JPH04197638A - Ink jet recorder - Google Patents

Abstract

PURPOSE:To improve the reliability of a recorder and quality of a recording image by a method wherein a guide surface for a material to be recorded for regulating a position of a recording surface of the material to be recorded to a recording means is cleaned by using liquid of components different from ink. CONSTITUTION:A felt 33 impregnated with liquid of larger electric resistance than that of ink of silicone oil or the like is arranged other than a flexible blade 31 for cleaning by wiping a surface of a conveyance belt 4 and a waste ink receiver 32 at a specific position of the conveyance belt (electrostatic absorption belt) 4. The blade 31 and the felt 33 are rotatably supported centering a fulcrum 34 with their holders. By pivoting upward based on specific control sequence, they are pressure on a guide surface 18 of the material to be recorded of the conveyance belt 4, and cleaning operation can be performed. Thereby, cleaning capacity of the guide surface of the material to be recorded is improved, and both reliability of a recorder and quality of a recording image can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an inkjet recording apparatus that performs recording by ejecting ink from a recording means onto a recording material.

[Conventional technology] Used in conjunction with computers, word processors, etc.
A recording device such as a printer, a copying machine, or a facsimile machine that is used independently is configured to form an image on a recording material such as paper, plastic, or thin plate based on image information.

The recording device may be an inkjet type,
It can be divided into wire dot type, thermal type, laser beam type, etc.

Among these, the inkjet type (inkjet recording device) performs recording by ejecting ink from the recording means onto the recording material, and can record high-definition images at high speed, and is a non-impact type. This has advantages such as less noise and ease of recording color images using multicolored inks.

In particular, in the case of inkjet recording devices that use inkjet recording means (recording heads) that use heat as ink ejection energy, electrical By forming a heat converter, an electrode, a liquid path wall, a top plate, etc., it is possible to easily manufacture a device with a high-density liquid path arrangement (discharge port arrangement).

Further, the above ink (recording liquid) is generally composed of water, a solvent, a dye, a pigment, and the like.

Therefore, in an inkjet recording apparatus, an image is formed by causing such ink to fly toward an opposing recording material in accordance with an image signal.

In that case, it is necessary to convey the recording material while maintaining a certain gap between it and the recording means.

Therefore, as a means for forming a recording material guide surface for regulating the position of the recording surface of the recording material with respect to the recording means, in addition to a configuration that uses a conveyance roller and a platen, an endless heald that also serves as a conveyance means is used. Alternatively, drums are often used.

(Technical problem to be solved by the invention) However,
With conventional inkjet recording devices, ink may adhere to other than the recording material due to scattering of ejected ink or poor guidance of the recording material, resulting in staining or rust on the back side of the recording material. there were.

In addition, the recording material is conveyed by electrostatic adsorption force.
The surface of the conveying member (heald, drum, etc.) is insulated,
In the case of a transport system that injects charge into the recording material, conductive ink adheres to the transport member, lowering its surface resistance, and as a result, charge leaks and the adsorption force decreases. In some cases, the recording material floats off the guide surface and comes into contact with the recording bed or bumps into other guide members, causing transport failure.

The present invention has been made in view of such technical problems, and an object of the present invention is to improve the cleaning ability of the recording material guide surface, and to improve the reliability of the recording device and the quality of recorded images. An object of the present invention is to provide an inkjet recording device that obtains the desired results.

Means for Solving the Problem] The present invention provides an inkjet recording apparatus that performs recording by discharging ink from a recording means onto a recording material, and a recording medium for regulating the position of the recording surface of the recording material with respect to the recording means. An inkjet that improves the cleaning ability of the recording material guide surface and improves the reliability of the recording device and the quality of recorded images by cleaning the material guide surface using a liquid with a different composition from ink. The present invention provides a recording device.

In addition, when a recording material guide surface is formed by an electrostatic attraction conveying member (such as a heald or a drum) that conveys the recording material, as in the case where the recording material is conveyed by electrostatic adsorption force, electric By cleaning the surface of the electrostatic adsorption conveyance member using a liquid with higher resistance than ink, it is possible to further prevent a decrease in adsorption force due to a decrease in insulation of the recording material guide surface, thereby preventing conveyance defects. An inkjet recording device is provided.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 2 is a longitudinal cross-sectional view showing the overall structure of an inkjet recording apparatus according to an embodiment of the present invention, and FIG. be.

