JP2002362805A - Paper feeder and recording apparatus provided with the paper feeder - Google Patents

Abstract

(57) [Problem] To provide a sheet feeding device and a recording device which are not increased in size even by providing a curl correcting device for correcting curl of roll paper. A sheet feeding device 100 feeds a plurality of cut sheets _PT in an inclined posture, and a second feeding route for feeding a thick print medium from a lower rear portion of the device. It has. The roll paper P _R is supported on the rear side of the hopper 4 to be supported in an inclined position the cut paper P _T, is fed by using the second feed path. Curl straightening device 50 for removing curl of the roll paper P _R is the rear side space of the hopper 4, i.e., disposed at an acute angle side area of the triangle in which the first feed path and the second feed path to form Is done.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeder provided in a recording device such as a facsimile or a printer, and more particularly, to both a roll paper wound in a roll shape and a cut sheet cut to a predetermined size. The present invention relates to a sheet feeding device capable of setting a. Also,
The present invention relates to a recording device provided with the paper feeding device.

[0002]

2. Description of the Related Art In a recording apparatus typified by a facsimile, a printer or the like, a cut sheet cut in advance to a predetermined size (including a recording medium other than a paper medium such as an OHP sheet).
Also, roll paper capable of continuously recording over a long length is used as a recording medium (printing medium). In particular, in recent years, products that can set both cut-sheet paper and roll paper have become available in consumer printers.

[0003] Incidentally, since the roll paper is wound up in a roll shape, there is a problem that the curl habit remains even after being unwound from the roll body. If such a curl remains, for example, it becomes difficult for the user to handle the rolled paper that has been recorded and discharged, and it is also difficult to handle the roll paper during storage. Further, in the case where a cutter device for cutting roll paper to a predetermined size is provided in the paper discharge unit, the roll paper that has been cut into cut sheet curls on the paper discharge tray, so The roll paper that is discharged interferes with the curled roll paper on the paper discharge tray, and a problem arises in that stacking cannot be performed in an orderly and regular manner. In addition, there is also a problem that the leading end of the discharged roll paper rubs the recording surface of the roll paper already discharged to the discharge tray, thereby damaging the recording surface. In addition, in the case of an ink jet printer, the gap between the recording head that ejects ink droplets and the recording surface of the roll paper becomes non-uniform due to the curl of the roll paper, and the recording quality may deteriorate.

[0004]

In order to solve such a problem, some recording apparatuses using roll paper are provided with a curl correcting device for correcting the curl of the roll paper. However, in such a recording apparatus, a space for providing the curl correction apparatus is required, and there is a problem that the internal structure of the apparatus is complicated and the apparatus is enlarged.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a paper feeder and a recording apparatus which do not become large even by providing a curl correcting device for correcting the curl of roll paper. It is in.

[0006]

According to a first aspect of the present invention, there is provided a sheet supporting member comprising a plate-like body provided in an inclined position and supporting a cut sheet in an inclined position. And a feed path for the cut sheet that extends obliquely downward from obliquely upward along the inclined surface of the paper support member, and is provided on the back side of the paper support member, and rotatably supports the roll paper. Both the cut sheet and the roll sheet, comprising: a roll sheet holder; and a roll sheet feed path that passes downward from the back side of the sheet support member and joins the cut sheet feed path. A curl correcting device that corrects the curl by curling the roll paper in a direction opposite to the curl direction of the roll paper on a feed path of the roll paper. Wherein the curl straightening device comprises the inclined figure And it is provided by utilizing a space formed on the rear side of the sheet supporting member made provided a plate-like body.

According to the first aspect of the present invention, there is provided a curl correcting device for correcting the curl of roll paper by utilizing a space formed in a paper feeding device without increasing the size of the device. Becomes possible. That is, the sheet feeding device has a sheet supporting member formed of a plate-like body that is provided in an inclined posture and supports cut sheets in the inclined posture. Therefore, in the sheet feeding device, the space on the back side of the sheet supporting member formed of the plate-like body (formed on the obtuse side when the sheet supporting member provided in an inclined state is viewed from the side, and is substantially a right triangle in side view) Is a so-called dead space. In the paper feeder according to the first aspect of the present invention, the curl correction device is provided in the dead space. Therefore, the paper curl correction device only occupies the space that is necessarily formed by disposing the paper support member. The provision of the apparatus does not increase the size of the apparatus.

[0008] The paper feeder according to the second aspect of the present invention is the first aspect.
In the curl correction device, the curl correction device has a rotation axis perpendicular to the traveling direction of the roll paper, a rotatable curl correction roller that winds the roll paper in a direction opposite to the curl habit direction, A curling correction roller having a rotation axis perpendicular to the traveling direction of the roll paper, disposed near the upstream or downstream side of the curl correction roller to regulate the winding length of the roll paper around the curl correction roller; And a rotatable regulating roller for winding the roll paper in the curl direction.

