JP2000302307A - Ink jet recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent soil on the recording surface of a material to be recorded, by preventing the contact of the portion, easy to be protruded of the material to be recorded to be nippedly carried by carrying and pinching rollers, with a recording head, to surly prevent the contact between the material to be recorded during carrying it and the recording head. SOLUTION: In a carrying path downstream side at every gap between plural adjoining pinching rollers 5 for nippedly carrying materials to be recorded together with a carrying roller 4, regulating rotors 14, contacting the recording surface sides of the materials to displace the materials to the back surface side, are arranged in positions entered into the back surface sides from the recorded surface sides of the materials in the carrying path.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording apparatus for performing ink jet recording on a recording material by an ink jet recording means, and more particularly, to an ink jet recording apparatus provided with a conveying means for conveying a recording material capable of causing uneven deformation. .

[0002]

2. Description of the Related Art A recording apparatus having functions such as a printer, a copying machine, and a facsimile, or a recording apparatus used as an output apparatus such as a composite electronic device including a computer or a word processor or a workstation is provided with image information (recording information). ) Based on the ink jet recording method for performing recording by discharging ink onto a recording material (recording medium) such as paper, cloth, plastic sheet, OHP sheet, and the like. Also, there are various requirements for the material of these recording materials. In recent years, developments in response to these requirements have progressed, and paper (including thin paper and processed paper) and resin thin plates (OHP sheets) which are ordinary recording materials have been developed. etc)
In addition to the above, a recording apparatus using cloth, leather, nonwoven fabric, metal, or the like as a recording material has been used.

In the above-described recording apparatus such as a printer, a copying machine, a word processor, a personal computer, and a facsimile, a conveying roller for conveying the recording material and a pressing mechanism for pressing the conveying roller are used as a conveying mechanism for the recording material. A plurality of pinch rollers arranged in a straight line, a plurality of paper ejection rollers arranged in a straight line for discharging the recording material after recording, and a plurality of ejection rollers arranged in opposition to the paper ejection roller for discharging the recording material. And a discharge spur (discharge rotating body).

FIG. 8 is a partial plan view showing a main part of a recording material transport mechanism of a conventional recording apparatus. In FIG. 8, a recording material (not shown) is sandwiched between a conveyance roller 4 and a plurality of divided pinch rollers 5, and is further conveyed along a platen 10 arranged opposite to a recording unit. A record is made. A recording material (not shown) after recording is discharged while being sandwiched between a discharge roller 11 and a discharge spur (discharge rotating body) 12. As shown in FIG. 8, a plurality of discharge rollers 11 and a plurality of spurs 12 are arranged to face each other in a width direction of a recording material (not shown) (a direction orthogonal to a conveying direction of the recording material). Have been. Numeral 13 in FIG. 8 denotes a close-wound spring having a function as a pressing means for pressing the discharging spur 12 against the recording material. In the configuration of FIG. 8, a paper press spur (a paper press rotating body) as described later is not particularly provided.

Japanese Patent Application Laid-Open No. Sho 59-188467 discloses that a sheet is conveyed to a position facing an ink jet print head by a platen roller and two pinch rollers for sandwiching the vicinity of both ends of the sheet. An ink jet printer that uses a roller having a large number of serrated protrusions between two paper holding rollers that sandwich each of the vicinity to prevent the paper from floating from the platen roller and prevent contact between the print head and the paper. Is described. However, the paper is only pressed by the platen roller in the vicinity of both ends thereof. Further, since the roller having the serrated protrusion is disposed in the air away from the platen roller, the contact between the print head and the paper is ensured. Could not be prevented. This is especially true when the amount of ink droplets applied to the paper is dramatically increased, such as in full-color printing.

Japanese Patent Application Laid-Open No. 09-193373 discloses an ink jet printer having a paper press spur for holding down a recording material in order to prevent the recording material after recording from becoming convex. I have. This paper press spur is
This is a spur that does not have an opposing paper ejection roller. In addition, a pressing means is provided on a paper holding spur having no discharge roller opposed thereto, the recording material is always pressed, and the portion of the recording material facing the paper holding spur is previously concave to form a recording material. There is also proposed a recording apparatus configured to discharge the recording material while controlling a position where a concavo-convex shape called cockling occurs in the recording medium. FIG. 9 is a partial plan view showing a main part of a conventional recording material transport mechanism provided with a paper holding spur 14 having no paper discharge roller 11 opposed thereto.
9, the same reference numerals as those in FIG. 8 denote the same or corresponding parts, and the reference numeral 13 denotes a spur 12 for discharging.
And a close-wound spring having a function as a pressing means for pressing the paper holding spur 14 against the recording material.

