Multilayer belt, medium conveying device, and recording device

Abstract

The invention discloses a multi-layer belt, a medium conveying device and a recording device. The multilayer tape is provided with: a metal layer (70) formed in a ring shape; a resin layer (72) provided on the metal layer (70); and a low-reflection layer that is provided at least partially between the metal layer (70) and the resin layer (72) and that has a lower light reflectance than the metal layer (70).

Description

Technical Field

[0001] The present invention relates to a multi-layer belt, a medium conveying device, and a recording device. Background Art

[0002] Patent Document 1 discloses a long-life metal belt and a coated belt having excellent durability.

[0003] The metal belt described in Patent Document 1 is formed into a ring shape by an electroforming process using a nickel electrolytic bath containing a primary brightener and a secondary brightener, and has a crystal orientation ratio I(200) / I(111) of 113 or more and 250 or less. In addition, the metal belt has nickel as a main component and does not contain manganese. The primary brightener is an organic compound having a structure of =C-SO 2 - structure, and the secondary brightener is an organic compound having any one of the structures of C=O, C=C, C≡N, C=N, C≡C, N-C=S, N=N, -CH 2 -CH-O-.

[0004] The metal belt and the coated belt as described above are sometimes provided as a conveyor belt for conveying a specified conveyed object in a conveying device. A detection unit for detecting the conveyed object may be provided in the conveying device. An optical sensor that irradiates light onto the conveyor belt and receives reflected light from the conveyed object may be used in the detection unit.

[0005] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2009-174058

[0006] However, when a metal belt or a coated belt such as that in Patent Document 1 is provided in a conveying device equipped with an optical sensor, in the conveying device, due to the gloss on the surface of the belt, light from the optical sensor is reflected, and there may be an adverse situation when detecting the conveyed object. Summary of the Invention

[0007] One aspect of the present disclosure is a multi-layer belt, which includes: a metal layer formed into a ring shape; a resin layer provided on the metal layer; and a low-reflection layer provided on at least a part between the metal layer and the resin layer, the light reflectivity of which is lower than that of the metal layer.

[0008] Another aspect of the present disclosure is a medium conveying device, which includes a belt conveying unit provided with the above multi-layer belt and capable of conveying a medium.

[0009] Another aspect of the present disclosure is a recording device, which includes: a belt conveying unit provided with the above multi-layer belt and capable of conveying a medium; and a recording unit for recording on the medium conveyed by the belt conveying unit. Brief Description of the Drawings

[0010] Figure 1 It is a main part side view showing each part related to the medium conveyance path of the printing apparatus.

[0011] Figure 2 It is a main part side view showing the conveying device.

[0012] Figure 3 It is a perspective view of the conveyor belt.

[0013] Figure 4 It is Figure 3 a cross-sectional view taken at plane IV of

[0014] Figure 5 It is Figure 3 a cross-sectional view taken at plane V of

[0015] Figure 6 It is an explanatory view showing the manufacturing process of the conveyor belt.

[0016] Figure 7 It is a view showing the green machining process.

[0017] Figure 8 It is a view showing the bonding process.

[0018] Figure 9 It is a view showing the low-reflection layer forming process.

[0019] Figure 10 It is a view showing the process of cutting the positioning part.

[0020] Explanation of reference numerals

[0021] 1: Printing apparatus; 2: Apparatus main body; 3: First medium cassette; 4: Second medium cassette; 5: Ink storage part; 9, 10: Pickup rollers; 11, 12: Feed roller pair; 13, 14, 15, 16, 17, 18, 19, 20, 21, 22: Conveying roller pair; 23, 24: Baffles; 25: Head unit; 26: Line head; 26a: Ink ejection surface; 27: Discharge tray; 29: Charging roller; 30: Conveying device; 31: Driving wheel; 32: Driven wheel; 33: Conveyor belt; 33a: Outer peripheral surface; 34: Support roller; 35: Cleaning part; 36: Blade; 37: Fixed part; 38: Rotating shaft; 40: Large diameter part; 42: Small diameter part; 43: Contact part; 50: Control part; 57: Belt driving motor; 58: Belt charging part; 59: Blade driving part; 65: Upstream sensor; 66: Downstream sensor; 70: Metal layer; 72: Resin layer; 74: Blackening treatment layer; 76: Ridge; 80: Metal material; 84: Positioning part; 86: Metal strip; 90: Composite die; A1, A2: Discharge positions; F: Conveying direction; I: Orthogonal direction; K1: Branch position; L: Length direction; P: Recording paper; R: Medium conveyance path; W: Width direction. Detailed Embodiments

[0022] Next, embodiments of the present invention will be described with reference to the accompanying drawings. It should be noted that when describing, the descriptions of directions such as front, back, left, right, up, and down are assumed to be the same as the directions relative to Figure 1 the printing apparatus 1 unless otherwise specified. In addition, the symbol UP in each figure indicates the upper side of the printing apparatus 1 in the vertical direction, and the symbol LH indicates the left side of the printing apparatus 1. The left-right direction and the front-back direction of the printing apparatus 1 are perpendicular to each other and parallel in the horizontal direction.

[0023] Figure 1 is a main part side view showing each part related to the medium conveyance path R of the printing apparatus 1. In Figure 1 the medium conveyance path R is shown by a dashed line.

[0024] As Figure 1 shown, the printing apparatus 1 is a device that prints characters and images on the recording paper P by ejecting ink from a line-type inkjet head onto the recording paper P as a medium. The printing apparatus 1 corresponds to a "recording device".

[0025] In the printing apparatus 1, the recording paper P is conveyed through the medium conveyance path R shown by a dashed line. In the following description, the direction in which the recording paper P is conveyed in the medium conveyance path R is referred to as the conveyance direction F.

[0026] The printing apparatus 1 includes a device main body 2 as a housing.

[0027] The device main body 2 is provided with a first medium cassette 3 and a second medium cassette 4. Both the first medium cassette 3 and the second medium cassette 4 function as accommodating portions for accommodating the recording paper P. The first medium cassette 3 and the second medium cassette 4 are detachably provided on the device main body 2 from the front side.

[0028] In the device main body 2, there are provided: a pickup roller 9 that feeds out the recording paper P accommodated in the first medium cassette 3; and a pickup roller 10 that feeds out the recording paper P accommodated in the second medium cassette 4.

[0029] In the device main body 2, there are provided: a pair of feed rollers 11 that feed out the recording paper P sent out from the first medium cassette 3 in an obliquely upward direction; and a pair of feed rollers 12 that feed out the recording paper P sent out from the second medium cassette 4 in an obliquely upward direction. Moreover, in the device main body 2, there is provided a pair of conveyance rollers 13 that convey the recording paper P sent out by the pair of feed rollers 12 in the upward direction.

[0030] In the apparatus main body 2, there are provided conveying roller pairs 14, 15, and 16. The conveying roller pairs 14, 15, and 16 are arranged above the feeding roller pair 11 and the conveying roller pair 13. Each of the conveying roller pairs 14, 15, and 16 sequentially conveys the recording paper P sent out from the feeding roller pair 11 and the conveying roller pair 13 to the upper part of the apparatus main body 2.