According to the second aspect of the present invention, the curl correcting device includes a curl correcting roller configured to wind the roll paper in a direction opposite to the curl habit direction, and a winding length of the roll paper around the curl correcting roller. The curl straightening device can be configured with a simple structure at a low cost by using two rollers, a regulating roller that regulates the roll paper and a curl roller that winds the roll paper in the curl direction. Since the curl is corrected by passing through the movable roller, it is possible to smoothly pass the roll paper without any load by the rotating operation of these two rollers.

Since the curl of the roll paper is removed by being wound around the curl straightening roller, the diameter of the curl straightening roller and the length of the roll paper wound around the curl straightening roller are determined by the degree of the curl straightening. Is a factor that determines That is, the smaller the diameter of the curl correcting roller, or the longer the length of the roll paper wound around the curl correcting roller, the stronger the curl correcting effect, and conversely, the larger the diameter of the curl correcting roller, Alternatively, the curl correcting effect becomes weaker as the length of the roll paper wound around the curl correcting roller is shorter.

According to the third aspect of the present invention, there is provided a sheet feeding apparatus.
Wherein the curl correcting device has a roller position adjusting means for adjusting a winding length of the roll paper around the curl correcting roller by displacing a position of the curl correcting roller or the regulating roller. It is characterized by having. According to the third aspect of the present invention, the length of the roll paper wound around the curl correction roller, that is, the degree of curl correction, is adjusted by displacing the position of the curl correction roller or the regulating roller by the curl correction device. Since the roller position adjusting means is provided, the curl correction can be appropriately performed by setting the degree of curl correction to an appropriate level in accordance with the degree of curl of the roll paper.

More specifically, the degree of curl of the roll paper depends on the roll radius of the roll paper, the type of roll paper (paper thickness, material), and the environment (temperature, humidity) used. Therefore, by setting an appropriate degree of curl correction according to these, an appropriate curl correction effect can be obtained.

The roller position adjusting means may be configured so that the roller position is automatically displaced in combination with detecting means such as a sensor for detecting the magnitude of the roll paper winding radius, or May be configured to be displaced manually.

According to a fourth aspect of the present invention, there is provided a sheet feeding apparatus according to the third aspect.
In the above, the roller position adjusting means may stepwise displace an arrangement position of the curl correction roller or the regulation roller to an arrangement position optimized according to a type of the roll paper assumed to be used. It is characterized by having such a configuration.

According to the fourth aspect of the present invention, it is possible to easily set an optimum curl correction degree according to the type of roll paper. That is, the roller position adjusting means does not enable the disposition position of the curl correcting roller or the regulating roller to be displaced to an arbitrary position, and the arrangement is optimized according to the type of roll paper to be used. It is configured to be displaced only to the position. For example, roll paper that is assumed to be used is
When there are two types of paper, a thick glossy paper with strong stiffness and plain paper with weak stiffness, the curl correcting roller or the regulating roller is positioned only at the optimal position for correcting the curl habit of these two types of roll paper. It is provided to be displaced. Here, the “arranged position optimized according to the paper type” means that the degree of curl of the roll paper differs depending on the paper type (paper thickness and material) of the roll paper. This refers to the position of the curl correcting roller or the regulating roller when the length of winding of the roll paper around the curl correcting roller is adjusted so as to obtain an optimal curl correcting degree according to the degree of the curl habit of the seed. As described above, according to the fourth aspect of the present invention, the user can easily adjust (switch) the degree of curl correction according to the type of roll paper used.

According to a fifth aspect of the present invention, there is provided a sheet feeding device.
Or the regulating roller shaft supporting member, wherein the roller position adjusting means pivotally supports a rotating shaft of the regulating roller and is rotatably provided around a rotating shaft parallel to the rotating shaft of the regulating roller. And rotation stopper means for fixing the regulating roller shaft support member at a predetermined rotation position. According to the invention as set forth in claim 5 of the present application, the roller position adjusting means is provided so as to be rotatable around a rotation axis parallel to the rotation axis of the restriction roller, which supports the rotation axis of the restriction roller. Since the roller support member and the rotation stopper means for fixing the regulating roller support member at a predetermined rotation position are provided, the roller position adjusting means can be configured with a simple structure at low cost.

