JP2010195498A - Recording device, and guide mechanism in recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress a shift between layers of a recording medium even if a position of a conveyance path of the recording medium in a recording device is limited. <P>SOLUTION: A printer 1 performing recording on continuous copy paper 100 by a recording head 20 includes a conveyance mechanism feeding the continuous copy paper 100 to the recording head 20 and delivering the continuous copy paper 100 after recording by the recording head 20. A platen 25 for inverting a conveyance direction of the continuous copy paper 100 after recording by the recording head 20, and a paper delivery guide 42 further turning the conveyance direction of the continuous copy paper 100 that has been inverted in the platen 25 are provided in the conveyance path conveying the continuous copy paper 100. A guide frame 50 for guiding the continuous copy paper 100 to maintain a direction turned by the paper delivery guide 42 is disposed downstream of the paper delivery guide 42 to be movable in a width direction of the continuous copy paper 100. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a recording apparatus that performs recording on a recording medium, and a guide mechanism in the recording apparatus.

  Conventionally, as a recording apparatus for recording characters or the like on a recording medium, when a recording medium in which a plurality of sheets are stacked is used, and when a recording medium consisting of a single sheet is used, conveyance downstream of the recording position is performed. An apparatus capable of preventing the interlayer displacement by switching the path to a path in which the bending angle of the recording medium is suppressed within a predetermined range when using a recording medium in which a path is manually switchable and a plurality of sheets are stacked. It is known (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 06-180379

However, depending on the structure of the recording apparatus, it may be difficult to secure a conveyance path in which the bending angle of the recording medium is suppressed as in the conventional recording apparatus. For example, there is a recording apparatus that requires a conveyance path that reverses the conveyance direction of the recording medium. In such an apparatus, it is difficult to reduce the bending angle of the recording medium as in the conventional recording apparatus, It was difficult to prevent the recording medium from shifting between layers.
The present invention has been made in view of the above-described circumstances, and is capable of suppressing interlayer displacement of a recording medium even when the position of a recording medium conveyance path in the recording apparatus is limited. Objective.

In order to solve the above problems, the present invention provides a recording apparatus for recording on a recording medium by a recording head, and feeding the recording medium to the recording head and discharging the recording medium after recording by the recording head. A reversing unit for reversing the conveyance direction of the recording medium after recording by the recording head, and a conveyance direction of the recording medium reversed by the reversing unit in a conveyance path for conveying the recording medium by the conveyance mechanism. And a guide member that guides the recording medium so as to hold the direction turned by the turning part on the downstream side of the turning part so as to be movable in the width direction of the recording medium. Provided is a recording apparatus characterized by being provided.
According to this configuration, after the conveyance direction of the recording medium is reversed by the reversing unit, the recording medium conveyance direction is further turned to cancel the bending of the recording medium, and further, the recording material turned by the guide member By maintaining the orientation of the medium, interlayer displacement can be more effectively suppressed. In addition, since the guide member is movable in the width direction of the recording medium, if the guide member is moved in accordance with the width of the recording medium, it is possible to easily cope with recording media of various sizes. Even if the member is downsized, the guide member can be easily downsized because it can be used for a wide recording medium. Therefore, even in a recording apparatus having a conveyance path that reverses the conveyance direction of the recording medium, the interlayer displacement of the recording medium can be effectively suppressed.
Here, the turning unit may turn the recording medium conveyance direction reversed by the reversing unit in a direction opposite to the reversing unit.

In the above configuration, the transport mechanism includes a tractor that feeds the recording medium from the outside of the recording apparatus to the recording head, and the tractor is disposed movably in the width direction of the recording medium, and the guide member May be attached to the tractor.
In this case, if the position of the tractor is adjusted to the width size of the recording medium by providing the guide member on the tractor, the position of the guide member is simultaneously adjusted to the width size of the recording medium without the user's intention. Adjusted to Accordingly, no special operation is required, and the position of the guide member can always be set to the optimum position, and the interlayer displacement of the recording medium can be more effectively suppressed.

In the above configuration, a plurality of fixing portions for fixing the guide member may be provided on the downstream side of the turning portion so as to be aligned in the width direction of the recording medium.
In this case, since the guide member can be fixed to the fixing portion arranged side by side on the downstream side of the turning portion, the guide member is fixed to the fixing portion at a position suitable for the width size of the recording medium, thereby turning the recording. The direction of the medium can be effectively maintained.

