Image forming apparatus

Abstract

To provide an image forming apparatus that can further suppress the occurrence of malfunctions and image defects caused by lint. [Solution] The inkjet recording apparatus 1, which is an image forming apparatus, comprises a transport unit 3 that transports the fabric in the transport direction, a blower unit 51 that blows air from the inside to the outside in the width direction perpendicular to the transport direction of the fabric, a water spray unit 52 that sprays water onto the width direction end of the fabric that has been blown with air by the blower unit 51, and an ink ejection unit 6 that forms an image by ejecting ink onto the fabric that has been blown with air and water.

Description

Technical Field

[0001] The present disclosure relates to an image forming apparatus.

Background Art

[0002] Conventionally, image forming apparatuses that form images by ejecting ink from an ink ejection portion onto a fabric are known. In such an image forming apparatus, as shown in FIG. 5, when standing fluff of the fabric comes into contact with the ink ejection portion, image defects or malfunctions of the ink ejection portion may occur. Further, such a phenomenon occurs particularly prominently in relatively low-cost fabrics that have a fluff region at the fabric edge.

[0003] Such a problem can be solved by cutting the fluff together with the fabric edge in advance using a known fluff cutter. However, when a fluff cutter is used, additional costs are incurred accordingly. Moreover, when it is desired to form an image even on the fluff region at the fabric edge, such a solution cannot be adopted.

[0004] Accordingly, for example, Patent Document 1 describes a configuration in which a fabric is pressed and held by a platen, and this configuration can suppress the rising of fluff. However, in the invention described in Patent Document 1, the fluff at the edge may be pressed not toward the outside of the fabric but toward the inside, that is, toward the image forming region, which may cause image defects.

[0005] Further, Patent Document 2 describes a configuration in which fluff is pressed toward the outside of the fabric by a roller and made to adhere to an adhesive belt that conveys the fabric. Since the invention described in Patent Document 2 presses the fluff toward the outside of the fabric, it does not have the problem that the invention described in Patent Document 1 has.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

[0007] However, in the invention described in Patent Document 2, depending on the rigidity of the fluff, the fluff pressed against the adhesive belt may rise up, which can still cause image defects or malfunctions in the ink ejection unit.

[0008] This disclosure has been made in view of the circumstances described herein. Its purpose is to provide an image forming apparatus that can more effectively suppress the occurrence of malfunctions and image defects caused by lint. [Means for solving the problem]

[0009] To solve the above problems, this disclosure provides an image forming apparatus, A conveying unit that conveys the fabric in the conveying direction, A blower unit that blows air from the inside to the outside in the width direction perpendicular to the conveying direction of the fabric, A water spray unit that sprays water onto the widthwise end of the fabric to which air has been blown by the aforementioned blower unit, The device includes an ink ejection unit that ejects ink onto the fabric to which the air and water are blown, thereby forming an image. [Effects of the Invention]

[0010] According to this disclosure, the occurrence of malfunctions and image defects caused by lint can be further suppressed. [Brief explanation of the drawing]

[0011] [Figure 1] This is a side cross-sectional view of an inkjet recording device. [Figure 2] This is a block diagram of an inkjet recording device. [Figure 3] This is an enlarged top view of the fluff suppression section. [Figure 4]This is a table showing the effect of water spraying by the water injection unit. [Figure 5] This is a diagram showing an example of a fabric having fuzz at an end portion. [Modes for Carrying Out the Invention]

[0012] Hereinafter, the image forming apparatus of the present disclosure will be described in detail with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples. In the following description, components having the same functions and configurations are denoted by the same reference numerals, and descriptions thereof are omitted.

[0013] [Overall Configuration of Inkjet Recording Apparatus] First, a configuration example of an inkjet recording apparatus 1 which is an embodiment of the image forming apparatus of the present disclosure is disclosed. Figure 1 is a side sectional view showing the schematic configuration of the inkjet recording apparatus 1. Figure 2 is a block diagram of the inkjet recording apparatus 1. The inkjet recording apparatus 1 includes a feeding unit 2, a conveying unit 3, a fuzz suppressing unit 5, an ink ejection unit 6, a discharge unit 7, a control unit 8, and the like.

