JP2002337360A - Ink-jet recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink-jet recorder which can prevent ink from settling by stirring the ink stored in a replaceable ink cartridge without complicating and making large the ink cartridge. SOLUTION: There are provided a recording head 1 for discharging ink drops corresponding to printing signals, the ink cartridge 2 loaded detachably to the recording head 1 for storing ink to be supplied to the recording head 1, and a heater 15 as a stirring means for stirring by heating the ink inside the ink cartridge 2 loaded to the recording head 1. Since the ink-stirring means is set to the apparatus side without being set to the ink cartridge 2, the ink stored in the replaceable ink cartridge 2 can be stirred and effectively prevented from settling.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording apparatus having a recording head for discharging ink supplied from an ink cartridge as ink droplets.

[0002]

2. Description of the Related Art In general, ink used in an ink jet recording apparatus is obtained by uniformly dispersing and dispersing dispersed particles such as a pigment and a toner in a solvent. Such ink is not printed for a long time,
If the ink is not circulated in the ink storage unit, the dispersed particles have a property of falling and settling due to the difference in specific gravity between the solvent and the dispersed particles.

It has been studied to provide a stirrer to keep the concentration of such dispersed particles constant. For example, in an ink jet printing apparatus disclosed in Japanese Patent Application Laid-Open No. 5-229140, a stirring blade and an ink jetting unit are provided in an ink storage unit in order to effectively stir ink having high viscosity or ink containing pigment having a large specific gravity. A rotation shaft for applying rotation is provided, and is rotated by a drive motor from outside the ink storage unit.

However, in the above-described apparatus, a structure in which a stirring blade and a rotating shaft are provided in the ink storage unit is adopted.
There is a problem that the size of the ink storage unit is increased by the driving unit including the stirring blade and the rotating shaft. If the amount of ink in the ink storage unit falls below a certain amount, the function of the stirring blade is reduced by half, and a sufficient stirring effect cannot be expected. Further, the rotation of the stirring blade causes a flow of ink in a certain direction in the ink storage unit, and depending on the shape of the inner wall surface of the ink storage unit, there is a problem that ink stagnation is likely to occur near the inner wall surface.

[0005] To solve such a problem, for example, an electrostatic ink jet recording apparatus disclosed in Japanese Patent Application Laid-Open No. 10-286962 has been devised. In this recording apparatus, a pair of agitating electrodes are arranged inside the ink storage unit, and the polarity is changed by applying an AC voltage for a certain period of time. As a result, even when the charged toner precipitates in the ink storage unit, the charged toner that has precipitated repeatedly moves to the low voltage side due to the change in the polarity of the stirring electrode, and the precipitated charged toner has an agitating action, and the ink having a constant concentration is formed. Becomes

[0006]

However, in the above-mentioned ink jet recording apparatus, the polarity of the ink is changed by applying an AC voltage to a pair of stirring electrodes provided inside the ink storage unit for a certain period of time. Therefore, there is a problem that a control controller for applying an AC voltage to the stirring electrode is required, and the apparatus becomes complicated and large. In addition, since a pair of stirring electrodes must be provided in the ink storage unit and the stirring electrode and the controller must be electrically connected, the structure of the ink storage unit itself is complicated and large, and cost increases can be avoided. In addition, there is a limit to the amount of ink that can be stored. For this reason, it has been difficult to apply the method to a relatively small recording apparatus using a replaceable ink cartridge.

The present invention has been made in view of such circumstances, and an ink jet that can prevent sedimentation by stirring ink stored in a replaceable ink cartridge without increasing the size and complexity of the ink cartridge. The purpose of the present invention is to provide an expression recording device.

[0008]

In order to achieve the above object, an ink jet recording apparatus according to the present invention comprises a recording head for discharging ink droplets in response to a print signal, and a recording head detachably mounted on the recording head. The gist of the invention is to provide an ink cartridge for storing ink to be supplied to the recording head, and ink stirring means for stirring ink in the ink cartridge mounted on the recording head.

That is, the ink jet recording apparatus includes a recording head for ejecting ink droplets in response to a print signal, and an ink cartridge removably mounted on the recording head for storing ink supplied to the recording head. ,
An ink stirring means for stirring the ink in the ink cartridge mounted on the recording head. As described above, since the ink stirring means is provided on the apparatus side instead of the ink cartridge, the ink stored in the replaceable ink cartridge can be stirred to effectively prevent sedimentation.