In FIG. 2, recording materials 7 are stored in a stacked state in a paper feed cassette 6 that is removably attached to the main body of the apparatus, and one recording material 7 is stored near the exit of the paper feed cassette 6. A feeding roller 9 is provided between the pink unroller 8 for feeding sheets one by one and the electrostatic adsorption belt (RJ feeding heald) 4.
, guide member 10, registration roller (feeding roller) 11
is installed.

The registration roller 11 is used to determine the timing of recording by the recording means 1.

The recording material 7 is fed onto the endless heald-like transport heald 4 while being timed by the registration rollers 11, and is transported by the transport heald 4 to a recording medium facing the recording means (recording means 7) IB, IClIM, and IY. transported through the department.

In FIGS. 1 and 2, recording heads IB, IClIM, and IY as recording means are positioned and mounted on a processor 2. In FIG.

In the illustrated example, four recording nozzles are used, and in the case of full color recording, these recording nodules IB and IC are used.
IIM and IY are used, for example, to record with blank, cyan, magenta, and yellow inks.

In the following description, the four recording means (recording heads) IB, IClIM, and IY are simply referred to as recording means 1 or recording head 1, whether they are shown as a whole or any one of them is shown.

In FIG. 2, a recovery means 3 for recovering the ejection of the recording means 1 is arranged diagonally above the block 2.

The block 2'8 and the recovery means 3 are supported so as to be movable to predetermined positions, and during recording, the block 2'8 is at the position shown by the solid line, but during non-recording, including during a recovery operation, the block 2 is used as a fulcrum. 12 and move it to the position indicated by the two-dot chain line 2, and then move the recovery means 3 to the position also shown by the two-dot chain line, thereby removing the porous member or cap provided on the recovery means 3. The ink discharge portion (discharge port surface) of the dome is brought into contact with each recording to cap (seal) it.

In FIGS. 1 and 2, a sheet-shaped recording material 7 such as paper or a plastic thin plate is conveyed through a recording section by a conveying heald 4 in the form of an endless belt.

This transport heald 4 is charged with an electric charge by a charging roller 17 disposed at a predetermined position on its travel path, and is capable of electrostatically adsorbing a recording material 7 such as a fed paper or a plus-size yl+Fx. It is made up of a member (belt).

The portion of the electrostatic adsorption heald 4 facing the recording means l is:
The transport path is regulated by the hack platen 5, and a recording material guide surface 18 is formed for regulating the position of the recording surface of the recording material 7 with respect to the ejection port surface of the recording means 1.

The gap between the recording means 1 and the recording material 7 in this recording section is maintained at a narrow interval with high precision, for example, 0.5 mm±0.10 IIn.

At a position on the upstream side of the recording means 1 of the electrostatic adsorption heald 4, a static eliminating mylar 19 for removing electric charge on the recording surface side of the recording material 7 is disposed.

By neutralizing the recording material 7, the adsorption force of the recording material 7 by the electrostatic adsorption belt 4 is increased, and the recording material 7 is conveyed while being securely brought into close contact with the electrostatic adsorption heald 4. be able to.

That is, since the recording material 7 is conveyed while being firmly attracted to the electrostatic adsorption heald 4 without being lifted from the heald 4, the recording material 7 is conveyed while being firmly attracted to the electrostatic adsorption heald 4. Can be transported through narrow gaps.

In FIG. 2, the conveyor heald 4 in the form of
On the downstream side, there are a heater 13 and a fan 14 for promoting drying and fixing of the direct image ink on the recorded recording material 7.
A fixing means having a fixing means is disposed, and a paper ejecting roller 15 for ejecting the recording material 7 to the outside of the apparatus main body is provided at the exit portion on the downstream side. A tray 16 is provided for sequentially loading the recorded materials 7.

The recording means (recording head) 1 is an inkjet recording means that discharges ink using thermal energy, and is equipped with an electrothermal converter for generating thermal energy.

The inkjet recording means 1 also performs recording by ejecting ink from an ejection port by utilizing pressure changes caused by growth and contraction of bubbles due to film boiling caused by thermal energy applied by the electrothermal converter. It is something.

