JP2002225247A - Temperature protection method for recording head, and recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temperature protection method for a recording head capable of precisely executing reporting corresponding to the condition of the recording head, and a recording device. SOLUTION: The recording head 9 is provided with temperature detection elements 62 capable of detecting temperature of piezoelectric vibrators 36 arranged at each of them. A CPU 52 built in a printer 1 inputs a detected temperature from the temperature detection element 62 and judges whether the detected temperature is above a set temperature or not. When the detected temperature is above the set temperature, the CPU 52 judges the recording head 9 is higher than the specified value and executers a cleaning operation plural times (N times). After having executed the cleaning operation, the CPU 52 judges again whether the detected temperature is above the set temperature or not, and in the case the detected temperature still remains above the set temperature, the CPU 52 makes the display 68 of a personal computer 50 show a notice to make a service call. Meanwhile, when the detected temperature is lower than the set temperature after the cleaning operation, the CPU 52 judges that the recording head 9 restores from the high temperature condition and does not make the display 68 show the notice to make the service call.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording head temperature protection method and a recording apparatus.

[0002]

2. Description of the Related Art For example, in an ink jet recording apparatus (hereinafter, simply referred to as a printer) disclosed in Japanese Patent Application Laid-Open No. 9-201960, a driving voltage is applied to a piezoelectric vibrator provided in the recording head. Ink droplets are ejected from the nozzle openings to perform printing on paper.
By the way, during printing, the piezoelectric vibrator has heat when it is driven, and the heat may cause the recording head to rise to a temperature out of specifications. This also causes damage to the piezoelectric vibrator.

In order to solve this problem, when the recording head is heated to a temperature out of specifications, it is considered that a fatal problem (fetal error) has occurred in the printer, and for example, "service" is displayed on the display of the personal computer. Please contact the center ". That is, when the temperature of the recording head becomes out of specification, the user or the like is notified of the abnormality.

[0004]

However, an increase in the temperature of the recording head may cause clogging of the nozzle holes with ink. In other words, when the ink is ejected normally, the heat of the piezoelectric vibrator is taken away by the ejected ink, and the heat radiation effect suppresses the high temperature of the piezoelectric vibrator. This is because no effect occurs and the temperature of the piezoelectric vibrator rises. For this reason, when the temperature of the recording head rises beyond the specification, if the cleaning operation for forcibly sucking the ink from the nozzle holes by the suction pump is executed, the state may return from the high temperature state. Therefore, in the related art, there is a problem that a display to that effect is displayed even when it is not necessary to display a prompt for a service call. Further, in order to prevent a display for prompting a service call from being erroneously displayed, it is necessary to surely eliminate clogging of ink.

[0005] There are also printers of a stationary type. Since this type of model rarely moves the printer, it is unlikely that the ink surface (meniscus) will be destroyed due to vibration during movement. There is a situation in which the setting is not made so that the cleaning operation is performed even if it is changed. However, as described above, it is conceivable that the temperature of the recording head becomes high due to clogging of the ink. Therefore, even in this type of model, a countermeasure is required when a display for prompting a service call is performed.

[0006] Some printers share a drive source for a paper feed roller for feeding paper and a suction pump driven during a cleaning operation by the same motor. In this type of model, the paper is fed by rotating the motor in one direction, and the suction pump is driven by rotating the motor in the other direction. For this reason, when the cleaning operation is immediately performed when the temperature of the recording head is out of the specification, there is a problem that the paper is fed backward and a paper jam occurs.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to provide a recording head temperature protection method and a recording apparatus capable of accurately performing notification according to the state of the recording head. Is to do.

[0008]

According to a first aspect of the present invention, there is provided a method of protecting the temperature of a recording head used in a recording apparatus having a recording head for discharging ink. A temperature comparison is performed to determine whether the temperature of the head is equal to or higher than a set temperature. If the print head is equal to or higher than the set temperature, a suction process operation of forcibly sucking the nozzle holes of the print head is performed a plurality of times. After performing the processing operation, the temperature comparison is performed again, and when the temperature of the recording head is equal to or higher than the set temperature, a notification to that effect is performed by the first notification unit.

According to the present invention, when the temperature of the recording head is equal to or higher than the set temperature, the suction processing operation is performed a plurality of times, and thereafter, the temperature is compared, and if the temperature of the recording head remains high, the fact is notified. . Therefore, for example, the high temperature of the recording head may cause clogging of the nozzle hole.However, since the notification is performed after performing a plurality of suction processing operations, the clogging elimination effect is high, and The notification according to the state of the information can be accurately performed.

According to a second aspect of the present invention, in the method for protecting the temperature of a recording head used in a recording apparatus having a recording head for discharging ink, the recording apparatus includes a suction process for forcibly suctioning a nozzle hole of the recording head. A driving unit shared as a driving source between the suction unit driven when performing the operation and the paper feeding unit for feeding the recording paper, and determining whether the temperature of the recording head is equal to or higher than a set temperature. When the temperature of the recording head is equal to or higher than the set temperature, the paper feeding means is driven to execute a discharge process of the recording paper. After the discharge of the recording paper is completed, the suction process operation is performed. Is performed at least once, and the temperature comparison is performed again after performing the suction processing operation. If the temperature of the recording head is equal to or higher than the set temperature, a notification to that effect is given. And gist be executed by the first informing means.

According to the present invention, the driving means operates as a driving source for the paper feeding means when rotating in one direction, and operates as a driving source for the suction means when rotating in the other direction. When performing the suction processing operation, the suction processing operation is performed after the discharge of the sheet is completed, and then the temperature comparison is performed. If the recording head remains at a high temperature, the fact is notified. Thus, even if the driving source of the suction unit and the driving unit of the paper feeding unit are the same driving unit, the reverse feeding of the recording paper can be prevented and the notification according to the state of the recording head can be accurately performed. .

According to a third aspect of the present invention, in the second aspect, the suction processing operation is performed a plurality of times.

According to this invention, in addition to the operation of the invention described in claim 2, the suction processing operation is executed a plurality of times.
The effect of eliminating clogging can be improved.

According to a fourth aspect of the present invention, in the method for protecting the temperature of a recording head used in a recording apparatus having a recording head for discharging ink, the temperature of the recording head is compared with a set temperature to determine whether the temperature is equal to or higher than a set temperature. When the temperature of the recording head is equal to or higher than the set temperature, a suction process operation for forcibly sucking the nozzle holes of the print head is executed, and after the suction process operation, a process for comparing the temperatures is executed again. Until the temperature of the recording head after the suction processing operation becomes lower than the set temperature, the suction processing operation is performed at most a set number of times, the high temperature state is not restored at all, and the number of times of the suction processing operation is the set number of times. In the case described above, the gist is that the notification to that effect is executed by the first notification means.

