JP2007326707A - Recording material discharge device, recording device, and liquid jetting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording material discharge device capable of reducing the possibility of leaving the trace of contact with a discharge driven roller even in an area where the delivered amount of ink on a recording surface is large, a recording device having the recording material discharge device, and a liquid jetting device. <P>SOLUTION: This recording material discharge device 4 comprises a discharge roller 12 positioned on the downstream side of a recording part 3. The discharge roller is composed of a pair of rollers comprising a discharge drive roller 13 brought into contact with the non-recording surface of a recording material 5 and acting a feed force thereon and the discharge driven roller 14 brought into contact, at a predetermined load, with the recording surface of the recording material and driven rotatingly. The recording material discharge device further comprises a load changing device 16 capable of varying the load on the discharge driven roller 14 according to the discharged amount of ink. The load changing device 16 has a cam 17, and so formed that the deflection amount of a bar spring is changed according to the profile 18 of the cam by the rotation of the cam while coming into contact with the bar spring 15. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention includes a discharge roller positioned on the downstream side of the recording unit, and the discharge roller is in contact with the non-recording surface of the recording material and applies a feeding force to the recording surface of the recording material. The present invention relates to a recording material discharge device constituted by a pair of discharge driven rollers that are in contact with each other and driven to rotate, a recording device including the recording material discharge device, and a liquid ejecting device.

Here, the liquid ejecting apparatus is not limited to a recording apparatus such as a printer, a copying machine, and a facsimile machine in which an ink jet recording head is used and ink is ejected from the recording head to record on a recording material (conveyed material). Then, instead of ink, a liquid corresponding to the application is ejected from a liquid ejecting head corresponding to the recording head onto an ejected material (conveyed material) corresponding to a recording medium material, and the liquid is applied to the ejected material. Used to include the device to be attached.
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.

  Japanese Patent Application Laid-Open No. 2004-228561 describes that as a discharge roller of a recording apparatus, a pressing load of a discharge driven roller on a recording material is adjusted according to the thickness of the recording material. As a result, the discharge driven roller can come into contact with a recording material such as a CD having high rigidity and a large thickness with an appropriate pressing load.

  However, for the recording materials having the same thickness, the load is configured to be constant. When high-quality recording with color photographic quality is performed on a single recording material, a region with a large amount of ink discharge and a region with a small amount of ink are usually formed. Since the area where the ink discharge amount is large has a higher surface wet level than the area where the ink discharge amount is small, depending on the type of the recording material, the contact trace of the discharge driven roller may be visible. This tends to be higher for a recording material for high-quality recording.

Japanese Patent Laid-Open No. 9-249343

  SUMMARY OF THE INVENTION An object of the present invention is to provide a recording material discharge device, a recording device including the recording material discharge device, and a liquid ejecting device that can reduce the possibility of contact marks of the discharge driven roller remaining even in a region where the ink discharge amount is large on the recording surface. It is to provide.

  In order to achieve the above object, according to a first aspect of the present invention, there is provided a discharge roller that is provided on the downstream side of a recording unit, and the discharge roller is in contact with a non-recording surface of a recording material and acts on a discharge force. A recording material discharge device comprising a pair of a roller and a discharge driven roller that rotates in contact with a recording surface of the recording material with a predetermined load, wherein the load of the discharge driven roller is set to an ink discharge amount. It is characterized by comprising a load changing means that can be varied accordingly.

  According to the first aspect of the present invention, when the recording material is discharged by the discharge roller, the load of the discharge driven roller contacting the recording surface of the recording material can be changed according to the ink discharge amount by the load changing unit. Therefore, it is possible to adjust that the load is reduced for a recording area where the ink discharge amount is larger than a predetermined standard amount, or the load is increased for a small recording area. It is possible to reduce a possibility that the trace of contact of the discharge driven roller remains on the surface.

  According to a second aspect of the present invention, in the first aspect, the discharge driven roller is rotatably mounted on a bar spring, and the load is generated by a spring force corresponding to a deflection amount of the bar spring. The load changing means is configured to change the load by changing the deflection amount of the bar spring.