In the ink jet recording apparatus of the present invention, when the ink stirring means is heating means for heating the ink in the ink cartridge and causing convection in the ink cartridge, the ink stirring means is provided not on the ink cartridge but on the apparatus side. Since the ink in the ink cartridge is agitated by the heating means, the ink stored in the replaceable ink cartridge is agitated and sedimentation is effectively prevented without complicating or enlarging the structure of the ink cartridge. Can be.

In the ink jet recording apparatus according to the present invention, when the ink stirring means is a magnetic field generating means for moving the magnetic ink stored in the ink cartridge in the ink cartridge, the ink stirring means is provided not on the ink cartridge but on the apparatus side. The magnetic ink inside the ink cartridge is agitated by the magnetic field generating means, which effectively stirs the ink stored in the replaceable ink cartridge without complicating or increasing the size of the ink cartridge. Can be prevented.

In the ink jet recording apparatus of the present invention, when the ink stirring means is an electric field generating means for moving the charged ink stored in the ink cartridge in the ink cartridge, the ink stirring means is provided not to the ink cartridge but to the apparatus side. Since the charged ink in the ink cartridge is agitated by the provided electric field generating means, the ink stored in the replaceable ink cartridge is agitated and sedimentation is effected without complicating and increasing the size of the ink cartridge. Can be prevented.

In the ink jet type recording apparatus of the present invention, when the ink stirring means is provided on a carriage for reciprocating a recording head, the ink stirring means provided on the carriage is used for the ink cartridge. Since the ink is stirred, the ink stored in the replaceable ink cartridge can be stirred to effectively prevent sedimentation without complicating and enlarging the structure of the ink cartridge.

In the ink jet recording apparatus of the present invention, when the ink stirring means is provided at any position within the moving range of the carriage for reciprocating the recording head, the ink stirring means is provided not on the ink cartridge but on the apparatus side. Since the ink inside the ink cartridge is stirred by the provided ink stirring means, the ink stored in the replaceable ink cartridge is effectively stirred and sedimentation is effectively performed without complicating and increasing the size of the ink cartridge. Can be prevented.

In the ink jet type recording apparatus of the present invention, the ink stirring means is provided at any one of a plurality of positions within a moving range of a carriage for reciprocating a recording head, and a force for moving the ink in the ink cartridge depends on the position. If different, the ink is moved in the ink cartridge with the movement of the carriage, whereby the ink can be effectively agitated and sedimentation can be prevented.

In the ink jet type recording apparatus of the present invention, two of the ink stirring means are provided so as to surround the ink cartridge at any point within a moving range of a carriage for reciprocating a recording head, and the two ink stirring means are provided. In the case where a reversing means for reversing the force for moving the ink in the ink cartridge is provided between the agitating means, the ink is effectively agitated by reversing the force for moving the ink in the ink cartridge. And settling can be prevented.

In the ink jet type recording apparatus of the present invention, a carriage for reciprocating a recording head is provided, and the ink stirring means is provided with a magnetic member provided in an ink chamber of an ink cartridge and a magnetic member provided in an area including a moving range of the carriage. A magnetic member moving means for moving the magnetic member provided at any location, if the magnetic member is loaded into the ink cartridge, the magnetic member moves along with the reciprocation of the carriage. The member moves within the ink chamber and agitates the ink stored in the replaceable ink cartridge, thereby effectively preventing sedimentation.

In the ink jet recording apparatus of the present invention, when the magnetic member moving means is a magnet provided to change the angle with respect to the moving direction of the carriage, the magnetic member moves with the reciprocating movement of the carriage. The member moves within the ink chamber and agitates the ink stored in the replaceable ink cartridge, thereby effectively preventing sedimentation.

In the ink jet recording apparatus according to the present invention, when the magnetic member moving means is at least one magnet provided in an area including a moving range of the carriage, the magnetic member moving means moves along with the reciprocating movement of the carriage. The member moves within the ink chamber and agitates the ink stored in the replaceable ink cartridge, thereby effectively preventing sedimentation.

[0020]

Next, embodiments of the present invention will be described in detail.

FIG. 1 is a diagram showing an example of a peripheral structure of an ink jet recording apparatus according to the present invention. This apparatus includes an ink cartridge (hereinafter, referred to as “cartridge”) 2 and a carriage 3 to which a recording head 1 is attached.