According to the present invention, when the temperature of the recording head is equal to or higher than the set temperature, the suction processing operation is executed, and the temperature is compared for each suction processing operation so that the number of suction processing operations is equal to or more than the set number of times. Will be notified to that effect. Therefore, for example, despite the fact that the temperature of the recording head is lowered by one suction processing operation, there is no problem that the suction processing operation is uselessly performed, and the notification according to the state of the recording head is accurately performed. It becomes possible.

According to a fifth aspect of the present invention, in the method for protecting the temperature of a recording head used in a recording apparatus having a recording head for discharging ink, the temperature of the recording head is compared with a set temperature to determine whether the temperature is equal to or higher than a set temperature. If the recording head is at or above the set temperature, a suction process operation is performed to forcibly suction the nozzle holes of the recording head, and the number of times that the recording head becomes at or above the set temperature is counted by the temperature comparison. When the number of times is equal to or more than the set number of times, the gist is that the notification to that effect is executed by the first notification means.

According to this invention, when the temperature of the recording head is equal to or higher than the set temperature, the suction operation is performed, and the number of times the temperature of the recording head is equal to or higher than the set temperature is counted. Then, when the number of times becomes equal to or more than the set number of times, the fact is notified. Therefore, when the number of times the recording head becomes high temperature is equal to or more than the set number of times, there is a possibility that the recording head has an abnormality or the like. The notification according to the state of the head can be accurately performed.

According to a sixth aspect of the present invention, in the invention according to the fifth aspect, the notification is executed when the number of times the recording head reaches the set temperature or more becomes the set number of times or more within a set time. The gist of this is

According to this invention, in addition to the operation of the invention described in claim 5, the determination as to whether or not the temperature of the recording head is equal to or higher than the set number of times is performed within the set time.

According to the seventh aspect of the present invention, the first to sixth aspects are provided.
In the invention according to any one of the above, after the temperature comparison performed after the execution of the suction processing operation, the notification performed by the first notification unit is a notification that the communication of the abnormality of the recording head is performed. The gist is that there is.

According to the present invention, in addition to the operation of the invention according to any one of the first to sixth aspects, after the suction processing operation is performed, the notification of the abnormality of the recording head is executed by the first notification means. The operator is notified that the recording is to be performed, and the operator according to the notification notifies the service center or the like of the abnormality of the recording head.

In the invention described in claim 8, claims 1 to 7 are provided.
In the invention described in any one of the above, the recording head is provided with a temperature detecting unit for detecting a temperature of a printing driving unit built in the recording head, and the temperature is detected from the temperature detecting unit. The gist is that the temperature comparison is performed using the detected temperature and the set temperature.

According to this invention, in addition to the function of any one of the first to seventh aspects, the temperature of the print driving means incorporated in the recording head is detected by the temperature detecting means, and the temperature is detected. It is determined whether the temperature detected by the detecting means is equal to or higher than the set temperature.

According to a ninth aspect of the present invention, in the invention according to the eighth aspect, the print driving means is a piezoelectric vibrator, and the temperature detecting means is provided for each of the piezoelectric vibrators, When at least one of the detected temperatures is equal to or higher than the set temperature, the suction processing operation is executed.

According to this invention, in addition to the function of the invention described in claim 8, the temperature is detected for each piezoelectric vibrator by the temperature detecting means, and at least one of the temperature detecting means is equal to or higher than the set temperature. Is reached, the suction operation is performed.

According to the tenth aspect, in the first aspect,
9. In the invention according to any one of 9, when the suction processing operation is determined to be necessary by the temperature comparison,
The gist is that notification that the suction processing operation is to be performed is performed by the second notification unit, and the suction processing operation is performed by a manual operation of the operator based on the notification.

According to this invention, in addition to the effect of the invention described in any one of the first to ninth aspects, the second notification means is notified that the suction processing operation is to be performed.
Then, the suction processing operation is executed by an operator following the notification by, for example, a manual operation of operating a switch provided on a panel of the recording apparatus.

According to the eleventh aspect, in the tenth aspect,
In the invention described in the above, the recording device is configured to execute the suction processing operation when the power is turned on again, and the second notification means issues a notification that the power of the recording device is turned off and turned on again. The point is to do it.

According to this invention, in addition to the effect of the invention described in claim 10, the notification that the power of the recording apparatus is turned off and on is executed by the second notification means, and the power supply is restarted by the operator. The suction processing operation is performed by being inserted.

In the twelfth aspect of the present invention,
11. The invention according to any one of 11, wherein at least one of the first and second notification means is a display means for displaying a notification to be executed after the temperature comparison so as to be visually determined. Is the gist.

According to the present invention, in addition to the function of the invention described in any one of the first to eleventh aspects, the first and the second aspects are provided.
The notification executed after the temperature comparison is displayed on at least one of the notification means by the display means so that the operator can visually determine the notification.

[0032] In the invention according to claim 13, claims 1 to
13. The invention according to claim 12, wherein the first and second notification means are display means included in a host computer communicably connected to the recording device, and the notification is performed when the notification is executed. Is displayed on the display means on a screen.

According to this invention, in addition to the effect of the invention described in any one of the first to twelfth aspects, when the notification is executed, the notification to that effect is displayed on the display means of the host computer on the screen.

According to the present invention, a recording head for discharging ink, temperature detecting means for detecting the temperature inside the recording head, and a suction operation for forcibly suctioning a nozzle hole of the recording head. Suction means for performing
It is determined whether or not the detected temperature detected by the temperature detecting means is equal to or higher than a set temperature. If the temperature is equal to or higher than the set temperature, the suction means is operated to execute the suction processing operation a plurality of times. The gist is that a temperature comparison is performed again after the operation, and when the temperature detected by the temperature detection means is equal to or higher than the set temperature, a control means for causing the notification means to execute the notification is provided.

According to the present invention, the temperature inside the recording head for discharging ink is detected by the temperature detecting means. Further, a suction processing operation of forcibly sucking the nozzle holes of the recording head by the suction means is executed. Then, the control means determines whether or not the temperature detected by the temperature detection means is equal to or higher than the set temperature. If the temperature is equal to or higher than the set temperature, the control means activates the suction means to execute the suction processing operation a plurality of times. Then, after the suction process operation, the temperature comparison is performed again, and when the detected temperature is equal to or higher than the set temperature, the notification is performed by the notification unit. Therefore, for example, the increase in the temperature of the recording head may cause clogging of the nozzle holes.However, since the notification is performed after the suction processing operation is performed a plurality of times or more, the clogging elimination effect is high. Thus, it is possible to accurately perform the notification according to the state of the recording head.