[0031] Each of the feeding roller pairs 11, 12 and the conveying roller pairs 13, 14, 15, 16 includes: a driving roller driven by a motor; and a driven roller that rotates idly in contact with the driving roller. Each of the feeding roller pairs 11, 12 and the conveying roller pairs 13, 14, 15, 16 conveys the recording paper P sandwiched between the driving roller and the driven roller in the conveying direction F by the rotation of the driving roller and the driven roller.

[0032] In the following description, by "roller pair" is meant a roller pair that, like the feeding roller pairs 11, 12 and the conveying roller pairs 13, 14, 15, 16, includes a driving roller and a driven roller, and sandwiches and conveys the recording paper P therebetween.

[0033] At the upper part of the apparatus main body 2, there is provided a head unit 25. The head unit 25 includes a line head 26 that ejects a prescribed ink. The line head 26 is a line inkjet head that does not perform scanning and can eject ink. The line head 26 has an ink ejection surface 26a that is a plane. In the ink ejection surface 26a, a plurality of nozzles for ejecting ink are arranged along a direction orthogonal to the conveying direction F, that is, the orthogonal direction I. The orthogonal direction I is a direction orthogonal to the vertical direction and the horizontal direction of the printing apparatus 1. The orthogonal direction I is as shown in Figure 3 described later.

[0034] It should be noted that each nozzle provided on the ink ejection surface 26a is not limited to being arranged in a direction orthogonal to the conveying direction F, and may also be arranged in a direction that obliquely intersects the conveying direction F.

[0035] The column of nozzles provided on the ink ejection surface 26a is formed to be at least the same as or wider than the range where the recording paper P can be printed.

[0036] In the apparatus main body 2, there is provided an ink storage section 5 for storing ink. The ink ejected from the line head 26 is supplied to the line head 26 from the ink storage section 5 via a flow path formed by a pipe or the like. The ink storage section 5 includes a plurality of ink cartridges.

[0037] The head unit 25 and the ink storage section 5 correspond to the "recording section".

[0038] In the apparatus main body 2, there is provided a conveying device 30.

[0039] The conveying device 30 includes a conveyor belt 33, a driving wheel 31, and a driven wheel 32. The conveyor belt 33 is an endless belt suspended between the driving wheel 31 and the driven wheel 32. The conveyor belt 33 is driven to rotate by the belt driving motor 57 via the driving wheel 31. The belt driving motor 57 is as described in the following Figure 2 shown. The belt driving motor 57 may also be an actuator such as a motor.

[0040] The conveying device 30 corresponds to a "medium conveying device".

[0041] The conveyor belt 33 forms a flat portion by being suspended between the driving wheel 31 and the driven wheel 32. This flat portion of the conveyor belt 33 is arranged in a parallel and opposed manner to the ink jet surface 26a. The peripheral surface of the conveyor belt 33 rotates along the conveying direction F. The width direction of the conveyor belt 33 coincides with the direction orthogonal to the conveying direction F, i.e., the orthogonal direction I.

[0042] The recording paper P is conveyed between the line head 26 and the conveyor belt 33 through the respective conveying roller pairs 14, 15, and 16. The recording paper P is conveyed by the conveyor belt 33 while being adsorbed by the conveyor belt 33 so that one surface of the recording paper P is held in a position opposed to the ink jet surface 26a. And recording is performed by ejecting ink from the respective nozzles of the ink jet surface 26a onto one surface of the recording paper P conveyed by the conveyor belt 33.

[0043] In this case, the width direction of the recording paper P coincides with the orthogonal direction I on the surface of the recording paper P.

[0044] If one surface of the recording paper P has been recorded by the line head 26, it is conveyed upward by the conveying roller pair 17 located downstream of the conveyor belt 33.

[0045] A baffle 23 is provided downstream of the conveying roller pair 17. In the printing device 1, the conveying path of the recording paper P is switched by this baffle 23.

[0046] At the upper part of the device main body 2, there are provided a discharge position A1 and a discharge position A2 for discharging the recording paper P from the inside of the device main body 2 to the outside of the device main body 2.

[0047] When discharging the recording paper P after recording one surface, the medium conveying path R is switched by the baffle 23 to the path of the conveying roller pair 20 facing upward.

[0048] A baffle 24 is provided downstream of the conveying roller pair 20. The medium conveying path R is switched by this baffle 24 to any of the following paths: the path for discharging the recording paper P from the discharge position A1, or the path for conveying the recording paper P to the conveying roller pair 21 vertically above the baffle 24.

[0049] The recording paper P discharged from the discharge position A1 is received by the discharge tray 27 provided in the apparatus main body 2.

[0050] When the recording paper P is conveyed toward the pair of conveying rollers 21, it is discharged from the discharge position A2. The recording paper P discharged from the discharge position A2 is received by an optional tray or the like, for example.

[0051] When recording is to be performed on both sides of the recording paper P, the recording paper P is conveyed upward by the baffle 23 and passes through the branch position K1, and is conveyed from the branch position K1 to the upper reversing path. A pair of conveying rollers 22 is provided in the reversing path. The recording paper P conveyed to the reversing path is conveyed upward by the pair of conveying rollers 22. In the printing apparatus 1, when the upstream end of the recording paper P passes through the branch position K1, the rotation direction of the pair of conveying rollers 22 is switched. As a result, the recording paper P is conveyed downward.

[0052] In the apparatus main body 2, a pair of conveying rollers 18 and 19 is provided between the pair of conveying rollers 22 and the pair of conveying rollers 15. If the recording paper P is conveyed downward by the pair of conveying rollers 22, it is sent out by the pair of conveying rollers 18 and 19 and thus reaches the pair of conveying rollers 15 and 16. The recording paper P is conveyed to the conveyor belt 33 again by the pair of conveying rollers 15 and 16.

[0053] In this case, the other side of the recording paper P faces the line head 26. Thus, in the printing apparatus 1, recording based on the line head 26 can be performed on the other side of the recording paper P. If recording is performed on the other side of the recording paper P, it is discharged from the above-described discharge position A1 or discharge position A2.

[0054] Next, the conveying device 30 will be described in detail.

[0055] Figure 2 It is a side view showing the main part of the conveying device 30.

[0056] As Figure 2 shown, the conveyor belt 33 constituting the conveying device 30 is an endless belt formed by applying an insulating material to a base material made of a metallic material.

[0057] The conveyor belt 33 is suspended from a driving wheel 31 on the upstream side and a driven wheel 32 on the downstream side in the medium conveying path R.

[0058] A predetermined tension is applied to the conveyor belt 33 by a tensioner or the like. As a result, the conveyor belt 33 forms a flat surface at a position facing the ink ejection surface 26a.

[0059] The driving wheel 31 is rotationally driven by a belt driving motor 57. If the driving wheel 31 is rotationally driven in the arrow direction, the conveyor belt 33 moves toward Figure 2Rotating in the clockwise direction. In the conveying device 30, the driven wheel 32 rotates along with the rotation of the conveyor belt 33.

