Recording medium transport device and image forming apparatus

Abstract

A recording medium transport device and an image forming apparatus, the recording medium transport device including: a belt member that circularly moves and transports a recording medium attached to an outer peripheral surface of the belt member; a protruding part that protrudes from the outer peripheral surface of the belt member, is provided in a linear shape, and is disposed in a state inclined with respect to the direction of movement of the belt member; and a removal member that is disposed in contact with the outer peripheral surface of the belt member and removes attachments adhering to the outer peripheral surface.

Description

Technical Field

[0001] This invention relates to a recording media transmission apparatus and an image forming apparatus. Background Technology

[0002] Patent document 1 discloses a structure in which a through hole extending along the thickness direction is provided in the belt body and a protrusion protruding along the thickness direction on the belt conveying surface side.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2002-137840 Summary of the Invention

[0004] Dirt adheres to the tape components that transmit recording media. Accordingly, the surfaces of the tape components need to be cleaned.

[0005] In cleaning related to the surface of belt components, it is usually necessary to clean the entire surface. However, cleaning the entire surface of belt components can easily result in uncleaned areas, which can reduce the reliability of the cleaning process.

[0006] The object of the present invention is to improve the reliability of cleaning of the tape component for transmitting recording media compared to a structure in which no protrusions are provided on the surface of the tape component for transmitting recording media.

[0007] The invention described in Scheme 1 is a recording media transport device comprising: a belt member that circulates and transports a recording medium attached to the outer peripheral surface of the belt member; a protrusion that protrudes from the outer peripheral surface of the belt member and is arranged in a linear shape and configured in an inclined state relative to the direction of movement of the belt member; and a removal member that is configured to contact the outer peripheral surface of the belt member and removes the adhering material attached to the outer peripheral surface.

[0008] In the invention described in Scheme 2, in the recording medium transport apparatus described in Scheme 1, a heating device is provided on a downstream side or a upstream side of the recording medium based on the belt member in the transport direction of the recording medium. The heating device heats the recording medium, and the removal member contacts a portion of the belt member located on the side opposite to the heating device side.

[0009] In the invention described in Scheme 3, in the recording medium transport apparatus described in Scheme 2, the heating device is provided downstream of the recording medium in the transport direction based on the belt member. Inside the belt member, there is a drive rotating member that rotates and imparts a driving force to the belt member for its movement; and a driven rotating member, located upstream of the drive rotating member in the transport direction of the recording medium, receiving a force from the belt member and rotating driven by the belt member. The removal member presses against the driven rotating member via the belt member.

[0010] In the recording medium transmission device described in any one of Schemes 1 to 3, the invention of Scheme 4 further includes a second protrusion, which is different from the first protrusion which is configured as an inclined protrusion, and is arranged in a linear shape and has an inclination angle relative to the direction of movement that is different from that of the first protrusion.

[0011] In the recording media transmission device described in Scheme 4, the invention described in Scheme 5 includes a plurality of first protrusions that extend in a common direction, and a plurality of second protrusions that extend in a direction different from the extension direction of the first protrusions but in a common direction. By providing a plurality of first and second protrusions with different extension directions, a grid-like protrusion is provided on the outer peripheral surface of the belt member.

[0012] In the recording medium transport apparatus described in Scheme 4 or 5, the first protrusion is inclined toward one end of the belt member in the width direction, towards the downstream side in the transport direction of the recording medium, and the second protrusion is inclined toward the other end of the belt member in the width direction, towards the downstream side in the transport direction of the recording medium.

[0013] In the recording media transport apparatus described in any one of embodiments 1 to 6, the invention of embodiment 7 provides a plurality of protrusions arranged in an inclined state relative to the direction of movement and arranged in a grid shape. The belt member is provided with a hole for air to pass through from the outer peripheral surface side of the belt member toward the inner peripheral surface side, and the hole is surrounded by a protrusion located around the hole among the plurality of protrusions arranged in a grid shape.

[0014] The invention described in Scheme 8 is an image forming apparatus comprising: an image forming section for forming an image on a recording medium; a heating device for heating the recording medium on which the image has been formed by the image forming section; and a recording medium transport device for transporting the recording medium on which the image has been formed by the image forming section to the heating device, or for transporting the recording medium that has passed through the heating device, wherein the recording medium transport device has the structure of any one of Schemes 1 to 7.

[0015] Invention Effects

[0016] According to the first aspect of the present invention, compared with a structure in which no protrusion is provided on the surface of the tape component for transmitting the recording medium, the reliability of cleaning of the tape component for transmitting the recording medium can be improved.

[0017] According to the second aspect of the present invention, compared with the case where the removal component and the portion of the belt component located on the heating device side are in contact, it is less likely that the removal material removed by the removal component will adhere to the removal component.

[0018] According to the third aspect of the present invention, compared with the case where the removal member is pressed against the drive rotating member via the belt member, it is less likely that the removed material removed by the removal member will become stuck on the removal member.

[0019] According to the fourth aspect of the present invention, compared with the case where only the first protrusion is provided on the outer peripheral surface of the belt component, the support of the recording medium by the protrusion can be stabilized.

[0020] According to the fifth aspect of the present invention, compared with the case where only the first protrusion is provided on the outer peripheral surface of the belt component, the support of the recording medium by the protrusion can be stabilized.

[0021] According to the sixth aspect of the present invention, compared with the case where both the first protrusion and the second protrusion are inclined in a manner close to either one end side or the other end side in the width direction of the belt member, the support of the protrusion for the recording medium can be stabilized.

[0022] According to the seventh aspect of the present invention, compared with the case where the hole is not surrounded by the protrusion, it is possible to suppress the reduction of the adhesion of the recording medium to the outer peripheral surface of the tape member caused by the protrusion being provided on the outer peripheral surface of the tape member.

[0023] According to the eighth aspect of the present invention, compared with a structure in which no protrusion is provided on the surface of the tape component for transmitting the recording medium, the reliability of cleaning of the tape component for transmitting the recording medium can be improved. Attached Figure Description

[0024] The embodiments of the present invention will be described in detail with reference to the following figures.

[0025] Figure 1 This is a diagram showing an image forming apparatus;

[0026] Figure 2 From Figure 1 The diagram shows the paper conveying device when viewed in the direction indicated by arrow II.

[0027] Figure 3 From Figure 1 The diagram showing the direction indicated by arrow III when observing the belt component;

[0028] Figure 4 It is a magnified view showing a hole and its surrounding area;

[0029] Figure 5 It means Figure 4 A diagram showing the state of the cross-section of the component along the VV line;

[0030] Figure 6 This is a graph showing the experimental results related to uneven gloss;

[0031] Figure 7 middle, Figure 7 (A) Figure 7 (E) is a graph showing the results of an experiment relating the area of ​​the hole to the area of ​​the protrusion;

[0032] Figure 8 This is a diagram showing another structural example with components;

[0033] Figure 9 middle, Figure 9 (A) Figure 9 (B) is an enlarged view of the paper conveying device;

[0034] Figure 10 It means Figure 9 A diagram showing the state of the cross section on line XX of (A);

[0035] Figure 11 middle, Figure 11 (A) Figure 11 (B) is a diagram showing an example of another shape of the protrusion;

[0036] Figure 12 This is a diagram showing another structural example with components.

[0037] Symbol Explanation

[0038] 60-Fixing device, 100-Image forming device, 120-Image forming unit, 500-Paper conveying device, 510-Belt component, 510A-Outer peripheral surface, 510B-Inner peripheral surface, 513-Removal component, 514-Driven rotating component, 515-Driven rotating component, 521-Protrusion, 521A-First protrusion, 521B-Second protrusion, 522-Hole, P-Paper. Detailed Implementation

[0039] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0040] Figure 1 This is a diagram illustrating the image forming apparatus 100 according to this embodiment.

[0041] The image forming apparatus 100 is provided with an image forming unit 120, which forms an image on a piece of paper P, which is an example of a recording medium.

[0042] The image forming unit 120 is provided with a plurality of image forming units 200, which form images that are transferred onto paper P, which is an example of a recording medium.