According to a fifteenth aspect of the present invention, a recording head for discharging ink, temperature detecting means for detecting the temperature inside the recording head, and a suction operation for forcibly sucking a nozzle hole of the recording head. Suction means for performing
Paper feed means for feeding the recording paper, drive means shared and used as a drive source between the suction means and the paper feed means, and a temperature detected by the temperature detection means. It is determined whether or not the temperature is equal to or higher than the set temperature. If the temperature is equal to or higher than the set temperature, the paper feeding unit is driven to discharge the recording paper, and after the discharge of the recording paper is completed, the suction unit is operated. Activate and perform the suction processing operation at least once or more, perform the temperature comparison again after performing the suction processing operation, and if the detected temperature of the temperature detecting unit is equal to or higher than the set temperature, And a control means for notifying the notification means to the effect.

According to the present invention, the temperature inside the recording head for ejecting ink is detected by the temperature detecting means. Further, a suction processing operation for forcibly sucking the nozzle holes of the recording head is performed by the suction means, and the paper feeding of the recording paper is performed by the paper feeding means. The driving means is shared between the suction means and the paper feeding means. The control unit determines whether the detected temperature detected by the temperature detection unit is equal to or higher than the set temperature, and when the detected temperature is equal to or higher than the set temperature, the control unit drives the paper feeding unit to discharge the recording sheet. . After the discharge of the recording paper is completed, the suction unit is operated at least once by the control unit, and the suction processing operation is performed. Then, the control means determines again whether or not the detected temperature is equal to or higher than the set temperature. If the detected temperature is equal to or higher than the set temperature, the notifying means notifies the effect. Therefore, even if the driving sources of the suction unit and the paper feeding unit are the same as described above,
In addition to preventing the recording paper from being fed back, the notification according to the state of the recording head can be accurately performed.

According to the present invention, a recording head for discharging ink, temperature detecting means for detecting the temperature inside the recording head, and a suction operation for forcibly sucking the nozzle holes of the recording head. Suction means for performing
Determine whether the temperature detected by the temperature detecting means is equal to or higher than a set temperature, and when the temperature is equal to or higher than the set temperature, activate the suction means to execute the suction processing operation;
After the suction process operation, a process of performing temperature comparison is performed again.The suction process operation is performed at most a set number of times until the temperature detected by the temperature detecting unit after the suction process operation becomes lower than a set temperature. When the number of times of the suction processing operation is equal to or more than the set number without returning from the state even once, a control means for notifying the notification means is provided.

According to the present invention, the temperature inside the recording head for discharging ink is detected by the temperature detecting means. Further, a suction processing operation of forcibly sucking the nozzle holes of the recording head by the suction means is executed. Then, the control means determines whether or not the temperature detected by the temperature detecting means is equal to or higher than the set temperature. If the temperature is equal to or higher than the set temperature, the control means activates the suction means to execute a suction processing operation. Then, the suction processing operation is executed at most a set number of times by the control means until the temperature detected by the temperature detection means after the suction processing operation becomes lower than the set temperature.
If the number of times of the suction processing operation is equal to or more than the set number without returning from the high temperature state even once, this is reported by the reporting means. That is, when the temperature of the recording head is equal to or higher than the set temperature, the suction processing operation is performed, and the temperature comparison is performed for each single suction processing operation. Is done. Therefore, for example, despite the fact that the temperature of the recording head is lowered by one suction processing operation, there is no problem that the suction processing operation is uselessly performed, and the notification according to the state of the recording head is accurately performed. It becomes possible.

According to the seventeenth aspect of the present invention, a recording head for discharging ink, temperature detecting means for detecting the temperature inside the recording head, and a suction operation for forcibly suctioning a nozzle hole of the recording head. Suction means for performing
Determine whether the temperature detected by the temperature detecting means is equal to or higher than a set temperature, and when the temperature is equal to or higher than the set temperature, activate the suction means to execute the suction processing operation;
Control means for counting the number of times the temperature detected by the temperature detecting means after the suction processing operation is equal to or higher than the set temperature, and when the number is equal to or more than the set number, notifying the notification means to that effect. The gist is that it is provided.

According to the present invention, the temperature inside the recording head for discharging ink is detected by the temperature detecting means. Further, a suction processing operation of forcibly sucking the nozzle holes of the recording head by the suction means is executed. Then, the control means determines whether or not the temperature detected by the temperature detecting means is equal to or higher than the set temperature. If the temperature is equal to or higher than the set temperature, the control means activates the suction means to execute a suction processing operation. The number of times that the temperature of the recording head becomes equal to or higher than the set temperature is counted by the control means. Therefore, when the number of times the recording head becomes high temperature is equal to or more than the set number of times, there is a possibility that the recording head has an abnormality or the like. The notification according to the state of the head can be accurately performed.

[0042]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of an ink jet recording apparatus embodying the present invention will be described below with reference to FIGS.

FIG. 2 is a perspective view showing a schematic configuration inside the case of the ink jet recording apparatus. As shown in FIG. 1, an ink jet recording apparatus (hereinafter simply referred to as a printer) 1 includes a printer main body 2 inside a case (not shown). A carriage 5 which is guided by a carriage shaft 3 and can reciprocate along the axial direction of a platen 4 is attached to the printer main body 2, and the carriage 5 is driven by a carriage motor 6 via a timing belt 7. A recording head 9 is provided on the lower surface of the carriage 5 facing the recording paper 8, and ink cartridges 10 and 11 (black and color ink cartridges) 11 for supplying ink to the recording head 9 are provided above the carriage 5. Type) is detachably mounted. Further, the printer main body 2 is provided with a paper feed motor 12 as a driving means for feeding the recording paper 8 and discharging the paper 8 to the outside of the printer 1.

At the end (home position) of the carriage 5 in the moving direction, a cap 14 capable of sealing the nozzle hole 13 (see FIG. 5) of the recording head 9 is provided. The cap 14 has a pump tube 16 (see FIG. 4) as a suction means for suctioning the internal space to a negative pressure when the nozzle hole 13 is sealed by the cap 14.
Connected through. In addition, a wiping member 17 made of an elastic plate or the like such as rubber is provided on the movement path of the recording head 9 between the printing area of the recording head 9 and the home position. The wiping member 17 includes the carriage 5
Functions as a wiper for wiping the nozzle plate 18 of the recording head 9 when reciprocating to the cap 14 side.

FIG. 3 is a perspective view showing a schematic configuration of the paper feed mechanism. The paper feed motor 12 is provided with a pinion 20 at one end of a motor shaft 12a. On the other hand, one end of a paper feed roller 21 as a paper feed means is provided with a paper feed motor 1.
A large gear 22 meshing with the second pinion 20 is provided, and the paper feed roller 21 is driven to rotate by a driving force from the paper feed motor 12 being transmitted through the large gear 22.
At a position facing the paper feed roller 21, a plurality of paper feed driven rollers 23 that can rotate together with the paper feed roller 21 at the time of paper feed are provided in the axial direction of the paper feed roller 21. The driven roller 23 is rotatably supported by each holder 23a attached and fixed at a predetermined position.