The carriage 3 includes a timing belt 4
Is connected to a stepping motor 5 via a guide bar 6, and is guided by a guide bar 6 to reciprocate in the paper width direction (main scanning direction) of the recording paper 7. The carriage 3 has a box shape open to the top, and is mounted on the surface (the lower surface in this example) facing the recording paper 7 so that the nozzle surface of the recording head 1 is exposed, and the carriage 2 is accommodated therein. It has become.

Then, ink is supplied from the cartridge 2 to the recording head 1 and ink droplets are ejected onto the upper surface of the recording paper 7 while moving the carriage 3 to print images and characters on the recording paper 7 in a dot matrix. Has become.

In the drawing, reference numeral 8 denotes a cap for sealing the nozzles of the recording head 1 during printing suspension to prevent the nozzles from drying as much as possible. The cap 8 also functions as an ink receiver during a flushing operation in which ink droplets are forcibly ejected from nozzles at regular intervals during printing. Reference numeral 9 denotes a wiper member for wiping the nozzle surface of the recording head 1.

FIG. 2 is a sectional view showing an embodiment of the ink jet recording apparatus of the present invention. As shown in the drawing, the carriage 3 has a substantially box shape that opens on the upper surface as a whole, and the cartridge 2 is accommodated therein. The recording head 1 is attached to the carriage 3 so that a nozzle surface is exposed on a lower surface.

On the bottom of the carriage 3, there is provided a positioning member 24 for positioning the cartridge 2 by being fitted with an ink supply section 13 formed on the lower surface of the cartridge 2. On the upper surface of the positioning member 24, an ink supply needle 14 which is inserted into the ink supply unit 13 and receives supply of ink to be supplied to the recording head 1 from the cartridge 2 is provided upright.

In the drawing, reference numeral 10 denotes a guide hole through which the guide bar 6 is inserted to guide the carriage 3. Also,
On the front and rear side surfaces (left and right in the drawing) of the cartridge 2,
Locking portion 2 provided before and after the upper opening edge of carriage 3
Locking members 11 and 12 are formed to engage the cartridges 5 and 26 to fix the cartridge 2 to the carriage 3.

The carriage 3 is provided at its bottom with a heater 15 which contacts the lower surface of the cartridge 2 to heat the ink in the cartridge 2. Also,
At least a portion of the cartridge 2 that is in contact with the heater 15 is provided with an ink chamber 17 that stores liquid, flowable ink that is not held by an ink holder such as a porous material.

With such a configuration, in the above-described ink jet recording apparatus, the heater 1 provided on the carriage 3
5, the bottom of the cartridge 2 is heated and the ink chamber 17 is heated.
The ink in the ink chamber 17 can be agitated by heating the ink in the vicinity of the bottom inside to generate convection. As described above, instead of the cartridge 2, the carriage 3 of the printing apparatus is used.
Since the ink inside the cartridge 2 is agitated by the heater 15 provided in the cartridge 2, the ink stored in the replaceable cartridge 2 is agitated and the sedimentation of the ink is effected without complicating and increasing the size of the cartridge 2. Can be prevented.

In the above embodiment, the heater 15 is provided so as to be in contact with the bottom surface of the ink chamber 17. However, the present invention is not limited to this. It can also be provided as follows.

FIG. 3 is a plan view showing an ink jet recording apparatus according to a second embodiment of the present invention. In this recording apparatus, the cartridge 2 is provided with an ink chamber 17 (see FIG. 4) for storing a liquid, flowable ink that is not held by an ink holding body such as a porous material. In this example, the cartridge 2 stores magnetic ink containing magnetic particles 20 (see FIG. 4).

In the recording apparatus, the carriage 3
In the movement range T, magnets 16A and 16B for moving the magnetic ink in the cartridge 2 within the cartridge 2 are provided on the rear side of the carriage 3 at the left end and in front of the carriage 3 on the right end, respectively. 16
A magnetic field is generated in the area around A and 16B. Accordingly, the force for moving the magnetic ink in the ink cartridge 2 differs depending on the location. FIG.
Reference numeral 19 denotes a paper feed roll for feeding the recording paper 7 in a direction perpendicular to the moving direction of the carriage 3. The other parts are the same as those of the above embodiment, and the same parts are denoted by the same reference numerals.

With such a configuration, in the ink jet recording apparatus, as shown in FIG. 4, when printing is performed by reciprocating the carriage 3, when the carriage 3 moves to the left end, When the magnetic particles 20 are attracted to the magnet 16A on the left end and move backward, and the carriage 3 moves to the right end on the opposite side, the ink chamber 17
The magnetic particles 20 inside are attracted by the right end magnet 16B and move forward.