The present invention also provides a recording apparatus comprising: a recording head for recording on a recording medium; and a transport mechanism for feeding the recording medium to the recording head and discharging the recording medium after recording by the recording head. A reversing unit for reversing the conveyance direction of the recording medium after recording by the recording head and a turning unit for further turning the conveyance direction of the recording medium reversed by the reversing unit in a conveyance path for conveying the recording medium. And a guide member that guides the recording medium so as to hold the direction of turning at the turning portion downstream of the turning portion, and is movable in the width direction of the recording medium. A guide mechanism in the apparatus is provided.
According to this configuration, after the conveyance direction of the recording medium is reversed, the recording medium conveyance direction is further turned to cancel the bending of the recording medium, and further, the direction of the turned recording medium by the guide member By holding the interlaminar displacement can be more effectively suppressed. In addition, since the guide member is movable in the width direction of the recording medium, if the guide member is moved in accordance with the width of the recording medium, it is possible to easily cope with recording media of various sizes. Even if the member is downsized, the guide member can be easily downsized because it can be used for a wide recording medium. Therefore, even in a recording apparatus having a conveyance path that reverses the conveyance direction of the recording medium, the interlayer displacement of the recording medium can be effectively suppressed.

  According to the present invention, it is possible to effectively suppress interlayer displacement of a recording medium in a recording apparatus having a conveyance path that reverses the conveyance direction of the recording medium.

1 is a cross-sectional view of a dot impact printer according to a first embodiment. It is a perspective view of a dot impact printer. It is a principal part perspective view of a dot impact printer. It is a principal part top view which shows the structure of a tractor unit. It is a perspective view of the dot impact printer which concerns on 2nd Embodiment.

[First Embodiment]
FIG. 1 is a cross-sectional view of a dot impact printer according to a first embodiment to which the present invention is applied. 2 is a perspective view of the dot impact printer as seen from the rear, and FIG. 3 is a perspective view of the main part of the dot impact printer as seen from a direction different from FIG. In FIG. 1, the conveyance path of the continuous copying paper 100 is indicated by a virtual line.
A dot impact printer 1 (hereinafter referred to as a printer 1) as a recording apparatus uses an image (characters, images, symbols, etc.) including characters on a continuous copy paper 100 as a recording medium by a recording head 20 provided at a substantially center of a main body 10. Device). A front panel of the main body 10 is provided with an operation panel 11 on which a switch for a user to operate the printer 1 and an LED for displaying an operation state of the printer 1 are arranged.

Examples of the recording medium that can be used by the printer 1 include a cut sheet that has been cut into a predetermined size, a folded continuous sheet, and a roll sheet that has been wound into a roll. Examples of the material constituting these sheets include paper (including thermal paper) or synthetic resin sheets, and the surface of these sheets may be coated. Further, it may be a copy sheet in which a plurality of sheets are stacked, or a single sheet. In this embodiment, as an example, a case will be described in which a continuous copy paper 100 that can be copied by stacking a plurality of sheets of paper and applying pressure to the outermost sheet is used as a recording medium.
The printer 1 is connected to a host computer (not shown), receives print data transmitted from the host computer, and performs printing (recording) based on the received print data. This print data may include image data (including characters) to be printed, a control command for instructing execution of printing, a control command for specifying a printing range and a printing position, and other control information.

The recording head 20 of the printer 1 is mounted on a carriage 21 and is scanned in the width direction of the continuous copying paper 100 together with the carriage 21. The carriage 21 is inserted into a carriage guide shaft 22 extending along the width direction of the main body 10, and reciprocally scanned along the carriage guide shaft 22 by a driving force of a carriage drive motor (not shown). The scanning direction of the carriage 21 is a main scanning direction.
The recording head 20 is disposed to face a platen 25 extending in the width direction of the main body 10, that is, the main scanning direction. The recording head 20 is a dot impact type recording head that includes a plurality of recording wires (not shown) and strikes the recording wire toward the platen 25 while being scanned together with the carriage 21.
The platen 25 is a roll platen formed in a roll shape, and the platen 25 is wound around the surface of the platen 25. The surface of the platen 25 is rich in elasticity and is covered with a material having a high friction coefficient, such as synthetic rubber or silicon rubber, and receives a recording wire (not shown) hit from the recording head 20.

