JPH11240148A - Ink jet recording device and method for driving ink jet recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the accuracy of correcting a head temperature sensor and at the same time, control the temperature increase in a printing head to suppress a decrease in the throughput during high-duty printing by switching a system (table) relative to a head temperature and a drive pulse in accordance with the correction accuracy of the head temperature sensor. SOLUTION: When a power supply for a printer is turned ON, it is interpreted whether a printing head 1 is already mounted, and when the head 1 is mounted, the provisional offset value of a head temperature sensor 10 is decided on assumption that a head temperature is equal to an intradevice temperature. Next, it is checked whether a print command is output and when the print command is not output, it is interpreted whether the correction of the sensor 10 is completed. Before completion of the correction, the correction accuracy of the sensor 10 is interpreted and when the accuracy is above a specified level, a table 2 is selected. On the contrary, when the accuracy is not above the specified level, a table 1 is selected. Further, when the correction is finally completed, a table 3 is selected. After that, a drive signal waveform corresponding to the temperature of each of the heads is selected according to the selected table.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an ink jet recording apparatus which performs recording by discharging ink onto a recording medium and a method of driving the ink jet recording apparatus.

In the present invention, "recording" means not only giving an image having a meaning such as a character or a figure to a recording medium but also giving an image having no meaning such as a pattern. Is what it means.

[0003] The present invention also provides a printer, a copier, a facsimile having a communication system, and a printer for recording on a recording medium such as paper, thread, fiber, cloth, leather, metal, plastic, glass, wood, ceramics, and the like. The present invention is applicable to an apparatus such as a word processor having a section, and an industrial recording apparatus combined with various processing apparatuses.

[0004]

2. Description of the Related Art Conventionally, an ink jet type of a type in which a drive pulse is applied to an electrothermal transducer (recording element) to generate heat, and the heat causes the ink to foam to eject ink droplets onto a medium for recording. In the head, the driving pulse is shown in FIG.
The so-called single pulse drive in which one droplet is ejected by one pulse as shown in FIG. But,
In the case of such single-pulse drive, if continuous printing is performed at a high duty, the head temperature rises considerably and the ejection amount increases, which may cause deterioration in print quality.

For this reason, as disclosed in Japanese Patent Application Laid-Open Nos. 63-42871 and 2-74351, FIG.
The double pulse control that controls the ejection amount by dividing the driving pulse shown in (1) into two, a pre-pulse and a main pulse, and changing the pre-pulse width and the off-time between the pulses according to the head temperature is performed. .

On the other hand, when a single pulse is applied to an electrothermal transducer (heater) to cause the ink to foam,
As shown in FIG. 6, it is generally known that the threshold value Tth of the pulse width at which foaming occurs on the surface of the electrothermal conversion element decreases almost linearly with an increase in the head temperature.

In view of this, so-called Tth control has been considered in which the head temperature is monitored and the drive pulse width is narrowed down as the head temperature increases. However, if the accuracy of the head temperature sensor is not very good, the actual drive pulse width will deviate from the pulse width required to eject ink, causing unstable ejection or in the worst case no ejection There was a fear of doing. For this reason,
A margin is added to the pulse width to make the pulse width larger than the required width.

[0008]

However, recently, there is a further demand for higher resolution and higher throughput of the printer, so that the number of nozzles of the recording head and the ejection frequency have to be further increased. . But,
In order to increase the number of nozzles and increase the ejection frequency, the driving energy to the head per unit time increases, so that the temperature rising speed becomes much faster than before.

In the ink jet head, when the head temperature becomes higher than a certain temperature, bubbles easily accumulate in the flow path of the head, or the bubbles generated by driving the electrothermal transducer once do not disappear. Discharge failure may occur. For this reason, it is difficult to perform normal recording unless the head temperature is kept within a certain temperature. Therefore, when the recording head exceeds a certain temperature, a weight is inserted during recording so that the temperature of the recording head decreases,
It has been practiced to lower the print frequency or lower the print duty to suppress the temperature rise of the head. However, this eventually leads to a decrease in the throughput of the printer.