According to a sixth aspect of the present invention, there is provided a sheet feeding apparatus.
In 4 or 4, the regulating roller is provided on the upstream side of the curl correcting roller, and the curl correcting roller conveys the roll paper at a constant pitch below the inkjet recording head that performs recording on the roll paper. A transport drive roller that is driven to rotate, and a transport driven roller that nips the roll paper between the transport drive roller and a driven roller that is driven to rotate by being pressed against the transport drive roller. Is provided near an extension of a tangent line at a nip point between the transport driving roller and the transport driven roller when the traveling path of the roll paper is viewed from the side,
The roller position adjusting means displaces the disposition position of the curl correction roller so as to maintain a constant angle at which the roll paper advances from the curl correction roller to the nip point between the transport driving roller and the transport driven roller. It is characterized by the following.

According to the invention of claim 6 of the present application, the curl correction roller for correcting the curl of the roll paper does not give an unreasonable curve to the roll paper toward the ink jet recording head. Similarly, when the disposition position of the curl correction roller is displaced for changing, the roll paper does not bend unnecessarily, thereby maintaining a proper curl correction effect and obtaining uniform recording quality. It becomes possible.

That is, the curl correcting roller for correcting the curl of the roll paper is provided in the vicinity of an extension of the tangent line at the nip point between the transport driving roller and the transport driven roller when the traveling path of the roll paper is viewed from the side. Therefore, after the roll paper has left the curl correction roller, it proceeds straight to the nip point with the transport driving roller or the transport driven roller, whereby the roll paper is not wound around either of the two rollers, and thus the curl correction is performed. The rolled paper is conveyed under the ink jet recording head in an appropriate state without curling the rolled paper after the curl and giving the curl again.

Next, the roller position adjusting means for adjusting the winding length of the roll paper around the curl correcting roller by adjusting the disposition position of the curl correcting roller is provided by a roller position adjusting means for moving the roll paper from the curl correcting roller to the transport driving roller. The position at which the curl correcting roller is disposed is displaced so as to maintain a constant angle of advance to the nip point between the roller and the transport driven roller. Therefore, even if the disposition position of the curl correcting roller is displaced, the roll paper is hardly wound around the transport driving roller or the transport driven roller, whereby it is possible to maintain an appropriate curl correcting effect,
Thus, it is possible to obtain a uniform recording quality.

According to a seventh aspect of the present invention, there is provided a sheet feeding apparatus according to the sixth aspect.
Wherein the roller position adjusting means comprises a slide groove for slidably rotating the rotation axis of the curl correction roller, and a slide stopper means for fixing the rotation axis of the curl correction roller at a predetermined slide position. Features. According to the invention as set forth in claim 7 of the present application, the roller position adjusting means includes a slide groove for slidably rotating the rotation axis of the curl correction roller, and a slide stopper for fixing the rotation axis of the curl correction roller at a predetermined slide position. Therefore, the roller position adjusting means can be configured with a simple structure at low cost.

The paper feeder according to claim 8 of the present application is claim 2.
In any one of Items 1 to 7, the curl correcting roller and / or the regulating roller are provided detachably. According to the invention described in claim 8 of the present application,
Since the curl correcting roller and / or the regulating roller are provided detachably, the degree of curl correction can be easily adjusted by appropriately using rollers having different radii (curvatures). That is, a stronger curl correcting effect can be obtained by using a curl correcting roller having a smaller diameter, and a gentle curl correcting effect can be obtained by using a curl correcting roller having a larger diameter. In addition, a stronger curl correcting effect can be obtained by using a regulating roller having a large diameter, and a gentle curl correcting effect can be obtained by using a regulating roller having a small diameter.

According to a ninth aspect of the present invention, there is provided a sheet feeding apparatus according to the third aspect.
In any one of the above items 1 to 8, the supply path of the roll paper between the curl correcting roller and the regulating roller may be exposed by displacement of the arrangement position of the curling roller and / or the regulating roller. It is characterized in that the roll paper can be set in the feed path of the roll paper by inserting the leading end of the roll paper from the exposed portion.

According to the ninth aspect of the present invention, the roll paper feeding path between the regulating roller and the curl correcting roller is exposed due to the displacement of the arrangement position of the curl correcting roller and / or the regulating roller, Since the roll paper can be set on the feeding path by inserting the leading end of the roll paper from the exposed part, the roll paper can be easily set on the feeding path from the exposed part.

According to a tenth aspect of the present invention, there is provided a recording apparatus including a recording unit for performing recording on a cut sheet and a roll sheet, and a sheet feeding device according to any one of the first to ninth aspects. Features. According to the tenth aspect of the present invention, the recording apparatus includes the sheet feeding device according to any one of the first to ninth aspects.
It is possible to obtain the same operation and effect as the invention described in any one of the above.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the general structure of an ink jet printer (hereinafter, referred to as "printer") 200 as a "recording apparatus" according to the present invention will be described with reference to FIGS. Here, FIG.
FIG. 2 is a schematic side sectional view of the printer 200.

