JP2010253754A - Recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To more easily carry out a paper removing work at the time of paper jamming in a recorder which adopts a constitution wherein a bending inverting route for bending-inverting recording paper, having been delivered from a paper cassette, also serves as a bending-inverting route for inverting the recording paper on which recording has been made. <P>SOLUTION: A bending-inverting unit 3 includes an inverting roller 22 which is a member of the bending-inverting route 21, a retard roller 23, an intermediate roller 24, and guide members 25, 26. Since the bending-inverting unit 3 is unitized with the above members, also including the peripheral members of the members and can be removed from the body of an inkjet printer, the paper blocked can be removed easily when the paper jamming occurs. Since a paper conveying route connected to the bending-inverting route 21 is exposed to the inside of an opening 1b, the blocked paper can be easily removed even when the paper jamming occurs in the deep position of apparatus. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a recording apparatus typified by a facsimile or a printer, and more particularly to a recording apparatus capable of recording on both sides by inverting a recording medium.

  Some recording apparatuses typified by facsimiles and ink jet printers can perform recording on both sides of a recording sheet as an example of a recording medium. Such a recording measure has a reversing path for reversing the recording paper as disclosed in Patent Document 1, for example, and the recording paper on which the recording is performed on the first surface (front surface) The sheet is fed into the reversing path, and is conveyed again to the area facing the recording head with the second surface (back surface) facing up.

  In addition, when a reversing path for reversing the recording paper is provided in this way, it is difficult to remove the recording paper when a paper jam occurs in the reversing path. Therefore, as shown in Patent Document 1 and Patent Document 2, a cover member that exposes a part of the paper transport path is provided, and a part of the paper transport path is exposed by opening the cover member as necessary. In some cases, the jammed recording sheet can be removed.

JP 2002-59599 A JP 2007-203707 A JP-A-63-286860

  In the prior art described above, even if the cover member is opened, it is difficult to take out the paper by inserting a hand into the paper conveyance path because the paper conveyance path is narrow. In addition, when a configuration that combines a curve reversal path for curving and reversing the recording paper sent from the paper cassette and a curve reversal path for reversing the recording paper on which recording has been performed is employed, the path is complicated. Therefore, there is a possibility that a paper jam occurs in the deep part of the curved reversal path. In such a case, it is more difficult to access the deeply jammed paper only by opening the cover member as in the prior art described above.

  Accordingly, the present invention has been made in view of such a situation, and an object of the present invention is to provide a recording apparatus having a reversing path for reversing the recording paper, in particular, a curved reversing path for reversing the recording paper fed from the paper cassette. In a recording apparatus that employs a configuration that also serves as a curved reversal path for reversing a recording sheet on which recording has been performed, the paper removal operation when a paper jam occurs is more easily performed.

  In order to solve the above-described problem, a recording apparatus according to a first aspect of the present invention is a recording apparatus that performs recording on a recording medium, a recording medium storage unit that stores the recording medium, and the recording target A conveyance path through which a recording medium sent out from the medium storage unit passes or a recording medium recorded by a recording unit that performs recording on the recording medium passes through again. A curve reversing path that guides to the recording unit side, and the constituent members of the curve reversing path are unitized and provided detachably with respect to the recording apparatus. It is characterized by having a configuration in which the conveyance path of the recording medium connected to the curved reversal path is exposed by being removed.

  According to this aspect, the path for reversing the recording medium sent out from the recording medium housing unit and the path for reversing the recording medium on which recording has been performed are combined into one curved reversing path. Therefore, it can contribute to the downsizing and cost reduction of the apparatus.

  In such a dual-use configuration, the curve reversal path itself is unitized and configured to be detachable from the recording apparatus, so that jam processing can be performed more easily. In particular, by removing the unit, the recording medium conveyance path connected to the curved reversal path is exposed, so even if a jam occurs at a deep position in the device, such a position is exposed and jam processing is performed. Can be easily performed.

  According to a second aspect of the present invention, in the first aspect, the unit includes a cover that can be opened and closed, and the curved reversal path is exposed by opening the cover.

  According to this aspect, the unit includes the cover that can be opened and closed, and the curved inversion path is exposed by opening the cover, so that the recording medium remaining in the curved inversion path can be easily removed.