[0007]

However, FIG. 8 and FIG.
The conventional recording material transport mechanism shown in FIG. 1 has the following disadvantages. First, in the transport mechanism having no paper pressing spur as shown in FIG. 8, a convex shape is likely to be generated on the recording material in a portion of a gap between adjacent pinch rollers on the downstream side in the recording material transport direction, The recording material comes into contact with the recording means (recording head), and the recording surface of the recording material may be stained.

Second, even if the pinch roller 5 is divided into a plurality of parts as shown in FIG. When the position of the pinch roller 5 for pressing the recording material and the positions of the ejection spur 12 and the paper pressing spur 14 for pressing the downstream side are viewed in the width direction of the recording material, the position for pressing the recording material is the upstream side of the recording area. Since they are arranged at a pitch that has no correlation with the downstream side, the balance between the positions where the recording material is pressed on the upstream side and the downstream side of the recording area is poor. Therefore, the paper holding spur 14 is arranged on the downstream side. Also, in the recording area, the recording material becomes concave instead of convex, and the position of occurrence of unevenness due to cockling of the recording material cannot be controlled. May get dirty.

SUMMARY OF THE INVENTION The present invention has been made in view of such technical problems, and an object of the present invention is to prevent a recording material being conveyed from coming into contact with an ink jet recording means with a simple configuration. It is an object of the present invention to provide an ink jet recording apparatus which can prevent the recording surface of the recording material from being stained.

[0010] Another object of the present invention is to reliably control the occurrence of uneven deformation that can occur in a recording material nipped and conveyed by a conveyance roller and a pinch roller, thereby allowing the recording material and the ink jet recording means to move between the recording material and the ink jet recording means. An object of the present invention is to provide an ink jet recording apparatus capable of preventing contact beforehand.

Another object of the present invention is to provide a recording medium which is nipped and conveyed by a conveying roller and a pinch roller, and a convex deformed portion which is likely to be generated at a portion corresponding to a gap between adjacent pinch rollers. An object of the present invention is to provide an ink jet recording apparatus capable of preventing a situation in which the ink jet recording apparatus contacts with a recording medium.

[0012]

In order to achieve the above object, the present invention (claim 1) provides an ink jet recording apparatus for performing recording on a recording material using an ink jet recording means. An inkjet recording area where the inkjet recording is performed, a transport path for transporting the recording material in the inkjet recording area in opposition to the inkjet recording unit, and an upstream side of the transport path of the inkjet recording area; A transport roller for guiding the recording material to the ink jet recording area, and a plurality of pinch rollers arranged at predetermined intervals in the axial direction of the transport roller, and pinching the recording material together with the transport roller, A regulating circuit disposed downstream of the transport path for each gap between the adjacent pinch rollers The regulating rotator is disposed on the downstream side of the transport path of the inkjet recording area and is located at a position entering the back side from the recording surface side of the recording material with respect to the transport path. The recording material is displaced toward the back surface side in contact with the recording surface side of the recording material.