A plurality of paper discharge rollers 25 are arranged on the paper discharge roller drive shaft 24 in a direction parallel to the axial direction of the paper feed roller 21. A discharge gear 26 is provided at one end of the discharge roller drive shaft 24, and the discharge gear 26 is an intermediate gear 2.
7, and is connected to the large gear 22. Therefore, the paper discharge roller 25 is driven by the paper feed motor 12 with the driving force of the large gear 2.
The rotation is driven by being transmitted through the second gear 2 and the intermediate gear 27. At a position facing each of the paper discharge rollers 25, a serrated roller 28, which can rotate together with the paper discharge roller 25 during paper feeding (paper discharge), is disposed so as to form a pair with the paper discharge roller 25. Each toothed roller 28 is rotatably supported by a support shaft 28a attached and fixed at a predetermined position. Therefore, the paper feed and discharge of the recording paper 8 is executed by the paper feed roller 21 and the paper discharge roller 25 being rotationally driven by the paper feed motor 12 via the gear mechanism.

FIG. 4 is a main configuration diagram of the suction pump.
By the way, the suction pump 15 uses the paper feed motor 12 (both shown in FIG. 3) as a drive source similarly to the paper feed roller 21 and the like, and functions as a drive source for the paper feed roller 21 and the paper discharge roller 25 when the motor rotates forward. On the other hand, at the time of reverse rotation of the motor, it functions as a drive source of the suction pump 15. Hereinafter, the structure of the suction pump 15 will be described in detail. As shown in FIG.
Reference numeral 5 denotes a casing 30 for accommodating the pump tube 16 in a guided state, a pump wheel 31 rotatable in the direction of arrow A in FIG. And two rollers 32, 32 rotatable along the axis.

In the pump wheel 31, guide grooves 33 are formed at positions opposed to the rollers 32 and extend in substantially the same direction as the rotation direction of the wheel 31. Each guide groove 33 allows the roller 32 to move away from the center O of the pump wheel 31 when rotating in one direction (during reverse rotation of the paper feed motor), and rotates the wheel 31 in another direction (when rotating the paper 31 in the other direction). The groove shape is such that the roller 32 can approach the center O of the wheel 31 during forward rotation of the feed motor). Therefore, when the paper feed motor 12 rotates in the reverse direction,
The movement of the roller 32 accompanying the rotation of the pump wheel 31 causes the pump tube 16 to have an ironing action to operate the suction pump 15. On the other hand, when the paper feed motor 12 is rotating forward,
The squeezing action of the roller 32 stops working, the pump tube 16 is released, and the operation of the suction pump 15 stops. The waste liquid in the pump tube 16 is absorbed by the waste liquid absorbing material 35 (both refer to FIG. 1) in the waste liquid tray 34.

FIG. 5 is a sectional view of a main part of the recording head.
The recording head 9 includes a case 37 for accommodating a plurality of piezoelectric vibrators (piezos) 36 as a print driving unit, and a flow path unit 38 is attached and fixed below the case 37. Each piezoelectric vibrator 36 is attached and fixed to a fixed substrate 37a on the inner surface of the case 37, and the flexible cable 3
9 through an ink nozzle switching semiconductor device (FIG. 1).
Reference 40). The channel unit 38 is formed by stacking the elastic sheet 41, the channel forming plate 42, and the nozzle plate 18 in this order from the case 37 side. A plurality of nozzle holes 13 are formed in the nozzle plate 18 (only one is shown in the figure), and are arranged so as to form a predetermined nozzle row (nozzle group) for each ink color.

A pressure chamber 43 is formed in the channel forming plate 42 for each nozzle hole 13. A piezoelectric vibrator 36 is attached and fixed to the elastic sheet 41 at a position facing the pressure chamber 43, and the pressure chamber 43 contracts and expands based on flexural vibration when the piezoelectric vibrator 36 is driven. Also, the flow path forming plate 42
A common ink chamber 44 for supplying ink to each of the pressure chambers 43 filled with ink of the same color is formed, and the common ink chamber 44 and the pressure chamber 43 are communicated via an ink supply path 45. Each common ink chamber 44 is connected to each of the ink cartridges 10 and 11 via an ink tube (not shown). Therefore, when the piezoelectric vibrator 36 bends at the time of charging and the pressure chamber 43 contracts, ink in the pressure chamber 43 is ejected from the nozzle hole 13. On the other hand, when the piezoelectric vibrator 36 is discharged to return to the original state and the pressure chamber 43 expands, ink is supplied to the pressure chamber 43 from the common ink chamber 44 and ink is supplied for the next printing. .

Normally, the printer 1 is provided with various maintenance functions such as a cleaning operation, a flushing operation, and a micro-vibration in order to eliminate the deterioration of print image quality. Here, the cleaning operation means that when the nozzle hole 13 is sealed, the internal space of the cap 14 is set to a negative pressure by the suction pump 15 to forcibly suction and discharge the ink in the nozzle hole 13, and wiping after the suction and discharge. This is a process of wiping the nozzle plate 18 by the member 17. This cleaning operation eliminates clogging of the nozzle holes 13 of the recording head 9, entry of air bubbles into the nozzle holes 13, and adhesion of dust near the nozzle holes 13.
The cleaning operation is automatically performed when the power of the printer 1 is turned on when a predetermined time (e.g., two to three days) has elapsed since the last cleaning operation. This is performed when the execution button is selected on the screen of FIG. 1 (see FIG. 1).

The flushing operation means that the recording head 9
Is a process of applying a drive signal unrelated to printing to eject ink droplets at a predetermined flushing position. This flushing operation is performed at regular intervals (for example, about 1 cycle) for the purpose of eliminating clogging of the nozzle holes 13 that emit a small amount of ink droplets during printing.
Once every 2 seconds). The flushing operation is
It is also performed for the purpose of recovering irregular meniscus near the nozzle hole 13 which may be generated by wiping at the time of the cleaning operation, and discharging and discharging the mixed color ink flowing backward from the nozzle hole 13. On the other hand, the micro-vibration is a process of applying a minute drive signal to the piezoelectric vibrator 36 to the extent that ink droplets are not ejected, so that the meniscus of the ink is micro-vibrated to agitate the ink in the recording head 9. is there. This fine vibration is performed for each pass of the recording head 9 for the purpose of eliminating ink clogging during printing.