[0043] Each image forming unit 200 has a photosensitive drum 11, which serves as an image holder. The image forming unit 200 forms a toner image, which is an image transferred onto paper P, on the photosensitive drum 11.

[0044] The image forming unit 200 uses a dry developer to form a toner image on the photosensitive drum 11. Specifically, the image forming unit 200 uses a powdered dry carrier and a powdered dry toner to form a toner image on the photosensitive drum 11.

[0045] In this example, the carrier has a positive polarity, while the toning agent has a negative polarity.

[0046] In addition, wet developers can also be used, not just dry developers.

[0047] The image forming unit 200 uses different types of toners to form toner images on the photosensitive drum 11.

[0048] In this embodiment, four image forming units 200 are provided: a first image forming unit 200Y, a second image forming unit 200M, a third image forming unit 200C, and a fourth image forming unit 200K.

[0049] In the moving direction of the intermediate transfer belt 15, each image forming unit 200 is provided in the order of the first image forming unit 200Y, the second image forming unit 200M, the third image forming unit 200C, and the fourth image forming unit 200K.

[0050] The first image forming unit 200Y uses a yellow toner to form a toner image. The second image forming unit 200M uses a magenta toner to form a toner image. The third image forming unit 200C uses a blue-green toner to form a toner image.

[0051] The fourth image forming unit 200K uses black toner to form a toner image.

[0052] An intermediate transfer belt 15, serving as an example of an intermediate transfer body, is provided in the image forming apparatus 100. Furthermore, a primary transfer unit 10 is provided in the image forming apparatus 100. Toner images formed by the image forming unit 200 are transferred onto the intermediate transfer belt 15 in the primary transfer unit 10.

[0053] Furthermore, the image forming apparatus 100 is provided with a secondary transfer unit 20. The toner image transferred to the intermediate transfer belt 15 is transferred to the paper P in the secondary transfer unit 20.

[0054] Furthermore, a fixing device 60 is provided in the image forming apparatus 100. The fixing device 60 fixes the toner image transferred onto the paper P onto the paper P.

[0055] Furthermore, a control unit 40 is provided in the image forming apparatus 100. The control unit 40 has a CPU that executes programs and controls various parts within the image forming apparatus 100.

[0056] Furthermore, the image forming apparatus 100 is provided with a display device 45 for displaying information to the user. The display device 45 is composed of a display panel or the like.

[0057] The display device 45 in this embodiment is composed of a touch panel. In addition to displaying information to the user, the display device 45 also receives instructions from the user. The display device 45 can also be understood as a receiving unit that receives instructions from the user.

[0058] A developing apparatus 14 is provided in each image forming unit 200. The developing apparatus 14 applies toner to the surface of the photosensitive drum 11. The developing apparatus 14 uses the toner to make the electrostatic latent image on the photosensitive drum 11 visible.

[0059] Furthermore, each image forming unit 200 is provided with a charging device 12 for charging the photosensitive drum 11. Additionally, each image forming unit 200 is provided with an exposure device 13 for forming an electrostatic latent image on the photosensitive drum 11.

[0060] In each image forming unit 200, the photosensitive drum 11, which serves as an image holder, rotates in the direction of arrow A.

[0061] As an exposure device 13, a laser exposure unit that emits a laser can be cited as an example. Furthermore, as an exposure device 13, an exposure device equipped with multiple LEDs or other light sources can also be cited as an example. Figure 1 In the diagram, the symbol Bm represents the light emitted from the exposure device 13.

[0062] Each image forming unit 200 is provided with a primary transfer roller 16. The location where the primary transfer roller 16 is provided is called the primary transfer section 10.

[0063] The toner image formed on the photosensitive drum 11 is transferred to the intermediate transfer belt 15 in the primary transfer section 10.

[0064] Furthermore, each of the image forming units 200 is provided with a drum cleaner 17 for removing developer residues on the photosensitive drum 11.

[0065] The intermediate transfer belt 15 moves cyclically in the direction of arrow B at a predetermined speed via a drive roller 31 driven by a motor (not shown).

[0066] The primary transfer section 10 is configured to include a primary transfer roller 16, which is positioned opposite the photosensitive drum 11 across the intermediate transfer belt 15.

[0067] The toner image on the photosensitive drum 11 is electrostatically drawn onto the intermediate transfer belt 15 in sequence. As a result, overlapping toner images are formed on the intermediate transfer belt 15.

[0068] The secondary transfer section 20 is provided with a secondary transfer roller 22 and a support roller 25.

[0069] The secondary transfer roller 22 is disposed on the outer surface side of the intermediate transfer belt 15. The support roller 25 is disposed on the inner surface side of the intermediate transfer belt 15.

[0070] In this embodiment, in the secondary transfer unit 20, the toner image transferred to the intermediate transfer belt 15 is transferred onto the paper P conveyed to the secondary transfer unit 20.

[0071] The processing flow performed in the image forming apparatus 100 will be described.

[0072] The image forming apparatus 100 receives image data output from, for example, an image reading device (not shown) or a PC. Then, image processing is performed on the image data within the image forming apparatus 100. This generates image data corresponding to each of the plurality of image forming units 200 provided.

[0073] Specifically, for example, image data in four colors—yellow, magenta, cyan, and black—is generated. The generated image data is output to the exposure device 13 located in the image forming unit 200.

[0074] The exposure device 13 illuminates the photosensitive drum 11 with light emitted from a semiconductor laser, based on the input image data.

[0075] In this embodiment, the surface of each photosensitive drum 11 is charged by the charging device 12. Then, the surface is scanned and exposed by the exposure device 13. As a result, an electrostatic latent image is formed on the surface of the photosensitive drum 11.

[0076] Next, development is performed by the developing apparatus 14, forming a toner image on the photosensitive drum 11. This toner image is then transferred to the intermediate transfer belt 15 in the primary transfer section 10.

[0077] After the toner image is transferred onto the intermediate transfer belt 15, the toner image moves to the secondary transfer section 20. The toner image moves to the secondary transfer section 20 via the cyclically moving intermediate transfer belt 15.

[0078] At this time, the paper P from the first paper receiving section 53 or the second paper receiving section 54 is conveyed to the secondary transfer section 20 by the transfer roller 52, etc.

[0079] Then, the toner image on the intermediate transfer belt 15 is electrostatically transferred onto the paper P in the secondary transfer section 20.

[0080] Then, the paper P, with the toner image transferred on it, moves from the secondary transfer unit 20 to the paper transport device 500. As an example of a recording media transport device, the paper transport device 500 transports the paper P to the fixing device 60.

[0081] The paper P conveyed to the fixing unit 60 is heated by the fixing unit 60. The fixing unit 60 can be understood as a heating device. Furthermore, pressure is applied to the paper P within the fixing unit 60.

[0082] In this embodiment, the toner image on the paper P is fixed onto the paper P by heating and pressurizing it. Then, the paper P is discharged from the image forming apparatus 100.

[0083] The fixing device 60 is provided with a fixing belt 61 that moves in a cycle and a heating source 62 that heats the fixing belt 61. In addition, the fixing device 60 is provided with a pressure roller 63 that presses against the outer peripheral surface of the fixing belt 61.

[0084] In the fixing device 60, the paper P passes between the fixing belt 61 and the pressure roller 63. During this passage, the paper P is heated and pressurized.

[0085] Figure 2 From Figure 1 The diagram shows the paper conveying device 500 viewed in the direction indicated by arrow II.

[0086] The paper conveying device 500 is provided with multiple belt components 510.

[0087] Specifically, four belt components 510 are provided. These four belt components 510 are arranged in a staggered manner in a direction orthogonal to the paper transport direction P.

[0088] In this embodiment, the belt components 510 are each formed in a ring shape. In other words, the belt components 510 are each formed in a ring shape.

[0089] The conveyor belt components 510 move cyclically. Each of the conveyor belt components 510 is flat and has an upper surface 511. In this embodiment, the upper surface 511 moves in the direction indicated by arrow 2A. The direction indicated by arrow 2A is the conveying direction of the paper P.

[0090] In the conveying direction of the paper P based on the belt component 510, a [facility] is provided on the downstream side of the belt component 510. Figure 1 The fixing device 60 shown.

[0091] Furthermore, in this embodiment, a removal member 513 is provided to remove deposits adhering to the outer peripheral surface of the belt member 510. This removal member 513 is configured to contact the outer peripheral surface 510A of the belt member 510. The removal member 513 is composed of a brush.

[0092] The removal component 513 removes any adhering material from the outer peripheral surface 510A of the tape component 510. Examples of adhering materials include paper dust.

[0093] A drive rotation member 514 is provided inside the belt member 510. The drive rotation member 514 rotates, imparting a driving force to the belt member 510 for its movement. The drive rotation member 514 is driven by a motor (not shown) and rotates.

[0094] Furthermore, a driven rotating member 515 is provided inside the belt member 510. The driven rotating member 515 is positioned upstream of the driving rotating member 514 in the paper conveying direction P. The driven rotating member 515 supports the belt member 510 from the inside of the belt member 510.

[0095] The driven rotating member 515 receives a force from the inner circumferential surface 510B of the belt member 510 and rotates driven by the belt member 510. Furthermore, regarding the inner circumferential surface 510B, it is shown in... Figure 1 middle.

[0096] The removal member 513 is pressed against the driven rotating member 515 via the belt member 510. The removal member 513 is subjected to a force from the belt member 510 and rotates. The removal member 513 is driven by the belt member 510 and rotates.

[0097] Holes are provided on each of the belt components 510. Additionally, in... Figure 2 The diagram of the hole is omitted. In this embodiment, air from the outer peripheral surface 510A side of the belt member 510 toward the inner peripheral surface 510B side passes through the hole.

[0098] A suction device 516 is provided on the inner side of the belt component 510. The suction device 516 draws air from the outer peripheral surface 510A side of the belt component 510. As a result, the air on the outer peripheral surface 510A side of the belt component 510 passes through the hole provided in the belt component 510 and moves towards the inner peripheral surface 510B side of the belt component 510.

[0099] Therefore, in this embodiment, the paper P is drawn in by the belt member 510, and the paper P adheres to the outer peripheral surface 510A of the belt member 510.

[0100] The conveyor belt 510 conveys the paper P attached to its outer peripheral surface 510A toward the fixing device 60.

[0101] Figure 3 From Figure 1 The diagram shows the view of component 510 when viewed in the direction indicated by arrow III. In other words, Figure 3 This is the main view of component 510.

[0102] exist Figure 3 The image shows one of the four belt components 510. The other three belt components 510 have the same structure as this one belt component 510.

[0103] The belt component 510 is provided with a protrusion 521 that protrudes from the outer peripheral surface 510A of the belt component 510.

[0104] Multiple protrusions 521 are provided. Each protrusion 521 is arranged in a linear shape. Specifically, each protrusion 521 is arranged in a straight line shape.

[0105] The belt component 510 has a flat upper surface 511 and a flat lower surface 512. Furthermore, regarding the lower surface 512, it is shown in... Figure 1 middle.

[0106] In this embodiment, by Figure 2The two rotating components, drive rotating component 514 and driven rotating component 515, apply tension to the belt component 510. As a result, the belt component 510 in this embodiment is provided with a flat upper surface 511 and a flat lower surface 512.

[0107] On the upper surface 511, as Figure 3 As shown, the protrusions 521 are each arranged in a straight line. In this embodiment, the protrusions 521 move along with the belt member 510.

[0108] When the protrusion 521 that is moving is located on the upper surface 511, the protrusion 521 is respectively arranged in a straight line shape.

[0109] The protrusions 521 are each arranged in an inclined state relative to the belt movement direction, which is the movement direction of the belt member 510.

[0110] In this embodiment, as a protrusion 521, a first protrusion 521A and a second protrusion 521B are provided, which have different tilt angles relative to the moving direction of the belt member 510.

[0111] In this embodiment, the tilt angle θ1 of the first protrusion 521A relative to the moving direction of the belt member 510 is +45°. Furthermore, the tilt angle θ2 of the second protrusion 521B relative to the moving direction of the belt member 510 is -45°.

[0112] In this embodiment, the first protrusion 521A and the second protrusion 521B are orthogonal.

[0113] Furthermore, the tilt angle of the first protrusion 521A is not limited to +45°; it can also be +30° or +60°. The tilt angle of the first protrusion 521A can be set to an angle other than +45°.

[0114] Furthermore, the tilt angle of the second protrusion 521B is not limited to -45°; it can also be -30° or -60°. The tilt angle of the second protrusion 521B can be set to an angle other than -45°.

[0115] Furthermore, the tilt angle of the first protrusion 521A can be different from the tilt angle of the second protrusion 521B.

[0116] Multiple first protrusions 521A are provided and are configured to extend in a common direction. The multiple first protrusions 521A extend in the direction indicated by arrow 3A, which is the common direction.

[0117] Multiple first protrusions 521A are arranged in a parallel manner. With the first protrusions 521A located on the upper surface 511, the multiple first protrusions 521A are arranged in a parallel manner.

[0118] Furthermore, the first protrusion 521A is inclined in a manner close to one end 510C in the width direction of the belt member 510, on the downstream side in the conveying direction toward the paper P.

[0119] Multiple second protrusions 521B are also provided. The second protrusions 521B are configured to extend in a direction different from the extension direction of the first protrusions 521A.

[0120] Furthermore, the plurality of second protrusions 521B are configured to extend in a common direction. The plurality of second protrusions 521B are configured to extend in the direction indicated by the arrow 3B, which is the common direction.

[0121] Multiple second protrusions 521B are arranged in a parallel manner. With the second protrusions 521B located on the upper surface 511, the multiple second protrusions 521B are arranged in a parallel manner.

[0122] The second protrusion 521B is inclined in a manner close to the other end 510D side in the width direction of the belt member 510, on the downstream side in the conveying direction toward the paper P.

[0123] In this embodiment, multiple first protrusions 521A and second protrusions 521B with different extending directions are provided. Therefore, in this embodiment, a grid-like protrusion 521 is provided on the outer peripheral surface 510A of the belt member 510. In other words, in this embodiment, the multiple protrusions 521 are arranged in a grid shape.

[0124] Furthermore, in this embodiment, a hole 522 is provided in the belt member 510. Air from the outer peripheral surface 510A side of the belt member 510 toward the inner peripheral surface 510B side passes through this hole 522.

[0125] In this embodiment, the plurality of holes 522 are arranged in a manner that follows the belt movement direction. Furthermore, the plurality of holes 522 are arranged in a manner that follows the width direction of the belt member 510.

[0126] The hole 522 is a circular hole. Furthermore, the shape of the hole 522 is not particularly limited. Alternatively, the hole 522 can be elliptical or polygonal.

[0127] The first protrusion 521A and the second protrusion 521B can be set in a state that is not tilted relative to the direction of belt movement.

[0128] For example, one of the first protrusion 521A and the second protrusion 521B may be arranged in a state along the belt movement direction. Furthermore, the other protrusion 521 may be arranged in a state along a direction orthogonal to the belt movement direction.

[0129] In addition, at this time, multiple protrusions 521 are also set in a grid-like form.

[0130] Figure 4 This is an enlarged view showing a hole 522 and its surrounding area.

[0131] In this embodiment, the protrusion 521 is configured to surround the hole 522.

[0132] In this embodiment, the hole 522 is surrounded by a plurality of protrusions 521 arranged in a grid shape, the protrusions 521 located around the hole 522.

[0133] Specifically, in this embodiment, the hole 522 is surrounded by the portion represented by symbol 4A, symbol 4B, symbol 4C, and symbol 4D in the protrusion 521.

[0134] The part represented by symbol 4A is a part of one of the first protrusions 521A represented by symbol 10A, which is included in the plurality of first protrusions 521A.

[0135] The part represented by symbol 4B is a part of another first protrusion 521A represented by symbol 10B, which is disposed on the opposite side of the first protrusion 521A through the hole 522.

[0136] The part represented by symbol 4C is a part of one of the second protrusions 521B represented by symbol 10C, which is included in the plurality of second protrusions 521B.

[0137] The part represented by symbol 4D is part of another second protrusion 521B represented by symbol 10D, which is disposed on the opposite side of the first second protrusion 521B across the hole 522.

[0138] The first protrusion 521A and the second protrusion 521B each have an intersection portion 88 that intersects with another protrusion 521.

[0139] The portion represented by symbol 4A is the part between the two intersecting portions 88 of a first protrusion 521A represented by symbol 10A.

[0140] The part represented by symbol 4B is the portion located between the two intersecting portions 88 of the other first protrusion 521A represented by symbol 10B.

[0141] The part represented by symbol 4C is the portion located between the two intersecting portions 88 of a second protrusion 521B represented by symbol 10C.

[0142] The part represented by symbol 4D is the portion between the two intersecting portions 88 of the other second protrusion 521B represented by symbol 10D.

[0143] In this embodiment, the hole 522 is surrounded by the protrusion 521, thereby ensuring the adhesion of the paper P to the tape member 510.

[0144] Here, for example, suppose that a plurality of cylindrical protrusions, which are in a mutually separated state, are provided on the outer peripheral surface 510A of the belt component 510 as protrusions 521. In this case, air can move between these protrusions.

[0145] At this time, air entering the gap between the paper P and the belt member 510 moves between the protrusions and toward the hole 522. At this time, the suction force of the paper P decreases, and the adhesion of the paper P to the belt member 510 decreases.

[0146] In contrast, in this embodiment, the hole 522 is surrounded by the protrusion 521. In this case, air outside the gap between the paper P and the tape member 510 is less likely to flow towards the hole 522.

[0147] At this time, compared with the structure where the hole 522 is not surrounded by the protrusion 521, the adhesion of the paper P to the tape member 510 increases.

[0148] Figure 5 It means Figure 4 A diagram showing the cross-sectional state of component 510 along the VV line. Figure 5 The image shows the cross-section of the band member 510 on a surface orthogonal to the extending direction of the first protrusion 521A.

[0149] Furthermore, in this embodiment, the cross-sectional shape of the first protrusion 521A is the same as the cross-sectional shape of the second protrusion 521B. Also, in this embodiment, the distance between adjacent first protrusions 521A is equal to the distance between adjacent second protrusions 521B.

[0150] In this embodiment, the width W of the protrusion 521 is within 1.5 mm.

[0151] In this embodiment, as described above, the protrusion 521 is provided in a linear shape. In a direction orthogonal to the extending direction of the linearly extending protrusion 521, the width W of the protrusion 521 is within 1.5 mm.

[0152] Therefore, it is less likely that defects will occur due to the heating of the paper P by the conveyor component 510. Specifically, it is less likely that uneven gloss will occur due to the heating of the paper P by the conveyor component 510.

[0153] In this embodiment, such as Figure 1 As shown, the belt member 510 of the paper conveying device 500 is located opposite a portion 61A of the fixing belt 61 provided in the fixing device 60. At this time, the belt member 510 is heated by heat from the fixing device 60.

[0154] If the belt component 510 is heated, then the paper P is heated by the belt component 510 when it is conveyed through the belt component 510.

[0155] If a hole 522 is provided in the tape component 510 at this time, uneven heating of the paper P will occur. Consequently, uneven gloss will appear in the image on the paper P due to the heating difference.

[0156] In this embodiment, a portion opposite to the hole 522 and not in contact with the tape member 510 is formed on the paper P, and a portion in contact with the tape member 510 is formed.

[0157] At this point, the degree of heating differs between the opposing portions of the holes and the contact portions. This can easily lead to uneven gloss in the image on the paper P.

[0158] In contrast, as in this embodiment, if a linear protrusion 521 is provided on the belt member 510, the area of ​​the belt contact portion is reduced, and uneven gloss becomes less noticeable.

[0159] Furthermore, if the width W of the protrusion 521 is within 1.5 mm, the area of ​​the contact portion is further reduced, and uneven gloss becomes less noticeable.

[0160] Figure 6 This is a graph showing the experimental results related to uneven gloss.

[0161] In an experiment related to uneven gloss, various strip components 510 with different widths W of the protrusions 521 and different spacings of the protrusions 521 were prepared. Then, the degree of uneven gloss was examined for each strip component 510.

[0162] As a result, in this embodiment, when the width W of the protrusion 521 is within 1.5 mm, the uneven gloss becomes less noticeable in a portion of the strip component 510.

[0163] If the width W of the protrusion 521 becomes 2.0 mm, uneven gloss becomes more noticeable in all types of belt components 510.

[0164] Here, the spacing between the protrusions 521 refers to, in Figure 5 The distance represented by symbol 5A. The spacing between protrusions 521 refers to the distance between protrusions 521 that are parallel to each other and adjacent to each other. In other words, the spacing between protrusions 521 refers to the distance between protrusions 521 that extend in a common direction and are adjacent to each other.

[0165] More specifically, the spacing between protrusions 521 refers to the distance between the end 521E of one protrusion 521 in the width direction and the end 521F of another protrusion 521 located next to that one protrusion 521 in the width direction.

[0166] "End 521E in the width direction of one protrusion 521" refers to the end located on the side near the other protrusion 521. And "End 521F in the width direction of the other protrusion 521" refers to the end located on the side near one protrusion 521.

[0167] In this embodiment, such as Figure 6 As shown, if the width W of the protrusion 521 is within 1.5mm and the spacing is more than 1.2mm, then under any conditions, uneven gloss will not be easily noticeable.

[0168] If the spacing is small, the protrusions 521 are densely arranged, and the area of ​​the contact portion mentioned above actually increases. At this time, uneven gloss becomes more easily noticeable.

[0169] In contrast, if the spacing is large, the protrusions 521 are arranged sparsely. In this case, the area of ​​the contact portion is reduced, and uneven gloss becomes less noticeable.

[0170] Furthermore, for example, it is preferable to set the spacing between adjacent protrusions 521 to a value obtained by multiplying the width W of the protrusion 521 by 0.8 or higher.

[0171] For example, if the width W of the protrusion 521 is 0.6 mm, the value obtained by multiplying the width W of the protrusion 521 by 0.8 becomes 0.48 mm.

[0172] In this embodiment, such as Figure 6 As indicated by symbol 6A, in the strip member 510 where the width W of the protrusion 521 is 0.6 mm and the spacing is 0.48 mm or more, the uneven gloss becomes less noticeable.

[0173] Furthermore, for example, if the width W of the protrusion 521 is 1.0 mm, the value obtained by multiplying the width W of the protrusion 521 by 0.8 becomes 0.8 mm.

[0174] In this embodiment, as indicated by symbol 6B, in the strip member 510 where the width W of the protrusion 521 is 1.0 mm and the spacing is 0.8 mm or more, the uneven gloss becomes less noticeable.

[0175] Furthermore, for example, if the width W of the protrusion 521 is 1.5 mm, the value obtained by multiplying the width W of the protrusion 521 by 0.8 becomes 1.2 mm.

[0176] In this embodiment, as indicated by symbol 6C, in the strip member 510 where the width W of the protrusion 521 is 1.5 mm and the spacing is 1.2 mm or more, the uneven gloss becomes less noticeable.

[0177] Based on the above results, in this embodiment, it is preferable to satisfy at least one of the following three conditions: condition 1 to condition 3.

[0178] Alternatively, it is preferable to satisfy two conditions. For example, it is even more preferable to satisfy all three conditions.

[0179] Condition 1: The width W of the protrusion 521 shall be within 1.5mm.

[0180] Condition 2: Set the spacing between adjacent protrusions 521 to 1.2mm or more.

[0181] Condition 3: Set the spacing between adjacent protrusions 521 to a value obtained by multiplying the width W of the protrusion 521 by 0.8 or higher.

[0182] Next, the relationship between the area of ​​the hole 522 and the protrusion 521 will be explained.

[0183] In this embodiment, as described above, a plurality of protrusions 521 are provided. Moreover, the plurality of protrusions 521 are configured in a grid shape. Furthermore, the hole portion 522 is surrounded by the protrusions 521 located around the hole portion 522 among the plurality of protrusions 521 configured in a grid shape.