[0014] (Feeding Unit) The feeding unit 2 includes a placement section 21. On the placement section 21, for example, a rotatable fabric wound around a support shaft is placed. The feeding unit 2 is provided with a conveying unit composed of one or a plurality of first conveying rollers 22 on the side closer to the inkjet recording apparatus 1 than the placement section 21. In the feeding unit 2, the fabric placed on the placement section 21 is conveyed to the inkjet recording apparatus 1 by the conveying unit.

[0015] (Conveying Unit) In the conveying unit 3, an endless conveying belt 33 having a predetermined width is stretched across a driving roller 31 and a driven roller 32 which are arranged in parallel at a predetermined interval. The upper surface of the conveying belt 33 stretched across the driving roller 31 and the driven roller 32 is defined as a placement surface on which the fabric is placed in close contact therewith.

[0016] The drive roller 31 is driven by a sub-scanning motor (not shown). The sub-scanning motor is under the control of a control unit 8 described later. By the rotational driving of the sub-scanning motor, the drive roller 31 rotates at a predetermined speed in the conveyance direction, which is the direction of the arrow in Figure 1. Then, the rotation of the drive roller 31 causes the conveyance belt 33 stretched between the drive roller 31 and the driven roller 32 to rotate and move. Through such an operation, the fabric placed on the placement surface of the conveyance belt 33 is conveyed toward the conveyance direction.

[0017] Further, in the vicinity of the conveyance belt 33, it is preferable to provide a known belt heater that is driven under the control of the control unit 8 to heat the conveyance belt 33. With this configuration, the rigidity of the fuzz laid down by the fuzz suppressing unit 5 is weakened by heat, and the effect of maintaining the laid state of the fuzz can be enhanced.

[0018] (Fuzz suppressing unit) Figure 3 is an enlarged top view of the fuzz suppressing unit 5. The fuzz suppressing unit 5 suppresses the rising of fuzz after laying down the fuzz provided at the width direction end orthogonal to the conveyance direction when the fabric is viewed from the top toward the outer side of the fabric, thereby suppressing failures of the ink ejection unit 6 caused by rising fuzz and the occurrence of disturbance in the formed image. The fuzz suppressing unit 5 includes an air blowing unit 51, a water jetting unit 52, and a pressing unit 53.

[0019] {Air blowing unit} The air blowing unit 51 sends air to the fuzz, thereby laying the fuzz that has fallen toward the inner side in the width direction of the fabric down toward the outer side. For example, the air blowing unit 51 includes a nozzle, and as shown in Figure 3, blows air from the inner side toward the outer side in the width direction of the fabric.

[0020] Preferably, the air blower 51 blows air at a wind speed of 12 m / s or more, and the time the fluff is exposed to the air is 1 / 1000 of a second (1 millisecond, 1 ms) or more. With this configuration, the air blower 51 can blow air sufficiently, and the fluff can be flattened to the outside of the fabric regardless of the type of fabric. The time the fluff is exposed to air can be calculated by dividing the length of the air blowing area by the air blower 51 in the conveying direction by the conveying speed of the conveying belt 33.

[0021] Furthermore, the air blower 51 is configured to blow air at an angle of 0° to less than 90° relative to the image-forming surface of the fabric. With this configuration, the air blown by the air blower 51 can reliably flatten the fibers outwards from the fabric.

[0022] Furthermore, it is preferable that the position of the air blower 51 in the vertical direction, which is perpendicular to the conveying direction and width direction, be closer to the conveying belt 33. This configuration is preferable because it prevents excessive flattening of the fibers due to the blowing of air.

[0023] Furthermore, the air blowing unit 51 is not limited to a configuration in which air is blown by a nozzle; for example, it may also be configured to blow air by a compressor or a fan.

[0024] {Water injection part} The water injection unit 52 is equipped with a nozzle that sprays water onto the fluff-forming region of the fabric under the control of the control unit 8. The water injection unit 52 is located, for example, downstream of the air blower unit 51 in the conveying direction. When the water injection unit 52 sprays water onto the fluff that has been bent outward in the width direction of the fabric by the air blower unit 51, the fibers of the fluff swell and soften, thus maintaining the outward bending of the fabric in the width direction.

[0025] Figure 4 is a table summarizing whether or not a softening effect occurs when different amounts of water are sprayed onto cotton satin and kanakine fabrics. In Figure 4, "G (Good)" indicates that a softening effect occurs, and "NG (No Good)" indicates that no softening effect occurs.

