JP3690178B2 - RECORDING DEVICE, RECORDING BODY CONVEYING / DEPOSITING DEVICE - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  This invention, A recording apparatus in which an image or the like is recorded and formed on a sheet-like recording body, and a recording body that has been subjected to recording processing can be discharged and stacked and held, a recording body conveyance and deposition apparatus for conveying and depositing the recording body Transport deposition methodAbout.
[0002]
[Prior art]
Generally, a recording apparatus such as an ink jet printer, a facsimile machine, or a copying machine is used as a recording apparatus that performs recording on a recording medium with liquid ink.
[0003]
Some of such recording apparatuses are configured to discharge a recording medium to an output recording medium stacking section attached to the recording apparatus main body after recording on the recording medium with liquid ink. In the output recording material stacking section of this recording apparatus, the recording materials sequentially discharged are stacked and stocked.
[0004]
In the recording apparatus as described above, when the operation of discharging the second recording body immediately after the first recording body is discharged from the recording apparatus main body and placed on the output recording body stacking section, the second recording body is performed. The leading end of the recording medium hangs down and moves while rubbing on the recording surface of the first recording body, and is stacked on the first recording body. At this time, if the ink on the recording surface of the first recording body is not dry, the tip of the second recording body that is in sliding contact with the first recording body is pushed so as to sweep the liquid ink on the recording surface of the first recording body. The image may be spread out to stain the image, or the back surface of the second recording member placed on the recording surface of the first recording member may be stained with ink.
[0005]
Therefore, conventionally, a means exemplified in FIG. 7 disclosed in Japanese Patent Laid-Open No. 7-257800 has been proposed in order to prevent the ink stain on the recording material as described above.
[0006]
In the recording apparatus shown in FIG. 7, liquid droplets of liquid ink are ejected by a recording unit 16 of an ink jet method onto a recording sheet 14 as a recording medium fed from a paper feeding unit onto a conveying roller 12 inside the apparatus main body 10. Recording is performed by adhering. The recording paper 14 recorded with the liquid ink is rotated by rotating the paper discharge roller 18 while being sandwiched between the paper discharge roller 18 disposed on the downstream side of the transport path of the transport roller 12 and the opposing roller 20. The sheets are discharged one by one in the horizontal direction and sequentially stacked on a paper discharge unit 22 provided outside the apparatus main body 10.
[0007]
In this recording apparatus, in order to prevent ink stains on the recording medium, wind is blown from the front end of the air blowing port 26 toward the downstream side in the conveying direction of the recording paper 14 from the front end of the air blowing port 26, and blown horizontally from the conveying roller 12. The lower surface of the recording paper 14 to be sent is blown to lift the tip of the recording paper 14 being discharged, and rubbed on the recording surface of the recording paper 14 stocked in the paper discharge unit 22 with liquid ink. Measures are taken to prevent this.
[0008]
Conventionally, another means illustrated in FIG. 8 disclosed in Japanese Patent Laid-Open No. 1-145153 has been proposed in order to prevent ink stains on the recording medium. FIG. 8 shows a cross section in a direction orthogonal to the recording paper conveyance direction in a paper discharge unit provided outside the recording apparatus main body.
[0009]
In the means shown in FIG. 8, a pair of rail members 32 (wings) are mounted on both sides of the paper discharge unit 28. Each of the pair of rail members 32 is mounted so as to be rotatable between a standing position perpendicular to the floor member 34 and a guide holding position inclined inward as shown in FIG.
[0010]
When the recording paper 36 recorded by the apparatus main body is sent to the paper discharge unit 28 with the pair of rail members 32 opened to the guide holding position, the recording paper 36 is supported on both sides by the pair of rail members 32 and the floor. It is held in a state where it is lifted onto the previously output recording paper 36 placed on the member 34.
[0011]
In this state, it waits for a predetermined time until the ink of the recording paper 36 output previously is dried, and after a predetermined time has passed, the pair of rail members 32 are rotated to the standing position. Then, since the pair of rail members 32 are detached from the recording paper 36, the recording paper 36 that has lost its support falls on the previously outputted recording paper 36 and is stocked.
[0012]
In this way, the leading edge of the succeeding recording paper 36 is spread so as to sweep the liquid ink on the recording surface of the recording paper 36 that has been output first, thereby causing ink stains that stain the image, or output earlier. In addition, ink is prevented from being stained on the back surface of the succeeding recording paper 36 on the recording surface of the recording paper 36.
