JP2017087698A - Liquid discharge device, control method for the same, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid discharge device capable of improving quick-drying while preventing flapping of a recording medium by adjusting an air blowing angle.SOLUTION: A liquid discharge device conveys a recording medium to which liquid is discharged in one direction after discharging the liquid toward the recording medium. The liquid discharge device includes: air blowing means for blowing air toward the recording medium conveyed in the one direction; detection means for detecting an end orthogonal to the one direction of the recording medium conveyed in the one direction; and angle adjustment means 55 for adjusting the angle of air blown by the air blowing means toward the recording medium conveyed in the one direction. The angle adjustment means adjusts the angle of air blown toward the recording medium conveyed in the one direction by the air blowing means according to whether or not the end is on an upstream side of the detection means in the one direction or a downstream side.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an apparatus for ejecting liquid, a control method for an apparatus for ejecting liquid, and a program.

  In recent years, the expansion into the commercial printing area has expanded. Commercial printing is a field that targets printed materials used in the business activities of general companies and organizations. Commercial printing can be divided into advertising printing and business printing. Advertising prints are mainly printed items such as flyers, pamphlets, leaflets, posters, and POPs (Point Of Purchase), while commercial prints are mainly printed items such as catalogs, company guides, manuals, company newsletters, and rosters. It is.

  With the advance into the commercial printing area, high-speed printing has been demanded. As a technical problem associated with high-speed printing, for example, quick drying of ink in a printed matter can be cited.

  For example, when the ink is insufficiently dried, the following problems occur. For example, a phenomenon called blocking occurs in which ink is peeled off when printed materials are stacked. Further, when the printed material is conveyed, a phenomenon called picking occurs in which the ink adheres to the roller and loses color.

  In order to prevent such a problem, it is important to improve the quick drying property of the ink, and various drying methods are used to improve the quick drying property of the ink. Currently, the drying method mainly used includes drying using a hot plate, drying using warm air, drying using an IR (Infrared heater) heater, and the like.

  Patent Document 1 discloses a technique in which a blower is provided on the upstream side in the conveyance direction of a recording medium with respect to a conveyance unit that conveys the recording medium while sucking the recording medium to the conveyance surface in order to suppress flapping of the recording medium during blowing. Yes. And this blower blows in an oblique direction from the center of the recording medium toward the upstream side, and before the blow hits the recording medium, according to the width of the recording medium conveyed to the conveying means, The air blowing direction is adjusted so that the air blowing area width is narrower than the width of the recording medium.

  In many cases, warm air is used as a method for the drying treatment, and in order to perform high-speed drying with warm air, a strong drying power is required. In order to improve the drying power by the hot air, that is, to improve the quick drying property by the hot air, it is necessary to increase the speed of the hot air. However, when the wind speed is increased, there is a problem that the recording medium flutters when the recording medium is blown by the wind and damages the recording medium itself. That is, when the recording medium is conveyed using the conveying belt, there is a problem that the recording medium is beaten by the hot air hitting the conveying belt entering under the recording medium, and the recording medium flutters.

  In the technique described in Patent Document 1, the air is blown in an oblique direction with respect to the recording medium, and the blowing direction is adjusted so that the blowing area width is narrower than the width of the recording medium according to the width of the recording medium. However, the blowing direction is not changed according to the conveyance state of the recording medium. Therefore, the problem that the recording medium may flutter before and after the recording medium passes through the blower depending on the conveyance state of the recording medium has not been solved.

  Accordingly, the present invention has been made in view of the above-described problems of the prior art, and discharges a liquid capable of improving quick drying while preventing flapping of the recording medium by adjusting the air blowing angle. It is an object of the present invention to provide a device that performs the above-described process.

  In order to solve the above problems, an apparatus for ejecting a liquid according to the present invention is an apparatus for ejecting a liquid that transports the recording medium on which the liquid is ejected in one direction after ejecting the liquid toward the recording medium. A blowing means for sending air toward the recording medium conveyed in the one direction, a detecting means for detecting an end of the recording medium conveyed in the one direction perpendicular to the one direction, and the one Angle adjusting means for adjusting the angle of the wind sent out by the blowing means toward the recording medium conveyed in the direction, the angle adjusting means having the end portion of the detecting means in the one direction. The air blower adjusts the angle of the wind sent out toward the recording medium conveyed in the one direction depending on whether the air is on the upstream side or the downstream side.

  ADVANTAGE OF THE INVENTION According to this invention, the apparatus which discharges the liquid which can improve quick-drying property can be obtained, preventing flapping of a recording medium by adjusting a ventilation angle.