As shown in FIG. 1, the printer 200 includes a paper feeder 100 according to the present invention at the rear of the printer main body 5, and extends by pulling out the printer main body 5 toward the front side in multiple stages. A paper output stacker 6 is provided. The sheet feeding device 100 can set both a plurality of cut sheets P _T (not shown in FIG. 1) cut into a predetermined size and a roll paper roll R wound in a roll shape. The _PT and the roll paper P _R (not shown in FIG. 1) fed from the roll paper roll R are fed from the paper feeding device 100 to the inside of the printer main body 5 and are sent to the inkjet recording head 22 (shown in FIG. 1). And is discharged to the discharge stacker 6.

In FIG. 1, reference numeral 1 denotes a roll paper holder for rotatably supporting the roll paper roll R. Further, reference numeral 2 and code 3 is shows an edge guide for guiding the side end of the cut paper P _T, reference numeral 4, a hopper (described later) as a "sheet supporting member" for supporting the back of the single-cut sheet Is shown. The edge guide 3 is slidably mounted on the hopper 4 in accordance with the width of the cut sheet.

Next, the configuration of the sheet feeding device 100 will be described in detail with reference to FIG. As described above, the paper feeding device 100 includes the roll paper holder 1 that rotatably supports the roll paper roll R behind the apparatus (to the right in FIG. 2). The roll paper holder 1 includes a support shaft (not shown) through which the shaft of the roll paper roll R is inserted, a support member 8 that supports the support shaft at both ends, and the support shaft attached to both ends of the support shaft. Rotation knob 7 for manually rotating the support shaft when necessary
and b, a cover member 7a for covering both side edges of the roll paper roll R, and the roll paper roll R is rotated by the paper feed force of the feeding drive roller 20 to be described later, as the roll paper P _R is fed out Has become. The support member 8 is formed with a hook 8a. The hook 8a is hooked on a hook 26b formed on an upper portion of a second frame 26 of the curl correction device 50 described later. The roll paper holder 1 is thereby stopped by the curl straightening device 50 (the paper feeding device 10).
0).

Further, the paper feeding apparatus 100 comprises a base of the apparatus.
A plurality of cut sheets P on the main frame 9 to be formed_TThe inclined figure
A hopper 4 for supporting the power is provided. Hopper 4 is a plate
And in an inclined posture as shown in FIG.
Is provided so as to be rotatable around the center. In addition, the hopper 4
A hopper spring 11 is provided on the lower rear surface, and the hopper
4 at the feed roller 15 which is substantially D-shaped when viewed from the side.
Energize towards. Further, the hopper 4 is a cam (not shown).
The feed mechanism is driven by the biasing force of the hopper spring 11 by the mechanism.
Against the pressure of the hopper spring 11 and the urging force of the hopper spring 11.
The lower part is separated from the paper feed roller 15
Can be switched to the cut sheet P _TWhen feeding paper
Cut paper P deposited on the hopper 4 in the pressed state.
_TIs pressed against the paper feed roller 15 and
From the cut sheet P_TAre fed out one by one
You.

Reference numeral 12 denotes a rotating shaft 1 below the hopper 4.
Reference numeral 13 denotes a pad spring that is provided to be rotatable around the center 2a, reference numeral 13 denotes a pad spring that urges the separation pad holder 12, and reference numeral 14 denotes a portion of the separation pad holder 12 that faces the sheet feeding roller 15. shows separation pad provided (friction member), at the time of feeding operation of the cut paper P _T, nipping the single-cut sheet P _T the uppermost and the separating pad 14 and the sheet feeding roller 15 is fed This prevents double feed of the next and subsequent sheets when the top cut sheet _PT is fed out.

Next, on the downstream side of the paper feed roller 15, a paper detector for detecting the passage of the cut paper P _T or rolled paper P _{R (hereinafter} referred to appropriately collectively referred to "paper P") ( A sensor unit 16 (not shown) is provided. Sensor section 16
Has a substantially U-shape when viewed from the side, is provided rotatably about a rotation shaft 16a, and rotates clockwise as shown in FIG. When the edge passes, it rotates counterclockwise, thereby detecting the passage of the sheet P and the detection of the sheet size.

Note that a front paper guide 19 is provided below the sensor unit 16, and is provided from the hopper 4 to the paper feed roller 15.
The leading end of the cut-sheet paper _PT fed out at an acute angle into the front paper guide member 19, whereby the cut-sheet paper P
_T is guided downstream. Also, the rear of the front paper guide 19 (right side in FIG. 2) have been connected the rear paper guide 18, rear section sheet guide 18, the roll paper P _R plugged from decurler 50 to be described later tip In addition to functioning as a guide member for guiding the paper to the downstream side, a thick print medium (not shown) is inserted horizontally from the rear of the paper feeder 100 (in the direction indicated by arrow B in FIG. 2). To guide. Therefore, the paper feeder 100 has three paper paths,
That is, a cut sheet _PT set in an inclined posture and a roll sheet P fed from a roll sheet roll R supported at the rear.
_It has three paper paths for feeding _R and a thick print medium that is inserted horizontally from the lower rear of the paper feeding device 100, and can handle a wide variety of print media.