[0184] In this embodiment, the protrusion 521 is configured in a grid shape, such as... Figure 4 As shown by the symbol 4F, the outer peripheral surface 510A is provided with a plurality of rectangular protrusions 528.

[0185] Multiple rectangular protrusions 528 are adjacent to each other. Furthermore, each of the multiple rectangular protrusions 528 is arranged in such a way that it contacts other rectangular protrusions 528 located next to it.

[0186] In other words, a rectangular protrusion 528 shares the portion located between the intersections 88 with other rectangular protrusions 528 located next to it.

[0187] exist Figure 4 In this context, the parts represented by symbol 4G become the portions located between the intersections 88. Figure 4 In the middle, the rectangular protrusion 528 represented by symbol 4F shares the parts represented by symbol 4G between the four other rectangular protrusions 528 located around the rectangular protrusion 528.

[0188] In this embodiment, the experimental results, for example, have shown that it is preferable to set the area of ​​the region surrounded by a rectangular protrusion 528 to be more than 5% and less than 80% of the area of ​​the hole 522.

[0189] The area of ​​the region enclosed by the rectangular protrusion 528 refers to, Figure 4 The symbol 4H represents the area inside the rectangle.

[0190] In detail, the area surrounded by the rectangular protrusion 528 refers to the area surrounded by a line along the extension direction of the protrusion 521 and through the center portion in the width direction of the protrusion 521.

[0191] For example, it is preferable to set this area to be more than 5% and less than 80% of the area of ​​the hole 522.

[0192] Hereinafter, in this specification, the area of ​​the region surrounded by the rectangular protrusion 528 will be referred to as the "protrusion area".

[0193] Figure 7 middle, Figure 7 (A) Figure 7 (E) is a graph showing the experimental results related to the relationship between the area of ​​the hole 522 and the area of ​​the protrusion.

[0194] In addition, Figure 7 (A) Figure 7 In (E), the belt component 510 is shown tilted at 45°. Figure 7 In each of them, Figure 7 The direction indicated by arrow 7X in (A) represents the direction of movement of component 510.

[0195] Figure 7(A) represents the experimental results under the condition that the area of ​​the protrusion is 1.3% of the area of ​​the hole 522.

[0196] exist Figure 7 In (A), the diameter of the hole 522 is 4 mm. Furthermore, in Figure 7 In (A), the length 521L of one side of the rectangular protrusion 528 is 0.4 mm.

[0197] Under this condition, the multiple rectangular protrusions 528 are arranged densely. In other words, under this condition, the protrusions 521 are arranged densely.

[0198] At this point, the area of ​​the contact portion described above becomes larger. Consequently, uneven gloss becomes more noticeable.

[0199] In addition, Figure 7 Under the conditions shown in (A), the adhesion of paper P to tape component 510 can be ensured.

[0200] In this embodiment, as described later, the adhesion of the paper P to the tape member 510 is sometimes reduced by providing the protrusion 521. In contrast, Figure 7 Under the conditions shown in (A), the adhesion is not easily reduced.

[0201] Next, regarding Figure 7 (E) will be explained.

[0202] exist Figure 7 In (E), experimental results are shown under the condition that the area of ​​the protrusion is 110% of the area of ​​the hole 522. Figure 7 In (E), the diameter of the hole 522 is 4 mm, and the length 521L of one side of the rectangular protrusion 528 is 3.72 mm.

[0203] At this time, the multiple rectangular protrusions 528 are arranged sparsely. In other words, the protrusions 521 are arranged sparsely.

[0204] At this point, the area of ​​the part of the protrusion 521 that contacts the paper P becomes smaller. In other words, the area of ​​the contact portion becomes smaller. Therefore, the resulting uneven gloss becomes less noticeable.

[0205] On the other hand, at this time, the adhesion of paper P to the tape component 510 decreases.

[0206] exist Figure 7 In (E), as shown by arrows 1Y to 6Y, multiple rectangular protrusions 528 are provided, each with its internal air facing the orifice 522.

[0207] In the rectangular protrusion 528, the protrusion 528 with a hole 522 embedded inside itself becomes a form in which air is sucked out from the protrusion 528.

[0208] At this point, the suction force acting on the paper P and per unit area decreases. At this point, the adhesion of the paper P to the belt component 510 decreases.

[0209] exist Figure 7 In the structural example shown in (E), the rectangular protrusions 528 are each large in size. At this time, the suction force acting on the paper P and per unit area decreases.

[0210] As a result, in Figure 7 In the structural example shown in (E), the adhesion of paper P to tape component 510 is reduced.

[0211] like Figure 7 As shown in (E), it is clear that if the area of ​​the protrusion is 110% of the area of ​​the hole 522, the adhesion of the paper P to the tape component 510 is reduced.

[0212] In contrast, Figure 7 Under the conditions shown in (A), the area of ​​a rectangular protrusion 528 is small, and the volume of the internal space of the rectangular protrusion 528 is small.

[0213] At this time, the amount of air drawn out from the interior of each of the rectangular protrusions 528 decreases. The amount of air drawn out from the interior of each of the rectangular protrusions 528 in the state of being inserted into the hole 522 decreases.

[0214] As a result, in Figure 7 Under the conditions shown in (A), the decrease in suction force acting on paper P and per unit area can be suppressed. At this time, the decrease in adhesion of paper P to the belt component 510 can be suppressed.

[0215] Figure 7 (B) represents the experimental results under the condition that the area of ​​the protrusion is 5% of the area of ​​the hole 522. Figure 7 (C) represents the experimental results under the condition that the area of ​​the protrusion is 26% of the area of ​​the hole 522. Figure 7 (D) represents the experimental results under the condition that the area of ​​the protrusion is 80% of the area of ​​the hole 522.

[0216] In addition, Figure 7 (B) Figure 7 In (D), the diameter of the hole 522 is 4mm.

[0217] Furthermore, in Figure 7In (B), the length 521L of one side of the rectangular protrusion 528 is 0.8 mm. Figure 7 In (C), the length 521L of one side of the rectangular protrusion 528 is 1.8 mm. Furthermore, in Figure 7 In (D), the length 521L of one side of the rectangular protrusion 528 is 3.17mm.

[0218] In each of these three conditions, the multiple rectangular protrusions 528 are arranged in a sparse state. In other words, the protrusions 521 are arranged in a sparse state.

[0219] In each of these three conditions, the area of ​​the contact portion decreases. At this point, uneven gloss becomes less noticeable.

[0220] Furthermore, in each of these three conditions, the volume of the internal space of the rectangular protrusion 528 is small. In each of these three conditions, the reduction in the adhesion of the paper P to the tape component 510 can be suppressed.

[0221] Figure 8 This is a diagram showing another structural example with component 510.

[0222] In this structural example, similarly to the above, a plurality of rectangular protrusions 528 are provided on the outer peripheral surface 510A of the belt component 510.

[0223] The rectangular protrusion 528 becomes annular, and in this structural example, it can also be said that multiple annular protrusions 521 are provided.

[0224] Furthermore, in this structural example, a hole 522 is provided, similar to that described above.

[0225] exist Figure 8 In the example structure shown, the area of ​​the hole 522 is smaller than the area of ​​the region surrounded by an annular protrusion 521.

[0226] exist Figure 8 In the example structure shown, the protrusion 521 is also configured in a grid shape, similar to the above.

[0227] In this structural example, the diameter of the hole 522 is smaller than the distance 521Y between adjacent protrusions 521.

[0228] The protrusions 521 that are adjacent to each other extend in a common direction. In this structural example, the diameter of the hole 522 is smaller than the distance 521Y between the protrusions 521 that extend in a common direction and are adjacent to each other.

[0229] In this structural example, the reduction in the adhesion of the paper P to the tape component 510 can also be suppressed.

[0230] In this structural example, the air inside an annular protrusion 521 faces a hole 522. As described above, compared to the case where the air inside multiple protrusions 521 faces a single hole 522, the reduction in the adhesion of the paper P to the tape member 510 can be suppressed.

[0231] Furthermore, it is assumed that during the manufacturing stage of the belt component 510, the positional relationship between the hole 522 and the protrusion 521 is not controlled and the hole 522 and the protrusion 521 are provided.