FIG. 1 is a schematic configuration diagram of a printer and a personal computer. The printer 1 has a built-in controller 51 including a control board mounted in the printer 1.
The controller 51 includes a CPU 52 as a control unit,
OM53, RAM54, EPROM55, control IC5
6 is provided. These members 52 to 56 are connected to the main bus 5
The CPU 52 drives and controls the control IC 56 using the RAM 54 and the EPROM 55 as a work area according to various control programs stored in the ROM 53. The printer 1 is provided with a power switch 58 as a power supply for turning on and off the power supply to the apparatus.

The main bus 57 of the controller 51 is connected to a computer (personal computer body) 59 of a personal computer (hereinafter simply referred to as a personal computer) 50 as a host computer. The control IC 56 is controlled based on the data related to the maintenance. The control IC 56 controls the piezoelectric vibrators 36, the carriage motor 6, and the paper feed motor 1 based on the data from the CPU 52.
2 and so on.

A switching semiconductor element for driving an ink nozzle (hereinafter, simply referred to as a switching semiconductor element) 40
The recording head 9 includes a plurality of components each composed of one chip. The switching semiconductor elements 40 are arranged for each nozzle group of each ink color, and in this example, four chips are incorporated for black ink and three color inks. Each switching semiconductor element 40 includes a piezoelectric vibrator 3
6, a plurality of switch circuits 60 for driving
The switch circuit 60 is provided for each piezoelectric vibrator 36. In FIG. 1, the switching semiconductor element 40
Only one switch circuit 60 is shown in FIG.

The control IC 56 outputs an on / off signal and a waveform signal to the switch circuit 60 via two signal lines. The on / off signal is a signal output to the piezoelectric vibrator 36 for discharging the ink droplet to determine the timing of discharging the ink droplet, and the waveform signal is a signal output to determine the size of the ink droplet to be discharged. Where both signals are digital signals. The recording head 9 is provided with a bidirectional D / A converter 61 on the output side of the waveform signal from the control IC 56.
The signal is converted into a substantially sinusoidal trapezoidal wave signal (voltage signal) by the converter 61 and output to the switch circuit 60.

The switch circuit 60 controls the bidirectional D / A converter 61 based on the two signals transmitted from the control IC 56 at the ink droplet ejection timing according to the on / off signal.
Is applied to the piezoelectric vibrator 36. As a result, the piezoelectric vibrator 36 expands according to the value of the voltage signal, and ink droplets are ejected from the nozzle holes 13 at a predetermined timing to execute printing.

The switching semiconductor element 40 is provided with a temperature detecting element 62 as a temperature detecting means so as to form a pair with a switch circuit 60 for driving each piezoelectric vibrator 36.
This temperature detecting element 62 is arranged on the same substrate as the switch circuit 60. The temperature detecting element 62 is a temperature of the head transmission gate (hereinafter, simply referred to as a TG temperature).
T1 can be detected, and the detection signal is output to the control IC 56. The detection of the TG temperature T1 is synchronized with the execution interval of the flushing operation, and the temperature detection is executed once every about 12 seconds. The rise in the TG temperature T1 includes, for example, heat generation of the piezoelectric vibrator 36 due to clogging of the nozzle hole 13. In FIG. 1, only one temperature detecting element 62 is shown in FIG.

The structure of the temperature detecting element 62 employs, for example, the structure shown in FIG. As shown in FIG. 6, four diodes 66 are connected in series between the constant current source 65 and GND. The temperature detecting element 62 is connected to an output terminal 67 connected to the anode of the diode 66a located closest to the constant current source 65 among the four diodes 66.
A voltage value corresponding to the TG temperature is output as an analog signal. As shown in FIG. 1, the output side of the temperature detection element 62 is connected to a bidirectional D / A converter 61, and the detection signal output from the temperature detection element 62 has a voltage value of an analog signal. The signal is converted into a digital signal by the A converter 61 and output to the control IC 56.

The CPU 52 determines the TG based on the detection signal from the temperature detecting element 62 input through the control IC 56.
It is determined whether the temperature T1 is equal to or higher than a predetermined set temperature To (T1 ≧ To). The set temperature To is a specification limit temperature of the piezoelectric vibrator 36, and is, for example, a value (approximately 100 degrees) at which the recording head 9 can be considered to be out of specification at high temperature. Further, the set temperature To is not limited to 100 degrees, but ±
It can be set within the range of 20 degrees. When T1 ≧ To is satisfied, the CPU 52 determines whether or not the cleaning operation is being performed.
The head hot flag and the cleaning request flag are set (on) in the ROM 55.

Next, the CPU 52 urges the user to turn off the power switch 58 on the display 68 of the personal computer 50 and instructs the power to be turned on again after the power is turned off in order to cause the user to execute the cleaning operation. At this time CP
U52 drives the paper feed motor 12 in the forward direction with the power-off signal as a trigger to perform a paper discharge operation. After the paper discharging operation, when the power is turned on again, the CPU
Reference numeral 52 executes a cleaning operation a plurality of N times (for example, two to three times) based on a cleaning request flag set in the EPROM 55.

After performing the cleaning operation, the CPU 52
It is determined again whether 1 ≧ To is satisfied. And T
If 1 ≧ To is not satisfied, it is determined that the clogging has been eliminated by the N cleaning operations, the heat generated in the piezoelectric vibrator 36 has been radiated, and the temperature rise of the recording head 9 has been eliminated, and printing is restarted. Display 6 to notify execution
8 on.

On the other hand, if T1 ≧ To is satisfied even after performing the cleaning operation N times, the CPU 52
2 judges that a fatal problem (fatal error) has occurred on the recording head 9. And the CPU 52
A service call is prompted on the display 68 of the personal computer 50 based on the head hot flag set in the EPROM 55. Here, the service call means that the user contacts a service center or the like.

On the other hand, when T1 ≧ To is satisfied at the time of the first determination as to whether or not T1 ≧ To is satisfied and the cleaning operation is being executed, the CPU 52 sets the EPROM 55
Set the head hot flag to the set state (ON state). At this time, the CPU 52 determines that a fatal error has occurred in the recording head 9, and forcibly ends the cleaning operation. Then, the CPU 52 executes the personal computer 50 based on the head hot flag set in the EPROM 55.
Prompts a service call on the display 68, and causes the user to contact a service center or the like. Note that the display 68 corresponds to a first notification unit, a second notification unit, a notification unit, and a display unit.

Next, the procedure of processing (head hot processing) executed by the CPU 52 when the temperature of the recording head 9 rises is shown in FIG.
This will be described according to the flowchart of FIG.

In step (hereinafter simply referred to as S) 110, TG temperature T1 is input. That is, the piezoelectric vibrator 36
The TG temperature T1 is detected at intervals of about 12 seconds, based on the detection signal from the temperature detection element 62 provided for each of them.

