JPH03101947A - Ink jet recorder - Google Patents

Abstract

PURPOSE:To keep a positional relation between a paper discharge roller and a rowel spur invariably constant by a method wherein a cover member is used as a support member supporting the rowel spur for applying a pressing force to the paper discharge roller, and the cover member is pressed in a predetermined direction. CONSTITUTION:A shaft 61A supports a rowel spur 61 and provides a pressing force of the rowel spur 61 against a paper discharge roller 60 by its bending elastic force. An inner cover 103 is provided with a spring member 103A at the rear end thereof and receives the pressing force to the paper discharge roller by the reaction with a case 101. The interaction of this pressing force with the elastic force of the rotating shaft 61A allows the rowel spur 61 to apply a proper pressing force to the paper discharge roller 60. The application of the pressing force to the inner cover 103 ensures the engagement of a fixing member 103D of the inner cover 103 with a rotating shaft 60C of the paper discharge roller 60. As a result, a positional relation between the rowel spur 61 and the paper discharge roller 60 is kept invariably constant. Alternatively, an accurate relation can be maintained regardless of the accuracy of the inner cover by securely abutting the inner cover against such a member engaging with the rotating shaft 60C.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an inkjet recording device. [Prior Art] This type of apparatus includes, in addition to the configuration related to direct recording, a configuration specific to a method of recording by ejecting ink.

In other words, depending on the recorded data, if a certain ejection port does not eject for a long time, or if the device itself is not used for a long period of time, the ink in the ejection port or the ink chamber communicating with the ejection port may increase due to water evaporation. In addition, ink droplets, water droplets, dust, etc. may adhere to the ejection port surface where the ejection port is installed, and the ejected ink droplets may be pulled by these deposits, causing The discharge direction may also be deflected. For this reason, inkjet recording devices
In order to prevent ejection failure or deflection of the ejection direction, various configurations are provided as a so-called ejection recovery system.

These ejection recovery systems are configured to prevent ejection failures, including preliminary ejection to eject ink onto a predetermined ink-receiving medium to remove thickened ink, and suction of ink from ejection ports and ink chambers. Ink suction to remove the above.
Furthermore, there are capping configurations for sealing the ejection port surface and preventing ink moisture from evaporating from the ejection port.

Further, as a structure for preventing deflection of the ejection direction, there is a structure in which the ejection port surface is wiped to remove dust, ink droplets, etc. adhering to the vicinity of the ejection port.

Furthermore, in recent years, it has become common for inkjet recording apparatuses to be able to record on various recording media such as plain paper envelopes, and are designed to accommodate the particular thickness of these recording media.

That is, a mechanism is provided that adjusts the distance between the recording head and the recording medium so that the distance between the recording head and the recording medium is appropriate during recording, depending on the recording medium used.

On the other hand, in recent years, inkjet recording devices, particularly recording heads, have been manufactured using semiconductor film forming processes and microfabrication techniques, and smaller and cheaper recording heads are being realized. This results in
For example, a disposable type recording head with an integrated ink tank has also been proposed.

Along with this, there is a demand for an inkjet recording apparatus that is compact and inexpensive, and that is easier for users to use.

This is something that should be avoided. The present invention has been made mainly based on this point of view, and an object of the present invention is to apply a pressing force to the paper ejection roller with a lid member for covering the inside of the device when the device is not in use. To provide an inkjet recording device which is used as a support member for a spur for a paper discharge roller and which can maintain a constant positional relationship between a paper discharge roller and a spur by biasing this lid member in a predetermined direction. It is in.

[Problems to be Solved by the Invention] However, miniaturization of such a device requires that the space for the arrangement or operation of the members constituting the device is limited, and that the members themselves are made smaller. As a result, each of the above-mentioned configurations, as well as other configurations of the device and related mechanisms between these configurations, need to be different from those of relatively large devices.

From the above point of view, it is necessary to consider configuring the members or mechanisms constituting the apparatus to serve other functions [nN].To this end, in the present invention, it is necessary to An inkjet recording apparatus comprising: a paper ejection roller; and a spur for generating a recording paper conveyance force applied to the paper ejection by applying a pressing force to the paper ejection roller through the recording paper; a movable member that rotatably supports a spur and is movable relative to the device; and a portion C that can come into contact with a portion of the movable member and has a fixed positional relationship with the shaft of the paper ejection roller. The present invention is characterized by comprising a positioning member provided therein, and a pressing means for pressing the movable member against the positioning member through the abutment. More preferably, the moving member is a lid member for covering the inside of the device.

[Operation] According to the above configuration, the movable member that pivotally supports the spur comes into contact with the positioning member with a pressing force, so that the positional relationship between the spur and the paper discharge roller is always constant.

(y or 'F4t color) [Examples] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an external perspective view of an inkjet recording apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of the main parts of the apparatus shown in FIG. 1 excluding the case, etc., and FIG. 3 (A) and (B) are also diagrams mainly showing the paper ejection system of the apparatus shown in FIG. 1.

In FIG. 1, 100 indicates an inkjet recording device, and this device 100 is used when it is placed as shown in the figure, and when it is placed vertically as described later.
It is used in some cases, and is relatively small. 101 is a device case, 102 is an outer lid, and 103 is an inner lid. When not in use, the outer i 102 is superimposed on the inner ii 103, making the device 100 compact.

This allows the user to carry the recording device, for example, by putting it in a dedicated storage bag.

In addition, the outer M102 can also be used as a paper feed guide for the recording paper 40 as shown in the figure.
06 is the paper feed port. Further, the outer lid 102 can also be used as a paper discharge tray as described later.

In any of the above cases, reference numeral 107 in the figure serves as a paper discharge port.

105 is a hook for fixing the position of the upper lid 102, and 104 is an operation key. This is a display section, etc.

Next, the configuration of the main parts of the apparatus will be explained with reference to FIG.

In the figure, 1 is a chassis, and a left side plate 1a and a right side plate 1b, which also serve as guides for recording media such as paper, are erected on the rear side. Further, the chassis 1 is provided with a motor mounting hole for rotatably supporting a carrier motor, which will be described later, but is not shown.

th is a lead arm that supports a lead screw, which will be described later, in the axial and radial directions, and includes a bearing part (not shown).
It is pivoted on.