Further, as is apparent from FIG.
0 indicates that a plurality of cut sheets _PT and a roll paper roll R can be set at the same time. Even when the print medium to be used is switched, compared to a configuration in which only one of the print media can be set. Thus, the switching operation is easy and the convenience of the user is improved.

Next, a recording section and a paper discharge section of the printer 200 are provided downstream of the sensor section 16. The recording unit includes a transport drive roller 20 that transports the paper P at a constant pitch, a transport driven roller 21 that presses against the transport drive roller 20, an inkjet print head 22 that ejects ink droplets, and a gap between the inkjet print head 22 and the paper P. , And a paper discharge unit is provided with a sheet P on which recording is performed by the inkjet recording head 22.
Is driven by a discharge drive roller 25 that is driven to rotate, a paper discharge driven roller 24 that is freely rotatable and presses against the paper discharge drive roller 25, and the above-described discharge stacker 6 (see FIG. 1). It is configured. The general configuration of the printer 200 has been described above.

Next, with reference to FIGS. 2 and 3 to describe the configuration of the curl straightening device 50 for correcting the curl of the following roll paper P _R. Here, FIG. 3 is a perspective view of the curl removing device 50 (a perspective view of the printer 200 as viewed obliquely from behind). As described above, the roll paper roll R is the cut sheet P
Since supported on the rear side of the hopper 4 for supporting the _T, the roll paper P _R fed out through the bottom of the hopper 4 from the rear side of the hopper 4, a cut sheet in the lower part of the paper feed roller 15 shown in FIG. 2 Merges with the inclined feed path of the paper _PT ,
Then, it is directed to the transport drive roller 20.

Here, the curl correcting device 50 is provided in a space on the back side of the hopper 4 provided in an inclined posture.
More specifically, the curl correction device 50 is roughly composed of a curl correction roller 28 described below and a regulating roller 27,
These are provided in a space serving as a dead space formed on the back side of the hopper 4 provided in an inclined posture.
In other words, the curl straightening device 50, a feed path which is inclined to feed the cut paper P _T, the thick to be inserted from the rear lower portion of the sheet feeding apparatus 100 in the horizontal direction as indicated by arrow B in FIG. 2 It is provided in a dead space formed in an area on the acute angle side of a triangle formed by a substantially horizontal supply path of the print medium. Therefore, this allows the paper feeder 100
The curl correction device 50 is provided without increasing the size of the (printer 200).

Next, the configuration of the curl correction device 50 will be described in detail. In the curl straightening device 50, the roll paper _{P R}
The correcting curl of the roll paper P _R by winding, the curl straightening roller 28 as a main component of the curl straightening device 50, the axis in the first frame 17 to which the rotation shaft 28a is the substrate of the device It is disposed in the device by being supported. Since the roll paper P _R paid out from the roll paper roll R has arisen curl, therefore, the curl straightening roller 28, wound roll paper P _R in the opposite direction to the curl habit, thereby, curl of the roll paper P _R is corrected.

[0039] In the present embodiment, the curl straightening rollers 28, the roll paper _{P R} to the rotational shaft 28a as shown in FIG. 3
Of it across the width direction are a plurality disposed at a predetermined distance, as it is densely arranged across all the width direction of the roll paper P _R, or the width direction of the roll paper P _R It may be one roller that is long. The rotating shaft 28a is supported by the first frame 17 so as to be able to displace its disposition position, which will be described later.

The upstream side of the curl correction roller 28 is
A roller 27 is provided. The regulating roller 27 corrects curl
It is provided upstream of the roller 28 and, as shown in FIG.
Roll paper P by the straightening roller 28_RDetour path
Form. Therefore, the regulating roller 27 is provided with the roll paper P_Rof
Role for regulating the length of winding on the curl correction roller 28,
In addition, played a role in determining the degree (strength) of curl correction
You. The regulating roller 27 is the same as the curl correcting roller 28.
As shown in FIG. 3, the roll paper P _RWidth
Multiple units are arranged at predetermined intervals in the direction
But roll paper P_RDensely arranged in the entire width direction
Or roll paper P_ROne row that is long in the width direction
It may be la.