In S120, it is determined whether or not T1 ≧ To is satisfied. That is, it is determined whether the TG temperature T1 is equal to or higher than the predetermined set temperature To (about 100 degrees). Where T
If 1 ≧ To is satisfied, it is determined that the recording head 9 is out of specification and the temperature is high, and the process proceeds to S130. If T1 ≧ To is not satisfied, the process returns to S110 again to detect T1.

In S130, it is determined whether or not the cleaning operation is being performed. That is, when it is determined that the temperature of the recording head 9 is out of the specification, it is determined whether or not the cleaning operation is being performed. If the cleaning operation is not being performed, the process proceeds to S140. If the cleaning operation is being performed, the process proceeds to S220.

At S140, the home position (HP)
Execute the move process. That is, the printing operation being executed is forcibly stopped, and the carriage motor 6 is driven so that the carriage 5 is located at the home position, so that the HP moving process is executed.

In S150, the head hot flag is set. That is, the head hot flag is set in the EPROM 55.

In S160, the cleaning request flag is set. That is, the cleaning request flag is set in the EPROM 55.

In step S170, a notification to prompt the user to turn off the power switch 58 is displayed on the display 68 of the personal computer 50. As a result, the user according to the display on the display 68 allows the power switch 58 of the printer 1 to be turned on.
Is turned off.

At S180, a paper discharge process for discharging the recording paper 8 is executed. That is, the paper feed motor 12 is driven so that the recording paper 8 is discharged from the printer 1 by using the OFF signal of the power switch 58 as a trigger, and the paper discharge processing is executed.

In S190, a notification to the effect of urging the user to turn on the power switch 58 is displayed on the display 68 of the personal computer 50. As a result, the user according to the display on the display 68 allows the power switch 58 of the printer 1 to be turned on.
Is turned on.

In S200, the cleaning process is executed N times. That is, when the power switch 58 is turned on,
The cleaning process is performed N times (for example, two to three times) based on the cleaning request flag. At this time, by driving the paper feed motor 12 in the reverse direction, the suction pump 15
Is activated, and the nozzle hole 1 sealed with the cap 14 is operated.
3 is forcibly sucked by the suction pump 15 and the cleaning operation is performed.

In S210, it is determined whether or not T1 ≧ To is satisfied. That is, after the cleaning operation, T
The G temperature T1 is input again, and it is determined whether the temperature T1 is equal to or higher than a predetermined set temperature To (for example, about 100 degrees).
If T1 ≧ To is satisfied, it is determined that some fatal failure (a fatal error) has occurred in the recording head 9, and the process proceeds to S240. If T1 ≧ To is not satisfied, it is determined that the clogging has been eliminated by the previous cleaning operation and the high temperature state of the recording head 9 has been eliminated, and this routine ends.

On the other hand, if it is determined in S130 that the cleaning operation is being performed, the cleaning operation is forcibly terminated in S220. That is, when the reverse rotation drive of the paper feed motor 12 is stopped, the suction pump 15 being driven is stopped, and the cleaning operation is forcibly terminated.

At S230, the head hot flag is set. That is, the head hot flag is set in the EPROM 55.

At S240, a notification for prompting a service call is displayed on display 68 of personal computer 50. That is, "contact service center"
Is displayed on the display 68 to urge the user to make a service call and to request maintenance of the recording head 9.

Therefore, in this embodiment, the following effects can be obtained.

(1) In the head hot processing of this embodiment, TG
When the temperature T1 is equal to or higher than the set temperature To and it is determined that the recording head 9 is out of the specification, the cleaning operation is performed N times, and after the cleaning operation, the TG temperature T1 is compared with the set temperature To again. . If the high-temperature state of the recording head 9 has not been eliminated even after performing the cleaning operation N times, it is determined that a fatal error has occurred in the recording head 9 and a display is displayed on the display 68 to prompt a service call. . Therefore, when the temperature of the recording head 9 becomes high due to clogging of the ink, a problem of prompting a service call does not occur, and an erroneous display of a prompt prompting a service call is prevented. it can. In addition, since the cleaning operation is performed a plurality of N times, the effect of eliminating ink clogging can be further improved.

(2) The cleaning operation performed when the recording head 9 is out of the specification at a high temperature is performed after the recording sheet 8 is discharged by using the OFF signal of the power switch 58 as a trigger. Therefore, even in the printer 1 in which the paper feed motor 12 is shared by the paper feed roller 21 and the suction pump 15 as in the present example, the cleaning operation is performed after the paper discharge processing is performed. Does not occur, and a problem (jam) that the recording paper 8 is messed up can be prevented.

(3) In a printer of a type in which the main body is set at a predetermined position, the meniscus can not be discarded, but the temperature of the recording head may be increased due to ink clogging. Therefore, if the head hot processing of this example is adopted for a printer of a stationary body type, even this type of printer can prevent erroneous display of a notification to prompt a service call.

The embodiment is not limited to the above, and may be changed to, for example, the following mode.

The head hot processing is not limited to the temperature comparison between T1 and To after performing the cleaning operation N times, but the temperature comparison is performed each time the cleaning operation is performed once. If the number of times is equal to or more than (P times (for example, 2 to 3 times)), a notification that prompts a service call may be provided. The head hot processing performed in this case will be described below with reference to the flowchart shown in FIG. This figure is a modification of a part of the flowchart shown in FIG. 7 described in the first embodiment, and the description of the same parts is omitted.
Only different parts will be described.

After performing the cleaning operation in S200,
In S310, the number of executions of the cleaning operation is counted. Next, in S210, it is determined whether or not T1 ≧ To is satisfied. When T1 ≧ To is satisfied, the process proceeds to S320. S
At 320, it is determined whether the number of cleaning operations performed is P times. If it has not been recovered from the high temperature state and has been performed P times, the process proceeds to S240 to notify that a service call is prompted, and if less than P times, it is S2.
Returning to 00, the cleaning operation is performed. This allows
It is possible to prevent a problem that the cleaning operation is performed unnecessarily even though the temperature of the recording head 9 is lowered.

The head hot processing is not limited to comparing the temperatures of T1 and To after executing the cleaning operation N times, but also measuring the number of times the recording head 9 becomes hot and setting the number of times to the set number (R times (R For example, when the number of times is equal to or more than two times)), a notification to prompt a service call may be provided. The head hot processing performed in this case will be described below with reference to the flowchart shown in FIG. This figure is a modification of a part of the flowchart shown in FIG. 7 described in the first embodiment, and a description of the same parts will be omitted, and only different parts will be described.