2 is a lead screw, and a lead 112a is shaped with a predetermined bit opposite to the recording range. Also, on the carrier home position side of lead screw 2,
A position groove 3b for setting the position of the cap and discharge recovery is formed along a cross section perpendicular to the screw axis. Furthermore, lead groove 28 and position? m3b and Haedamanman 3C are smoothly continuous. A shaft 2g is provided at the right end of the lead screw 2, and a shaft is also provided at the left end, and each of them is connected to the front plate 1.
c and lead arm lb, and is rotatably supported thereto. Reference numeral 3 denotes a lead bobbin which includes the grooves 3b and 3c and is provided on the shaft of the lead screw 2, and a bobbin 3a is provided at the end of the lead bobbin. The driving force is then transmitted to the pulley 3a from the engine 1l via the timing belt l3. Further, the shaft 2g on the right end side of the lead screw 2 is slidably engaged with the groove of the guide plate IC connected to the chassis right side plate 1b and the chassis 1, and is pushed in the thrust direction by the holding part 10a of the leaf spring 10. While being pressed, the rough shaft 2g engages with a cam mechanism of a cam groove plate 50a rotatably supported by a shaft provided on the guide plate 1c. Cam groove plate 50a
There are interlocking teeth around the periphery, and this and the leaf spring lO
By engaging with the ratchet portion 10c, the cam groove plate 50a can be latched at a desired rotational position. As a result, the shaft 2g that engages with the cam groove is positioned at 43 in the groove of the guide plate 1c, and therefore the position of the lead screw 2 at the right end of the device is determined. This configuration is used for adjusting the gap between the recording head and the platen, which will be described later.

Reference numeral 4 denotes a clutch gear, which is slidably supported in the axial direction with respect to the lead pulley 93, and is engaged in the rotational direction by a part of the key provided on the lead pulley 3, which will be described later in FIG. The rotational force of 2 is transmitted. A clutch spring 5 is a compression spring that biases the clutch gear 4 in the direction of the lead groove. Note that a regulating member is formed between the clutch gear 4 and the lever 1 and the lever 3 to prevent the clutch gear 4 from moving within a predetermined range in the axial direction.

A carrier 6 is slidably attached to the lead screw 2. 6a is a pressing portion for pressing the end face of the clutch gear 4, and is integrally formed on the left side of the carrier. 7 is a lead bin, and lead screw 2
The pressing direction is guided by a guide hole (not shown) in the carrier 6.

A lead pin spring 8 has one end attached to the carrier 6 and presses the lead bin 7 with the other end.

Reference numeral 9 denotes a recording head mounted on the carrier 6, and in this example, a cartridge is formed in which a head element 9a for ejecting ink and an ink tank 9b serving as an ink supply source are integrated and can be attached to and detached from the carrier 6. It is a disposable type that can be replaced when the ink is consumed. Note that an electrothermal transducer element or an electromechanical transducer element is used as an ejection energy generating element disposed in the head element 9a to apply ejection energy to ink, but it is possible to implement high-density mounting of ink ejection ports, etc. The former is preferably used because of the fact that it is the same, and that the manufacturing process is simple.

A hook 6c is fixed to a part of the carrier 6, and is attached to the recording head 9 when the carrier 6 moves as described later.
This is a mechanism used to stably stop the cap at the cap position.

A carrier guide shaft 5l is slidably engaged with a guide bin 6b provided at the rear end of the carrier 6. The guide @51 has an eccentric shaft 5 as will be described later in FIG.
1a, and these shafts 51a are rotatably supported by side plates 5lb and 51c provided at the ends of the chassis 1. Further, the end of the shaft 51a that is supported by the side plate 51c is fixed to the positioning knob 5Id, and the projection provided on the knob 51d engages with the hole 51e provided in the side plate 51c, so that the end of the shaft 51a is fixed to the positioning knob 5Id. A rotational position is determined.

As shown in FIGS. 4(A) and 4(B), the above-described configuration allows the distance between the recording surface of the recording paper 40 and the ejection port of the head element 9a to be set appropriately depending on the type of the recording paper 40. It is for the purpose of That is, by manually rotating the knob 51d, the shaft 5I can be moved to the position where the distance between the shaft 51a and the pin 6b is minimum, as shown in FIG. 4(A).
Also, as shown in Figure 4 CB), the same distance I! iIt can be fixed at the maximum position. In response to this, the recording head 9 rotates using the lead screw 2 as a rotary shaft,
The recording paper 40 can be placed in a position corresponding to relatively thin paper (Fig. 4 (8)), or in a position with a small gap corresponding to relatively thick recording paper such as an envelope (Fig. 4 (8)). B)) is fixed.

However, the configuration described above is a configuration compatible with recording paper during recording. That is, during the ejection recovery process, the recording head 9 is moved to the position of the recovery process system shown at the left end in FIG. At this time, the recording head 9 and the recovery system must always be in a predetermined positional relationship. Therefore, Figure 4 (
Regardless of the position shown in A) or (B), the recording head 9 needs to take a fixed position during the ejection recovery process. The configuration for this purpose is shown in FIGS. 5(^) and (B).

Figures 5 (^) and (B) show diagrams corresponding to Figures 4 (8) and (I1), respectively. Figure 5 (^)
In this case, @5 1 a and the bottle 6b can be engaged without changing the height of the engagement position between the III15l and the bottle 6b. At this time, in order to maintain the height of the locking position, the parallel surface of the trapezoidal cam 51g is also engaged with the bin fib.

In the case of FIG. 5(B), the recording head 9 moves and the pin 6b
When the pin 6b attempts to engage with @51a, the height of the engagement position of the bin 6b changes. Therefore, @51 has a taber part 51.
f is provided, and the trapezoidal cam 51g is provided with a tapered surface in accordance with this. As a result, @
51 (tapered portion 51f, shaft 51a), the height is maintained as the height of the engagement position changes.

With the above configuration, when the recording head 9 reaches the position of the ejection recovery system, it is possible to always maintain a predetermined height and therefore a predetermined positional relationship with the recovery system.

Note that the rotationally fixed position of the recording head 9 is 2 as described above.
The present invention is not limited to this, and it is also possible to fix it at an intermediate position to accommodate recording paper of various thicknesses. In this case, the protrusion of the knob 51d and the hole 51 of the side plate 51c
What is necessary is to increase the engagement position of e.

Furthermore, the rotation of the knob 51d is not limited to manual operation; for example, the knob 51d may be rotated using the driving force of a paper feed motor or the like in accordance with the key manual power corresponding to the recording paper used.

Referring again to FIG. 2, reference numeral 11 is a carrier motor made of, for example, a pulse motor, and rotary pins lla are provided in alignment at the lower part of the front and rear surfaces of the carrier motor. lla (the one on the rear side is not shown) is rotatably attached to a motor attachment hole provided in a recovery system base 50 that is movable on the chassis 1. Of course, the rotating bottle may be provided on the recovery system base 50 and the mounting hole may be mounted on the motor side.

The carrier motor 1l is rotatably mounted around the rotation bin Ha. Reference numeral 11b denotes a spring receiver, which is integrally formed with the carrier motor 11 and is erected parallel to the motor shaft to receive a motor spring 14, which will be described later. A cylindrical projection is formed in the spring receiving portion, and an end portion of a coiled motor spring l4 is fixed thereto.

Reference numeral 12 indicates a motor pulley, which is fixed to the motor shaft of the carrier motor 11. Reference numeral 13 indicates a timing belt, which is stretched between the motor pulley l2 and a pulley 3a provided on the shaft of the lead screw 2.

The motor spring l4 is a compression spring in the configuration of the wooden example, and is attached between one end of the lead arm lh and the spring receiver llb of the carrier motor 1l, thereby causing the carrier motor 1l to move in eight directions in the figure. This applies tension to the timing belt l3.