  According to the second aspect of the present invention, in addition to the function and effect of the first aspect, the load is generated by a spring force corresponding to the deflection amount of the bar spring, and the load changing means is Since the load is made variable by changing the amount of deflection of the bar spring, the load can be changed to a target size without strict accuracy.

According to a third aspect of the present invention, in the second aspect, the load changing means includes a cam, and the cam is rotated while abutting against the bar spring, so that the bar spring corresponds to the profile of the cam. It is characterized in that the bending amount is changed.
According to the third aspect of the present invention, in addition to the function and effect of the second aspect, the load changing means includes a cam, and the cam rotates in contact with the bar spring to thereby adjust the profile of the cam. Correspondingly, the amount of bending of the bar spring is changed so that the amount of bending of the bar spring can be easily changed only by determining the profile of the cam.

According to a fourth aspect of the present invention, in the third aspect, the cam is provided for each bar spring and is fixed to a single camshaft so as to rotate integrally.
According to the fourth aspect of the present invention, in addition to the effects of the third aspect, the cam is provided for each bar spring and is fixed to rotate integrally with one camshaft. The load can be changed in the discharge driven roller by simplifying the structure.

According to a fifth aspect of the present invention, there is provided a recording material conveying apparatus having a recording portion, a conveying roller for conveying the recording material toward the recording portion, and a recording material positioned downstream of the recording portion. A recording material discharge device having a discharge roller for discharging, wherein the recording material discharge device is one described in any one of the first to fourth aspects. It is a feature.
According to the fifth aspect of the present invention, it is possible to realize a recording apparatus in which the contact surface of the discharge driven roller is less likely to remain on the recording surface of the recording material and the region where the ink discharge amount is large.

According to a sixth aspect of the present invention, there is provided a control unit that controls each operation of the recording material conveying device, the recording unit, and the recording material discharging device according to the fifth aspect, and the control unit includes one sheet When performing recording on a recording material, increase / decrease data of the ink discharge amount in the conveyance direction is also sent, and the load is changed in accordance with the increase / decrease tendency of the increase / decrease data. Is.
According to the sixth aspect of the present invention, in addition to the function and effect of the fifth aspect, the control of the control unit can easily discharge the recording surface of the recording material to the area where the ink discharge amount is large. It is possible to reduce the possibility that the contact mark of the driven roller remains.

  A seventh aspect of the present invention is located on the downstream side of the liquid ejecting unit, the liquid ejecting material transport device having a transport roller that transports the liquid ejecting material toward the liquid ejecting unit, and the liquid ejecting unit. A liquid ejecting apparatus having a discharge roller that discharges the liquid ejecting material, wherein the liquid ejecting material ejecting apparatus includes a non-injecting liquid ejecting material. A discharge driving roller that is in contact with the surface and applies a feeding force and a discharge driven roller that rotates in contact with the injection surface of the liquid injection material with a predetermined load, and is configured to discharge the load of the discharge driven roller by liquid discharge It is characterized by comprising load changing means that can be varied according to the amount.

  Here, a control unit that controls each operation of the liquid injection material transport device, the liquid injection unit, and the liquid injection material discharge device is provided, and the control unit performs liquid injection on one liquid injection material. It is preferable that increase / decrease data of the liquid discharge amount in the transport direction is also sent and the load is changed in accordance with the increase / decrease tendency of the increase / decrease data.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an interior of an ink jet recording apparatus which is an example of a liquid ejecting apparatus to which a recording material discharging apparatus according to the present invention is applied, and FIG. 2 is a perspective view of the recording material discharging apparatus. 3 is a cross-sectional side view of the main part around the recording part of the recording apparatus, FIG. 4 is an enlarged perspective view of the main part of the recording material discharging apparatus, and FIG. 5 is a diagram for explaining the operation of the recording material discharging apparatus. (A) is a cross-sectional side view of the main part, (B) is a front view of the main part, FIG. 6 is also a diagram for explaining the operation of the recording material discharge device, and (A) is the main part side. Sectional drawing and (B) are principal part front views.

  As shown in FIG. 1, the ink jet recording apparatus includes a feeding unit 1, followed by a recording material conveying device 2, a recording unit 3, and a recording material discharging device 4 on the upstream side in the recording material feeding direction. Configured.