[0026] As shown in Figure 4, both cotton satin and kanakine exhibit a softening effect when sprayed with water at a basis weight ratio of 25% or more. The basis weight of the fabric is 50 g / m². 2 If the amount is around 12 g / m², the basis weight ratio is 25%. 2 Since water spraying is required, the water spray unit 52 has a water flow rate of at least 12 g / m². 2 It is preferable to spray the water as described above.

[0027] While a larger amount of water sprayed by the water injection unit 52 will produce a softening effect, it will also increase the area over which the water is sprayed, making the ink ejected by the ink ejection unit 6 more prone to bleeding. Therefore, it is preferable for the control unit 8 to appropriately set the amount of water to be ejected according to the fabric information obtained from the print job.

[0028] Furthermore, it is preferable that the air blower 51 and the water sprayer 52 be configured to spray air and water heated by a known predetermined heater driven under the control of the control unit 8. With this configuration, the rigidity of the fibers is weakened by the heat, which not only maintains the flattening of the fibers but also increases their tendency to flatten outwards from the fabric.

[0029] Furthermore, it is preferable that the air blower 51 and the water sprayer 52 are configured such that their positions in the width direction can be arbitrarily set. With this configuration, air and water can be sprayed onto the fibers from appropriate positions corresponding to the width of the fabric and the width of the fibers.

[0030] {Pressing part} The pressing section 53 is located downstream in the conveying direction from the blowing section 51 and the water spray section 52, and has a length in the width direction that is approximately the same as or greater than the width dimension of the conveying belt 33, for example, and is a cylindrical roller. The pressing section 53 can be raised and lowered vertically by a lifting mechanism (not shown). The pressing section 53 then presses the fluff of the fabric, which has been bent outward in the width direction by the blowing section 51 and whose bend has been maintained by the water spray section 52, against the conveying surface of the conveying belt 33, thereby further maintaining the bend of the fluff.

[0031] It is preferable to enhance the tilt-maintaining effect by configuring the pressing section 53 to be heated by a known predetermined heater driven under the control of the control unit 8, similar to the blowing section 51 and the water injection section 52.

[0032] (Ink ejection section) Returning to Figures 1 and 2, the ink ejection unit 6 records an image by ejecting ink onto the fabric being transported by the transport unit 3, located downstream of the fluff suppression unit 5 in the transport direction. The ink ejection unit 6 includes, for example, a carriage rail 61 and a carriage 62.

[0033] {carriage rail, carriage} The carriage rail 61 is provided above the fabric being transported by the conveyor belt 33, along the width direction. The carriage 62 moves back and forth along the carriage rail 61 in the width direction, driven by a carriage motor (not shown) under the control of the control unit 8. The carriage 62 is composed of multiple inkjet heads and includes multiple head units 621 that eject ink at appropriate timings based on image data to record images. The carriage 62 includes, for example, four head units 621 corresponding to four colors of ink: yellow (Y), magenta (M), cyan (C), and black (K). The number of head units 621 may be three or fewer, or five or more. Alternatively, a single inkjet head may constitute a head unit 621.

[0034] The carriage 62 moves in the width direction of the fabric by carriage rail 61 and ejects ink from the head unit 621 to form an image on the fabric. In other words, the inkjet recording apparatus 1 according to this embodiment is equipped with an ink ejection unit 6 of the so-called multi-pass method (serial head method).

[0035] Furthermore, the ink ejection unit 6 is not limited to a multi-pass system. For example, it may be a so-called single-pass system (line head system) ink ejection unit 6 in which head units 621 of each color, whose width is approximately equal to the width of the transport belt 33, are arranged at predetermined intervals from the upstream side in the transport direction to form an image.

[0036] (Area where seepage inhibitor has been applied) Furthermore, the carriage 62 may be equipped with a bleeding inhibitor application unit 4 for applying a bleeding inhibitor. The bleeding inhibitor prevents the ink ejected by the ink ejection unit 6 from bleeding by the water sprayed by the water spray unit 52. The bleeding inhibitor is, for example, an adhesive, but is not limited to this. As described above, the water spray unit 52 sprays water onto the edges of the fabric in the width direction. Therefore, the bleeding inhibitor application unit 4 can similarly be configured to apply the bleeding inhibitor to the edges of the fabric in the width direction.