In S120, it is determined whether or not T1 ≧ To is satisfied. If T1 ≧ To is satisfied, the process proceeds to S330.
In S330, the number of out-of-specification temperature detections is counted. That is, during the set time (for example, 2 to 3 hours), the TG
The number of times that the temperature T1 becomes equal to or higher than the set temperature To is counted. Next, in S340, it is determined whether or not the number counted in S330 is R or more. If not, the process proceeds to S130, and if it is R or more, the process proceeds to S240 and a service call is notified.

If the cause of the high temperature of the recording head 9 is clogging of the ink, the high temperature is eliminated by the cleaning operation. However, if the failure of the piezoelectric vibrator 36 causes the high temperature, for example, It is also conceivable that the temperature of the recording head 9 rises again even after the elimination of the change. That is, when the temperature of the recording head 9 rises many times during the predetermined time, a fatal error may have occurred in the recording head 9. However, even in such a case, the notification that prompts the service call is executed.
The notification to that effect can be implemented accurately.

The printer 1 is not limited to a model in which the paper feed motor 12 is shared by the suction pump 15 and the paper feed roller 21. For example, the suction pump 15 and the paper feed roller 21 each have a drive motor. Is also good. In this case, the cleaning operation may be performed only once. Similarly, in this case, when the temperature of the recording head 9 becomes out of specification, the printing may be temporarily interrupted to perform the cleaning operation, and thereafter, the printing may be resumed from the point of interruption.

When the temperature of the recording head rises beyond the specification, the cleaning operation may be automatically performed when T1 becomes To abnormal instead of prompting the printer 1 to be turned on again.

The notification that prompts for a service call is not limited to the display on the display 68 of the personal computer 50. For example, a display lamp for prompting a service call to the printer 1 may be provided, and the display lamp may blink so as to prompt the user for a service call. The notification to prompt the service call and the notification to prompt the cleaning operation are not limited to the visual display, and an alarm may be sounded by a speaker of the personal computer 50, for example.

The notification for prompting the service call and the notification for prompting the cleaning operation are not necessarily performed using the same notification means (display 68 in this example). For example, the notification to prompt the service call may be performed on the display 68 of the personal computer 50, and the notification for prompting the cleaning operation may be performed by a separate member, such as by a display lamp provided in the printer 1.

It is not necessary to provide a temperature detecting element for each piezoelectric vibrator 36. For example, each switching semiconductor element 4
One chip may be provided for each 0 chip.

The temperature detecting element is not limited to measuring the temperature of the piezoelectric vibrator, and it is sufficient that the temperature detecting element can detect a high temperature outside the specification of the recording head.

The temperature protection method of the recording head of this embodiment is as follows.
The invention is not limited to the ink jet type printer, but can be adopted for any type of printer.

The technical ideas other than the claims that can be grasped from the embodiment and the other examples will be described below together with their effects.

(1) In a method for protecting the temperature of a printhead used in a printing apparatus having a printhead for discharging ink, a procedure for detecting the temperature inside the printhead (S
110), a step (S120) of determining whether or not the detected temperature of the recording head is equal to or higher than a set temperature, and forcing the nozzle holes of the recording head when it is determined that the detected temperature is equal to or higher than the set temperature. A procedure (S140 to S200) for executing the suction processing operation for suctioning at least once or more, and a procedure for determining whether or not the temperature inside the recording head detected again after the execution of the suction processing operation is equal to or higher than a set temperature (S140).
210), and a step (S240) of informing when the detected temperature is equal to or higher than the set temperature (S240).

(2) In a method of protecting the temperature of a print head used in a printing apparatus having a print head for discharging ink, a procedure for detecting the temperature inside the print head (S
110), a step of determining whether or not the detected temperature of the recording head is equal to or higher than a set temperature (S120), a step of discharging the recording sheet outside the recording apparatus (S170), and When it is determined that this is the case, after the discharge of the recording paper is completed, a suction processing operation for forcibly suctioning the nozzle holes of the recording head is performed at least once (S140 to S200), and the suction processing operation is performed. A procedure (S210) for determining whether or not the temperature inside the recording head detected again after the execution is equal to or higher than a set temperature, and a procedure for notifying that the detected temperature is higher than the set temperature (S240). ).

(3) In the technical concept (1) or (2), the method for protecting the temperature of the recording head includes a step (S310) of counting the number of the suction processing operations and a setting of the number of the suction processing operations. Procedure for judging whether or not the number is equal to or more than (S3
20) and a procedure (S240) for notifying the user when the number of times of the forced suction operation is equal to or more than a set number.

(4) In the above technical ideas (1) to (3), the method for protecting the recording head temperature includes a step of counting the number of times the detected temperature of the recording head reaches the set temperature (S330).
And a step (S240) of notifying when the number of times the detected temperature reaches the set temperature is equal to or more than the set number.

(5) In the fourteenth aspect, the control means causes the notification means to execute the notification by using the recording head temperature protection method according to any one of the seventh to thirteenth aspects.

(6) In claim 15, the control means uses the recording head temperature protection method according to any one of claims 3 to 13 to provide notification by the notification means. Let it run.

(7) In claim 16, the control means causes the notification means to execute the notification by using the print head temperature protection method according to any one of claims 7 to 13.

(8) In the seventeenth aspect, the control means causes the notification means to execute the notification by using the recording head temperature protection method according to any one of the sixth to thirteenth aspects.

[0106]

As described above in detail, according to the present invention, it is possible to accurately perform notification according to the state of the recording head.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a printer and a personal computer according to an embodiment.

FIG. 2 is a perspective view showing a schematic configuration inside a case of the printer.

FIG. 3 is a perspective view illustrating a schematic configuration of a paper feeding mechanism.

FIG. 4 is a main configuration diagram of a suction pump.

FIG. 5 is a sectional view of a main part of the recording head.

FIG. 6 is a configuration diagram of a temperature detection element.

FIG. 7 is a flowchart for executing a head hot process.

FIG. 8 is a flowchart for executing a head hot process in another example.