[0010]

A main structure of an ink jet recording apparatus according to the present invention for solving the above problems is a recording head having a recording element for discharging ink and a temperature detecting means for detecting a temperature. Pulse generating means for generating a pulse width of a signal to be applied to the recording element according to the head temperature, and driving means for driving the recording element of the recording head with the pulse width signal generated by the pulse generating means. The pulse generating means is means capable of generating a signal having a pulse width of a plurality of systems corresponding to the head temperature, and the pulse generating means generates the signal in accordance with the correction accuracy of the detection value of the temperature detecting element of the head. It consists of means for changing the system.

[0011] Alternatively, a temperature detecting means for detecting a head temperature, a driving pulse storing means for storing driving pulse waveform data corresponding to each head temperature range, and driving pulse waveform data from the driving pulse storing means depending on the head temperature. An ink jet recording apparatus comprising: a driving pulse generating means for reading and generating a driving pulse waveform; and a driving means for driving a head according to the driving pulse waveform from the driving pulse generating means. An ink jet recording apparatus is characterized in that a desired drive pulse recording means is selected according to the correction accuracy when correcting the temperature characteristics of the head temperature detecting means.

According to another aspect of the present invention, there is provided a method for driving an ink jet recording apparatus, comprising: a recording element for ejecting ink; and a temperature detecting means for detecting a temperature. A pulse width of a signal to be applied to the head according to a head temperature, and a driving method of an ink jet recording apparatus that drives a recording element of the recording head with the signal of the generated pulse width. The method can generate the signal having a pulse width of a system, and changes the system of the signal in accordance with the accuracy of correction of the detection value of the temperature detecting element of the head.

According to the present invention, the correction accuracy of the head temperature sensor is improved by switching the system (table) of the relationship between the head temperature and the drive pulse waveform according to the correction accuracy of the head temperature sensor. Accordingly, it is possible to suppress the drive energy to the head, to suppress the temperature rise of the head, and to suppress the decrease in throughput at the time of high duty printing.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiments) First, FIGS. 1, 2 and 3 show preferred ink jet units IJU and ink jet heads IJH to which the present invention is applied or applied.
FIG. 3 is an explanatory diagram of an ink jet cartridge IJC and an ink jet recording apparatus main body IJRA. Hereinafter, the configuration of each unit will be described with reference to these drawings.

The ink jet cartridge IJ in this embodiment
C, as can be seen from the perspective view of FIG. 2, shows that the ink jet head IJH and the ink tank IT are integrated, and the ink storage ratio is large. The ink jet cartridge IJC is a disposable type that is fixedly supported by a positioning means and electrical contacts of a carriage mounted on the ink jet recording apparatus main body IJRA, and is detachable from the carriage.

The ink jet unit IJU is a unit of a bubble jet system which performs recording using an electrothermal converter which generates thermal energy for causing film boiling to occur in ink according to an electric signal.

In FIG. 1, reference numeral 100 denotes an electrothermal transducer (discharge heater) arranged in a plurality of rows on a Si substrate, and electric wiring such as Al for supplying electric power to the electrothermal transducers formed by a film forming technique. This is a heater board (first base) composed of: A temperature sensor for detecting the temperature of the head is provided on the base.

Reference numeral 200 denotes a wiring board for the heater board 100.

Reference numeral 1300 denotes a groove provided with a partition (groove) for distinguishing a plurality of ink flow paths and a common liquid chamber for accommodating ink for supplying ink to each ink flow path (liquid flow path). Eject port 1 corresponding to each ink flow path with top plate
An orifice plate 400 having a plurality of 1s is integrally molded. Polysulfone resin is preferable as these integrally molded materials, but other molding resin materials may be used.