  According to a third aspect of the present invention, in the second aspect, the cover is provided at a position where the cover enters the recording apparatus when the unit is attached to the recording apparatus. According to this aspect, since the cover is provided at a position where the unit enters the recording apparatus when the unit is attached to the recording apparatus, recording is executed without inadvertently accessing the curved inversion path. It is possible to prevent the occurrence of abnormal transport.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the curved reversing path is formed by an outer peripheral surface of a reversing roller inside, and a recording medium is wound around the reversing roller. The curved reversing path is provided with a nip roller that nips the recording medium between the reversing roller and maintains the pressure contact state between the reversing roller and the nip roller. The unit is configured to be removable.

  According to this aspect, since the unit is configured to be removable while maintaining the pressure contact state between the reversing roller and the nip roller, recording is performed by the reversing roller and the nip roller when the unit is removed. The medium (the recording medium that has become jammed) can be pulled out in a gripped state, and jamming can be easily performed.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, a transport unit that transports a recording medium is provided between the curved inversion path and the recording unit. At least one of the transport paths of the recording medium provided detachably with respect to the opening provided in the rear part of the recording apparatus and connected to the curved reversing path connects the transport means and the curved reversing path. In addition, it is exposed to the inside of the opening by removing the unit.

  According to this aspect, since the transport path that connects the transport means and the curve reversal path is exposed to the inside of the opening when the unit is removed, the recorded recording that stays when a jam occurs in the transport path. The medium can be easily removed.

  According to a sixth aspect of the present invention, in the fifth aspect, the transport path connecting the transport means and the curve reversal path is a substantially straight path, and the entire area is exposed by removing the unit. It has the structure.

  According to this aspect, the transport path is a substantially linear path, and the entire area is exposed by removing the unit. Therefore, even if a jam occurs at a deep position in the transport path, It can be easily removed.

FIG. 3 is a side sectional view showing a paper conveyance path of the printer according to the invention. FIG. 3 is a side sectional view showing a paper conveyance path of the printer according to the invention. FIG. 3 is an external perspective view of the printer according to the present invention as viewed from the upper rear side, and shows a state in which a curve reversing unit is mounted. FIG. 3 is an external perspective view of the printer according to the present invention as viewed from the upper rear side, with the curve reversal unit removed. FIG. 4 is a side cross-sectional view illustrating a paper conveyance path of the printer according to the present invention, with the curve reversal unit removed. It is an external appearance perspective view of a curve inversion unit, Comprising: The figure of the state which open | released the upper cover. FIG. 3 is an external perspective view of the printer according to the present invention as viewed from the lower rear side, with the curve reversal unit removed.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. Here, FIGS. 1 and 2 are side cross-sectional views showing a paper transport path of an ink jet printer 1 as an example of a recording apparatus according to the present invention, and FIG. 3 is an external perspective view of the ink jet printer 1 as viewed from the rear upper part. FIG. 4 is an external perspective view of the inkjet printer 1 as viewed from the upper rear side, and shows a state in which the curve reversing unit 3 is removed.

  5 is a side cross-sectional view showing the paper conveyance path of the ink jet printer 1 with the curved reversing unit 3 removed. FIG. 6 is an external perspective view of the curved reversing unit 3 and the upper cover 5. FIG. 7 is an external perspective view of the inkjet printer 1 as viewed from the lower rear side, and is a view of the state where the curve reversal unit 3 is removed. In the following, in FIG. 1 and FIG. 2, in the paper transport path from the intermediate roller 24 to the discharge drive roller 47, the right direction in the figure is referred to as the “downstream side” of the paper transport path, and the left direction in FIG. “Upstream side”.

  In FIG. 1, the ink jet printer 1 includes a paper feeding unit 2 at the bottom of the apparatus. The paper P is fed from the paper feeding unit 2, and is curved and reversed by the curve reversing unit 3 to be fed to the recording head 37 side. It has a configuration for sending and recording. In FIG. 1, a broken line R1 indicates the transport route (passage trajectory) of the paper P at this time.

  The ink jet printer 1 performs recording on the first surface (front surface) of the paper P, then back feeds (leftward in FIGS. 1 and 2), sends it to the curve reversing unit 3, and reverses it. The second surface (back surface) is turned up so that it can be conveyed again to the recording head 37 side. That is, both sides recording is possible, and the broken line R2 in FIG. 2 indicates the transport route (passage trajectory) of the paper P at this time.

  Reference numeral 8 denotes a scanner unit provided in the upper part of the printer mechanism unit, and the ink jet printer 1 is configured as a so-called multi-function machine that can print out a document image read by the scanner unit 8 by the lower printer mechanism unit. Has been.

  Hereinafter, the configuration of the sheet conveyance path will be described in detail. The paper feeding unit 2 includes a paper cassette 11 and a feeding roller 18. The paper cassette 11 that can be attached to and detached from the printer apparatus body is provided with an edge guide (not shown), and the edge guide regulates the side edge position and the rear edge position of the paper P stored in the paper cassette 11. It has become so.