[0232] At this time, it is also possible that a hole 522 is embedded in the inner region of each of the multiple annular protrusions 521. In this case, the internal air of each of the multiple annular protrusions 521 is directed toward the hole 522.

[0233] However, even in this case, another portion of the multiple holes 522 is also located inside the annular protrusion 521. At this time, the suction force of the paper P increases at the location where this other portion of the holes 522 is located.

[0234] Figure 9 middle, Figure 9 (A) Figure 9 (B) is an enlarged view of the paper conveying device 500.

[0235] exist Figure 9 (A) Figure 9 In (B), the state of the paper conveyor 500 as viewed from the side is shown. Furthermore, in Figure 9 (A) Figure 9 In (B), a simplified display of the paper conveying device 500 is shown. Furthermore, in... Figure 9 (A) Figure 9 In (B), the illustration of the protrusion 521 described above is omitted.

[0236] Figure 9 (A) is a diagram representing the paper conveying device 500 described above. Figure 9 (B) is a diagram showing another structural example of the paper conveying device 500.

[0237] As mentioned above, and, as Figure 9 As shown in (A), the belt member 510 is configured in a flat shape and has an upper surface 511 and a lower surface 512. In this embodiment, the belt member 510 moves cyclically in the direction indicated by arrow 9A, with the upper surface 511 moving in that direction.

[0238] Furthermore, in this embodiment, as described above, a removal member 513 is provided to remove attachments that adhere to the outer peripheral surface 510A of the belt member 510.

[0239] The removal component 513 is configured to contact the outer peripheral surface 510A of the belt component 510. The removal component 513 is composed of a brush.

[0240] A driven rotating member 515 is provided inside the conveyor component 510. The driven rotating member 515 is positioned upstream of the driving rotating member 514 in the conveying direction of the paper P.

[0241] The driven rotating member 515 is subjected to a force from the inner circumferential surface 510B of the belt member 510 and rotates driven by the belt member 510.

[0242] The removal member 513 is pressed against the driven rotating member 515 via the belt member 510. The removal member 513 contacts the outer peripheral surface 510A of the belt member 510. The removal member 513 is subjected to a force from the belt member 510 and rotates.

[0243] In this embodiment, in the conveying direction of the paper P based on the belt member 510, a [device / fabricator] is provided on the downstream side of the belt member 510. Figure 1 The fixing device 60 shown.

[0244] The removal component 513 contacts the portion 510H of the belt component 510 located on the side opposite to the fixing device 60.

[0245] The belt component 510 has a portion 510T located on the side of the fixing device 60 and a portion 510H located on the side opposite to the fixing device 60.

[0246] Remove part 513 into contact with part 510H located on the opposite side.

[0247] The conveyor belt 510 has an end 510S and another end 510V located at different positions in the conveying direction of the paper P. One end 510S is located on the side of the fixing device 60, and the other end 510V is located on the side opposite to the fixing device 60.

[0248] The removal component 513 is disposed at the other end 510V side of the component 510.

[0249] Furthermore, the removal component 513 is pressed against the driven rotating component 515 via the belt component 510.

[0250] Here, let's assume that... Figure 9 As shown in (B), the removal component 513 is provided on the fixing device 60 side.

[0251] At this time, heat from the fixing device 60 easily acts on the removal member 513. If heat from the fixing device 60 acts on the removal member 513, the removed material adhering to the removal member 513 easily adheres to the removal member 513.

[0252] The material removed from the tape component 510 adheres to the removal component 513. If the removal component 513 is located on the fixing device 60 side, the material is likely to adhere to the removal component 513.

[0253] In contrast, such as Figure 9 As shown in (A), if the removal component 513 is located on the side opposite to the fixing device 60, the adhesion is less likely to occur.

[0254] In this embodiment, such as Figure 9 As shown in (A), a drive rotation member 514 with the function of a belt delivery member 510 is provided on the fixing device 60 side.

[0255] Therefore, on the fixing device 60 side, compared with the side where the driven rotating member 515 is provided, the belt member 510 is less likely to become loose.

[0256] If the removal component 513 is disposed on the fixing device 60 side, the removal component 513 can come into contact with the belt component 510 which is in a state of low slack. At this time, uneven cleaning is reduced.

[0257] However, as described above, the material to be removed from the removal member 513 tends to adhere to the removal member 513. Therefore, in this embodiment, as described above, the removal member 513 is disposed on the side opposite to the fixing device 60 side.

[0258] In this embodiment, the removal component 513 is disposed on the side opposite to the fixing device 60, but uneven cleaning is less likely to occur.

[0259] In this embodiment, as described above, a protrusion 521 is provided on the outer peripheral surface 510A of the belt component 510. In this embodiment, the protrusion 521 makes it less likely for uneven cleaning to occur.

[0260] In a structure without the protrusion 521, the entire surface of the component 510 needs to be cleaned. This can easily lead to uneven cleaning.

[0261] In contrast, in this embodiment, the protrusion 521 becomes the object to be cleaned, and the area to be cleaned is smaller. Therefore, compared to the case where the entire surface of the component 510 needs to be cleaned, uneven cleaning is less likely to occur.

[0262] Figure 10 It means Figure 9 A diagram showing the state of the cross-section along line XX of (A). Additionally, in Figure 10 The driven rotating component 515 is omitted from the illustration.

[0263] If a protrusion 521 is provided on the belt component 510, the fibers 513S constituting the removal component 513 including the brush will contact the top of the protrusion 521.

[0264] Furthermore, the fibers 513S constituting the brush sometimes move in the direction indicated by arrow 10X. The fibers 513S sometimes also move from the root side of the protrusion 521 toward the top side of the protrusion 521.

[0265] At this time, the adhering material attached to the belt component 510 can be easily separated from the belt component 510 and can be easily removed from the belt component 510.

[0266] If a protrusion 521 is provided in the belt component 510, the contact area between the belt component 510 and the paper P, which is the main cause of dirt, is reduced, and the cleaning area itself is reduced.

[0267] If the protrusion 521 is provided, less dirt adheres to the belt component 510. In this case, uneven cleaning is less likely to occur compared to the case where more dirt adheres to the belt component 510.

[0268] Furthermore, if the protrusion 521 is provided, the load acting on the removal member 513 is reduced compared to the case where the protrusion 521 is not provided. In this case, the lifespan of the removal member 513 is extended.

[0269] Assuming the protrusion 521 is not provided, and the entire surface of the belt component 510 needs to be cleaned, the area of ​​the part of the removal component 513 where the pressure from the belt component 510 is applied becomes larger. In this case, the removal component 513 is prone to deterioration.

[0270] In contrast, if the protrusion 521 is provided, the load acting on the removal member 513 is reduced compared to the case where the protrusion 521 is not provided. In this case, the lifespan of the removal member 513 is extended.

[0271] Furthermore, if the protrusion 521 is provided as in this embodiment, the removal member 513 can be separated from the belt member 510 and provided, compared to the case where the protrusion 521 is not provided.

[0272] If the protrusion 521 is provided, the removal member 513 only needs to contact the protrusion 521, thus allowing the removal member 513 to be separated from the belt member 510. In this case, the contact pressure between the removal member 513 and the belt member 510 is reduced, and the lifespan of the removal member 513 is extended.

[0273] Furthermore, as in this embodiment, if the protrusion 521 is arranged in a state of inclination relative to the direction of belt movement, the contact time between the protrusion 521 and the removal member 513 becomes longer.

[0274] Assume that the protrusion 521 is arranged along the belt movement direction or in a direction orthogonal to the belt movement direction. In this case, the contact time between the protrusion 521 and the component 513 is shortened.

[0275] In contrast, in this embodiment, the protrusion 521 is arranged in an inclined state. In this case, the contact time between the protrusion 521 and the removal component 513 is longer. Therefore, the reliability of removing the attached material by the removal component 513 is further improved.

[0276] In addition, it is not ruled out that the removal component 513 may be located on the fixing device 60 side.

[0277] For example, it is preferred to place the removal component 513 on the opposite side as described above, but the removal component 513 may also be placed on the fixing device 60 side.

[0278] For example, in an image forming apparatus 100 where the temperature of the fixing device 60 is low, the removal member 513 can be provided on the fixing device 60 side. Furthermore, for example, if a member is provided to shield heat from the fixing device 60 toward the paper transport device 500, the removal member 513 can also be provided on the fixing device 60 side.

[0279] 〔other〕

[0280] In the above description, an example is given where a paper conveying device 500 is provided upstream of the fixing device 60 in the paper conveying direction P.

[0281] However, it is not limited to this; the paper conveying device 500 can also be installed further downstream than the fixing device 60. In this case, the paper P that has passed through the fixing device 60 is conveyed downstream by the paper conveying device 500.

[0282] Alternatively, the paper conveying device 500 may be installed on both the upstream side and the downstream side of the fixing device 60.

[0283] In a structure in which the paper conveying device 500 is located downstream of the fixing device 60, the fixing device 60 is located upstream of the paper P based on the belt member 510 in the conveying direction of the paper P.

[0284] Even when the paper transport device 500 is located downstream of the fixing device 60, the paper transport device 500 may be affected by the heat of the fixing device 60, just as described above.

[0285] At this time, as described above, if a protrusion 521 is provided on the belt component 510, the occurrence of the aforementioned adverse conditions caused by the heat can be suppressed.

[0286] Furthermore, if the paper conveying device 500 is provided further downstream than the fixing device 60, then, similarly as described above, it is preferable, for example, to provide the removal member 513 on the side opposite to the fixing device 60.

[0287] Figure 11 middle, Figure 11 (A) Figure 11 Figure (B) is an example of another shape for the protrusion 521. Figure 11 The image shows the state of the cross-section of the protrusion 521 on a surface orthogonal to the extension direction of the protrusion 521.

[0288] like Figure 11 As shown in (A), the cross-sectional shape of the protrusion 521 can be set as a triangle, such as... Figure 11 As shown in (B), it can also be set as a trapezoid.

[0289] In the above, Figure 5 The cross-sectional shape of the protrusion 521 is shown in the figure. Figure 5 In the middle, the cross-sectional shape of the protrusion 521 becomes rectangular.

[0290] Not limited to this, such as Figure 11 (A) Figure 11 As shown in (B), the cross-sectional shape of the protrusion 521 can also be set as a triangle, or it can be set as a trapezoid.

[0291] As described above, the width W of the protrusion 521 is preferably set to within 1.5 mm, for example. Furthermore, the spacing between adjacent protrusions 521 is preferably set to 1.2 mm or more, for example.

[0292] Furthermore, as described above, it is preferable, for example, to set the spacing between the protrusions 521 to a value obtained by multiplying the width W of the protrusions 521 by 0.8 or higher.

[0293] For example Figure 11 The case where the cross-sectional shape of the protrusion 521 shown in (A) is triangular will be explained.

[0294] In this specification, the distance between the top and the root of the triangular protrusion 521 will be referred to as the total length 521Z. Furthermore, the portion of the protrusion 521 located at 1 / 4 of the total length 521Z from the top to the root will be referred to as the midpoint 521K.

[0295] Furthermore, suppose a hypothetical line segment 521S passes through the intermediate portion 521K and extends along the width direction of the protrusion 521. This line segment 521S has two ends S11: one end S1 and the other end S2.

[0296] When the cross-sectional shape of the protrusion 521 is triangular, for example, it is preferable to set the width W of the protrusion 521 at the intermediate portion 521K to within 1.5 mm. In other words, for example, it is preferable to set the length of the line segment 521S passing through the intermediate portion 521K to within 1.5 mm.

[0297] When the cross-sectional shape of the protrusion 521 is triangular, the portion of the protrusion 521 located on the top side, which is closer to the middle portion 521K, is more likely to come into contact with the paper P.

[0298] If the width W of the protrusion 521 at the midpoint 521K is set to within 1.5mm, then, as mentioned above, uneven gloss is less likely to occur.

[0299] When the cross-sectional shape of the protrusion 521 is triangular, it is also preferable, for example, to set the spacing between the protrusions 521 to be 1.2 mm or more, similar to the above.

[0300] Furthermore, when the cross-sectional shape of the protrusion 521 is triangular, it is also preferable, for example, to set the spacing between the protrusions 521 to a value obtained by multiplying the width W of the protrusion 521 by 0.8 or higher.

[0301] Here, when the cross-sectional shape of the protrusion 521 is triangular, the spacing between the protrusions 521 refers to the distance L11. The distance L11 is the distance between the line segments 521S corresponding to each protrusion 521.

[0302] In detail, the spacing here refers to the distance between the end S11 of a line segment 521S corresponding to a protrusion 521 and the end S11 of another line segment 521S corresponding to another protrusion 521 located next to the protrusion 521.

[0303] When the cross-sectional shape of the protrusion 521 is triangular, it is preferable, for example, to set the spacing between the line segments 521S to 1.2 mm or more.

[0304] Furthermore, when the cross-sectional shape of the protrusion 521 is triangular, it is preferable, for example, to set the spacing between the line segments 521S to a value obtained by multiplying the width W of the protrusion 521 by 0.8 or higher. Here, the width W of the protrusion 521 refers to the width at the midpoint 521K. In other words, here, the width W of the protrusion 521 refers to the length of the line segment 521S.

[0305] Furthermore, in cases such as Figure 9 When the cross-sectional shape of the protrusion 521 shown in (B) is trapezoidal, it is preferable to set the width W at the location of the upper surface 521J to be, for example, within 1.5 mm.

[0306] Furthermore, when the cross-sectional shape of the protrusion 521 is trapezoidal, it is preferable, for example, to set the spacing between the protrusions 521 to be 1.2 mm or more.

[0307] Furthermore, it is preferable, for example, to set the spacing to a value obtained by multiplying the width W of the protrusion 521 by 0.8 or higher. Additionally, the width W here refers to the width of the protrusion 521 at the location of the upper surface 521J.

[0308] When the cross-sectional shape of the protrusion 521 is trapezoidal, the spacing between the protrusions 521 refers to the distance between the upper surfaces 521J of the protrusions 521 that are adjacent to each other.

[0309] In detail, the spacing between the protrusions 521 refers to the distance between the ends 521M of the upper surface 521J.

[0310] The upper surface 521J has two ends 521M that are located at different positions in the width direction of the protrusions 521. The distance between the protrusions 521 refers to the distance between the ends 521M of the upper surface 521J.

[0311] Figure 12 This is a diagram showing another structural example with component 510. Figure 12 The state of a portion of the belt component 510 as viewed from the front is shown.

[0312] In this structural example, multiple independent annular protrusions 521 are provided. Each protrusion 521 is circular.

[0313] Furthermore, in this structural example, a hole 522 is provided on the inner side of the protrusion 521.

[0314] In this structural example, the area of ​​the hole 522 is smaller than the area of ​​the region surrounded by a protrusion 521. Furthermore, the protrusion 521 is not limited to a circle; it can also be elliptical or rectangular.

[0315] As described above, the protrusion 521 is not limited to being configured in a grille shape, such as Figure 12 As shown, multiple annular protrusions 521 can also be provided independently. Then, in this structural example, a hole 522 is provided on the inner side of each protrusion 521.

[0316] "Independent state" refers to a state in which one protrusion 521 is not in contact with another protrusion 521 located next to it.

[0317] Furthermore, it is not necessary to provide the hole 522 in a manner that corresponds to every single one of the protrusions 521. It is also possible to provide the hole 522 in a manner that corresponds to a portion of the protrusions 521, while there is no hole 522 inside the other portion of the protrusions 521.

[0318] exist Figure 12 In the example structure shown, the hole 522 is surrounded by the protrusion 521, which increases the adhesion of the paper P to the tape member 510.

[0319] In addition, Figure 12 In the example structure shown, similarly to the above, the width W of the protrusion 521 is preferably set to within 1.5 mm.