Reference numeral 300 denotes a support made of, for example, metal which supports the back surface of the wiring board 200 in a plane, and serves as a bottom plate of the ink jet unit. Reference numeral 500 denotes a pressing spring, which is a pressing portion agent. The pressing spring 500 has an M shape and presses the common liquid chamber at a center of the M shape with a light pressure. The area is pressed intensively with linear pressure. By pressing the heater board 100 and the top plate 1300 with the feet of the holding springs passing through the holes of the support 300 and engaging with the back side of the support 300, the two are engaged with each other in a state of sandwiching them. The heater board 100 and the top plate 1300 are crimped and fixed by the concentrated urging force of the spring 500 and the front droop 501.

The ink tank is a cartridge body 100
0 and the ink absorber 900
And a cover member 1100 for inserting the unit IJU from the side opposite to the unit IJU mounting surface and sealing the unit.

Reference numeral 1200 denotes a supply port for supplying ink to the unit IJU. Reference numeral 1401 denotes an atmosphere communication port provided in the lid member for communicating the inside of the cartridge with the atmosphere.

In this embodiment, the top plate 1300 is made of resin having excellent ink resistance, such as polysulfone, polyethersulfone, polyphenylene oxide, polypropylene, etc., and is integrally molded together with the orifice plate 400 in a mold. I have.

As described above, since the integrally molded parts are the ink supply member 600, the top plate and the orifice plate, and the ink tank body 1000, not only the assembling accuracy becomes high, but also the quality of mass production is extremely effective. It is. Further, since the number of parts is reduced as compared with the conventional case, excellent desired characteristics can be surely exhibited.

FIG. 3 is an external view of an ink jet recording apparatus IJRA to which the present invention is applied. The lead screw 5005 rotates through driving force transmission gears 5011 and 5009 in conjunction with forward and reverse rotations of a driving motor 5013. Groove 50
The carriage HC that engages with the pin 04 is a pin (not shown).
And is reciprocated in the directions of arrows a and b. Reference numeral 5002 denotes a paper pressing plate, which presses the paper against the platen 5000 in the carriage movement direction. 5007, 5008
Is a home position detecting means for confirming the presence of the carriage lever 5006 in this region with a photocoupler and switching the rotation direction of the motor 5013 and the like. 5016
Denotes a cap member 502 for capping the front surface of the recording head.
Reference numeral 5015 denotes a suction unit that suctions the inside of the cap, and performs suction recovery of the recording head through the opening 5023 in the cap. Reference numeral 5017 denotes a cleaning blade. Reference numeral 5019 denotes a member that allows the blade to move in the front-rear direction. These members are supported by a main body support plate 5018. It goes without saying that the blade is not limited to this form, and a well-known cleaning blade can be applied to this embodiment. Reference numeral 5012 denotes a lever for starting suction for recovery of suction. The lever 5012 moves with the movement of the cam 5020 that engages with the carriage, and the driving force from the drive motor is controlled by a known transmission means such as clutch switching. Is done.

The capping, cleaning, and suction recovery are configured so that desired operations can be performed at the corresponding positions by the action of the lead screw 5005 when the carriage comes to the home position side area. Any desired operation can be applied to this example. Each of the configurations described above is an excellent invention when viewed alone or in combination, and shows preferred configuration examples for the present invention.

The present apparatus has a drive signal supply means for driving the ink ejection pressure generating element.

FIG. 4 is an overall block diagram of the ink jet recording apparatus of the present invention. The heat pattern generator 3 is a circuit for generating a drive pulse waveform of the head, and is connected to the data output of the drive pulse table ROM 4. A plurality of driving pulse tables (systems of temperature and driving pulse waveform) are stored in advance in the driving pulse table ROM 4 constituting the pulse generating means, and each driving pulse table stores a driving pulse waveform according to each head temperature range. Because it is registered. The selection of the head temperature range is designated by a temperature range designation signal from the heat pattern generator 3 constituting the pulse generation means, and a drive pulse waveform corresponding to the current head temperature is usually selected. The temperature range designation signal is output so that the heat pattern generator 3 synchronizes with the printing timing based on the head temperature range number output from the CPU 5 constituting the pulse generating means.