The third part is a partial perspective view schematically showing the structure of the ink ejection section of the recording means I.

In FIG. 3, there is a thin film 2 on the substrate 21 of the recording means 1.
A plurality of electrothermal transducers 22 and corresponding wirings are formed by a manufacturing process similar to that for semiconductors (thin film molding method, etc.) with the layer No. 3 interposed therebetween.

As shown in the figure, the electrothermal converters 22 are arranged at positions corresponding to respective discharge ports and liquid paths, which will be described later.

On the substrate 21 (on the thin film 23 on the substrate 21),
A plurality of liquid channel walls 24A formed in parallel at predetermined intervals on the lower surface.
A liquid path forming member 24 having a shape is joined.

Furthermore, a top plate 25 is joined to the upper surface of the liquid path forming member 24.

A liquid path 26 is formed between each of the liquid path walls 24A, and the liquid path forming member 24 is positioned such that each electrothermal converter 22 is disposed at a predetermined position inside each liquid path 26. Positioned and joined in relation.

Each liquid path wall 24A has a predetermined length, and the rear end of each liquid path 26 is connected to a common liquid chamber 27 formed between the liquid path forming member 24 and the substrate 21 (or thin film 23). It is connected to.

On the other hand, the other #A (tip) of each liquid path 26 opens at a discharge port surface (face surface) 28 of the recording nozzle 1, and a discharge port 29 is formed by each opening.

In this way, the electrothermal transducer 22 such as a heating resistor is energized (applied with a pulse voltage) to generate heat, thereby film boiling the ink in the liquid path 26, and the pressure change at that time causes ink to flow from the ejection port 29. An inkjet type recording means (recording head) (2) for ejecting droplets is configured.

Note that the recording means 1 is mounted in such a manner that the arrangement direction of the plurality of ejection ports 29 intersects the conveyance direction of the recording material 7.

In the inkjet recording apparatus having the configuration shown in FIGS. 1 to 3, when the recording material 7 comes to a position facing each recording means 1, ink is ejected in accordance with an image signal to record an image. .

In this case, if the gap between the recording means 1 and the recording material 7 widens, the error in the ink landing point will increase, making it impossible to obtain good image recording.

On the other hand, if the above-mentioned gap is narrowed, if the recording material 7 floats from the heald 4 due to a decrease in the adsorption force of the electrostatic adsorption heald 4,
The recording material 7 comes into contact with the recording head 1, causing image defects and transportation defects.

That is, the electrostatic attraction force between the electrostatic attraction heald 4 and the recording material 7 has a great influence on the reliability and image quality of the recording apparatus.

By the way, in an inkjet recording device, when the ink is ejected, the main character adheres to the recording material 7 and forms an image, but the satellites that are generated when the ink is ejected become mist and are not absorbed by the device. It will float inside.

When this floating ink is generated, the belt 4 may become dirty or
Problems such as poor conveyance occur on the recording material guide surface 18 facing the recording means 1.

Furthermore, due to such a malfunction, the electrostatic adsorption heald 4
If an image is formed on the surface of the electrostatic chuck heald 4 or floating ink adheres to and accumulates on the electrostatic chuck heald 4, the ink is composed of water, solvent, dye, etc. , the electrical resistance of the heald 4 decreases, resulting in poor insulation, charge leakage, and the like.

Therefore, conventional methods have been used to clean the ink on the recording material guide surface 18 using a plate or an ink absorber, but since the conventional method only used a blade or an ink absorber, it was not possible to completely It was not possible to clean the ink, and the above-mentioned problem remained.

Therefore, in this embodiment, as shown in FIG. 1 and FIG. 31 and the waste ink receiver 32, a felt 33 impregnated with a liquid having a higher electrical resistance than the ink, such as silicone oil, is provided.

This felt 33 is attached to the recording material guide surface 1 of the conveyance heald 4.
8, and in the illustrated example, it is disposed on the downstream side of the plate 31 in the heald traveling direction.

The plate 31 and the felt 33 are rotatably supported by their holder arms around a fulcrum 34, and by rotating upward based on a predetermined control sequence, the recording material on the conveying heald 4 is moved. Information surface 18
The cleaning operation is performed by bringing the cleaning device into pressure contact with the cleaning device.