The rotation shaft 27 a of the regulating roller 27 is supported by the second frame 26. The second frame 26 is attached to the first frame 17 via a rotation shaft 26a, and can rotate clockwise / counterclockwise as shown in FIG. 2 around the rotation shaft 26a. I have. Hereinafter, the attachment structure of the second frame 26 to the first frame 17 will be described in detail with reference to FIGS. here,
4 to 6 are side views (enlarged views) of the curl correction device 50. FIG.

In FIG. 4, a lock lever 30 is attached to the second frame 26 so as to be rotatable clockwise and counterclockwise in FIG. 4 about a rotation shaft 30a. The lock lever 30 has a recess 30b formed therein.
However, the second frame 26 is fixed to the first frame 17 by locking the recess 30b to the lock pin 32 provided on the lock pin 32 provided on the first frame 17. It has become. FIG. 4 shows the fixed state (the state in which the second frame 26 is locked to the first frame 17). In this state, the lock lever 30 is moved to the concave portion 3 by urging means (not shown).
Ob is urged to rotate in a direction (counterclockwise in FIG. 4) in which it is engaged with the lock pin 32.

In order to rotate the second frame 26 clockwise in FIG. 4 from the state of FIG. 4 (to release the locked state of the second frame 26), the lock lever 30 is biased as shown in FIG. Pivoted clockwise against the
And the lock pin 32 is released from the engagement state. Recess 30b
When the engagement state between the lock paper 32 and the lock pin 32 is released, the weight of the roll paper holder 1 and the roll paper roll R causes the second frame 26 to rotate clockwise (the state of FIG. 6). Then, as shown in FIG. 6, the paper path of the roll paper P _R between the curl correcting roller 28 and the regulating roller 27 is opened, exposed portion 31 is formed. FIG. 3 shows a state in which the second frame 26 is rotated to form the exposed portion 31. Therefore, by inserting the tip of the roll paper P _R from the exposed portion 31 in the state, it is possible to easily set the roll paper P _R to the paper path of the roll paper P _R.

[0044] Incidentally, setting the roll paper P _R to the paper path of the roll paper P _R, the paper detector as described above to detect the passage of the tip portion of the roll paper P _R, the control unit of the printer 200 (not shown) is automatically transport driving roller 20 (see FIG. 2) is driven rotated, turned as a predetermined amount feed after nipping the roll paper P _R.

Next, a roller position adjusting means for displacing the position of the curl removing roller 28 will be described with reference to FIGS. Here, FIG. 7 is a side view (enlarged view) of the curl removing device 50, and FIG.
It is a schematic view of a paper path of the roll paper P _R leading to the transport driving roller 20.

In FIG. 7, a slide groove 34 is formed in the first frame 17 so that both shaft ends of the rotation shaft 28a of the curl removing roller 28 can slide in the left-right direction of FIG.
A U-shaped groove 33 as “slide stopper means” into which both shaft ends of the rotating shaft 28 a are indented along the slide groove 34.
a, 33b and 33c are formed. Accordingly, both shaft ends of the rotating shaft 28a are recessed into any of the U-shaped grooves 33a, 33b, 33c, and the fixing member 35 is moved into the recessed U.
The two ends of the rotating shaft 28a are fixed to the U-shaped groove so as not to come off. Thus, the curl removing roller 28
Can be displaced to three positions, a position shown in FIG. 7, a position shown by reference numeral 28 ', and a position shown by reference numeral 28 ".

[0047] Here, the three positions decurling roller 28 is displaced, the type of the roll paper to be used as a roll paper P _R, in the present embodiment, glossy paper A,
The positions are optimized corresponding to the three types B and C (not shown). More specifically, the paper type (paper thickness, paper quality) of the roll paper to be used in the printer 200 is determined in advance, and in this embodiment, the glossy papers A, B, and C are used.
The three types are the same, and the paper quality is the same, and the paper thickness has a relationship of A>B> C. Accordingly, the curl habits are also in the order of A>B> C in the same order. Roller position adjusting means for adjusting the intensity of the order of curl correction by displacing the arrangement position of the decurling roller 28, the curl correction by increasing the winding length of the roll P _R to decurling roller 28 Therefore, the position where both shaft ends of the rotating shaft 28a enter the U-shaped groove 33a is the position of the glossy paper A, and the position where the both ends of the rotating shaft 28a are inserted into the U-shaped groove 33b is the position of the glossy paper B.
The position in which the U-shaped groove 33c is recessed is the optimum position for curling the glossy paper C.

Further, the arrangement position of the curl correction roller 28,
That is, the formation positions of the U-shaped grooves 33a to 33c are also determined by the relationship between the transport driving roller 20 and the transport driven roller 21 shown in FIG. In FIG. 7, the curl correcting roller 28 includes a transport driving roller 20 and a transport driven roller 2.
It provided one upstream and the other roller is not provided between these rollers, as illustrated, from the roll paper P _R is the curl correcting roller 28 to draw a straight paper path for the transport driving roller 20 It is going to head.