  An ink ribbon cartridge 23 is mounted on the front of the main body 10, and an ink ribbon (not shown) fed out from the ink ribbon cartridge 23 is disposed in front of a recording wire (not shown) of the recording head 20. Therefore, the recording head 20 is scanned together with the carriage 21, and the recording head 20 strikes the recording wire toward the platen 25, whereby the ink attached to the ink ribbon is transferred to the recording surface of the continuous copying paper 100. Recording is performed on the continuous copy paper 100.

In FIG. 1, the feeding direction in which the continuous copying paper 100 is fed from the outside of the main body 10 of the printer 1 is indicated by an arrow DI, and the discharging direction in which the continuous copying paper 100 after recording is discharged to the outside of the main body 10 is shown. , Indicated by an arrow DO.
The printer 1 feeds the continuous copy paper 100 having holes at both ends to the recording head 20 from the outside of the main body 10 and discharges the continuous copying paper 100 recorded by the recording head 20 to the outside of the main body 10. A transport mechanism is provided. The transport mechanism includes a tractor unit 30 that feeds the continuous copying paper 100 into the main body 10 at the rear portion of the main body 10, and a platen 25 whose surface is covered with a material having high elasticity and high friction coefficient. In addition, the printer 1 includes two driven rollers 26A and 26B having different diameters, which are rotatably arranged along the transport direction in parallel with the platen 25 as a mechanism for transporting the cut sheet. A release mechanism (not shown) for bringing 26A and 26B into and out of the platen 25 is provided.
A case where a cut sheet (not shown) is conveyed will be described. When the driven mechanism 26A, 26B is moved to the platen 25 side by operating the release mechanism, the two driven rollers 26A, 26B are urged toward the platen 25 by a spring (not shown), so that the driven rollers 26A, 26B are The inserted cut sheet is pressed against the platen 25. The cut sheet is conveyed as the platen 25 rotates.
In contrast, when the continuous copying paper 100 is fed, first, the driven rollers 26A and 26B are separated from the platen 25 by operating the release mechanism. Thereafter, the printer 1 conveys the continuous copy paper 100 by driving the tractor unit 30. At this time, the platen 25 rotates in synchronization with the tractor unit 30.
The continuous copy paper 100 is wound around the platen 25 as described above. Since the surface of the platen 25 is rich in elasticity and is covered with a material having a high friction coefficient, when the platen 25 is rotated, the continuous copying paper 100 is conveyed by this rotational force.

The continuous copy paper 100 conveyed to the recording position of the recording head 20 in this manner is recorded by a recording wire (not shown) of the recording head 20 and then moved upward by the driving force of the platen 25.
A cover 41 is disposed above the platen 25 to cover a discharge port through which the continuous copy paper 100 is fed out. The cover 41 forms a space above the platen 25, and a paper discharge guide 42 is formed on the back surface of the cover 41 so as to protrude into the space. The paper discharge guide 42 is a plate-like rib extending in a direction orthogonal to the main scanning direction, and a plurality of the paper discharge guides 42 are arranged in the main scanning direction. The lower end of the paper discharge guide 42 is formed in a curve from the upper side to the rear side of the platen 25, and the continuous copying paper 100 fed by the platen 25 is guided rearward along the lower end of the paper discharge guide 42. At the same time, the paper discharge guide 42 has a function of turning the conveyance direction of the continuous copy paper 100.

  That is, the conveyance direction of the continuous copying paper 100 is turned in the almost opposite direction by the platen 25 from the direction when passing between the platen 25 and the driven rollers 26A and 26B. Accordingly, the continuous copy paper 100 after recording by the recording head 20 is reversed on the platen 25 as the reversing unit, and is sent in the direction opposite to that when feeding to the recording head 20. The continuous copy paper 100 separated from the platen 25 is bent while being conveyed along the lower end of the paper discharge guide 42. This bending direction is opposite to the bending direction in the state of being wound around the platen 25. After being reversely bent by the paper discharge guide 42, the continuous copy paper 100 is supported and raised by the wall-shaped sheet guide 28 erected on the upper portion of the main body 10 while maintaining the direction after the reverse bending. Further, it is conveyed to the upper end of the guide frame 50.

  If bending is applied when the continuous copying paper 100 is conveyed, a deviation (so-called interlayer deviation) of a plurality of sheets constituting the continuous copying paper 100 occurs. In the printer 1, an interlayer shift occurs when the continuous copy paper 100 is wound around the platen 25 as described above, but by bending the paper in the opposite direction to the bending direction when the paper is wound around the platen 25 by the paper discharge guide 42, Deviations in the reverse direction are caused in the plurality of sheets constituting the continuous copying sheet 100, and a part of the interlayer deviation generated in the platen 25 is offset and reduced.

Further, the printer 1 conveys the continuous copy paper 100 turned upward by the paper discharge guide 42 to the upper end of the guide frame 50 while maintaining the orientation of the continuous copy paper 100. The continuous copying paper 100 has to be finally transported to the back of the main body 10, but if the continuous copying paper 100 is transported rearward immediately after the reverse bending by the paper discharge guide 42 is completed, the continuous copying paper 100 Therefore, the effect of reducing the interlayer displacement by reverse bending is reduced.
Specifically, the transporting direction of the continuous copying paper 100 reversely bent by the paper discharge guide 42 is transported by a certain distance while the transporting direction of the continuous copying paper 100 is not changed, and then the transporting direction of the continuous copying paper 100 is reduced. If the is turned backward, the interlayer displacement can be suppressed. More specifically, P1 is a position where the recording head 20 strikes a recording wire (not shown), P2 is a position where reverse bending by the paper discharge guide 42 is finished, and P3 is an upper end of the guide frame 50. When the transport distance from the position P2 is L1 and the transport distance from the position P2 to the position P3 is L2, as shown in the following formula (1), if L2 is 3 times or more of L1, the interlayer displacement is reduced. The effect to do is remarkable and is preferable.
L2 ≧ L1 × 3 (1)
The preferred ratio between L2 and L1 varies depending on the radius of the platen 25, the radius of curvature of reverse bending by the paper discharge guide 42, and the ratio thereof, but the longer L2 is, the better effect can be obtained. It is clear from these tests.

The guide frame 50 is erected on the tractor unit 30 located behind the seat guide 28.
The tractor unit 30 is disposed at the rear portion of the main body 10, winds up the continuous copy paper 100 riding on the paper feed guide 27 protruding rearward of the main body 10, and sends it to the platen 25. As shown in FIGS. 2 and 3, a pair of left and right tractor units 30 are arranged on the main body 10, and a paper feed support member 39 is arranged between the two tractor units 30.

As shown in FIGS. 1 and 2, the tractor body 31 of the tractor unit 30 is inserted through a tractor drive shaft 32 and a tractor guide shaft 33 that are installed in the width direction of the body 10, and the tractor drive shaft 32 and the tractor guide shaft 33 are inserted. Along the main scanning direction. The paper feed support member 39 is also inserted through the tractor drive shaft 32 and the tractor guide shaft 33 and is movable in the main scanning direction.
The tractor drive shaft 32 is provided with a drive pulley (not shown). A tractor belt 34 that fits the continuous copying paper 100 is wound around the drive pulley, and the tractor belt 34 is rotated as the tractor drive shaft 32 rotates. Rotates.

  FIG. 4 is a main part plan view showing the configuration of the tractor unit 30 in detail, and shows the tractor unit 30 located on the left side of the main body 10 as an example. As described above, the printer 1 includes a pair of left and right tractor units 30, and the tractor unit 30 located on the right side of the main body 10 has a bilaterally symmetric configuration with the tractor unit 30 shown in FIG. 4.

As shown in FIGS. 1 and 4, the tractor belt 34 is an endless belt, and a plurality of pins 34 </ b> A (FIG. 4) are arranged at predetermined intervals on the surface thereof. The continuous copying paper 100 used in the printer 1 is provided with sprocket holes 100A at predetermined intervals at both ends in the width direction. The pin 34A is fitted into the sprocket hole 100A (FIG. 4), and the continuous copying paper 100 is wound up by driving the tractor belt 34 by the driving force of the tractor driving shaft 32.
The tractor unit 30 includes a tractor cover 37 that covers the upper surface of the tractor body 31. The tractor cover 37 is a lid that covers the continuous copying paper 100 placed on the tractor belt 34, and has a slit so as not to hinder the operation of the tractor belt 34. The tractor cover 37 is attached to the side end of the tractor body 31 via a hinge 37A at the side end, and is opened and closed by rotating around the hinge 37A. The tractor cover 37 is opened when the continuous copying paper 100 is set on the tractor belt 34 or when the continuous copying paper 100 is removed.

The tractor unit 30 can move along the tractor drive shaft 32 and the tractor guide shaft 33 as described above, but in order to fit the pins 34A into the sprocket holes 100A formed at both ends of the continuous copying paper 100, The tractor unit 30 is preferably fixed at a position that matches the width of the continuous copying paper 100. In this case, the tractor unit 30 holds the continuous copy paper 100 through the sprocket holes 100A of the continuous copy paper 100, thereby acting as a width regulating member for regulating the position in the width direction of the continuous copy paper 100, and continuous copying. There is an effect of preventing the skew of the paper 100.
For this reason, the tractor body 31 of the tractor unit 30 is provided with a chuck mechanism 35 that holds the tractor guide shaft 33. The chuck mechanism 35 firmly holds the tractor guide shaft 33 and fixes the tractor body 31 to the tractor guide shaft 33. The chuck mechanism 35 can be loosened by operating the lever 36, and the tractor unit 30 can be freely moved in the main operation direction when the chuck mechanism 35 is loosened. Therefore, at the start of use of the continuous copying paper 100, the chuck mechanism 35 is loosened by operating the lever 36, the left side, that is, the 0-digit position side tractor unit 30 is aligned with the image recording position, and the right side tractor unit 30 is continuously connected. In accordance with the position along the edge of the copy paper 100, the operation of the lever 36 is performed to tighten the chuck mechanism 35 to fix each tractor unit 30. By this operation, the pair of tractor units 30 are fixed at positions along both ends of the continuous copying paper 100. The paper feed support member 39 that supports the continuous copy paper 100 from below between the tractor units 30 can be manually moved. Therefore, after fixing the pair of tractor units 30, any position between the tractor units 30 is fixed. Move to.

  The tractor cover 37 of the tractor unit 30 is provided with a guide base portion 38 for fixing the guide frame 50. The guide pedestal 38 is a rod-like member that is fixed to the front end of the tractor cover 37 or is formed integrally with the tractor cover 37. Two insertion holes 38A are formed on the upper surface of the guide pedestal 38, and a guide frame 50 having a shape obtained by bending an elongated rod-like or pipe-like material is inserted into the insertion hole 38A. The upper end portion of the guide frame 50 is slightly inclined rearward and guides the continuous copying paper 100 rearward.

Here, as shown in FIGS. 2 to 3, the width of the guide frame 50 is very small with respect to the size of the continuous copying paper 100 in the width direction. For example, the width of the paper feed guide 27 shown in FIG. 2 is a size that can be adapted to the width size of the maximum continuous copying paper 100 that can be used in the printer 1. Compared with the width of the paper feed guide 27, the width of the guide frame 50 is very small as is apparent from the drawing. Therefore, depending on the width size of the continuous copy paper 100, the guide frame 50 may be clearly smaller than the continuous copy paper 100.
However, since the guide frame 50 is always located at the side edge of the continuous copy paper 100 and the continuous copy paper 100 does not fall off from the guide frame 50, the guide frame 50 is much larger than the width size of the continuous copy paper 100. Even if the small guide frame 50 is used, the continuous copying paper 100 can be reliably guided. This is because the guide frame 50 is always positioned at both ends of the continuous copying paper 100 together with the tractor unit 30 because the guide frame 50 is fixed to the tractor unit 30.

As described above, the transport mechanism of the printer 1 records an image on the continuous copy paper 100 fed from the outside of the main body 10 and discharges it in the discharge direction DO reversed from the feed direction DI. In the transport path for transporting the continuous copy paper 100, the transport direction of the continuous copy paper 100 is reversed by the platen 25 after recording by the recording head 20, and the transport direction of the reversed continuous copy paper 100 is further turned by the paper discharge guide 42. Since the guide frame 50 for guiding the continuous copy paper 100 is provided on the downstream side of the paper discharge guide 42 so as to hold the direction turned by the paper discharge guide 42, the interlayer generated on the continuous copy paper 100 in the platen 25 is provided. The deviation is reduced by turning the paper discharge guide 42 and the effect of the reduction is ensured by the guide frame 50. For this reason, in the printer 1 having a conveyance path for reversing the continuous copy paper 100, interlayer displacement can be effectively suppressed.
Further, since the guide frame 50 can be moved in the width direction of the continuous copying paper 100, various types of continuous copying paper 100 including various sizes can be obtained by moving the guide frame 50 according to the width of the continuous copying paper 100. The recording medium can be easily accommodated, and even when the guide frame 50 is reduced in size, it can accommodate the wide continuous copying paper 100. For this reason, there is no problem in making the guide frame 50 smaller than the width of the continuous copying paper 100 as in the first embodiment, and further miniaturization is easy.

  Further, by fixing the guide frame 50 to the tractor unit 30, if the position of the tractor unit 30 is adjusted in accordance with the width size of the continuous copying paper 100, the position of the guide frame 50 is continuously increased without the user's intention. The position is adjusted according to the width size of the copy paper 100. Thereby, no special operation is required, and the position of the guide frame 50 can always be set to the optimum position, and the interlayer displacement can be suppressed more effectively.

  Furthermore, the guide frame 50 is fixed by a guide base portion 38 provided on the tractor cover 37 that can be opened and closed. The tractor cover 37 is opened and closed so as to rotate about the hinge 37A (FIG. 3). Accordingly, when the tractor cover 37 is opened and closed in order to attach and detach the continuous copying paper 100 in the tractor unit 30, the guide frame 50 fixed to the tractor cover 37 also rotates together with the tractor cover 37. The rotation range may be a range in which the continuous copying paper 100 can be attached to and detached from the tractor unit 30. Specifically, the rotation range is approximately 90 degrees, so that the guide frame 50 is attached to the main body 10 when the tractor cover 37 is opened and closed. The possibility of interference with other parts is small, and the possibility that the guide frame 50 will obstruct the opening and closing of the tractor cover 37 is also small. Here, in order to avoid interference between the guide frame 50 and the other part of the main body 10, a relief (concave part) may be formed in the guide frame 50 so as not to contact the other part when the tractor cover 37 is opened.

  Although the case where the guide frame 50 is fixed to the tractor unit 30 has been described as an example in the first embodiment, the present invention is not limited to this and is fixed to other parts of the main body 10. May be. This case will be described as a second embodiment.

[Second Embodiment]
FIG. 5 is a perspective view showing a configuration of a dot impact printer 1A (hereinafter referred to as a printer 1A) according to a second embodiment to which the present invention is applied. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
In the printer 1A shown in FIG. 5, a guide frame 55 configured similarly to the guide frame 50 is fixed to the sheet guide 28. Further, the printer 1 </ b> A includes a tractor unit 45 including a tractor cover 46 that does not have the guide base 38. The tractor unit 45 is obtained by replacing the tractor cover 37 with the tractor cover 46 in the tractor unit 30 described above, and other parts are configured in the same manner as the tractor unit 30.

The sheet guide 28 is a wall-like member extending in the main scanning direction of the main body 10. In the printer 1, a plurality of insertion portions 56 as fixed portions are arranged side by side on the rear surface of the sheet guide 28. Yes.
The guide frame 55 has a shape obtained by bending an elongated rod-like or pipe-like material like the guide frame 50.
The insertion portion 56 has a hole into which the lower end of the guide frame 55 can be inserted, and the guide frame 50 can be fixed by inserting the lower end of the guide frame 50 into two adjacent insertion portions 56. By arranging the plurality of insertion portions 56 side by side, the guide frame 50 can be fixed at an arbitrary position in the main scanning direction. In other words, the guide frame 50 can be moved in the width direction of the continuous copying paper 100. It has become.

Similar to the printer 1 in the first embodiment, the printer 1A according to the second embodiment records an image on the continuous copying paper 100 fed from the outside of the main body 10 and is reverse to the feeding direction DI. In the transport path in which the continuous copy paper 100 is transported by this transport mechanism, the platen 25 reverses the transport direction of the continuous copy paper 100 after recording by the recording head 20 and the reversed continuous copy paper. The conveyance direction of the paper 100 is further turned by the paper discharge guide 42, and a guide frame 55 for guiding the continuous copying paper 100 is provided on the downstream side of the paper discharge guide 42 so as to hold the direction turned by the paper discharge guide 42. Thus, the displacement of the interlayer generated in the continuous copy paper 100 in the platen 25 is reduced by turning the sheet discharge guide 42, and the effect of this reduction is reduced. It shall ensure the guide frame 55. For this reason, in the printer 1 </ b> A having a conveyance path for reversing the continuous copy paper 100, interlayer displacement can be effectively suppressed.
Further, since the guide frame 55 can be fixed by being inserted into an arbitrary insertion portion 56 of the insertion portions 56 provided on the sheet guide 28, the guide frame 55 can be moved in the width direction of the continuous copying paper 100. Accordingly, the guide frame 55 can be moved in accordance with the width of the continuous copying paper 100 to easily cope with various recording media including the continuous copying paper 100 of various sizes. A wide continuous copying paper 100 can be handled. Therefore, there is no problem in making the guide frame 55 smaller than the width of the continuous copying paper 100, and further miniaturization is easy.

  In addition, each said embodiment shows the one aspect | mode which applied this invention, Comprising: This invention is not limited to the said embodiment. For example, in each of the above embodiments, the continuous copying paper 100 is fed by the tractor units 30 and 45 provided at the rear part of the main body 10 of the dot impact printer 1 or 1A, and the continuous copying paper 100 is moved backward from the upper part of the main body 10. Although the description has been given by taking the configuration of discharging as an example, the present invention is not limited to this. For example, the recording medium is fed from the front of the main body 10 and the recording medium after recording is forwarded from the front or upper part. It is good also as a structure discharged | emitted toward. In the above-described embodiment, the configuration including the platen 25 that is a roll platen as a part of the transport mechanism has been described as an example. For example, as the transport mechanism, one set or a plurality of sets of rollers that transport the recording medium In this case, a configuration including a flat platen may be used. Further, the reversing unit that reverses the conveyance direction of the continuous copy paper 100 is not limited to the platen 25 but may be a conveyance roller. Furthermore, the specific shapes of the guide frames 50 and 55 are also arbitrary, and a synthetic resin or metal thin plate may be used. In this case, the guide pedestal portion 38 and the insertion portion 56 have slits into which the thin plate can be inserted. What is necessary is just to provide, and it can change arbitrarily also about another detailed structure.

  In the above embodiment, the case where the continuous copying paper 100 is used as the recording medium has been described. However, roll paper may be used as the recording medium. In addition, the recording apparatus is not limited to a dot impact type printer, but an ink jet printer that performs recording by discharging ink, a thermal printer that records on a thermal roll paper using a thermal head, various printers such as a thermal sublimation printer, and the like, The present invention can also be applied to other electronic devices equipped with these printers as mechanical parts.

  DESCRIPTION OF SYMBOLS 1 ... Dot impact printer (recording apparatus), 10 ... Main body, 20 ... Recording head, 21 ... Carriage, 25 ... Platen (conveyance mechanism, reversing part), 26A, 26B ... Driven roller, 28 ... Sheet guide, 30 ... Tractor unit (Conveyance mechanism), 37 ... tractor cover, 37A ... hinge, 38 ... guide base, 41 ... cover, 42 ... discharge guide (turning part), 50, 55 ... guide frame (guide member), 56 ... insertion part ( (Fixed portion), 100... Continuous copying paper (recording medium), DI... Feeding direction, DO.

Claims (4)

In a recording apparatus for recording on a recording medium by a recording head,
A feeding mechanism for feeding the recording medium to the recording head and discharging the recording medium after recording by the recording head;
A reversing unit for reversing the conveyance direction of the recording medium after recording by the recording head on a conveyance path for conveying the recording medium by the conveyance mechanism, and a turn for further turning the conveyance direction of the recording medium reversed at the reversing unit. And
A guide member for guiding the recording medium so as to hold the direction turned by the turning portion downstream of the turning portion is provided so as to be movable in the width direction of the recording medium;
A recording apparatus. The transport mechanism includes a tractor that feeds the recording medium from the outside of the recording apparatus to the recording head, and the tractor is arranged to be movable in the width direction of the recording medium,
The guide member is attached to the tractor;
The recording apparatus according to claim 1. A plurality of fixing portions for fixing the guide member are provided on the downstream side of the turning portion so as to be aligned in the width direction of the recording medium,
The recording apparatus according to claim 1 or 2. Conveying the recording medium in a recording apparatus comprising: a recording head for recording on the recording medium; and a transport mechanism for feeding the recording medium to the recording head and discharging the recording medium after recording by the recording head A reversing unit that reverses the conveyance direction of the recording medium after recording by the recording head, and a turning unit that further turns the conveyance direction of the recording medium reversed by the reversing unit,
A guide member that guides the recording medium so as to hold the direction of turning in the turning portion downstream of the turning portion, is provided movably in the width direction of the recording medium;
A guide mechanism in a recording apparatus.

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