Here, how the CPU 5 generates the head temperature range number will be described. A head temperature sensor 1 as a temperature detecting element for detecting a head temperature is provided in a bubble jet head 1 which is a recording head.
0 is arranged, and the output signal is
, And is digitized by the A / D converter 7 and taken into the CPU 5. When reading the head temperature, the CPU 5 compares the temperature with a temperature range table in the ROM 6 prepared in advance and connected to the CPU 5 to determine which temperature range is included, and sets a value corresponding to the temperature range as a head temperature range number as a heat temperature range number. Output to the pattern generator 3. Since a series of these processes are performed at intervals of several tens of ms during printing, a drive pulse corresponding to almost the current head temperature is generated, and the bubble jet head 1 is driven through the head driver 2.

On the other hand, which table is selected from a plurality of drive pulse tables written in the drive pulse table ROM 4 depends on a table designation signal output from the CPU 5. The table designation signal is output by the CPU 5 judging the correction accuracy at the time of offset correction for performing the accuracy correction of the head temperature sensor 10 arranged in the bubble jet head 1. In this embodiment, a diode sensor having the following characteristics is used as the head temperature sensor 10.

Vf = At + BA A = −4.5 ± 0.1 [mV / ° C.] B = 1150 ± 50 [mV] Therefore, the offset, that is, the variation of B is about ± 10.
If the variation is not corrected because the temperature is in ° C, the variation is directly reflected in the temperature detection accuracy.

Hereinafter, a method of correcting the offset of the head temperature sensor 10 will be described with reference to the flowcharts of FIGS.

The power of the printer is turned on (S100).
It is checked whether the bubble jet head 1 as a recording head is mounted (S101). If the mounting of the head 1 is recognized, first, the temperature indicated by the head temperature sensor 10 is set in the apparatus (in the machine) indicating the environmental temperature. The provisional value of the offset value B is determined as being equal to the temperature of the temperature sensor 9 (S102).

Since the in-machine temperature sensor 9 is arranged near the carriage on which the bubble jet head 1 of the printer (recording apparatus) is mounted, the head temperature is equal to the head temperature if the head 1 has been mounted on the carriage until now. Is considered to be output.

However, when the head stored in a different place from the apparatus is mounted on the apparatus, or when the power of the printer, which has been recorded so far, is once turned off and then turned on again, the head is initially set. There will be a difference between the temperature sensor value and the in-flight temperature sensor value. In addition, since a high-precision thermistor sensor is used as the in-machine temperature sensor 9, its output value can be considered to be almost accurate.

Next, it is checked whether there is a print command (S
l03) If there is a print command (S104), recording is performed and the print check is performed again. Here, if there is no print command, the elapsed time from the previous temperature correction processing is calculated, and if a certain time has elapsed (S10)
5) An offset correction process (S106) for estimating and correcting the temperature rise / fall characteristics of the sensor is executed.

In the offset correction processing, the temperature decrease characteristic (sometimes, the temperature increase characteristic) of the head temperature sensor 10 is measured, the ambient temperature is obtained by the in-machine temperature sensor 9, and the current head temperature is estimated based on the characteristic data measured in advance. To set the offset value B. This offset correction processing is expressed by the following equation.
The correction is performed at minute intervals, and the correction accuracy is improved as the number of times is increased. In particular, when printing is not performed, the head temperature becomes equal to the internal temperature in about 2 to 3 hours, so that the correction is completed and the offset value B is accurately determined.

Since the above-described offset processing is all executed by the CPU 5, the CPU 5 determines the correction accuracy by itself and, as described later, as a table designation signal for designating which table is to be selected from a plurality of tables. Can be output.