It is a figure explaining schematic structure of the device which discharges the liquid concerning this embodiment. It is a figure explaining an example of the hardware block of the apparatus which discharges the liquid which concerns on this embodiment. It is a figure explaining an example of the functional block of the apparatus which discharges the liquid which concerns on this embodiment. It is a figure explaining an example of the block which controls a ventilation part among the functional blocks of the apparatus which discharges the liquid which concerns on this embodiment. 3 is a diagram illustrating an angle of warm air sent from a blower unit before a paper end detection unit of a device for ejecting liquid according to the present embodiment detects a leading end portion of transfer paper P. FIG. 6 is a diagram illustrating an angle of hot air sent from a blower unit after a paper end detection unit of a device for ejecting liquid according to the present embodiment detects a rear end portion of a transfer paper P. FIG. It is a flowchart explaining operation | movement of the apparatus which discharges the liquid which concerns on this embodiment.

  Next, embodiments for carrying out the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified thru | or abbreviate | omitted suitably. Hereinafter, the present invention will be described, but the present invention is not limited to the embodiments described below.

  The apparatus for ejecting liquid according to the present invention relates to an apparatus for ejecting liquid that transports a recording medium on which the liquid is ejected in one direction after ejecting the liquid toward the recording medium. And the apparatus which discharges a liquid has a ventilation part which sends out wind toward the recording medium conveyed in the said one direction. In addition, the apparatus for ejecting liquid includes a detection unit that detects an end portion orthogonal to one direction of the recording medium conveyed in the one direction. Furthermore, the apparatus for discharging the liquid has an angle adjusting unit that adjusts the angle of the wind sent by the blower toward the recording medium conveyed in the one direction. Then, the angle adjusting unit sends the air blowing unit toward the recording medium conveyed in the one direction depending on whether the end of the recording medium is on the upstream side or the downstream side of the detecting unit in the one direction. The angle of the wind to be adjusted is adjusted. The features of the present invention will be described in detail with reference to the following drawings.

  First, a schematic configuration of an apparatus for ejecting liquid according to the present embodiment will be described. FIG. 1 is a diagram illustrating a schematic configuration of an apparatus for ejecting liquid according to the present embodiment.

  In FIG. 1, an ink jet recording apparatus 1 which is an example of an apparatus for discharging a liquid can perform full color image formation. The ink jet recording apparatus 1 performs an image forming process based on an image signal corresponding to image information received from the outside.

  The ink jet recording apparatus 1 performs image formation using any of ordinary paper generally used for copying and the like as well as an OHP (Overhead projector) sheet, cardboard, cardboard, cardboard, and envelopes. Is possible. The inkjet recording apparatus 1 is a single-sided image forming apparatus capable of forming an image on one side of a transfer paper P that is a sheet as a recording medium, but may be a double-sided image forming apparatus capable of forming an image on both sides of the transfer paper P. .

  The ink jet recording apparatus 1 ejects an ink of a color that can form an image corresponding to each color separated into yellow (Y), magenta (M), cyan (C), and black (K). An image forming unit 3 as an ink discharge member is provided. The image forming unit 3 includes inkjet heads 31Y, 31M, 31C, and 31K. The inkjet recording apparatus 1 has a tandem structure in which inkjet heads 31Y, 31M, 31C, and 31K are arranged in parallel in the horizontal direction.

  Inkjet heads 31Y, 31M, 31C, and 31K are located above the sheet conveying unit 2 formed of an endless belt 5 disposed at a substantially central portion of the main body of the inkjet recording apparatus 1, and on the outer peripheral surface of the belt 5. It is arrange | positioned in the position which opposes. Ink jet heads 31Y, 31M, 31C, and 31K are arranged in order from the upstream side in the left conveyance direction in FIG. 1 toward the downstream side in the right conveyance direction along the conveyance direction indicated by the arrow of transfer paper P. In the figure, Y, M, C, and K added after the numerals of the reference numerals indicate members for yellow, magenta, cyan, and black.

  The inkjet heads 31Y, 31M, 31C, and 31K are provided in the image forming unit 3 to form yellow (Y), magenta (M), cyan (C), and black (K) images, respectively. Each inkjet head 31Y, 31M, 31C, 31K is a full line having a length corresponding to the maximum width of the image forming area on the transfer paper P (the length in the direction perpendicular to the transport direction indicated by the arrow of the transfer paper P). The head of the mold. The inkjet heads 31Y, 31M, 31C, and 31K are fixedly installed on the image forming unit 3 so as to extend in a direction orthogonal to the conveyance direction indicated by the arrow of the transfer paper P.

  The paper transport unit 2 holds the transfer paper P on the outer peripheral surface of the belt 5 and transports the transfer paper P in the transport direction indicated by the arrows while facing the ink jet heads 31Y, 31M, 31C, and 31K. In this process, yellow, magenta, cyan, and black inks are sequentially ejected from the inkjet heads 31Y, 31M, 31C, and 31K, and an image is formed on the transfer paper P. A number of holes (not shown) are formed in the belt 5 of the paper transport unit 2 to suck and hold the transfer paper P, and the transfer paper P is sucked, sucked and transported.

  Ink ejection to the transfer paper P by the ink jet heads 31Y, 31M, 31C, and 31K is performed from the upstream side to the downstream side in the transport direction so that the image areas of each color of yellow, magenta, cyan, and black overlap the same position of the transfer paper P This is done at different timings.

  As shown in FIG. 1, the inkjet recording apparatus 1 includes an image forming unit 3 including inkjet heads 31 </ b> Y, 31 </ b> M, 31 </ b> C, and 31 </ b> K, and a belt 5. Further, the ink jet recording apparatus 1 includes a paper transport unit 2 as a paper transport unit that transports the transfer paper P in a state where the transfer paper P is sucked and held on the belt 5. Furthermore, the ink jet recording apparatus 1 includes a paper end detection unit 32 that detects the end of the transfer paper P, and a blower 4 that sends warm air to dry the ink transferred to the transfer paper P. Yes.

  Further, the ink jet recording apparatus 1 can stack a large number of transfer sheets P, and feeds only the uppermost transfer sheet P among the stacked transfer sheets P toward the sheet transport unit 2 (not shown). have. In addition, the inkjet recording apparatus 1 has a paper discharge tray (not shown) on which a large number of transfer papers P (images formed) that have been transported and formed by the paper transport unit 2 can be stacked.

  The inkjet recording apparatus 1 includes an inkjet head cleaning device (not shown) that cleans the inkjet heads 31Y, 31M, 31C, and 31B. Further, it has a CPU (Central Processing Unit), a memory, etc., which will be described later, for controlling the entire operation of the inkjet recording apparatus 1. Based on the position of the transfer paper P detected by the paper edge detection unit 32, the CPU adjusts the blowing angle of the warm air sent from the nozzle 6 of the blowing unit 4.

  As shown in FIG. 1, in addition to the belt 5, the paper transport unit 2 rotates a driving roller 22 that is a driving member around which the belt 5 is wound, a tension roller 21 that is a driven member, and a driving roller 22. And a motor as driving means (not shown) for driving.

  Next, an example of a hardware block of the apparatus for ejecting liquid according to the present embodiment will be described. FIG. 2 is a diagram illustrating an example of a hardware block of the apparatus for ejecting liquid according to the present embodiment.

  As shown in FIG. 2, an inkjet recording apparatus 1 which is an example of an apparatus for ejecting liquid according to the present embodiment has the same configuration as an information processing apparatus such as a server or a PC (Personal Computer). The inkjet recording apparatus 1 includes a CPU 201, a RAM (Random Access Memory) 202, a ROM (Read Only Memory) 203, an HDD (Hard Disk Drive) 204, and an I / F (interface) 205. These are connected via a bus 206. In addition, an LCD (Liquid Crystal Display) 207 and an operation unit 208 are connected to the I / F 205. Further, signals are transmitted to and received from the external device 209 connected to the inkjet recording apparatus 1 via the I / F 205.

  The CPU 201 is a calculation unit and controls the operation of the entire inkjet recording apparatus 1. The RAM 202 is a volatile storage medium capable of reading and writing information at high speed, and is used as a work area when the CPU 201 processes information. The ROM 203 is a read-only nonvolatile bright storage medium and stores firmware and the like. The HDD 204 is a nonvolatile storage medium that can read and write information, and stores an OS (Operating System), various control programs, application programs, and the like.

  The I / F 205 connects and controls the bus 206 and various hardware and networks. The LCD 207 is a visual user interface that is used by the user to check the state of the inkjet recording apparatus 1. The operation unit 208 is a user interface for a user such as a keyboard and a mouse to input information to the inkjet recording apparatus 1. The LCD 207 also serves as a user interface when the operation unit 208 has a touch panel configuration. The external device 209 is hardware for realizing functions unique to the inkjet recording apparatus 1, and is a print engine or the like that executes image formation on the transfer paper P.

  In such a hardware configuration, a program stored in a storage medium such as the ROM 203, the HDD 204, or an optical disk (not shown) is read into the RAM 202. A software function is configured by the CPU 201 performing an operation according to a program loaded in the RAM 202. A functional block that realizes the function of the inkjet recording apparatus 1 according to the present embodiment is configured by a combination of the software function and the hardware configured as described above.

  Next, an example of a functional block of the apparatus for ejecting liquid according to the present embodiment will be described. FIG. 3 is a diagram illustrating an example of functional blocks of the apparatus for ejecting liquid according to the present embodiment.

  As shown in FIG. 3, the inkjet recording apparatus 1 includes a controller 300, a display panel 41, a paper feed mechanism 42, a print engine 43, a paper discharge mechanism 44, an external device connection I / F 45, and a storage unit 46.

  The controller 300 includes a main control unit 301, an engine control unit 302, an image processing unit 303, an operation display control unit 304, and an input / output control unit 305. In FIG. 3, the electrical connection is indicated by solid arrows, and the flow of the transfer paper P is indicated by broken arrows.

  The display panel 41 is an output interface that visually displays the state of the inkjet recording apparatus 1. The display panel 41 is also an input interface (operation unit) when the user directly operates the ink jet recording apparatus 1 as a touch panel or inputs information to the ink jet recording apparatus 1. The external connection device I / F 45 is an interface for communicating with other devices via a network or an inter-device connection cable, and uses an Ethernet (registered trademark) or a USB (Universal Serial Bus) interface.

  The controller 300 is configured by a combination of software and hardware. Specifically, a control program such as firmware stored in a ROM 203, HDD 204, and a non-volatile recording medium such as an optical disk is loaded into a volatile memory such as the RAM 202. The controller 300 is configured by software functions configured according to the control of the CPU 201 and hardware such as an integrated circuit. The controller 300 functions as a control unit that controls the entire inkjet recording apparatus 1.

  The main control unit 301 plays a role of controlling each unit included in the controller 300 based on data or the like stored in advance in the storage unit 46, and controls each unit of the controller 300 based on data or the like stored in advance in the storage unit 46. Give instructions. The engine control unit 302 plays a role of controlling the print engine 43 or driving means for driving the print engine 43.

  The input / output control unit 305 inputs a signal or a command input via the external connection device I / F 45 to the main control unit 301. Further, the main control unit 301 controls the input / output control unit 305 to access other devices via the external connection device I / F 45.

  The image processing unit 303 generates drawing information based on the print information included in the input print job according to the control of the main control unit 301. The drawing information is information for drawing an image to be formed in the image forming operation by the print engine 43 as an image forming unit. The print information included in the print job is image information converted into a format that can be recognized by the inkjet recording apparatus 1 by a printer driver installed in an information processing apparatus such as a PC. The operation display control unit 304 displays information on the display panel 41 or notifies the main control unit 301 of information input via the display panel 41.

  In the inkjet recording apparatus 1, first, the input / output control unit 305 receives a print job via the external connection device I / F 45. The input / output control unit 305 transfers the received print job to the main control unit 301. When receiving the print job, the main control unit 301 controls the image processing unit 303 to generate drawing information based on the print information included in the print job.

  When drawing information is generated by the image processing unit 303, the engine control unit 302 executes image formation on the transfer paper P conveyed from the paper feed mechanism 42 based on the generated drawing information. That is, the print engine 43 functions as an image forming unit. The transfer paper P on which image formation has been performed by the print engine 43 is discharged out of the apparatus by a paper discharge mechanism 44.

  In the inkjet recording apparatus 1, the image forming unit 3 corresponding to the print engine 43 forms an image on the transfer paper P discharged from a paper feeding unit (not shown) corresponding to the paper feeding mechanism 42. Each unit except for the image forming unit 3 contacts the transfer paper P to be subjected to image formation along the internal conveyance path, and rotates and transfers from the upstream to the downstream of the conveyance path of the transfer paper P. A paper transport unit 2 constituting a transport path of the paper P is provided.

  The transport roller is composed of a drive roller 22 that is connected to a drive device (not shown) and rotationally drives itself along the transport speed, and a tension roller 21 that rotates in accordance with the transport direction of the transfer paper P. The transfer paper P is transported from the upstream to the downstream of the transport path by the rotation operation of the stretching roller 21. The tension roller 21 is driven and rotated by the tension applied to the tension roller 21 from the contact portion of the belt 5 contacting the surface of the driving roller 22.

  These units are driven and controlled by the engine control unit 302. When the conveyance operation is normally performed, the transfer sheet P moves from the upstream side to the downstream side of the conveyance path in the conveyance direction indicated by the arrow of the belt 5. Accordingly, the tension roller 21 also rotates.

  Next, an example of a block that controls the air blowing unit among the functional blocks of the apparatus for ejecting liquid according to the present embodiment will be described. FIG. 4 is a diagram illustrating an example of a block that controls the air blowing unit among the functional blocks of the apparatus for ejecting liquid according to the present embodiment.

  The blocks that control the air blowing unit 4 include a conveyance control unit 51, a paper edge detection unit 52, a measurement unit 53, a determination control unit 54, a storage unit 46, an angle adjustment unit 55, and a wind speed adjustment unit 56. Is composed of. The conveyance control unit 51, the sheet edge detection unit 52, and the measurement unit 53 are realized by the engine control unit 302 described with reference to FIG.

  Further, the determination control unit 54, the angle adjustment unit 55, and the wind speed adjustment unit 56 are realized by the main control unit 301 described with reference to FIG. The storage unit 46 is the same as the storage unit 46 described in FIG.

  The conveyance control unit 51 controls the conveyance state of the transfer paper P on the belt 5. The paper edge detection unit 52 detects the edge of the leading edge or the trailing edge that is orthogonal to the conveyance direction of the transfer paper P being conveyed. The measuring unit 53 calculates the distance between the transfer state of the transfer paper P obtained from the transfer control unit 51 and the position of the paper end detection unit 52 and the position of the leading or trailing end perpendicular to the transfer direction of the transfer paper P. It is to be measured.

  The determination control unit 54 stores the distance between the position of the sheet edge detection unit 52 obtained from the measurement unit 53 and the position of the leading edge or the trailing edge orthogonal to the conveyance direction of the transfer paper P in advance in the storage unit 46. The predetermined threshold is compared. Then, the angle adjusting unit 55 and the wind speed adjusting unit 56 are controlled based on the comparison result.

  The angle adjustment unit 55 adjusts the angle of the nozzle 6 of the blower unit 4 based on the control of the determination control unit 54. The wind speed adjusting unit 56 adjusts the wind speed of the warm air sent from the nozzle 6 of the air blowing unit 4 based on the control of the determination control unit 54.

  Next, the paper edge detection unit of the apparatus for ejecting liquid according to the present embodiment detects the angle of the hot air sent from the blower unit before detecting the leading edge of the transfer paper P, and the paper edge detection unit. However, the angle of the warm air sent from the blower after detecting the trailing edge of the transfer paper P will be described. FIG. 5 is a diagram for explaining the angle of the warm air sent from the blower unit before the paper edge detection unit of the apparatus for ejecting liquid according to the present embodiment detects the leading edge of the transfer paper P. FIG. 6 is a diagram for explaining the angle of the hot air sent from the blower unit after the paper end detection unit of the apparatus for ejecting liquid according to the present embodiment detects the rear end of the transfer paper P. is there.

  As shown in FIG. 5A, when the transfer paper P is transported on the belt 5 in the transport direction indicated by the arrow, before the leading edge of the transfer paper P passes the paper end detection section 32, the nozzle Control is performed so that the warm air sent from 6 is sent in the direction of the arrow WF, that is, in the same direction as the transfer direction of the transfer paper P. As shown in FIG. 5B, the distance between the leading edge of the transfer paper P and the paper edge detection unit 32 is a predetermined value (for example, a [mm] (a is an arbitrary value)) or more. If it is, warm air is sent out from the nozzle 6 at a predetermined wind speed (for example, P1). Thereafter, the transfer paper P is transported, and the distance between the leading edge of the transfer paper P and the paper edge detection unit 32 is close to a predetermined value (for example, a [mm] (a is an arbitrary value)) or less. In this case, the wind speed of the warm air sent from the nozzle 6 is set to a wind speed (for example, P2) higher than the predetermined wind speed.

  This is large from the nozzle 6 when the distance between the front end portion of the transfer paper P and the paper end detection portion 32 is more than a predetermined value (for example, a [mm] (a is an arbitrary value)). This is because if the warm air is sent out at the wind speed, if the transfer paper P is blown by the wind, fluttering occurs and the transfer paper P is damaged. When the distance between the leading edge of the transfer paper P and the paper edge detection unit 32 is close to a predetermined value (for example, a [mm] (a is an arbitrary value)) or less, the wind speed is increased. This is because the transfer paper P is pressed against the belt 5 so that the phenomenon that the transfer paper P is blown by wind does not occur.

  5A and 5B, the angle of the warm air sent from the nozzle 6 is described as being obliquely 135 ° with respect to a plane parallel to the transport direction indicated by the arrow, but is not necessarily limited. This angle need not be. In short, if the warm air sent out from the nozzle 6 is substantially in the same direction as the conveying direction indicated by the arrow, it can be set at an arbitrary angle.

  As shown in FIG. 6A, when the transfer paper P is transported on the belt 5 in the transport direction indicated by the arrow, after the leading edge of the transfer paper P passes through the paper edge detection unit 32, the nozzle Control is performed so that the warm air sent from 6 is sent in the direction of the arrow WR, that is, in the direction opposite to the conveyance direction of the transfer paper P. As shown in FIG. 6B, the distance between the rear end portion of the transfer paper P and the paper end detection portion 32 is equal to or less than a predetermined value (for example, a [mm] (a is an arbitrary value)). When the air is close to the nozzle, warm air is sent from the nozzle 6 at a predetermined wind speed (for example, P2). Thereafter, the transfer paper P is transported, and the distance between the trailing edge of the transfer paper P and the paper edge detection unit 32 is a predetermined value (for example, a [mm] (a is an arbitrary value)) or more. In this case, the wind speed of the warm air sent from the nozzle 6 is set to a wind speed (for example, P1) smaller than the predetermined wind speed.

  This is because when the distance between the rear end portion of the transfer paper P and the paper end detection portion 32 is close to a predetermined value (for example, a [mm] (a is an arbitrary value)) or less, the wind speed This is because the transfer paper P is pressed against the belt 5 even when the value is increased, so that the phenomenon that the transfer paper P is blown by the wind does not occur. When the distance between the rear end portion of the transfer paper P and the paper end detection portion 32 is more than a predetermined value (for example, a [mm] (a is an arbitrary value)), the distance from the nozzle 6 is large. This is because if the warm air is sent out at the wind speed, if the transfer paper P is blown by the wind, fluttering occurs and the transfer paper P is damaged.

  6 (a) and 6 (b), the angle of the hot air sent from the nozzle 6 is described as being 45 ° oblique to the plane parallel to the conveyance direction indicated by the arrow, but not necessarily. This angle need not be. In short, if the warm air sent from the nozzle 6 is in a direction substantially opposite to the conveying direction indicated by the arrow, it can be set to an arbitrary angle.

  Further, as the transfer sheet P is transported in the transport direction indicated by the arrow from FIG. 5 to FIG. 6, the angle of the warm air sent from the nozzle 6 is slanted from 135 ° to the direction parallel to the transport direction. In the operation of changing to 45 °, the nozzle 6 may be gradually rotated around the point C.

  Further, FIGS. 5 and 6 illustrate the case where one blower unit 4 is provided in the conveyance direction indicated by the arrow, but a plurality of blowers are provided in the same direction as the conveyance direction indicated by the arrow. The structure which provides the part 4 may be sufficient. In this case, among the plurality of air blowing units 4 provided in the same direction as the conveyance direction indicated by the arrows, the air blowing unit 4 that sends warm air first to the transfer paper P to be conveyed, and finally the hot air. You may make it the angle of the nozzle 6 shown in FIG. 5, FIG. 6 adjust with the ventilation part 4 to send out. The other air blowing section 4 may be configured to blow warm air from the nozzle 6 at an angle of 90 °, that is, directly above the transfer paper P.

  Next, the operation of the apparatus for ejecting liquid according to the present embodiment will be described. FIG. 7 is a flowchart for explaining the operation of the apparatus for ejecting liquid according to the present embodiment.

  In the process of step S701, it is determined whether or not the conveyance of the sheet (transfer sheet P) has been started. If it is determined that the sheet conveyance has not started (step S: 701: No), the process waits until the sheet conveyance is started. If it is determined that the conveyance of the sheet is started (step S701: Yes), it is determined whether or not the leading end of the sheet has passed through the sheet end detection unit 32 in the process of step S702. If it is determined that the leading edge of the sheet has passed through the sheet edge detection unit 32 (step S702: Yes), the process proceeds to step S703. If it is determined that the leading edge of the sheet does not pass through the sheet edge detection unit 32 (step S702: No), the process proceeds to step S704.

  In step S704, the process returns to step S701 without changing the angle of the nozzle 6. In the process of step S703, the angle of the nozzle 6 is changed. That is, as described with reference to FIG. 5, the angle of the nozzle 6 is moved in the same direction as the paper conveyance direction indicated by the arrow described with reference to FIG.

  In the process of step S705, it is determined whether or not the trailing edge of the sheet has passed the sheet edge detection unit 32. If it is determined that the trailing edge of the sheet has passed the sheet edge detection unit 32 (step S705: Yes), the process proceeds to step S706. If it is determined that the trailing edge of the sheet has not passed through the sheet edge detection unit 32 (step S705: No), the process proceeds to step S707.

  The process returns to step S705 without changing the angle of the nozzle 6 in the process of step S707. In the process of step S706, the angle of the nozzle 6 is changed. That is, as described with reference to FIG. 6, the angle of the nozzle 6 is moved in the direction opposite to the sheet conveyance direction indicated by the arrow described with reference to FIG.

  In the process of step S708, it is determined whether or not the conveyance of the sheet is completed. If it is determined that the conveyance of the sheet is not completed (step S708: No), the process returns to step S701. If it is determined that the conveyance of the sheet is completed (step S708: Yes), the process is terminated.

  Note that the operation flow of the apparatus for ejecting liquid according to the present embodiment shown in FIG. 7 can be executed by a program on a computer. That is, the CPU 201 constituting the inkjet recording apparatus 1 loads a program stored in the ROM 203 or the like. Then, each processing step of the program is performed sequentially.

  As described above, conventionally, the warm air is applied perpendicularly to the recording medium. In the present embodiment, the nozzle is set against the recording medium before the recording medium passes through the paper edge detection unit. Is directed in the same direction as the paper transport direction. That is, the angle is set so that the wind does not enter under the recording medium. In addition, after the recording medium passes through the sheet edge detection unit, the nozzle is directed in the direction opposite to the sheet conveying direction with respect to the recording medium. That is, the angle is set so that the wind does not enter under the recording medium.

  Thus, the phenomenon that the wind hits the recording medium and the wind enters under the recording medium is minimized, and fluttering of the recording medium is prevented. In short, the air blowing angle is varied in accordance with the position of the recording medium so that the wind does not enter under the recording medium, and fluttering of the recording medium is prevented.

  In the above-described embodiment, an example in which the present invention is applied to an ink jet recording apparatus has been described. However, the present invention is not limited to this, and the present invention can be widely applied to the entire apparatus that ejects liquid. Here, an apparatus for discharging liquid will be described. An apparatus for ejecting liquid is an apparatus that includes a liquid ejection head or a liquid ejection unit and that ejects liquid by driving the liquid ejection head. The apparatus for ejecting liquid includes not only an apparatus capable of ejecting liquid to an object to which liquid can adhere, but also an apparatus for ejecting liquid toward the air or liquid. For example, an image forming apparatus, a three-dimensional modeling apparatus, a treatment liquid coating apparatus, a jet granulating apparatus, and the like can be given.

  In the present application, an apparatus for ejecting liquid is an apparatus that includes a liquid ejection head or a liquid ejection unit, and that ejects liquid by driving the liquid ejection head. The apparatus for ejecting liquid includes not only an apparatus capable of ejecting liquid to an object to which liquid can adhere, but also an apparatus for ejecting liquid toward the air or liquid.

  The apparatus for discharging the liquid can include means for feeding, transporting, and discharging the liquid to which the liquid can adhere, a pre-processing apparatus, a post-processing apparatus, and the like.

  For example, as an apparatus for ejecting liquid, an image forming apparatus that is an apparatus that ejects ink to form an image on a sheet, or a powder in which powder is formed in a layer to form a three-dimensional structure (three-dimensional structure) There is a three-dimensional modeling apparatus (three-dimensional modeling apparatus) that discharges a modeling liquid to a body layer.

  Moreover, the apparatus which discharges a liquid is not limited to what can visualize significant images, such as a character and a figure, by the discharged liquid. For example, what forms a pattern etc. which does not have a meaning in itself, and what forms a three-dimensional image are also included.

  The liquid dischargeable means that the liquid can be attached at least temporarily and adheres and adheres, or adheres and penetrates. Specific examples include recording media such as paper, recording paper, recording paper, film, cloth, etc., electronic parts such as electronic boards, piezoelectric elements, powder layers (powder layers), organ models, examination cells, and other media. Yes, unless specifically limited, includes everything that the liquid adheres to.

  The material to which the liquid can be attached may be paper, thread, fiber, fabric, leather, metal, plastic, glass, wood, ceramics, or the like as long as the liquid can be attached even temporarily.

  The liquid is not particularly limited as long as it has a viscosity and surface tension that can be ejected from the head, but the liquid has a viscosity of 30 mPa · s or less at room temperature, normal pressure, or by heating and cooling. Is preferred. More specifically, solvents such as water and organic solvents, colorants such as dyes and pigments, functional compounds such as polysynthetic compounds, resins and surfactants, biocompatible materials such as DNA, amino acids, proteins and calcium. And edible materials such as natural pigments, solutions, suspensions, emulsions, and the like. These can be used, for example, in applications such as inkjet inks, surface treatment liquids, components for electronic elements and light-emitting elements, liquids for forming electronic circuit resist patterns, and three-dimensional modeling material liquids.

  In addition, the apparatus for discharging the liquid is an apparatus in which the liquid discharge head and the apparatus to which the liquid can be attached move relatively, but are not limited thereto. Specific examples include a serial type apparatus that moves the liquid discharge head, a line type apparatus that does not move the liquid discharge head, and the like.

  In addition, as a device for discharging liquid, a processing liquid application device for discharging a processing liquid onto a sheet in order to apply the processing liquid to the surface of the sheet for the purpose of modifying the surface of the sheet, and the raw materials are dispersed in the solution. There is an injection granulator that sprays the composition liquid through a nozzle to granulate fine particles of raw materials.

  As described above, the ink jet recording apparatus which is an example of the apparatus for ejecting liquid in the present embodiment has the nozzle in the same direction as the paper transport direction with respect to the recording medium before the recording medium passes through the paper edge detection unit. The angle is set so that the wind does not enter under the recording medium. In addition, after the recording medium passes through the sheet edge detection unit, the nozzle is directed in the direction opposite to the sheet conveying direction with respect to the recording medium, and the angle is set so that wind does not enter under the recording medium.

  Thus, the phenomenon that the wind hits the recording medium and the wind enters under the recording medium is minimized, and fluttering of the recording medium is prevented. Further, the air blowing angle is varied according to the position of the recording medium so that the wind does not enter under the recording medium, thereby preventing the recording medium from flapping.

  According to the present invention, it is possible to obtain an apparatus for ejecting liquid capable of improving the quick drying property while preventing flapping of the recording medium by adjusting the air blowing angle, a control method for the apparatus for ejecting liquid, and a program. It is done.

  As mentioned above, although embodiment of this invention has been described so far, embodiment of this invention is not limited to embodiment mentioned above. That is, other embodiments, additions, changes, deletions, and the like can be changed within the scope that can be conceived by those skilled in the art, and as long as the effects of the present invention are exhibited in any aspect, the scope of the present invention is included. It is included.

DESCRIPTION OF SYMBOLS 1 Inkjet recording device 2 Paper conveyance part 3 Image formation part 4 Air blower 5 Belt 6 Nozzle 21 Stretching roller 22 Drive roller 31Y, 31M, 31C, 31K Inkjet head 32, 52 Paper edge part detection part 41 Display panel 42 Paper feed mechanism 43 Print Engine 44 Paper Discharge Mechanism 45 External Connection Device I / F
46 Storage Unit 51 Conveyance Control Unit 53 Measurement Unit 54 Judgment Control Unit 55 Angle Adjustment Unit 56 Wind Speed Adjustment Unit 201 CPU
202 RAM
203 ROM
204 HDD
205 I / F
206 Bus 207 LCD
208 Operation Unit 209 External Device 300 Controller 301 Main Control Unit 302 Engine Control Unit 303 Image Processing Unit 304 Operation Display Control Unit 305 Input / Output Control Unit

JP 2013-047136 A

Claims (7)

An apparatus for ejecting a liquid that in one direction transports a recording medium from which the liquid has been ejected after ejecting the liquid toward the recording medium,
A blowing means for sending wind toward the recording medium conveyed in the one direction;
Detecting means for detecting an end of the recording medium conveyed in the one direction perpendicular to the one direction;
Angle adjusting means for adjusting the angle of the wind sent out by the blowing means toward the recording medium conveyed in the one direction;
Including
The angle adjusting means sends out the air blowing means toward the recording medium transported in the one direction depending on whether the end portion is upstream or downstream of the detecting means in the one direction. An apparatus for ejecting liquid, wherein the angle of the wind is adjusted.   From the time when the upstream end of the recording medium conveyed in the one direction is detected by the detecting means until the downstream end of the recording medium is detected, the angle adjusting means is 2. The apparatus for ejecting liquid according to claim 1, wherein an angle of the wind is adjusted so that a direction of the wind sent out by the blowing unit toward the recording medium is substantially the same as the one direction. .   After the detection means detects the downstream end of the recording medium conveyed in the one direction, the angle adjusting means is the direction of the wind sent by the blowing means toward the recording medium The apparatus for ejecting a liquid according to claim 1, wherein the angle of the wind is adjusted so that is in a direction substantially opposite to the one direction.   Wind speed adjusting means for adjusting the wind speed of the wind sent toward the recording medium conveyed in the one direction, and the upstream end of the recording medium conveyed in the one direction is detected by the detecting means. The wind speed adjusting means adjusts the wind to one wind speed from the detection until the downstream end of the recording medium is detected, and the detection means transports the wind in the one direction. Before the upstream end of the recording medium is detected and after the downstream end of the recording medium conveyed in the one direction is detected, the wind speed adjusting means causes the wind to flow through the one of the recording media. The apparatus for discharging a liquid according to any one of claims 1 to 3, wherein the apparatus adjusts to a wind speed smaller than the wind speed.   A plurality of air blowing means are provided in the same direction as the one direction so that each of the winds is sent out toward the recording medium conveyed in the one direction, and the angle adjusting means includes the plurality of air blowing means. Among them, a blowing unit that sends out the wind first toward the recording medium conveyed in the one direction, and a blowing unit that sends out the wind last toward the recording medium conveyed in the one direction. The apparatus for discharging a liquid according to any one of claims 1 to 4, wherein an angle of the wind to be sent out is adjusted. A blower unit that discharges the liquid toward the recording medium, then transports the recording medium on which the liquid is discharged in one direction, and sends wind toward the recording medium that is transported in the one direction; Detecting means for detecting an end portion of the recording medium conveyed in the direction perpendicular to the one direction, and an angle for adjusting the angle of the wind sent out by the blowing means toward the recording medium conveyed in the one direction A control method of a device for discharging a liquid including an adjusting means,
The angle adjusting means sends out the air blowing means toward the recording medium conveyed in the one direction depending on whether the end portion is upstream or downstream of the detecting means in the one direction. And a method of adjusting the angle of the wind. A blower unit that discharges the liquid toward the recording medium, then transports the recording medium on which the liquid is discharged in one direction, and sends wind toward the recording medium that is transported in the one direction; Detecting means for detecting an end portion of the recording medium conveyed in the direction perpendicular to the one direction, and an angle for adjusting the angle of the wind sent out by the blowing means toward the recording medium conveyed in the one direction A program for causing an apparatus for discharging a liquid to include the adjusting means,
The angle adjusting means sends out the air blowing means toward the recording medium conveyed in the one direction depending on whether the end portion is upstream or downstream of the detecting means in the one direction. A program for executing a process of adjusting the wind angle.

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