In this way, the magnetic ink in the ink chamber 17 can be agitated by alternately moving the magnetic particles 20 from one side to the other as the carriage 3 reciprocates. As described above, the magnet 16 provided in the movement range T of the carriage 3 of the recording apparatus, not the cartridge 2, is used.
A, 16B agitates the ink in the cartridge 2, so that the ink stored in the replaceable cartridge 2 is agitated and the sedimentation of the ink is effectively prevented without complicating and enlarging the structure of the cartridge 2. Can be prevented.

FIG. 5 is an explanatory view showing an ink jet recording apparatus according to a third embodiment of the present invention. In this recording apparatus, one magnet 16 is provided above the carriage 3 at one end of the moving range of the carriage 3. The other parts are the same as those in the above embodiments, and the same parts are denoted by the same reference numerals.

In this apparatus, when the carriage 3 moves to the end where the magnet 16 is provided, the magnetic particles 20 in the ink chamber 17 are attracted by the magnet 16 and move upward, and the carriage 3 moves to another position. When the magnetic particles 20 move to the position, the magnetic particles 20 that have moved upward begin to settle under their own weight. in this way,
By repeatedly moving the magnetic particles 20 upward,
The magnetic ink in the ink chamber 17 can be stirred.

In this case, the magnet 16 is preferably provided at an end opposite to the end where the cap 8 is provided.
By doing so, the cap 8 side stays in the carriage 3 for a long time, so that the magnetic particles 20 attracted to the magnet 16 and moved upward are sufficiently settled and agitated at the position of the carriage 3. . Other than that, it is the same as the above embodiments, and has the same effect.

In the recording apparatus according to the second embodiment, an example has been described in which the magnets 16A and 16B provided at the left and right ends are respectively disposed on the rear side and the front side of the carriage 3.
The present invention is not limited to this, and may be provided on the upper side and the lower side of the carriage 3.

In the recording apparatus, two magnets 16
Although the example in which A and 16B are respectively arranged at the left and right ends in the moving range T of the carriage 3 has been described, the present invention is not limited to this. Can be placed. Further, in the second and third embodiments, the magnetic field generating means for generating a magnetic field may include magnets 16, 16A, 16B.
However, the present invention is not limited to this, and a coil or the like may be used.

FIG. 6 is an explanatory view showing an ink jet recording apparatus according to a fourth embodiment of the present invention. In this recording apparatus, the pair of electromagnets 16C and 16D
The carriage 3 is provided on one end side of the moving range of. The polarity inversion means 28 for appropriately inverting the polarity is connected to the electromagnets 16C and 16D. The other parts are the same as those in the above embodiments, and the same parts are denoted by the same reference numerals.

In this recording apparatus, a pair of electromagnets 16C, 1 sandwiching the ink cartridge 2 by the polarity reversing means 28
By reversing the polarity of 6D, the force for moving the magnetic particles 20 is reversed. With this reversal, the magnetic particles 20 are alternately moved from one side to the other, and the magnetic ink in the ink chamber 17 can be stirred.

FIG. 7 is an explanatory view showing an ink jet recording apparatus according to a fifth embodiment of the present invention. In this recording apparatus, the cartridge 2 has an ink chamber 17 that holds liquid ink that is not held by an ink holder such as a porous material and that is in a flowable state. In this example, the cartridge 2 stores charged ink containing charged particles 21.

In the recording apparatus, the carriage 3
A pair of charging members 22 are provided at the left end portion and the right end portion within the moving range of the carriage 3 at positions sandwiching the carriage 3 from front and rear, respectively.
An electric field is generated in a region sandwiched between a pair of charging members 22. In the figure, reference numeral 27 denotes a power supply device for applying a voltage to the charging member 22.

The charging member 22 provided at the left end of the charging members 22 of the above-described pair has a negatively charged charging member 22 disposed in front of the carriage 3 and a positively charged charging member 22 on the rear side of the carriage 3. A charging member 22 is provided. On the other hand, the charger 22 provided at the right end has a positively charged charger 22 disposed in front of the carriage 3 and a negatively charged charger 22 disposed rearward of the carriage 3.
The other parts are the same as those in the above embodiments, and the same parts are denoted by the same reference numerals.

With this configuration, in the ink jet recording apparatus, when printing is performed by reciprocating the carriage 3, when the carriage 3 moves to the left end, the charged particles 21 in the ink chamber 17 are moved to the left end. It is attracted to the charged body 22 and moves. At this time, the positively charged one of the charged particles 21 is attracted to the negatively charged body 22 and moves forward, and the negatively charged one is attracted to the positively charged body 22 to move backward. Moving.

