JPH0516474A - Roll paper cartridge and recording apparatus equipped therewith - Google Patents

Abstract

PURPOSE:To prevent the slackening of the leading end of roll paper at the time of the mounting and detachment of a cartridge or the unwinding of roll paper by holding a roll-shaped recording medium between the elastomer provided to a lid and the roller provided in a housing in a freely rotatable manner when the recording medium is received in the housing and the lid is closed. CONSTITUTION:Roll paper 1 wound in a roll form is received in the housing 31 of the roll paper cartridge 30 mounted on a recording apparatus in a freely detachable manner and supported in a rotatable manner by a roll paper support means 32. The leading end part 1A of the roll paper 1 is delivered to the outside from the opening 33 provided to the housing 31. An opening and closing lid 34 is provided to the upper part of the housing 31 in a freely openable and closable manner but, in this case, the leaf spring 35 being the elastomer coming into contact with the outer periphery of the roll paper 1 received in the housing 31 is provided to the rear of the opening and closing lid 34. When the opening and closing lid 34 is closed, a recording medium can be held between the leaf spring 35 and the freely rotatable roller 36 elastically supported on the side of the bottom part of the housing 31 by a spring 38.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll paper cartridge for accommodating a roll-shaped recording medium and a recording apparatus equipped with the roll paper cartridge.

[0002]

2. Description of the Related Art A recording device having functions such as a printer, a copying machine, and a facsimile, or a recording device used as an output device of a composite electronic device including a computer, a word processor, etc. An image is recorded on a recording medium (recording material) such as a plastic thin plate. The recording apparatus can be classified into an ink jet type, a wire dot type, a thermal type, a laser beam type, etc., depending on the recording method.

In a serial type recording apparatus which employs a serial scan system in which main scanning is performed in a direction intersecting a conveyance direction (sub-scanning direction) of the recording medium, the recording medium is set at a predetermined recording position and then along the recording medium. The image is recorded (main scanning) by the recording means mounted on the moving carriage, and after the recording for one line is completed, the paper is fed by a predetermined amount (pitch conveyance), and then the recording medium is stopped again. Then, by repeating the operation of recording (main scanning) the image of the next row, the entire recording medium is recorded. On the other hand, in a line type printing apparatus that prints only by sub-scanning in the conveyance direction of the print medium, the print medium is set at a predetermined print position, one line of print is performed at a time, and then a predetermined amount of paper is printed. The entire recording medium is recorded by repeating the operation of feeding (pitch feeding) and then collectively recording the next row.

Among the above-mentioned recording apparatuses, the ink-jet recording apparatus (ink-jet recording apparatus) performs recording by ejecting ink from a recording unit (recording head) onto a recording medium, and it is easy to make the recording unit compact. And
High-definition images can be recorded at high speed, plain paper can be recorded without any special processing, running costs are low, and the non-impact method produces less noise and multicolor images. It has advantages such as easy recording of a color image using ink. Above all, a line type apparatus using a line type recording means in which a large number of ejection openings are arranged in the paper width direction can further speed up recording.

In particular, an ink jet type recording means (recording head) for ejecting ink by utilizing thermal energy
Is a high-density liquid channel arrangement (discharging) by forming the electrothermal converter, electrodes, liquid channel wall, top plate, etc. formed on the substrate through semiconductor manufacturing processes such as etching, vapor deposition, and sputtering. Those having an outlet arrangement) can be easily manufactured, and further downsizing can be achieved.
On the other hand, there are various requirements for the material of the recording medium, and in recent years, paper and resin thin plate (O
In addition to HP, etc., it has been required to use thin paper or processed paper (paper with punched holes for filing, paper with perforations, paper of arbitrary shape, etc.).

By the way, in the above-mentioned recording apparatus, particularly the ink jet recording apparatus, even if the recording means is small, the apparatus is used when setting a cut sheet (recording medium such as recording paper) of A3 size or A4 size. The main body becomes large. On the other hand, if roll paper is used, it is possible to record 200 or more sheets of A3 size with a roll diameter of 70 mm, and the size of the recording device is significantly reduced (for example, about 350 mm). be able to. As a result, the width of the recording device can be reduced to less than half that of the cut sheet cassette system.

