JP2007261779A - Recording device, liquid jetting device, and manufacturing method for recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily prevent disorder of quality of recording at recording paper feed mode switching time when making recording without boundary at an upper end and a lower end of a recording paper and also making very high quality recording to obtain proper results of recording. <P>SOLUTION: In this recording device, a parallelism adjusting device 50 adjusts parallelism of a rotary shaft 40 for a conveyance driving roller 30 by displacing a right side shaft end of the rotary shaft 40 of a delivery driving roller 41 in a Y direction. When the direction A of paper feeding by the conveyance driving roller 30 and a conveyance driven roller 43 skews, adjustment is made by the parallelism adjusting device 50 so that the direction B of paper feeding by the delivery driving roller 41 and a delivery driven roller 42 becomes parallel with the direction A of paper feeding. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a recording apparatus for recording on a recording medium and a method for manufacturing the recording apparatus. The present invention also relates to a liquid ejecting apparatus.

Here, the liquid ejecting apparatus uses an ink jet recording head, and is not limited to a recording apparatus such as a printer, a copying machine, and a facsimile machine that discharges ink from the recording head to perform recording on a recording medium. And a device that ejects a liquid corresponding to the application from a liquid ejecting head corresponding to the ink jet recording head to an ejected medium corresponding to a recording medium, and adheres the liquid to the ejected medium. .
In addition to the recording head, as a liquid ejecting head, a color material ejecting head used for manufacturing a color filter such as a liquid crystal display, and an electrode material (conductive paste) used for forming an electrode such as an organic EL display or a surface emitting display (FED) Examples thereof include an ejection head, a bioorganic matter ejection head used for biochip production, and a sample ejection head as a precision pipette.

  There is a printer as an example of a recording apparatus or a liquid ejecting apparatus. The printer is provided on the downstream side of the recording head, on the upstream side of the recording head, on the downstream side of the recording head, and on the downstream side of the recording head. Some have a discharge roller for discharging a recording sheet on which recording has been performed. When the recording paper is conveyed, the recording paper may be skewed (skew), and Patent Documents 1 to 3 describe examples of means for correcting the skew of the recording paper.

JP 63-112180 A Japanese Patent Laid-Open No. 4-169259 Japanese Patent Application Laid-Open No. 5-112052

  By the way, in recent years, ink jet printers that can perform so-called borderless recording in which recording is performed on all four sides of a recording sheet without margins have become mainstream. Further, while performing borderless recording, high-quality recording equivalent to a silver salt photograph can be performed using a photo-dedicated paper represented by glossy paper.

Here, when borderless recording is performed on the upper and lower ends of a recording sheet, the following three sheet feeding modes can occur.
(1) A sheet feeding mode in which the recording sheet receives a feeding force only from the conveying roller (a state where the upper end of the recording sheet does not reach the discharge roller).
(2) A sheet feeding mode in which the recording sheet receives feeding force from both the conveying roller and the discharging roller (a state where the upper end of the recording sheet reaches the discharging roller and the lower end does not come out of the conveying roller).
(3) A sheet feeding mode in which the recording sheet receives a feeding force only from the discharge roller (a state where the lower end of the recording sheet is pulled out of the conveying roller).

Therefore, if the feeding direction of the recording paper is slightly different for each of the paper feeding modes, the recording quality may be disturbed when the paper feeding mode is switched.
Such disturbance in recording quality does not occur if the paper feed direction by the transport roller and the discharge roller is an ideal direction, that is, a direction that is precisely perpendicular to the scanning direction of the print head, but the paper feed direction by the transport roller is The paper feed direction by the transport roller is precisely along the direction perpendicular to the scan direction of the recording head, because it depends on the outer diameter accuracy or assembly accuracy of the frame and transport roller constituting the printer base. It is extremely difficult to do. The same applies to the discharge roller.

  Therefore, the present invention has been made in view of such a situation, and an object of the present invention is to perform a recording paper feed mode when performing borderless recording on the upper end and lower end of the recording paper and performing recording with extremely high image quality. It is to prevent the recording quality from being disturbed at the time of switching and to obtain an appropriate recording result.