[0037] The ink bleeding inhibitor coating section 4 only needs to be provided so that the ink bleeding inhibitor can be applied before the ink ejection section 6 ejects ink onto the fabric. Therefore, although Figure 1 illustrates a configuration in which the ink bleeding inhibitor coating section 4 is provided upstream of the head unit 621 in the transport direction on the carriage 62, the configuration is not limited to this, and for example, the ink bleeding inhibitor coating sections 4 may be provided on both sides in the width direction of the head unit 621. Furthermore, the ink bleeding inhibitor coating section 4 does not have to be mounted on the carriage 62, and may be provided at a predetermined location upstream of the ink ejection section 6 in the transport direction. However, since it is preferable to apply the ink bleeding inhibitor after spraying water, it is preferable to provide the ink bleeding inhibitor coating section 4 downstream of the water spray section 52 in the transport direction.

[0038] (Discharge section) The discharge unit 7 is located downstream of the conveying unit 3 in the conveying direction and stores the fabric conveyed by the conveying unit 3. The discharge unit 7 includes, for example, a winding unit 71 that winds up the fabric discharged by the conveying unit 3. The discharge unit 7 also includes a conveying unit consisting of one or more second conveying rollers 72 located on the inkjet recording device 1 side of the winding unit 71. The fabric discharged from the conveying unit 3 is conveyed to the winding unit 71 side by the conveying unit. The winding unit 71 then winds up the fabric conveyed by the conveying unit into a roll as needed.

[0039] (Control Unit) The control unit 8 includes a CPU (Central Processing Unit) 81, RAM (Random Access Memory) 82, ROM (Read Only Memory) 83, and a storage unit 84, etc.

[0040] {CPU} The CPU 81 reads various control programs and setting data stored in the ROM 83, stores them in the RAM 82, and executes the programs to perform various calculations. The CPU 81 also comprehensively controls the overall operation of the inkjet recording device 1.

[0041] {RAM} RAM82 provides the CPU81 with a working memory space to store temporary data. RAM82 may also include non-volatile memory.

[0042] {ROM} ROM83 stores various control programs and setting data executed by the CPU81. Alternatively, rewritable non-volatile memory such as EEPROM (Electrically Erasable Programmable Read Only Memory) or flash memory may be used instead of ROM81.

[0043] {Storage section} The storage unit 84 stores print jobs (image recording commands) and image data related to said print jobs that are input from an external device (not shown). For example, an HDD (Hard Disk Drive) may be used as the storage unit, and DRAM (Dynamic Random Access Memory) may also be used in combination.

[0044] {Head Control Unit} In particular, the control unit 8 functions as a head control unit that supplies drive signals to the head unit 621 at the appropriate timing according to the image data, when the CPU 81 executes a program.

[0045] {Transport Control Unit} Furthermore, the control unit 8 functions as a transport control unit that controls the transport operation by supplying a drive signal to the sub-scanning motor of the drive roller 31, thereby rotating the transport belt 33 at a predetermined speed and timing.

[0046] {Pressing control unit} Furthermore, the control unit 8 functions as a pressing control unit that presses the pressing unit 53 against and separates it from the mounting surface of the conveyor belt 33, and controls the amount of nip formed between the mounting surface of the conveyor belt 33 and the pressing unit 53.

[0047] {Acquisition part} Furthermore, the control unit 8 functions as an acquisition unit that acquires environmental conditions of the environment in which the inkjet recording device 1 is installed, based on the measurement results of a sensor (not shown) provided on the inkjet recording device 1. Environmental conditions include, for example, temperature, humidity, airflow, and atmospheric pressure. The control unit 8 also acquires printing conditions such as the type of fabric, the printing speed performed by the ink ejection unit 6, and the fabric transport speed by the transport unit 3, based on a print job acquired from an external device (not shown).

[0048] {Heating Control Unit} Furthermore, the control unit 8 functions as a heating control unit that controls the output of heaters in the conveying unit 3 (especially the conveying belt 33), the blowing unit 51, the water spraying unit 52, and the pressing unit 53 based on acquired environmental conditions. Specifically, the control unit 8 controls the temperature of the conveying belt 33 and the pressing unit 53, as well as the temperature of the air blown by the blowing unit 51 and the water sprayed by the water spraying unit 52, so that they are at or above the acquired ambient temperature. This control by the control unit 8 heats the fibers of the fabric, weakening their rigidity, which improves the ease with which the fluff is flattened by the blowing unit 51 and the ease with which the fluff is maintained when flattened by the water spraying unit 52 and the pressing unit 53.