[0007]

On the other hand, when roll paper is used as the recording medium, curling (curved shape), which is a roll habit, occurs on the recording medium, and the handling (handling) of the recording medium is complicated. There is a problem with
It is required to resolve these. For the former,
The problem can be solved by providing a guide having a curvature opposite to the curl direction in the conveyance path of the recording medium and rectifying the curl by squeezing the recording medium by friction. For the latter, roll recording media (roll paper)
It is possible to solve the problem by accommodating the roll paper in a cartridge (cassette) that can be easily attached and detached, and by making the roll paper automatically fed from the leading end.

However, in the conventional structure in which the roll paper is stored in the cartridge, when the cartridge is attached to or detached from the recording apparatus to change the paper size, the roll paper is loosened and the next paper is fed. The operation became inaccurate or impossible, and the user had to open the cartridge lid one by one to remove the roll paper.

The present invention has been made in view of the above technical problems, and an object of the present invention is to automatically feed a roll paper, to attach / detach a cartridge or to rewind the roll paper. It is possible to prevent the occurrence of slack at the end of the roll paper at the time of loading, and also to prevent the movement of the position of the front end of the roll paper due to the attachment / detachment of the cartridge, and to stabilize the automatic paper feed operation after mounting the cartridge. A cartridge and a recording apparatus provided with the roll paper cartridge.

[0010]

According to the present invention, there is provided a roll paper cartridge in which a roll-shaped recording medium is loaded in a casing, and the recording medium can be attached / detached by opening a lid provided on the casing. When the roll-shaped recording medium is stored and the lid is closed, the recording medium is sandwiched between an elastic body such as a leaf spring provided on the lid and a roller rotatably mounted in the housing. Thus, the above object is achieved. Further, the present invention achieves the above-mentioned object by having a configuration in which the leading end portion of the roll paper is sandwiched between the leaf spring and the roll paper transport roller.

According to another aspect of the present invention, a roll paper cartridge for accommodating a roll-shaped recording medium, a conveying means for conveying the recording medium to a recording section, and recording on the recording medium based on recording information. In a recording apparatus having a recording unit for performing, the roll paper cartridge has a casing for accommodating a roll-shaped recording medium, and a lid provided on the casing for attaching and detaching the recording medium. A configuration in which, when the roll-shaped recording medium is stored and the lid is closed, the recording medium is sandwiched between an elastic body such as a leaf spring provided on the lid and a roller rotatably mounted in the housing. By doing so, the above object is achieved.

[0012]

1 is a longitudinal sectional view schematically showing an embodiment of a recording apparatus equipped with a roll paper cartridge to which the present invention is applied. The recording apparatus P of the present embodiment is configured to perform recording based on the image signal transferred from the host machine, and also to record according to the image signal from the reading apparatus R that reads a document or the like. In FIG. 1, a roll paper cartridge 30 accommodating a roll-shaped recording medium (roll paper) 1 is detachably mounted at the bottom of the recording device P.
The recording medium (roll paper) 1 is stored in the cartridge 30 by a pressing roller 36 that also serves as a roll paper transport roller.
It is sent out and conveyed while being pulled out by the first transport roller 2 composed of a pair of rollers and the second transport roller 3 composed of a pair of rollers. Then
After passing through the recording medium cutting means 4 such as a cutter,
The sub-scanning roller 5 composed of a pair of rollers and the pulling roller 6 composed of a pair of rollers are reached.

Recording on the recording medium 1 (image formation)
This is performed by the recording unit 20 provided between the sub-scanning roller 5 and the pulling roller 6. The recording unit 20 is provided with recording means (recording head) 21 for forming an image on the recording medium 1. Recorded recording medium 1
Is a discharge roller 7 composed of a pair of rollers,
It is discharged from the discharge port 8 to the outside of the apparatus. The recording means 21 is mounted on a carriage 24, and the carriage 24 is guided and supported by a pair of guide rails 9 and 10 so as to be capable of reciprocating in the width direction of the recording medium 1 (direction perpendicular to the paper surface). .

FIG. 2 is a perspective view of the recording unit 20 of the recording apparatus of FIG. 1 as seen from the front. This embodiment shows a case where the present invention is applied to an inkjet type recording apparatus (inkjet recording apparatus). In FIG. 2, recording means (recording heads) 21 mounted on the carriage 24 are four recording means (recording heads) 21 that use different inks, respectively.
It is composed of C, 21M, 21Y and 21B. In the case of color recording, for example, cyan, magenta, yellow, and black colors are used as ink colors of these recording means. Each recording unit (recording head) 21 includes an electrothermal converter that generates thermal energy used for ejecting ink. Further, the recording unit 21 ejects ink from the ejection port based on a change in the state of the ink including generation of bubbles due to film boiling generated in the ink by the thermal energy generated by the electrothermal converter.

FIG. 3 is a partial perspective view schematically showing the structure of the ink ejection portion of the recording means (recording head) 21.
In FIG. 3, the recording material 1 and a predetermined gap (for example,
A plurality of ejection openings 52 are formed at a predetermined pitch on the ejection opening surfaces 51 facing each other at about 0.5 to 1.5 mm), and each of the common liquid chambers 53 communicates with each ejection opening 52. Liquid path 5
An electrothermal converter (heat generating resistor, etc.) 55 for generating energy for ejecting ink is disposed along the wall surface of No. 4. In the recording apparatus (inkjet recording apparatus) shown in FIGS. 1 and 2, each recording unit (recording head) 21 is
In a positional relationship such that the plurality of ejection ports 52 are arranged in a direction intersecting with the main scanning direction (moving direction) of the carriage 24,
It is mounted on the carriage 24. In this way, the corresponding electrothermal converter 55 is based on the image signal or the ejection signal.
The recording means (recording head) 21 is configured to drive (energize) to cause the ink in the liquid path 54 to boil and to eject the ink from the ejection port 52 by the pressure generated at that time.

In FIG. 2, an ink tank (for example, an ink cartridge) 11 for supplying ink to the recording means 21 is mounted on a carriage 23 that moves in the main scanning direction in synchronization with the carriage 24. The ink tank 11 has four recording means 21 corresponding to four recording means 21.
Each of the ink tanks 11C, 11M, 11Y, and 11B is configured to contain ink of cyan, magenta, yellow, and black. Then, the ink in each ink tank 11 is supplied to each of the tubes 22C and 22C by a pump (not shown).
It is supplied to each recording means 21 through M, 22Y and 22B.

In FIG. 2, the carriage 24 on which the recording means 21 is mounted is driven by the motor 12 to drive the pulley 1.
3, it is reciprocally driven in the direction of arrow B via the driven pulley 14 and the belt 15. The motor 12 has a recording means 21.
Is for regulating the main scan (the recording position in the width direction of the recording medium 1). Further, the carriage 23 on which the ink tank 11 is mounted is also reciprocally driven by the motor 16 in the direction of arrow B in synchronization with the carriage 24 of the recording means via the drive pulley 17, the driven pulley 18, and the belt 19. . The sub-scanning roller 5 and the pulling roller 6 are connected to a motor (not shown) so that they can be synchronously driven, and in order to maintain the flatness of the recording medium 1, the pulling roller 6 is driven at a peripheral speed slightly higher than that of the sub-scanning roller 5. It Further, the recording medium 1 is regulated so that the gap between the recording medium 1 and the ejection port forming surface 51 of the recording head 21 becomes constant by bringing the back surface of the recording medium 1 into close contact with the platen 29. The platen 29 can be configured to attract the recording medium 1 by electrostatic attraction or air suction, for example.

Then, the recording by the recording means 21 is started from the left side in FIG. 2 to the recording medium 1 which is stopped, the image recording of the recording width H is performed to the right side, and the recording for one line is completed. . When the recording for one line is completed, each carriage 23, 24 is returned to a predetermined position on the left side (carriage return). By driving the sub-scanning roller 5 and the pulling roller 6 by a predetermined amount during the return movement of the carriages 23, 24, the recording medium 1 is moved in the direction of the arrow A (conveying direction) by a predetermined amount (usually one line width). Paper is fed by the corresponding amount). After finishing the paper feeding, the recording of the next line is started. Recording is performed on the entire area of the recording medium 1 by repeating the same operation thereafter. In this embodiment, by using the four recording means 21,
A full-color image can be formed. Further, in this embodiment, the recording medium 1 can be cut into a desired length in advance by the cutter 4 shown in FIG. When recording is completed, the recording material 1 is ejected from the ejection port 8 to the outside of the machine by the ejection roller 7 composed of a pair of rollers.

FIG. 4 is a longitudinal sectional view showing the structure of the roll paper cartridge 30, and FIG. 5 is a perspective view showing the roll paper holding means in the roll paper cartridge 30 of FIG.
The roll paper cartridge 30 is removably (replaceable) loaded in the recording device P. In FIGS. 1, 4, and 5, a housing (cassette case) 31 of a roll paper cartridge 30 accommodates a recording medium (roll paper) 1 made of continuous paper wound in a roll shape. The roll-shaped recording medium 1 is rotatably supported by roll paper support means 32 provided in a housing 31,
The tip portion 1A of the recording medium 1 extends to the outside from an opening 33 formed in the housing 31. Therefore, the recording medium 1 can be continuously pulled out by pulling the tip portion 1A.

An opening / closing lid 34 (FIG. 4) for attaching / detaching the roll paper 1 to / from the housing 31 is provided on the upper surface of the housing 31. A leaf spring (elastic body) 35 is attached to the back surface of the lid 34 so as to come into contact with the outer periphery (tip portion) of the stored roll paper 1. A roller 36 is rotatably mounted inside the housing 31 so as to come into contact with the outer periphery of the stored roll paper 1 on the side substantially opposite to the leaf spring 35. The roller 36 is rotatably supported along long holes 37 formed on both sides of the casing 31,
A compression spring 38 mounted between the shaft of the roller 36 and the housing 31 is constantly pressed against the outer circumference of the roll paper 1. In this way, the roll paper 1 is mounted on the casing 31.
When the lid 34 is housed inside and the lid 34 is closed, a predetermined pressure contact force is applied between the leaf spring (elastic body) 35 provided on the lid 34 and the roller 36 rotatably mounted in the housing 31. It is pinched. In this embodiment, the roller 36
Also serves as a roll paper transport roller for sending the roll paper 1 out of the cartridge 30. The movable structure of the roller 36 including the long hole 37 and the spring 38 is omitted, the roller 36 is rotatably supported at a fixed position, and the elastic force of the leaf spring 35 causes the roll paper 1 to move toward the roller 36 side. You may comprise so that it may press-contact. The leaf spring 35 is for elastically sandwiching the roll paper 1. Therefore, instead of this, a spring having another structure such as a coil spring or a torsion coil spring, or an elastic body such as a rubber-like elastic material is used. If necessary, other members may be used.

According to the roll paper cartridge 30 described above, the leaf spring 35 is provided on the back surface of the opening / closing lid 34, and the roll paper conveying roller 36 is biased in the housing 31 by the spring 38 so as to be movable in parallel. Is rotatably supported,
When the roll paper 1 is mounted and the lid 34 is closed, the outer circumference of the roll paper 1 (the leading end portion of the roll paper) is sandwiched between the leaf spring 35 and the roller 36 with a predetermined elastic force. Since the roll paper 1 is configured, it is possible to apply an appropriate load to the roll paper 1 in the rewinding direction, and it is possible to prevent the roll paper 1 from loosening at its tip. Therefore, it is possible to prevent the leading edge of the roll paper 1 from being loosened when the cartridge is attached / detached (replaced), when the cartridge is carried, or when the roll paper is rewound. It becomes possible to eliminate the movement, and it becomes possible to automatically feed the paper after the roll paper cartridge 30 is mounted and to improve the stability of the paper feeding operation.

In the above-described embodiments, the case where the present invention is applied to the ink jet recording apparatus has been described as an example, but the present invention is applicable to the thermal transfer recording apparatus, thermal recording apparatus, wire dot recording apparatus, laser beam recording. The present invention can be similarly applied to a recording apparatus of another recording method such as an apparatus, and the same effect can be achieved. Further, in the above-described embodiment, the serial type recording apparatus in which the recording unit (recording head) 21 is mounted on the carriage 24 and the main scanning is performed along the recording medium 1 has been described as an example.
The present invention can be similarly applied to the case of a line type recording apparatus using a line type recording means corresponding to the whole or a part of the recording width of the recording medium, and the same effect can be achieved.

Further, in the above-mentioned embodiment, the color recording apparatus using a plurality of recording heads for recording with the inks of different colors has been described as an example. However, the present invention records by one recording head. The same application is possible regardless of the number of recording devices (recording heads) such as a device or a recording device for gradation recording that uses a plurality of recording heads that perform recording with the same color but different densities. The effect of can be achieved. Further, as the recording means, a cartridge type recording means (head cartridge) in which a recording head and an ink tank or the like are integrated, or a structure in which the recording head and the ink tank or the like are separately provided,
The same can be applied to other recording heads and recording devices having ink tank configurations.
The same effect can be obtained.

When the recording apparatus is an ink jet recording apparatus, the present invention can be applied to, for example, a recording means (recording head) using an electromechanical transducer such as a piezo element. The present invention brings about an excellent effect in an ink jet recording apparatus using a recording means of a type that ejects ink by utilizing thermal energy. This is because such a system can achieve high density recording and high definition recording.

Regarding the typical structure and principle thereof, see, for example, US Pat. Nos. 4,723,129 and 4740.
This is preferably done using the basic principles disclosed in 796. This method can be applied to both the so-called on-demand type and the continuous type, but particularly in the case of the on-demand type, a liquid (ink) is used.
By applying at least one drive signal to the electrothermal converter arranged corresponding to the sheet or liquid path in which is stored, which corresponds to the recorded information and causes a rapid temperature rise exceeding nucleate boiling. Since the electrothermal converter generates heat energy to cause film boiling on the heat acting surface of the recording means (recording head), as a result, bubbles can be formed in the liquid (ink) in a one-to-one correspondence with this drive signal. It is valid.

Due to the growth and contraction of the bubbles, the liquid (ink) is ejected through the ejection openings to form at least one droplet. It is more preferable to make the driving signal into a pulse shape because bubbles can be grown and contracted immediately and appropriately, and thus a liquid (ink) with excellent responsiveness can be ejected. As this pulse-shaped drive signal, US Pat.
Those described in US Pat. Nos. 4,633,359 and 4,345,262 are suitable. Incidentally, US Pat. No. 43131 of the invention relating to the rate of temperature rise of the heat acting surface
If the conditions described in the specification of No. 24 are adopted, more excellent recording can be performed.

As the constitution of the recording head, in addition to the combination constitution of the discharge port, the liquid passage, and the electrothermal converter (the linear liquid passage or the right-angled liquid passage) as disclosed in the above-mentioned respective specifications. US Pat. No. 4,558,333, US Pat. No. 4,558,333, which discloses a configuration in which a heat acting portion is arranged in a bending region.
A configuration using the specification of No. 459600 is also included in the present invention. In addition, Japanese Laid-Open Patent Publication No. 123670/1984 discloses a configuration in which a common slit is used as a discharge portion of the electrothermal converter for a plurality of electrothermal converters, and an opening for absorbing a pressure wave of thermal energy. The present invention is also effective as a structure based on Japanese Patent Laid-Open No. 138461/1984, which discloses a structure in which the discharge section is associated with the discharge section. That is, according to the present invention, recording can be reliably and efficiently performed regardless of the form of the recording head.

Further, 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 which can be recorded by the recording apparatus. Such a recording head may have a configuration that satisfies the length by a combination of a plurality of recording heads or a configuration as one recording head integrally formed. In addition, even with the serial type as in the above example, it is possible to electrically connect to the device body and supply ink from the device body by mounting it on the recording head fixed to the device body or the device body. The present invention is also effective when a replaceable chip type recording head or a cartridge type recording head in which an ink tank is integrally provided in the recording head itself is used.

Further, it is preferable to add recovery means for the recording head, preliminary auxiliary means, etc., which are provided in the present invention as a configuration of the recording apparatus, because the effects of the present invention can be further stabilized. If you list these specifically,
Capping means, cleaning means, pressurizing or suctioning means, electrothermal converter or other heating element or preheating means by a combination thereof, and ejection different from recording are applied to the recording head. Performing the preliminary ejection mode is also effective for stable recording.

Regarding the type and the number of recording heads to be mounted, for example, only one is provided corresponding to a single color ink, or a plurality of inks having different recording colors and densities are supported. And 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 only for mainstream colors such as black,
The recording head may be integrally configured or a combination of a plurality of recording heads may be used, but the present invention is also extremely effective for an apparatus provided with at least one of a mixed color of different colors or a full color by mixing colors.

In addition, in the above-described embodiments of the present invention, the ink is described as a liquid, but it is an ink that solidifies at room temperature or lower and softens or liquefies at room temperature, or an ink jet. In the method, the temperature of the ink itself is generally adjusted within a range of 30 ° C. or higher and 70 ° C. or lower to control the temperature of the ink so that the viscosity of the ink is within a stable ejection range. It may be in a liquid form. in addition,
Whether the temperature rise due to thermal energy is positively used as the energy for changing the state of the ink from the solid state to the liquid state, or the ink that solidifies when left standing for the purpose of preventing evaporation of the ink is used. In any case, the ink is liquefied by applying the thermal energy according to the recording signal and the liquid ink is ejected,
The present invention is also applicable to the case of using an ink that has a property of being liquefied only by thermal energy, such as one that has already started to solidify when it reaches the recording medium.

The ink in such a case is described in JP-A-54-
As described in JP-A-56847 or JP-A-60-71260, a mode in which it is held as a liquid or a solid in the recesses or through holes of the porous sheet and faces the electrothermal converter. May be In the present invention, the most effective one for each of the above-mentioned inks is to execute the above-mentioned film boiling method.

In addition, as the form of the ink jet recording apparatus according to the present invention, besides the one used as an image output terminal of information processing equipment such as a computer, a copying apparatus combined with a reader or the like, and a facsimile apparatus having a transmitting / receiving function. And the like may be used.

[0034]

As is apparent from the above description, according to the present invention, it is possible to load a roll-shaped recording medium into the housing and open / close the lid provided on the housing to attach / detach the recording medium. In a roll paper cartridge, when the roll-shaped recording medium is stored and the lid is closed, the recording medium is provided between an elastic body such as a leaf spring provided on the lid and a roller rotatably mounted in the housing. Since it is configured to sandwich, it is possible to eliminate the slack at the end of the roll paper when attaching or detaching the cartridge, when carrying the cartridge, or when rewinding the roll paper. Provided is a roll paper cartridge which does not move and can perform a stable automatic paper feeding operation.

According to another aspect of the present invention, a roll paper cartridge for accommodating a roll-shaped recording medium, a conveying means for conveying the recording medium to the recording section, and a recording medium for the recording medium based on recording information. In a recording apparatus having recording means for recording, the roll paper cartridge includes a housing for accommodating a roll-shaped recording medium, and a lid provided on the housing for attaching and detaching the recording medium. When the roll-shaped recording medium is stored and the lid is closed, the recording medium is sandwiched between an elastic body such as a leaf spring provided on the lid and a roller rotatably mounted in the housing. With this configuration, it is possible to eliminate slack at the end of the roll paper when attaching / detaching the cartridge, carrying the cartridge, or rewinding the roll paper. No longer be moved by the ridge detachable, it is possible to perform a stable automatic sheet feeding operation recording device is provided.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view showing an embodiment of a recording apparatus provided with a roll paper cartridge to which the present invention is applied.

FIG. 2 is a front perspective view showing a configuration of a recording unit in FIG.

3 is a partial perspective view schematically showing the structure of an ink ejection portion of the recording means (recording head) in FIG.

FIG. 4 is a schematic vertical sectional view showing the internal structure of the roll paper cartridge in FIG.

5 is a schematic perspective view showing a roll paper sandwiching means inside the roll paper cartridge of FIG. 4. FIG.

[Explanation of symbols]

1 Recording medium (roll paper) 2 First transport roller 3 Second transport roller 4 Recording medium cutting means (cutter) 5 Sub-scanning roller 6 pulling roller 7 discharge roller 11 ink tank 20 recording unit 21 recording means (recording head) 23 carriage 24 carriage 29 Platen 30 roll paper cartridge 31 housing 32 roll paper support means 34 Lid 35 Leaf spring (elastic body) 36 roller 38 spring 51 Discharge port forming surface 52 Discharge port 55 Electrothermal converter

Claims (8)

[Claims] 1. A roll paper cartridge in which a roll-shaped recording medium is loaded in a housing, and the recording medium can be attached / detached by opening a lid provided on the housing. A roll paper cartridge characterized in that, when the lid is closed, the recording medium is sandwiched between an elastic body provided on the lid and a roller rotatably mounted in the housing. 2. The roll paper cartridge according to claim 1, wherein the elastic body is a leaf spring. 3. The roll paper cartridge according to claim 2, wherein the front end portion of the roll paper is clamped between a leaf spring for preventing the slack of the front end of the roll paper and the roll paper transport roller. 4. A roll paper cartridge for accommodating a roll-shaped recording medium, a conveying means for conveying the recording medium to a recording section, and a recording means for recording on the recording medium based on recording information. In the recording apparatus having the above-mentioned, the roll paper cartridge has a casing for accommodating a roll-shaped recording medium, and a lid provided on the casing for attaching and detaching the recording medium, When the recording medium is stored and the lid is closed, the recording medium is sandwiched between an elastic body provided on the lid and a roller rotatably mounted in the housing. Recording device. 5. The recording apparatus according to claim 3, wherein the elastic body is a leaf spring. 6. The recording apparatus according to claim 5, wherein the leading end portion of the roll paper is clamped between a leaf spring for preventing the slack of the leading end of the roll paper and a roll paper transport roller. 7. The ink jet recording means, wherein the recording means is provided with an electrothermal converter for generating thermal energy for ejecting ink.
Recording device. 8. The recording apparatus according to claim 7, wherein the recording unit ejects the ink from an ejection port by utilizing film boiling generated in the ink by thermal energy applied by the electrothermal converter. .