  A separation slope 12 is provided at a position facing the leading edge of the paper P accommodated in the paper cassette 11, and the leading edge of the paper P sent out by the feeding roller 18 is fed to the downstream side while being in sliding contact with the separation slope 12. By doing so, preliminary separation is performed between the uppermost sheet P to be fed and the next and subsequent sheets P to be double-fed.

  The feed roller 18 is pivotally supported by a swing member 19 that can swing clockwise and counterclockwise in FIGS. 1 and 2 around a swing shaft 20, and a drive motor (not shown). It is provided so as to be rotationally driven by the power of The paper feeding roller 18 feeds the uppermost paper P from the paper cassette 11 by rotating in contact with the uppermost paper P stored in the paper cassette 11 when the paper is fed.

  Note that a friction pad 13 is provided at a position facing the feeding roller 18 in the sheet cassette 11, and when the feeding roller 18 is pressed against the sheet bundle from above, the lowermost sheet P contacts the friction pad 13. By pressing toward the sheet, the sheet bundle is held so that the sheet bundle is not sent out.

  The paper P sent upward from the paper cassette 11 enters the curve reversal unit 3. The curved reversing unit 3 includes a reversing roller 22, a retard roller 23, an intermediate roller 24, and guide members 25 and 26. The curved reversing unit 3 is unitized and is detachably provided to the apparatus main body of the inkjet printer 1. (Direction of arrow in FIG. 5: details will be described later).

The reversing roller 22 is a large-diameter roller that forms the inner side of the curved reversing path 21 for curving and reversing the paper P. In this embodiment, the reversing roller 22 is centered in the paper width direction (the front and back sides in FIG. 1 and FIG. 2). One is arrange | positioned at the feed reference position of the inkjet printer 1 which concerns on embodiment (refer FIG. 6). The outside of the curve reversal path 21 is formed by a guide member 26, a guide member not shown in FIGS. 1 and 2, and the like. Further, the inside of the curved reversing path 21 is formed by the guide member 28 in addition to the reversing roller 22 (FIG. 6).
The reversing roller 22 is provided so as to be rotationally driven by the power of a driving motor (not shown), and conveys the paper P to the downstream side while being wound by rotating in the clockwise direction of FIGS.

  The retard roller 23 is provided so as to be capable of being pressed against the reversing roller 22 in a state where a predetermined rotational frictional resistance is applied. The upper sheet P is separated from the next and subsequent sheets P which are to be double fed along with the upper sheet P.

  Note that a paper return lever (not shown) is provided in the paper feeding path in the vicinity of this, and the next and subsequent papers P whose progress has been stopped by the retard roller 23 are transferred to the paper cassette 11 by the paper return lever. It is configured to be returned.

  The intermediate roller 24 is a freely rotatable roller, and assists the paper feeding by the reversing roller 22 by nipping the paper P with the reversing roller 22. The guide member 25 is located between the reversing roller 22 and the conveyance driving roller 40, and is a position where the paper P that has been recorded on the first surface joins the curved reversing path 21 when the paper P is back-fed. A guide path 27 (indicated by reference symbol A) and an upper path through which both the sheet P fed from the sheet feeding unit 2 and the sheet P reversed through the guide path 27 pass are formed.

  As described above, the curved inversion path 21 has both a function of inverting the paper P sent out from the paper feeding unit 2 and a function of inverting the paper P recorded on the first surface. It is not necessary to provide a dedicated reversing path for reversing the paper P on which recording has been performed on the first surface, and size reduction and cost reduction are achieved.

  Next, on the downstream side of the intermediate roller 24, a conveyance unit configured to include a conveyance driving roller 40 and a conveyance driven roller 41 is provided. In the present embodiment, the conveyance drive roller 40 is formed by attaching wear-resistant particles to the surface of a metal shaft that is long in the paper width direction, and is driven to rotate by a drive motor (not shown). In the present embodiment, the transport driven roller 41 is formed of a resin material, and a plurality of the transport driven rollers 41 are arranged along the longitudinal direction of the transport driving roller 40 with appropriate intervals.

  The transport driven roller 41 is pivotally supported by a paper guide member 30 serving as a roller support so as to be freely rotatable, and is provided so as to be in pressure contact with the transport driving roller 40. Nip.