By using the felt 33 for leaning in this manner, it became possible to absorb and remove ink that could not be removed by the blade 31.

At the same time, when wiping with the felt 33, liquid with high electrical resistance adheres to the surface of the transport heald 4.
It has become possible to maintain the insulation properties of the recording material guide surface 18 of the conveyor belt 4.

Furthermore, since the felt 33 is used, the durability of the felt 33 can be improved by impregnating it with high viscosity silicone oil and cleaning it.

On the other hand, if a low viscosity oil is used, it is possible to prevent the curling phenomenon of the recording material 7 recorded with ink.

In this way, by cleaning and removing the ink adhering to the recording material guide surface 18 using a liquid with a different composition from the liquid (ink) used for image formation, the cleaning ability is improved and the reliability of the recording apparatus is improved. An inkjet recording device capable of improving image quality was obtained.

FIG. 4 is a longitudinal sectional view showing the configuration of a recording section and a conveyor belt of an inkjet recording apparatus according to another embodiment of the present invention.

In FIG. 4, a controllable voltage applying means 3
5 is connected, and the static eliminating mylar 19 is connected to J
9 Recorded material 7! The structure is such that this forced voltage can be applied.

The reason for providing the voltage applying means 35 will be explained below.

In a transport system that performs electrostatic adsorption, the direction of ink ejection may change due to the electric field formed by the charges on the transport heald 4.

For example, when positive charges are injected into the recording material guide surface 18 of the transport heald 4, negative charges are induced on the back surface (belt side) of the recording material 7, and positive charges are induced on the recording surface. Ru.

Therefore, in order to strengthen the adsorption force, the charges on the recording surface are removed using static-eliminating mylar I9.

However, as in the embodiment shown in FIG. 1, simply grounding the charge-eliminating Mylar 19 may not completely remove the charge on the recording material 7.

When ink is ejected onto the recording material 7 on which such charges remain, charges are also induced in the ink droplets.

Depending on this method of induction, for example, if the main force becomes negative and the opening becomes positive, the opening with a small inertial force will conversely cause the discharge port surface to
8 side, and eventually the ejection port 29 is clogged with ink, causing non-ejection or ejection failure.

Therefore, the configuration of this embodiment;
If the negative voltage is forcibly applied according to the magnitude of the positive charge on the recording material 7, the residual charge on the recording material 7 can be canceled out. , it is possible to eliminate the above-mentioned non-ejection and ejection failure.

In this case, the type and strength of the charge on the transport heald 4 are as follows:
Since the charge varies depending on the time and place, by controlling the voltage applied to the static-eliminating Mylar 19 according to the change in charge, the charge on the recording material 7 can be completely canceled out.

In this embodiment as well, since the felt 33 applies oil with high electrical resistance (low conductivity) to the conveyor belt 4, charge fluctuations due to local ink stains on the conveyor heald 4 can be suppressed. can.

Although the embodiment shown in FIG. 4 differs from the embodiments shown in FIGS. 1 to 3 in the points explained above, it has substantially the same structure in other parts, and therefore the corresponding parts are the same. They are indicated by reference numerals, and their detailed description will be omitted.

According to the embodiment shown in FIG. 4, in addition to obtaining the same effect as in the above-mentioned embodiment, a voltage is applied to forcibly cancel the electric charge on the conveyor belt 4 by the static-eliminating mylar ray 9, so that An inkjet recording apparatus was obtained in which the decrease in the adsorption force of the material 7 could be eliminated, and the reliability of the recording apparatus and image quality could be further improved.

FIG. 5 is a front view showing the main structure of an ink jet recording apparatus according to still another embodiment of the present invention, and FIG. 6 is a partial plan view showing the structure of the platen cleaner in FIG.

This embodiment shows a case where the present invention is applied to a serial scan type inkjet recording apparatus.

In FIG. 5, a recording head 41 as a recording means is
It is mounted on a carriage 42 that reciprocates in the width direction of the recording material 43.

The carriage 42 is movably guided and supported along a guide shaft 44, and is driven by a carriage drive motor 45.
As a result, it is reciprocated in the directions of arrows A and B via timing belts stretched around pulleys 46 and 47.