15 is a set shaft, and a side plate (not shown) fixed to the base 50 (a means for improving the shape of the discharge port by standing upright, a cap, and a so-called recovery system mechanism related to discharge recovery are attached). As mentioned above, the positional relationship between this recovery system mechanism and the recording head 9 is important.

For example, the positional relationship between the ejection orifice surface and the ejection orifice surface is important in order to perform well the function of the plate that covers the ejection orifice surface of the recording head 9, and also to improve the capping function of the ejection orifice surface. The distance between the cap and the discharge port surface is important.

Therefore, it is desirable that the positional relationship between these recovery system mechanisms and the recording head 9 is always kept constant.

On the other hand, the recording head 9 is driven by the lead screw 2 due to the driving force being transmitted through the lead screw 2.
Record while moving along the At this time, recording paper 4
0 and the ejection port of the recording head 9! It is clear that it is desirable that m be equal at every position of the movement. Therefore, it is possible to provide an adjustment mechanism that adjusts the distance of the recording head 9 to the recording paper and allows the recording head to move parallel to the recording paper, but this adjustment is performed in a certain positional relationship with the recovery system. It is possible that it may be damaged. Therefore, in this embodiment, the carrier motor 11 and the recovery system base 50 provided with a recovery system mechanism which will be described in detail later are made movable with respect to the chassis 1.

By this movement of the base 50 and the adjustment by the cam groove plate 50a described above, the position of the lead screw 2 is adjusted at both ends, so that the recording head 9 moves parallel to the recording paper 40. The details of the mechanism in the base 50 for this purpose are shown in FIG.

FIG. 6 is a perspective view of the recovery system base 50 from the opposite direction from FIG. 2, and is shown in a partially cutaway view.

In the figure, 50e is a guide groove member fixed to the side surface of a groove provided on the back side of the base 50, and this member 50e
groove, and a key-shaped guide member 1k fixed to the chassis 1.
By engaging with the guide portion, the moving direction of the base 50 is regulated, and the base 50 can be prevented from floating up from the chassis 1.

In the above mechanism, as the details are shown in FIG. Press one side while making contact with the other side. At this time, the base 50 moves in the direction guided by the member 50e and the member 1k due to the reaction force of the pressing force.

In addition, the structure of the said cam may be such that the cam plate is rotated around a predetermined IIk by operating a shaft that engages with a predetermined cam groove formed in the cam plate.

Along with this movement, the drive system for driving the carrier motor l1 and the motor 11 attached to the base 50, that is, the timing belt 13. The position of one end of the lead screw 2 is adjusted while the bobbin 3.12, the lead screw 2, etc., and the recovery system mechanism similarly attached to the base 50 move together.

On the other hand, the position of the other end of the lead screw 2 is adjusted by rotating the cam groove plate 50a.

With the above adjustment, the lead screw 2 can be made parallel to the recording paper, and therefore the recording head can be moved parallel to the recording paper.

Although this adjustment is performed by an assembly robot during the manufacturing process of the recording device, it is also possible for the user to perform this adjustment for repair, etc. after using the device for a long period of time. , 2 and 7 (^) to (C), means for improving the discharge port forming surface, which is one of the recovery system mechanisms, will be explained.

16 is a blade lever (see FIG. 7(A)), and a boss portion 16a is rotatably attached to a set shaft 15. 16b is an arm portion, and 16c is a hook portion. Reference numeral 17 denotes a blade for wiping the discharge port shaped surface, which can be made of an elastic member such as silicone rubber or chloroprene (CR) rubber. l8 is the blade axis, blade 1
7 is clamped at the center parallel to the rotation axis, and a blade lever 16e is rotatably attached. Also,
18a is a rotating piece, which is formed integrally with the blade shaft l8. An ink carrier 19 is made of a hydrophilic porous material (plastic sintered body, urethane foam, etc.), and is fixed to the plate lever 16. Note that the blade 17 and the ink carrier 19 are arranged at a position overlapping a cap, which will be described later.

20 is a set lever, which is rotatably attached to set \tthl5 and has a number attached to it, 20a. 20b is a stop tooth provided on the set lever 2o, 20c is a start tooth, and 20d is a rotating tooth, and the thickness of the start tooth 20c is about half that of the other teeth. 20e is an arm part, and by cutting a part of it in the plate thickness direction, the set surface 2
0f and a reset surface 20g are formed, and the rotary piece 18a of the blade @18 attached to the blade lever 16 is fitted and combined to drive the rotating piece 18a.

Reference numeral 21 denotes a tie ring, which is rotatably attached to the base 50 by a support member (not shown).

As shown in FIG. 7(B), the timing gear 2] has the above-mentioned stop teeth 20a. 2
A stop cam 21a is formed for engaging 0b. In addition, three types of drive r4T21J.
21h2. 2+J is formed, and a cap cam 21c for swinging a cap lever, which will be described later, is formed at a predetermined position. In addition, a piston set cam 21f is provided for pressing screws 1 and 1 of the bomb, which will be described later.
is formed as a face cam, and a piston reset cam 21g is integrally formed at a predetermined interval in correspondence with the piston set cam 21f.

Reference numeral 22 denotes an ink absorber spring, which is fixed at a predetermined position on the base 5o, and as shown in FIG. have. Reference numeral 23 denotes an ink absorber, which is made of a hydrophilic porous material like the ink carrier 19 described above. This ink absorber 23 is formed with a wiping portion 23a on which the blade 17 mentioned above comes into contact, and an absorption surface 23b on which the above-mentioned ink carrier 19 comes into contact and transfers ink is formed at the bottom of the groove C. There is. The absorber holding portion of the ink absorber spring 22 is biased upward with some elastic force, and is locked in a predetermined position by a stopper (not shown). Therefore,
When the aforementioned ink carrier 19 comes into contact, the ink absorber 23 deflects the ink absorber spring 22 and is displaced downward, thereby ensuring the contact state.

Next, the recovery system unit, which is one of the recovery system mechanisms, will be described mainly with reference to FIGS. 8 and 9.

In FIGS. 8 and 9, 24 is a cylinder;
It has a cylindrical cylinder part 24a and a guide part 24b that guides a piston shaft, which will be described later.
b has an ink flow path 24 by cutting out a part in the axial direction.
c. 24d is a cap lever receiver, which is formed so that a lever seal, which will be described later, is fitted therein. Further, 24e is an ink flow path, and the cylinder portion 2
It opens at a predetermined position within 4a. Reference numeral 24f denotes a recirculation lever, which is formed integrally with the cylinder 24 and is given rotational force by the spring portion 22b of the ink absorber spring 22 described above. Reference numeral 24g is a waste ink pipe, which is formed in the cylinder 24, and its tip is cut into an acute angle so that it can be easily inserted into a waste ink absorber, which will be described later. 24b is an ink flow path formed within the waste ink pipe 24g.

25 is a cylinder cap, which is pressed onto the end of the cylinder 24. 25a is a lever guide, which is arranged at a position facing the cap lever receiver 24d of the cylinder 24 mentioned above.

A piston seal 26 is fitted into the cylinder 24, and its inner diameter is made slightly smaller so as to obtain a predetermined pressure contact with the piston shaft, which will be described later. Further, the sliding force of the piston shaft may be reduced by applying a lubricating coating to the surface.

27 is a piston shaft, which includes an operating shaft 27a, a piston holder 27b, a piston receiver 27c. Connection shaft 27d. and a guide shaft 27e are formed, and a groove 27f serving as an ink flow path is further formed along the connecting shaft 27d and the guide shaft 27e. 27g is a rotation stopper, and the movement axis 2
7a as a groove. Further, a bearing portion 27h is provided on the end surface of the operating shaft 27a.

28 is a piston, and the main body forming the inner layer when viewed from the cylinder sliding part side is formed of an elastic porous material. This includes foams with single pores (such as sponges) and porous bodies with continuous pores such as continuous microporous materials, but continuous microporous materials such as open-cell foamed urethane foam are preferable. Can be formed. Further, a plurality of continuous pores may exist in a direction crossing the direction of elastic deformation.

The outer diameter thereof is formed to be larger than the inner diameter of the cylinder 24 by a predetermined amount, and when inserted into the cylinder 24, it is in an appropriately compressed state. Also, the outer circumferential surface 28a and the end' surface 28 of the piston shaft 27 that comes into contact with the piston presser 27b.
b is designed to position the solid layer (skin film) of the piston in its foamed state.

Here, even if the member forming the piston body is foamed and communicated, the skin film does not communicate with liquid and maintains airtightness, so the piston 28 fulfills its function. Note that as long as it does not have a skin film, a separate film may be provided to maintain airtightness.

42 is the bomb chamber. , 29 is a piston pressing roller, which is rotatably attached to the end of the piston fillz7 6-I. 30 is a piston return roller, which is similarly attached to the end of the piston fIII 27 so as to be rotatable. 3l is the axis of these rollers.

32 is a cap lever, and a rotation @ 32a, an ink guide 32b, and a lever guide 32c are formed. In addition, the tip has a convex spherical sealing surface 32d.
is in great shape. Further, an engaging portion 32e for engaging with a claw of a cap holder, which will be described later, is provided as a pair of upper and lower members. Further, the ink flow path 32f passes through the inside of the lever from the sealing surface 32d, bends at a right angle halfway, passes through the center of the ink guide 32b, and opens at the end surface thereof. Note that a cutout 32g is provided on the lower side of the ink guide 32b.

33 is a lever seal, into which the ink guide 32b is fitted and pressed into the cap lever receiver 24d. 33a is a communication hole, which communicates the notch 32g of the ink guide 32b with the ink flow path 24e.

34 is a cap holder, and a hook 34a that engages with the engaging portion 32e of the cap lever 32 is provided at a position opposite to the hook 34a. , 34b are openings for attaching a cap, which will be described later.

Reference numeral 35 denotes a cap, and a cap portion 35a is formed which serves as both a sealing cap for preventing normal ink from drying and a suction cap for ink suction. A suction port 35b is formed in the cap 35i+, and the cap 35
It opens toward the cap holder 34 through the center of the cap holder.

35c is a flange portion, which prevents the cap from coming off when attached to the cap holder 34. Further, a concave spherical cap seal portion 35d having the same curvature as the sealing surface 32d of the cap lever 32 is formed on the flange portion 35c, and only the central opening communicates when the cap lever 32 is pressed. Then the others are sealed.

Also, since the seal portions (32d, 35d) are spherical, the cap member has an excellent equalizing function.
Even if there is a step in the discharge port shape, the step can be immediately absorbed to maintain a stable sealed state.

Now, referring again to FIG. 2, 36 is a paper feed roller for conveying a recording medium such as paper, and is made by applying an elastic paint (urethane resin, acrylic resin, etc.) to the surface of, for example, a drawn aluminum tube. can be formed with. Also,
The roller 36 functions on its outer surface as a platen that regulates the recording surface of the recording medium, and its interior serves as a storage section for waste ink. Reference numeral 37 denotes a waste ink absorbing section provided inside the roller 36, which is constructed by filling a thin tube made of plastic such as vinyl chloride with an absorbing material such as polyester cotton so that it can absorb ink well in the axial direction. Note that the waste ink pipe 24g of the cylinder 24 is inserted into the waste ink absorbing portion 37, but even if the recovery system mechanism moves with the movement of the base 50, the inside of the absorbing portion 37 should be kept to an extent that does not impede the movement. Supported by Furthermore, the fibers of the absorbent material themselves are preferably made of a non-liquid-absorbing material such as resin or metal, but may be slightly liquid-absorbing.

38 is fluorocarbon resin. It is a paper press plate made of carbon fiber mixture A, etc., and is divided into four parts as shown in FIG. 3, and attached to the chassis 1. Further, a gear 3811 is fixed to one end of the shaft 38A for releasing the pressing force of the paper pressing plate 38, and the other end engages with a bearing 38C that pivotally supports the support 38A. Bearing 38c is in chassis 1
Fixed. Note that a gear portion of the release lever meshes with the gear 38B, but is not shown here. Reference numeral 39 denotes a paper feed motor, which is connected to the paper feed roller 36 via a speed reduction mechanism with a predetermined ratio.

40 is a recording paper such as paper or film.

Next, the operation of the above configuration will be explained.

First, during normal recording operation, the rotation of the shaft of the carrier motor 11 rotates the lead screw 2 via the timing belt 13, so the lead bin 7 engaged with the lead pin 28 causes the carrier 6 to move toward the printing digits toward the recording paper 40. scanned along. Here, since the carrier motor l1 is biased by the motor spring 14, the timing belt 13 is always tensioned and good transmission is achieved.

When moving the carrier 6, an inertial force acts upon starting and stopping, but since the weight of the carrier motor 1l absorbs this inertial force, the load applied to the motor spring 14 can be reduced.
The load applied to the rotation of the motor can also be reduced. Further, if an air damper or a hydraulic damper is provided in connection with this spring, noise caused by vibration of the rotor of the motor 1l can be reduced when the carrier 6 is started or stopped. By appropriately selecting the weight of the motor, the weight of the carrier portion, and the coefficient of the motor spring damper, overshoot of the rotor can be reduced and noise can be reduced.

Next, the operation of the last embodiment during non-recording will be described with reference to FIGS. 10 to 16.

FIG. 10 is a timing chart showing the operation timing of each part, and the operation timing of each part as shown can be determined by the number of pulses applied to the motor 1l.

FIG. 11 is a perspective view showing the detailed structure of the above-mentioned latch gear 4 and timing gear 2l.
By engaging with h, it slides on the lift screw 2 and rotates with it.

Further, the clutch gear 4 is biased toward the carrier 6 by a spring 5, and normally is in a predetermined position by the groove 21 of the lead screw 2 during recording and rotates together with the lead screw 2. When the recording head 9 moves to the home position, the clutch gear 4 is pushed by the carrier 6 and begins to engage with the timing gear 21.

The clutch gear 4 has a start tooth 4c and a normal drive tooth 4.
c, has start @4 c l and drive wJ tooth 4c2
The clutch gear is formed at a different position in the width direction of the clutch gear. Furthermore, the driving teeth 4c are not formed in the same manner over the entire circumference of the gear, and a portion thereof has a curved surface portion 4b. Furthermore, a pad 4a is formed at the end of the clutch gear 4 over the entire circumference.

As shown in FIG. 7 (6), the timing gear 2j is
Start l'fl21J, and two types of drive south 2lb2 with different positions. 2lb, and these teeth 21
1+,,2lb2. 21bff are formed at different positions in the width direction of the gear 21.

Figures 12 (^) to (C), and Figure 13 (^).
(B) is a diagram showing the engaged state of the vine latch gear 4 and the timing gear 21, respectively.

During normal recording, they are in an engaged state as shown in FIG. 12(A) and FIG. 13(8). However, at this time, the first
In Figure 3(A), the lead bin 7 is not in this position,
Furthermore, although not shown, a blade l7 and an ink carrier l9 are located above the ink absorber 23.

At this time, the clutch gear 4 rotates with the rotation of the lead screw 2, but the start teeth 4c and 2lb are not in a positional relationship to engage with each other (Fig. 13 (8)).
reference). Therefore, the timing gear 21 does not rotate, and moreover, the drive @ 21b and the collar 21h at the left end of the timing gear 21 are in a positional relationship where they can come into contact with the collar 4δ of the clutch gear 4 with a slight gap. , the timing gear 21 cannot rotate in either direction.

This prevents the tying gear 21 from rotating inadvertently even if some rotational force or human force is applied to it, thereby preventing errors in the operating position of the recovery system mechanism. be able to.

When the recording head 9 moves toward the home position and the carrier 6 pushes the clutch gear 4, the positional relationship between the clutch gear 4 and the timing gear 2l is finally as shown in FIG. 13(B).
It becomes as shown in . In this process, the start teeth 4c and 2
1b, in a positional relationship in which they can be engaged (however, at this time, the lead pin 7 is not yet in this position).

Next, as the lead bin 7 moves from the groove 3c to the groove 3b, the clutch gear 4 rotates clockwise in FIG. 12 (A) to (C). ) The state changes sequentially from state 1 shown in ). At this time, start tooth 4
Until the gears 2lb and 2lb engage with each other, the grooved surface part 4b, which is a non-meshing part shown in the ITl diagram, is in the position closest to the timing gear 2l, so that the timing may be inadvertently lost. The gear does not move to engage other drive teeth first.

As a result, the gear engagement between the clutch gear 4 and the timing gear 2l always starts with the start teeth starting from each other, so that the rotation of the timing gear 2l always starts from the correct position.

As a result, the recovery system mechanism driven via the timing gear 21 operates accurately.

Further, there are advantages such as there being no need to increase the mounting accuracy of the clutch gear 4 and the timing gear 2l so much.

In addition, as shown in FIG. 7(B), the timing gear 2l
The drive teeth 2lb. whose positions are different among the drive teeth of 2lb. are driving teeth that are engaged when the curved surface portion 4b comes into contact with the tie main ring gear 21 again. That is, normal drive tooth 2
If these driving teeth are located at the same position as lb2, the curved surface portion 4b
Since the drive teeth come into contact with each other, the drive teeth are moved to engage each other.

Further, while the driving teeth are engaged and the timing gear 2l is rotating, the hook 6 attached to the carrier 6
C slides on the side surface of the timing gear 21.

Thereby, it is possible to prevent the recording head 9 from moving away from the home position due to, for example, the lead pin 7 hitting the groove 3b before predetermined teeth engage with each other. This is because the lead screw rotates twice when the recording head 9 is at the home position and performs a series of recovery processes, so the lead pin 7 may move to the groove 3C.

In addition, in the above example, the series of recovery processing is performed using the lead screw 2.
Although the rotation is performed in this embodiment, the rotation is not limited to this, and any rotation can be set, thereby increasing the degree of freedom in designing the clutch mechanism and the like.

14(A) to (0) are explanatory diagrams showing the sequential operating states of the mechanism related to the blade 17, etc., and FIG. 15(A) to (C)
16(8) and 16(B) are explanatory diagrams showing the sequential operating states of the mechanism related to the cap 35, and FIGS.
13 is an explanatory diagram for explaining the operation of a mechanism for introducing waste ink into the waste ink storage section 37 in 6, and the operation will be explained with reference to these figures and FIGS. 12 and 13 described above.

First, the carrier 6 moves toward the home position (in the direction of arrow B). At this time, as shown in FIG. 13(A), the lead bin 7 is engaged with the lead 12a, and the ejection port 9C of the head element 9a is located at a position facing the ink carrier 19 (see FIG. 14(^)). It is in. At this position, all of the ejection energy generating elements of the head element 9a are driven to perform an ejection operation (hereinafter referred to as preliminary ejection), and the slightly thickened ink is ejected with the ejection force.
The recovery operation based on this preliminary ejection can be completed. Preliminary ejection is also performed at this position, which is periodically performed to prevent ink from increasing viscosity in unused ejection ports during normal printing. In addition, FIG. 14(A) is a side view of the vicinity of the same position. Furthermore, as shown in FIG. 13(B), when the lead screw 2 is rotated and the carrier 6 is moved in the B direction, the clutch gear 4 is pressed by the pressing part 6a, and the carrier 6 is also moved in the B direction. Start fM4c is timing gap 2
l start south 2lb. It is in a position where it can be engaged with. After that, the clutch gear 4 rotates in synchronization with the lead screw 2, and the start teeth and teeth engage, causing the timing gear 2l to rotate.
rotates in the D direction as shown in FIG. 14 (8). On the other hand, since the lead bin 7 has entered the position groove 3b from the introduction groove 3C, the carrier 6 does not move even if the lead screw 2 rotates.

When the timing gear 21 rotates in the D direction, the set lever 20 begins to rotate in the E direction because its gear portion and the gear portion of the set lever 20 are engaged with each other. Up until this point, the hook portion 16c of the blade lever 16 is engaged with the claw portion of the chassis, so only the set lever 20 rotates.
Although the blade lever III is stopped, the set surface 20f of the set lever 20 eventually rotates in the F direction while pushing down the rotating piece 18a of the blade shaft l8, so the blade 17 rotates in the G direction and closes the discharge port. It is set in a state where it can fit with the surface.

When the timing gear 2l further rotates in the D direction, the hook portion l6 of the blade lever 16 is detached from the pawl of the chassis, and the set lever 20 and blade lever l6 also rotate further, and the blade l7 is moved as shown in FIG. 14(C). Wipe the discharge port surface of the head 9. At this time, the ink liquid and the like that are removed by wiping the plate 17 are removed only in one direction, that is, only downward in this case, and the removed ink liquid and the like are absorbed or retained in the upper part of the ink carrier 19. Also, at this time, the ink carrier 19 begins to come into contact with the ink absorber 23. When the Zaraji set lever 20 rotates, as shown in FIG. 14(D),
Since the ink carrier 19 and the blade l7 slide on the surface of the wiping part 23a of the ink absorber 23, the ink received by the ink carrier l9 during preliminary ejection and the dust wiped by the blade l7 from the ejection port forming surface are removed. Ink droplets adhering to the ejection port surface are also absorbed by the wiping portion 23a. As a result, the ink carrier 19
The ink absorption ability of can retain its ability for a long time.

Further, the timing gear 2l rotates in the D direction, but since the stops i20a, 20b of the set lever 20 and the stop cam 21a of the timing gear 2I face each other and come into contact with each other, the encyclical movement of the set lever 20 is restricted. At the same time, since the driving teeth of the timing gear 21 are missing teeth, no rotation force is applied.

As mentioned above, since the blade and the absorber that holds the ink liquid etc. removed by the blade are the same as the ink receiver during preliminary ejection, the device can be made smaller and the time required for these recovery operations can be shortened. can. When the timing gear 2l rotates further, the cap cam Hc of the timing gear 2l initially regulates the rotating shaft 32a of the cap lever 32c shown in FIG.
As shown in FIG. 15(A), the cap 35 is stopped at a position away from the discharge port surface of the head element 9a.Next, when the timing gear 2l is roughly rotated in the D direction C, the cap cam 21c is moved away from the cap cam 21c. Since the restriction state is released, the cylinder 2 is removed as shown in FIG. 15(B).
The circular lever 24f of No. 4 is urged by the spring portion 22b of the ink absorber spring 22, the cylinder 24 rotates in the direction F, and the cap portion 35a of the cap 35 comes into pressure contact with the discharge port surface, completing the capping operation. do. Note that FIG. 13(B) shows a top view at this time. At this time, the seal surface 32d and the cap seal portion 35d are also tightly sealed due to the pressing force of the cap.

Now, the above is the cleaning of the nozzle surface and the capping operation, and normally it is stopped here and the next recording signal is input (accordingly, the above operation is performed in reverse, and the recording operation begins.

Next, a suction recovery operation that is performed when the ejection condition is not improved even after preliminary ejection will be described.

When starting this, the timing gear 2l is further rotated from the cap position, and the cap lever 32 is pressed by the cap cam 21f, so that the cap 35 is slightly separated from the discharge port forming surface as shown in FIG. 15(C). .

When the timing gear 2l roughly rotates in the D direction, it comes off again from the cap cam 21f, so the cap portion 35a
comes into pressure contact with the discharge port surface.

Now, regarding the bombing operation, when the recovery operation is started after the above-mentioned sealing cap is completed, the suction operation is started.

At this time, first, the piston set cam 21g presses the piston pressing roller 29 attached to the piston@27 according to the encyclical of Taikungya 21, so the piston shaft 27
moves in the H direction as shown in Figure 16 (^)&:. The piston 28 is then moved in the H direction &: by being pressed by the piston presser 27b, and the bomb chamber 42 is brought into a negative pressure state.
Since there is a skin layer on the outer periphery of the piston 28 and the contact surface with the piston holder 27b, ink will not leak through the communication hole of the foam material.

Further, the ink flow path 24e of the cylinder 24 is connected to the piston 28.
Since the piston 28 is closed, the piston 28 is in a movable state only by increasing the negative pressure in the pump chamber 42. on the other hand,
After the above-mentioned re-capping, the ink flow path 24c is opened as shown in FIG. The sucked ink passes through the ink flow path 32f formed inside the cap lever 32, passes through the communication hole of the lever seal 33,
The ink further flows into the pump chamber 42 through the ink flow path 24a of the cylinder 24.

When the timing gear 2l further rotates, the cap 35 is moved slightly away from the discharge port surface by the cap cam 21h again, and the remaining negative pressure in the pump chamber causes the cap 35 to move away from the discharge port surface. Cap part 35
The ink inside a is suctioned to eliminate any remaining ink in these areas.

Next, when the timing gear 2l is rotated in the opposite direction (the direction shown by the arrow f in FIG. 14(D)), the piston is reset.
- The cam 21i pulls the piston return roller 30 and moves the piston @27 in the direction of arrow J as shown in FIG.
Since the piston receiver 27c of the piston 28 moves after making contact with the piston holder 27c, a gap Δ°C is created between the end surface 28b of the piston 28 and the piston retainer 27b.

As a result of the movement of the piston @27 and the piston 28, the waste ink sucked into the bimp chamber 42 passes through the above-mentioned gap Δ°C and passes through the side 27f of the piston axis.
The ink passes through the ink flow path 24c of the cylinder 24, and further passes through the waste ink pipe 24g, and is discharged near the center of the waste ink absorber 37. At this time, since the ink flow path 24e of the cylinder 24 is closed by the piston 28 at the beginning of the operation of the piston 28, waste ink does not flow back toward the cap.

FIG. 17 collectively shows the sequence of the preliminary ejection or suction recovery described above. However, in the diagram, blade 1
7 is in a state where wiping is possible (set state. Fig. 14 (B)
)), and after wiping, the blade 17 is tilted with respect to the absorber 23 (reset state. Fig. 14 ()).
(See A)), and then immediately before the set lever 20 returns to its original position, the blade l7 is brought into a set state in which wiping is possible.

Next, referring to FIG. 3 (8) and (B), the tree nut h (
example'! ! The recording paper transport mechanism from recording on A1' to the square paper will be explained.

In these figures, 38 is a fluorocarbon resin as mentioned above. This is a paper press plate made of a carbon fiber-containing material or the like, and applies a pressing force to the recording paper to be loaded so that a predetermined distance is maintained between the ejection opening surface of the recording head 9 and the recording paper. The pressing force of the paper press plate 38 is due to the elastic force of the spring plate 380. Details of this mechanism are shown in FIGS. 18 (8) and (8).

FIG. 18(A) is a diagram showing a state in which the paper pressing plate 38 is applying a pressing force to the paper feed roller. In this case, the spring plate 38 has a D-shape in which a part of the circumference is linearly cut out, and the notch part of the shaft 38A that can slide in the rotation direction with respect to the paper press plate 38 is connected to the spring plate 38.
At this time, the end 38E of the paper pressing plate receives a force upward in the figure from the spring plate 38D. As a result, the paper press plate 38
The paper feed roller 3 attempts to rotate clockwise around 8A.
Apply pressing force to 6. On the other hand, FIG. 18(B) shows a state in which the pressing force exerted by the paper pressing plate 38 is released. In this case, the shaft 38A rotates and presses the arc portion or end 38F of the shaft 388. At this time, the entire spring plate 38D is pushed down in the figure. As a result, the end portion 38E does not receive any biasing force from the spring plate 380.

When this f'' force is released, the lii38A is engaged with the paper presser plate 38 with a certain amount of J2 friction force, so the paper presser plate 38 does not change its rotational position significantly. As a result, even when it becomes necessary to release the pressing force of the paper presser plate 38, the paper presser plate does not interfere with the movement of the recording head.

Further, the paper pressing mechanism described above is a mechanism that can apply a pressing force that does not prevent the paper feed roller 36 from properly conveying the recording paper within a limited space.

In other words, without using an elastic member in the paper press plate itself,
The pressing force is normally applied to the bottom chassis 1 of the device, which is a dead space.
Since the force is generated by a leaf spring arranged along the top, the degree of freedom in setting the pressing force by adjusting the length of the leaf spring increases, and the paper pressing member can be made smaller.

Note that the plate spring 380 is attached to the chassis l by a fixing member (not shown).

Referring again to FIGS. 3(8) and 3(B), 60 is a paper ejecting roller for ejecting the recorded recording paper, and 6l is a paper ejecting roller that applies pressing force to the recording paper conveyed by the paper ejecting roller 60 to perform recording. This is a spur that regulates the paper discharge direction and generates conveying force.

Reference numeral 62 denotes a transmission roller that is disposed at an intermediate portion between the paper ejection roller 60 and the paper feed roller 36 and transmits the rotation of the paper feed roller 36 to the paper ejection roller 60. These rotations are transmitted by frictional force caused by mutual contact.

The paper ejection roller 60 has a cylindrical shape with different radii at both ends and a middle part, and the transmission roller 62 contacts the middle part of the paper ejection roller 60 with a smaller diameter. Therefore, both ends of the recording paper with the larger diameter, which carry the recording paper, rotate at a slightly higher circumferential speed than the circumferential speed of the paper feed roller 36. As a result,
When the recording paper is ejected, the recording paper is conveyed with great force, so that a good recording can be formed.

Note that coil springs having appropriate elastic coefficients are used for the rotation shafts of the transmission roller 62 and the spur 6l, respectively. The details of the mechanism will be explained using the spur 61 as an example with reference to FIG. 19.

In FIG. 19, 61A is a coil spring and the spur 6
an axis passing through the center of l and extending on both sides of the spur 6
1 are rotatably engaged with each other. 103B is a shaft supporting member that pivotally supports both ends of the rotating shaft 61A, and is formed as a part of the inner M103 shown in FIG. Axial support material 103
B supports a shaft 618 so as to be slidable in the axial direction thereof. 10
Reference numeral 3C is a regulating member for regulating the movement of the spur 6l in the direction of the rotation axis and in a direction perpendicular thereto, and is provided on both sides of the spur 6l. The regulating member 103C is also the shaft supporting member 103B.
Similarly, it is used as part of the inner M103.

With the above configuration, the shaft 6l^ pivotally supports the spur 6l and obtains a pressing force of the spur 6l against the paper ejection roller 60 by its bending elastic force.

The inner lid 103 has a spring member 103A at its rear end, as shown in FIG. This pressing force and rotation! The spur 6l applies an appropriate pressing force to the paper discharge roller 60 by interacting with the elastic force of the glaze 61^.

In addition, as the inner M103 receives the above-mentioned pressing force, the inner Bto:+ fixed foot member 103 as shown in FIG. 3(^)
[1] and the rotating shaft 60C of the paper ejection roller 60 are securely engaged. As a result, the positional relationship between the spur 6l and the paper discharge roller 60 is always kept constant. Alternatively, by fixing the rotating shaft 60G against a hooking member or the like, a precise relationship can be maintained regardless of the precision of the inner cover.

In the transmission roller 62, the rotary shaft 62A made of a coil spring has the same function, and the elastic force of the shaft 62A provides a contact force to the paper feed roller 36 and the paper discharge roller 6o. As described above, the paper discharge roller 60 has a shape in which the diameter of the middle portion is smaller than that of both ends. The details of this configuration are explained in the 20th
As shown in the figure.

In FIG. 20, 60^ is a cover member made of a rubber material, and 60D is a cylindrical core member whose diameter is smaller at the middle part than at both ends. The paper discharge roller 60 is formed by covering the core member 60D with a pipe-shaped cover member 608.

As a result, it is not necessary to integrally mold such a shape with a rubber member or the like, and the paper ejection roller can be obtained relatively easily and at low cost.

Note that the groove portion 60B that is continuously provided at one end of the paper ejection roller 60 can catch the terminal end of the recording paper when it is ejected by the paper ejection roller 60, and prevents the recording paper from being misaligned. This makes it possible to ensure that the paper is ejected reliably.

Note that the shape of the core member 600 is not limited to the above, and for example, it may be a shape that is an extension of the shape of the groove portion 60B with a smaller intermediate portion, or a cylindrical shape may be obtained by covering with a rubber material.

Next, the case where the inkjet recording apparatus of this example is used in an upright position will be described with reference to FIGS. 21 and 22.

When the apparatus is used standing up, there are cases where it is used together with an auto feeder 200 as shown in these figures, and cases where thick paper such as envelopes is fed from the paper feed port on the loading MTA side.

In the case of ordinary recording paper that uses an auto feeder, the upper lid 102 can be used as a stacker for the discharged recording paper. At this time, as shown in Fig. 1, the upper Ml02
Fix it at a different angle than when using it as a paper guide for feeding paper.

The conditions for using the upper M102 as a stacker are as follows.

That is, the ejected recording paper is conveyed through the air to some extent by its own straining strength, and the position where it first contacts the upper i102 or the already stacked recording paper is located at the upper end 102 of the upper cover 102.
It should be near A. As a result, only the leading edge of the ejected recording paper slides on the stacked recording paper, etc., and sliding can be avoided as much as possible, preventing stains on the recording paper from unfixed ink. It can be prevented.

The configuration for this purpose requires that the upper end 102A be located near the common tangent line of the paper feed roller 36 and the paper ejection roller 60 in the paper ejection direction, that is, in the case of a wooden example, and that the lower end 102B be lowered. Become.

Furthermore, when the trailing edge of the recording paper stopped on the upper end portion 102A is completely discharged, it is lowered at that position and stacked without sliding.

For this purpose, the length of the upper ii 1 0 2 in the paper ejection direction is the length from the upper end 102A to the lower end 102B).
is the requirement, and if commonly used recording paper is used and the paper is ejected almost horizontally like a wooden example, the length should be 60% to 90% of the length of the recording paper, more preferably 70% to 80% of the length of the recording paper.
%.

Note that if the configuration of the recording device or the usage conditions are different and the paper ejection direction is different from the above, the length of the stacker may be determined while taking the first requirement above into consideration. Further, reference numeral 108 shown in FIGS. 21 and 22 is a roll-in prevention piece that can prevent stacked recording sheets from entering the paper feed port 106.

(Others) The present invention brings about excellent effects particularly in bubble jet recording heads and recording apparatuses among inkjet recording systems. This is because such a system can achieve higher recording density and higher definition, and it is expected that the fixing speed will be even slower depending on the recording pattern.

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 continuous type, but especially in the case of the on-demand type, it is necessary to arrange the liquid (ink) in accordance with the sheet and liquid path that hold it. The electrothermal converter that is
Generating thermal energy in the electrothermal transducer and producing film boiling on the thermally active surface of the recording head by applying at least one drive signal that corresponds to recorded information and provides a rapid temperature rise above nucleate boiling. As a result, bubbles in the liquid (ink) can be formed in one-to-one correspondence with this drive signal, which is effective. The growth and contraction of the bubble causes liquid (ink) to be ejected through the ejection opening to form at least one droplet. It is more preferable to use this drive signal in a pulse form, since the growth and contraction of bubbles can be carried out immediately and appropriately, making it possible to eject liquid (ink) with particularly excellent responsiveness. This pulse-shaped driving force is disclosed in U.S. Pat. No. 446:1359, U.S. Pat.
Those described in Specification No. 2 are suitable.

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

The configuration of the recording head includes, in addition to the combination configuration of ejection ports, liquid channels, and electrothermal converters (straight liquid flow path or right-angled liquid flow path) as disclosed in the above-mentioned specifications, a heat acting section. The present invention also includes configurations using the specifications of US Pat. No. 4,558,333 and US Pat. No. 4,459,600, which disclose a structure disposed in a region where the curve is bent. In addition, Japanese Patent Application Laid-Open No. 1989-5 discloses a configuration in which a common slit is used as a discharge part of a plurality of electrothermal converters.
No. 9-1231170 and Japanese Patent Application Laid-open No. 5 (1973) disclosing a configuration in which an opening for absorbing pressure waves of thermal energy corresponds to a discharge part.
The effects of the present invention are also effective even with a structure based on Publication No. 9-138461. In other words, regardless of the form of the printhead, printing can be performed reliably and efficiently. Furthermore, the present invention can also be 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 head may have either a configuration in which the length is satisfied by a combination of a plurality of recording heads, or a configuration as a single recording head formed integrally. In addition, even the serial type shown in the above example is a replaceable chip type record that can be attached to the device body to enable electrical connection to the device body and ink supply from the device body. The present invention is also effective in the case C when a cartridge type recording head is used, which is provided integrally with the head or the recording head itself. In addition, regarding the type and number of recording heads installed, for example, in addition to one type that corresponds to single-color ink, there is also a plurality of recording heads that correspond to multiple inks with different recording colors and densities. It may be something that can be done.

In addition, the inkjet recording apparatus of the present invention may take the form of an image output terminal for information processing equipment such as a computer, a copying apparatus combined with a reader, etc., or a facsimile apparatus having a transmitting/receiving function. It may be something.

[Effects of the Invention] As is clear from the above description, according to the present invention, the movable member that pivotally supports the spur comes into contact with the positioning member with a pressing force, so the positional relationship between the spur and the paper ejection roller is It will always be constant. As a result, for example, by using the movable member as a lid member of the device, it can also be used as a spur shaft supporting member,
This can contribute to miniaturization of the apparatus, and this dual use can prevent inaccurate operation of the paper ejection conveyance system.

[Brief explanation of drawings]

1 is an external perspective view showing an embodiment of an inkjet recording apparatus according to the present invention; FIG. 2 is a perspective view showing the main parts of the apparatus shown in FIG. 1 with the cover removed; 3(A) is a perspective view mainly showing the paper ejection system of the apparatus shown in FIG. 1, FIG. 3(B) is a side view of the drawing shown in FIG. 3(A), and FIG. 4 (A> and (B) are side views showing an example of the actual travel of the recording head corresponding to the recording paper, respectively. Figures 5 (A) and (B) are the recording at the home position corresponding to the recording paper, respectively. FIG. 6 is a rear view showing an embodiment of the head; FIG. 6 is a partially cutaway perspective view showing an embodiment of the engagement state of the base on which the recovery system mechanism is mounted with the chassis; FIGS. 7(A) to (C) 8 and 9 are exploded perspective views and cross-sectional views, respectively, of an embodiment of the suction recovery system for the recording head. The figure is a timing chart showing the operation timing of each part according to the embodiment, FIG. 11 is a perspective view showing an embodiment of the clutch mechanism for transmitting driving force to the recovery system mechanism, and FIG. 12 (A) ~(
C) is a side view showing the engagement state of the clutch gear, hook, and timing gear in the clutch mechanism shown in FIG. 11; FIGS. 13(A) and (B) are front views similar to FIG. 12; , Figures 14 (^) to (D) are side views for explaining the sequential operations of the blade and ink carrier section, and Figure 15 (
A) to (C) are side views for explaining the sequential operations of the cap section, and FIGS. 16(^) and (B) are side sectional views for explaining the operations of the pump section for performing suction recovery. , FIG. 17 is a timing chart illustrating the sequence of preliminary ejection or suction recovery processing for wood examples (some other examples), and FIGS. 18 (^) and (B) are press operations of the paper presser plate. FIG. 19 is a side view showing an embodiment of the mechanism; FIG. 19 is a perspective view showing an embodiment of the supported state of the spur in the paper ejection system; FIG. 20 is a front view showing an embodiment of the paper ejection roller;
22 is a perspective view showing another example of the state in which the device of this embodiment is used, and FIG. 22 is a side sectional view of the state shown in FIG. 21. 1...
・Chassis, 2... Lead screw 2a... Lead groove, 3a... Lead bullion, 3b... Position groove, 23... Ink absorber, 24... Cylinder, 27... Piston shaft, 28... Piston, 29... Piston pressing roller, 32... Cap lever 34... Cap holder, 35... Cap, 35a... Cap portion, 36... Paper feed roller, 37. ...waste ink absorber section, 3δ...paper press plate, 40...recording paper, 50...base, 5l...guide shaft, 60...paper ejection roller, 61...spur 62...Transmission roller, 100-...Inkjet recording device, 102...Top lid, 3C...Introduction groove, 4...Clutch gear, 5...Clutch spring, 6...Carrier, 6C... ...Hook, 7...Lead pin, 9...Recording head, 9a...Head chip (discharge element) 9b...
Ink tank portion, 9c--Discharge port, 9d--Discharge port forming surface, 11...Carrier motor, l3...Timing belt, l5...Set shaft, 16...Blade lever l7... - Blade, l9... Ink carrier, 20... Set lever 2l... Timing gear, 22... Ink absorber spring, 103... Inner lid. Figure 3 (B) Figure 4 Figure 5 Figure 6 Figure 210 Figure 13 Figure 15

Claims (1)

[Scope of Claims] 1) A paper ejection roller for ejecting recording paper along with recording, and a recording paper that is applied to the ejected paper by applying a pressing force to the paper ejection roller via the recording paper. An inkjet recording device comprising a spur for generating a conveyance force, comprising: a movable member rotatably supporting the spur and movable relative to the device; and a part of the movable member abutting the movable member. a positioning member provided at a position that is possible and has a fixed positional relationship with the shaft of the paper ejection roller; and a pressing means for pressing the movable member against the positioning member through the abutment. Features of inkjet recording device. 2) The inkjet recording apparatus according to claim 1, wherein the moving member is a lid member for covering the inside of the apparatus. 3) The inkjet recording apparatus according to claim 1, wherein the recording head of the inkjet recording apparatus discharges ink droplets using heat generated by an electrothermal transducer.