[0013]
[Problems to be solved by the invention]
In the conventional means presented in the above-mentioned Japanese Patent Application Laid-Open No. 7-257800, a large amount of ink is applied to the recording paper 14 when the size of the recording paper 14 increases and its own weight increases, or for recording by high density printing. When the weight of the recording paper 14 increases due to adhesion, only the wind is blown from the pump 24 to the vicinity of the discharge roller of the recording paper 14 through the air outlet 26, so that the leading edge of the recording paper 14 during the discharging operation hangs down. There is a risk that the recording surface of the previously discharged recording paper 14 will be soiled. Further, in this conventional means, it is necessary to install a dedicated pump or the like that blows air to lift the recording paper 14, which increases the number of parts and the structure, resulting in an increased product price.
[0014]
Further, in this conventional means, the wind blown from the pump 24 to the recording paper 14 being discharged through the air outlet 26 is blown in order to prevent the leading edge of the recording paper 14 being discharged from hanging down. Therefore, it is not intended to directly and evenly dry the liquid ink on the recording surface of the previously discharged recording paper 14.
[0015]
Therefore, when high-density printing is performed on the recording paper 14, the ink on the recording surface of the discharged recording paper 14 is not promoted so as to be thoroughly dried, so that the recording paper 14 discharged later is discharged. At the time of falling on the recording paper 14, ink stains on the recording surface of the discharged recording paper 14 and back surface contamination of the recording paper 14 discharged later may occur, and there is a risk of smearing the image of each recording paper 14. .
[0016]
In addition, when high density printing is performed on the recording paper 36 by the other conventional means exemplified in FIG. 8 disclosed in Japanese Patent Laid-Open No. 1-145153, the ink on the recording surface of the discharged recording paper 36 is used. Since there is no means for blowing air so as to completely dry the recording medium 36, the ink on the recording surface of the discharged recording paper 36 gets wet when the discharged recording paper 36 falls onto the discharged recording paper 36 later. If this happens, ink stains and backside stains of the recording paper 14 discharged later may occur, and the images on the recording papers 36 may become dirty.
[0017]
  In consideration of the above fact, the present invention can prevent the recorded image or the back surface of the recording body from being stained with ink,Simple and inexpensive recording apparatus, recording medium transport and deposition apparatus, and recording body transport and deposition methodIt aims at providing newly.
[0018]
[Means for Solving the Problems]
  The recording apparatus according to claim 1 of the present invention isRecording means for recording an image on a recording medium;
In a recording apparatus having a discharging means for discharging a recorded recording medium and a stacking means for stacking and holding the discharged recording medium, the recording medium discharged by the discharging means from both sides in the discharging direction of the recording medium. An applying means for blowing air from below to above, an air blowing means for blowing air from above on both sides in the discharge direction of the recording medium to the surface of the recording medium loaded and held on the loading means, and the recording medium discharged Switching automatically to supply wind to the applying means when discharged to the loading means by the means, and switching to automatically supply wind to the blowing means when the recording medium is discharged from the discharging means to the loading means Means.
[0019]
  By configuring as aboveIn the recording apparatus, when the recording body recorded by the recording means is sent out to the stacking means by the discharging means, the applying means floats the recording body by blowing the wind, and the tip of the recording body being discharged hangs down and is discharged. The switching means performs a series of operations in which the recording body is transported without rubbing, and then the recording body is moved from the discharging means to the stacking means, and then air is blown against the recording surface of the recording body by the blowing means to accelerate drying. Can be switched continuously and executed continuously.
[0020]
  According to claim 2 of the present inventionThe recording medium transporting / depositing apparatus is configured to discharge the recorded recording medium, to stack and hold the discharged recording medium, and to float the recording medium discharged to the stacking means by the discharging means. The first air blowing means for blowing air from below, and the air flow rates of the second air blowing means and the first air blowing means for blowing air from substantially above so as to dry the surface of the recording medium loaded and held on the loading means. And control means for controlling.
[0021]
  By configuring as described above,In the recording medium transport and deposition apparatus, when the recording body is sent out to the stacking means by the discharging means, the applying means blows the recording body against the air, and the tip of the recording body being discharged hangs down on the discharged recording body. Then, the recording medium is transported without being rubbed, and then the recording body is transferred from the discharging means to the stacking means, and then the blower can apply air to the recording surface of the recording body to accelerate drying.