Next, the contents of the drive pulse table ROM 4 will be described. FIG. 8 is a memory map of the drive pulse table ROM4. Tables 1, 2, and 3 and pulse waveform information relating to the drive signals of each system are stored in order from the beginning of the address. In each table, the drive corresponding to each temperature range in ascending order of the head temperature range from the lowest address. The signal waveform is written.

The contents of the pattern of the driving pulse waveform will be described with reference to FIGS. FIGS. 9A and 9B are explanatory diagrams of the drive pulse waveform. FIG. 9A shows the pulse waveform at the time of single pulse drive, and FIG. 9B shows the pulse waveform at the time of double pulse drive. In the double pulse driving, T1 is defined as a pre-pulse width, T2 is defined as a pause interval, and T3 is defined as a main pulse width.

FIG. 7A is a graph of the pre-pulse width T1 with respect to the head temperature. The pre-pulse is gradually narrowed down to about 50 ° C., and the pre-pulse width = 0 at higher temperatures. Represents. The discharge amount at this time is shown in the graph (C), where the discharge amount is almost constant in the double pulse drive section, but it can be seen that the discharge amount gradually increases with the single pulse drive. In the legend of the graph (B), “fixed” indicates the conventional main pulse width T3 and Tth indicates the main pulse width T3 when the Tth control is performed. In the conventional case, assuming that the foaming threshold value at the time of single pulse driving at 25 ° C. is T (25), T3 is determined so that T1 + T3 == T (25) * k ² (1) over the entire temperature range. Is always constant. The constant k is a parameter that specifies a margin for stable ejection, and is empirically 1.05 to 1.30.
Is an appropriate value. On the other hand, when Tth control is performed, T3 is determined so that T1 + T3 = Tth * k ² (2). As shown in FIG. 6, Tth decreases as the head temperature increases, so that the total of the pulses also decreases, and it is possible to suppress the driving energy to the bubble jet head 1 when the head temperature rises. The characteristics of Tth in FIG. 5 are obtained under the condition of single pulse driving. However, as in the present embodiment, when the pause period T2 between the pre-pulse and the main pulse is in the range of 2 to 3 μS, two characteristics as shown in (Equation 2) are obtained. Even if it is considered to be the sum of the pulses, no problem occurs in the ejection performance.

However, if T2 is set to 5 μs or more, the cooling amount of heat generated by the pre-pulse cannot be ignored in the T2 section, and if T3 is not set to 3.0 μS or more, ejection failure may occur. In such a case, the double pulse drive without changing the T1 corresponding to the head temperature, the foam threshold t3 of the main pulse width of the time determined, if T3 = (T1 + t3) * k 2 -T1 T3 can be determined appropriately.

In this embodiment, the driving pulse table ROM 4
Table (system of head temperature and drive pulse waveform)
Are prepared, Table 1 is a conventional drive pulse table according to (Equation 1), and Table 3 is a table to which Tth is completely applied and is according to (Equation 2). Table 2 is an intermediate table between Tables 1 and 3, in which a main pulse width intermediate between the Tth main pulse width and the fixed main pulse width in FIG. 9B is written.

FIG. 10 shows a sequence for selecting one of the three tables according to the correction accuracy of the temperature detecting element of the head. As described with reference to FIG. 5, the power of the printer is turned on (S200).
It is determined whether or not the head has been mounted (S20).
1) When the mounting of the head is recognized, the provisional value of the offset of the temperature detecting element is determined assuming that the head temperature is equal to the internal temperature (S202).

Next, it is checked whether or not there is a print command (S203). If there is no print command, it is checked whether or not a predetermined time has elapsed since the previous correction processing (S205). If so, an offset process is performed (S206).

On the other hand, if there is no print command in step S203, the correction accuracy is determined. That is, it is determined whether the sensor correction has been completed (S20).
4) If it is determined that the correction is completed, the above-described table 3 is selected (S209). If the correction is not completed in step S204, the correction accuracy (level) of the sensor is determined (S209).
207), if it is equal to or more than the predetermined value, select Table 2 (S2
10) If not greater than the predetermined value, select table 1 (S)
208).