[0049] {First control unit, Second control unit} Furthermore, the control unit 8 functions as a first control unit and a second control unit, respectively, that control the airflow rate of the air blower unit 51 and the water spray rate of the water spray unit 52 based on acquired environmental conditions and printing conditions. For example, if the fabric type is highly rigid, the control unit 8 controls the airflow rate (airflow speed) of the air blower unit 51 and the water spray rate (water spray speed) of the water spray unit 52 to be increased (faster) so that the fluff is more easily flattened. Also, if the printing speed and transport speed are above a predetermined value, the time the fluff is exposed to air and water is shortened, so the control unit 8 controls the airflow rate of the air blower unit 51 and the water spray rate of the water spray unit 52 to be increased.

[0050] [Effects of the Embodiment] As described above, the inkjet recording device 1 includes a transport unit 3 that transports the fabric in the transport direction. The inkjet recording device 1 also includes a blower unit 51 that blows air from the inside to the outside in the width direction perpendicular to the transport direction of the fabric, and a water spray unit 52 that sprays water onto the width direction end of the fabric that has been blown air by the blower unit 51. The inkjet recording device 1 also includes an ink ejection unit 6 that forms an image by ejecting ink onto the fabric that has been blown air and water onto it. With this configuration, the fluff is flattened outwards by the air blower unit 51, and then the fabric fibers are swelled by the water spray unit 52, weakening their rigidity and preventing them from standing up again, thus further suppressing the occurrence of malfunctions and image defects caused by fluff.

[0051] Furthermore, instead of using a roller or the like to flatten the fluff that comes into contact with the fabric outwards in the width direction, the blower unit 51 flattens the fluff in a non-contact manner outwards in the width direction of the fabric, thus reducing the likelihood of problems caused by the fluff fabric fibers coming into contact with the fabric. In addition, fibrous debris and dust present on the surface of the fabric can also be blown away by the air, reducing the likelihood of problems occurring in the resulting image.

[0052] Furthermore, as described above, since the inkjet recording apparatus 1 according to this embodiment is configured to weaken the rigidity of the fluff flattened by air with water, the conveyor belt 33 does not need to be an adhesive belt.

[0053] [Other configurations] Although one embodiment of the present disclosure has been described above, the scope of the present disclosure is not limited to the above embodiment. The scope of the present disclosure includes the scope of the invention as described in the claims and the scope of its equivalents.

[0054] For example, in the above description, it was stated that the ink ejection unit 6 forms an image by ejecting ink onto a fabric to which air and water are blown. However, the areas where the ink ejection unit 6 ejects ink are not limited to the widthwise edges of the fabric to which air and water are blown. As with the conventionally known inkjet recording apparatus 1, ink may be ejected as appropriate to image-forming areas other than the widthwise edges of the fabric.

[0055] Furthermore, while the above describes an inkjet recording apparatus 1 equipped with an ink ejection unit 6 that performs inkjet printing using an inkjet head as one embodiment of the image forming apparatus of the present disclosure, the present disclosure is not limited thereto. For example, the present disclosure is also applicable to an image forming apparatus equipped with an ink ejection unit 6 that performs silkscreen printing or sublimation transfer printing.

[0056] Furthermore, while the above example illustrates a configuration in which the conveying unit 3 is equipped with a conveying belt 33 and the fabric is placed on the conveying belt 33 for conveyance, the system is not limited to this configuration. In other words, the conveying unit 3 may not be equipped with a conveying belt 33, and the fabric may be conveyed in a so-called roll-to-roll manner, where the fabric is tensioned and conveyed on multiple conveying rollers (for example, a first conveying roller 22 and a second conveying roller 72).

[0057] Furthermore, although the above states that the conveyor belt 33 does not have to be an adhesive belt, it may be an adhesive belt having an adhesive layer on the surface where it is placed, in order to further suppress the raising of fluff. The adhesive layer is formed by applying an adhesive called a base coat, for example. Examples of adhesives that make up the adhesive layer include water-soluble resins, pressure-sensitive resins, and heat-sensitive resins. In this configuration, the fabric is pressed against the conveyor belt 33 by a pressure roller (not shown), thereby causing the fabric to adhere to the adhesive layer.