  In order to solve the above-described problems, a first aspect of the present invention is a recording unit that performs recording on a recording medium, a conveyance driving roller that is provided upstream of the recording unit, and is driven to rotate, and the conveyance driving roller. A conveying means for conveying the recording medium to the downstream side, and a discharge drive provided on the downstream side of the recording means for transmitting the driving force to the rotating shaft. A recording apparatus comprising: a roller and a discharge driven roller that is driven to rotate in contact with the discharge drive roller; and a discharge unit that discharges a recording medium on which recording has been performed. A parallelism adjusting means for adjusting the parallelism of the rotation axis of the discharge drive roller with respect to the rotation axis of the recording medium, and adjusting the parallelism by the parallelism adjusting means, whereby the recording medium by the conveying means The feeding direction of the recording medium by the discharging means is adjustable with respect to the feeding direction of the recording medium, and when the feeding direction of the recording medium by the conveying means is skewed, the feeding of the recording medium by the discharging means The parallelism is adjusted by the parallelism adjusting means so that the direction is parallel to the feeding direction of the recording medium by the conveying means.

  According to this aspect, the recording apparatus includes the parallelism adjusting unit that adjusts the parallelism of the rotation axis of the discharge driving roller with respect to the rotation axis of the conveyance driving roller, and the feeding direction of the recording medium by the conveying unit is skewed. Sometimes, the parallelism is adjusted by the parallelism adjusting means so that the recording medium feeding direction by the discharging means is parallel to the feeding direction of the recording medium by the conveying means. When performing borderless recording at the lower end, before and after the leading edge of the recording medium reaches the discharging means, and before and after the trailing edge of the recording medium comes out of the conveying means, that is, before and after switching of the feeding mode, the recording medium feeding direction Therefore, even when the recording medium is fed in a skewed direction by the conveying means, it is possible to prevent the recording quality from being disturbed during borderless recording.

According to a second aspect of the present invention, in the first aspect, the parallelism is configured to be adjustable on a plane parallel to the conveyance direction of the recording medium.
According to this aspect, since the parallelism can be adjusted on a plane parallel to the conveyance direction of the recording medium, the sensitivity of the change in the feeding direction of the recording medium when the parallelism is adjusted is high. The feeding direction of the recording medium can be easily adjusted.

  According to a third aspect of the present invention, there is provided a recording means for recording on a recording medium, a transport driving roller provided on the upstream side of the recording means, and a transport driven roller that is driven to rotate in contact with the transport drive roller. A conveying unit configured to include a roller and configured to convey a recording medium downstream; a discharge driving roller provided on a downstream side of the recording unit; and a driving force transmitted to a rotation shaft; and the discharge driving roller. And a discharge device for discharging a recording medium on which recording has been performed. The recording device includes a discharge drive roller and a discharge driven roller pair. A plurality of discharge drive rows provided with a plurality of loads at appropriate intervals in a direction orthogonal to the discharge direction of the recording medium, and with a plurality of loads when the discharge driven roller contacts the discharge drive roller. And a load adjusting means for adjusting the load so as to be different between the pair of discharge driven rollers, and by adjusting the load by the load adjusting means, the conveyance means is configured to feed the recording medium in the feeding direction. The feeding direction of the recording medium by the discharging means is configured to be adjustable, and when the feeding direction of the recording medium by the conveying means is skewed, the feeding direction of the recording medium by the discharging means is the conveying means. The load is adjusted by the load adjusting means so as to be parallel to the recording medium feeding direction.

  According to this aspect, the load when the discharge driven roller contacts the discharge drive roller is different between a pair of discharge drive rollers and discharge driven rollers provided in a direction orthogonal to the discharge direction of the recording medium. Load adjusting means for adjusting the load, and when the recording medium feeding direction by the conveying means is skewed, the recording medium feeding direction by the discharging means is the same as that of the recording medium by the conveying means. Since the load is adjusted by the load adjusting means so as to be parallel to the feeding direction, before and after the leading edge of the recording medium reaches the discharging means when performing borderless recording on the upper and lower ends of the recording medium. Even if the recording medium feeding direction is not shifted before and after the trailing edge of the recording medium comes out of the conveying means, the feeding direction of the recording medium by the conveying means is skewed. No disturbance of the recording quality at the time of recording can be prevented.