[0022]
  The invention according to claim 33. The recording medium transporting and depositing apparatus according to claim 2, further comprising a detecting unit that detects that the recording body is discharged to the discharging unit, wherein the control unit is configured to detect the first blowing unit according to the detection signal of the detecting unit. It is characterized by reducing the air volume.
[0023]
  The invention according to claim 44. A recording medium carrying and depositing apparatus according to claim 2 or claim 3.InThe control means controls the air volume of the second air blowing means to increase the air volume of the second air blowing means when the air volume of the first air blowing means is decreased.
[0024]
  The invention described in claim 55. The recording medium transport and deposition apparatus according to claim 2, wherein the first air blowing unit is disposed along one side in a discharge direction of the recording body and has a first hollow portion therein. A first member having a blower part connected to the hollow part at a part of the surface, and a second hollow part disposed along the side facing the first member and having a hollow part at a part of the surface And a second member having a blower connected to the first and second members, wherein the first member and the second member are configured to be variable in the width direction of the recording medium.
[0025]
  The invention described in claim 66. The recording medium transporting and depositing apparatus according to claim 5, wherein the first member includes a first connection portion having a hollow portion extending toward the second member in the width direction of the recording body and communicating with the first hollow portion. And the second member has a second connecting portion having a hollow portion that extends toward the first member in the width direction of the recording body and communicates with the second hollow portion inside, and the first member and the second member Is characterized in that the first connecting portion and the second connecting portion are connected in a variable manner in the width direction of the recording body while the hollow portions are connected.
[0026]
  By configuring as described above,The distance between the first member and the second member can be adjusted in the width direction of the recording medium so that air can be blown from the air supply port that is moved and adjusted near both sides of the recording medium in the width direction.
[0027]
Therefore, the recording medium is conveyed to the discharge completion position of the stacking means in a state where it floats by receiving an average lift along both sides in the discharge direction.
[0028]
Subsequently to this, the surface of the recording body stacked and held on the stacking means is blown from the top to the bottom by the first member and the second member that are close to both sides in the discharge direction of the recording body. Since the wind spreads over the entire recording surface, drying of the ink can be promoted throughout. Therefore, even if the recording body subjected to the next recording process is placed on the recording surface of the discharged recording medium, the recording surface contamination of the discharged recording medium and the back surface contamination of the discharging recording medium are discharged. Can be avoided.
[0029]
  Claim 7The recording apparatus includes a recording unit that records an image on a recording medium, and the recording medium conveyance deposition apparatus according to any one of claims 2 to 6.
[0030]
  According to claim 8 of the present inventionThe recording medium transporting and depositing method includes a step of discharging the recorded recording body to the stacking means for stacking and holding the recording body, and a first method of blowing air from below substantially so as to float the recording body discharged to the stacking means. A step of blowing air, a step of reducing the air volume of the first air blow to load the recording medium on the stacking means, and a surface substantially above the recording body so as to dry the surface of the recording medium loaded on the stacking means. And a step of performing a second air blowing for blowing air from.
[0031]
  Mentioned aboveAccording to the recording medium transporting and accumulating method, in the step of performing the first air blowing, the wind is blown from substantially below the recording medium in the operation of discharging the recording medium to the stacking means for stacking and holding the recording medium. Therefore, the recording material is conveyed to the discharge completion position of the stacking means in a state of being lifted by receiving lift. Next, in the step of loading the recording medium on the loading means, the air volume in the step of performing the first air blowing is reduced, and the recording medium is dropped by its own weight except for the lifting force on the recording medium, and loaded on the loading means. Next, in the step of performing the second air blowing, the recording surface of the recording medium can be dried by blowing air from substantially above the recording body on the surface of the recording medium loaded on the loading means. it can.
[0032]
DETAILED DESCRIPTION OF THE INVENTION
  Recording apparatus of the present invention, Recording medium conveyance deposition apparatus and recording medium conveyance deposition methodAn ink jet printer according to this embodiment is shown in FIGS. As shown in FIG. 1, the main part of the entire inkjet printer is mainly provided with a recording medium transport unit 52, a printing unit 54, and a discharge unit 56.
[0033]
In this recording medium conveying section 52, an upstream conveying section 62 is arranged on the upstream side in the conveying path of a sheet-like recording medium 60 such as recording paper, and a downstream conveying section 64 is arranged on the downstream side thereof, and between them. A platen 66 is disposed.
