-25 | 佳能株式会社 | Printhead, head cartridge, and printing apparatus employing either of same |
| CN101219597B (en) * | 2007-01-08 | 2010-05-19 | 研能科技股份有限公司 | Ink-jet driving circuit with preheat function |
| CN106965556A (en) * | 2016-01-14 | 2017-07-21 | 研能科技股份有限公司 | Ink-jet controlling circuit |
| CN106965556B (en) * | 2016-01-14 | 2019-04-09 | 研能科技股份有限公司 | Ink-jet controlling circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1179848C (en) | 2004-12-15 |
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