According to such a sequence, when the correction accuracy of the head temperature sensor 10 is low, the table 1 is selected, when the accuracy is improved to some extent, the table 2 is selected, and when the correction is finally completed, the table 3 is selected. Become.

After a table is selected according to the correction accuracy, a drive signal waveform corresponding to each head temperature is selected from each table by a sequence as shown in FIG.

That is, the power is on (S30).
0), when the head is being driven (S301), the head temperature is read from the temperature sensor of the head via the A / D converter (S303), and when the head has been read a predetermined number of times, the head temperature is calculated (S304). ), And selects a drive pulse waveform corresponding to the head temperature from the selected table (S305), and outputs drive signal waveform information (S306). The recording element of the head is driven by the driving unit based on this information.

As described above, in any case, no ejection failure or print deterioration occurs, and the head temperature sensor 10
When the correction is completed, the driving energy can be suppressed and the temperature rise of the head can be suppressed, so that optimum printing can be performed without lowering the throughput.

(Other Embodiments) In this embodiment, a diode sensor is used as the head temperature sensor 10 in the head to detect the head temperature. However, for example, a resistance sensor may be used. Further, in the present embodiment, the temperature is detected using the output value of the head temperature sensor 10, but the temperature may not be particularly dependent on the temperature sensor. For example, the temperature rise characteristic of the head with respect to the print duty and the temperature decrease characteristic with respect to the pause time under the environmental temperature are measured, and the print temperature and the pause time are obtained by the CPU to estimate the head temperature. No problem.

In this embodiment, the drive pulse width is controlled as means for reducing the head drive energy as the head temperature rises. However, the characteristics of the foaming threshold voltage of the head drive power supply with respect to the head temperature are measured. Needless to say, control can be performed even with the head drive voltage.

[0053]

According to the present invention, the following effects can be obtained.

(1) It is possible to improve the throughput.

(2) The heat radiation block can be omitted or reduced, and the head can be reduced in size and cost.

(3) Since the discharge efficiency is improved, power consumption can be reduced and the cost of the power supply can be reduced by reducing the capacity of the power supply.

(4) Since a rise in temperature can be suppressed as compared with before, the reputation of both the printer and the head can be improved.

(5) The running cost can be reduced because the consumption of ink can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an ink jet cartridge to which the present invention is applied.

FIG. 2 is a perspective view of an inkjet cartridge to which the present invention is applied.

FIG. 3 is a perspective view of an ink jet recording apparatus to which the present invention is applied.

FIG. 4 is an overall block diagram of the present invention.

FIG. 5 is a flowchart of offset correction of a head temperature sensor.

FIG. 6 shows a head temperature VS. It is a graph which shows the relationship of a foaming threshold value (Tth).

7A is a graph showing a correlation of a pre-pulse with respect to a head temperature, FIG. 7B is a graph showing a correlation of a main pulse with a head temperature, and FIG. 7C is a graph showing a correlation of a discharge amount variation at the time of Tth control. It is a graph shown.

FIG. 8 is a diagram showing an address map of a drive pulse table ROM.

FIG. 9 is a diagram showing a pulse waveform of a driving pulse.

FIG. 10 is a flowchart of offset correction of a head temperature sensor.

FIG. 11 is a diagram showing a sequence for selecting a pulse width waveform for each temperature.

[Explanation of symbols]

 Reference Signs List 1 bubble jet head 2 head driver 3 heat pattern generator 4 drive pulse table ROM 5 CPU 6 ROM 7 A / D converter 8 sensor amplifier 9 in-machine temperature sensor 10 head temperature sensor

Claims (13)

[Claims] 1. A pulse generator for generating a pulse width of a signal to be applied to a recording element of a recording head having a recording element for discharging ink and a temperature detecting means for detecting a temperature in accordance with the head temperature. Means, and driving means for driving a recording element of the recording head with a pulse width signal generated by the pulse generation means, wherein the pulse generation means has a plurality of pulse widths corresponding to head temperature. An ink jet recording apparatus comprising: means for generating a signal; and means for changing a system of the signal in accordance with a correction accuracy of a detection value of the temperature detection element of the head. 2. The apparatus according to claim 1, wherein said pulse generation means holds a table of said plurality of systems of data of a pulse width corresponding to a temperature of said recording head, and selects a predetermined pulse width from said table. The inkjet recording apparatus according to claim 1. 3. The ink jet recording apparatus according to claim 1, wherein said head temperature is a temperature obtained by correcting an output value of said recording head by a temperature detecting means. 4. The ink jet recording apparatus according to claim 1, wherein the pulse width of each system is a system represented by a calculation formula indicating a pulse width with respect to a head temperature. 5. A drive pulse storage means for storing temperature detection means for detecting a head temperature, drive pulse waveform data corresponding to each head temperature range, and drive pulse waveform data from the drive pulse storage means according to head temperature. An ink jet recording apparatus comprising: a driving pulse generating unit that reads out and generates a driving pulse waveform; and a driving unit that drives a head in accordance with the driving pulse waveform from the driving pulse generating unit. An ink jet recording apparatus wherein a desired driving pulse recording means is selected according to the correction accuracy when correcting the temperature characteristics of the head temperature detecting means. 6. A plurality of driving pulse storage units each including at least one driving pulse recording unit that stores driving pulse waveform data in which the driving energy of the head decreases as the head temperature increases. The inkjet recording apparatus according to claim 5, wherein: 7. A drive voltage reading means for reading out the drive voltage data from the drive voltage storage means according to the head temperature, a drive voltage storage means storing drive voltage data corresponding to each head temperature range, and a drive voltage detecting means for detecting the head temperature. An ink jet recording apparatus having a drive voltage generating means for generating a drive voltage, comprising a plurality of drive voltage storage means, and selecting a desired drive voltage storage means according to the degree of correction when correcting the temperature characteristic of the head temperature detecting means. Characteristic inkjet recording device. 8. The drive voltage storage device according to claim 1, wherein the drive voltage storage device includes at least one drive voltage storage device that stores drive voltage data in which the drive energy of the head decreases as the head temperature increases. The ink jet recording apparatus according to claim 7, wherein 9. The ink jet recording apparatus according to claim 5, wherein the temperature detecting means for detecting the temperature of the head is a diode sensor or a resistance sensor disposed in the head. 10. The ink jet recording apparatus according to claim 5, wherein the temperature detecting means for detecting the ink temperature is a temperature setting means for estimating a head temperature. 11. A recording head having a recording element for ejecting ink and a temperature detecting means for detecting temperature generates a pulse width of a signal to be applied to the recording element in accordance with the head temperature. A method of driving an ink jet recording apparatus that drives a recording element of the recording head with a signal of a generated pulse width, wherein the signal of a pulse width of a plurality of systems corresponding to a head temperature can be generated. A method of driving the ink jet recording apparatus, wherein the system of the signal is changed in accordance with the correction accuracy of the detection value of the temperature detecting element. 12. The signal system is changed by selecting a table from a plurality of tables of pulse width data held in the recording apparatus.
3. The method for driving an ink jet recording apparatus according to item 1. 13. A drive voltage reading unit that reads out drive voltage data from a drive voltage storage unit based on a head temperature, a drive voltage storage unit that stores drive voltage data corresponding to each head temperature range, and a drive voltage. In a method of driving an ink jet recording apparatus having a driving voltage generating means for generating a driving voltage, a plurality of driving voltage storing means are prepared, and a desired driving voltage recording means is selected according to a correction degree when correcting the temperature characteristic of the head temperature detecting means. A method for driving an ink jet recording apparatus.