[0034]
The upstream conveyance unit 62 includes an upstream conveyance roll 68 and an upstream pressing roll 70 that is in rolling contact with the upstream conveyance roll 68. The upstream transport unit 62 receives the recording bodies 60 fed one by one from a recording body supply unit (not shown) disposed in the apparatus main body 50, and is sandwiched between the upstream transport roll 68 and the upstream pressing roll 70. By rotating the upstream conveying roll 68 in this state, the recording body 60 is sent to the downstream conveying section 64 through the platen 66.
[0035]
The downstream transport unit 64 includes a downstream transport roll 72 and a downstream pressing roll 74 that is in rolling contact with the downstream transport roll 72. The downstream transport unit 64 sandwiches the leading end portion of the recording body 60 sent out from the upstream transport unit 62 between the downstream transport roll 72 and the downstream pressing roll 74 and rotates the downstream transport roll 72 to discharge the recording body 60. It is comprised so that it may discharge to the part 56.
[0036]
Further, the downstream transport unit 64 is connected to the upstream transport unit 62 and the downstream transport unit during a period from the start of the feeding operation with the leading end of the recording body 60 interposed therebetween until the rear end of the recording body 60 leaves the upstream transport unit 62. The recording body 60 is transported with tension from the transport unit 64 so as not to be loosened.
[0037]
Further, the platen 66 arranged on the conveyance path from the upstream conveyance unit 62 to the downstream conveyance unit 64 is small so that the recording body 60 can be held on a flat surface when printing on the recording body 60 by the printing unit 54. A vacuum fan 78 is arranged in a duct 80 surrounding a lower portion of a flat plate 76 having a large number of holes.
[0038]
The platen 66 drives the vacuum fan 78 to make the inside of the duct 80 have a negative pressure, and exhausts the air entering the duct 80 through a small hole in the flat plate 76 to the outside. As a result, when the recording body 60 closes each small hole when the recording body 60 slides on the surface of the flat plate 76, the inside of the duct 80 has a negative pressure. Therefore, the recording body 60 is adsorbed by each small hole. Then, the sheet is conveyed to the downstream side while being stretched so as to stick to the plane of the platen 66.
[0039]
The printing unit 54 arranged above the platen 66 arranges a scan shaft 82 along a main scanning direction (in the direction perpendicular to the paper surface in FIG. 1 from the front) orthogonal to the conveyance direction of the recording body 60. An ink jet type ink head 84 guided by a shaft 82 and reciprocated in the main scanning direction is mounted.
[0040]
The ink head 84 performs recording by causing fine droplets of liquid ink to fly and adhere to the smooth recording surface of the recording body 60 while reciprocating in the main scanning direction.
[0041]
As shown in FIGS. 1 and 3, the discharge unit 56 includes a discharge recording body stacking section 86 that stacks and stores the recorded recording bodies 60, and an air supply unit 88 disposed thereon. The discharged recording material stacking unit 86 is configured to be able to stock by stacking a large number of recording materials 60 by extending a rectangular plywood from the downstream conveying portion 64 toward the downstream side of the recording material 60 in the conveying direction.
[0042]
As shown in FIGS. 2 and 3, the air supply means 88 has a substantially inverted U shape as a whole with the first duct member 90 on the left side as viewed in the figure and the second duct member 92 on the right side as viewed in the figure. It is assembled and configured as follows.
[0043]
The first duct member 90 is composed of an air supply portion 96 formed of a hollow and quadrangular prism-shaped member, and a sliding connection portion 94 formed by bending one end portion thereof at a right angle. The end of the sliding connection portion 94 is formed as an opening so that the hollow interior is opened.
[0044]
Further, the second duct member 92 has an air supply part 98 formed of a hollow and quadrangular columnar member. Further, one end portion of the air supply portion 98 is bent at a right angle, and the end portion is opened so that the hollow interior is opened, and the inner shape of the hollow interior is formed to be slightly larger than the outer shape of the sliding connection portion 94. The sliding connection portion 100 is provided.
[0045]
Then, the sliding connection portion 94 of the first duct member 90 is inserted into the hollow interior of the sliding connection portion 100 of the second duct member 92 so as to be slidable while keeping airtightness, and is substantially inverted U-shaped as a whole. The air supply means 88 is configured.
