JPH0485046A - Ink jet recorder - Google Patents

Abstract

PURPOSE:To prevent non-discharging with a simple structure without changing a shape of a contacting face of an absorber by providing drive means for pressing an absorbing face of ink absorb means to a contacting plane of ink squeezing means so as to discharge an ink absorbed by the ink absorb means. CONSTITUTION:When a front face of an opening 6b faces heads 1601a, 1601b, 1601c, 1601d, an idle discharging is carried out from each head to a recovery device 17 which is kept lowered. After the idle discharging, a squeezing mechanism 19 is rotated upward in the direction of an arrow W and an oscillating cam 14 rotates in the direction of an arrow C so as to push up the recovery device 17 in the direction of an arrow X. Absorbers 18a, 18b, 18c, 18d are pressed respectively in parallel on the bottom faces of grooves 19a, 19b, 19c, 19d in the squeezing mechanism 19, so that ink being absorbed is discharged. When the oscillating cam 14 further rotates, the recovery device 17 is lowered and the squeezing mechanism 19 returns to the lower part. Thereafter, an oscillating cam 13 makes the recovery device 17 go up so as to clean the heads and makes it go down, and the recording operation will be started again.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is used as an ink sheet recording device having functions such as a facsimile, a copying machine, and a printer, and as an output device such as a multifunction device and a workstation equipped with these functions. Regarding the inkshie soto recording device.

[Prior Art] Non-impact recording methods have recently attracted attention because the noise generated during recording is so small that it can be ignored. Among them, there is a possibility of high-speed recording,
Moreover, the inkjet recording method, which allows recording on so-called plain paper without requiring any specific fixing process, is an extremely powerful recording method.

The recording head commonly used in ink jet recording devices generally includes a fine liquid ejection opening (orifice), a liquid path, an energy acting part provided in a part of this liquid path, and a droplet forming device that acts on the liquid in the acting part. It is equipped with an energy generation means for generating energy.

Energy generating means for generating such energy include a recording method using an electromechanical transducer such as a Vieso element, a recording method using electromechanical transducers such as a Vieso element, and a method in which electromagnetic waves such as a laser are irradiated and absorbed into the liquid to generate heat, and the effect of the heat generated. A recording method using an energy generating means that ejects and flies droplets, or a recording method using an energy generating means that ejects a liquid by heating the liquid with an electrothermal converter such as a heating element having a heating resistor. There is. Among these, the recording head used in the inkjet recording method, which discharges liquid using thermal energy, has a high density array of liquid discharge ports (orifices) for discharging recording droplets to form flying droplets. It is possible to record with high resolution. Among these, a recording head that uses an electrothermal converter as a thermal energy generating means is easy to make the overall recording head compact, and is also compatible with ICs, which have seen recent technological advances in the semiconductor field and remarkable improvements in reliability. It is possible to take full advantage of the advantages of technology and micro-processing technology, and because it is easy to make it long and planar (two-dimensional), it is easy to make multi-nozzles and high-density packaging, and it is also possible to produce in large quantities. Good sex,
It is also possible to provide an inkjet recording head and an apparatus having the head that are inexpensive to manufacture.

In an inkjet recording device using a so-called multi-nozzle print head,
The multi-nozzle print head has a mechanism that ejects drying ink from fine nozzles, so it is difficult to thicken the ink,
Impurities in ink, thread waste generated from recording paper, etc.
It may become clogged due to dirt, dust, etc.
To prevent clogging, print head recovery processing is performed when clogging occurs or periodically.

The recovery process involves bringing a moist sponge member into contact with the recording head surface, pulling it away, and then squeezing the moist sponge member from a direction perpendicular to the recording head contact direction using a squeezing mechanism to discharge ink. The edges can be turned over and used.

[Question to be solved by the invention] The above-mentioned conventional ink sheet recording device discharges ink from an ink absorber using a moist sponge member.
Since the ink absorber is squeezed from a direction perpendicular to the direction of contact with the recording head, the mechanism is complicated and generates a lot of noise.Also, the ink that has been squeezed out once is absorbed into the ink absorber again at the same time as the squeezing operation ends. When the ink absorber comes into contact with the recording head surface, the ink droplets on the surface cannot be removed reliably, leading to non-ejection, and the ink absorber is compressed from the perpendicular direction, so the contact surface of the ink absorber to the recording head is curved. If the ink absorber is deformed and used with its edges turned over, there are problems such as fatigue of the ink absorber, which causes the portions that do not come into contact with the recording head to remain intact, resulting in non-ejection.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, it is an object of the present invention to provide an ink sheet recording device that uses a simple mechanism and does not deform the contact surface of an ink absorber and does not cause ejection failure.

[Means for Solving the Problems] The inkjet recording device of the present invention has an inkjet type multi-nozzle print head having a recording paper image width arranged perpendicularly to the recording paper conveyance direction, and In an inkjet recording apparatus having a rotationally driven cylindrical paper suction conveyance means that is longer than a recording width at an opposing position, the recording paper suction conveyance means is provided at a predetermined position so as to face the multi-nozzle print head. an opening provided in the recording paper adsorption/conveying means, configured to be reciprocally movable toward the multi-nozzle print head when the opening faces the multi-nozzle print head, and facing the multi-nozzle print head; an ink absorbing means serving as an absorbing surface; and an ink absorbing means provided in the recording paper suction conveyance means, movable between the multi-nozzle print head and the ink absorbing means, and in contact with the absorbing surface of the ink absorbing means. an ink squeezing means having parallel abutting planes; and when the opening of the recording paper suction and conveyance means is opposed to the ink absorption means, the ink absorption means is pressed against the multi-nozzle print head, and the multi-nozzle At the same time as the print head is recovered, the ink squeezing means is moved between the multi-nozzle print head and the ink absorption means that has been retreated from the multi-nozzle print head, and the ink absorption means is brought into contact with the ink squeezing means. and a driving means for pressing the absorbing surface and discharging the ink absorbed by the ink absorbing means.

``Function'' By driving the driving means, the ink absorbing means or the absorbing surface is pressed against the multi-nozzle print head to recover the ink ejection surface of the multi-nozzle print head, and the ink absorbing means that has absorbed ink through recovery processing or dry ejection The absorbing surface is pressed against the contact plane of the ink squeezing means that has moved in front of the multi-nozzle print head to discharge the absorbed ink.

[Example] Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram illustrating an ink supply system to a long recording head that is a multi-nozzle print head of an inkjet recording apparatus of the present invention, and FIG. 2 is a diagram showing in detail the mechanical part of the first embodiment of the present invention. Configuration diagram, Figure 3 (a), (b)
, (c) is a diagram showing the suction cylinder in detail, and Figure 4 (
a) and (b) are diagrams showing details of the vicinity of the head, and FIG. 5 is a diagram showing the ink squeezing operation of the mechanical part shown in FIG. 2.

First, the ink supply system will be explained with reference to FIG.

The recording head] 601 is supplied with recording liquid (ink) from a supply liquid chamber 1652 and has an ejection port 1653 for ejecting liquid arranged on a recording liquid ejection surface 1654. Discharge port 165
Numerals 3 and 3 selectively drive heat-generating elements provided in liquid paths (not shown) leading to the individual ejection ports 1653, whose numbers are arranged all over the recordable width of the target recording material. This makes it possible to eject the recording liquid and perform recording without moving or scanning the head itself.

An example of a recording head will now be described with reference to FIG. 6. This recording head is manufactured through semiconductor manufacturing process steps such as etching, vapor deposition, and sputtering.
Electrothermal converter 1103 and electrode 11 formed on 2
04, a liquid path wall 1105, and a top plate 1106. The recording liquid 1112 is supplied into the common liquid chamber 1108 of the recording head 1101 from a liquid storage chamber (not shown) through a liquid supply pipe 1107. In the figure, 1109 is a liquid supply pipe connector. The recording liquid 1112 supplied into the common liquid chamber 1108 is supplied into the liquid path 1110 by a so-called capillary phenomenon, and is stably held by forming a meniscus at the discharge port surface (orifice surface) at the tip of the liquid path. By energizing the electrothermal converter 1103, the recording liquid on the surface of the electrothermal converter is rapidly heated, bubbles are generated in the liquid path, and the bubbles expand and contract at the discharge port 11.
Recording liquid is ejected from 1 to form droplets. With the above-described configuration, it is possible to perform multi-nozzle inkjet recording with a high-density ejection port arrangement such as 16 nozzles/mm, 128 ejection ports or 256 ejection ports, or even multi-nozzle inkjet recording in which ejection ports are arranged over the entire recording width. Head can be configured.

Now, the above-mentioned recording liquid is supplied to the recording liquid supply link 16 in FIG.
55 and is supplied to the recording head 16 through a common liquid chamber 1652. Main tank l656 is supply tank 16
55 with recording liquid. The recording liquid is supplied from the supply tank 1655 to the common liquid chamber 1652 of the recording l\jit 6 old via the supply pipe 1657, and when the recording liquid is refilled, the one-way replenishment rectifier valve 1 is supplied from the main tank 1656.
The supply tank 1655 can be replenished with recording liquid via the recovery pump 1659 via the recovery pump 1659 . Further, the one-way recovery rectifier valve 1660 is used during a recovery operation to recover the ejection function of the recording head '1601. The circulation vibrator 1661 connects the recovery rectifier valve 1660 to the common liquid chamber 16.
Connect to 52. Furthermore, the solenoid valve 1662 is attached to the supply pipe 1657 mentioned above, and the air vent valve 1663
is for exhausting the supply tank 1655.

In the recording head 1601 and its recording supply system and recovery system configured in this way, when recording is performed, the solenoid valve 16
62 is kept in an open state, and recording liquid is replenished from the supply tank 1655 to the common liquid chamber 1652 by its own weight, and from the liquid chamber 1652 to the discharge port 16 via a liquid path (not shown).
53. In addition, during a recovery operation performed to remove air bubbles remaining in the common liquid chamber 1652 and the supply system and to cool the recording head 1601, the recovery pump 1659
can be driven to send the recording liquid into the common liquid chamber 1652 through the circulation pipe 1661, and return the recording liquid from the common liquid chamber 1652 to the supply tank 1655 through the first supply pipe 1657 for circulation. Furthermore, when initially filling the liquid path, etc., the pump 1659 is turned on with the solenoid valve 1662 closed.
The recording liquid is transferred to the common liquid chamber 165 through the circulation pipe 1661.
2, and the recording liquid (hereinafter referred to as ink) can be ejected from the ejection port 1653 at the same time as the air bubbles are discharged.

Normally, such a recording head is left with ink remaining inside the ink ejection openings when not recording. A capping means having a bondable cap is provided on the ejection port surface or the ejection port side of the print head, and when not printing, by bonding the cap and the print head, the print head is covered with a lid, so to speak. The ink liquid in the liquid path is sealed off from the surrounding atmosphere, and the air layer at the joint is filled with ink vapor to bring the space formed by the cap and the recording head to the saturated vapor pressure of the ink. This prevents the viscosity from increasing and the ink in the liquid path from drying out. However, in low-humidity environments or when recording is stopped for a long period of time, the viscosity of the ink may increase even if you perform character pinking as described above to prevent the ink from evaporating in the liquid path. In some cases, it may be impossible to prevent ink from being ejected from the ejection ports or from being ejected unstablely when printing is restarted after a printing pause period. In the present invention, the problem of whether or not to eject ink for the first time after a pause is hereinafter referred to as the "issue problem." To solve this problem, as described above, the recovery pump 1659 is driven to circulate and pressurize the ink, and an ink circulation and pressure means is also used to discharge the ink from all the ejection ports of the recording head. There is.

In addition, in the case of the above-mentioned non-ejection state or a slight one, the entire energy generating means of the head is driven to perform an ink ejection operation similar to that for recording on paper or the like. Since this is not ejection for recording an image, it is hereinafter referred to as "dry ejection" in the present invention.

As mentioned above, if the ink dries out due to being left in a non-recording state for a long time and its viscosity increases and it becomes stuck in the ejection port and/or liquid path, pressurized circulation of the ink will cause the ink to become non-recording again. In a relatively short period of time, if the stuck state is slight, the head is restored to a state capable of printing by performing a blank ejection operation.

A recording member suitably used in this embodiment will be described.

The inksheet recording method is a method in which small droplets of a recording liquid called ink are ejected and are attached to the surface of a recording paper such as paper for recording. It is necessary that the image does not become blurry. In addition, the ink adhering to the recording member is quickly absorbed into its interior, and there is no phenomenon of ink flowing out or seeping, especially when ink of different colors is adhering to the same spot repeatedly within a short period of time. It is preferable that the print dots have such characteristics that the width of the printed dots can be suppressed to a level that does not impair the brightness of the image quality. These characteristics may not be fully satisfied with copy paper called plain paper used in electrophotographic copying machines and other paper used as general recording paper. When printing with only one color or overlapping two colors on these papers, it is often possible to obtain a somewhat satisfactory image quality, but for example, when printing a full-color image by overlapping three or more colors of ink, When the amount of ink that adheres to the paper increases, it may not be possible to record a sufficiently satisfactory image quality.

In the inkjet recording apparatus of this embodiment, as a paper that satisfies the above-mentioned characteristics, a coach ink (for example, a finely powdered silicic acid powder that can obtain the above-mentioned characteristics) is coated on a base paper, such as that disclosed in JP-A-56-148583. ) is preferably used. The ink is applied to the coach ink surface of the recording member. Therefore, in this embodiment, in order to record a higher quality image, coated paper is used when recording an image using ink of three or more colors, and coated paper is used when recording an image using ink of one or two colors. I try to select and use non-coated paper (paper that is not coated as described above). However, it is perfectly acceptable to record images using coated paper using one or two color inks.

Next, the most characteristic components of the present invention will be explained with reference to FIGS. 2 to 5.

Each of the storage cases 61 and 62, which respectively stores the recording paper 1, is removably attached to the header 60 of the inkjet recording device, and each big roller 2 stores the recording paper 1.
are sent out sequentially starting from the top.

Each separation roller 3 is a pair of two rollers, and when a plurality of recording sheets 1 are sent out by the big roller 2, they are separated and sent out one by one.

The registration rollers 4 are made up of two rollers or a pair, and when a sensor (not shown) detects the recording paper 1 sent out from the separation roller 3 in front of the registration rollers 4, the recording paper 1 is temporarily stopped. let

Further, the registration roller 4 moves the recording paper 1 stopped once.
is sent out at a certain timing, and at the same time the ink x
cut recording head 16C11a, 1601bj601c.

1601d (Hereafter head +601a, 1601b,
(denoted as +601c and +601d) is determined and sent out to the suction cylinder. The suction cylinder whose surface is made of an insulating layer rotates around the rotation shaft 29 while being electrostatically charged by the charging roller 52 . The suction roller 5 picks up the recording paper 1 sent from the registration roller 4.
is pressed onto the suction cylinder cylinder 6 to be absorbed by the suction cylinder cylinder. Heads 1601a, 1601b, 1601c.

1601d forms an image by discharging black, cyan, magenta, and yellow inks, respectively, onto the recording paper 1 that is attracted and conveyed by the suction cylinder according to instructions from a control device (not shown). head 1601a,
16(llb, +601c, 16(IM) The recording paper 1 on which an image has been formed is further conveyed by the suction cylinder. At this time, the leading edge of the recording paper 1 is positioned so as to overlap the separation part 6a of the suction cylinder 6. Since the separation claw 23 is set downward in the direction of the arrow E, the recording paper 1 is peeled off from the suction cylinder 6 by the separation claw 23 and sent to the paper discharge roller 24 side.

When the suction cylinder 6 from which the recording paper 1 has been removed rotates, the plate 11 supported by a V-shaped plate support 12 cleans its surface, and if there is unnecessary ink on the surface, it cleans it. The ink is collected and sent to a waste ink tank (not shown) through the guide hole 12a.

The support body 8 is rotatably supported on a fulcrum 9a, holds the absorbent body 7 at its north end, and its lower end is pulled by a splinter 10 fixed to one end or a fulcrum 9C, and is prevented from rotating by a fulcrum 9b. There is. Since the absorber 7 is urged by the splinter 10 so as to be in contact with the surface of the suction cylinder 6 and to face the rotational direction of the suction cylinder 6, the surface of the rotating suction cylinder 6 can be stably cleaned.

Figure 3 (a), (b) about adsorption cylinder
This will be explained with reference to (c). First, as shown in FIG. 3(a), cylinder flanges 6c are provided at both ends, and holes 6d are provided in the cylinder flanges 6c.

This hole 6d has a head J60] aj601b, +60I
A bottle (not shown) attached to the head holder 35 to which the cylinders c and +601d are attached is inserted to determine the positional relationship between the head and the cylinder 6 in the longitudinal direction. The rotational drive of the suction cylinder 6 is shown in Fig. 3(b).
As shown in FIG.
50b and 50c.

Further, when the opening 6b shown in FIG. 3(a) comes to face the head, the head recovery operation is performed. Also, heads 1601a, 1601b, and 1601c.

The relative position of +601d relative to the suction cylinder 6 is determined by the positioning roller 51 rotatably supported by the head holder 35 coming into contact with the flange 6C, as shown in Fig. 3(c). ing. Inside the suction cylinder 6, there are a swing cam 13, 14 and an aperture mechanism 19 that are rotatably supported independently around a fulcrum provided coaxially with the rotation shaft 29, and a diaphragm mechanism 19 that extends in the direction of arrow F. A recovery system device 17 that is held movably up and down, and a recovery system device 17
A discharge tube 15 that guides the waste ink collected in the tank to a waste ink tank (not shown) and a stopper 16 that defines the lower limit of the recovery system device 17 are respectively provided. Furthermore, there is a plate support 21 that rotates together with the suction cylinder 6 and is movable in the direction of arrow M, and a head plate 22 held by the plate support 21 (see FIG. 4(a)). Further, each head 160]a, 1601b, 1
Recovery absorber +8a, 1 corresponding to 601c, 1601d
8b, 18c, and 18d are provided.

Further, on the head 60, there is a fan housing 27 to which a guide fan 25 is attached, and heads 1601a, 16.
01b, 1601c, 1601d are attached to the head holder 35, and heads 1601a, 1601b, 16
01c.

Ink tanks 26a and 2 supply each color ink of black, cyan, magenta, and yellow to 1601d, respectively.
The tank housing section 26 containing the tanks 6b, 26c, and 26d is arranged so that they can be opened in the direction of arrow P centering on the fulcrum 28, either independently or together.

Head 1601a attached to head holder 35.

1601b, 1601c, and 1601d have a key that covers the tip of each head when not recording. ”/Bu30a, 30b, 30c
, 30d is installed.

Next, the operation of the first embodiment will be explained.

When the operation starts, recording paper 1 or pickup roller 2,
The paper is fed by the separation roller 3, reaches the registration roller 4, and stops. In parallel with this, the key of each head? whelk 3
0a, 30b, :lOc, 30d or arrow Na.

Nb, Nc, Nd (see Fig. 2) move upward and the caps of each head are released, and each head 1601a
.

1601b, 160]c, and 1601d are made ready for ejection.

The suction cylinder 6 starts rotating in accordance with the transport timing of the registration roller 4, and at the same time, the ejection timing of each recording head is determined.

The suction cylinder 6 is charged by the charging roller 52 and attracts the recording paper 1 that has entered through the suction roller 5 onto its surface. At this time, the leading end of the recording paper is positioned so as to overlap the separating section 6a of the suction cylinder 6. As the suction cylinder 6 rotates and the image formation progresses sequentially by the recording head, the separation claw 23 is initially directed in the downward direction of the arrow E, so the recording paper 1 is peeled off from the suction cylinder 6 and removed by the paper ejection roller. It is discharged outside the device. At this time, the separation claw 23 is located a predetermined amount in front of the rear end of the recording paper 1.
It is released in the upward direction of arrow E (see FIG. 2).

After the recording paper 1 has been separated, the suction cylinder 6 continues to rotate and is cleaned by the blade 11 and the absorber 7.

At the initial recording operation, the opening 6 of the suction cylinder 6
The tip of b approaches the spatula FI601a and the head plate 2
2 comes between the head 1601a and the suction roller 5, the head blade 22 is moved upward in the direction of arrow M (see FIG. 4(a)), and as the suction cylinder 6 rotates, the heads 1601a, 1601b, 1601c are moved.

The ejection surface of 1601d is sequentially cleaned. opening 6b
The front or head 1601a, 1601b, 1601c,
1601d, the swing cam 13 rotates in the direction of arrow B (see FIG. 2) and pushes up the recovery system device 17, causing the recovery absorbers 18a, 18b, 18c, and 18d to move toward the heads 1601a, 1601b, and 1601b, respectively. 1601c, 16
01d (Fig. 2). After empty discharge is performed from each pressed head, the swing cam 13 rotates again, the throttle mechanism 17 descends, and the suction cylinder 6 starts rotating again.

At times other than initialization, the front of the opening 6b is the head +6
01a, 1601b, 1601c, and 1601d, empty discharge is performed from each head to the recovery system device 17, which remains lowered. After empty discharge is performed, the diaphragm mechanism 19 is rotated upward in the direction of arrow W (see FIG. 2),
The swing cam 14 rotates in the direction of arrow C (FIG. 2) and pushes up the recovery system device 17 in the direction of arrow X (FIG. 5). Absorber 1
8a, 18b, 18c, +8d are the aperture mechanism 1, respectively.
9 are pressed parallel to each other by the bottom surfaces of 19a, 19b, 19c, and 19d (Fig. 5), and the absorbed ink is discharged. When the swing cam 14 further rotates, the recovery system device 17 descends, and the throttle mechanism 19 returns downward. After that, the swing cam 13
Alternatively, the recovery system device 17 is raised to clean each head, and then lowered to restart the recording operation.

In this embodiment, the rocking cam 13 , 14 and the throttle mechanism 19 may be rotated independently, or, for example, the rocking cam 13 and the throttle mechanism 19 may be simultaneously driven by the rotary shaft 29 . It's okay. In addition, the absorber 18a
, +8b, 18c, and +8d may be discharged during the recording operation.

Furthermore, heads 1601a, 1601b, +601c, 1
601d is almost parallel (in the figure, it is shown with a large inclination for explanation), so the recovery system device 17 is integrated to simplify the mechanism, but an independent device is provided for each head. It is clear that it is good.

The present invention particularly applies to the bubble-shet type recording head proposed by Canon II among ink-shet recording types.
This provides excellent effects in recording devices.

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. Is this method applicable to both the so-called on-demand type and continuous type? In particular, in the case of the on-demand type, the liquid (ink) is arranged in correspondence with the sheet holding the liquid or the liquid path. The electric heat exchanger that
By applying at least one drive signal corresponding to recorded information and providing a rapid temperature rise above nucleate boiling, the electrothermal transducer generates thermal energy to cause film boiling on the thermally active surface of the recording head. This is effective because, as a result, a pair of bubbles can be formed in the ink, which is the recording liquid, in response to this drive signal.

The growth and contraction of the bubble causes ink to be ejected through the ejection opening to form at least one droplet. It is more preferable to use a pulsed drive signal as this drive signal, since bubble growth and contraction can be carried out immediately and appropriately, and ink ejection with particularly excellent responsiveness can be achieved. This pulse-shaped drive signal is described in US Pat. No. 4,463,359 and US Pat.
345262 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.

The configuration of the recording head includes, in addition to the combined configuration of ejection ports, liquid paths, and electrothermal converters (straight liquid flow path or right-angled liquid flow path) as disclosed in the above-mentioned specifications, a heat acting section. U.S. Pat. No. 4,558,333 and U.S. Pat. No. 4,559,600 disclose arrangements in which the bending region is located.
The structure described in each specification may be used. In addition, Japanese Patent Laid-Open No. 12 of 1981 discloses a configuration in which a common slit is used as a discharge part of a plurality of electrothermal converters.
No. 3670 and Japanese Unexamined Patent Application Publication No. 13 of 1981, which discloses a configuration in which a discharge portion is provided with an opening that absorbs pressure waves of thermal energy.
The present invention is also effective with a configuration based on the No. 8461 publication.

The present invention uses these recording heads as a full-line type recording head having a length corresponding to the width of the maximum recording medium that can be recorded by the recording apparatus, and as disclosed in the above-mentioned specification. By combining a plurality of recording heads, either a configuration that satisfies the length or a configuration as a single recording head formed integrally may be used, and the above-mentioned effects can be more effectively exhibited.

In addition, there are also replaceable chip-type recording heads that can be attached to the device body to enable electrical connection to the device body and supply of ink from the device body, or they can be installed integrally with the recording head itself. The present invention is also effective when a cartridge type recording head is used.

Further, it is preferable to add recovery means, preliminary auxiliary means, etc. for the recording head, which are provided as a configuration of the recording apparatus of the present invention, because the effects of the present invention can be further stabilized. Specifically, these include preheating means for the recording head using a cabin ink means, a cleaning means, a 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 printing in order to perform stable printing.

Furthermore, in the embodiment, the recording mode of the recording apparatus is not limited to a recording mode of only a mainstream color such as black (the recording head may be configured integrally or a combination of multiple colors), but also a recording mode of multiple colors of different colors. The present invention is also extremely effective for devices equipped with at least one of the full colors described above or mixed colors.

In the embodiments of the present invention described above, the ink is explained as a liquid, but it is also possible to use an ink that solidifies at room temperature or below, then softens or becomes a liquid at room temperature, or numerically in an ink sheet. It may be one that becomes soft or liquid within a temperature range of 30° C. or higher and 70° C. or lower, which is the temperature range for temperature adjustment. That is, any material that is in the form of ink or liquid when the recording signal is applied may be used. In addition, it is possible to actively prevent temperature rise due to thermal energy by using it as energy to transform the ink from a solid state to a liquid state, or to use ink that solidifies when left in order to prevent ink evaporation. However, in any case, there are some types of ink that are liquefied and ejected as liquid ink by applying thermal energy in accordance with the recording signal, and other types that have already begun to solidify by the time they reach the recording medium. It is also possible to use ink that is liquefied only by thermal energy. In such a case, the ink may be ink as described in Japanese Patent Application Laid-Open No. 54-56847 or Japanese Patent Application Laid-Open No. 60-71260.
The porous sheet may be held as a liquid or solid in the recesses or through-holes of the porous sheet, and may 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.

[Effects of the Invention] As explained above, the present invention performs recovery processing by pressing the ink absorption means or a flat absorption surface against the multi-nozzle print head, and also removes ink absorbed by the absorption means during the recovery processing and dry ejection. By pressing the absorbing surface against the contact plane of the ink squeezing means and discharging it, a simple mechanism can be realized without impairing the flatness of the absorbing surface, and the effect is that it can realize a noise-free and compact device. There is.

[Brief explanation of the drawing]

FIG. 1 is a diagram illustrating an ink supply system to a long recording head that is a multi-nozzle print head of an inkjet recording apparatus of the present invention, and FIG. 2 is a diagram showing in detail the mechanical part of the first embodiment of the present invention. Configuration diagram, Figure 3 (a), (b)
, (c) is a diagram showing details of the suction cylinder, respectively;
4(a) and 4(b) are views showing details of the vicinity of the head, FIG. 5 is a view showing the ink squeezing operation of the mechanical part shown in FIG. 2, and FIG. 6 is an example of an ink jet recording head. FIG. 1...Recording paper 2...Pickup roller 3...Separation roller 5...Adsorption roller 6a...Separation section 6c...Cylinder franchisor d...Hole 8...Absorber supporter DESCRIPTION OF SYMBOLS 10... Spring 12... Blade support 15 -... Discharge tube 6... Adsorption cylinder 4... Registration roller 6b... Opening a, 18... Absorber 9a, 9b, 9 c - Fulcrum 11... Plate 13.14 - Swing cam 16... 17... Recovery system devices 18a, 18b, 18c, 18d - Recovery absorber 19.
...Aperture mechanism! 9a, 19b, +9c, +9d - 22... Head plate 23... Separation claw 24... Paper ejection roller 26
...tank storage parts 26a, 26b, 26c, 26d---ink tank 27...fan storage part 28...fulcrum 29...
Rotating shafts 30a, 30b, 30c, 30d - Cap 35...
Head holder 51... Positioning roller 60... Heath 61.6
2 = Storage cases 1601a, 1601b, 1601c, 1601d--
- He-t.

Claims (1)

[Claims] 1) An inkjet type multi-nozzle print head having a recording paper image width is disposed perpendicular to the recording paper conveyance direction, and a cylindrical ink jet type having a length longer than the recording width is placed at a position facing the multi-nozzle print head. In an inkjet recording apparatus having a rotationally driven recording paper suction conveyance means, an opening provided at a predetermined location of the recording paper suction conveyance means so as to face the multi-nozzle print head; an ink absorber provided therein, capable of reciprocating in the direction of the multi-nozzle print head when the opening faces the multi-nozzle print head, and having a flat absorption surface facing the multi-nozzle print head; means provided in the recording paper suction and conveyance means, movable between the multi-nozzle print head and the ink absorbing means, and having an abutting plane parallel to and capable of coming into contact with the absorbing surface of the ink absorbing means. an ink squeezing means having an ink squeezing means; when the opening of the recording paper suction conveyance means faces the ink absorption means, the ink absorption means is pressed against the multi-nozzle print head to recover the multi-nozzle print head; The ink squeezing means is moved between the multi-nozzle print head and the ink absorption means that has been retreated from the multi-nozzle print head, and the absorption surface of the ink absorption means is pressed against the contact plane of the ink squeezing means. An inkjet recording apparatus comprising: a drive means for discharging ink absorbed by the inkjet recording apparatus. 2) The inkjet according to claim 1, wherein each print head of the multi-nozzle print head ejects ink from an ejection port using thermal energy, and has an electrothermal converter as a means for generating thermal energy. Recording device.