Here, the curl correcting roller 28 is provided near an extension of a tangent line at the nip point between the transport driving roller 20 and the transport driven roller 21. This allows
Roll paper P _R away the curl straightening roller 28 proceeds straight to the nip point between the transport driving roller 20 and the transport driven roller 21, thus without being wound than necessary transport driving roller 20 or the transport driven roller 21, thus again curl the roll paper P _R is prevent a problem that is imparted by the transport driving roller 20 or the transport driven roller 21.

The ink jet recording head 22 (FIG. 2)
See) and to maintain a distance between the roll paper P _R uniformly, may be as pressing slightly the roll paper P _R to the platen 23 located downstream of the transport driving roller 20 (see FIG. 2), the In such a case, the rotation center of the conveyance driven roller 21 is slightly downstream of the rotation center of the conveyance driving roller 20 (see FIG. 2).
To the left of), but in these cases,
Although very slight, the transport drive roller 20 and the roll paper P
A contact length with _R may occur.

[0051] Returning to FIGS. 7 and 8, in order to adjust the degree of curl correction depending on the paper type of the roll paper P _R, it is displaced the arrangement position of the curl straightening roller 28, as shown in FIG. 8 The U-shaped grooves 33a to 33c shown in FIG. 7 are formed so as to keep the traveling angle of the roll paper PR from the curl correction roller 28 to the transport driving roller 20 constant without changing the angle. Thus Accordingly, there is no roll paper P _R is wound around the arrangement position transport driving roller 20 or the transport be displaced the driven roller 21 of the curl straightening roller 28,
Than Te again curl the roll paper P _R This also is prevented problems that are granted.

Note that the roller position adjusting means for displacing the position of the curl correction roller 28 shown in FIG. 7 is merely an example, and any structure capable of displacing the position of the curl correction roller 28 can be used. May be anything. Also,
The arrangement position of the curl straightening roller 28 as in this embodiment rather than stepwise like to adjust configurations depending on the paper type of the roll paper P _R, fixably continuously displaceably and any position You may comprise.

Further, the degree of curl correction can be adjusted by changing the position of the regulating roller 27. FIG. 9 is a side view of the curl removing device 50 '(second embodiment of the curl correcting device) including the roller position adjusting means for displacing the arrangement position of the regulating roller 27. In FIG. 9, an arc-shaped guide groove 81 is formed in a first frame 86, and an arc-shaped guide groove 81 is formed in a second frame 80.
A fixing screw 82 that displaces inside the guide groove 81 according to the rotation of the second frame 80 is attached.

Accordingly, by loosening the fixing screw 82, the second frame 80 can be turned around the turning shaft 80a, and by tightening the fixing screw 82, the second frame 8 can be turned.
0 can be fixed to an arbitrary position, for example, a position indicated by reference numeral 80 ′, or a position indicated by reference numeral 80 ″. Such rotation of the second frame 80 restricts the rotation. roller 27 becomes displaceable to the position indicated by the position or reference numeral 27 'shown at 27', thus being adjusted winding length of the roll P _R to the curl straightening roller 28, the curl straightening degree of the roll paper P _R Can be adjusted.

Also, without rotating the second frame 80, a slide groove and a plurality of U-shaped grooves as shown in FIG. 7 are formed in the second frame 80, and the rotation shaft 27a of the regulating roller 27 is moved. The arrangement position of the regulating roller 27 can also be displaced by adopting the configuration of sliding. In this case, it goes without saying that there may be various other configurations in which the arrangement position of the regulating roller 27 is displaced. Furthermore, the winding length of the roll paper P _R to the curl straightening roller 28 or regulating attaching the rotation shaft 27a of the roller 27 detachably to the second frame 80, the curl straightening roller 28 also by exchanging different roller diameters That is, the degree of curl correction can be adjusted.

[0056]

As described above, according to the present invention, the curl correcting device is provided in the space formed on the back side of the sheet supporting member composed of the plate-like member for supporting the cut sheet in an inclined posture. A curl correcting device for correcting the curl of the roll paper without increasing the size of the paper device or the recording device can be provided.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an ink jet printer according to the present invention.

FIG. 2 is a schematic side sectional view of an ink jet printer according to the present invention.

FIG. 3 is a perspective view of the curl correcting device according to the present invention.

FIG. 4 is a side view of the curl correcting device according to the present invention.

FIG. 5 is a side view of the curl correcting device according to the present invention.

FIG. 6 is a side view of the curl correcting device according to the present invention.

FIG. 7 is a side view (enlarged view) of the curl correcting device according to the present invention.