A platen (recording material guide surface) 50 is installed at a position facing the ejection port surface 49 of the recording means 41 for regulating the position of the recording surface of the recording material 43 with respect to the ejection port surface 49.

A registration roller 51 consisting of a pair of rollers is disposed on the upstream side of the platen 50 in the conveyance direction, and a conveyance roller 52 consisting of a pair of rollers is disposed on the downstream side of the platen 50 in the conveyance direction.

The registration roller 51 and the conveyance roller 52 are driven by a conveyance motor 534, and the recording material 43 is conveyed in the direction of arrow C by these rollers.

During recording, the recording material 43 is pitch-fed one line at a time, and while the recording material 43 is stopped, the carriage 42
The recording means 41 records while scanning the recording surface of the recording material 43.

Recording operation of the recording means 41, scanning movement of the carriage 42,
The rotation of the transport motor 53 is controlled by a control section 54.

Therefore, a platen cleaner 55 is attached to the carriage 42 for cleaning the surface 56 of the platen 500 (recording material guide surface).

This platen cleaner 55, as shown in FIG.
It includes a flexible blade 57 for wiping and cleaning the surface 56 of the platen 50, and a felt 58 impregnated with a cleaning liquid other than ink such as oil.

Arrow P in FIG. 6 indicates the direction in which the carriage 42 moves when cleaning the platen, and arrow Q indicates the direction in which the carriage 42 moves toward its home position.

Therefore, the felt 58 is disposed on the downstream side of the blade 57 in the direction of movement when cleaning the platen.

The blade 57 and the felt 58 are moved in the direction of contact with the platen 50 (arrow D) by an electromagnetic switch 59.
Holder 6 movable in the direction of separation (arrow E)
It is attached to 0.

That is, when the electromagnetic switch 7 and 59 are turned on based on a predetermined sequence, the holder 60 moves in the direction of the arrow Q2, and the blade 57 and felt 58 move toward the platen 50.
surface.

By moving the carriage 42 with the platen cleaner 55 in contact with the platen 50,
After wiping off the adhered ink on the platen surface 56 with a blade 57, oil is applied with a felt 58 to clean the platen surface 56.

After cleaning the platen surface 56, the electromagnetic switch 59
By turning off the holder 60 and retracting the holder 60, the blade 57 and the felt 58 are separated from the platen surface 56, and then the recording material 43 is fed and the recording operation begins.

According to this embodiment, by applying oil using the felt 58 as described above, the sliding resistance of the platen surface (recording material guide surface) 56 is reduced, and the recording material 4 is coated with oil.
We were able to eliminate conveyance defects such as getting stuck in item 3.

Further, since both the blade 57 and the felt 58 are brought into sliding contact, the cleaning effect of the platen surface 56 can be improved.

In addition, in this embodiment, the case where the oil-impregnated felt 58 is brought into sliding contact has been described, but the present invention is not limited to this. For example, instead of felt, a porous member, cloth, paper, etc. Various materials can be used as long as they can be impregnated with liquid such as oil.

Moreover, the shape and structure of the felt 58 can be implemented in various ways, such as making it into a roller shape or supporting it rotatably.

Note that the present invention provides a plurality of recording means (
color inkjet recording device equipped with a recording head),
It can be applied in the same way regardless of the number of recording means, such as an inkjet recording device that records with one recording means, or an inkjet recording device for gradation recording that uses multiple recording means with the same color but different density. It is possible to achieve the desired effect.

The present invention also relates to an inkjet recording device of a serial recording type in which a recording means (to and from recording) is mounted on a carriage that moves along a recording material, or the entire or part of the recording area in the width direction of a recording material. Regardless of the type of recording method, such as a line-type inkjet recording device using a line recording means having a length corresponding to , the present invention can be applied in the same way, and the same effects can be achieved.

Furthermore, the recording means (recording head) in each of the above embodiments may be a replaceable cartridge type recording means in which the recording head and ink tank are integrated, or a recording means in which the recording head and the ink tank are separate, for example. , recording means of structures coupled via couplers and tubes, etc.
Various configurations of recording means can be used.

The present invention can be applied to any inkjet recording device that uses a recording means (recording head) that uses an electromechanical transducer such as a piezo element. This brings about excellent effects in the bubble print type inkjet recording apparatus currently available.