[0320] (Postscript) (1)

[0322] A recording media transmission device, comprising:

[0323] The belt component moves in a circular motion and conveys the recording medium attached to the outer peripheral surface of the belt component;

[0324] A protrusion protrudes from the outer peripheral surface of the belt member and is arranged in a linear shape, configured in an inclined state relative to the direction of movement of the belt member; and

[0325] Remove the component, which is configured to contact the outer peripheral surface of the component, and remove any adhering material attached to the outer peripheral surface. (2)

[0327] According to the recording media transmission device described in (1), wherein,

[0328] In the transport direction of the recording medium based on the tape component, a heating device is provided on a downstream or upstream side of the tape component, the heating device heating the recording medium.

[0329] The removal component contacts the portion of the belt component located on the side opposite to the heating device side. (3)

[0331] According to the recording media transmission device described in (2), wherein,

[0332] In the transport direction of the recording medium based on the tape component, the heating device is provided on a downstream side compared to the tape component.

[0333] The following are provided on the inner side of the belt component:

[0334] The rotating component is driven to rotate, and a driving force is applied to the belt component for its movement; and

[0335] The driven rotating component, positioned upstream of the driving rotating component in the transport direction of the recording medium, is subjected to a force from the belt component and rotates driven by the belt component.

[0336] The removal component is pressed against the driven rotating component via the belt component. (4)

[0338] The recording media transmission apparatus according to any one of (1) to (3), wherein,

[0339] A second protrusion is also provided, which is different from the first protrusion, which is configured as an inclined protrusion, and is arranged in a linear shape and has an inclination angle relative to the direction of movement that is different from that of the first protrusion. (5)

[0341] According to the recording media transmission device described in (4), wherein,

[0342] The first protrusion is provided in multiple portions and is configured to extend in a common direction.

[0343] The second protrusion is provided in multiple forms, and is configured to extend in a direction different from that of the first protrusion but in the same direction.

[0344] By providing multiple first protrusions and second protrusions with different extending directions, a grid-like protrusion is provided on the outer peripheral surface of the belt component. (6)

[0346] According to the recording media transmission device described in (4) or (5), wherein,

[0347] The first protrusion is inclined towards one end of the belt member in the width direction, towards the downstream side in the direction of transport of the recording medium.

[0348] The second protrusion is inclined toward the downstream side in the direction of transport of the recording medium, in a manner close to the other end side in the width direction of the belt component. (7)

[0350] The recording media transmission apparatus according to any one of (1) to (6), wherein,

[0351] The protrusions, arranged in a state of tilt relative to the direction of movement, are of multiple types and configured in a grid shape.

[0352] The belt component is provided with a hole for air to pass through from the outer peripheral surface to the inner peripheral surface, and the hole is surrounded by a protrusion located around the hole among a plurality of protrusions configured in a grid shape. (8)

[0354] An image forming apparatus comprising:

[0355] An image forming unit forms an image on a recording medium;

[0356] A heating device heats a recording medium on which an image has been formed by the image forming unit; and

[0357] The recording medium transport device transports a recording medium in which an image has been formed by the image forming unit to the heating device, or transports a recording medium that has passed through the heating device.

[0358] The recording media transmission device has the structure of any one of (1) to (7).

[0359] According to the recording medium transport apparatus involved in (1), compared with a structure that does not provide protrusions on the surface of the tape component used for transporting the recording medium, the reliability of cleaning of the tape component used for transporting the recording medium can be improved.

[0360] According to the recording media transmission device involved in (2), compared with the case where the removal component and the portion of the belt component located on the heating device side are in contact, it is less likely that the removal material removed by the removal component will adhere to the removal component.

[0361] According to the recording media transmission device involved in (3), compared with the case where the removal member is pressed against the drive rotation member via the belt member, it is less likely that the removal material removed by the removal member will stick to the removal member.

[0362] According to the recording medium transport device involved in (4), compared with the case where only the first protrusion is provided on the outer peripheral surface of the belt component, the support of the recording medium by the protrusion can be stabilized.

[0363] According to the recording medium transport device involved in (5), compared with the case where only the first protrusion is provided on the outer peripheral surface of the belt component, the support of the recording medium by the protrusion can be stabilized.

[0364] According to the recording medium transport device involved in (6), compared with the case where the first protrusion and the second protrusion are inclined in a manner close to either one end side or the other end side in the width direction of the belt member, the support of the recording medium by the protrusion can be stabilized.

[0365] According to the recording medium transport device involved in (7), compared with the case where the hole is not surrounded by the protrusion, it is possible to suppress the reduction of the adhesion of the recording medium to the outer peripheral surface of the belt member caused by the protrusion being provided on the outer peripheral surface of the belt member.

[0366] According to the image forming apparatus described in (8), compared with a structure in which no protrusion is provided on the surface of the tape component used for transmitting the recording medium, the reliability of cleaning of the tape component used for transmitting the recording medium can be improved.

[0367] The embodiments of the present invention described above are provided for illustrative purposes. Furthermore, these embodiments do not encompass the entirety of the invention, nor do they limit the invention to the disclosed methods. It will be apparent to those skilled in the art that various modifications and variations will be readily understood. These embodiments were chosen and described to most readily explain the principles and applications of the invention. Thus, those skilled in the art can understand the invention through various modifications that are assumed to be optimized for specific uses of various embodiments. The scope of the invention is defined by the foregoing claims and their equivalents.

Claims

1. A recording media transmission device, comprising: The belt component moves in a circular motion and conveys the recording medium attached to the outer peripheral surface of the belt component; A protrusion protrudes from the outer peripheral surface of the belt member and is arranged in a linear shape, configured in an inclined state relative to the direction of movement of the belt member; and Remove the component, which is configured to contact the outer peripheral surface of the component, and remove any adhering material attached to the outer peripheral surface.

2. The recording media transmission apparatus according to claim 1, wherein, In the transport direction of the recording medium based on the tape component, a heating device is provided on a downstream or upstream side of the tape component, the heating device heating the recording medium. The removal component contacts the portion of the belt component located on the side opposite to the heating device side.

3. The recording media transmission apparatus according to claim 2, wherein, In the transport direction of the recording medium based on the tape component, the heating device is provided on a downstream side compared to the tape component. The following are provided on the inner side of the belt component: The rotating component is driven to rotate, and a driving force is applied to the belt component for its movement; and The driven rotating component, positioned upstream of the driving rotating component in the transport direction of the recording medium, is subjected to a force from the belt component and rotates driven by the belt component. The removal component is pressed against the driven rotating component via the belt component.

4. The recording media transmission apparatus according to any one of claims 1 to 3, wherein, A second protrusion is also provided, which is different from the first protrusion, which is configured as an inclined protrusion, and is arranged in a linear shape and has an inclination angle relative to the direction of movement that is different from that of the first protrusion.

5. The recording media transmission apparatus according to claim 4, wherein, The first protrusion is provided in multiple portions and is configured to extend in a common direction. The second protrusion is provided in multiple forms, and is configured to extend in a direction different from that of the first protrusion but in the same direction. By providing multiple first protrusions and second protrusions with different extending directions, a grid-like protrusion is provided on the outer peripheral surface of the belt component.

6. The recording media transmission apparatus according to claim 4 or 5, wherein, The first protrusion is inclined towards one end of the belt member in the width direction, towards the downstream side in the direction of transport of the recording medium. The second protrusion is inclined toward the downstream side in the direction of transport of the recording medium, in a manner close to the other end side in the width direction of the belt component.

7. The recording media transmission apparatus according to any one of claims 1 to 6, wherein, The protrusions, arranged in a state of tilt relative to the direction of movement, are of multiple types and configured in a grid shape. The belt component is provided with a hole for air to pass through from the outer peripheral surface side toward the inner peripheral surface side of the belt component. The aperture is surrounded by a protrusion located around the aperture among a plurality of protrusions configured in a grid shape.

8. An image forming apparatus comprising: An image forming unit forms an image on a recording medium; A heating device heats a recording medium on which an image has been formed by the image forming unit; and A recording medium transport device transmits a recording medium in which an image has been formed by the image forming unit to the heating device, or transmits a recording medium that has passed through the heating device. The recording media transmission device has the structure of the recording media transmission device as described in any one of claims 1 to 7.

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