Conversely, when the carriage 3 moves to the right end on the opposite side, the charged particles 21 in the ink chamber 17 are attracted and moved by the charged body 22 on the right end side. At this time, the positively charged one of the charged particles 21 is attracted to the negatively charged member 22 and moves backward,
A negatively charged member is a positively charged member 22
And is moved forward.

As described above, the charged ink in the ink chamber 17 can be agitated by alternately moving the charged particles 21 from one side to the other side. As described above, since the ink in the cartridge 2 is agitated by the charging member 22 provided in the moving range T of the carriage 3 of the recording apparatus instead of the cartridge 2, the structure of the cartridge 2 is not complicated and large. In addition, the ink stored in the replaceable cartridge 2 can be agitated to effectively prevent the ink from settling.

In the above-described recording apparatus, the voltage applied to the pair of charging members 22 at the position sandwiching the carriage 3 from front and rear is
It is also possible to make it appropriately inverted. In this way, the force for moving the charged particles 21 is reversed, and the charged particles 21 can be alternately moved from one side to the other, so that the charged ink in the ink chamber 17 can be stirred.

FIG. 8 is a front view showing an ink jet recording apparatus according to a sixth embodiment of the present invention. In this recording apparatus, the cartridge 2 is provided with an ink chamber 17 (see FIG. 9) for storing a liquid ink that is not held by an ink holding body such as a porous material and is in a flowable state. In the ink chamber 17, for example, an iron piece,
Magnetic member 23 attracted to magnets such as stainless steel pieces
Are movably accommodated.

The recording apparatus has a rod-shaped magnet 18 provided so that its height changes in the moving direction of the carriage over substantially the entire moving range T of the carriage 3.
Is provided. The other parts are the same as those in the above embodiments, and the same parts are denoted by the same reference numerals.

With such a configuration, in the ink jet type recording apparatus, as shown in FIG. 9, when printing is performed by reciprocating the carriage 3, when the carriage 3 moves to the left end, the ink in the ink chamber 17 is removed. The magnetic member 23 is attracted by the magnet 18 and moves downward. Then, as the carriage 3 moves rightward, the magnetic member 23 in the ink chamber 17 is attracted by the magnet 18 and gradually moves upward. Conversely, when the carriage 3 moves to the left, the magnetic member 23 in the ink chamber 17 is attracted by the magnet 18 and gradually moves downward.

As described above, the ink in the ink chamber 17 can be agitated by repeatedly moving the magnetic member 23 up and down. As described above, since the ink inside the cartridge 2 is agitated by the magnet 18 provided in the moving range T of the carriage 3 of the recording apparatus instead of the cartridge 2, the cartridge 2 can be replaced without making the structure of the cartridge 2 complicated and large. The ink stored in the possible cartridge 2 can be stirred to effectively prevent the ink from settling.

FIG. 10 is an explanatory view showing an ink jet recording apparatus according to a seventh embodiment of the present invention. In this recording apparatus, over a substantially entire length of the moving range T of the carriage 3, a plurality of magnets 18 having a short length are provided so that the height changes stepwise in the moving direction of the carriage 3.
Other than that, the fifth embodiment is the same as the fifth embodiment, and the same parts are denoted by the same reference numerals. This recording apparatus also has the same operation and effect as the fifth embodiment.

In the recording apparatuses of the sixth and seventh embodiments, the magnet 18 is provided so that its height changes in the moving direction of the carriage 3, but the present invention is not limited to this. 18 may be provided so that the angle changes horizontally and rearward with respect to the moving direction of the carriage 3. In this case, the same operation and effect can be obtained.

FIG. 11 is an explanatory view showing an ink jet recording apparatus according to an eighth embodiment of the present invention. In this recording apparatus, one magnet 18 is provided above the carriage 3 at one end of the moving range of the carriage 3. The other parts are the same as those in the sixth and seventh embodiments, and the same parts are denoted by the same reference numerals.

In this apparatus, when the carriage 3 moves to the end where the magnet 18 is provided, the magnetic member 23 in the ink chamber 17 is attracted by the magnet 18 and moves upward, and the carriage 3 moves to another position. When the magnetic member 23 moves to the position, the magnetic member 23 that has moved upward sinks under its own weight. As described above, the ink in the ink chamber 17 can be agitated by repeatedly moving the magnetic member 23 upward. Other than that, it is the same as the above embodiments, and has the same effect.