This is because, according to such a system, higher recording density and higher definition can be achieved.

As for typical configurations and principles thereof, it is preferable to use the basic principles disclosed in, for example, US Pat. No. 4,723,129 and US Pat. No. 4,740,796.

This method can be applied to both the so-called on-demand type and the continuous type, but especially in the case of the on-demand type, it is difficult to adapt to the sheet holding the liquid (ink) and the liquid path. By applying at least one drive signal to the disposed electrothermal transducer that corresponds to the recorded information and causes a temperature increase that is quadrupling faster than nucleate boiling,
The electrothermal converter generates thermal energy, and the recording means (
This method is effective because film boiling is caused on the heat-active surface of the recording head (recording head), and as a result, bubbles in the liquid (ink) can be formed in one-to-one correspondence with this drive signal.

Due to the growth and contraction of these bubbles, liquid (
ink) to form at least one droplet.

When this drive signal is in the form of a pulse, the bubbles grow and contract immediately and appropriately, making the liquid especially responsive.
Ink) can be ejected, which is more preferable. As this pulse-shaped drive signal, those described in US Pat. No. 4,463,359 and US Pat. No. 4,345,262 are suitable.

Further, if the conditions described in US Pat. No. 4,313,124 concerning the temperature increase rate of the heat acting surface are adopted, even more excellent recording can be achieved.

For the record: In addition to the combination configuration of the discharge port, liquid path, and electrothermal converter (straight liquid flow path or right-angled liquid flow path) as disclosed in the above-mentioned specifications, U.S. Pat. No. 4,558,333 and U.S. Pat. No. 4,459, which disclose a structure in which the action part is arranged in a bending region.
A configuration using the specification of No. 0 is also included in the present invention.

In addition, Japanese Patent Application Laid-open No. 123670 of 1982 discloses a configuration in which a common slit is used as a discharge part for a plurality of electrothermal converters, and a hole absorbing pressure waves of thermal energy is disclosed. The present invention is also effective as a configuration based on Japanese Patent Application Laid-Open No. 138461 of 1981, which discloses a configuration in which the discharge portion is adapted to be recoated.

That is, regardless of the form of the recording head, according to the present invention, recording can be performed reliably and efficiently.

Furthermore, the present invention can be effectively applied to a full-line type recording head having a length corresponding to the maximum width of a recording medium that can be recorded by a recording apparatus.

Such a recording groove may be configured to satisfy the length by a combination of a plurality of recording heads, or may be configured as a single recording groove formed integrally.

In addition, even with the serial type shown above, the recording head is fixed to the device body, or by being attached to the device body, electrical connection to the device body and ink supply from the device body is possible. The present invention is also effective when using a replaceable chip-type recording head or a cartridge-type recording in which an ink tank is integrally provided in the recording head itself.

Further, it is preferable to add recovery means for the recording head, preliminary auxiliary means, etc., which are provided as a configuration of the recording apparatus, to the present invention because the effects of the present invention can be further stabilized.

Specifically, these include preheating of the recording throat by capping means, cleaning means, pressurizing or suction means, an electrothermal transducer or a separate heating element, or a combination thereof. It is also effective to perform a preliminary ejection mode in which ejection is performed separately from recording.

In addition, regarding the type and number of recording heads installed, for example, in addition to only one head for single-color ink, there are also multiple heads installed for recording multiple inks with different recording colors and densities. It may be provided.

That is, for example, the recording mode of the recording apparatus is not limited to a recording mode for only mainstream colors such as black, but also whether the recording head is configured integrally or by a combination of multiple heads.
Although any of these may be used, the present invention is also extremely effective for devices equipped with at least one of multiple colors of different colors or full colors created by mixing colors.

Additionally, in the embodiments of the present invention described above,
Although ink is described as a liquid, it is an ink that solidifies at room temperature or below, but softens or liquefies at room temperature, or in the inkjet method, the ink itself must be stored at a temperature of 30°C or higher and 70°C or lower. Since the temperature is generally controlled so that the viscosity of the ink is within a stable ejection range, it is sufficient that the ink is in a liquid state when the recording signal is applied.