  The feeding unit 1 is composed of a known automatic feeding device. The recording material conveyance device 2 includes a conveyance roller 6 that conveys the recording material 5 fed from the feeding unit 1 toward the recording unit 3. The conveying roller 6 is constituted by a pair of a known conveying driving roller 7 and a conveying driven roller 8. The recording unit 3 includes a recording head 10 mounted on a carriage 9 that reciprocates in the main scanning direction, and a platen 11 that is disposed to face the recording head 10 and supports a back surface that is a non-recording surface of the recording material 5. . The recording material discharge device 4 includes a discharge roller 12 that discharges the recording material 5 to the outside of the recording device main body. The discharge roller 12 includes a pair of a known discharge drive roller 13 and a discharge driven roller 14.

  Hereinafter, the recording material discharge device 4 according to the present invention will be described in detail. As described above, the recording material discharge device 4 includes the discharge roller 12 positioned on the downstream side of the recording head 10. The discharge roller 12 is composed of a pair of a discharge drive roller 13 that is in contact with the back surface of the recording material 5 and applies a feeding force, and a discharge driven roller 14 that is driven to rotate in contact with the recording surface of the recording material with a predetermined load. ing. Here, the discharge driven roller 14 is rotatably attached to the rod spring 15 so that the load is generated by a spring force corresponding to the deflection amount of the rod spring 15 (FIG. 5). The discharge driven roller 14 is held by a dedicated holder 24 and attached to the discharge frame 25 via the holder 24 (FIG. 4). The discharge drive roller 13 is disposed and fixed to a single drive shaft 23 at predetermined intervals.

  In the present invention, a load changing device 16 is provided that makes the load of the discharge driven roller 14 variable in accordance with the amount of ink discharged from the recording head 10. The load changing device 16 is configured to change the load by changing the deflection amount of the bar spring 15. That is, the load changing device 16 includes a cam 17. The cam 17 rotates while contacting both ends of the bar spring 15 so that the amount of deflection of the bar spring 15 changes corresponding to the profile 18 of the cam 17 (FIG. 5, FIG. 6). FIG. 5 shows a state where the deflection amount T is large, and FIG. 6 shows a state where the deflection amount t is small.

  As shown in FIG. 2, a pair of the cams 17 is provided for each bar spring 15 and is fixed to a single cam shaft 19 so as to rotate integrally. A load changing gear 20 is fixed to the cam shaft 19, and the cam 17 is rotated by being rotated by receiving power from a power source (not shown) so that the deflection amount of the bar spring 15 can be changed. Yes.

  That is, the ink jet recording apparatus includes a control unit 21 that controls the operations of the recording material transport device 2, the recording unit 3, and the recording material discharge device 4, and the control unit 21 is a single recording material. 5, when the recording is executed, the ink discharge amount increase / decrease data in the transport direction is also sent, the cam shaft 19 is rotated in accordance with the increase / decrease tendency of the increase / decrease data, and the load is applied by the rotation phase of the cam shaft 19. It can be changed in multiple stages or continuously.

  Next, the operation of the recording material discharging apparatus 4 according to the above embodiment will be described with reference to FIGS. In the present embodiment, FIG. 5 shows the normal state of the load of the discharge driven roller 14, and FIG. 6 shows the load reduction state, and there are several stages corresponding to the rotational phase of the camshaft 19, but here 1 Only the stages are shown. The load shown in FIG. 5, that is, the deflection amount of the bar spring 15 is set by the phase of the cam 17 in correspondence with a standard amount that can be said to be an average amount of ink ejection. If the ink ejection amount does not exceed the standard amount, the entire surface recording can be executed and terminated with this load.

  When recording is performed on a single recording material 5 in which a large recording area is generated with respect to a predetermined standard amount, the ink discharge amount increase / decrease data is sent to the control unit 21. As shown in FIG. 6, the cam 17 is rotated so as to reduce the load. Thereby, a possibility that the contact trace of the discharge driven roller 14 may remain on the recording surface can be reduced. When data indicating that the ink discharge amount has returned to the standard amount is sent, the cam 17 is rotated to increase the load and return to the normal discharge state.

  As described above, the embodiment in which the recording material discharging apparatus of the present invention is applied to the ink jet recording apparatus has been described. However, the liquid ejecting is performed by ejecting liquid from the liquid ejecting head to the ejecting medium and attaching the liquid to the ejecting material. The present invention can be similarly applied to apparatuses. In this case, the above embodiment can be similarly applied to the liquid ejecting apparatus, assuming that the ejected material corresponds to the recording material 5 and the liquid ejecting head corresponds to the recording head 10.

1 is a perspective view of an interior of an ink jet recording apparatus that is an example of a liquid ejecting apparatus to which a recording material discharging apparatus according to the present invention is applied, with a housing removed. The perspective view of the said recording material discharge apparatus. FIG. 3 is a cross-sectional side view of a main part around a recording unit of the recording apparatus. The principal part expansion perspective view of a recording material discharge apparatus. It is a figure for operation | movement description of a recording material discharge apparatus, (A) is principal part sectional drawing, (B) is a principal part front view. It is a figure for operation | movement description of a recording material discharge apparatus, (A) is principal part sectional drawing, (B) is a principal part front view.

Explanation of symbols

  2 Recording Material Conveying Device, 3 Recording Unit, 4 Recording Material Discharging Device, 5 Recording Material, 6 Conveying Roller, 10 Recording Head, 12 Discharging Roller, 13 Discharging Driving Roller, 14 Discharging Followed Roller, 15 Bar Spring, 16 Load change device, 17 cam, 18 cam profile, 19 cam shaft, 20 load change gear, 21 control unit, 23 drive shaft, 24 holder, 25 discharge frame

Claims (7)

A discharge roller is provided on the downstream side of the recording unit. The discharge roller is in contact with the non-recording surface of the recording material and applies a feeding force to the recording surface of the recording material and is driven by a predetermined load. A recording material discharge device composed of a pair with a rotating discharge driven roller,
A recording material discharging apparatus comprising load changing means for making the load of the discharge driven roller variable according to an ink discharge amount.   The discharge driven roller according to claim 1, wherein the discharge driven roller is rotatably mounted on a bar spring, the load is generated by a spring force corresponding to a deflection amount of the bar spring, and the load changing unit is configured to A recording material discharging apparatus, wherein the load is made variable by changing a deflection amount.   3. The load changing means according to claim 2, wherein the load changing means includes a cam, and the cam spring rotates while contacting the bar spring so that the amount of deflection of the bar spring changes according to the profile of the cam. A recording material discharging apparatus characterized by the above.   4. The recording material discharging apparatus according to claim 3, wherein the cam is provided for each bar spring and fixed so as to rotate integrally with one cam shaft. A recording material conveying apparatus having a recording unit, a conveying roller that conveys the recording material toward the recording unit, and a recording material having a discharge roller that is positioned downstream of the recording unit and discharges the recording material A recording device comprising a discharge device,
The recording apparatus according to any one of claims 1 to 4, wherein the recording material discharge apparatus is the recording apparatus.   6. The control unit according to claim 5, further comprising a control unit that controls each operation of the recording material conveyance device, the recording unit, and the recording material discharge device, and the control unit conveys the recording material when performing recording on one recording material. An ink jet amount increase / decrease data in the direction is also sent, and the load is changed according to the increase / decrease tendency of the increase / decrease data. A liquid ejecting unit, a liquid ejecting material transport device having a transport roller that transports the liquid ejecting material toward the liquid ejecting unit, and a discharge that is located downstream of the liquid ejecting unit and discharges the liquid ejecting material A liquid ejecting apparatus including a liquid ejecting material discharging apparatus having a roller,
The liquid ejecting material discharge device is driven by rotating the discharge roller in contact with a non-injecting surface of the liquid ejecting material and applying a feeding force to the ejecting surface of the liquid ejecting material with a predetermined load. A liquid ejecting apparatus comprising a pair of a discharge driven roller and a load changing unit configured to vary the load of the discharge driven roller according to a liquid discharge amount.

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