In each of the above-described embodiments, the ejection element that ejects ink from the recording head 1 includes a piezoelectric vibrator that raises and lowers the pressure in the pressure generation chamber and discharges the ink in the pressure generation chamber, Various elements such as a heating element for heating and vaporizing the ink can be used.

[0058]

As described above, according to the ink jet recording apparatus of the present invention, the ink stored in the replaceable ink cartridge is agitated because the ink stirring means is provided on the apparatus side instead of the ink cartridge. And sedimentation can be effectively prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an ink jet recording apparatus to which the present invention is applied.

FIG. 2 is a sectional view showing a first embodiment of the ink jet recording apparatus of the present invention.

FIG. 3 is a plan view showing a second embodiment of the ink jet recording apparatus of the present invention.

FIG. 4 is an explanatory diagram showing the operation of the ink jet recording apparatus.

FIG. 5 is an explanatory diagram showing a third embodiment of the ink jet recording apparatus of the present invention.

FIG. 6 is an explanatory diagram showing a fourth embodiment of the ink jet recording apparatus of the present invention.

FIG. 7 is an explanatory diagram showing a fifth embodiment of the ink jet recording apparatus of the present invention.

FIG. 8 is a front view showing a sixth embodiment of the ink jet recording apparatus of the present invention.

FIG. 9 is an explanatory view showing the operation of the ink jet recording apparatus.

FIG. 10 is an explanatory diagram showing a seventh embodiment of the ink jet recording apparatus of the present invention.

FIG. 11 is an explanatory diagram showing an eighth embodiment of the ink jet recording apparatus of the present invention.

[Explanation of symbols]

 Reference Signs List 1 recording head 2 ink cartridge 3 carriage 4 timing belt 5 stepping motor 6 guide bar 7 recording paper 8 cap 9 wiper member 10 guide hole 11 locking member 12 locking member 13 ink supply unit 14 ink supply needle 15 heater 16 magnet 16A magnet 16B Magnet 16C Electromagnet 16D Electromagnet 17 Ink chamber 18 Magnet 19 Paper feed roll 20 Magnetic particles 21 Charged particles 22 Charged body 23 Magnetic member 24 Positioning member 25 Locking portion 26 Locking portion 27 Power supply device 28 Polarity reversing means

Claims (11)

[Claims] A recording head for ejecting ink droplets in response to a print signal; an ink cartridge detachably mounted on the recording head for storing ink supplied to the recording head; and an ink cartridge mounted on the recording head. An ink stirring means for stirring the ink in the ink cartridge. 2. An ink jet recording apparatus according to claim 1, wherein said ink stirring means is a heating means for heating ink in the ink cartridge and causing convection in the ink cartridge. 3. The ink jet recording apparatus according to claim 1, wherein said ink stirring means is a magnetic field generating means for moving the magnetic ink stored in the ink cartridge in the ink cartridge. 4. An ink jet recording apparatus according to claim 1, wherein said ink stirring means is an electric field generating means for moving the charged ink stored in the ink cartridge in the ink cartridge. 5. An ink jet recording apparatus according to claim 1, wherein said ink stirring means is provided on a carriage for reciprocating a recording head. 6. The ink jet recording apparatus according to claim 1, wherein said ink stirring means is provided at any position within a movement range of a carriage for reciprocating a recording head. 7. The ink agitating means is provided at any one of a plurality of positions within a moving range of a carriage for reciprocating a recording head, and a force for moving ink in an ink cartridge differs depending on the position. 5. The ink jet recording apparatus according to 4. 8. An ink stirrer comprising: two ink stirring means so as to surround an ink cartridge at any position within a movement range of a carriage for reciprocating a recording head; 5. The ink jet recording apparatus according to claim 3, further comprising a reversing means for reversing a force for moving the ink in the cartridge. 9. A carriage for reciprocating a recording head, wherein the ink stirring means is provided at a magnetic member provided in an ink chamber of an ink cartridge and at any one of regions including a moving range of the carriage. 2. An ink jet recording apparatus according to claim 1, further comprising a magnetic member moving means for moving said magnetic member. 10. The ink jet recording apparatus according to claim 9, wherein said magnetic member moving means is a magnet provided so as to change an angle with respect to a moving direction of the carriage. 11. An ink jet recording apparatus according to claim 9, wherein said magnetic member moving means is at least one magnet provided in a region including a moving range of the carriage.