[0046]
The air supply means 88 configured as described above slides the sliding connection portion 94 with respect to the sliding connection portion 100 and moves the first duct member 90 to the second duct member 92 side to thereby record the recording body 60. The space between the air supply unit 96 and the air supply unit 98 can be adjusted to extend or contract in parallel. Of course, both the first duct member 90 and the second duct member 92 may be configured to be movable and adjustable.
[0047]
As shown in FIGS. 1, 5 and 6, the first duct member 90 and the second duct member 92 of the air supply means 88 are each partitioned by a partition 106, and the upper air flow path in the drawing is shown. A space is formed between 108 and the lower drying air passage 110 in the figure. In addition, levitation air supply ports 102 are formed along the levitation air passages 108 on the side surfaces of the air supply portions 96 and 98 that face each other, and the air supply ports 102 are used for drying along the respective air blast passages 110. An air supply port 104 is formed.
[0048]
As shown in FIGS. 3 and 4, in the levitation air supply port 102, the side portions corresponding to the levitation air passages 108 of the respective air supply portions 96, 98 are cut into a long and substantially inverted U shape, and the rectangular long plate A blower guide 120 is provided that guides the bent piece to be bent at a predetermined angle so as to send air toward the back side of the recording body 60 positioned in the air above the discharge recording body stacking portion 86. At the same time, an opening opened in the side surface where the air blowing guide 120 is formed serves as an air outlet 122.
[0049]
In the same manner as described above, the drying air supply port 104 also has a rectangular long plate-like piece formed by cutting a side surface corresponding to the drying air passage 110 of each of the air supply units 96 and 98 into an elongated path U shape. A blower guide 124 is provided that is bent at a predetermined angle and guides the wind directly toward the recording surface of the recording body 60 placed on the discharged recording body stacking portion 86. At the same time, an opening opened in the side surface where the air blowing guide 124 is formed is used as an air outlet 126.
[0050]
As shown in FIGS. 1 and 2, an exhaust pipe 128 connected to the exhaust port of the vacuum fan 78 is connected to the air supply means 88, and the exhaust of the vacuum fan 78 is sent into the air supply means 88 through the exhaust pipe 128. It is configured to be noticed. In addition, when utilizing the exhaust of the vacuum fan 78 in this way, the number of parts can be reduced and the configuration can be simplified as compared with a configuration in which a blower is separately provided.
[0051]
As shown in FIGS. 1, 2, 5, and 6, the connection portion between the air supply means 88 and the exhaust pipe 128 is switched to send air to either the floating air passage 108 or the drying air passage 110. Switching means 130 is attached. The switching means 130 is configured by attaching a switching valve 134 to a fixed member 132 arranged at a predetermined portion of the partition 106 and attaching an adjustment spring 136 for automatically controlling the operation of the switching valve 134. Yes.
[0052]
This switching valve 134 is a flat plate having a planar shape that can open and close both the air passage that leads from the exhaust pipe 128 to the levitation air passage 108 and the air passage that leads from the exhaust pipe 128 to the air passage 110 for drying. It is formed by bending it into an approximate letter shape.
[0053]
An adjustment spring 136, which is a tension coil spring, is installed between the free end of the switching valve 134 and a predetermined location on the inner wall of the exhaust pipe 128, and the switching valve 134 is lifted as shown in FIG. It is urged to close the air passage leading to.
[0054]
As shown in FIG. 1, it is detected whether or not the recording body 60 is present at a position immediately before the downstream transport section 64 downstream of the platen 66 in the recording body transport section 52 of the apparatus main body 50 in the recording body transport direction. A recording medium detection sensor 112 is disposed. This recording medium detection sensor 112 is connected to a control unit (not shown) provided in the apparatus main body 50, and indicates that the recording medium 60 is located immediately above the recording medium detection sensor 112 on the recording medium transport unit 52. It detects and sends the detection signal to a control part.
[0055]
The control unit of the apparatus main body 50 sends a control signal to the vacuum fan 78 to control the amount of air exhausted by the vacuum fan 78 and blown to the exhaust pipe 128. In the present embodiment, the air volume is adjusted by controlling the voltage applied to the vacuum fan 78. In addition, while the recording medium detection sensor 112 detects the recording medium 60, the control unit increases the air volume by increasing the voltage applied to the vacuum fan 78, and the recording medium detection sensor 112 detects the recording medium 60. When not, control is performed to reduce the air volume by lowering the voltage applied to the vacuum fan 78.
[0056]
Further, the control unit is configured to perform predetermined control such as operation control of the printing unit 54 and operation control of the upstream transport roll 68 and the downstream transport roll 72.
[0057]
Next, the operation and control operation of the recording apparatus according to the present embodiment configured as described above will be described.
[0058]
When recording on the recording body 60 by the recording apparatus, a user operates an operation button (not shown) of the apparatus body 50 to send a recording operation signal to a control unit (not shown). Then, the control unit sends a recording body supply unit (not shown) to send the recording body 60 into the recording body transporting section 52 at regular intervals. In the control unit, the upstream conveyance roll 68 of the upstream conveyance unit 62 of the recording material conveyance unit 52 is rotationally driven to send the recording material 60 onto the platen 66.
[0059]
At this time, the control unit drives the vacuum fan 78 and sends the recording body 60 to the downstream transport section 64 while sucking the recording body 60 onto the flat plate 76 and holding it in a flat shape. In this way, the recording material transport unit 52 is sandwiched between the front end side of the recording material 60 by the downstream transport unit 64, the rear end side is sandwiched by the upstream transport unit 62, and the intermediate part is held flat by the platen 66. In this state, it is sent to the discharge unit 56.
[0060]
Then, the control unit sends a control signal to the printing unit 54 to drive the ink head 84 to eject fine droplets of ink while sliding in the main scanning direction about the scan shaft 82, and is sent onto the platen 66. An image is formed on the surface of the recorded body 60.
[0061]
Next, the control and operation when the recording medium 60 on which an image has been formed as described above is discharged to the discharge unit 56 and stocked will be described.
[0062]
When the control unit detects that the recording body 60 is passing through the recording body detection sensor 112 of the recording body transporting section 52, the control unit sends a control signal (increases the applied voltage by a certain amount) to the vacuum fan 78 so that the vacuum fan 78 Switch to operate with a large air flow.
[0063]
As a result, the amount of air sent from the vacuum fan 78 to the drying air passage 110 of the air supply means 88 through the exhaust pipe 128 increases. Then, when the large amount of air flowing through the exhaust pipe 128 is turned at the bent end of the switching valve 134, the switching valve 134 is rotated in the direction of arrow A in FIG. 5 against the urging force of the adjustment spring 136. Transition to the state of FIG.
[0064]
In the state of FIG. 6, a large amount of wind sent from the exhaust pipe 128 is guided into the levitation air passage 108. As shown in FIGS. 1 and 2, a large amount of air is blown out from the elongated opening of the air blowing port 122 through the air feeding portions 96 and 98 from the sliding connection portions 94 and 100 and guided by the air blowing guide 120, respectively. Then, it is applied to the recording body 60 delivered to a position above the predetermined height of the discharged recording body stacking portion 86.
[0065]
That is, air is blown from the lower sides of the recording medium 60 on both sides in the conveying direction to blow the air to the entire lower surface of the recording body 60 during the paper discharge operation, and the tip of the recording body 60 during the paper discharge operation is discharged. It is prevented from falling on the surface of the recorded stock 60 that has already been stocked.
[0066]
Therefore, even when the length of the portion on the front end side of the recording body 60 discharged to the discharge portion 56 is increased, the wind is blown from the floating air supply opening 102 that is long open along the traveling direction of the recording body 60. Therefore, the portion on the leading end side of the recording body 60 extending from the downstream conveyance unit 64 is held in a state of floating in the air.
[0067]
As described above, when the recording body 60 is sent to the discharge section 56 by the rotation of the downstream transport section 64, the recording body detection sensor 112 records when the rear end of the recording body 60 passes the recording body detection sensor 112. A signal when the body 60 is no longer detected is sent to the control unit. Then, the control unit sends a control signal (lowering the applied voltage to the voltage during normal operation) to the vacuum fan 78 to switch the vacuum fan 78 so as to blow a normal small air volume.
[0068]
As a result, the amount of air sent from the vacuum fan 78 to the air supply means 88 through the exhaust pipe 128 is reduced to a normal amount. Then, the urging force of the adjustment spring 136 wins over the normal air volume flowing through the exhaust pipe 128 and the switching valve 134 is rotated in the direction opposite to the arrow A in FIG.
[0069]
When the state is switched to the state of FIG. 5, the normal amount of air sent from the exhaust pipe 128 is guided into the drying air passage 110 and, as shown in FIGS. 1 and 4, from the sliding connection portions 94 and 100, respectively. Wind is blown out from the elongated opening of the air blowing port 126 through the air feeding portions 96 and 98, and this wind is guided by the air blowing guide 124 and blown to the upper surface side of the discharge recording material stacking portion 86.
[0070]
Since air is not blown from the floating air supply port 102 to the recording body 60 that is about to be discharged to the discharge unit 56 at the time when switching is made to blow air from the drying air supply port 104 in this way, the discharge operation is performed. The recording body 60 close to completion loses buoyancy. Therefore, immediately after this, the recording body 60 discharged onto the discharge recording body stacking portion 86 so as to be detached from the downstream transport portion 64 falls onto the discharge recording body stacking portion 86 by its own weight.
[0071]
Further, the recording surface of the discharged recording medium 60 which is discharged and stacked on the discharge recording material stacking portion 86 as described above is uniformly distributed from the drying air supply port 104 to the entire recording surface. Is applied. As a result, the drying of the ink on the recording surface of the recording body 60 is promoted, and the recording surface of the stacked discharged recording body 60 and the next back surface of the discharged recording body 60 are prevented from becoming dirty.
[0072]
The air supply state from the drying air supply port 104 continues until it is detected that the next recording body 60 is passing the recording body detection sensor 112. Therefore, during the standby of the normal apparatus main body 50, the drying of the ink on the recording surface of the discharged recording body 60 that is supplied from the drying air supply port 104 and discharged to the discharged recording body stacking portion 86 is promoted. It becomes a state to do.
[0073]
As described above, in the recording apparatus according to the present embodiment, the blower output of the vacuum fan 78 is switched and controlled depending on whether or not the recording body 60 during the recording process is detected by the recording body detection sensor 112, and related to this. Then, the switching means 130 automatically switches the wind to the floating air passage 108 side or the drying air passage 110 side. Accordingly, the operation of discharging the recorded recording body 60 while floating in the air to the discharge unit 56 and the drying operation of the recording surface of the recording body 60 stocked on the discharge recording body stacking unit 86 are appropriately switched. Can be operated continuously.
[0074]
Note that in the recording apparatus of the present embodiment, the exhaust of the vacuum fan 78 installed for so-called vacuum transport on the platen 66 of the recording material transport section 52 is being discharged by the air feeding means 88 of the discharge section 56. The apparatus main body 50 such as an electric circuit board (not shown) installed inside the apparatus main body 50 is configured to be used for air supply for floating the body 60 and for drying ink of the recording medium 60 stocked in the discharge unit 56. You may comprise so that the exhaust of the cooling fan for cooling the inside may be utilized. Furthermore, a dedicated blower for supplying air to the air supply means 88 may be installed in the apparatus main body 50.
[0075]
【The invention's effect】
  According to the present invention, a recording apparatus for recording on a recording medium, Recording medium conveyance deposition apparatus and recording medium conveyance deposition methodThe recording medium on the lower surface side of the recording medium being ejectedUnderSince the recording medium being discharged is lifted by applying an upward force from one side, it is possible to prevent the leading end of the recording medium being discharged from touching and smearing the discharged recording medium. Alternatively, the drying of the ink can be promoted by blowing air over the entire recording surface of the discharged recording medium. Therefore, even if the recording body subjected to the next recording process is placed on the recording surface of the discharged recording medium, the recording surface contamination of the discharged recording medium and the back surface contamination of the discharging recording medium are discharged. There is an effect that can be avoided.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a main part of an apparatus illustrating a recording apparatus according to an embodiment of the invention.
FIG. 2 is a schematic configuration diagram of a main part extracted and shown in a discharge portion of the recording apparatus according to the embodiment of the present invention.
FIG. 3 is an overall schematic perspective view showing a state of the recording apparatus according to the embodiment of the present invention as viewed from the direction of the discharge unit.
FIG. 4 is a main part perspective view showing a part of the air feeding means of the recording apparatus according to the embodiment of the present invention.
FIG. 5 is a schematic configuration diagram of a main part showing, in section, a portion where the switching unit of the air feeding unit is switched to the drying air passage in the recording apparatus according to the embodiment of the present invention.
FIG. 6 is a schematic configuration diagram of a main part showing, in section, a portion where the switching means of the air feeding means in the recording apparatus according to the embodiment of the present invention is switched to the levitation air passage.
FIG. 7 is a schematic configuration diagram of a main part of the apparatus illustrating a paper discharge unit of a conventional recording apparatus.
FIG. 8 is a longitudinal sectional view of a paper discharge device portion illustrating another paper discharge means of a conventional recording apparatus.
[Explanation of symbols]
50 Main unit
52 Recorder Conveying Unit (Discharging Unit)
54 Printing section (recording means)
56 Discharge unit (loading means)
60 records
62 Upstream transfer section
64 Downstream transport section
66 Platen
78 Vacuum fan (applying means) (air blowing means)
86 Discharged recording material stacking section (loading means)
88 Air supply means (applying means) (air blowing means)
102 Air outlet for levitation (applying means)
104 Air supply port for drying (air blowing means)
108 Floating air passage (applying means)
110 Air passage for drying (air blowing means)
112 Recorded body detection sensor
120 Blower guide (applying means)
122 Air outlet (applying means)
124 Blower guide (Blower unit)
126 Air outlet (air blowing means)
128 Exhaust pipe (applying means) (air blowing means)
130 switching means
132 Fixing member (switching means)
134 Switching valve (switching means)
136 Adjustment spring (switching means)

Claims (8)

  Recording means for recording an image on a recording medium;
  Discharging means for discharging the recorded body,
  In a recording apparatus having a stacking means for stacking and holding the discharged recording body,
  An applying unit that blows air from below to above from both sides in the discharging direction of the recording body with respect to the recording body discharged by the discharging unit;
  A blowing means for blowing air from above to below from both sides in the discharge direction of the recording body on the surface of the recording body stacked and held on the loading means;
  When the recording body is discharged to the stacking means by the discharge means, the air supply is automatically switched to supply air to the applying means, and the air blower is discharged when the recording body is discharged from the discharge means to the stacking means. And a switching means for automatically switching so as to supply wind to the means.   Discharging means for discharging the recorded recording material;
  Stacking means for stacking and holding the discharged recording medium;
  First blowing means for blowing air from substantially below so as to float the recording medium discharged to the loading means by the discharging means;
  Second blowing means for blowing air from substantially above so as to dry the surface of the recording material loaded and held on the loading means;
  Control means for controlling the air volume of the first air blowing means;
  A recording medium transporting and depositing apparatus comprising:   Having detection means for detecting that the recording body is discharged to the discharge means;
  3. The recording medium conveying and depositing apparatus according to claim 2, wherein the control means reduces the air volume of the first air blowing means in accordance with a detection signal of the detection means.   The said control means controls the air volume of the said 2nd ventilation means, and when increasing the air volume of the said 1st ventilation means, it increases the air volume of the said 2nd ventilation means, It is characterized by the above-mentioned. 4. A recording medium conveying and depositing apparatus according to claim 2 or claim 3.   The first blower means is a first member that is disposed along one side in the discharge direction of the recording body, has a first hollow portion inside, and has a blower portion connected to the hollow portion at a part of the surface. When,
  A second member that is disposed along the side facing the first member and that has a second hollow portion therein and a blower portion that is connected to the hollow portion at a part of the surface;
  5. The recording medium conveyance and deposition apparatus according to claim 2, wherein the first member and the second member are configured to be variable in a width direction of the recording body. 6. .   The first member has a first connection portion having a hollow portion that extends toward the second member in the width direction of the recording body and communicates with the first hollow portion inside.
  The second member has a second connection portion that has a hollow portion that extends toward the first member in the width direction of the recording body and communicates with the second hollow portion inside.
The first member and the second member are variably connected in the width direction of the recording medium while a hollow portion is connected in the first connection portion and the second connection portion. Item 6. The recording material transport and deposition apparatus according to Item 5.   Recording means for recording an image on a recording medium;
  The recording material transport and deposition apparatus according to any one of claims 2 to 6,
  A recording apparatus comprising:   Discharging the recorded body on the loading means for loading and holding the recording body;
  Performing a first air blowing to blow wind from substantially below so as to float the recording medium discharged to the stacking means;
  A step of stacking the recording body on the stacking means by reducing an air volume of the first air blow, and a substantially upper portion of the recording body so as to dry a surface of the recording body stacked on the stacking means. A second air blowing step for blowing wind from
  A recording medium conveyance deposition method comprising:

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