  The paper guide member 30 that supports the transport driven roller 41 is swingably supported by the frame 33 via the swing shaft 30 a and also exerts a biasing force between the frame 33 and the paper guide member 30. 31, the conveyance driven roller 41 is provided in a state of being urged in a direction in which the conveyance driven roller 41 is pressed against the conveyance driving roller 40. In the present embodiment, a plurality (three in this embodiment) of the paper guide members 30 are arranged along the axial direction of the transport driving roller 41.

  The paper guide member 30 supports the transport driven roller 41 and also functions to guide the paper P fed from the upstream side to the nip point between the transport drive roller 40 and the transport driven roller 41.

  Next, an ink jet recording head 37 and a paper guide member 45 are vertically opposed to each other on the downstream side of the transport driving roller 40. The ink jet recording head 37 is provided at the bottom of the carriage 36, and the carriage 36 is guided by the frames 33 and 34 disposed in the front and rear, and receives the power of a driving motor (not shown) to receive the power of the driving motor (not shown). 2 in the direction of the front and back of the paper). The carriage 36 houses a cartridge not shown.

  Ribs 45a, 45b, 45c extending in the paper transport direction are arranged on the surface of the paper guide member 45 facing the ink jet recording head 37 at predetermined intervals in this order from the upstream side to the downstream side in the paper transport direction. A plurality of ribs are provided at appropriate intervals in the main scanning direction (arrangement in the main scanning direction is not shown). The paper P is supported by these ribs, and the distance from the ink jet recording head 37 is defined.

  Next, an auxiliary roller 46 for preventing sheet lifting is provided on the downstream side of the region where the ink jet recording head 37 and the paper guide member 45 face each other, and further on the downstream side, a discharge driving roller 47 and a discharge driven roller 48. The paper discharge means comprised by these is provided. The discharge drive roller 47 is composed of a rubber roller and is rotationally driven by a drive motor (not shown). The discharge driven roller 48 is a spur provided so as to be lightly elastically contacted with the discharge drive roller 47, and nips the paper P with the discharge drive roller 47. The paper P on which recording has been performed by these rollers is discharged toward a stacker (not shown).

  The transport driving roller 40 is configured to be capable of rotating in the forward and reverse directions, that is, a first direction in which the paper P is transported to the ink jet recording head 37 side (right direction in FIGS. 1 and 2: downstream direction), and a curve. The paper P can be transported in both directions in the second direction (left direction: upstream direction in FIGS. 1 and 2) transported to the side of the curve reversing unit 3 having the reversing path. Similarly, the discharge drive roller 47 is configured to be able to rotate forward and reverse, and the paper P can be conveyed in either the first direction or the second direction.

The above is the configuration of the paper conveyance path of the ink jet printer 1, and the curved reversal unit 3 will be described in further detail below with reference to FIGS.
The bending reversal unit 3 includes the reversing roller 22, the retard roller 23, the intermediate roller 24, and the guide members 25 and 26, which are constituent members of the curved reversing path 21, and further unitized including peripheral members of these constituent members. It has been done.

As shown in FIGS. 3 and 4, the curve reversal unit 3 is detachably provided in an opening 1 b provided on the rear side of the apparatus main body 1 a of the inkjet printer 1.
A positioning pin (not shown) is provided inside the opening 1b, and the concave portion 3b provided in the main body 3a of the bending reversing unit 3 is fitted to the positioning pin, whereby the bending reversing unit 3 The mounting position is determined. The positioning pins and the recesses 3b are disposed at the tip portions of both sides of the bending reversal unit 3 (see FIG. 7).

  Further, guide means is provided inside the opening 1b, and when the bending reversing unit 3 is pushed into the opening 1b, the bending reversing unit 3 collides with a component inside the opening 1b. It is guided smoothly to the mounting position.

  As shown in FIGS. 5 and 6, the curved reversing unit 3 has an upper cover 5 that can be opened and closed at the upper part of the unit main body 3a. The upper cover 5 is formed with an elastic piece 5a and a locking projection 5b. Has been. The locking protrusion 5b fixes the bending reversal unit 3 to the apparatus main body 1a by engaging with the locking protrusion 29 inside the opening 1b when the bending reversing unit 3 is mounted on the apparatus main body 1a. Note that the engagement state between the locking projection 5b and the locking projection 29 can be released by pushing the elastic piece 5a downward.

  The upper cover 5 is formed with a knob 5c, and the upper cover 5 can be opened as shown in FIG. 6 by picking up the knob 5c and pushing it upward. When the upper cover 5 is opened, the inside of the unit, specifically, the reverse roller 22, the retard roller 23, and the intermediate roller 24 are exposed.