  According to a fourth aspect of the present invention, there is provided a liquid ejecting unit that ejects liquid onto the ejection target medium, a transport driving roller that is provided on the upstream side of the liquid ejecting unit, and is driven to rotate in contact with the transport driving roller. A conveying unit configured to include a conveyance driven roller configured to convey a medium to be ejected downstream, a discharge driving roller provided on the downstream side of the liquid ejecting unit, and a driving force transmitted to a rotating shaft, and the discharge A liquid ejecting apparatus comprising: a discharge driven roller that is driven to rotate in contact with the drive roller; and a discharge unit that discharges the liquid ejected medium. A parallelism adjusting unit that adjusts the parallelism of the rotation axis of the discharge driving roller with respect to the axis, and the parallelism is adjusted by the parallelism adjusting unit; The feed direction of the ejected medium by the discharge means is adjustable with respect to the feed direction, and the feed direction of the ejected medium by the discharge means when the feed direction of the ejected medium by the transport means is skewed However, the parallelism is adjusted by the parallelism adjusting means so as to be parallel to the feeding direction of the ejection medium by the conveying means.

  According to a fifth aspect of the present invention, there is provided a liquid ejecting unit that ejects a liquid onto an ejected medium, a transport driving roller that is provided on the upstream side of the liquid ejecting unit, and is driven to rotate in contact with the transport driving roller. A conveying unit configured to include a conveyance driven roller configured to convey a medium to be ejected downstream, a discharge driving roller provided on the downstream side of the liquid ejecting unit, and a driving force transmitted to a rotating shaft, and the discharge A liquid ejecting apparatus comprising a discharge driven roller that rotates in contact with the drive roller and that discharges the medium to be ejected, the liquid ejecting apparatus comprising: the discharge drive roller; A plurality of discharge driven rollers are provided at appropriate intervals in a direction orthogonal to the discharge direction of the ejected medium, and the load when the discharge follower roller contacts the discharge drive roller is A load adjusting means for adjusting the load so as to be different between a pair of the discharge driving roller and the discharge driven roller provided in a plurality of directions orthogonal to the discharge direction, and adjusting the load by the load adjusting means; Is configured to be able to adjust the feeding direction of the ejection medium by the discharge means relative to the feeding direction of the ejection medium by the conveyance means, and when the feeding direction of the ejection medium by the conveyance means is skewed, The load is adjusted by the load adjusting means so that the ejection direction of the ejection medium by the discharging means is parallel to the feeding direction of the ejection medium by the transport means.

  According to a sixth aspect of the present invention, there is provided a recording means for recording on a recording medium, a transport driving roller provided on the upstream side of the recording means, and a transport driven roller that is driven to rotate in contact with the transport drive roller. A conveying unit configured to include a roller and configured to convey a recording medium downstream; a discharge driving roller provided on a downstream side of the recording unit; and a driving force transmitted to a rotation shaft; and the discharge driving roller. And a discharge unit that discharges the recording medium on which recording has been performed, and includes a discharge driven roller that is driven to rotate, and a recording medium feeding direction by the transport unit When the recording medium is skewed, the discharge drive with respect to the rotation axis of the transport drive roller is set so that the recording medium feed direction by the discharge means is parallel to the feed direction of the recording medium by the transport means. By adjusting the parallelism of the axis of rotation of the roller, characterized in that for fixing the rotating shaft of the discharge driving roller.

  According to this aspect, when the feeding direction of the recording medium by the conveying unit is skewed, the feeding direction of the recording medium by the discharging unit is parallel to the feeding direction of the recording medium by the conveying unit. In addition, since the rotation axis of the discharge drive roller is fixed by adjusting the parallelism of the rotation axis of the discharge drive roller with respect to the rotation axis of the transport drive roller, marginless recording is performed on the upper and lower ends of the recording medium. In this case, there is no deviation in the feeding direction of the recording medium before and after the leading edge of the recording medium reaches the discharging means and before and after the trailing edge of the recording medium comes out of the conveying means. Even when the direction is skewed, it is possible to prevent the recording quality from being disturbed during borderless recording.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 9. Here, FIG. 1 is an external perspective view of the main body of the printer 1 (with the outer case removed), FIG. 2 is a sectional side view thereof, FIG. 3 is a plan view thereof, and FIG. 4 is a holder for supporting the discharge driven roller 43. 47 is a cross-sectional view taken along a plane (XZ plane) parallel to the main scanning direction (X direction). FIG. 5 is a cross-sectional view of the holder 47 taken along a plane (YZ plane) parallel to the paper transport direction (Y direction). 6 is a perspective view of the main body of the printer 1 (with some components removed from FIG. 3), FIG. 7 is a perspective view of the parallelism adjusting device 50, and FIGS. It is a figure equivalent to a top view.

  Hereinafter, an outline of an ink jet printer (hereinafter referred to as “printer”) 1 as an example of a recording apparatus or a liquid ejecting apparatus according to the present invention will be described first with reference to FIGS. 1 and 2. In the following, the left direction in FIG. 2 (the front side of the printer) is referred to as “downstream side” of the sheet conveyance path, and the right direction in FIG. 2 is referred to as “upstream side”.

  The printer 1 includes a feeding device 2 capable of setting a recording sheet (mainly cut sheet paper: hereinafter referred to as “sheet P”) as an example of “recording medium” and “ejection medium” in an inclined posture at the rear part, The paper P is fed from the feeding device 2 toward the conveying means 4 on the downstream side. The fed paper P is transported (sub-scanned) by the transport unit 4 to the downstream recording head 36 (recording unit 3), and recording is performed. Then, the paper P on which recording has been performed by the recording head 36 is discharged to the front of the apparatus by the discharge means 5 on the downstream side.

Hereinafter, components on the paper conveyance path of the printer 1 will be described in more detail. The feeding device 2 includes a hopper 11, a feeding roller 12, a retard roller 13, a return lever 14, and other components not shown.
The hopper 11 is formed of a plate-like body, and is provided so as to be able to swing around an upper swinging fulcrum 11a. The pressure contact posture to be switched and the separation posture to be separated from the feeding roller 12 are switched. The feeding roller 12 has a substantially D shape when viewed from the side, and feeds the uppermost sheet P pressed by the arc portion to the downstream side.

  The retard roller 13 is provided so as to be able to press-contact with the arc portion of the feeding roller 12 and is provided with a predetermined rotational resistance (torque). If only a plurality of sheets of paper P exist between the feed roller 12 and the retard roller 13, the paper does not rotate. In this state, the paper P is prevented from being double fed. The return lever 14 is provided so as to be swingable when the paper P feeding path is viewed from the side. By swinging, the return lever 14 returns the succeeding and subsequent sheets P to the hopper 11.

Next, a detecting means (not shown) for detecting the passage of the paper P is formed between the feeding device 2 and the transporting means 4, and a feeding posture of the paper P is formed and the paper P feeding roller 12 is formed. A guide roller 26 is provided to prevent the contact load to reduce the conveyance load.
The transport unit 4 includes a transport drive roller 30 that is rotationally driven by a motor (not shown), and a transport driven roller 31 that is driven to rotate while being pressed against the transport drive roller 30. The transport driving roller 30 is provided with an adhesion layer in which wear-resistant particles are substantially uniformly dispersed on the outer peripheral surface of a metal shaft extending in the paper width direction (main scanning direction: X direction). The surface is made of an elastic material such as an elastomer, and a plurality (six in this embodiment) are arranged in the axial direction of the transport driving roller 30.

  In the present embodiment, two transport driven rollers 31 are pivotally supported at the downstream end of the paper guide upper 24 so as to be freely rotatable. In the present embodiment, three paper guide upper rollers 31 are arranged in the paper width direction. As shown in FIG. The top 24 of the paper guide is provided so that the shaft 24a is pivotally supported by the main frame 7 so as to be swingable about the shaft 24a as seen from the side of the paper transport path, and the transport driven roller 31 is provided by the coil spring 25. It is urged in a direction in which it comes into pressure contact with the conveyance drive roller 30.

The paper P that has reached the transport means 4 is sub-scanned and sent downstream by the transport drive roller 30 rotating while being nipped by the transport drive roller 30 and the transport driven roller 31.
An ink jet recording head (hereinafter referred to as “recording head”) 36 and a pre-paper guide 37 disposed to face the recording head 36 are provided on the downstream side of the conveying means 4. The recording head 36 is provided at the bottom of the carriage 33. The carriage 33 is driven to reciprocate in the main scanning direction by a drive motor (not shown) while being guided by a carriage guide shaft 34 extending in the main scanning direction. The carriage 33 is mounted with independent ink cartridges (not shown) for each of a plurality of colors, and supplies ink to the recording head 36.

  A first rib 38a, a second rib 38b, and a third rib 38c are formed on the surface facing the recording head 36 on the front side 37 that defines the distance between the paper P and the recording head 36, and ink is supplied. Grooves 39a and 39b to be discarded are formed, and so-called marginless recording is performed in which recording is performed without margins on the edge of the paper P by using these grooves 39a and 39b.

  Specifically, for example, the borderless recording is performed on the upper end of the sheet P by ejecting ink to an area outside the upper end of the sheet P with the upper end of the sheet P positioned above the groove 39b. Similarly, borderless recording is performed on the lower end of the paper P by discharging ink to an area outside the lower end of the paper P with the lower end of the paper P positioned above the groove 39a. An ink absorbing material (not shown) that absorbs ink is disposed in the grooves 39a and 39b.

  Here, when borderless recording is performed on the upper end of the paper P, the upper end of the paper P does not reach the discharge means 5, so that the paper P receives a feeding force only from the transport means 4 (hereinafter referred to as this feed). The mode is called “first feed mode”). Next, when the upper end of the paper P reaches the discharge means 5, the paper P receives feed force from both the transport means 4 and the discharge means 5 (hereinafter, this feed mode is referred to as “second feed mode”). When the lower end of the sheet P is removed from the transport unit 4, the sheet P receives a feeding force only from the discharge unit 5 (hereinafter, this feeding mode is referred to as “third feeding mode”).

  Subsequently, an auxiliary roller 43 and a discharge unit 5 are provided on the downstream side of the recording head 36. The auxiliary roller 43 is provided so as to be driven and rotated in contact with the recording surface of the paper P on the paper conveyance path from the area where the recording head 36 and the paper guide front 37 are opposed to the discharge means 5. The function of preventing the lift from the front 37 and maintaining the distance between the paper P and the recording head 36 is achieved.

The discharge means 5 includes a discharge drive roller 41 attached to a rotating shaft 40 that is rotated by transmission of power by a motor (not shown), and a discharge driven roller 42 that is driven to rotate in contact with the discharge drive roller 41. ing.
In the present embodiment, a plurality of discharge drive rollers 41 are formed by rubber rollers, and a plurality of discharge drive rollers 41 are provided at an appropriate interval in the axial direction of the rotary shaft 40 extending in the main scanning direction (see FIG. 6). A toothed roller having a plurality of teeth on the outer periphery is used as the discharge driven roller 42 (the auxiliary roller 43 is also the same), a frame Assy 45 (FIG. 3) having a long shape in the main scanning direction, and a plurality of discharge drive rollers 41. A plurality are provided to correspond. The frame Assy 45 includes a frame 46 formed of a metal plate material and a holder 47 formed of a resin material.

  The discharge driven roller 42 uses the bar spring 48 shown in FIGS. 4 and 5 as a rotation axis. The bar spring 48 extends in the main scanning direction and is supported by the holder 47 to pivotally support the plurality of discharge driven rollers 42. Therefore, the discharge driven roller 42 is elastically brought into contact with the discharge drive roller 43 by the bar spring 48.

  Here, since the plurality of discharge driven rollers 42 use a single bar spring 48 as a common rotating shaft, the bar spring 48 can be compared with a configuration in which one bar spring 48 is used for one discharge driven roller 42. The supporting interval (interval indicated by symbol d in FIG. 4) can be reduced, and the supporting span (interval indicated by symbol L in FIG. 4) can be ensured large.

Next, returning to FIG. 2, the paper P recorded by the recording head 36 is rotated by the discharge drive roller 41 while being nipped by the discharge drive roller 41 and the discharge driven roller 42, whereby the apparatus It is discharged toward the front (stacker not shown).
The above is the general configuration of the printer 1, and the parallelism adjusting device 50 as parallelism adjusting means will be described in detail below. As shown in FIG. 6, the left side shaft end of the conveyance drive roller 30 and the left side shaft end of the rotation shaft 40 of the discharge drive roller 41 are supported by the side frame left 7a, and the respective right side shaft ends are supported by the intermediate frame 8. A parallelism adjusting device 50 is provided at the right shaft end of the rotating shaft 40.

  The parallelism adjusting device 50 includes a bush member 52 (FIG. 7) that supports the right shaft end of the rotating shaft 40 and an operation lever 51 that rotates the bush member 52. The bush member 52 is rotatably provided on the intermediate frame 8 and supports the rotating shaft 40 so that the axis of the rotating shaft 40 is located at a position deviated from the rotation center. Therefore, when the operating lever 51 is rotated along the frame surface of the intermediate frame 8 to rotate the bush member 52, the right shaft end of the rotating shaft 40 is displaced, and the rotating shaft 40 is moved to the left shaft end (the left side of the side frame). The movement is performed with the position 7a) as a fulcrum.

  That is, by operating the operation lever 51, it is possible to adjust the parallelism of the rotation axis of the rotation shaft 40 with respect to the rotation axis of the transport drive roller 30 (hereinafter simply referred to as “parallelism” as necessary). . Any mechanism may be used for adjusting the parallelism of the rotating shaft 40 with respect to the transport driving roller 30 in this way.

  In the present embodiment, as shown in FIG. 7, the holder 47 constituting the frame Assy 45 is formed with an engaging portion 47 a that engages with the rotating shaft 40, and the frame Assy 45 swings together with the rotating shaft 40. Has been. Thereby, even if the rotating shaft 40 is swung, the positional relationship between the individual discharge driving rollers 41 and the discharge driven rollers 42 is not changed. The frame Assy 45 swings with the front frame engaging portion indicated by reference numeral 9a in FIG. 3 as a fulcrum.

  The parallelism adjustment can be performed, for example, on a plane (XY plane) parallel to the transport direction of the paper P. FIG. 8 shows, as an example, a state in which the right shaft end of the rotating shaft 40 is displaced slightly upstream, and the rotating shaft 40 is slightly swung in the counterclockwise direction in the drawing (imaginary line and reference numerals). Rotation shaft indicated by 40 ': In FIG. 8, the amount of swinging of the rotation shaft 40 is exaggerated for convenience).

  Here, the arrow A indicates the sheet feeding direction by the conveyance driving roller 30 and the conveyance driven roller 31. In the example of FIG. 8, the sheet feeding direction is the scanning direction of the recording head 36 (that is, the axis of the carriage guide shaft 34). It has a slight inclination with respect to the line T orthogonal to the direction. That is, the paper feed direction is skewed (note that the inclination of the paper feed direction A with respect to the line T is also exaggerated for convenience in FIG. 8).

  Here, it is desirable that the paper feed direction A is precisely coincident with the line T, but the diameter variation in the axial direction of the transport driving roller 30, the manufacturing variation of the main frame 7, the side frame left 7 a, the intermediate frame 8, or the assembly. It is difficult to precisely match the line T due to an error or the like.

  If the paper feed direction A by the transport drive roller 30 and the transport driven roller 43 is shifted from the paper feed direction by the discharge drive roller 41 and the discharge driven roller 42 indicated by reference numeral B, the upper and lower ends of the paper P are shifted. When performing borderless recording, the feed direction (skew tendency) of the paper P changes when the first feed mode is switched to the second feed mode or when the second feed mode is switched to the third feed mode. As a result, the recording result may be disturbed.

  Therefore, when the paper feed direction A is skewed, the parallelism of the rotary shaft 40 with respect to the transport drive roller 30 is adjusted so that the paper feed direction B is parallel to the paper feed direction A as shown in FIG. The rotating shaft 40 is fixed in the state. Thereby, when performing borderless recording on the upper and lower ends of the paper, it is possible to prevent the recording quality from being disturbed when the paper feed mode is switched.

  Note that since the sheet feeding directions A and B are both skewed, the recording result includes the influence of skew as a whole, but high-quality recording is performed using photo-dedicated paper such as glossy paper. In this case, the recording disturbance at the time of switching of the paper feeding mode rather than the influence of the skew is more conspicuous in the recording area, and therefore the above-described parallelism adjustment can result in a good recording result.

  In the case of manufacturing a printer that does not perform borderless recording on the upper and lower ends of the paper, the rotary shaft 40 is set so that the paper feed direction B is a direction that cancels the skew in the paper feed direction A as shown in FIG. The degree of parallelism may be adjusted. As a result, the skew can be corrected and the overall skew of the recording result on the paper can be prevented.

  By the way, the load when the discharge driven roller 42 comes into contact with the discharge drive roller 41 is made different between a pair of the discharge drive roller 41 and the discharge driven roller 42 provided in the main scanning direction, so that the conveyance drive roller It is also possible to change the sheet feeding direction B by the roller 41 and the transport driven roller 42.

  That is, by changing the load when the discharge driven roller 42 contacts the discharge drive roller 41 in the main scanning direction, the axial loss of the discharge driven roller 42 differs in the main scanning direction. For example, the discharge driven roller 42 is discharged. In a place where the driving roller 41 is in strong contact, the shaft loss of the discharge driven roller 42 becomes large and becomes a conveyance load, and the sheet is hardly conveyed. On the contrary, in a place where the discharge driven roller 42 is weakly in contact with the discharge drive roller 41, the axial loss of the discharge driven roller 42 is reduced, and the paper is easily conveyed. By utilizing such a property, the sheet feeding direction B by the discharge driving roller 41 and the discharge driven roller 42 can be changed.

  Any configuration may be used to vary the load when the discharge driven roller 42 comes into contact with the discharge drive roller 41 in the main scanning direction. The right shaft end of the rotating shaft 40 is not configured to be displaced in the XY plane, but is configured to be displaced in the YZ plane, and the linkage state between the rotating shaft 40 and the frame Assy 45 is changed. The rotation shaft 40 is configured to tilt in the YZ plane with respect to the frame Assy 45.

  Or, conversely, the rotating shaft 40 is placed in a fixed state, and the right end or the left end of the frame Assy 45 is configured to be displaced in the XY plane, that is, the parallelism of the frame Assy 45 with respect to the rotating shaft 40 in the XY plane is set. If it is configured to adjust, the paper feed direction (Y direction) position of the discharge driven roller 42 with respect to the discharge drive roller 41 differs in the main scanning direction, and thereby the load when the discharge driven roller 42 contacts the discharge drive roller 41. Can be made different in the main scanning direction.

  With this configuration, the parallelism adjusting device 50 functions as a “load adjusting means”, and a plurality of loads when the discharge driven roller 42 contacts the discharge driving roller 41 are provided in the main scanning direction. The driving roller 41 and the discharge driven roller 42 can be made different between the pair.

1 is an external perspective view of an apparatus main body of a printer according to the present invention. FIG. 3 is a side sectional view of the printer main body according to the present invention. FIG. 2 is a plan view of the apparatus main body of the printer according to the present invention. Sectional drawing which cut | disconnected the holder which supports a discharge driven roller by the XZ plane. Sectional drawing which cut | disconnected the holder which supports a discharge driven roller by the YZ plane. FIG. 2 is a perspective view of a printer main body of the present invention. The perspective view of a parallelism adjustment apparatus. FIG. 2 is a plan view of the apparatus main body of the printer according to the present invention. FIG. 2 is a plan view of the apparatus main body of the printer according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inkjet printer, 2 Feeding device, 3 Recording means, 4 Conveying means, 5 Discharge means, 7 Main frame, 7a Side frame left, 8 Intermediate frame, 11 Hopper, 12 Feeding roller, 13 Retard roller, 14 Return lever, 24 on paper guide, 25 coil spring, 26 guide roller, 30 transport drive roller, 31 transport driven roller, 33 carriage, 34 carriage guide shaft, 36 recording head, 37 before paper guide, 38a-38c rib, 39a, 39b groove, 41 discharge drive roller, 42 discharge driven roller, 43 guide roller, 45 frame Assy, 46 frame, 47 holder, 48 bar spring, 50 parallelism adjusting device, 51 operation lever, 52 bushing member, P recording paper

Claims (6)

Recording means for recording on a recording medium;
A transport means for transporting a recording medium downstream, the transport drive roller being provided on the upstream side of the recording means and comprising a transport drive roller that is rotationally driven and a transport driven roller that is driven to rotate in contact with the transport drive roller; ,
A recording target on which recording has been performed, comprising a discharge driving roller provided downstream of the recording means and having a driving force transmitted to a rotating shaft, and a discharge driven roller driven to rotate in contact with the discharge driving roller. A recording apparatus comprising: a discharging unit that discharges the medium;
A parallelism adjusting unit that adjusts the parallelism of the rotation axis of the discharge driving roller with respect to the rotation axis of the conveying drive roller, and the recording medium by the conveying unit by adjusting the parallelism by the parallelism adjusting unit. The feeding direction of the recording medium by the discharging means with respect to the feeding direction is configured to be adjustable,
When the recording medium feeding direction by the conveying means is skewed, the parallelism is such that the recording medium feeding direction by the discharging means is parallel to the recording medium feeding direction by the conveying means. Adjusted by the parallelism adjusting means,
A recording apparatus.   The recording apparatus according to claim 1, wherein the parallelism can be adjusted on a plane parallel to the conveyance direction of the recording medium. Recording means for recording on a recording medium;
A transport means for transporting a recording medium downstream, the transport drive roller being provided on the upstream side of the recording means and comprising a transport drive roller that is rotationally driven and a transport driven roller that is driven to rotate in contact with the transport drive roller; ,
A recording target on which recording has been performed, comprising a discharge driving roller provided downstream of the recording means and having a driving force transmitted to a rotating shaft, and a discharge driven roller driven to rotate in contact with the discharge driving roller. A recording apparatus comprising: a discharging unit that discharges the medium;
A plurality of pairs of the discharge driving roller and the discharge driven roller are provided at appropriate intervals in a direction orthogonal to the discharge direction of the recording medium, and
A load adjusting means for adjusting the load so that a load when the discharge driven roller comes into contact with the discharge drive roller is different between a plurality of the discharge drive roller and the discharge driven roller pair provided;
By adjusting the load by the load adjusting means, the feeding direction of the recording medium by the discharging means can be adjusted with respect to the feeding direction of the recording medium by the conveying means,
When the feeding direction of the recording medium by the conveying unit is skewed, the load is set so that the feeding direction of the recording medium by the discharging unit is parallel to the feeding direction of the recording medium by the conveying unit. Adjusted by load adjusting means,
A recording apparatus. Liquid ejecting means for ejecting liquid onto the ejected medium;
Conveying means for conveying the ejected medium to the downstream side, which is provided on the upstream side of the liquid ejecting means and includes a transport driving roller that is rotationally driven and a transport driven roller that is driven to rotate in contact with the transport driving roller. When,
Liquid ejection was performed, comprising a discharge drive roller that is provided on the downstream side of the liquid ejection unit and that is driven to rotate in contact with the discharge drive roller and a drive force transmitted to the rotation shaft. A liquid ejecting apparatus comprising: a discharging unit that discharges a medium to be ejected;
A parallelism adjusting unit that adjusts the parallelism of the rotation axis of the discharge driving roller with respect to the rotation axis of the transporting drive roller, and adjusting the parallelism by the parallelism adjusting unit, whereby the medium to be ejected by the transporting unit The feed direction of the ejected medium by the discharge means relative to the feed direction is adjustable.
When the transport direction of the ejection medium by the transport unit is skewed, the parallelism is set so that the transport direction of the ejection medium by the discharge unit is parallel to the transport direction of the ejection medium by the transport unit. Adjusted by the parallelism adjusting means,
A liquid ejecting apparatus. Liquid ejecting means for ejecting liquid onto the ejected medium;
Conveying means for conveying the ejected medium to the downstream side, which is provided on the upstream side of the liquid ejecting means and includes a transport driving roller that is rotationally driven and a transport driven roller that is driven to rotate in contact with the transport driving roller. When,
Liquid ejection was performed, comprising a discharge drive roller that is provided on the downstream side of the liquid ejection unit and that is driven to rotate in contact with the discharge drive roller and a drive force transmitted to the rotation shaft. A liquid ejecting apparatus comprising: a discharging unit that discharges a medium to be ejected;
A plurality of pairs of the discharge driving roller and the discharge driven roller are provided at appropriate intervals in a direction orthogonal to the discharge direction of the ejection target medium,
A load adjusting means for adjusting the load so that a load when the discharge driven roller comes into contact with the discharge drive roller is different between a plurality of the discharge drive roller and the discharge driven roller pair provided;
By adjusting the load by the load adjusting means, it is configured to be able to adjust the feeding direction of the ejection medium by the discharge means relative to the feeding direction of the ejection medium by the transport means,
When the feeding direction of the ejection medium by the conveying means is skewed, the load is set so that the feeding direction of the ejection medium by the discharge means is parallel to the feeding direction of the ejection medium by the conveyance means. Adjusted by load adjusting means,
A liquid ejecting apparatus. Recording means for recording on a recording medium;
A transport means for transporting a recording medium downstream, the transport drive roller being provided on the upstream side of the recording means and comprising a transport drive roller that is rotationally driven and a transport driven roller that is driven to rotate in contact with the transport drive roller; ,
A recording target on which recording has been performed, comprising a discharge driving roller provided downstream of the recording means and having a driving force transmitted to a rotating shaft, and a discharge driven roller driven to rotate in contact with the discharge driving roller. A recording apparatus comprising: a discharging unit that discharges the medium;
When the feeding direction of the recording medium by the conveying means is skewed, the feeding direction is such that the feeding direction of the recording medium by the discharging means is parallel to the feeding direction of the recording medium by the conveying means. Adjusting the parallelism of the rotation axis of the discharge drive roller with respect to the rotation axis of the drive roller to fix the rotation shaft of the discharge drive roller;
A method of manufacturing a recording apparatus.

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