[0060] Both the driving wheel 31 and the driven wheel 32 are rod-shaped members arranged in such a way that their long side directions extend along the orthogonal direction I. The length dimensions of the driving wheel 31 and the driven wheel 32 in their long side directions are formed to be longer than the dimension in the direction along the orthogonal direction I of the conveyor belt 33, that is, the width dimension.

[0061] As described later Figure 5 As shown, the driving wheel 31 and the driven wheel 32 are each provided with a large-diameter portion 40 and a small-diameter portion 42. The large-diameter portion 40 is provided at the central portion of each of the driving wheel 31 and the driven wheel 32 in their long side directions. The small-diameter portion 42 is provided at both ends of each of the driving wheel 31 and the driven wheel 32 in their long side directions and is formed to have a diameter dimension smaller than that of the large-diameter portion 40. The entire large-diameter portion 40 is covered by the conveyor belt 33, and at least both end portions of the small-diameter portion 42 protrude outward from the conveyor belt 33.

[0062] A contact portion 43 is provided at the portion between the large-diameter portion 40 and the small-diameter portion 42. The contact portion 43 is a stepped surface formed by the difference in the diameter dimensions of the large-diameter portion 40 and the small-diameter portion 42. The contact portion 43 is a plane orthogonal to the orthogonal direction I.

[0063] It should be noted that a support plate for supporting the conveyor belt 33 may also be provided inside the conveyor belt 33. The support plate is a plate-shaped member having a plane opposed to the ink ejection surface 26a. By supporting from the inner side by the support plate, the deflection of the conveyor belt 33 at the position opposed to the ink ejection surface 26a is restricted, and a stable flat surface can be formed.

[0064] In the conveying device 30, a charging roller 29 is provided at a position opposed to the driving wheel 31 with the conveyor belt 33 interposed therebetween.

[0065] The charging roller 29 is in contact with the outer surface of the conveyor belt 33 and rotates idly along with the rotation of the conveyor belt 33. A DC voltage is applied to the charging roller 29 by the charging unit 58. Thereby, the charging roller 29 supplies charges to the portion in contact with the conveyor belt 33 and generates an electrostatic force.

[0066] In the present embodiment, the charging roller 29 supplies positive charges to the conveyor belt 33, making the outer peripheral surface 33a of the conveyor belt 33 charged with a positive polarity. Thus, the outer peripheral surface 33a of the conveyor belt 33 is an adsorption surface for adsorbing the recording paper P. That is, the recording paper P conveyed by the conveyor belt 33 is held on the conveyor belt 33 by so-called electrostatic adsorption.

[0067] The charging roller 29 corresponds to the "charging portion".

[0068] A support roller 34 that contacts the medium is provided on the upstream side of the line head 26. The support roller 34 presses the recording paper P at the portion where the conveyor belt 33 is wound around the drive wheel 31. The support roller 34 is arranged in contact with the recording paper P.

[0069] If the charging roller 29 imparts charge to the outer peripheral surface 33a of the conveyor belt 33, charges of the opposite polarity are generated on the surface of the recording paper P that contacts the outer peripheral surface 33a. Charges of the opposite polarity to those generated on the surface that contacts the outer peripheral surface 33a are generated on the recording surface of the recording paper P, which is the side opposite to the surface that contacts the outer peripheral surface 33a and where recording is performed on the recording paper P.

[0070] In the present embodiment, the charge on the recording surface side of the recording paper P is removed by the support roller 34 contacting the recording surface of the recording paper P. As a result, only the charge on the side of the recording paper P that contacts the conveyor belt 33 remains, and the recording paper P is adsorbed more strongly to the outer peripheral surface 33a.

[0071] In addition, when the conveyor belt 33 does not convey the recording paper P and the conveying device 30 is driven, the support roller 34 abuts against the outer peripheral surface 33a. Thereby, the charge on the outer peripheral surface 33a of the conveyor belt 33 is removed.

[0072] The outer surface of the support roller 34 can be made of any material as long as it can remove charge from the recording paper P and the conveyor belt 33. The outer surface of the support roller 34 is formed of a resin material such as conductive nylon, for example.

[0073] It should be noted that the support roller 34 can also function as a friction imparting portion that causes the conveyor belt 33 to be charged by friction.

[0074] In addition, the printing device 1 may further include a charge removal brush or the like that contacts the recording paper P instead of the support roller 34.

[0075] The support roller 34 corresponds to the "charge removal portion".

[0076] An upstream sensor 65 and a downstream sensor 66 are provided in the conveying device 30.

[0077] The upstream sensor 65 is provided in the medium conveying path R at a position upstream of the line head 26 and opposite to the conveyor belt 33.

[0078] The downstream sensor 66 is provided in the medium conveying path R at a position downstream of the line head 26 and opposite to the conveyor belt 33.

[0079] In the present embodiment, the upstream sensor 65 and the downstream sensor 66 are arranged at positions substantially in the center in the width direction of the conveyor belt 33 and opposite to the conveyor belt 33.

[0080] It should be noted that the upstream sensor 65 and the downstream sensor 66 may be located at positions facing the conveyor belt 33, and can be arranged at any position in the width direction of the conveyor belt 33. Additionally, for example, multiple upstream sensors 65 and downstream sensors 66 may also be arranged along the width direction of the conveyor belt 33.

[0081] The upstream sensor 65 and the downstream sensor 66 are optical sensors having a light emitting portion and a light receiving portion. The light emitting portion emits light toward the conveyor belt 33, and the light receiving portion receives the reflected light, which is the light reflected by the emitted light from the light emitting portion on the recording paper P. The light emitting portion is, for example, a light emitting element. The light receiving portion is, for example, a light receiving element.

[0082] A cleaning portion 35 is provided at a position adjacent to the driven pulley 32. The cleaning portion 35 includes blades 36 as cleaning members for cleaning the outer peripheral surface 33a of the conveyor belt 33.

[0083] The blades 36 are plate-shaped elastic members having a predetermined thickness formed of, for example, polyurethane, rubber, etc. The blades 36 can elastically deform in a state of being in contact with the conveyor belt 33. The front end portion of the blades 36 contacts the portion of the conveyor belt 33 wound around the driven pulley 32 to clean the outer peripheral surface 33a of the conveyor belt 33.

[0084] The blades 36 are fixed to a fixing member 37. The fixing member 37 is arranged to be rotatable about a rotation shaft 38.

[0085] The rotation shaft 38 is rotationally driven by a blade driving portion 59. In the cleaning portion 35, rotation is performed through the rotation shaft 38 to switch between a contact state in which the blades 36 are in contact with the conveyor belt 33 and a separation state in which the blades 36 are separated from the conveyor belt 33.

[0086] The blade driving portion 59 may also be an actuator such as a motor.

[0087] In the cleaning portion 35, in the contact state of the blades 36, the conveyor belt 33 rotates forward to remove attachments such as ink and paper scraps attached to the outer peripheral surface 33a of the conveyor belt 33.

[0088] It should be noted that the cleaning portion 35 may also be, for example, a belt-shaped cloth or the like formed to be rotatably driven.

[0089] The above-described belt driving motor 57, belt electrifying portion 58, and blade driving portion 59 are controlled by a control portion 50 serving as a control unit.

[0090] The control portion 50 is a control unit that controls the entire printing apparatus 1. The control portion 50 controls the line head 26, each medium conveying motor for driving the rollers, etc.

[0091] The control unit 50 includes a CPU, a ROM, a RAM, etc. as an operation execution unit. In the ROM of the control unit 50, firmware that can be executed by the CPU, data related to the firmware, etc. are stored non-volatile. In addition, data related to the firmware executed by the CPU is temporarily stored in the RAM. The control unit 50 may also include other peripheral circuits, etc. The control unit 50 may also include a storage unit that can store various programs and data such as control programs and data related to these control programs non-volatile.

[0092] The control unit 50 switches the switch for applying voltage to the charging roller 29 and switches the voltage value applied to the charging roller 29 by controlling the charging belt unit 58.

[0093] The control unit 50 controls the blade driving unit 59 and adjusts the pressing force when the blade 36 presses the conveyor belt 33 by adjusting the rotation amount of the rotating shaft 38.

[0094] Detection signals can be input to the control unit 50 from various sensors. The control unit 50 performs necessary control based on this detection signal.

[0095] The control unit 50 can detect the passage of the leading end or the trailing end of the recording paper P at the position of the upstream sensor 65 by obtaining the detection signal of the upstream sensor 65. The control unit 50 can detect the passage of the leading end of the recording paper P or the trailing end of the recording paper P at the position of the downstream sensor 66 by obtaining the detection signal of the downstream sensor 66.

[0096] Next, the conveyor belt 33 will be described in detail.

[0097] Figure 3 It is a perspective view of the conveyor belt 33.

[0098] As Figure 3 shown, the conveyor belt 33 is a belt member formed in a loop. The entire conveyor belt 33 is formed in a substantially cylindrical shape. When the conveyor belt 33 is installed on the conveying device 30, it is arranged in such a way that the long side direction extends along the orthogonal direction I. The long side direction of the conveyor belt 33 is the width direction of the above-mentioned conveyor belt 33.

[0099] Figure 4 It is a cross-sectional view showing Figure 3 the cross-section at plane IV. Plane IV is a plane that is approximately in the center in the long side direction of the conveyor belt 33 and is orthogonal to the circumferential surface of the conveyor belt 33. Plane IV is a plane parallel to the long side direction of the conveyor belt 33 and the orthogonal direction I.

[0100] As Figure 4 shown, the conveyor belt 33 is a multi-layer belt formed by laminating multiple materials.

[0101] The conveyor belt 33 has a metal layer 70. The metal layer 70 is formed of a metal material and is a base material formed over the entire lengthwise direction and the entire circumferential direction of the conveyor belt 33. That is, the metal layer 70 is a so-called winding material formed integrally into a substantially cylindrical shape.

[0102] In the present embodiment, an austenitic stainless steel material is used for the metal layer 70. For example, SUS304H, SUS304 1 / 2H, SUS304 3 / 4H, SUS301 1 / 2H, SUS301 3 / 4H, SUS301H, SUS301EH, SUS632J1, etc. can be used for the metal layer 70.

[0103] In this way, in the conveyor belt 33, the metal layer 70 can use an inexpensive and highly processable material, which can improve productivity.

[0104] Here, in the printing apparatus 1, the conveyor belt 33 is used at a prescribed temperature along with the driving of the respective parts of the conveying device 30 and the printing apparatus 1. As described above, the conveyor belt 33 is inserted into the driving wheel 31 and the driven wheel 32, and is rotationally driven or stopped by the conveying device 30 while being under tension.

[0105] When the base material of the conveyor belt 33 is a resin material, if it is held in a stopped state for a prescribed period, the conveyor belt 33 will be fixed in that held state, and so-called creep deformation may occur. Therefore, when the base material of the conveyor belt 33 is a resin material, a mechanism for releasing the tension, etc., for suppressing creep deformation needs to be provided for the conveying device 30.

[0106] The conveyor belt 33 of the present embodiment uses a metal material as the base material, and thus, for example, has higher heat resistance than the case where a resin material is used as the base material, and is not likely to become sticky at the temperature during use of the printing apparatus 1.

[0107] As a result, in the conveying device 30, there is no need to release the tension, and there is no need to design a mechanism for suppressing creep deformation.

[0108] Moreover, the conveyor belt 33 of the present embodiment has a prescribed rigidity by using a metal material as the base material. Therefore, in the conveyor belt 33, a support plate or the like for suppressing the generation of deflection does not need to be provided, and a stable flat surface is formed at the position facing the ink ejection surface 26a.

[0109] In addition, even when a support plate is provided, wear caused by sliding between the conveyor belt 33 and the support plate can be suppressed.

[0110] In this way, by including the conveyor belt 33 in the conveying device 30, the device structure can be simplified.

[0111] The conveyor belt 33 is provided with a blackening treatment layer 74. The blackening treatment layer 74 is a black layer capable of absorbing the emitted light emitted from the upstream sensor 65 and the downstream sensor 66.

[0112] In the present embodiment, the blackening treatment layer 74 is provided over the entire circumferential direction of the metal layer 70.

[0113] The blackening treatment layer 74 has a specified width dimension along the long side direction of the conveyor belt 33. In the present embodiment, the blackening treatment layer 74 has a width dimension that overlaps the entire irradiation range of the light-emitting sensor.

[0114] The blackening treatment layer 74 is provided on the outer surface of the metal layer 70. The blackening treatment layer 74 is disposed substantially at the center in the long side direction of the conveyor belt 33. Thus, the blackening treatment layer 74 is disposed opposite to the upstream sensor 65 and the downstream sensor 66 respectively.

[0115] In the blackening treatment layer 74, resin coatings such as polyester-based coatings, acrylic-based coatings, polyurethane-based coatings, silicone-based coatings, and fluorine-based coatings can be used. In addition, for example, in the blackening treatment layer 74, in addition to the coating, black tapes, film materials, etc. can also be used.

[0116] It should be noted that in the conveyor belt 33, in addition to the blackening treatment layer 74, any treatment layer can be provided as long as it is a low-reflection layer with a reflectivity lower than that of a medium such as the recording paper P and the outer surface of the metal layer 70.

[0117] In addition, for example, the blackening treatment layer 74 can be partially provided in the circumferential direction of the conveyor belt 33, such as in a dotted line shape, etc., according to the structure and function of the upstream sensor 65 and the downstream sensor 66 or the shape and type of the medium.

[0118] In addition, for example, the blackening treatment layer 74 can also be provided at any position in the long side direction of the conveyor belt 33. In addition, for example, a plurality of blackening treatment layers 74 can also be provided in a columnar shape along the long side direction of the conveyor belt 33.

[0119] Thus, the blackening treatment layer 74 can be provided only in the necessary part of the conveyor belt 33. Therefore, productivity can be improved in such a conveyor belt 33.

[0120] The blackening treatment layer 74 corresponds to the "low-reflection layer".

[0121] The conveyor belt 33 is provided with a resin layer 72. The resin layer 72 is a layer having insulation properties and formed of a transparent or semi-transparent resin material, and covering the entire outer surface of the metal layer 70.

[0122] In the resin layer 72, resin materials having abrasion resistance, low friction, creep resistance, ink resistance, ink repellency, and adhesiveness can be used.

[0123] In the resin material used for the resin layer 72, fluororesins, polypropylene, polyamide, polyethylene terephthalate, polyethylene, aromatic polyether ketones such as polyether ether ketone, cycloolefin polymers, cycloolefin copolymers and other cycloolefin-based resins, epoxy resins, silicone, etc. can be used.

[0124] The resin layer 72 is formed, for example, by electrostatic powder coating to coat the entire outer surface of the metal layer 70 with the above resin material.

[0125] The conveyor belt 33 is formed with the resin layer 72, so that the electrostatic force based on the charged roller 29 can be generated. Therefore, the conveyor belt 33 can hold the recording paper P.

[0126] The conveyor belt 33 is formed as described above by providing the resin layer 72 on the outer surface of the metal layer 70. That is, the conveyor belt 33 is formed of two materials with different melting temperatures, chemical resistance, etc.

[0127] Thereby, in the process of manufacturing the conveyor belt 33, the situation of being restricted by temperature and chemical resistance is suppressed, and it can be manufactured by a cheaper or easier manufacturing method.

[0128] In addition, since the conveyor belt 33 is formed of the metal layer 70 and the resin layer 72, they are easy to peel from each other. Therefore, the conveyor belt 33 can be easily reused.

[0129] Moreover, as described above, the conveyor belt 33 suppresses the creep deformation of the resin layer by providing the resin layer 72 on the outer surface of the metal layer 70. Thereby, in the conveyor belt 33, the thickness dimension of the resin layer 72 can be increased. Therefore, in the conveyor belt 33, the insulation of the resin layer 72 as an insulating layer can be improved, and the abrasion caused by friction with the recording paper P, etc. can be suppressed, and the durability of the resin layer 72 can be improved.

[0130] The resin layer 72 is transparent or translucent, so the emitted light emitted from the upstream sensor 65 and the downstream sensor 66 can pass through. Thereby, when the conveyor belt 33 does not hold the recording paper P, the emitted light reaches the blackening treatment layer 74. Therefore, the light reaching the blackening treatment layer 74 is absorbed and not reflected, and the control unit 50 can detect through the light receiving unit that the conveyor belt 33 does not hold the recording paper P.

[0131] It should be noted that when the conveyor belt 33 holds the recording paper P, the blackening treatment layer 74 is covered by the recording paper P. Therefore, the emitted light emitted from the light emitting unit is reflected by the recording surface of the recording paper P. The reflected light reflected from the recording surface of the recording paper P is received by the light receiving unit, and a specified signal is sent to the control unit 50. Thereby, the control unit 50 can detect through the light receiving unit that the conveyor belt 33 holds the recording paper P.

[0132] As described above, the blackening treatment layer 74 is provided over the entire circumference of the conveyor belt 33. Thus, in the printing apparatus 1, it is possible to detect whether the recording paper P is held by the conveyor belt 33 over the entire circumference of the conveyor belt 33.

[0133] Figure 5 It shows Figure 3 a cross-sectional view of the cross-section at the plane V. The plane V is an end portion in the longitudinal direction of the conveyor belt 33 and a plane orthogonal to the circumferential surface of the conveyor belt 33. The plane V is a plane parallel to the longitudinal direction of the conveyor belt 33 and the orthogonal direction I. In Figure 5 order to facilitate explanation, the driving wheel 31 is shown by a two-dot chain line.

[0134] As Figure 3 shown, ridges 76 are provided at both end portions in the longitudinal direction of the conveyor belt 33. The ridges 76 are long plate-like members having a predetermined thickness dimension and width dimension. As Figure 5 shown, the ridges 76 are provided over the entire circumference of the inner surface of the metal layer 70 at both end portions in the longitudinal direction of the conveyor belt 33. That is, the ridges 76 are annular protruding portions protruding from the inner surface of the metal layer 70.

[0135] As described above, the conveyor belt 33 is installed in the conveying device 30 in a state where the driving wheel 31 and the driven wheel 32 are inserted therethrough inside.

[0136] In the conveying device 30, the conveyor belt 33 sometimes snakes during driving. In this case, by the abutting portion 43 of the driving wheel 31 and the driven wheel 32 abutting against the ridges 76, the conveyor belt 33 can return to the position before snaking.

[0137] Since the conveyor belt 33 of the present embodiment has the metal layer 70 as a base material, even when pressed after the abutting portion 43 abuts against the ridges 76, bending at the end portion of the conveyor belt 33 can be suppressed.

[0138] In this way, the ridges 76 function as a snaking prevention portion of the conveyor belt 33.

[0139] It should be noted that the ridges 76 can be provided at any position in the longitudinal direction of the conveyor belt 33, and are not limited to both end portions in the longitudinal direction of the conveyor belt 33.

[0140] For example, the ridges 76 can also be arranged substantially at the center in the longitudinal direction of the conveyor belt 33. In this case, a groove shape having a width dimension capable of accommodating the ridges 76 inside can also be provided over the entire circumference substantially at the center between the driving wheel 31 and the driven wheel 32. The ridges 76 can correct the snaking of the conveyor belt 33 by abutting against the inner side surfaces of these groove shapes.

[0141] Next, the manufacturing process of the conveyor belt 33 will be described.

[0142] Figure 6 It is an explanatory diagram of the manufacturing process of the conveyor belt 33. Figure 6 It is a diagram showing the overview of the manufacturing process of the conveyor belt 33 distinguished by the main contents. Figure 6 It does not limit the details of the manufacturing process of the conveyor belt 33. For example, Figure 6 The process shown as one step sometimes includes multiple detailed processes. Figure 6 The order of the processes shown can also be appropriately replaced. In addition, in the manufacturing process of the conveyor belt 33, it is not excluded to perform Figure 6 processes not shown in

[0143] Figure 7 It is a diagram showing the green body processing step.

[0144] Figure 6 The step S1 shown is the green body processing step.

[0145] In the green body processing step, a plate-shaped or sheet-shaped metal material 80, which is the raw material of the metal layer 70, is subjected to green body processing. As Figure 7 shown, in the present embodiment, by applying pressure processing based on the composite die 90 to the metal material 80, a green body 82 is formed. The green body 82 corresponds to the metal layer 70. The green body 82 is a flat member formed in a substantially rectangular shape when viewed from above. The green body 82 has a specified length dimension along the first direction and the second direction. The first direction and the second direction are orthogonal directions. In the following description, the first direction is the length direction L, and the second direction is the width direction W.

[0146] In the green body 82, positioning portions 84 protruding outward from both ends in the width direction by a specified dimension are provided along the width direction W at both end portions 82 in the length direction L. Through holes penetrating in the plate thickness direction may also be provided in the positioning portions 84.

[0147] It should be noted that in the green body processing step, it is not limited to pressure processing, and other processing methods such as laser cutting, wire electrical discharge machining, etching, Thomson-type punching, shearing, cutting, and grinding can also be used.

[0148] Figure 8 It is a diagram showing the bonding step.

[0149] The step S2 is the bonding step.

[0150] As Figure 8As shown, in the joining process, the blank 82 is curled into a cylindrical shape with the longitudinal direction L becoming the circumferential direction, so that the two ends of the longitudinal direction L of the blank 82 are in close contact. Next, in the joining process, laser welding is performed on the two ends of the longitudinal direction L of the blank 82 from the outer surface side of the cylindrical blank 82 in a state where no step difference is generated. Specifically, fiber laser welding is used.

[0151] Thus, the blank 82 has an annular belt shape. In the following description, the blank 82 that is welded and becomes a belt shape is referred to as the metal belt 86.

[0152] In the joining process, the blank 82 is held by each positioning portion 84, so that the two ends of the longitudinal direction L of the blank 82 can be made to be in close contact more accurately and easily.

[0153] In this way, in the manufacturing process of the conveyor belt 33, high-precision processing of laser-welding the two ends of the longitudinal direction L of the blank 82 is performed, so that the deviation of the belt size can be suppressed.

[0154] Furthermore, in the manufacturing process of the conveyor belt 33, the metal belt 86 is formed without applying processing to the plane of the blank 82 in the blank processing process and the joining process. Thus, in the manufacturing process of the conveyor belt 33, deformation, damage, etc. accompanying processing on the outer surface of the metal belt 86 can be suppressed.

[0155] It should be noted that in the joining process, it is not limited to fiber laser welding, and CO2 laser welding, YAG laser welding, disk laser welding, semiconductor laser welding, etc. can also be used.

[0156] In addition, for example, in the joining process, electron beam welding, arc welding, friction stir welding, ultrasonic welding, friction press joining, joining based on an adhesive, and brazing joining can also be used.

[0157] In addition, for example, in the joining process, after welding the two ends of the longitudinal direction L of the blank 82 using squeeze roll welding, the step difference generated at the joining portion can be crushed to be smoothed.

[0158] In addition, for example, in the joining process, after the edges of the two ends of the longitudinal direction L of the blank 82 are joined, processing to return to a flat surface can be applied.

[0159] In addition, for example, in the joining process, mechanical joining units such as rivet joining, snap fit joining, flange joining, and interlocking can also be used to join the two ends of the longitudinal direction L of the blank 82.

[0160] Figure 9 It is a diagram showing the low-reflection layer forming process.

[0161] Step S3 is the low-reflection layer forming process.

[0162] In the low-reflection layer forming process, a black resin coating is applied approximately at the center in the longitudinal direction of the metal strip 86. In the low-reflection layer forming process, the outer surface of the metal strip 86 is coated by spraying a polyester-based coating.

[0163] Thereby, a blackening treatment layer 74 is formed on the outer surface of the metal strip 86.

[0164] It should be noted that in the low-reflection layer forming process, the blackening treatment layer 74 can also be locally provided in the circumferential direction of the metal strip 86, for example, in a dotted line shape or the like.

[0165] In addition, for example, in the low-reflection layer forming process, the blackening treatment layer 74 can also be provided at any position in the longitudinal direction of the conveyor belt 33. In addition, for example, in the low-reflection layer forming process, a plurality of blackening treatment layers 74 can be provided in a columnar shape along the longitudinal direction of the conveyor belt 33.

[0166] Thereby, the blackening treatment layer 74 can be provided only in the necessary part of the conveyor belt 33. Therefore, productivity can be improved in such a conveyor belt 33.

[0167] It should be noted that in the low-reflection layer forming process, as the resin coating, various coatings such as acrylic, polyurethane, silicone, and fluorine-based coatings can be used, for example.

[0168] These resin coatings can be applied by powder coating, roll coating, dot coating, brush coating, etc.

[0169] In addition, for example, the blackening treatment layer 74 can also be formed by electroplating treatments such as transfer film, black nickel electroplating, gunmetal electroplating, chromate treatment, and ceramic coating.

[0170] In addition, for example, the blackening treatment layer 74 can be formed by printing such as physical vapor deposition, chemical vapor deposition, various vapor depositions, electrodeposition, laser coloring, inkjet, letterpress, gravure, screen printing, transfer, and offset printing.

[0171] The low-reflection layer forming process can also be performed before the joining process.

[0172] Step S4 is a firing process.

[0173] In the firing process, the blackening treatment layer 74 is fixed to the metal strip 86 by firing.

[0174] Step S5 is an insulating layer attaching process.

[0175] In the insulating layer attachment process, in order to impart insulation, a resin material is coated on the metal strip 86 by electrostatic powder coating. As a result, a resin layer 72 is formed on the metal strip 86. The outer surface of the metal strip 86 and the blackening treatment layer 74 are covered by the resin layer 72.

[0176] In this way, in the manufacturing process of the conveyor belt 33, by forming the resin layer 72 by electrostatic powder coating, it is possible to suppress the deviation of the thickness dimension of the resin layer 72.

[0177] Further, in the conveyor belt 33, by forming the resin layer 72 by electrostatic powder coating, close adhesion is achieved due to the anchoring effect. Therefore, in the conveyor belt 33, when it is reused or the like, the resin layer 72 can be peeled off from the metal layer 70.

[0178] It should be noted that in the coating method of the resin material, a corona charging electrostatic spraying method, a friction charging electrostatic spraying method, a flow dipping method, a static current flow dipping method, etc. can also be used.

[0179] In addition, in the coating method of the resin material, coating based on spraying, brushing, dispensing, coating by an inkjet method device, dipping, etc. can also be used. In this case, the resin material is not limited to powder, and can also be a liquid such as a resin liquid.

[0180] In addition, the resin layer 72 can also be formed by attaching a resin material formed into a sheet, attaching a heat shrinkable pipe, or electrodepositing a resin material.

[0181] Step S6 is a firing process.

[0182] In the firing process, by performing firing, the resin layer 72 is fixed to the metal strip 86.

[0183] Figure 10 It is a diagram showing the process of cutting the positioning part.

[0184] Step S7 is a positioning part cutting process.

[0185] As Figure 10 shown, in the positioning part cutting process, each positioning part 84 is cut. In the process of cutting the positioning part 84, the positioning part 84 is cut by pressing, for example.

[0186] In addition, for example, the positioning part 84 can also be cut by laser processing, wire electrical discharge machining, etc.

[0187] Step S8 is a snake prevention part forming process.

[0188] As Figure 3 shown, in the snake prevention part forming process, the convex strip 76 is attached to the entire circumference of the inner surface of the metal strip 86 at both ends in the longitudinal direction of the metal strip 86.

[0189] The material of the rib 76 can be polyurethane rubber, natural rubber, nitrile rubber, silicone rubber, fluororubber, acrylic rubber, isoprene rubber, styrene rubber, butadiene rubber, butyl rubber, ethylene propylene rubber, ethylene propylene diene rubber, etc. Additionally, for example, the material of the rib 76 can also be ethylene vinyl acetate rubber, chloroprene rubber, high-strength rubber, chlorinated polyethylene rubber, epichlorohydrin rubber, polysulfide rubber, styrene-based elastomer, olefin-based elastomer, polyester-based elastomer, polyurethane-based elastomer, etc.

[0190] In this way, the conveyor belt 33 is manufactured through the manufacturing processes of steps S1 to S8. Thus, through the manufacturing process of the conveyor belt 33, it is possible to easily and highly accurately manufacture a conveyor belt 33 with low cost and high durability. Moreover, in the printing apparatus 1 equipped with this conveyor belt 33, it is possible to improve the printing quality of the recording surface of the recording paper P.

[0191] The above-described embodiments are merely examples of one aspect of the present invention, and any deformation and application can be made within the scope of the gist of the present invention.

[0192] In the above-described embodiment, the conveying device 30 that conveys the printing medium by the printing apparatus 1 as a recording device is exemplified as the medium conveying device. The conveying device 30 is provided with an optical sensor, and the optical sensor includes: a light emitting unit that emits light toward the conveyor belt 33; and a light receiving unit that receives the light reflected from the conveyor belt 33 side, i.e., the reflected light. However, it is not limited thereto, and the medium conveying device may be any conveying device that conveys any object as a medium and has the above-described optical sensor, and can be applied in all aspects.

[0193] In the above-described embodiment, the printing apparatus 1 is exemplified as the recording device. The printing apparatus 1 only needs to be a device that includes a conveying device for conveying the printing medium and a printing unit for printing on the printing medium. For example, the printing apparatus 1 can be a large-format printer, a printing machine for dyeing, etc.

[0194] In the above-described embodiment, the line head type including the line head 26 is exemplified as the head unit 25, but it is not limited thereto, and it can also be a so-called serial head type that performs recording as the medium moves in the width direction. Additionally, the printing method of the head unit 25 is not limited to the inkjet type.

[0195] In the above-described embodiments, directions such as horizontal and vertical, various numerical values, and shapes, without special limitations, include the so-called equivalent ranges that exhibit the same effects as these directions, numerical values, and shapes.

[0196] Summary of the present disclosure

[0197] Next, the summary of the present disclosure is appended.

[0198] (Supplementary Note 1)

[0199] A multi-layer belt includes: a metal layer formed in a ring shape; a resin layer provided on the metal layer; and a low-reflection layer provided on at least a part of the interface between the metal layer and the resin layer, the light reflectance of which is lower than that of the metal layer.

[0200] Thus, the multi-layer belt can be applied to a device using an optical sensor on the belt, so that the usage range of the multi-layer belt can be broadened.

[0201] (Supplementary Note 2)

[0202] In the multi-layer belt described in Supplementary Note 1, the low-reflection layer is provided on at least a part in a direction intersecting the circumferential direction of the metal layer.

[0203] Thus, the low-reflection layer can be provided in a circular shape only in the necessary part of the multi-layer belt. Therefore, compared with the case where the low-reflection layer is provided on the entire belt in the multi-layer belt, the productivity can be improved.

[0204] (Supplementary Note 3)

[0205] In the multi-layer belt described in Supplementary Note 1 or Supplementary Note 2, the low-reflection layer is formed by coloring.

[0206] Thus, the low-reflection layer can be easily formed in the multi-layer belt.

[0207] (Supplementary Note 4)

[0208] In the multi-layer belt described in any one of Supplementary Notes 1 to 3, the metal layer is formed of austenitic stainless steel.

[0209] Thus, the magnetic influence when the multi-layer belt is used in a device can be suppressed.

[0210] (Supplementary Note 5)

[0211] In the multi-layer belt described in any one of Supplementary Notes 1 to 4, the resin layer is formed of a fluororesin.

[0212] Thus, paper can be electrostatically adsorbed by applying a voltage in the multi-layer belt.

[0213] (Supplementary Note 6)

[0214] A medium conveying device includes a belt conveying unit provided with the multi-layer belt described in any one of Supplementary Notes 1 to 5 and capable of conveying a medium.

[0215] Thus, in the medium conveying device, the multi-layer belt described in any one of Supplementary Notes 1 to 5 can be used as a conveyor belt for conveying a medium.

[0216] (Supplementary Note 7)

[0217] The medium conveying device described in Supplementary Note 6 includes: a charging unit that charges the multi-layer belt; and a static elimination unit that eliminates the charge on the surface of the medium adsorbed on the multi-layer belt due to the charging by the charging unit.

[0218] Thereby, in the medium conveying device, the multi-layer belt described in any one of Supplementary Notes 1 to 5 can be used as a charged conveyor belt.

[0219] (Supplementary Note 8)

[0220] The medium conveying device described in Supplementary Note 6 or Supplementary Note 7 includes an optical sensor capable of detecting the presence or absence of the medium, and the optical sensor is provided at a position facing the low-reflection layer, and the low-reflection layer has a lower reflectivity than the surface of the medium.

[0221] Thereby, in the medium conveying device, the multi-layer belt described in any one of Supplementary Notes 1 to 5 can be used to detect the presence or absence of the medium.

[0222] (Supplementary Note 9)

[0223] The medium conveying device described in Supplementary Note 7 includes an optical sensor capable of detecting the presence or absence of the medium, and the optical sensor is provided at the position of the low-reflection layer, and the low-reflection layer has a lower reflectivity than the surface of the medium.

[0224] Thereby, in the medium conveying device, the multi-layer belt described in any one of Supplementary Notes 1 to 5 can be used to detect the presence or absence of the medium.

[0225] (Supplementary Note 10)

[0226] A recording device includes: a belt conveying unit provided with the multi-layer belt described in any one of Supplementary Notes 1 to 5 and capable of conveying a medium; and a recording unit that records the medium conveyed by the belt conveying unit.

[0227] Thereby, in the recording device, the multi-layer belt described in any one of Supplementary Notes 1 to 5 can be used as a conveyor belt.

[0228] (Supplementary Note 11)

[0229] The recording device described in Supplementary Note 10 includes: a charging unit that charges the multi-layer belt; and a static elimination unit that eliminates the charge on the surface of the medium adsorbed on the multi-layer belt due to the charging by the charging unit, and the recording unit records the medium that passes through the static elimination unit and is conveyed by the multi-layer belt.

[0230] Thereby, in the recording device, the multi-layer belt described in any one of Supplementary Notes 1 to 5 can be used as a charged conveyor belt.

[0231] (Supplementary Note 12)

[0232] The recording device described in Supplementary Note 10 or Supplementary Note 11 includes an optical sensor capable of detecting the presence or absence of the medium, the optical sensor is disposed at a position facing the low-reflection layer, and the low-reflection layer has a reflectivity lower than the surface of the medium.

[0233] Thereby, it is possible to use the multi-layer tape described in any one of Supplementary Notes 1 to 5 in the recording device to detect the presence or absence of the medium.

[0234] (Supplementary Note 13)

[0235] The recording device described in Supplementary Note 11 includes an optical sensor capable of detecting the presence or absence of the medium, the optical sensor is disposed at a position facing the low-reflection layer, and the low-reflection layer has a reflectivity lower than the surface of the medium.

[0236] Thereby, it is possible to use the multi-layer tape described in any one of Supplementary Notes 1 to 5 in the recording device to detect the presence or absence of the medium.

[0237] (Supplementary Note 14)

[0238] A method for manufacturing a tape, in which a plate made of a metal material is formed into a cylindrical shape, and a ring-shaped metal layer is formed by joining the ends of the plate to each other.

[0239] Thereby, according to the method for manufacturing a tape, it is possible to manufacture a tape that is cheaper in terms of materials and manufacturing method than before and has high durability.

[0240] (Supplementary Note 15)

[0241] In the method for manufacturing a tape described in Supplementary Note 14, the ends of the plate are joined by welding them to each other from the outer surface side.

[0242] Thereby, according to the method for manufacturing a tape, it is possible to easily and highly accurately join the metal materials.

[0243] (Supplementary Note 16)

[0244] In the method for manufacturing a tape described in Supplementary Note 14, the ends of the plate are joined by bonding them to each other with an adhesive.

[0245] Thereby, according to the method for manufacturing a tape, it is possible to easily join the metal materials.

[0246] (Supplementary Note 17)

[0247] In the method for manufacturing a tape described in any one of Supplementary Notes 14 to 16, a low-reflection layer with a light reflectivity lower than that of the metal layer is formed on at least a part of the outer surface of the metal layer.

[0248] Thus, according to the manufacturing method of the belt, a belt capable of performing detection based on an optical sensor can be manufactured, and the range of use of the belt can be broadened.

[0249] (Supplementary Note 18)

[0250] In the manufacturing method of the belt described in Supplementary Note 17, the low-reflection layer is formed on at least a part of the outer surface of the metal layer in a direction intersecting the circumferential direction of the metal layer.

[0251] Thus, through the manufacturing method of the belt, a belt capable of performing detection based on an optical sensor can be manufactured throughout the entire circumferential direction of the belt, and the range of use of the belt can be broadened.

[0252] (Supplementary Note 19)

[0253] In the manufacturing method of the belt described in Supplementary Note 17 or Supplementary Note 18, the low-reflection layer is formed by coating a coloring material.

[0254] Thus, according to the manufacturing method of the belt, it is possible to easily form a low-reflection layer on the belt.

[0255] (Supplementary Note 20)

[0256] In the manufacturing method of the belt described in any one of Supplementary Notes 14 to 19, a resin layer is formed by attaching resin to the outer surface of the metal layer and firing.

[0257] Thus, according to the manufacturing method of the belt, a belt capable of electrostatically adsorbing paper by applying a voltage can be manufactured.

[0258] (Supplementary Note 21)

[0259] In the manufacturing method of the belt described in Supplementary Note 20, the resin is attached to the metal layer by electrostatic powder coating.

[0260] Thus, according to the manufacturing method of the belt, the recovery of the powder coating is easy, and the utilization rate of the materials related to belt manufacturing is improved.

[0261] (Supplementary Note 22)

[0262] In the manufacturing method of the belt described in Supplementary Note 20, the resin is attached to the metal layer by coating a resin solution.

[0263] Thus, according to the manufacturing method of the belt, it is possible to easily attach the resin to the metal layer.

[0264] (Supplementary Note 23)

[0265] In the manufacturing method of the belt described in any one of Supplementary Notes 1 to 22, the metal layer is formed of austenitic stainless steel.

[0266] Therefore, according to the manufacturing method of the belt, it is possible to easily form a metal layer by using an inexpensive material with good processability.

[0267] (Supplementary Note 24)

[0268] In the manufacturing method of the belt according to any one of Supplementary Notes 20 to 22, the resin layer is formed of a fluororesin.

[0269] Therefore, according to the manufacturing method of the belt, it is possible to easily provide a resin layer.

Claims

1. A multi-layer belt, characterized in that: have: a metal layer formed in a ring shape; a resin layer disposed on the metal layer; and The low reflection layer is provided at least partially between the metal layer and the resin layer, and the light reflectivity of the low reflection layer is lower than the light reflectivity of the metal layer.

2. The multilayer belt according to claim 1, characterized in that The low-reflection layer is provided at least in a portion in a direction intersecting with a circumferential direction of the metal layer.

3. The multilayer belt according to claim 1 or 2, characterized in that The low reflection layer is formed by coloring.

4. The multilayer belt according to claim 1 or 2, characterized in that The metal layer is formed of austenitic stainless steel.

5. The multilayer belt according to claim 1 or 2, characterized in that The resin layer is formed of a fluorine-based resin.

6. A medium conveying device, characterized in that: The medium conveying device includes a belt conveying unit, The belt conveying section is provided with the multi-layer belt according to claim 1 or 2, and is capable of conveying a medium.

7. The medium conveying device according to claim 6, characterized in that: have: a charging unit for charging the multi-layered belt; and The static eliminating unit removes electric charges adsorbed on the surface of the medium of the multilayer tape due to the charging of the charging unit.

8. The medium conveying device according to claim 6, characterized in that: The medium conveying device is provided with an optical sensor capable of detecting the presence or absence of the medium. The optical sensor is arranged at a position opposite to the low-reflection layer. The reflectivity of the low-reflection layer is lower than the reflectivity of the surface of the medium.

9. The medium conveying device according to claim 7, characterized in that: The medium conveying device is provided with an optical sensor capable of detecting the presence or absence of the medium. The optical sensor is arranged at a position opposite to the low-reflection layer. The reflectivity of the low-reflection layer is lower than the reflectivity of the surface of the medium.

10. A recording device, characterized in that: have: A belt conveying section provided with the multi-layer belt according to claim 1 or 2 and capable of conveying a medium; and The recording unit records on the medium transported by the belt transport unit.

11. The recording device according to claim 10, characterized in that have: a charging unit for charging the multi-layered belt; and a charge removing section for removing charges adsorbed on the surface of the medium of the multilayer tape due to the charging of the charging section, The recording section performs recording on the medium that has passed through the static eliminating section and is conveyed by the multi-layer belt.

12. The recording device according to claim 10, characterized in that The recording device includes an optical sensor capable of detecting the presence or absence of the medium. The optical sensor is arranged at a position opposite to the low-reflection layer. The reflectivity of the low-reflection layer is lower than the reflectivity of the surface of the medium.

13. The recording device according to claim 11, characterized in that The recording device includes an optical sensor capable of detecting the presence or absence of the medium. The optical sensor is arranged at a position opposite to the low-reflection layer. The reflectivity of the low-reflection layer is lower than the reflectivity of the surface of the medium.

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