In addition, the temperature increase caused by thermal energy can be actively prevented by using it as energy to change the state of the ink from a solid state to a liquid state. In any case, the ink used is one in which the ink is liquefied by applying thermal energy in response to the recording signal, and the liquid ink is ejected, or the ink has already begun to solidify by the time it reaches the recording medium. The present invention is also applicable when using ink that is liquefied only by thermal energy.

In such a case, the ink is held in a liquid or solid state in a porous notebook recess or through hole, as described in JP-A-54-56847 or JP-A-60-71260. It may also be configured to face the electrothermal converter.

In the present invention, the most effective method for each of the above-mentioned inks is to implement the above-mentioned film boiling method.

In addition, the ink recording device according to the present invention can be used as an image output terminal for information processing equipment such as a computer, a copying device combined with a reader, etc., and a facsimile device having a sending/receiving function. It may also take a certain form.

(Effects of the Invention) As is clear from the above description, according to the present invention, in an inkjet recording apparatus that performs recording by ejecting ink from a recording means onto a recording material, the position of the recording surface of the recording material with respect to the recording means The recording material guiding surface for regulating the temperature is cleaned using a liquid with a different composition from the ink, which improves the cleaning ability of the recording material guiding surface and improves the reliability of the recording device and the quality of recorded images. An inkjet recording device that can improve quality is provided.

According to another aspect of the present invention, in addition to the above structure, the recording material guide surface is formed by an electrostatic adsorption conveyance member that conveys the recording material, and a liquid having a higher electrical resistance than the ink is used to absorb the electrostatic charge. Since the suction conveyance member is configured to be cleaned, in addition to the above-mentioned effects, an inkjet recording apparatus is provided which can prevent a decrease in suction force due to a decrease in insulation of the recording material guide surface and prevent conveyance failures.

[Brief explanation of the drawing]

1 is a joint cross-sectional view showing a recording section and a conveyance means of an inkjet recording apparatus according to an embodiment 22 of the present invention, and FIG. 2 is a joint cross-section view of an inkjet recording apparatus equipped with the recording section and conveyance means of FIG. 1. 3 is a partially cutaway partial perspective view schematically showing the structure of the ink ejection section of the recording means in FIG. 1,
Part 4 is a cross-sectional view showing a recording section and a conveyance means of an inkjet recording apparatus according to another embodiment of the present invention, and FIG. 5 shows a recording section and conveyance means of an inkjet recording apparatus according to still another embodiment of the present invention. FIG. 6 is a partial plan view showing the recording means and platen cleaner in FIG. 5. Below, symbols representing main components in the drawings are listed. 1, IB, IC2IM, I Y---1 recording means (to record, do), 4---transport belt (electrostatic adsorption held),
7- Recording material, 11 = Registration roller, 17-.
- Charging roller, 18 - Recording material guide surface (conveyance heald surface), 19 Static neutralizing mylar, 22 - Electrothermal converter,
26- Liquid path, 28- Discharge port surface, 29- Discharge port, 31
- Blade, 33--Felt, 35--Voltage application means, 4I--Recording means (recording head), 42---Carriage, 43---Recorded material, 49---Ejection opening surface , 50 - platen, 54 =-=- control section, 55
- Platen cleaner, 56-1 recording material guide surface (platen surface), 57- blade, 58-1-- felt, 59-1, ii magnetic switch, 60 =- holder. Figure 3

Claims (4)

[Claims] (1) In an inkjet recording device that performs recording by discharging ink from a recording means onto a recording material, a recording material guide surface for regulating the position of the recording surface of the recording material with respect to the recording means is made of a material different from the ink. An inkjet recording device characterized in that cleaning is performed using a liquid. (2) A recording material guide surface is formed by an electrostatic attraction conveyance member that conveys the recording material, and the electrostatic attraction conveyance member is cleaned using a liquid having a higher electrical resistance than the ink. 1. The inkjet recording device according to 1. (3) A claim characterized in that the recording means is an inkjet recording means that ejects ink using thermal energy and is equipped with an electrothermal converter for generating thermal energy. Item 2. The inkjet recording device according to item 1 or 2. (4) The recording means is characterized in that the ink is ejected from the ejection port by utilizing a state change caused by the growth of bubbles due to film boiling caused by the thermal energy applied by the electrothermal converter. 3. The inkjet recording device according to 3.