[0058] Furthermore, although the above configuration includes a bleeding inhibitor coating section 4, it is not limited to this. For example, the bleeding inhibitor coating section 4 may be omitted, and a predetermined bleeding inhibitor may be included in the water sprayed by the water spray section 52. In this configuration, the bleeding inhibitor is, for example, a flocculant that aggregates pigment ink or dispersion ink when the ink discharged by the ink discharge section 6 is pigment ink or dispersion ink. Alternatively, when the ink discharged by the ink discharge section 6 is acid-aggregated ink, the bleeding inhibitor is an acidic treatment solution that creates an acidic environment. [Explanation of Symbols]

[0059] 1. Inkjet recording device (image forming apparatus) 3. Conveying section 33 Conveyor belt 4. Area where the bleeding inhibitor is applied. 51 Air blower 52 Water injection part 53 Pressing part 6. Ink ejection section 8. Control Unit (Acquisition Unit, Heating Control Unit, First Control Unit, Second Control Unit)

Claims

1. A conveying unit that conveys the fabric in the conveying direction, A blower unit that blows air from the inside to the outside in the width direction perpendicular to the conveying direction of the fabric, A water spray unit that sprays water onto the widthwise end of the fabric to which air has been blown by the aforementioned blower unit, An image forming apparatus comprising: an ink dispensing unit that forms an image by dispensing ink onto the fabric to which the air and water have been sprayed.

2. The image forming apparatus according to claim 1, wherein the air blowing unit blows air at an angle of 0° or more and less than 90° with respect to the image forming surface of the fabric.

3. The image forming apparatus according to claim 1, wherein the water spraying unit sprays water containing a bleeding inhibitor to suppress ink bleeding.

4. The image forming apparatus according to claim 1, further comprising a bleeding inhibitor application unit for applying a bleeding inhibitor to suppress ink bleeding.

5. The image forming apparatus according to claim 4, wherein the bleeding inhibitor application section applies the bleeding inhibitor to the fabric that has been sprayed with water by the water spray section.

6. The conveying unit is equipped with a conveying belt, The image forming apparatus according to claim 1, wherein the fabric is placed on the conveyor belt and conveyed in the conveying direction.

7. The image forming apparatus according to claim 6, wherein the conveyor belt has an adhesive layer formed on its mounting surface.

8. An acquisition unit that acquires at least one of the following: the type of fabric of the cloth, the ink ejection speed of the ink ejection unit, the transport speed of the transport unit, and environmental conditions. The image forming apparatus according to claim 1, further comprising a first control unit that controls the amount of air blown by the air blowing unit according to the acquired content of the acquisition unit.

9. The image forming apparatus according to claim 8, wherein the first control unit controls the air blowing unit so that the time for which the air blowing unit blows air onto the fluff is 1 ms or more.

10. The acquisition unit acquires the ambient temperature as the environmental condition, The image forming apparatus according to claim 8, further comprising a heating control unit that heats the air blown by the air blower so that it reaches a temperature equal to or higher than the ambient temperature.

11. An acquisition unit that acquires at least one of the following: the type of fabric of the cloth, the ink ejection speed of the ink ejection unit, the transport speed of the transport unit, and environmental conditions. The image forming apparatus according to claim 1, further comprising a second control unit that controls the amount of water sprayed by the water injection unit according to the acquired content of the acquisition unit.

12. The second control unit sprays water at a rate of 12 g / m². ２ The image forming apparatus according to claim 11, which is controlled to be as described above.

13. The acquisition unit acquires the ambient temperature as the environmental condition, The image forming apparatus according to claim 11, further comprising a heating control unit that heats the water sprayed by the water spray unit so that it reaches a temperature equal to or higher than the ambient temperature.

14. The image forming apparatus according to claim 1, wherein the pressing section for pressing the fabric from the image forming surface side is located upstream of the ink ejection section in the transport direction and downstream of the air blowing section and the water jetting section in the transport direction.

15. The image forming apparatus according to claim 14, wherein the pressing portion is provided so as to be in contact with the area where air is blown by the blowing portion or the area where water is sprayed by the water spraying portion.

16. An acquisition unit that acquires ambient temperature, The image forming apparatus according to claim 14, further comprising a heating control unit that heats the pressing portion to a temperature equal to or higher than the ambient temperature.

17. An acquisition unit that acquires ambient temperature, The image forming apparatus according to claim 1, further comprising a heating control unit that heats the transport unit to a temperature equal to or higher than the ambient temperature.

18. The image forming apparatus according to claim 1, wherein the water injection unit is provided downstream of the air blowing unit in the conveying direction.

19. The image forming apparatus according to any one of claims 1 to 18, wherein the ink ejection unit ejects ink using an inkjet method.

Images