According to the first aspect of the present invention, the recording material corresponds to a portion which tends to be convex after recording, that is, a region between the adjacent pinch rollers on the downstream side in the recording material transport direction. It is possible to prevent the portion of the recording material from coming into contact with the ink jet recording means. Thus, the recording surface of the recording material can be prevented from being stained. Also,
The position of the pinch roller that presses the upstream side of the recording region of the recording material and the position of the discharge rotating body (for example, the spur for discharge) that presses the downstream side are located upstream of the recording region when viewed from the width direction of the recording material. Since the arrangement is performed at a well-balanced pitch that is correlated on the downstream side and the downstream side, it is possible to reliably control the position at which the unevenness of the cockling of the recording material occurs, and the recording material contacts the ink jet recording means to change the recording surface. Stain can be prevented.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the regulating rotator is configured to transport all of the gaps with respect to a pinch roller used for transporting the recording material. A configuration disposed on a downstream side of the path, a configuration in which the restricting rotator is also disposed on a downstream side of the conveyance path of the pinch roller, and a recording material on the downstream side of the conveyance path in the inkjet recording area; A discharge roller for discharging the recording material from the ink jet recording area in contact with the back surface of the recording medium; and a configuration in which the discharge roller does not come into contact with the regulating rotary member. A configuration in which a discharge rotating body that contacts the surface side and pinches and conveys the recording material with the discharge roller is arranged;
Alternatively, the discharge roller is a member in which large-diameter portions and small-diameter portions are alternately arranged in the axial direction. The large-diameter portion is provided with the discharge rotating body, and the small-diameter portion is adjacent to the large-diameter portion. The above object can be achieved more efficiently by adopting a configuration in which the restricting rotating body enters between the diameter portions and is arranged in non-contact with the small diameter portion.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view showing a recording material conveying path of a recording apparatus suitable for applying the present invention. In FIG. 1, reference numeral 4 denotes a transport roller, and 5 denotes a pinch roller. The pinch roller 5 is urged (pressed) toward the transport roller 4 by a spring (not shown). Pinch roller 5
Is to convey a sheet-like recording material such as recording paper in the conveying direction (the direction of arrow A in the figure) in cooperation with the conveying roller 4. The transport roller 4 is driven to rotate by a transport motor (not shown), and the recording material 3 is transported by a predetermined amount as the transport roller 4 rotates by a predetermined amount.

A PE sensor lever 1 and a PE sensor 2 are provided upstream of the transport roller 4 and the pinch roller 5 in the direction of transport of the recording material. Material detection means is configured. A guide shaft 9 extending in a direction perpendicular to the conveying direction A of the recording material 3 is installed in the apparatus main body. A carriage 8 is guided and supported along the guide shaft 9 so as to be able to reciprocate. On the carriage 8, a recording head 7 as a recording unit is mounted. The recording head 7 forms (records) an image on the recording material 3 transported onto the platen 10 by the transport roller 4 and the pinch roller 5. In this manner, the recording section 6 is constituted by the recording head 7 and the carriage 8 disposed at a position facing the platen 10.

The recording head 7 is an ink-jet recording head (ink-jet recording means) for selectively discharging ink from a plurality of discharge ports for recording by applying energy according to a recording signal. The recording head 7 is an ink jet recording means for discharging ink using thermal energy, and includes an electrothermal converter for generating thermal energy. Further, the recording head 7 performs recording by discharging ink from a discharge port using a pressure change generated by growth and shrinkage of bubbles caused by film boiling caused by thermal energy applied by the electrothermal transducer. It is. The electrothermal transducer is provided corresponding to each of the ejection ports, and discharges ink from the corresponding ejection port by applying a pulse voltage to the corresponding electrothermal transducer in accordance with a recording signal.

FIG. 5 is a partial perspective view schematically showing the structure of an ink ejection section (one ejection port array) of the recording head (inkjet recording means) 7. In FIG. 5, the recording material 3
A plurality of discharge ports 82 are formed at a predetermined pitch on a discharge surface 81 which faces with a predetermined gap (for example, about 0.3 mm to 2.0 mm), and a common liquid chamber 83 and each discharge port 82 are formed. An electrothermal converter (heating resistor, etc.) 85 for generating energy for ink ejection is provided along the wall surface of each liquid path 84 that communicates with the fluid path. The recording head 7 is guided and supported in a positional relationship such that the discharge ports 82 are arranged in a direction crossing the main scanning direction (the moving direction of the carriage 8 in this embodiment mounted on the carriage 8). Thus, the corresponding electrothermal transducer 85 is driven (pulse voltage is applied) based on the image signal or the ejection signal, and the liquid path 84 is applied.
An ink jet recording unit (recording head) 7 is configured to cause ink in the film to boil and eject ink droplets from the ejection port 82 by a pressure generated at that time.

In FIG. 1, reference numeral 12 denotes a discharge spur as an example of a discharge rotating body, which is pressed against the discharge roller 11 by a spring (not shown) and functions as a pinch roller of the discharge roller 11. The discharge roller 11 and the discharge spur 12 cooperate to discharge the recording material 3 onto a discharge tray (not shown) without soiling the recording surface 3a of the recording material 3 on which recording has been performed. . Note that spurs include those that continuously contact the recording material at the peripheral end and those that intermittently contact the recording material.

FIG. 2 is a partial plan view of the recording material conveying means of the recording apparatus to which the present invention is applied, as viewed from above. In FIG. 2, a plurality of pinch rollers 5 are arranged in a straight line on the transport roller 4. Reference numeral 14 denotes a paper pressing spur as an example of a regulating rotating body. A plurality of paper pressing spurs 14 are arranged at positions downstream of all gaps between the pinch rollers 5 in the recording material transport direction. . In other words, each paper holding spur 14 is arranged at a position downstream of all gaps between the adjacent pinch rollers 5 in the recording material transport direction.
It is not necessary to dispose the paper pressing spur (rotating body for regulation) 14 to the end in the recording material width direction where the recording material 3 does not pass, and the recording material substantially passes (conveys). )
What is necessary is that it is arranged on all downstream sides of the gap in the region to be formed.

A plurality of discharge rollers (discharge rollers 11) for discharging the recording material 3 after recording, and an arrangement cooperating with each discharge roller 11 for discharging the recording material 3 are provided. A plurality of discharge spurs (the discharge spur 1
2) are arranged at a plurality of positions in the direction crossing the conveying direction of the recording material 3 one by one. 1
Reference numeral 3 denotes a close-wound spring, and the close-wound spring 13 functions as a pressing unit that presses the ejection spur (discharge rotating body) 12 and the paper pressing spur (regulation rotating body) 14 against the recording material 3. have. In the configuration of FIG. 2, the paper holding spurs 14 are aligned with the respective discharging spurs 12 when viewed from above, and are alternately arranged with the respective discharging spurs 12.

As shown in FIG. 2, by arranging the pinch roller 5, the discharging spur 12, and the paper pressing spur 14, a portion of the recording material that tends to be convex after recording, that is, the adjacent pinch rollers 5, 5 The portion of the gap on the downstream side in the recording material transport direction contacts the recording head 7 and the recording surface 3a of the recording material
Can be prevented from becoming dirty. In addition, the recording material 3
As described above with reference to FIG. 2, the position of each pinch roller 5 pressing the upstream side of the recording area and the position of each ejection spur 12 and each paper holding spur 14 pressing the downstream side are well-balanced as described above with reference to FIG. Since the pitch position is selected, it is possible to reliably control the position where the cockling of the recording material 3 is generated, thereby preventing the recording material 3 from contacting the recording head 7 and soiling the recording surface 3a. Can be.

FIG. 3 is a partial front view for explaining the height positions of the discharge spur 12 and the paper pressing spur 14 with respect to the discharge roller 11 of the recording material conveying means in FIG. In FIG. 3, the lower surface of the paper press spur 14 is
1 are arranged below the upper surface of the first member 1. By selecting the height of the paper holding spur 14 in this manner, a portion that tends to become convex after recording on the recording material 3, that is,
The portion of the gap between the adjacent pinch rollers 5, 5 on the downstream side in the recording material transport direction can be reliably made concave, whereby the recording material 3 comes into contact with the recording head 7 and its recording surface 3a. Can be reliably prevented from being soiled.

Further, as shown in FIG. 2, the discharging spur 12 and the paper pressing spur 14, which press the downstream side of the recording area of the recording material, are arranged in a straight line when viewed from above, so that the recording material 3 Variations in the position of pressing the downstream side of the recording area can be reduced, whereby the upstream side and the downstream side of the recording area of the recording material 3 can be pressed in a more balanced manner. It is possible to more reliably control the position where the unevenness of the ring occurs. Thereby, it is possible to prevent the recording material 3 from contacting the recording head 7 and soiling the recording surface 3a.

FIG. 4 is a partial front view showing a state in which the end of the recording material 3 is pressed by the paper pressing spur 14 in the recording material conveying means of FIG. In the recording material transport mechanism described with reference to FIGS. 2 and 3, as shown in FIG. 4, a paper holding member is not provided at the end of the recording material 3 in the width direction, instead of the pair of the discharge roller 11 and the discharge spur 12. With the configuration in which the spurs 14 are arranged, it is possible to prevent the end of the recording material 3 from contacting the recording head 7 by warping. That is,
The arrangement state of the plurality of paper holding spurs 14 is set such that one of the arrangements is at a position where the widthwise end of the recording material 3 is pressed, so that the end of the recording material 3 warps and contacts the recording head 7. As a result, it is possible to prevent the end of the recording surface 3a of the recording material from being stained or the recording head 7 from being damaged. Also, the paper press spur 14 disposed at the end of the recording material 3 is arranged so that the lower surface thereof is lower than the upper surface of the discharge roller 11, so that the recording head 7 of the recording material 3 can be more reliably. Contact can be prevented.

FIG. 6 is a partial plan view showing a main part of a recording material transport mechanism of a second embodiment of the recording apparatus to which the present invention is applied, as viewed from above. This embodiment is different from the first embodiment in that the arrangement of the paper holding spurs 14 with respect to the ejection spurs 12 is changed. That is, in FIG. 6, the paper pressing spurs 14 are arranged in a different row from the ejection spurs 12 as viewed from above (in the example shown, a row that is not on a straight line upstream of the ejection spurs 12 in the recording material transport direction). ing. The second embodiment of FIG. 6 is different from the first embodiment of FIG. 2 in this respect, and has substantially the same configuration in other respects. Detailed description is omitted.

According to the second embodiment shown in FIG. 6, the paper holding spur 14 and the discharging spur 12 are arranged in a straight line as shown in FIG.
Can be narrowed, and the number of the paper holding spurs 14 and the discharging spurs 12 that are alternately arranged can be increased accordingly. Accordingly, the size of the unevenness of the cockling of the recording material 3 can be reduced by that much, and the recording material 3 can be more effectively prevented from contacting the recording head 7 and soiling the recording surface. it can.

Also, in the second embodiment shown in FIG.
As shown in FIG.
Is disposed below the upper surface of the recording material 3, a portion that tends to be convex after recording of the recording material 3, that is, a portion of the gap between the adjacent pinch rollers 5, on the downstream side in the recording material transport direction. The recording material 3 can reliably contact with the recording head 7 so that the recording surface 3
a can be reliably prevented from being stained. In addition, as shown in FIG. 4 of the first embodiment, the arrangement state of the plurality of paper pressing spurs 14 is set such that the paper pressing spur 14 (the pair of the discharging roller 11 and the discharging spur 12 not)
When the end of the recording material 3 is warped, it is possible to prevent the end from contacting the recording head 7 and to contaminate the recording material. .

FIG. 7 is a partial plan view showing a main part of a recording material transport mechanism of a third embodiment of the recording apparatus to which the present invention is applied, as viewed from above. The present embodiment shows a configuration suitable for implementation when the number of pinch rollers 5 is small and therefore the length of each pinch roller 5 is long. In FIG. 7, the pinch roller 5 has a small number of divisions, so that each pinch roller 5 has a relatively long dimension. Therefore, the plurality of paper pressing spurs 14 are located at positions on the downstream side of the gap between the adjacent pinch rollers 5 and 5 in the recording material transport direction and in the recording material transport direction of each pinch roller 5 (substantially at the center). It is arranged at each position on the downstream side.

According to the third embodiment shown in FIG. 7, even if the number of divided pinch rollers 5 is small and therefore each pinch roller 5 is long, a portion which is likely to be convex after recording on the recording material 3, that is, the adjacent portion, The portion of the gap between the pinch rollers 5, 5 on the downstream side in the recording material conveyance direction can be reliably prevented from contacting the recording head 7, and at the same time, the portion of the pinch roller pressing portion of the recording material 3 The portion on the downstream side in the recording material transport direction can also be reliably prevented from contacting the recording head 7, thereby preventing the recording surface 3 a of the recording material 3 from being stained and the recording head 7 from being damaged.

Also, in the third embodiment shown in FIG.
As in the case of the embodiment, the position of the pinch roller 5 that presses the upstream side of the recording area of the recording material 3 and the position of the discharge spur 12 and the paper press spur 14 that press the downstream side are well-balanced. Since the position of the pitch is selected, it is possible to reliably control the position where the unevenness of the cockling of the recording material 3 occurs, whereby the recording material 3 comes into contact with the recording head 7 and the recording surface thereof is stained. In addition, it is possible to prevent the recording head 7 from being damaged. Further, also in the present embodiment, as shown in FIG. 3 of the first embodiment, the paper holding spur 14 is arranged so that the lower surface thereof is lower than the upper surface of the discharge roller 11, so that the recording of the recording material 3 can be performed. The portion of the gap between the adjacent pinch rollers 5, which is likely to be convex later, can be reliably concave at the downstream side in the recording material transport direction. 7, the recording surface 3a can be reliably prevented from being soiled or the recording head can be prevented from being damaged.

In addition, in the third embodiment shown in FIG. 7, as shown in the first embodiment shown in FIG. 4, a paper press spur 14 (a discharge spur 12 and a discharge roller 11) Is arranged so that the end of the recording material 3 contacts the recording head 7 when the end of the recording material 3 is warped, and the end of the recording material 3 is stained, The head can be prevented from being damaged.

Further, in the above embodiment, the recording apparatus of the serial recording system for performing recording while moving the recording head 7 relative to the recording material 3 has been described as an example. The present invention can be similarly applied to a recording apparatus of a line recording system in which recording is performed only by sub-scanning using a line type recording head having a length that covers the entire width or a part of the recording medium. In the case of a full-line type in which a large amount of ink droplets are adhered to the ink, further effects can be achieved.

The present invention also relates to a recording apparatus using one recording head, a color recording apparatus using a plurality of recording heads for recording in different colors, or a recording apparatus using a plurality of recording heads for recording the same color at different densities. Toner recording device, and further, in the case of a recording device for performing image recording by combining them, the same can be applied, in which a large amount of ink droplets are attached along with image recording,
Further effects can be achieved.

Further, in the present invention, in the case of an ink jet recording apparatus, a configuration using a replaceable ink cartridge in which a recording head and an ink tank are integrated, a recording head and an ink tank are separated, and a tube for supplying ink is provided between the recording head and the ink tank. The arrangement and the like can be applied to any arrangement of the recording head and the ink tank, such as the arrangement of connection with the same, and the same effect can be obtained.

The present invention can be applied to a case where the ink jet recording apparatus uses a recording means using an electromechanical transducer such as a piezo element.
In particular, the present invention brings about an excellent effect in an ink jet recording apparatus using a recording means of a method of discharging ink by using thermal energy. According to such a method, it is possible to achieve higher density and higher definition of recording.

As is apparent from the above description, according to the present embodiment, a recording section for recording on a recording material, a transport roller for transporting the recording material, and a plurality of rollers pressed by the transport roller. A pinch roller, a plurality of discharge rollers for discharging the recording material after recording, and a plurality of discharge spurs arranged to cooperate with each discharge roller for discharging the recording material, And a plurality of paper pressing spurs arranged to suppress paper floating of the recording material, wherein the paper pressing spur is located downstream of the gap between adjacent pinch rollers in the recording material transport direction. Because it was configured to be placed,
With a simple configuration, it is possible to prevent the downstream portion in the recording material transport direction of the gap between adjacent pinch rollers, which is a portion that tends to be convex after recording of the recording material, from contacting the recording means. Accordingly, there is provided a recording apparatus capable of reliably preventing the recording material being conveyed from contacting the recording means and preventing the recording surface of the recording material from being stained.

Further, since the paper pressing spur is arranged so that the lower surface of the paper pressing spur is lower than the upper surface of the discharge roller, the above-mentioned effect can be more efficiently achieved.

Still further, since the discharging spur and the paper pressing spur are arranged in a straight line, it is possible to reduce variation in the position of pressing the downstream side of the recording area of the recording material, It is possible to further improve the balance between the pressing position on the upstream side and the downstream side of the recording area of the recording material, and to more efficiently prevent the recording material from contacting the recording means and soiling the recording surface. it can.

Still further, since the discharging spur and the paper pressing spur are arranged at different positions in the recording material conveying direction, the distance between the paper pressing spur and the discharging spur is further reduced. The number of paper holding spurs and ejection spurs can be increased, the size of the occurrence of unevenness of the cockling of the recording material can be reduced, and the recording material contacts the recording means more efficiently. Thus, the recording surface can be prevented from being stained.

Further, a recording section for performing recording on the recording material, a transport roller for transporting the recording material, a plurality of pinch rollers pressed by the transport roller, and a discharge of the recording material after recording. A plurality of discharging rollers for discharging the recording material, a plurality of discharging spurs arranged to cooperate with each discharging roller for discharging the recording material, and a plurality of discharging spurs arranged to suppress the floating of the recording material. And a plurality of paper holding spurs, the paper holding spur is disposed downstream of the gap between adjacent pinch rollers in the recording material conveyance direction, and the pressing portion of the pinch roller is Since the paper pressing spur is arranged also on the downstream side in the recording material conveyance direction, even with a simple configuration, even if the pinch roller is long, it is a portion that is likely to be convex after recording of the recording material, between adjacent pinch rollers. To transport recording material in the gap It is possible to prevent the downstream portion from contacting the recording means, thereby reliably preventing the recording material being conveyed from contacting the recording means and preventing the recording surface of the recording material from being stained. A recording device is provided.

Further, since the paper press spur is arranged so that the lower surface of the paper press spur is lower than the upper surface of the discharge roller, the above-described effect can be more efficiently achieved with a simple configuration even when the pinch roller is long. An achievable recording device is provided.

Further, since the spur disposed at the widthwise end of the recording material is a paper pressing spur, in addition to the above-described effects, the end of the recording material warps and comes into contact with the recording head. Thus, a recording apparatus capable of preventing the end of the recording material from being stained is provided.

Further, since the lower surface of the paper pressing spur disposed at the end of the recording material is located below the upper surface of the discharge roller, the end of the recording material warps and comes into contact with the recording head. Thus, an effect is obtained that the edge of the recording material can be more reliably prevented from being stained.

[0045]

As is apparent from the above description, according to the first aspect of the present invention, in an ink jet recording apparatus for performing recording on a recording material using an ink jet recording means, ink jet recording is performed on the recording material by the ink jet recording means. An inkjet recording area where the recording is performed, a transport path for transporting the recording material in the inkjet recording area in opposition to the inkjet recording means, and an upstream side of the transport path of the inkjet recording area, A transport roller for guiding a material to the ink jet recording area; and a plurality of pinch rollers arranged at predetermined intervals in an axial direction of the transport roller and sandwiching the recording material together with the transport roller. A regulating rotation disposed downstream of the conveyance path for each gap between the pinch rollers The regulating rotator is disposed at a position downstream of the inkjet recording area on the transport path and at a position entering the back side from the recording surface side of the recording material with respect to the transport path, and Since the recording material is in contact with the recording surface side of the recording material and is displaced toward the rear surface side, a portion of the recording material which is easily conveyed while being nipped and conveyed by the conveying roller and the pinch roller with a simple configuration. The downstream portion of the gap between the pinch rollers in the conveyance direction can be prevented from contacting the ink jet recording means, thereby reliably preventing the recording material being conveyed from contacting the ink jet recording means. Provided is an ink jet recording apparatus capable of preventing a recording surface of a recording material from being stained.

According to the second to sixth aspects of the present invention, in addition to the configuration of the first aspect, the regulating rotator is provided with all of the gap portions with respect to a pinch roller used for conveying the recording material. A configuration disposed on the downstream side of the transport path; a configuration in which the restricting rotator is also disposed on the downstream side of the transport path of the pinch roller; A discharge roller for discharging the recording material from the ink jet recording area in contact with the back side of the recording material, and a configuration in which the discharge roller does not come into contact with the regulating rotary member; A discharge rotating body that is in contact with the recording surface side and pinches and conveys the recording material together with the discharge roller, or the discharge roller alternates between a large diameter portion and a small diameter portion in the axial direction. Arrangement The large-diameter portion is provided with the discharge rotating body, and the small-diameter portion is inserted between the adjacent large-diameter portions so that the regulating rotary body is not in contact with the small-diameter portion. , The above effects can be achieved more efficiently.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a recording material conveyance path of a recording apparatus suitable for applying the present invention.

FIG. 2 is a partial plan view of a recording material conveying unit of the recording apparatus to which the present invention is applied, as viewed from above.

FIG. 3 is a partial front view for explaining a height position of a spur for discharge and a paper press spur with respect to a discharge roller of the recording material conveying means in FIG. 2;

FIG. 4 is a partial front view showing a state in which the end of the recording material is pressed by a paper pressing spur in the recording material conveying means of FIG. 2;

FIG. 5 is a partial perspective view schematically illustrating a structure of an ink ejection unit of the recording unit in FIG.

FIG. 6 is a partial plan view showing a main part of a recording medium transport mechanism of a second embodiment of the recording apparatus to which the present invention is applied, as viewed from above.

FIG. 7 is a partial plan view showing a main part of a recording material transport mechanism of a third embodiment of the recording apparatus to which the present invention is applied, as viewed from above.

FIG. 8 is a partial plan view showing a main part of a recording material transport mechanism of a conventional recording apparatus.

FIG. 9 is a partial plan view showing a main part of a conventional recording material transport mechanism provided with a paper pressing spur having no discharge roller opposed thereto.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 PE sensor lever 2 PE sensor 3 Recording material (recording paper etc.) 3a Recording surface 4 Conveyance roller 5 Pinch roller 6 Recording part 7 Ink jet recording means (recording head) 8 Carriage 9 Guide shaft 10 Platen 11 Discharge roller 12 Discharge rotation Body (Spur for discharging) 13 Closely wound spring 14 Rotating body for regulation (Spur for paper pressing) 81 Discharge surface 82 Discharge port 83 Common liquid chamber 84 Liquid path 85 Electrothermal converter

Claims (8)

[Claims] 1. An ink jet recording apparatus for performing recording on a recording material using an ink jet recording means, wherein: an ink jet recording area where ink jet recording is performed on the recording material by the ink jet recording means; A transport path for transporting the inkjet recording device in a region facing the inkjet recording unit, and disposed on the transport path upstream of the inkjet recording area;
A transport roller for guiding the recording material to the ink jet recording area, and a plurality of pinch rollers arranged at predetermined intervals in an axial direction of the transport roller and pinching the recording material together with the transport roller, A regulating rotator disposed downstream of the transport path for each gap between the adjacent pinch rollers, wherein the regulating rotator is located downstream of the inkjet recording area on the transport path. An ink-jet recording apparatus, wherein the recording medium is displaced toward the back surface side in contact with the recording surface side of the recording material, disposed at a position where the recording medium enters the back surface side from the recording surface side of the recording material with respect to the transport path. Recording device. 2. The apparatus according to claim 1, wherein the regulating rotator is disposed downstream of all of the gaps with respect to a pinch roller used for conveying the recording material. Inkjet recording device. 3. The ink jet recording apparatus according to claim 1, wherein the restricting rotator is also arranged downstream of the pinch roller in the conveying path. 4. A discharge roller for discharging the recording material from the ink jet recording area in contact with the back side of the recording material is disposed downstream of the transport path of the ink jet recording area. The ink jet recording apparatus according to any one of claims 1 to 3, wherein the discharge roller does not contact the rotating body for regulation. 5. The ink jet printer according to claim 4, further comprising a discharge rotating body that contacts the recording surface of the recording material and pinches and conveys the recording material together with the discharge roller. Recording device. 6. The discharge roller is a member in which large-diameter portions and small-diameter portions are alternately arranged in the axial direction. The large-diameter portion is provided with the discharge rotating body, and the small-diameter portion is adjacent to the discharge roller. 6. The ink jet recording apparatus according to claim 5, wherein the restricting rotating body is disposed so as not to be in contact with the small-diameter portion so as to enter between the matching large-diameter portions. 7. The ink jet recording device according to claim 1, further comprising an electrothermal converter that generates thermal energy, and a recording device that ejects ink using the thermal energy generated by the electrothermal converter. Item 7. An ink jet recording apparatus according to any one of Items 1 to 6. 8. The ink jet recording apparatus according to claim 7, wherein said ink jet recording means discharges the ink from a discharge port using film boiling generated in the ink by thermal energy generated by the electrothermal transducer. apparatus.