FIG. 8 is a paper path diagram of roll paper from a regulating roller to a transport driving roller.

FIG. 9 is a side view of a curl correction device according to a second embodiment of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 roll paper holder 4 hopper 15 paper feed roller 17 first frame 18 rear paper guide 19 front paper guide 20 transport drive roller 21 transport driven roller 22 inkjet recording head 26 second frame 27 regulating roller 28 curl correction roller 30 lock lever 31 exposed portion 32 lock pin 33a to 33c U-shaped grooves 34 slide groove 35 fixing member 50 curl straightening device 100 the sheet feeding apparatus 200 ink jet printer R roll paper roll P _R roll paper P _T cut paper

Continued on the front page F-term (reference) 2C058 AB02 AC07 AD01 AE02 AE04 AE09 AF04 AF15 AF23 AF63 GA08 GB07 GB19 GB23 GB48 GB53 GE03 GE09 GE10 GE24 HA02 2C060 BA02 BC03 BC04 BC12 BC14 BC22 3F104 AA01 BA02 FA01 3F343 FA01 FB02 GC01 GA01 HA16 HB03 HB08 HC05 KB03 KB06 LA04

Claims (10)

[Claims] A sheet supporting member provided in an inclined position and supporting a cut sheet in an inclined position; and said cut sheet moving from obliquely upward to obliquely downward along an inclined surface of said sheet supporting member. A roll path provided on the back side of the paper support member and rotatably supporting the roll paper; and supplying the cut sheet paper from below the back side of the paper support member. A feed path for roll paper that joins a feed path, and a paper feeder that can set both the cut sheet and the roll paper, wherein the roll is placed on the feed path of the roll paper. A curl correcting device that corrects the curl by curling the roll paper in a direction opposite to the curl direction of the paper, wherein the curl correcting device includes a sheet support formed of a plate-like body provided in the inclined posture. Use the space formed on the back side of the member. A sheet feeding device, which is provided for use. 2. The curl correction device according to claim 1, wherein the curl correction device has a rotation axis orthogonal to a traveling direction of the roll paper,
A rotatable curl correction roller that winds the roll paper in a direction opposite to the curl habit direction, and a rotation axis that is orthogonal to a traveling direction of the roll paper, and an upstream side of the curl correction roller or A rotatable regulating roller that is disposed near the downstream side and regulates the length of the roll paper wound around the curl correction roller, and that rotates the roll paper in the curl habit direction. Characteristic paper feeder. 3. The curl correcting device according to claim 2, wherein the curl correcting device adjusts a winding length of the roll paper around the curl correcting roller by displacing an arrangement position of the curl correcting roller or the regulating roller. A sheet feeder, comprising: 4. The roll position adjusting device according to claim 3, wherein the roller position adjusting unit optimizes the arrangement position of the curl correction roller or the regulation roller in accordance with the type of the roll paper assumed to be used. A sheet feeding device configured to be displaced stepwise to an installation position. 5. The roller position adjusting means according to claim 3, wherein the roller position adjusting means axially supports a rotation shaft of the regulating roller.
A regulating roller shaft support member rotatably provided around a rotation axis parallel to the rotation axis of the regulation roller; rotation stopper means for fixing the regulation roller shaft support member at a predetermined rotation position; A sheet feeding device characterized by comprising: 6. The ink jet recording head according to claim 3, wherein the regulating roller is provided on an upstream side of the curl correcting roller, wherein the curl correcting roller performs recording on roll paper, and A transport drive roller that is driven to rotate, which transports the roll paper at a constant pitch, and nips the roll paper between the transport drive roller,
A tangential line at a nip point between the transport driving roller and the transport driven roller in a recording apparatus having a transport driven roller that is pressed against the transport driving roller and is driven to rotate. The roller position adjusting means is provided near the extension of the curl correction roller so as to maintain a constant angle at which the roll paper advances from the curl correction roller to the nip point between the transport driving roller and the transport driven roller. A sheet feeding device, wherein a disposition position of a roller is displaced. 7. The curl correction device according to claim 6, wherein the roller position adjusting means fixes a rotation shaft of the curl correction roller to a slide groove and a rotation shaft of the curl correction roller at a predetermined slide position. And a slide stopper means. 8. The sheet feeding device according to claim 2, wherein the curl correcting roller and / or the regulating roller are detachably provided. 9. The roll paper between the curl correcting roller and the regulating roller according to claim 3, wherein a position of the curl correcting roller and / or the regulating roller is displaced. The feeding path is configured to be exposed, and the roll paper can be set in the feeding path of the roll paper by inserting the leading end of the roll paper from the exposed portion. Paper equipment. 10. A recording apparatus comprising: a recording section for recording on cut sheets and roll paper; and the sheet feeding device according to claim 1. Description: