JPH06210844A - Recording apparatus - Google Patents

Abstract

PURPOSE:To enhance the reliability of a recording apparatus by stabilizing the distance between papers by simple constitution guiding a material to be recorded in the direction energizing the same to a platen by an upstream guide means. CONSTITUTION:The center axes of both of a discharge roller 12 and a spur 13 in a horizontal direction are set on the same straight line and the positional relation of a platen 3 and respective rollers is set so that the contact part of a feed roller 10 and a pinch roller 11 is arranged above the paper passing surface of the platen 3 in order to feed recording paper 2 downwardly by the feed roller 10 and the pinch roller 11 to energize the same to the platen 3 on the downstream side thereof. The contact part of the discharge roller 12 and the spur 13 is arranged so as to be flush with the upper surface of the platen 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus for recording on a recording material according to image information, and more particularly to a recording apparatus adopting an ink jet recording system for recording by ejecting ink according to a signal. Is.

[0002]

2. Description of the Related Art Conventionally, in a so-called ink jet recording apparatus, a distance between an ink ejection surface of a recording head and a recording material such as recording paper or a plastic sheet (hereinafter, simply referred to as "paper distance") is a recording image. Greatly affect the quality of. The closer the distance between sheets is, the higher the image quality is improved.However, if the distance is too short, there is a possibility that the recording paper has irregularities and the ink ejection surface comes into contact with the recording paper, which deteriorates the image quality. There is. The currently targeted value for the above-mentioned distance between sheets is about 0.7 to 1.2 mm.

Now, the recording operation of the conventional recording apparatus will be described with reference to FIG. When a command to start the recording operation is given from a computer (not shown), the pickup roller 51 starts to rotate in the arrow direction (clockwise direction), and the recording paper 53 stacked on the paper feed tray 52 starts from the top. Separately feed the sheets one by one. The recording paper 53 fed by the pickup roller 51 is conveyed while being nipped by the feeding roller 54 and the pinch roller 55, and reaches the image recording unit on the platen 56. The recording operation is performed by scanning a carriage (not shown) and reciprocally moving an ink cartridge 57 integrated with a recording head, and ejecting ink according to an image signal. The recording paper 53 on which the image has been recorded is nipped by a discharge roller 58 and a spur 59, conveyed outside the apparatus, and discharged onto a discharge tray 60.

The structure of each part of the recording apparatus will be described more specifically. The feeding roller 54 and the pinch roller 55.
The horizontal central axes of are collinear. The same applies to the discharge roller 58 and the spur 59. The positional relationship between the platen 56 and each roller is shown in FIG.
The contact portion between the feeding roller 54 and the pinch roller 55 is on the same surface, and the feeding roller 54 conveys the recording paper 53 horizontally. Further, the sheet passing surface (upper surface) of the platen 56 and the contact portion between the discharging roller 58 and the spur 59 are also on the same surface, and the discharging roller 58 conveys the recording paper 53 horizontally.

[0005] peripheral speed relationship of the feed roller 54 and the discharge roller 58, the peripheral speed of the feed roller 54 v _1, the peripheral speed of the discharge roller 58 When v _2, v ₁ ≦ v such that ₂ The recording paper 53 is set with the discharge roller 58.
Is configured to be conveyed while being pulled. here,
The conveying force of the discharging roller 58 is set sufficiently weaker than the conveying force of the feeding roller 54, and actually, the discharging roller 58 is configured to pull on the recording paper 53 while sliding.
As described above, the tension is applied to the recording paper 53 to smooth the recording paper 53 and stabilize the distance between the ink ejection surface of the ink cartridge 57 and the recording paper 53.

[0006]

However, in the above-mentioned prior art, since the recording paper 53 is conveyed while being pulled by the discharge roller 58, the wrinkle-like irregularities formed in the same direction as the conveying direction cannot be removed. . Further, pulling may cause wrinkles in the same direction as the pulling direction on the smooth recording paper 53.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a recording apparatus which stabilizes the distance between sheets with a simple structure and improves the reliability of the apparatus.

[0008]

A typical constitution of the present invention for achieving the above object is a recording means for recording on a recording material according to image information, and a recording material for supporting the recording material in an image forming section. And a upstream guide means provided upstream of the platen in the recording material conveyance direction, and the upstream guide means guides the recording material in a direction to urge the recording material onto the platen. It is characterized by

[0009]

According to the above-mentioned means, the upstream guide means guides the recording material in the direction for urging the recording material on the platen, so that the recording material is brought into close contact with the platen at the image recording position, and the paper is always conveyed. The distance can be kept constant.

[0010]

【Example】

[First Embodiment] Next, a recording apparatus according to the present invention will be described with reference to the drawings. This embodiment will be described using an inkjet recording apparatus as a recording apparatus. FIG. 1 is a perspective explanatory view showing a schematic configuration of the recording apparatus, and FIG. 2 is a sectional explanatory view of the recording apparatus.

First, a schematic structure of an ink jet recording apparatus will be described with reference to FIGS. (Recording Means) The recording means records an ink image on the recording material conveyed by the conveying means. As a recording means in this apparatus, an inkjet recording method is used in which ink is ejected from a recording head to perform recording. That is, this recording head has a fine liquid discharge port (orifice), a liquid passage and an energy acting portion provided in a part of this liquid passage, and energy generation for generating droplet forming energy for acting on the liquid in the acting portion. Equipped with means.

As the energy generating means for generating such energy, a recording method using an electromechanical transducer such as a piezo element, electromagnetic waves such as a laser are irradiated to generate heat, and droplets are ejected by the action of the heat generation. There are a recording method using an energy generating means, a recording method using an energy generating means for heating a liquid and discharging the liquid by an electrothermal converter such as a heating element having a heating resistor.

Among them, a recording head used in an ink jet recording method for ejecting a liquid by thermal energy has a high density of liquid ejection ports (orifices) for ejecting recording liquid droplets to form ejection liquid droplets. Since they can be arranged, high resolution recording is possible. Among them, the recording head using the electrothermal converter as the energy generating means can easily be made compact, and has the advantages of the IC technology and the microfabrication technology, which have been remarkably improved in technology and reliability in the recent semiconductor field. This is advantageous because it can be used in two parts, high-density mounting is easy, and the manufacturing cost is low.

In this embodiment, as shown in FIG. 1, a disposable type ink jet cartridge 1 in which a recording head and an ink tank are integrated is used. At a position facing the inkjet cartridge 1,
As shown in FIG. 2, a platen 3 for supporting the recording paper 2 which is a recording material is provided.

A (carriage) 4 is a carriage on which the ink jet cartridge 1 is mounted and which scans in the width direction of the recording paper 2. An endless belt-shaped timing belt 6 hung around a pulley 5 driven by a drive source (not shown) is connected to the carriage 4, and the carriage 4 is guided to a guide rail 7 by rotationally driving the pulley 5. It is to reciprocate along it.

(Feeding means) In FIG. 2, 8 is a paper feed tray capable of stacking and storing a plurality of recording papers 2, and 9 is a recording paper 2 stacked in the cassette 8 from the top.
A pickup roller for separating and feeding the sheets one by one.

(Guide means) 10 and 11 are a feed roller and a pinch roller that are upstream guide means for the recording paper 2. The feeding roller 10 and the pinch roller 11 are in pressure contact with each other, and convey the recording paper 2 delivered by the pickup roller 9 to the recording position of the platen 3 on the downstream side.
Denoted at 12 and 13 are discharge rollers and spurs that are guide means on the downstream side of the recording paper 2. The spurs 13 are provided at a plurality of positions in the axial direction, and are made of a material that does not transfer ink even if the spurs 13 come into contact with the recording surface of the recording paper 2 after recording. The discharge roller 12 and the spur 13 cooperate to convey the recording paper 2 after image recording and discharge the recording paper 2 to a discharge tray 14 provided outside the apparatus shown in FIG.

(Recording Operation) Next, the recording operation of the recording apparatus configured as described above will be explained. When a command for starting the recording operation is given from a computer or the like (not shown), the pickup roller 9 is moved to the position shown in FIG. Starts to rotate in the arrow direction (clockwise direction), and the recording papers 2 stacked in the paper feed tray 9 are separated and fed one by one from the top. Recording paper 2 fed by the pickup roller 9
Is conveyed by being pinched by the feeding roller 10 and the pinch roller 11, and reaches the recording position of the platen 3. The recording operation is performed by ejecting ink from the inkjet cartridge 1 according to image information while the carriage 4 reciprocates. The recording paper 2 after the recording is completed is the discharge roller 12
It is nipped and conveyed by the spur 13 and is sequentially discharged and stacked on the discharge tray 14.

Next, a more specific structure of the guide means in the recording apparatus will be described with reference to FIG. Figure 2
As shown in FIG. 5, the center axes of the feeding roller 10 and the pinch roller 11 in the horizontal direction are displaced from the center axis of the pinch roller 11 by the distance A toward the downstream side in the recording paper conveyance direction. This pinch roller 11
The recording paper 2 is conveyed downward due to the deviation of the central axis of the platen, and after the leading edge hits the platen 3, the platen 3
Is transported while being urged by the upper surface of the. At this time, the recording paper 2 is curved at the contact portion with the platen 3, and the recording paper 2 is conveyed while being biased by the platen 3 due to this bending. Here, the shift amount A of the central axis of the pinch roller 11
Needless to say, it is smaller than the radius R ₁ of the feeding roller 10, but considering the reliability of the apparatus, it is preferable that A ≦ R ₁ sin 30 °. The horizontal center axes of the discharge roller 12 and the spur 13 are on the same straight line.

The positional relationship between the platen 3 and the rollers is such that the contact portion between the feeding roller 10 and the pinch roller 11 is above the sheet passing surface (top surface) of the platen 3 (on the cartridge side). This conveys the recording paper 2 downward by the feeding roller 10 and the pinch roller 11,
This is to urge the downstream side of the platen 3 toward the platen 3. The contact portion between the discharge roller 12 and the spur 13 is arranged so as to be flush with the upper surface of the platen 3.

The relationship between the peripheral speeds of the feeding roller 10 and the discharging roller 12 is set as v ₁ ≧ v ₂ when the peripheral speed of the feeding roller 10 is v ₁ and the peripheral speed of the discharging roller 12 is v _2. In order to press the recording paper 2 onto the platen 3 with the feeding roller 10, the discharging roller 12 applies a brake. At this time, if the conveying force of the discharge roller 12 is large, the recording paper 2 is bent upward in the platen 3. Therefore, the conveying force of the discharge roller 12 is sufficiently weakened so that the recording sheet 2 is conveyed while slipping on the platen 3 by the waist force of the recording sheet 2.

According to the above construction, by arranging the position of the pinch roller slightly moving, the recording paper 2 can be conveyed so as to be urged onto the platen 3, and the recording paper 2 at the recording position can be conveyed. The smoothness can be maintained, the distance between sheets can be stabilized, high image quality can be maintained at low cost, and the reliability of the apparatus can be improved. Further, even when the recording paper 2 has some irregularities such as wrinkles, the recording paper 2 is forcibly urged onto the platen 3, so that recording can be performed on various recording materials.

[Second Embodiment] Next, another configuration of the recording apparatus shown in the first embodiment will be described with reference to FIG.
Since the schematic structure of the apparatus is the same as that of the first embodiment, the same members are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, the horizontal center axis of the spurs 13 is displaced. Hereinafter, this configuration will be described in detail.

In FIG. 3, the horizontal central axes of the feeding roller 10 and the pinch roller 11 are on the same straight line. Further, the central axes of the discharge roller 12 and the spur 13 in the horizontal direction are deviated from each other by the distance B toward the upstream side in the recording conveyance direction. Since the recording paper 2 is discharged upward due to the deviation of the center axis of the spurs 13, the portion of the recording paper 2 on the upstream side of the spurs 13 is conveyed while being biased by the platen 3. Spur here 13
It is needless to say that the deviation amount B of the central axis of B is smaller than the radius R ₂ of the discharge roller 12, but considering the reliability of the apparatus, it is preferable that B ≦ R ₂ sin 30 °.

As for the positional relationship between the platen 3 and each roller, the contact portion between the feeding roller 10 and the pinch roller 11 is flush with the sheet passing surface (upper surface) of the platen 3. Also the discharge roller
The contact portion between 12 and the spur 13 is arranged above the sheet passing surface (upper surface) of the platen 3 (on the cartridge side). This is because the recording paper 2 is conveyed upward by the discharge roller 12 and the spur 13 and the upstream side of the recording paper 2 is urged to the platen 3.

The peripheral speed relationship between the feed roller 10 and the discharge roller 12 is set to v ₁ ≧ v ₂ when the peripheral speed of the feed roller 10 is v ₁ and the peripheral speed of the discharge roller 12 is v _2. In order to press the recording paper 2 onto the platen 3 with the feeding roller 10, the discharging roller 12 applies a brake. At this time, if the conveying force of the discharge roller 12 is large, the recording paper 2 is bent upward in the platen 3. Therefore, the conveying force of the discharge roller 12 is sufficiently weakened so that the recording sheet 2 is conveyed while slipping on the platen 3 by the waist force of the recording sheet 2.

According to the above construction, the recording paper 2 is placed on the platen 3 by arranging the spur 13 by slightly moving it.
The recording sheet 2 can be conveyed so as to be urged upward, the smoothness of the recording sheet 2 at the recording position can be maintained, the distance between sheets can be stabilized, and high image quality can be maintained at low cost. It is possible to improve the reliability of the device.

[Third Embodiment] Next, another configuration of the recording apparatus shown in the first embodiment will be described with reference to FIG.
Since the schematic structure of the apparatus is the same as that of the first embodiment, the same members are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, the pinch rollers 11 and the spurs 13 are arranged such that the positions of the central axes thereof in the horizontal direction are shifted. Hereinafter, this configuration will be described in detail.

In FIG. 4, the central axes of the feeding roller 10 and the pinch roller 11 in the horizontal direction are deviated from the central axis of the pinch roller 11 by a distance A downstream in the recording paper conveyance direction. The recording paper 2 is conveyed downward due to the displacement of the center axis of the pinch roller 11, and after the leading edge hits the platen 3,
The platen 3 is conveyed while being urged by the upper surface of the platen 3. At this time, the recording paper 2 is curved at the contact portion with the platen 3, and the recording paper 2 is conveyed while being biased by the platen 3 due to this bending. It is needless to say that the displacement A of the central axis of the pinch roller 11 is smaller than the radius R ₁ of the feeding roller 10, but considering the reliability of the apparatus, it is preferable that A ≦ R ₁ sin 30 °.

Regarding the horizontal center axis of the discharge roller 12 and the spur 13, the center axis of the spur 13 is located at a distance B upstream in the recording and conveying direction.
Just shifted. Since the recording paper 2 is discharged upward due to the displacement of the center axis of the spur 13, the spur of the recording paper 2 is increased.
The part upstream of 13 is conveyed while being biased by the platen 3. It is needless to say that the shift amount B of the center axis of the spur 13 is smaller than the radius R ₂ of the discharge roller 12, but considering the reliability of the apparatus, it is preferable that B ≦ R ₂ sin 30 °.

The positional relationship between the platen 3 and the rollers is such that the contact portion between the feeding roller 10 and the pinch roller 11 is above the sheet passing surface (top surface) of the platen 3 (on the cartridge side). This conveys the recording paper 2 downward by the feeding roller 10 and the pinch roller 11,
This is to urge the downstream side of the platen 3 toward the platen 3. Further, the contact portion between the discharge roller 12 and the spur 13 is also arranged above the sheet passing surface (upper surface) of the platen 3 (on the cartridge side). This is the recording paper 2 by the discharge roller 12 and the spur 13.
This is because the sheet is conveyed upward and the upstream side of the recording paper 2 is biased to the platen 3.

The peripheral speed relationship between the feed roller 10 and the discharge roller 12 is set to v ₁ ≧ v ₂ when the peripheral speed of the feed roller 10 is v ₁ and the peripheral speed of the discharge roller 12 is v _2. In order to press the recording paper 2 onto the platen 3 with the feeding roller 10, the discharging roller 12 applies a brake. At this time, if the conveying force of the discharge roller 12 is large, the recording paper 2 is bent upward in the platen 3. Therefore, the conveying force of the discharge roller 12 is sufficiently weakened so that the recording sheet 2 is conveyed while slipping on the platen 3 by the waist force of the recording sheet 2.

According to the above construction, the pinch roller 11 and the spur 13 are slightly moved and disposed, so that the recording paper 2 is placed on the platen 3 more accurately than in the first and second embodiments. The sheet can be conveyed so as to be urged, the smoothness of the recording paper 2 at the recording position can be maintained with high accuracy, the distance between the sheets can be further stabilized, and high image quality can be maintained at low cost. Therefore, the reliability of the device can be further improved.

[Fourth Embodiment] In each of the above-described embodiments, the ink jet recording system is used as the recording means, but the electrothermal converter is energized according to the recording signal and the heat applied by the electrothermal converter is applied. It is more preferable that the recording is performed by ejecting the ink from the ejection port due to the growth and contraction of the bubbles generated in the ink by utilizing the film boiling generated in the ink by the energy.

With regard to its typical structure and principle, it is preferable to use the basic principle disclosed in, for example, US Pat. Nos. 4,723,129 and 4740796. This method can be applied to both the so-called on-demand type and continuous type, but in the case of the on-demand type in particular, it is arranged corresponding to the sheet or liquid path holding the liquid (ink). By applying at least one drive signal to the electrothermal transducer, which corresponds to the recorded information and gives a rapid temperature rise beyond nucleate boiling,
This is effective because heat energy is generated in the electrothermal converter to cause film boiling on the heat acting surface of the recording head, and as a result, bubbles in the liquid can be formed in a one-to-one correspondence with this drive signal. Due to the growth and contraction of the bubbles, the liquid is ejected through the ejection openings to form at least one droplet. It is more preferable to make this drive signal into a pulse shape because bubbles can be grown and contracted immediately and appropriately, so that particularly excellent liquid ejection can be achieved.

As the pulse-shaped driving signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. If the conditions described in US Pat. No. 4,313,124 of the invention relating to the rate of temperature rise on the heat acting surface are adopted, more excellent recording can be performed.

As the constitution of the recording head, in addition to the combination constitution of the ejection 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. The present invention also includes configurations using US Pat. Nos. 4,558,333 and 4,459,600, which disclose configurations in which the heat acting portion is arranged in a bending region.

Further, JP-A-59-123670, which discloses a structure in which a common slit is used as a discharge portion of a plurality of electrothermal converters, and an opening for absorbing a pressure wave of thermal energy are disclosed. Japanese Patent Laid-Open Publication No.
The effect of the present invention is effective even if the configuration is based on Japanese Patent Publication No. 59-138461. That is, according to the present invention, recording can be surely and efficiently performed regardless of the form of the recording head.

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 which can be recorded by the recording apparatus. Such a recording head may have a structure that satisfies the length by combining a plurality of recording heads or a structure as one recording head integrally formed.

In addition, even in the case of the serial type described above, when it is mounted on the recording head fixed to the carriage or the carriage, it is possible to electrically connect to the apparatus main body and supply the ink from the apparatus main body. A replaceable chip type recording head or the like may be used.

Further, it is preferable to add a recovery means for the recording head, a preliminary auxiliary means, etc., which are provided as a constituent of the recording apparatus of the present invention, because the effects of the present invention can be further stabilized. Specifically, these are capping means, cleaning means, pressurizing or suctioning means for the recording head, preheating means by electrothermal conversion type or other heating element or a combination thereof, and recording. It is also effective to perform a stable recording by performing a preliminary discharge mode in which another discharge is performed.

Regarding the type and number of recording heads mounted on the carriage, for example, only one recording head 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 of only the mainstream color such as black, but may be a combination of a plurality of recording heads integrally formed, but a mixed color of different colors or a mixed color It is also applicable to a device with at least one of the full colors according to

In addition, although the ink is described as a liquid in the above-mentioned embodiments, it is an ink which solidifies at room temperature or lower and softens or liquefies at room temperature, or the ink jet recording system. 30 inks
Generally, the temperature is controlled in the range of ℃ or more and 70 ℃ or less to control the temperature of the ink so that the viscosity of the ink is in the stable ejection range. good. In addition, it is possible to prevent the temperature rise due to thermal energy from being positively used as the energy for changing the state of the ink from the solid state to the liquid state, or to use ink that solidifies when left standing for the purpose of preventing ink evaporation. However, in any case, when heat ink is liquefied by applying heat energy according to the recording signal and liquid ink is ejected, or when the ink reaches the recording sheet, it begins to solidify. It is also applicable when using an ink that has the property of being liquefied for the first time by energy.

The ink in such a case is disclosed in JP-A-54-5.
As described in Japanese Patent No. 6847 or Japanese Patent Laid-Open No. 60-71260, a mode in which it is opposed to the electrothermal converter in a state of being held as a liquid or a solid in the concave portion or through hole of the porous sheet. Also good. The most effective one for each of the above-mentioned inks is to execute the above-mentioned film boiling method.

Further, as the form of the above-mentioned ink jet recording device, besides the one used as an image output terminal of an information processing device such as a computer, a form of a copying device combined with a reader or the like, and a form of a facsimile device having a transmitting / receiving function. It may be something to take.

Although an example of using the ink jet recording method as the above-mentioned recording means has been described, the present invention is not limited to the ink jet recording method, and other thermal transfer recording methods, heat sensitive recording methods, and Can also be applied to a recording method other than the impact recording method such as the wire dot recording method. Further, it is not necessary to limit to the serial recording method, and a so-called line recording method may be used.

[0047]

As described above, according to the present invention, the guide means is provided on the upstream side, the downstream side, or both sides of the platen in the conveying direction of the recording material, and the guiding means urges the recording material on the platen. By guiding to
The smoothness of the recording material at the recording position can be maintained with high accuracy, the distance between sheets can be further stabilized, high image quality can be maintained at low cost, and the reliability of the apparatus can be improved. Is possible. Even if the recording material has some irregularities such as wrinkles, the recording material is forcibly urged onto the platen, so that recording can be performed on various recording materials.

[Brief description of drawings]

FIG. 1 is a perspective explanatory diagram illustrating a schematic configuration of a recording apparatus according to a first embodiment.

FIG. 2 is a cross-sectional explanatory diagram of the recording apparatus.

FIG. 3 is a cross-sectional explanatory diagram of a recording apparatus according to a second embodiment.

FIG. 4 is a cross-sectional explanatory diagram of a recording apparatus according to a third embodiment.

FIG. 5 is a cross-sectional explanatory diagram of a conventional recording device.

[Explanation of symbols]

 1 ... Inkjet cartridge 2 ... Recording paper 3 ... Platen 4 ... Carriage 5 ... Pulley 6 ... Timing belt 7 ... Guide rail 8 ... Paper feed tray 9 ... Pickup roller 10 ... Feeding roller 11 ... Pinch roller 12 ... Ejection roller 13 ... Spur 14 ... Ejection tray

Front page continued (72) Inventor Atsushi Saito 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Shigeyuki Sugiyama 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (12)

[Claims] 1. A recording means for recording on a recording material according to image information, a platen for supporting the recording material in an image forming section, and an upstream provided upstream of the platen in the recording material conveying direction. And a side guide unit, wherein the upstream side guide unit guides the recording material in a direction to urge the recording material onto the platen. 2. The upstream guide means is a pair of feeding rollers, and only the upper feeding roller facing the platen is displaced by a predetermined amount to the downstream side in the recording material feeding direction, and the feeding roller pair is provided. 2. The recording apparatus according to claim 1, wherein the contact portion of the recording medium is arranged so as to be closer to the recording means than the platen. 3. When the radius of the lower feeding roller on the platen side of the pair of feeding rollers is R ₁ and the shift amount of the upper feeding roller to the downstream side in the recording material conveyance direction is A, The recording apparatus according to claim 2, wherein the recording apparatus is configured so that A ≦ R ₁ sin 30 °. 4. A pair of discharge rollers for conveying the recording material is provided downstream of the platen in the recording material conveyance direction, the peripheral speed of the feeding roller pair is v ₁ , and the conveying force is F ₁ . wherein when the peripheral speed of the discharge roller pair v _2, the conveying force and _{F 2, v 1 ≧ v 2} F 1 »F 2 recording apparatus according to claim 2, characterized in that is configured to hold. 5. A recording means for recording on a recording material according to image information, a platen for supporting the recording material in an image forming section, and a downstream provided downstream of the platen in the recording material conveying direction. And a side guide unit, wherein the downstream guide unit guides the recording material in a direction away from the platen. 6. The downstream guide means is a pair of discharge rollers, and shifts only the upper discharge roller facing the platen toward the upstream side in the recording material conveying direction by a predetermined amount, and the contact portion of the discharge roller pair. 6. The recording apparatus according to claim 5, wherein the recording medium is arranged so as to be closer to the recording means than the platen. 7. If the radius of the lower discharge roller on the platen side of the pair of discharge rollers is R ₂ and the shift amount of the upper discharge roller to the upstream side in the recording material conveying direction is B, then B ≦ R 7. The recording apparatus according to claim 6, wherein the recording apparatus is configured to have ₂ sin 30 °. 8. A pair of feeding rollers for feeding the recording material is provided upstream of the platen in the feeding direction of the recording material, the peripheral speed of the feeding roller pair is v ₁ , and the feeding force is F _1. , the peripheral speed of the discharge roller pair v _2, when the conveying force and _{F 2, v 1 ≧ v 2} F 1 »F 2 recording apparatus according to claim 6, wherein a is configured to hold. 9. A recording means for recording on a recording material according to image information, a platen for supporting the recording material in an image forming section, and an upstream provided upstream of the platen in the recording material conveying direction. Side guide means, and downstream guide means provided on the downstream side of the platen in the recording material transport direction, the upstream guide means guides the recording material in a direction for urging the recording material onto the platen, The recording apparatus, wherein the downstream guide unit guides the recording material in a direction away from the platen. 10. The recording apparatus according to claim 1, wherein the recording apparatus is an inkjet recording method in which a recording unit ejects ink in accordance with a signal to perform recording. 11. The recording device according to claim 10, wherein the recording device includes an electrothermal converter for generating thermal energy for ejecting ink by the recording means. 12. The recording apparatus according to claim 11, wherein the recording means ejects the ink from the ejection port by utilizing the film boiling generated in the ink by the thermal energy printed by the electrothermal converter. The recording device described.