FIG. 9 is a flowchart for executing a head hot process in another example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Printer as a recording device 8 Recording paper 9 Recording head 12 Paper feed motor as a drive means 13 Nozzle hole 15 Suction pump as a suction means 21 Paper feed roller as a paper feed means 36 Piezoelectric vibrator (piezo as print drive means) 50) a personal computer as a host computer 52 a CPU as a control means 58 a power switch as a power supply 62 a temperature detection element 68 as a temperature detection means 68 a display which constitutes the first notification means, the second notification means, the notification means, and the display means T1 The temperature of the recording head and the T constituting the detected temperature
G temperature To set temperature

Claims (17)

[Claims] 1. A method of protecting the temperature of a printhead used in a printing apparatus having a printhead that discharges ink, comprising: comparing the temperature of the printhead at or above a set temperature; If the temperature is equal to or higher than the predetermined temperature, a suction process operation for forcibly suctioning the nozzle holes of the print head is performed a plurality of times. After the suction process operation is performed, a temperature comparison is performed again. If the above is the case, a notification to that effect is made to be executed by the first notifying means. 2. A method for protecting a temperature of a recording head used in a recording apparatus having a recording head for discharging ink, wherein the recording apparatus is driven when performing a suction processing operation for forcibly suctioning a nozzle hole of the recording head. Suction means,
A driving unit shared as a driving source between the recording head and a paper feeding unit for feeding the recording paper; performing a temperature comparison as to whether or not the temperature of the recording head is equal to or higher than a set temperature; When the temperature is equal to or higher than the set temperature, the paper feeding means is driven to execute the discharge processing of the recording paper, and after the discharge of the recording paper is completed, the suction processing operation is performed at least once, and the suction processing operation is performed. And then, if the temperature of the recording head is equal to or higher than the set temperature, a notification to that effect is executed by the first notification means. Temperature protection method. 3. The print head temperature protection method according to claim 2, wherein the suction processing operation is performed a plurality of times. 4. A method for protecting the temperature of a printhead used in a printing apparatus having a printhead that discharges ink, comprising: comparing the temperature of the printhead to a set temperature or not; If the temperature is equal to or higher than the set temperature, a suction process operation for forcibly sucking the nozzle holes of the recording head is performed, and a process for comparing the temperature is performed again after the suction process operation. Until the temperature of the head becomes lower than the set temperature, the suction processing operation is performed at most a set number of times, does not return from the high-temperature state even once, and the number of times of the suction processing operation is equal to or more than the set number of times, A recording head temperature protection method, characterized in that the notification of the effect is executed by a first notification unit. 5. A method of protecting the temperature of a printhead used in a printing apparatus having a printhead that ejects ink, comprising: performing a temperature comparison on whether the temperature of the printhead is equal to or higher than a set temperature; If the temperature is equal to or higher than the temperature, the suction processing operation of forcibly sucking the nozzle holes of the recording head is performed, and the number of times the recording head becomes equal to or higher than the set temperature is counted by the temperature comparison. If this is the case, the first notification means notifies the user of this fact. 6. The print head temperature protection method according to claim 5, wherein the notification is executed when the number of times the print head reaches the set temperature or more becomes the set number or more within a set time. A method for protecting a recording head temperature. 7. The print head temperature protection method according to claim 1, wherein the notification performed by the first notification unit after the temperature comparison performed after the execution of the suction processing operation is performed. A notification that the communication of the abnormality of the recording head is performed. 8. The method for protecting the temperature of a recording head according to claim 1, wherein the recording head has a temperature for detecting a temperature of a print driving unit built in the recording head. A temperature protection method for a recording head, comprising: a temperature detection unit; and performing the temperature comparison using a detected temperature detected by the temperature detection unit and the set temperature. 9. The recording head temperature protection method according to claim 8, wherein said print driving means is a piezoelectric vibrator, and said temperature detecting means is provided for each of said piezoelectric vibrators. When at least one detected temperature is equal to or higher than a set temperature, the suction processing operation is executed. 10. The print head temperature protection method according to claim 1, wherein the suction processing operation is performed when it is determined from the temperature comparison that the suction processing operation is necessary. The second notification means notifies the user of the fact, and the suction processing operation is performed by a manual operation of the operator based on the notification, and the recording head temperature protection method. 11. The recording head temperature protection method according to claim 10, wherein the recording device executes the suction processing operation when the power is turned on again, and the second notification unit performs the recording operation. A method for protecting the temperature of a recording head, which comprises notifying that the power of the apparatus is turned off and on again. 12. The recording head temperature protection method according to claim 1, wherein at least one of the first and second notification means includes:
A method for protecting the temperature of a recording head, characterized in that the notification is executed after the temperature comparison and is displayed so that the notification can be visually judged. 13. The recording head temperature protection method according to claim 1, wherein the first and second notification units are communicably connected to the recording device. Wherein the notification is displayed on the screen when the notification is executed, wherein the notification is displayed on a screen. 14. A recording head for discharging ink, a temperature detecting unit for detecting a temperature inside the recording head, a suction unit for performing a suction processing operation for forcibly suctioning a nozzle hole of the recording head, It is determined whether or not the detected temperature detected by the temperature detecting means is equal to or higher than a set temperature. If the temperature is equal to or higher than the set temperature, the suction means is operated to execute the suction processing operation a plurality of times. A recording apparatus, comprising: a control unit for performing a temperature comparison again after the operation, and when the detected temperature of the temperature detecting unit is equal to or higher than the set temperature, causing the notifying unit to execute the notification. 15. A recording head for discharging ink, a temperature detecting unit for detecting a temperature inside the recording head, a suction unit for performing a suction process operation for forcibly suctioning a nozzle hole of the recording head, Paper feeding means for feeding the recording paper, driving means shared and used as a driving source between the suction means and the paper feeding means, and a temperature detected by the temperature detecting means. It is determined whether or not the temperature is equal to or higher than the set temperature, and when the temperature is equal to or higher than the set temperature, the paper feed unit is driven to discharge the recording paper,
After the discharge of the recording paper is completed, the suction unit is operated to execute the suction processing operation at least once, and after performing the suction processing operation, the temperature comparison is performed again, and the detection of the temperature detection unit is performed. When the temperature is equal to or higher than the set temperature, the recording device is provided with control means for notifying the notification means to that effect. 16. A recording head for discharging ink, a temperature detecting unit for detecting a temperature inside the recording head, a suction unit for performing a suction processing operation for forcibly suctioning a nozzle hole of the recording head, Determine whether the temperature detected by the temperature detecting means is equal to or higher than a set temperature, and when the temperature is equal to or higher than the set temperature, activate the suction means to execute the suction processing operation;
After the suction process operation, a process of performing temperature comparison is performed again.The suction process operation is performed at most a set number of times until the temperature detected by the temperature detecting unit after the suction process operation becomes lower than a set temperature. If the number of times of the suction processing operation is equal to or more than the set number without returning from the state even once, the recording device is provided with control means for notifying the notification to that effect. 17. A recording head for discharging ink, a temperature detecting unit for detecting a temperature inside the recording head, a suction unit for performing a suction processing operation for forcibly suctioning a nozzle hole of the recording head, Determine whether the temperature detected by the temperature detecting means is equal to or higher than a set temperature, and when the temperature is equal to or higher than the set temperature, activate the suction means to execute the suction processing operation;
Control means for counting the number of times the temperature detected by the temperature detecting means after the suction processing operation is equal to or higher than the set temperature, and when the number is equal to or more than the set number, notifying the notification means to that effect. A recording device comprising: