JPH04319463A - Sheet convey device and recorder equipped with therewith - Google Patents

Abstract

PURPOSE:To provide a sheet convey device and a recorder equipped therewith, particularly an ink jet recorder, equipped with a discharge system which is suitable for a small recorder having a small number of parts and functioning rationally. CONSTITUTION:A pair of spurs 11, 12 arranged in the discharge direction are disposed in the axial direction of a plurality of discharge rollers 9. These are supported by a spur holder 13. Further, the spur holder 13 is supported rotatably and movably within a face intersecting orthogonally with a roller axis by support axes 13A, 13B. The spurs 11 and 12 are biased to the discharge rollers 9 through the spur holder 13 by a spring 4 for energizing the center between the support axes 13A and 13B of the spur holder 13.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet conveying device and a recording apparatus equipped with the sheet conveying device.

0002

2. Description of the Related Art An example of an inkjet recording apparatus will be described below.

[0003] An inkjet recording device synchronizes the recording head with the relative movement of the recording sheet, and ejects ink from the ink ejection ports of the recording head in accordance with a data signal, and deposits ink droplets on the recording sheet. By doing so, recording such as printing is performed. Further, in such inkjet recording apparatuses, rubber rollers are generally used to transport the recording sheet for feeding and discharging it, and many have been used in which these rubber rollers are pressed against both sides of the recording sheet while rotating. .

However, in such an inkjet recording apparatus, immediately after recording, the ink comes into contact with the discharge roller in an unfixed state, so the ink adheres to the roller and is retransferred onto the recording sheet. Since there is a risk of contaminating the recording sheet, a spur with a sharp tip is applied to the recording surface side instead of a rubber roller.

On the other hand, in recent years, inkjet recording devices, especially recording heads, have come to use semiconductor film-forming processes and micro-processing techniques in their manufacturing process.
Smaller and cheaper recording heads are being realized.
Accordingly, for example, a disposable type recording head with an integrated ink tank has also been proposed.

[0006] Additionally, there is a desire for an inkjet recording device that is easier for users to use, and some printers that have become more portable due to miniaturization are powered by batteries.

Furthermore, in order to combine a printer with a reader or the like and use it as an output device for a copying machine, or to provide it with the function of a facsimile machine with sending and receiving functions, it is necessary to add a board for data processing or to add a data processing board. Some allow modules to be connected to connectors.

[0008]

[Problems to be Solved by the Invention] However, in the conventional type of recording device as described above, when the sheet is ejected upward, even if the recording sheet is bent at the ejection roller section, the bending effect does not affect the recording section. In order to prevent this from happening, the ejection roller section is moved as far away from the recording position as possible, and three or more spurs are used to bend the recording sheet, so the ejection system takes up a large amount of space. The problem was that it was expensive. In addition, in order to reduce the size and cost of the entire device, it is necessary to miniaturize the parts and limit the space for the arrangement and operation of the component parts. It is particularly desirable that the two parts be functionally combined into one.

An object of the present invention is to provide a sheet conveying device that uses a small number of parts, functions rationally, and is equipped with a discharge system suitable for a small-sized recording device, and a recording device equipped with the sheet conveying device. .

0010

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a discharge roller that guides a recording sheet from a recording position to a discharge section, and a spur that presses against the discharge roller through the recording sheet. In a sheet conveying device, a plurality of pairs of spurs arranged in a discharge direction, the plurality of pairs of spurs are arranged in an axial direction of the discharge roller and held together, and a surface perpendicular to the axis of the discharge roller is provided. a spur holder having a support shaft rotatably and movably supported within the spur holder;
a spring acting on a central portion between the support shafts of the spur holder so as to bias the plurality of pairs of spurs toward the discharge roller; The present invention is characterized in that an appropriate pressing force can be obtained for each of the recording sheets.

[0011]

[Operation] According to the present invention, a plurality of pairs of spurs are held in one spur holder, and the spur holder is rotatably and movably supported by the support shaft provided on the spur holder in a plane orthogonal to the discharge roller axis. Furthermore, by supporting one spring at the center between the support shafts of the spur holder,
Each of the plurality of pairs of spurs can be appropriately pressed toward the recording sheet on the discharge roller by a spring force. Furthermore, by supporting the support shaft on a part of the lid member that covers the recording head, the ejection system can be configured compactly with a small number of parts.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS Below, embodiments of the present invention will be described in detail and specifically based on the drawings.

FIG. 1 shows an inkjet recording apparatus according to the present invention in which an auto sheet feeder (ASF) is installed, and FIG. 2 shows the structure of the main body of the inkjet recording apparatus. In FIG. 1, 100 is an inkjet recording device, and 200 is an inkjet recording device 100.
It is an ASF that is attached to the bottom, and in addition to the ASF200 that is attached in this way, it is a relatively small unit that is placed vertically so that thick sheets such as cardboard and envelopes can be manually fed. There are some things.

Further, in the inkjet recording apparatus 100, 101 is an outer case thereof, and 102 is an outer case 10.
1 is an outer cover that can be opened and closed freely, and 103 is an inner cover provided inside the outer cover 102. Here, the outer cover 102 is a feeding guide for holding the recording sheet 104 to be fed and a recording sheet to be ejected. It can also be used as a discharge supporter for receiving the sheet 104. In addition, if the length of the guide or supporter described above is insufficient, use the auxiliary supporter 1.
05 upwardly from this outer lid 102. 10
6 is a sheet feeding port, 107 is a sheet discharging port, and 108 is a stacker section for receiving the discharged sheets 104.

Therefore, in the inkjet recording apparatus 100 configured as described above, when not in use, the outer cover 102 can be covered to overlap the inner cover 103 and stored in a compact form. Therefore, the user can freely carry it, for example, by putting it in a special storage bag or the like. Reference numeral 109 designates an operation section where operation keys and display means are provided, reference numeral 110 an interface connector for inputting a recording signal from the outside, and reference numeral 111 a hook section to which an external module or the like is attached. On the other hand, ASF200
, 201 is an outer case thereof, 202 is a tray unit for feeding recording sheets, and the inkjet recording apparatus 1 is
00, the lock lever 203 can be attached or detached by operating it.

Next, the configuration of the main parts of the recording apparatus 100 will be explained with reference to FIG.

In the figure, reference numeral 1 denotes a chassis to which the mechanical parts of the printer, an electric circuit board, etc. are attached.

Reference numeral 2 denotes a recording head mounted on the carrier 3. The recording head 2 of this example integrates a head element 2A for ejecting ink and an ink tank 2B serving as an ink supply source, and is detachable from the carrier 3. It is a disposable cartridge that can be replaced when the ink is used up. Note that an electrothermal transducer element or an electromechanical transducer element is used as the ejection energy generating element disposed in the head element 2A to apply ejection energy to the 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 the manufacturing process is simple and the manufacturing process is simple.

A lead screw shaft 4 also serves as a guide shaft, which guides the carrier 3 on which the recording head 2 is mounted and is driven by a motor (not shown), and its rotation moves the carrier 3 along the lead screw shaft. It is possible to reciprocate along the line 4. Reference numeral 5 denotes a sheet feed roller for conveying recording materials such as sheets, and is driven by a motor (not shown). A guide plate 6 guides the sheets along the sheet feed roller 5, and pinch rollers 7 and 8 are pressed against the sheet feed roller 5 by springs (not shown).

Note that the recording apparatus 100 of this embodiment is provided with a feeding port 116 outside the feeding port 106.
is used when manually feeding plain paper or the like, and in this case, the outer cover 102 serves as a paper feeding guide and a paper ejection supporter. The feed port 116 is a feed port for thick paper and plain paper when using ASF, and when using thick paper, record with the main body 100 of the apparatus standing perpendicular to this figure so that the head faces downward. will be held. Furthermore, no matter which feeding port is used, the paper path beyond the pinch roller 8 is the same.

Next, the path beyond the pinch roller 8 will be explained with reference to FIG.

In the figure, reference numeral 9 denotes a discharge roller for discharging the recorded recording sheet according to a path indicated by a dashed line; 10 is interposed between the discharge roller 9 and the sheet feed roller 5; This is a transmission roller for transmitting the rotation of the discharge roller 9 to the discharge roller 9. These rotations are transmitted by frictional force caused by mutual contact. Further, the discharge roller 9 is formed into a cylindrical shape with different radii at both ends and a middle portion, and the transmission roller 1
0 comes into contact with the smaller diameter portion of the discharge roller 9. Therefore, both ends of the recording sheet having a larger diameter for conveying the recording sheet rotate at a peripheral speed slightly higher than the peripheral speed of the sheet feed roller 5. As a result, the recording sheet is conveyed with great force during ejection, and a good recording surface can be formed.

Reference numeral 11 denotes a spur for applying a pressing force to the recording sheet conveyed by the discharge roller 9 to regulate the discharge direction of the recording sheet and to generate a conveying force, and 12 denotes a recording sheet discharged from the spur 11. A spur holder 13 holds the spurs 11 and 12, and 14 presses the spurs 11 and 12 against the discharge roller 9 through the spur holder 13. This is a spur spring.

Next, the support structure of the spur holder 13 will be explained with reference to FIG.

As shown in this figure, the spur holder 13 has shaft portions 13A and 13B at both ends thereof, and has an inner lid that is rotatable via these shaft portions 13A and 13B and movable in the horizontal direction. 103 is supported by oblong holes 103A provided at both ends thereof. Further, the spur spring 14 has its spring tip end on the holder arm 1 at the center line of the shaft portions 13A, 13B at both ends, that is, at the left and right center positions on the arm 13C of the spur holder 13, which are coaxial with the center of rotation.
It abuts inside the hole 13D of 3C.

Returning to FIG. 3 again, reference numeral 15 denotes a platen surface branching and protruding from the frame member that pivotally supports the discharge roller 9. As shown in FIG. Further, I represents the vertical recording center position of the recording head 2, II represents the vertical recording width, and the two-dot chain line represents the paper path. Note that the paper path in this example is defined by 1) pinch roller 8 and sheet feed roller 5, 2) platen surface 15, and 3) discharge roller 9 and spur 11, and the position of platen surface 15 is The plane defined by the plane and 1) is parallel to the surface of the head 2 and is opposite to the recording center of the head 2, and the position of 3) is slightly smaller than the plane created by 1) and 2). The recording sheet discharged in the direction away from the head 2 is angled somewhat outward from the vertical direction. This is to prevent the ejected recording sheet from falling to the recording surface side. Further, with this configuration, the recording sheet is reliably urged toward the platen surface 15, and the relative position between the platen surface 15 and the recording surface of the head 2 can be determined. The distance between the head 2 and the recording sheet can be maintained with high accuracy regardless of the positional error or eccentricity of the sheet feed roller 5.

Note that the spur 12 needs to convey the trailing edge of the sheet to the point 12P in order to reliably discharge the recording sheet, but if the sheet is pressed too strongly during recording, the recording sheet will bend at the position of the discharge roller 9. As a result, the recording sheet bulges toward the head between the platen surface 15 and the discharge roller 9, and the distance between the head 2 and the recording sheet cannot be maintained correctly, or the swollen sheet bulges toward the head. There is a risk of interference with 2. Therefore, spur spring 1
4 is set so that the spur 11 is given sufficient conveyance force, while the spur 12 is pressed at an appropriate position on the holder 13 so that a pressing force that does not strongly bend the sheet during recording is maintained. This allows one spring 14 to provide four spurs 11.
, 11, 12, 12 can be applied with appropriate pressure.

Furthermore, since the inner lid 103 is provided with the spurs 11 and 12 as described in detail above, it is necessary to maintain a precise positional relationship with the discharge roller 9. In the case of a disposable recording head, it is therefore desirable that the recording head can be opened and closed easily. Therefore, one end of the inner lid 103 is attached to the discharge roller 9.
In order to support the inner cover 103 on a member that is pivotally supported, the relative position with respect to the discharge roller 9 is maintained with high accuracy, and the other end of the inner cover 103 is attached to the chassis 1 as shown in FIG. It is positioned in the vertical direction by the knob 16. Note that the inner lid 103 is urged upward by a spring 17 so that it can be lifted by releasing the knob 16.

Next, the mounting state of the ASF 200 to the inkjet recording apparatus 100 and its locking means will be explained with reference to FIG.

As shown in FIG. 5, the inkjet recording apparatus 100 and the ASF 200 have left and right lock levers 203.
A and 203B. Note that the driving force is transmitted from the inkjet recording apparatus 100 to the ASF 200 via a gear (not shown), but in order to accurately transmit the driving force, the lock levers 203A and 203 are
Springs 204A and 204B are respectively provided in B, and the downward biasing force of these springs prevents play between the inkjet recording apparatus 100 and the ASF 200. Further, 108 is a leaf switch provided on the side of the recording device 100, and is a lock lever 203A.
It is turned on and off by a lock claw 205 provided at the tip of the switch.

The leaf switch 108 is used to switch modes as described below, and when manually feeding a sheet, it is kept in contact with the pinch roller 7 by rotating the feed roller 5 in the normal direction. However, when the ASF is attached, it is necessary to perform a feeding operation different from that during manual feeding in order to drive the ASF 200.

In this case, in particular, the lock claw 20 on the side that transmits the driving force from the main body of the recording apparatus 100 to the ASF 200
It is preferable for the switch to be operated by engagement of 5 from the viewpoint of reliability of operation. Next, referring to FIGS. 6(a), 6(b), and 6(c), a description will be given of the mounting means and the mounting operation of the battery pack and option module mounted on the recording apparatus 100. In these figures, 401 is a battery pack, 402 is an L-shaped lock claw protruding from the battery pack 401 to attach the battery pack 401 to the main body of the recording device 100, and 403 is provided on one side of the lock claw 402. It is an electrical thermal junction. Further, 404 is a stopper member, 405 is a spring that biases the stopper member 404,
On the other hand, 406 is an engaging portion on the main body side that engages the lock claw 402, and 407 is an electrical contact provided on the engaging portion 406 on the main body side. Furthermore, 410 is an option module shown on the right side of the figure, and 411 is an option module 4.
10 to the main body of the recording device 100; 412 is a spring that biases the locking claw member 411;
3 indicates a connector for sending a recording signal to the main body of the recording apparatus 100.

The battery pack 401 is attached to the main body of the recording apparatus 100 by moving the battery pack 401 in the direction of the arrow in the order of (a)→(b)→(c) shown in FIG.

Part (a) shows the state before installation, in which the battery pack 401 is first moved in the direction of arrow C so that the lock claw 402 on the battery pack 401 side and the engaging portion 406 on the main body side are engaged with each other. move in the direction. (b) shows a state in the middle of installation, and following the above, the battery pack 401 is next shifted in the direction of arrow D, and the lock claw 402 and the engaging portion 406 are engaged. (c) shows the state after mounting, and since the stopper 404 is fitted into the stopper groove 408 on the main body side of the mounting 100, the battery pack 401 will not easily come off even if it is displaced by some external force.

When removing the battery pack 401, slide the operation part 404A of the stopper member 404 horizontally to remove the stopper member 404 from the main body of the recording apparatus 100, release the lock, and then slide the battery pack 401 in the opposite direction from when it was installed. so that Note that by providing the electrical contact 403 in the lock claw 402 for connection as in this embodiment, there is no need to provide more openings than necessary on the main body side, and the contact part 407 is connected to the engaging part 406 in the main body. Since it is recessed into the main body, it can be used as a countermeasure against electrostatic damage to the electrical board of the main body. Furthermore, since the contacts naturally slide together during the installation process, poor contact is less likely to occur.

Similarly, the option module 410 is installed by moving the option module 410 in the direction of the arrow in the order of (a) → (b) → (c) shown in FIG. Since installation requires connection between electrical signal connectors 409 and 413, the option module 410 itself cannot be moved relative to the main body during installation, so the lock claw member 4
11 itself is offset with respect to the option module 410.

(Others) The present invention particularly relates to means for generating thermal energy as energy used to eject ink, in an inkjet recording system.
For example, the present invention provides an excellent effect in a recording head or recording apparatus that is equipped with an electrothermal converter (for example, an electrothermal converter, a laser beam, etc.) and uses the thermal energy to cause a change in the state of the ink. This is because such a system can achieve higher recording density and higher definition.

For its typical configuration and principles, see, for example, US Pat. Nos. 4,723,129 and 4,740.
Preferably, it is carried out using the basic principles disclosed in the '796 specification. This method is the so-called on-demand type.
It is applicable to both continuous types, but in particular, in the case of on-demand type, it is applicable to the electrothermal converter placed corresponding to the sheet holding the liquid (ink) or the liquid path. , by applying at least one drive signal that corresponds to recorded information and provides a rapid temperature rise exceeding nucleate boiling, the electrothermal transducer generates thermal energy to produce film boiling on the thermally active surface of the recording head. liquid (ink) that corresponds one-to-one to this drive signal.
This is effective because it can form air bubbles inside. 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 drive signal is described in US Pat. No. 4,463,359 and US Pat.
345262 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.

In addition to the configuration of the recording head that is a combination 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, U.S. Pat. No. 4,558,333 and U.S. Pat. No. 44 disclose a configuration in which a heat acting part is arranged in a bending region.
A configuration using the specification of No. 59600 is also included in the present invention. In addition, JP-A-59-123670 discloses a configuration in which a common slit is used as a discharge part for a plurality of electrothermal converters, and a hole that absorbs pressure waves of thermal energy is disclosed. The effects of the present invention are also effective even with a configuration based on Japanese Patent Application Laid-open No. 138461/1985 which discloses a configuration corresponding to the discharge section. That is, regardless of the form of the recording head, according to the present invention, recording can be performed reliably and efficiently.

Furthermore, the present invention can be effectively applied to a full-line type recording head having a length corresponding to the maximum width of a recording medium that can be recorded by the 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 in the case of a serial type as in the above example, the recording head is fixed to the apparatus main body or is attached to the apparatus main body, so that electrical connection with the apparatus main body and ink flow from the apparatus main body can be achieved. The present invention is also effective when using a replaceable chip-type recording head that can be supplied with ink or a cartridge-type recording head in which an ink tank is integrally provided in the recording head itself.

Further, it is preferable to add ejection recovery means for the recording head, preliminary auxiliary means, etc. to the configuration of the recording apparatus of the present invention, since this further stabilizes the effects of the present invention. Specifically, these include heating the recording head using a capping means, a cleaning means, a pressure or suction means, an electrothermal transducer, a separate heating element, or a combination thereof. For example, there may be mentioned a pre-heating means for performing the ejection, and a pre-ejection means for ejecting other than recording.

Regarding the type and number of recording heads to be mounted, for example, in addition to a single head that corresponds to a single color ink, there are also systems that correspond to a plurality of inks of different recording colors and densities. A plurality of them may be provided. That is, for example, the recording mode of the recording apparatus is not limited to a recording mode for only a mainstream color such as black, but may also be a recording mode in which the recording head is configured integrally or in a combination of multiple colors, Alternatively, the present invention is extremely effective for an apparatus equipped with at least one of the full-color recording modes using color mixing.

In addition, in the embodiments of the present invention described above, the ink is described as a liquid, but an ink that solidifies at room temperature or lower, and that softens or liquefies at room temperature, may also be used. Generally speaking, in inkjet systems, the temperature of the ink itself is adjusted within the range of 30°C or higher and 70°C or lower to keep the viscosity of the ink within a stable ejection range. Sometimes, ink in liquid form may be used. In addition, in order to actively prevent temperature rise due to thermal energy by using the energy to change the state of the ink from a solid state to a liquid state, or to prevent ink from evaporating, it is possible to solidify and heat the ink when left standing. An ink that is liquefied by water may also be used. In any case, by applying thermal energy in accordance with the recording signal, the ink is liquefied and the liquid ink is ejected, or the ink has already begun to solidify by the time it reaches the recording medium. The present invention is also applicable when using ink that is liquefied for the first time. Ink in such cases is disclosed in Japanese Patent Application Laid-open No. 54-56847 or Japanese Patent Application Laid-open No. 60-71.
In a state where it is held as a liquid or solid in the porous sheet recesses or through holes, as described in Japanese Patent No. 260,
It may also be configured to face the electrothermal converter. In the present invention, the most effective method for each of the above-mentioned inks is to implement the above-mentioned film boiling method.

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

[0046]

As is clear from the above description, the present invention includes a discharge roller that guides a recording sheet from a recording position to a discharge section, and a spur that presses against the discharge roller through the recording sheet. In a sheet conveying device, a plurality of pairs of spurs arranged in a discharge direction, the plurality of pairs of spurs are arranged in an axial direction of the discharge roller and held together, and a surface perpendicular to the axis of the discharge roller is provided. a spur holder having a support shaft rotatably and movably supported within the spur holder; and a central portion of the spur holder between the support shafts so as to bias the plurality of pairs of spurs toward the discharge roller. and a spring that acts on the recording sheet, and the spring applies an appropriate pressing force to the recording sheet on each of the plurality of pairs of spurs via the spur holder, so that the pairs of spurs arranged in the ejection direction A plurality of pairs of spurs forming the structure can be applied with appropriate pressure and movement using one holder and a spring, and the holder is pivotally supported on the lid member, so that the lid member is pivotally supported. Since the ejection roller is also pivotally supported by the case, stable relative positioning between the ejection roller and the plurality of pairs of spurs can be obtained, and it is also possible to contribute to miniaturization of the apparatus.

[Brief explanation of drawings]

FIG. 1 is an external perspective view showing an example of the configuration of an inkjet recording apparatus according to the present invention.

FIG. 2 is a cross-sectional view of the device shown in FIG. 1;

FIG. 3 is a configuration diagram of the vicinity of the exhaust system shown in FIG. 2;

FIG. 4 is a perspective view showing the configuration of a spur support device in the discharge system of FIG. 3;

FIG. 5 is a sectional view showing the configuration of an auto sheet feeder mounting device according to the present invention.

FIG. 6 is a perspective view for explaining the configuration and operation of the battery pack and option module mounting device according to the present invention.

[Explanation of symbols]

1 Chassis 2 Recording head 3 Carrier 4 Lead screw shaft 5 Sheet feed rollers 7, 8 Pinch roller 9 Ejection rollers 11, 12 Spur 13 Spur holder 14 Spur spring 15 Platen surface 100 Inkjet recording device 102 Outer lid 103 Inner lid 104 Recording sheet 200 Auto sheet feeder (ASF) 401
Battery pack 410 optional module

Claims (6)

[Claims] 1. A sheet conveying device comprising a discharge roller that guides a recording sheet from a recording position to a discharge section, and a spur that presses against the discharge roller via the recording sheet, a pair of spurs arranged in a discharge direction. and a plurality of pairs of spurs arranged in the axial direction of the ejection roller and held together, and supported rotatably so as to be rotatable and movable in a plane perpendicular to the axis of the ejection roller. a spur holder having a shaft; and a spring acting on a central portion between the support shafts of the spur holder so as to bias the plurality of pairs of spurs toward the discharge roller; A sheet conveying device characterized in that an appropriate pressing force on the recording sheet can be obtained from each of the plurality of pairs of spurs through a plurality of pairs of spurs. 2. A sheet conveying device including a discharge roller that guides a recording sheet from a recording position to a discharge section, and a spur that presses against the discharge roller via the recording sheet, and the recording head performs the recording at the recording position. In a recording apparatus that performs recording on a sheet, a plurality of pairs of spurs are arranged in a discharge direction, and the plurality of pairs of spurs are arranged in the axial direction of the discharge roller and held together, and the spurs of the discharge roller are a spur holder including a support shaft pivotally supported so as to be rotatable and movable in a plane perpendicular to the axis; and the support of the spur holder so as to bias the plurality of pairs of spurs toward the discharge roller. and a spring acting on a central portion between the shafts, so that an appropriate pressing force can be applied to each of the plurality of pairs of spurs against the recording sheet via the spur holder. recording device. 3. The recording apparatus according to claim 2, wherein the support shaft of the spur holder is pivotally supported by a long hole in a cover member that can be opened and closed and covers an upper part of the recording head. 4. The recording device according to claim 3, wherein the lid member has locking means for maintaining the covered state, and a spring assists the lid opening operation by releasing the locking means. 5. The recording head is an inkjet recording head that includes an electrothermal converter that generates thermal energy in accordance with a recording signal, and that discharges ink using the thermal energy. The recording device according to any one of items 2 to 4. 6. The recording medium according to claim 5, wherein the electrothermal converter causes film boiling in the ink using the thermal energy used to eject the ink. Device.