  The upper cover 5 is provided at a position that enters the inside of the opening 1b when the curved reversing unit 3 is mounted. In the mounted state of the curved reversing unit 3, the rotation track of the upper cover 5 is located inside the opening 1b. Since the upper cover 5 cannot be opened due to interference with the constituent members, the curved inversion path 21 is not inadvertently accessed, and the occurrence of conveyance abnormality during normal recording can be prevented.

  The curve reversal unit 3 is unitized by the constituent members of the curve reversal path 21 as described above, and the curve reversal path 21 itself can be detached from the apparatus main body of the inkjet printer 1 as shown in FIG. The jammed paper can be easily removed when a jam occurs. Note that the paper jammed inside the curve reversing unit 3 can be easily removed by opening the upper cover 5 that can be opened and closed.

  Further, in this embodiment, the curved reversing unit 3 can be removed while maintaining the pressure contact state between the reversing roller 22 and the retard roller 23 as a nip roller, so that the jammed paper is pulled out while being gripped by both rollers. This makes jam processing even easier.

  Further, when the bending reversing unit 3 is removed, the paper conveyance path connected to the curved reversing path 21 is exposed to the inside of the opening 1b, so that even if a paper jam occurs at a deep position in the apparatus, the jammed paper can be easily removed. Can be removed.

In particular, in the present embodiment, the guide path 27 (FIG. 1), which is a conveyance path connected to the curved reversing path 21, is a substantially straight path, and the entire area of the guiding path 27 is removed from the opening 1b by removing the curved reversing unit 3. Therefore, even if a jam occurs at a deep position in the guide path 27, the staying paper can be easily removed.
Although this embodiment is as above, it cannot be overemphasized that this invention is not restricted to the said embodiment, A various embodiment is employable.

DESCRIPTION OF SYMBOLS 1 Inkjet printer, 2 Paper feeding part, 3 Curve reversal unit, 3a Unit main body, 3b Recessed part, 5 Upper cover, 5a Elastic piece, 5b Locking protrusion, 5c Knob, 8 Scanner unit, 11 Paper cassette, 12 Separation slope, 13 Friction Pad, 18 Feeding Roller, 19 Oscillating Member, 20 Oscillating Shaft, 21 Curved Reversing Path, 22 Inverting Roller, 23 Retarding Roller, 24 Intermediate Roller, 25, 26 Guide Member, 27 Guide Path, 29 Locking Projection , 30 paper guide member, 31 tension spring, 33, 34 frame, 36 carriage, 37 inkjet recording head, 40 transport drive roller, 41 transport driven roller, 45 paper guide member, 45a-45b rib, 46 auxiliary roller, 47 discharge drive Roller, 48 discharge driven rollerー 、 A Convergence position of curved reversal path and guide path, P Recording paper

Claims (6)

A recording apparatus for recording on a recording medium,
A recording medium storage unit for storing the recording medium;
A transport path through which the recording medium sent out from the recording medium storage unit passes, or through which the recording medium recorded by the recording unit for recording on the recording medium passes again, A curve reversing path for reversing the curve and guiding it to the recording unit side,
The constituent members of the curved inversion path are unitized and provided so as to be detachable from the recording apparatus, and the conveyance path of the recording medium connected to the curved inversion path is exposed by removing the unit having the curved inversion path. Having a configuration to
A recording apparatus. The recording apparatus according to claim 1, wherein the unit includes a cover that can be opened and closed, and the curve reversal path is exposed by opening the cover.
A recording apparatus. The recording apparatus according to claim 2, wherein the cover is provided at a position that enters the recording apparatus when the unit is attached to the recording apparatus.
A recording apparatus. 4. The recording apparatus according to claim 1, wherein the curved reversing path has an inner side formed by an outer peripheral surface of a reversing roller, and the recording medium is wound around the reversing roller to be reversed. Having a configuration
The curved reversing path is provided with a nip roller that nips a recording medium with the reversing roller,
The unit is configured to be removable while maintaining the pressure contact state between the reversing roller and the nip roller.
A recording apparatus. 5. The recording apparatus according to claim 1, further comprising a conveying unit that conveys a recording medium between the curved inversion path and the recording unit.
The unit is provided detachably with respect to an opening provided at a rear portion of the recording apparatus,
At least one of the recording medium conveyance paths connected to the curved reversal path connects the conveyance means and the curved reversal path, and is exposed to the inside of the opening by removing the unit.
A recording apparatus. 6. The recording apparatus according to claim 5, wherein the transport path connecting the transport means and the curve reversal path is a substantially straight path, and the entire area is exposed by removing the unit. ,
A recording apparatus.

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