Method for attaching sheet member to trunk body and package of sheet member

Abstract

To reduce damages to a sheet member in winding onto a drum body as compared with the case an inner surface of the sheet member contacts only an apparatus body in a winding process.SOLUTION: A method of attaching a sheet member 100 to a drum body 52 comprises a temporarily fixing step that temporarily fixes a first attachment member 110 at one end 100A of a sheet member 100 to a first base part 300 of the drum body 52 generally circular in section provided on an apparatus body 11, a winding step that winds the sheet member 100 onto the drum body 52 by rotating the drum body 52, a fixing step that fixes the first attachment member 110 at the one end 100A of the sheet member 100 and a second attachment member 120 at the other end 100B respectively to the first base part 300 and a second base part 350, and a setup step that sets up a subject-of-setup member 500 between a metal layer 150 of the sheet member 100 wound earlier onto the drum body 54 than the winding step and the apparatus body 11.SELECTED DRAWING: Figure 14

Description

[Technical field]

[0001] The present invention relates to a method for attaching a sheet member to a trunk body and a package of sheet members. [Background technology]

[0002] A transfer device having a conveying means for moving a transfer material along a circular movement path and a gripper piece attached to the conveying means, supported by a rotating shaft and rotating relative to a base member, and gripping the leading edge of the transfer material, and transferring an image on an image carrier to the transfer material, has been known for some time (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 58-005769 Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention aims to reduce damage to the sheet material when it is wound around the body of the drum, compared to when the inner surface of the sheet material only comes into contact with the body of the drum during the winding process. [Means for solving the problem]

[0005] The first aspect is a method for attaching a sheet member to a body, the method including: a temporary fixing step of temporarily fixing one end of a sheet member to a first fixed portion of a body that is provided on an apparatus body and has a generally circular cross section; a winding step of rotating the body to wrap the sheet member around the body; a fixing step of fixing one end and the other end of the sheet member to the first fixed portion and the second fixed portion, respectively; and an installation step of installing an installation member between the apparatus body and an inner surface of the sheet member before it is wrapped around the body.

[0006] A second aspect is the method for attaching a sheet member to a trunk body according to the first aspect, in which in the installation step, a packaging material that packages the sheet member is used as the installation target member.

[0007] A third aspect is a method for attaching a sheet member to a trunk body, as described in the first or second aspect, in which, in the temporary fixing process, temporary fixing is performed in a state in which the first fixed portion is positioned upward in the direction of gravity.

[0008] A fourth aspect is a method for attaching a sheet member to a trunk body described in any one of the first to third aspects, in which an attachment member is provided on one end of the sheet member, and a contact surface is provided on the first fixed portion with which the attachment surface of the attachment member comes into contact.

[0009] A fifth aspect is a method for attaching a sheet member to a trunk body as described in the first or second aspect, in which an attachment member is provided on one end of the sheet member, a contact surface is provided on the first fixed portion with which the attachment surface of the attachment member comes into contact, and the temporary fixing process is performed in a state in which the normal direction of the contact surface is between vertically upward and horizontally.

[0010] A sixth aspect is a method for attaching a sheet member to a trunk body described in the fifth aspect, in which the temporary fixing process is performed in a state in which the normal direction of the contact surface is between vertically upward and 45° upward from the horizontal.

[0011] A seventh aspect is a method for attaching a sheet member to a trunk main body described in any one of the fourth to sixth aspects, in which the first fixed portion is provided with a positioning portion that positions the attachment member by being abutted against it in a circumferential direction.

[0012] An eighth aspect is a method for attaching a sheet member to a trunk body as described in the seventh aspect, in which the positioning portion contacts the mounting member in the radial direction of the trunk body when the mounting member is abutted in the circumferential direction, thereby restricting the radial outward movement of the mounting member.

[0013] A ninth aspect is a method for attaching a sheet member to a torso body, as described in any one of the first to eighth aspects, wherein the device body is provided with an operating unit for rotating the torso body, and a confirmation unit capable of confirming the position of the first fixed portion of the torso body is provided near the operating unit.

[0014] A tenth aspect is a package of a sheet member comprising: a sheet member that is wrapped around a trunk body of an apparatus main body and has one end and the other end removably attached to the trunk body; and a packaging material that packages the sheet member and serves as a mounting member that is mounted between the inner surface of the sheet member and the apparatus main body when the sheet member is wrapped around the trunk body. Effect of the Invention

[0015] In the first embodiment of the method for attaching a sheet member to a body, damage to the inner surface of the sheet member when wound onto the body is reduced compared to when the inner surface of the sheet member only comes into contact with the device body during the winding process.

[0016] In the second aspect of the method for attaching a sheet member to a trunk body, the number of parts required for attaching the sheet member to the trunk body is reduced compared to when a separate mounting member is prepared.

[0017] In the third aspect of the method of attaching the sheet member to the trunk body, it is easier to hold one end of the sheet member when temporarily fixing it, compared to when the first fixed portion is located on the lower side.

[0018] In the fourth aspect of the method for attaching the sheet member to the trunk body, the attachment member is easier to hold during temporary fixation compared to when the attachment surface of the attachment member contacts a convex portion.

[0019] In the fifth aspect of the method for attaching the sheet member to the trunk body, the attachment member is more stable during temporary fixing, compared to a state in which the normal direction of the contact surface is diagonally downward.

[0020] In the sixth aspect of the method for attaching a sheet member to a trunk body, in the temporary fixing step, the attachment member is easier to hold during temporary fixing compared to a state in which the normal direction of the contact surface is horizontal.

[0021] In the seventh aspect of the method for attaching the sheet member to the trunk main body, the attachment member is easier to hold during temporary fixation, compared to when the attachment member is free to move in the circumferential direction.

[0022] In the eighth aspect of the method for attaching the sheet member to the trunk body, the attachment member is easier to hold during temporary fixation, compared to when the attachment member is free to move radially outward.

[0023] In the ninth aspect of the method for attaching a sheet member to a trunk body, it is easier to perform the work of attaching the sheet member while operating the operating portion, compared to a case in which a confirmation portion is not provided.

[0024] In the sheet member packaging body of the tenth aspect, the number of parts required for transporting the sheet member is reduced compared to a case in which a mounting member is separately prepared. [Brief description of the drawings]

[0025] [Figure 1] 1 is a schematic diagram illustrating a configuration of an image forming apparatus according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view showing a configuration of a transfer body according to the present embodiment. [Diagram 3] FIG. 2 is a perspective view illustrating a configuration of a fixing device according to the embodiment. [Figure 4] FIG. 2 is a perspective view showing a gripper according to the embodiment. [Diagram 5] FIG. 11 is a schematic diagram illustrating a configuration of another image forming apparatus according to the present embodiment. [Figure 6] FIG. 2 is a perspective view of a transfer cylinder according to the embodiment. [Figure 7] FIG. 2 is a perspective view of a sheet member according to the embodiment. [Figure 8] FIG. 11 is an enlarged perspective view of an axial end portion on the other side of the recess of the transfer cylinder according to the embodiment. [Figure 9] 9 is an enlarged perspective view of an end portion in the axial direction on the other side of the recess of the transfer cylinder according to the embodiment, the end being on the opposite side to FIG. 8. [Figure 10]9 is an enlarged perspective view of the same end portion of the recess of the transfer cylinder according to the embodiment as in FIG. 8 . [Figure 11] FIG. 2 is an end view of the transfer cylinder according to the embodiment, as viewed from the axial direction. [Figure 12] FIG. 2 is a plan view of the sheet member according to the embodiment, as viewed from the metal layer side. [Figure 13] 12 is an enlarged end view of one side of the recess in FIG. 11. FIG. [Figure 14] 10 is a front view showing an installation operation for attaching the sheet member to the trunk main body according to the embodiment. FIG. [Figure 15] FIG. 2 is a front view illustrating operation buttons and a confirmation unit of the image forming apparatus according to the embodiment. [Figure 16] 1 is a perspective view of a state in which a sheet member package in which the sheet member according to the embodiment is packaged is placed in a shipping box. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. For convenience of explanation, the direction along the arrow H in FIG. 1 is defined as the up-down direction of the image forming apparatus 10, the direction along the arrow W is defined as the width direction of the image forming apparatus 10, and the direction along the arrow D is defined as the front-rear direction of the image forming apparatus 10.

[0027] 1, the image forming apparatus 10 is, as an example, an inkjet type that forms an ink image, as an example of an image, on a recording medium P. The image forming apparatus 10 includes an image forming section 12, a conveying section 14, and a fixing device 90.

[0028] Hereinafter, the image forming section 12, the transport section 14, and the fixing device 90 of the image forming apparatus 10 will be described, and then the transfer cylinder 50 as an example of a cylinder member will be described.

[0029] (Image forming section) 1, the image forming unit 12 has a function of forming an ink image on a recording medium P. More specifically, the image forming unit 12 has a transfer belt 30 as an example of an intermediate transfer body, a plurality of rolls 22 (two rolls in this embodiment), an opposing roll 24 as an example of a rotating member, an adhesive layer forming device 26, a particle supplying device 18, a discharge head 20, a transfer body 40, and a cleaner 28.

[0030] The transfer belt 30 is formed in an endless shape and is wound around the two rolls 22 and the opposing roll 24 so as to assume an inverted triangular posture when viewed from the front-rear direction. The transfer belt 30 moves in a circular motion in the direction of the arrow A by at least one of the two rolls 22 being rotationally driven.

[0031] The adhesive layer forming device 26, particle supplying device 18, ejection head 20, transfer body 40 and cleaner 28 are arranged on the outer surface side of the transfer belt 30, in this order, from the upstream side in the rotation direction of the transfer belt 30 (hereinafter referred to as the "belt rotation direction").

[0032] The adhesive layer forming device 26 is disposed at one end of the horizontal portion of the transfer belt 30 in the inverted triangular posture on one side in the device width direction (left side in the figure). The adhesive layer forming device 26 contains an adhesive therein, and forms an adhesive layer (not shown) by applying the adhesive to the outer peripheral surface of the circulating transfer belt 30. Note that, for example, glue, organic solvent, etc. are used as the adhesive.

[0033] The particle supplying device 18 is disposed downstream (on the right side in the drawing) in the belt rotation direction relative to the adhesive layer forming device 26 in the horizontal portion of the transfer belt 30. The particle supplying device 18 contains therein ink receptive particles 16 capable of receiving ink droplets, and supplies the ink receptive particles 16 to the transfer belt 30 on which the adhesive layer is formed.

[0034] In other words, the ink receptive particles 16 supplied onto the transfer belt 30 by the particle supply device 18 are adhered to the adhesive layer by the adhesive force of the adhesive layer, forming an ink receptive particle layer 16A on the transfer belt 30.

[0035] The ejection head 20 is disposed downstream (on the right side in the drawing) of the particle supplying device 18 in the belt rotation direction in the horizontal portion of the transfer belt 30. A plurality of ejection heads 20 are provided so as to form ink images for each color. In this embodiment, ejection heads 20 of four colors, yellow (Y), magenta (M), cyan (C), and black (K), are provided. In FIG. 1, the alphabetic characters Y, M, C, and K are added after the reference numeral 20 to correspond to each of the above colors.

[0036] Furthermore, the ejection heads 20 of each color eject ink droplets from nozzles (not shown) onto the ink receptive particle layer 16A by a known method such as a thermal method or a piezoelectric method to form an ink image based on image data. In other words, the ink droplets ejected from the ejection heads 20 of each color are received by the ink receptive particle layer 16A to form an ink image.

[0037] The transfer body 40 is disposed below the transfer belt 30. As shown in Fig. 2, the transfer body 40 has a transfer cylinder 50 disposed so that its axial direction is the same as that of the opposing roll 24. The transfer cylinder 50 is disposed opposite the transfer belt 30, and forms a pinch region T in which the transfer belt 30 is sandwiched between the transfer cylinder 50 and the opposing roll 24.

[0038] In this embodiment, the ink image formed on the ink receptive particle layer 16A is transported to the sandwich region T by the rotation of the transfer belt 30, and the recording medium P is transported to the sandwich region T by the transport section 14. The transfer cylinder 50 transfers the ink image to the recording medium P by sandwiching and pressurizing the recording medium P and the ink image transported to the sandwich region T with the transfer belt 30.

[0039] 1, the conveying direction of the recording medium P is indicated by an arrow X. In addition, when the recording medium P and the ink image are sandwiched and pressed with the transfer belt 30 in the pinching region T, the recording medium P and the ink image may be heated by the transfer cylinder 50. In addition, a recess 54 is formed in a part of the outer circumferential surface of the transfer cylinder 50 in which a gripper 36 and a support member 38, which will be described later, are housed.

[0040] 2, a pair of sprockets 32 are provided on both axial ends of the transfer cylinder 50. The pair of sprockets 32 are arranged coaxially with the transfer cylinder 50 and are configured to rotate integrally with the transfer cylinder 50. The transfer cylinder 50 is configured to be rotated by a drive unit (not shown). A chain 34, which will be described later, is wound around the pair of sprockets 32.

[0041] 1, the cleaner 28 is disposed downstream of the nip region T in the belt rotation direction and upstream of the adhesive layer forming device 26 in the belt rotation direction. The cleaner 28 has a blade 28A that contacts the outer circumferential surface of the transfer belt 30. As the transfer belt 30 rotates, the cleaner 28 uses the blade 28A to remove the adhesive layer, the ink receptive particles 16, the ink, and other foreign matter (for example, paper powder when the recording medium P is paper) that passes through the nip region T and remains on the transfer belt 30.

[0042] The opposing roll 24 can be moved between a contact position where it contacts the transfer cylinder 50 and a separation position where it is separated from the transfer cylinder 50 by a transfer movement mechanism (not shown) using a cam or the like. To be more specific, the opposing roll 24 is always pressed or pulled to the contact position by the elastic force of an elastic member such as a spring, and is configured to move to the separation position against that elastic force by the transfer movement mechanism.

[0043] (Fixing device)

[0044] 1, the fixing device 90 is a device that fixes an ink image transferred to a recording medium P to the recording medium P. Specifically, the fixing device 90 has a pressure member 42 and a heating roll 92, which are disposed downstream in the conveying direction of the recording medium P in the conveying section 14.

[0045] 3, the pressure member 42 has a pressure roll 44 arranged so that its axial direction is the same as that of the transfer cylinder 50, and a pair of sprockets 48 are provided on both axial ends of the pressure roll 44. The pair of sprockets 48 are arranged coaxially with the pressure roll 44 and are configured to rotate integrally with the pressure roll 44. A chain 34, which will be described later, is wound around the pair of sprockets 48.

[0046] As shown in Fig. 1, the heating roll 92 and the pressure roll 44 are arranged vertically side by side. That is, the heating roll 92 is arranged above the pressure roll 44. The heating roll 92 has a heat source 90A (see Fig. 1) such as a halogen lamp inside. In the following, the position where the recording medium P is sandwiched between the heating roll 92 and the pressure roll 44 is referred to as a sandwich position NP.

[0047] The heating roll 92 can be moved between a contact position where it contacts the pressure roll 44 and a separated position where it is separated from the pressure roll 44 by a fixing movement mechanism (not shown) using a cam or the like. To be more specific, the heating roll 92 is always pressed or pulled to the contact position by the elastic force of an elastic member such as a spring, and is configured to move to the separated position against that elastic force by the fixing movement mechanism. At the contact position, the heating roll 92 is configured to sandwich the recording medium P between itself and the pressure roll 44.

[0048] In this embodiment, the heating roll 92 is rotated and the pressure roll 44 is rotated accordingly, but both the heating roll 92 and the pressure roll 44 may be rotated. In addition, a recess 46 is formed in a part of the outer circumferential surface of the pressure roll 44 to accommodate a gripper 36 and a support member 38 described later.

[0049] (Transportation section) As shown in Figs. 1 to 3, the transport unit 14 has a function of transporting the recording medium P and passing it through the pinch region T and the pinch position NP. The transport unit 14 has a pair of chains 34 and a gripper 36. The pair of chains 34 are an example of a driving force transmission member, and the gripper 36 is an example of a holding member that holds the leading end of the recording medium P. Note that in Fig. 1, the chains 34 and the gripper 36 are illustrated in a simplified form.

[0050] As shown in Fig. 1, each of the pair of chains 34 is formed in a loop shape. Then, as shown in Fig. 2 and Fig. 3, the pair of chains 34 are arranged at a distance from each other in the apparatus depth direction. That is, the pair of chains 34 are wound around a pair of sprockets 32 coaxially provided on the transfer cylinder 50 and a pair of sprockets 48 coaxially provided on the pressure roll 44, respectively.

[0051] When the transfer cylinder 50 is rotationally driven by a drive unit (not shown), the pair of sprockets 25 are rotationally driven together in a rotation direction B (arrow B direction), causing the chain 34 to rotate in a circumferential direction C (arrow C direction). This also causes the pressure roll 44 to rotate. In other words, the rotational driving force of the transfer cylinder 50 is transmitted to the pressure roll 44 by the pair of chains 34 that move in the circumferential direction C (see FIG. 1).

[0052] 2 and 3, a support member 38 to which a gripper 36 is attached is suspended in the device depth direction between the pair of chains 34. A plurality of support members 38 (three are shown in FIG. 1) are provided, and each support member 38 is fixed to the pair of chains 34 at a predetermined interval along the circumferential direction of the chains 34 (circumferential direction C).

[0053] The grippers 36 are attached to the support members 38 in a line at predetermined intervals along the depth direction of the device. That is, each gripper 36 is attached to the chain 34 via each support member 38. Each gripper 36 has a holding function of holding the leading end of the recording medium P.

[0054] 4, the gripper 36 has a plurality of claws 36A and a plurality of claw bases 36B. The gripper 36 is configured to hold the recording medium P by pinching the tip of the recording medium P between each claw 36A and each claw base 36B. Therefore, the gripper 36 can be said to be an example of a pinching portion that pinches the recording medium P in the thickness direction.

[0055] Gripper 36 is disposed downstream in the transport direction of recording medium P and holds the leading end of recording medium P from the downstream in the transport direction of recording medium P. Gripper 36 is configured such that claw 36A is pressed against claw base 36B by a spring or the like and claw 36A is moved away from claw base 36B by the action of a cam or the like.

[0056] In this manner, in the conveying section 14, the leading end of the recording medium P sent from a storage section (not shown) is held by the gripper 36. In the conveying section 14, the chain 34 moves in the circumferential direction C with the gripper 36 holding the leading end of the recording medium P, thereby moving the gripper 36 to convey the recording medium P, and the recording medium P passes through the clamping region T together with the gripper 36 while still being held by the gripper 36.

[0057] In the portion where the chain 34 is wound around the sprocket 32, the gripper 36 is accommodated in a recess 54 of the transfer cylinder 50 and moves together with the transfer cylinder 50 in the rotation direction of the transfer cylinder 50. Similarly, in the portion where the chain 34 is wound around the sprocket 48, the gripper 36 is accommodated in a recess 46 of the pressure roll 44 and moves together with the pressure roll 44 in the rotation direction of the pressure roll 44.

[0058] Here, in the present embodiment, the conveying section 14 is configured to convey the recording medium P toward the clamping position NP with the gripper 36 holding the leading end of the recording medium P in a state where the heating roll 92 is located at the separated position. Then, when the conveying section 14 conveys the recording medium P to the clamping position NP, it releases the holding of the leading end of the recording medium P.

[0059] That is, the conveying section 14 is configured to release the grip of the leading end of the recording medium P after the gripper 36 passes through the pinching position NP. At this time, the pressure roll 44 is configured to maintain a rotating state, in other words, a state in which the chain 34 is moving in a circular motion.

[0060] Furthermore, the fact that the recording medium P has been transported to the pinch position NP is detected by a detection unit provided upstream of the pinch position NP in the transport direction based on the time from when the detection unit detects the leading edge of the recording medium P. The detection target of the detection unit may be the support member 38 or the gripper 36 instead of the leading edge of the recording medium P.

[0061] In addition, after the gripper 36 passes through the pinch position NP and the gripper 36 releases its hold on the leading end of the recording medium P, the heating roll 92 starts moving from the separation position to the contact position, and sandwiches the recording medium P transported to the pinch position NP between the heating roll 92 and the pressure roll 44. Then, with the recording medium P sandwiched between the heating roll 92 and the pressure roll 44, the heating roll 92 starts rotating to transport the recording medium P.

[0062] In addition, the heating roll 92 may start moving from the separated position to the contact position before the gripper 36 releases its hold on the leading end of the recording medium P, and the clamping of the recording medium P between the heating roll 92 and the pressure roll 44 may be completed after the gripper 36 releases its hold on the leading end of the recording medium P.

[0063] In this way, in the fixing device 90, the recording medium P is transported while being sandwiched between the heating roll 92 and the pressure roll 44, and the ink image transferred to the recording medium P is fixed to the recording medium P by heating and pressurizing the recording medium P.

[0064] (Transfer cylinder) Next, the transfer cylinder 50 will be described.

[0065] 6 and 11, a transfer cylinder 50 as an example of a cylinder member has a cylinder main body 52 and a sheet member 100 wrapped around the cylinder main body 52. ​​Note that, below, the axial direction, radial direction, and circumferential direction of the cylinder main body 52 may be simply referred to as the "axial direction," the "radial direction," and the "circumferential direction."

[0066] In the following description, the upstream side in the rotation direction (arrow B direction) of the transfer cylinder 50 may simply be referred to as "upstream", and the downstream side in the rotation direction (arrow B direction) of the transfer cylinder 50 may simply be referred to as "downstream". When the circumferential direction and axial direction are used in the description of the sheet member 100, they refer to the directions in a state in which the sheet member 100 is wrapped around the cylinder main body 52. ​​In addition, the direction along the short side of the rectangular sheet member 100 in a plan view is referred to as the width direction, and the direction along the long side is referred to as the length direction.

[0067] The trunk body 52 has a single recess 54 formed along the axial direction in a portion of its circumference, and has a generally circular cross section, specifically, a generally circular outer shape in a cross section perpendicular to the axial direction. The recess 54, which is an example of a recessed portion, has a depth along the radial direction of the trunk body 52. ​​The trunk body 52 is made of a metal material such as stainless steel or aluminum. In this embodiment, the depth direction of the recess 54 coincides with the radial direction. However, the depth direction and the radial direction do not need to coincide. The depth direction may be inclined, for example, by about 5° to 10° with respect to the radial direction.

[0068] The trunk main body 52 is formed such that its length along the axial direction is longer than the width along the axial direction of the sheet member 100, and the sheet member 100 is wrapped around with its widthwise center aligned with the axial center of the trunk main body 52. ​​The sheet member 100 has a width larger than the maximum width of the recording medium P (see FIG. 4).

[0069] Incidentally, the term "sheet-like" refers to a shape such as paper or a thin plate, and a thickness that allows it to be deformed along the outer periphery of the trunk main body 52. ​​The length in the circumferential direction (lengthwise direction) of the sheet member 100 in this embodiment is approximately the same as the length in the circumferential direction of the trunk main body 52 excluding the recessed portion 54.

[0070] As shown in Figure 11, the sheet member 100 has a metal layer 150 that is wrapped around and in contact with the outer peripheral surface of the trunk main body 52, and an outer layer 102 that is laminated and adhered to the outer peripheral surface of the metal layer 150 (see also Figures 7 to 10, etc.).

[0071] The metal layer 150 in this embodiment is made of a metal material such as stainless steel, aluminum, copper, etc. The thickness of the metal layer 150 in this embodiment is, for example, 0.1 mm.

[0072] The outer layer 102 in this embodiment is made of a conductive resin material such as solid rubber such as nitrile rubber, chloroprene rubber, ethylene propylene diene rubber, acrylonitrile butadiene rubber, silicone rubber, etc., polyimide, polyamide imide, polyurethane, polyethylene, and mixtures thereof, etc. The thickness of the outer layer 102 in this embodiment is thicker than that of the metal layer 150, and is, for example, 7.0 mm.

[0073] As shown in Figures 6, 7, 10, 11, 12 and 13, a first mounting member 110 is provided at one end 100A of the sheet member 100 in the longitudinal direction, and a second mounting member 120 is provided at the other end 100B of the sheet member 100 in the longitudinal direction.

[0074] In this embodiment, the first mounting member 110 is joined to the inner surface of the sheet member 100, i.e., the metal layer 150, by adhesive, double-sided tape, welding, or the like. The first mounting member 110 is in the form of a plate that is long in the axial direction and has a thickness direction in the radial direction. The first mounting member 110 is made of a metal material such as stainless steel or aluminum.

[0075] 12, the first mounting member 110 has a pair of protruding portions 112 protruding from the sheet member 100 on both sides in the axial direction, and a central portion 113 formed between the pair of protruding portions 112. The central portion 113 is disposed within the range of the sheet member 100 when viewed in the thickness direction of the sheet member 100, in other words, when viewed in the radial direction. In other words, when viewed in the thickness direction of the sheet member 100, the entire central portion 113 overlaps with the sheet member 100. Note that in this embodiment, the downstream end of the sheet member 100 and the downstream end of the first mounting member 110 overlap with each other when viewed in the thickness direction of the sheet member 100.

[0076] A first through hole 115 through which a mounting screw 60 (see FIGS. 6, 10, and 11) is inserted is formed in the pair of overhanging portions 112. In this embodiment, the first through hole 115 is U-shaped with the other circumferential side open.

[0077] Also, as shown in Figures 7 and 11, on one circumferential side (upstream side) of the first mounting member 110, a protrusion 114 is formed which protrudes to one side and has a three-shaped shape when viewed from the axial direction (see also Figure 10).

[0078] 7 and 12, the other end 100B of the sheet member 100 has an end 152 formed where the metal layer 150 extends further in the circumferential direction than the outer layer 102 (see also FIGS. 10 and 11). The end 152 of the metal layer 150 has a plurality of U-shaped fixing grooves 154, a plurality of second through holes 200B, a plurality of positioning holes 212B and a positioning hole 210B formed at intervals in the axial direction. Hereinafter, the "end 152 of the metal layer 150" may be referred to as the "metal layer end 152".

[0079] In this embodiment, second through hole 200B is U-shaped with one circumferential side open. Positioning holes 212B are multiple elongated holes that are long in the axial direction, and positioning hole 210B is a circular hole and is an example of a fitting portion.

[0080] 6 and 8 to 11, the second mounting member 120 has a fixing plate 124 that is long in the axial direction and a fixed member 122 that is substantially rectangular prism-shaped. The metal layer end 152 of the other end 100B of the sheet member 100 is sandwiched between the fixing plate 124 and the fixed member 122, and is fixed to the second mounting member 120 by fastening them together with fixing screws 70 (see FIG. 6) that are passed through fixing grooves 154 (see FIG. 7 and FIG. 12).

[0081] As shown in Figures 8 to 10, fixing plate 124 has positioning holes 210A (see Figures 8 and 10), positioning holes 212A (see Figure 9), second through holes 200A, and guide holes 220A formed side by side and spaced apart in the axial direction. Fixed member 122 has second through holes 200C and guide holes 220C formed side by side and spaced apart in the axial direction. Fixed member 122 also has positioning pins 211 (see Figures 8 and 10) and positioning pins 213 (see Figure 9) that protrude outward in the depth direction (see also Figure 6).

[0082] When the metal layer end 152 is sandwiched between the fixing plate 124 and the fixed member 122 and fastened with the fixing screw 70, the second through hole 200A, the second through hole 200B, and the second through hole 200C are formed in the same position and with approximately the same size, and they overlap. Similarly, the guide hole 220A and the guide hole 220C are formed in the same position and with approximately the same size, and they overlap. The guide hole 220A and the guide hole 220C are formed along the radial direction, and have a circular cross-sectional shape.

[0083] In addition, when the metal layer end 152 is sandwiched between the fixing plate 124 and the fixed member 122 and fastened with the fixing screw 70, the positioning holes 210A, 212A and the positioning holes 210B, 212B are formed in the same position and of approximately the same size, and they overlap.

[0084] As shown in Fig. 9, the positioning pin 213 is formed at the same position as the positioning holes 212A, 212B and is passed through them. Also, as shown in Fig. 8 and Fig. 10, the positioning pin 211 is formed at the same position as the positioning holes 210A, 210B and is fitted into them. This positions the metal layer end 152 on the second mounting member 120 in the circumferential and axial directions.

[0085] As shown in Fig. 11 and Fig. 13, a first base portion 300 is provided on one circumferential side (upstream side) in the recess 54 of the trunk main body 52 as an example of a first fixed portion to which the first mounting member 110 of one end 100A of the sheet member 100 is attached (see also Fig. 6 and Fig. 10). The first base portion 300 is configured to have a main body portion 310 and a wall portion 320 joined to one side of the main body portion 310 (see also Fig. 10). As shown in Fig. 10, the main body portion 310 protrudes axially outward beyond the wall portion 320. As shown in Fig. 11 and Fig. 13, the wall portion 320 extends radially outward beyond a contact surface 310A of the main body portion 310, which will be described later.

[0086] The main body 310 constituting the first base 300 has a contact surface 310A that contacts the radially inner mounting surface 110A (see also FIG. 12) of the first mounting member 110. The wall 320 has an abutment surface 320A against which the inclined surface 114A of the protruding portion 114 (see also FIG. 6 and FIG. 10) of the first mounting member 110 abuts. The abutment surface 320A is inclined toward the other circumferential side toward the radially outer side. In other words, a recess 302 is formed on one circumferential side of the first base 300 as an example of a positioning portion having a triangular cross section when viewed from the axial direction.

[0087] As shown in Figures 6 and 10, one end 100A of the sheet member 100 is attached to the first base portion 300 provided in the recess 54 by screwing it to both axial ends of the main body portion 310 of the first base portion 300 provided on one side within the recess 54 of the trunk main body 52 using mounting screws 60 passed through a first through hole 115 formed in the protruding portion 112 of the first mounting member 110 (see also Figures 7 and 12).

[0088] 11 and 13, the mounting surface 110A of the first mounting member 110 is in contact with the contact surface 310A of the first base portion 300. In addition, the protruding portion 114 of the first mounting member 110 is inserted into the recessed portion 302 and abuts against it in the circumferential direction, and the inclined surface 114A abuts against the abutting surface 320A.

[0089] The first mounting member 110 can be removed from the first base portion 300 by removing the mounting screw 60. As described above, the first through hole 115 in this embodiment is U-shaped with the other circumferential side open. Therefore, when the mounting screw 60 passed through the first through hole 115 is loosened, the first mounting member 110 can move relatively to the other circumferential side (downstream side).

[0090] As shown in Figures 6 and 8 to 11, a second base portion 350 as an example of a second fixed portion to which the second mounting member 120 of the other end portion 100B of the sheet member 100 is attached is provided on the other circumferential side (downstream side) within the recess 54 of the trunk main body 52.

[0091] In this embodiment, the second stand 350 is joined to a support portion 640 (see FIGS. 9 and 11) provided in the recess 54. The second stand 350 is L-shaped when viewed in the axial direction, and is provided with a guide pin 352 that protrudes radially outward. As shown in FIG. 6, the guide pins 352 are provided on both sides in the axial direction (see also FIGS. 8 and 9).

[0092] Then, the guide pin 352 of the second base portion 350 provided in the recess 54 of the trunk main body 52 is passed through the guide holes 220A, 220C (see Figures 8 to 10) of the second mounting member 120, thereby positioning the second mounting member 120 in the circumferential and axial directions so as to be movable radially.

[0093] Furthermore, a tension screw 72 (see FIG. 6) as an example of a tension mechanism passed through the second through holes 200A, 200B, 200C is screwed into the second base portion 350, whereby the second mounting member 120 moves in the depth direction along the guide pin 352 and the guide holes 220A, 220C and is fixed. As a result, the metal layer end portion 152 of the sheet member 100 is pulled in the depth direction, tension is applied to the metal layer 150, and the second mounting member 120 is attached to the second base portion 350. Note that the head portion 72A (see FIG. 6) of the tension screw 72 is larger than the second through holes 200A, 200B, 200C.

[0094] The second mounting member 120 can be removed from the second base 350 by removing the tensioning screw 72. As described above, the second through-holes 200A, 200B, and 200C in this embodiment are U-shaped with one circumferential side open. Therefore, when the tensioning screws 72 passed through the second through-holes 200A, 200B, and 200C are loosened, the second mounting member 120 can move relatively to the other circumferential side.

[0095] 10 and 12, in the sheet member 100 of this embodiment, the axial center position of the first through hole 115 of the first mounting member 110 is formed at a position a distance L from the axial center position of the positioning hole 210B formed in the metal layer end portion 152. In other words, the axial center position of the first through hole 115 of the first mounting member 110 is set based on the axial center position of the positioning hole 210B formed in the metal layer end portion 152.

[0096] (How to install the seat components) Next, a method for attaching the sheet member 100 to the trunk main body 52 will be described.

[0097] Maintenance work such as the installation of the sheet member 100 is performed with the transport unit including the transfer cylinder 50 pulled out to the front side of the apparatus. This transport unit constitutes a part of the apparatus main body 11.

[0098] 15, an operation button 510 as an example of an operation unit is provided on the device body 11 of the image forming device 10. When an operator presses this operation button 510, the transfer cylinder 50 rotates in a direction B (see FIG. 1, etc.).

[0099] As shown in Fig. 14, frames 600 and 610 constituting the device main body 11 are provided on the outer side in the W direction of the transfer cylinder 50 of the image forming device 10. The frames 600 and 610 are made of sheet metal and have a rectangular frame shape. The frame 610 is joined to the lower part of the outer wall surface in the W direction of the frame 602. Note that the groove width in the circumferential direction of the recess 54 in Figs. 14, 13, etc. is illustrated as being wider in the circumferential direction than it actually is.

[0100] First, a worker (not shown) removes a sheet member package 810, which is a sheet member 100 shown in Fig. 16 packed in a film-like packaging material 820, from a transport box 800 made of cardboard or the like. In Fig. 16, the transport box 800 is shown by an imaginary line (two-dot chain line). Then, the worker removes the sheet member 100 from the packaging material 820. Note that the packaging material 820 has a function of protecting the sheet member 100 when it is transported in the transport box 800.

[0101] In this embodiment, as shown in Fig. 12 etc., the sheet member 100 is packaged with the first attachment member 110 attached thereto. Therefore, as shown in Fig. 12 etc., the worker attaches the second attachment member 120 to the metal layer end 152 of the other end 100B of the sheet member 100. Specifically, the metal layer end 152 is sandwiched between the fixing plate 124 and the fixed member 122 and fastened with the fixing screw 70. Note that the sheet member 100 may be packaged with the second attachment member 120 attached in advance.

[0102] 14, the worker uses the packaging material 820 that has been used to pack the sheet member 100 as is or processes it into an appropriate size to form the installation member 500. The friction coefficient of the packaging material 820 of this embodiment, i.e., the installation member 500, is smaller than that of the frame 600 and the frame 610 made of sheet metal.

[0103] The worker fixes the installation member 500 to the frame 600 and the frame 610 of the device body 11 of the image forming device 10. Specifically, the worker fixes the installation member 500 to the upper end portion 602 of the frame 600 and the side portion 612 of the frame 610 with double-sided tape or the like. At this time, the worker fixes the installation member 500 so that no part of the frame 600 and the frame 610 is exposed to the outside or upper side in the W direction. Note that, for ease of understanding, the thickness of the installation member 500 is illustrated in FIG. 14 as being larger than the actual thickness.

[0104] The operator presses the operation button 510 shown in Fig. 15, rotates and stops the transfer cylinder 50 so that the first base part 300 on one side of the recess 54 of the transfer cylinder 50 is above in the direction of gravity, and the contact surface 310A faces upward and is horizontal, as shown in Fig. 14 (also see Fig. 13). In other words, the transfer cylinder 50 is rotated and stopped so that the normal direction of the contact surface 310A faces vertically upward. "The first base part 300 is above in the direction of gravity" means that the first base part 300 is above the horizontal direction.

[0105] It is most preferable that the normal direction of the contact surface 310A is vertically upward, but it may be other than this. However, it is preferable that the normal direction of the contact surface 310A is between the vertically upward direction and the horizontal direction to the right in the figure, and it is more preferable that the normal direction of the contact surface 310A is between 45° upward from the horizontal direction to the right, and it is more preferable that the normal direction of the contact surface 310A is 60° or more upward from the horizontal direction to the right. Note that "between the A direction (A orientation) and the B direction" is an expression that includes the A direction and the B direction. Also, the allowable range of each angle mentioned above is ±3°. In other words, in the case of 45°, it is sufficient if it is 45°±3°.

[0106] The worker places the attachment surface 110A of the first attachment member 110 at one end 100A of the sheet member 100 on the contact surface 310A of the first stand portion 300 so that the surfaces are in contact with each other.

[0107] At this time, as shown in FIG. 14, the other side of the sheet member 100 hangs down due to its own weight, and the protrusion 114 of the first mounting member 110 abuts against and is held in the recess 302 of the first base portion 300 (see also FIG. 13).

[0108] Then, the worker passes the mounting screw 60 through the first through-hole 115 formed in the protruding portion 112 (see also FIGS. 7 and 12) of the first mounting member 110 and screws it in. At this time, the mounting screw 60 is left in a temporary fixing state without being tightened.

[0109] In this state, as described above, the sheet member 100 sags due to its own weight, and the metal layer 150 comes into contact with the mounted member 500. In other words, the mounted member 500 is mounted between the metal layer 150 of the sheet member 100 and the frames 600, 610.

[0110] The operator presses the operation button 510 shown in Fig. 15, and increments the transfer cylinder 50 in the direction of arrow B as shown in Fig. 14, winding up the sheet material 100 around the cylinder main body 52. ​​At this time, the metal layer 150 constituting the inner surface of the sheet material 100 comes into contact with and rubs against the installation target member 500 while being wound up (see arrow K). Therefore, the sheet material 100 does not come into contact with and is rubbed against the corners 604 of the frame 600 and the corners 614 of the frame 610, etc.

[0111] After the body main body 52 has rotated once, the worker stops the rotation and, as shown in Figures 6 and 11, passes the guide pin 352 of the second base portion 350 provided in the recess 54 of the body main body 52 through the guide holes 220A, 220C of the second mounting member 120 at the other end 110B of the sheet member 100.

[0112] The worker tightens the mounting screw 60 and threads the tensioning screw 72 through the second through holes 200A, 200B, 200C and into the second base portion 350, thereby applying tension to the metal layer 150 and attaching the second mounting member 120 to the second base portion 350.

[0113] 15 in this embodiment is located away from the transfer cylinder 50 (see FIG. 1, etc.). Therefore, near the operation button 510, a confirmation unit 520 is provided for confirming the rotation angle of the first stand 300 (see FIG. 14, etc.) provided on one side of the transfer cylinder 50 in the circumferential direction.

[0114] Note that "close to operation button 510" means that the distance between them in direction W (see FIG. 1) when viewed from direction D (see FIG. 1) is close, specifically, the distance between them in direction W is within approximately 30 cm. From another perspective, it is the range within which confirmation unit 520 can be seen by an operator while operating operation button 510. In short, it is sufficient that confirmation unit 520 is located in a position that is easier to see than first platform 300 when an operator operates operation button 510.

[0115] The confirmation section 520 displays scales 521, 522, 523, 524, etc., which correspond to the rotation angle when the normal direction of the contact surface 310A of the first base section 300 (see FIG. 14, etc.) is vertically upward, i.e., 0°, and the position of the gripper 36. The direction opposite to the B direction is a - (negative) angle.

[0116] For example, when the gripper 36 is located at the 0° position of the scale 523, the contact surface 310A of the first base 300 is at 0°, that is, the normal direction of the contact surface 310A is vertically upward. When the gripper 36 is located at the -90° position of the scale 521, the first base 300 is at -90°, that is, the normal direction of the contact surface 310A is horizontally to the right in the figure. In this way, the operator moves the transfer cylinder 50 in an increment while watching the scales 521, 522, 523, and 524 of the confirmation unit 520.

[0117] In this embodiment, the scales 521, 522, 523, and 524 of the confirmation unit 520 are stickers attached to the housing 11, but are not limited to this. The scales 521, 522, 523, and 524 may be written directly on the housing 11 with an oil-based marker or the like, or may be marked by scratching directly on the housing 11.

[0118] 15 is a schematic illustration, and intervals between the scales 521, 522, 523, and 524 of the confirmation section 520 are different from the actual scale. The scales may be divided more finely. Alternatively, there may be only the 0° scale 523. When there is only the 0° scale 523, the 0° indication may not be required.

[0119] The confirmation unit 520 is required to know at least the position of the first stand unit 300 (see FIG. 14 and the like) when the attachment work of the sheet member 100 is started.

[0120] (Action of this embodiment) Next, the operation of this embodiment will be described.

[0121] When the transfer cylinder 50 is rotated to wind up the sheet material 100 around the cylinder main body 52, the metal layer 150 constituting the inner surface of the sheet material 100 comes into contact with and rubs against the installed member 500 while being wound up. Therefore, the sheet material 100 does not come into contact with and is rubbed against the corners 604 of the frame 600 and the corners 614 of the frame 610, etc. Therefore, damage to the metal layer 150 of the sheet material 100 during winding is suppressed or prevented. In addition, the sheet material 100 does not come into contact with and get caught on the corners 604 of the frame 600 and the corners 614 of the frame 610, etc., and is smoothly wound up.

[0122] In other words, compared to a case where the metal layer 150 of the sheet member 100 contacts only the frames 600, 610, etc. of the device main body 11 without providing the mounting member 500, damage to the metal layer 150 of the sheet member 100 when wound around the trunk main body 52 is reduced and the sheet member 100 is not caught on these, allowing the sheet member to be wound up smoothly.

[0123] As a result, the adhesion of the sheet member 100 to the trunk main body 52 is improved.

[0124] Furthermore, since the mounting member 500 uses the packaging material 820 that packs the sheet member 100, the number of parts is reduced compared to when the mounting member 500 is prepared separately.

[0125] In addition, the first base portion 300 of the recess 54 of the trunk main body 52 is held in an upper position for temporary fixing to the first base portion 300 of the first attachment member 110 of one end portion 100A of the sheet member 100. Therefore, compared to the case where the first base portion 300 of the recess 54 is positioned on the lower side, it is easier to hold the first attachment member 110 of one end portion 100A of the sheet member 100 when temporarily fixing it. Note that "temporarily fixed" refers to a state in which the first attachment portion 110 is temporarily fixed to such an extent that it does not come off when the sheet member 100 is wrapped around the trunk main body 52. ​​In this embodiment, it refers to a state in which the attachment screw 60 is not tightened.

[0126] In addition, since the mounting surface 110A of the first mounting member 110 at one end 100A of the sheet member 100 and the contact surface 310A of the first base portion 300 are in stable contact with each other, the first mounting member 110 is easier to hold stable during temporary fixation compared to the case where the mounting surface 110A of the first mounting member 110 contacts a convex portion of the first base portion 300.

[0127] With the normal direction of the contact surface 310A of the first base portion 300 of the recess 54 of the trunk main body 52 facing vertically upward and the recess 54 of the trunk main body 52 facing upward, the attachment surface 110A of the first attachment member 110 of one end portion 100A of the sheet member 100 is held in contact with the contact surface 310A of the first base portion 300. Thus, compared to the case where the normal direction of the contact surface 310A of the first base portion 300 of the recess 54 of the trunk main body 52 is inclined to the vertical direction, the attachment surface 110A of the first attachment member 110 of one end portion 100A of the sheet member 100 and the contact surface 310A of the first base portion 300 are in contact and stably held, and workability is improved when temporarily fastening with the attachment screw 60 passed through the first through hole 115 formed in the protruding portion 112 of the first attachment member 110.

[0128] Here, as described above, it is sufficient that the normal direction of the contact surface 310A of the first base portion 300 is between the vertically upward direction and the horizontal direction to the right in the figure. In this embodiment, it is sufficient that the position of the gripper 36 is between the 0° scale 523 and the -90° scale 521. Even in this case, compared to a state in which the normal direction of the contact surface 310A is diagonally downward, it is easier to hold the first mounting member 110 of the sheet member 100 on the first base portion 300 when temporarily fixing it, and the workability is good when temporarily fixing the first mounting member 110 by inserting the mounting screw 60 into the first through hole 115 formed in the protruding portion 112 of the first mounting member 110.

[0129] Furthermore, it is preferable that the normal direction of the contact surface 310A of the first base portion 300 is between the vertically upward direction and 45° above the horizontal to the right. In this embodiment, it is preferable that the position of the gripper 36 is between the 0° scale 523 and the -45° scale 522. In this case, compared to the horizontal direction, the normal direction of the contact surface 310A is easier to hold the first mounting member 110 of the sheet member 100 on the first base portion 300 when temporarily fixing it, and the workability is good when temporarily fixing it with the mounting screw 60 passed through the first through hole 115 formed in the protruding portion 112 of the first mounting member 110.

[0130] Moreover, the other side of the sheet member 100 hangs down due to its own weight, and the protruding portion 114 of the first mounting member 110 abuts against the recessed portion 302 of the first base portion 300 and is held there.

[0131] Therefore, compared to a case where the first mounting member 110 is freely movable in the circumferential direction, it is easier to hold the first mounting member 110 during temporary fixation. Also, compared to a case where the first mounting member 110 is freely movable outward in the radial direction, it is easier to hold the first mounting member 110 during temporary fixation.

[0132] Moreover, compared to a case where the confirmation unit 520 is not provided, the sheet member 100 can be attached more easily while operating the operation button 510.

[0133] Furthermore, compared to a case where a separate installation member is prepared instead of the packaged packaging material 820, the number of parts required for transporting the sheet member 100 is reduced.

[0134] [Another image forming device] The image forming apparatus 10 according to the present embodiment is not limited to the inkjet type as described above, and may be, for example, an electrophotographic type as shown in Fig. 14. That is, instead of the adhesive layer forming device 26, the particle supplying device 18, and the ejection head 20, a toner image forming section 80 that forms a toner image of each color (an example of an image) may be provided.

[0135] Each color toner image forming unit 80 (80Y, 80M, 80C, 80K) has a cylindrical photoconductor 82 that rotates in one direction (the direction of arrow B), and around each photoconductor 82, a charger 84, an exposure device 86, and a developing device 88 are arranged in that order from the upstream side in the rotation direction of the photoconductor 82.

[0136] In the toner image forming section 80 for each color, the charger 84 charges the surface of the photoreceptor 82, and the exposure device 86 exposes the surface of the photoreceptor 82 charged by the charger 84 to light, thereby forming an electrostatic latent image on the surface of the photoreceptor 82. Then, the developing device 88 develops the electrostatic latent image formed on the surface of the photoreceptor 82 by the exposure device 86 to form a toner image.

[0137] Incidentally, primary transfer rolls 78 are provided on the inner peripheral surface side of the transfer belt 30, facing each of the photoconductors 82 with the transfer belt 30 in between. The toner images formed in the toner image forming units 80 for each color are sequentially primarily transferred and superimposed on the transfer belt 30 at a primary transfer position T1 where the primary transfer rolls 78 are provided, and the superimposed toner images are secondarily transferred onto the recording medium P at a secondary transfer position T2.

[0138] The manufacturing method of the transfer cylinder 50 (body member), the transfer cylinder 50 (body member), and the image forming apparatus 10 according to the present embodiment have been described above with reference to the drawings, but the manufacturing method of the transfer cylinder 50, the transfer cylinder 50, and the image forming apparatus 10 according to the present embodiment are not limited to those shown in the drawings, and can be appropriately modified in design without departing from the gist of the present invention. For example, the sheet member 100 is not limited to a two-layer structure, and may be a three-layer or more structure.

[0139] Furthermore, the cylinder main body 52 may be formed in a substantially cylindrical shape instead of a substantially cylindrical shape. Furthermore, the cylinder member is not limited to the transfer cylinder 50, and may be, for example, a fixing cylinder that applies pressure to fix a toner image, a blanket cylinder used in offset printing, or the like. The manufacturing method according to this embodiment can be similarly applied to such cylinder members.

[0140] (others)

[0141] The present invention is not limited to the above-described embodiment, and the design can be appropriately modified without departing from the spirit and scope of the present invention.

[0142] For example, in the sheet member 100, the outer layer 102 is adhered to the metal layer 150 by an adhesive, but is not limited to this. For example, the inner circumferential surface of the outer layer 102 that contacts the outer circumferential surface of the metal layer 150 may be heated and melted to adhere them. Also, a coating layer (not shown) may be further provided on the outer circumferential surface of the outer layer 102. Furthermore, the coating layer is not limited to a single layer, and may be made up of multiple layers.

[0143] Also, for example, in the above embodiment, the inner surface of the sheet member 100 is made of the metal layer 150, but this is not limited thereto. It may be made of a material other than metal. Also, the sheet member 100 may be made of a single layer. For example, it may be a resin layer made of a conductive resin material such as solid rubber, polyimide, polyamide-imide, polyurethane, polyethylene, polycarbonate, polyethylene terephthalate, and mixtures thereof.

[0144] For example, the installation target member 500 is the packaging material 820 either directly or after being processed into a sheet, but is not limited to this. Instead of the packaging material 820, the installation target member 500 may be prepared separately.

[0145] In the above embodiment, the installation member 500 is fixed to the upper end portion 602 of the frame 600 of the apparatus body 11 and the side portion 612 of the frame 610 with double-sided tape or the like, but is not limited to this. For example, only the corner portion 604 of the frame 600 and the corner portion 614 of the frame 610 may be covered with different installation members.

[0146] In short, the installed member 500 provided between the metal layer 150 constituting the inner surface of the sheet member 100 and the device body 11 may be one that causes less damage to the metal layer 150 or less snagging when the sheet member 100 is wound up and can be wound up smoothly, compared to a case in which the metal layer 150 of the sheet member 100 contacts only the device body 11. Also, it may be one that can improve the adhesion of the sheet member 100 to the trunk body 52. ​​Note that the material is preferably made of or covered with a material with a small friction coefficient, such as fluororesin.

[0147] In the above embodiment, the installed member 500 is installed before the first attachment member 110 of one end portion 100A of the sheet member 100 is temporarily fixed to the first base portion 300, but this is not limited to the above. The installed member 500 may be installed after the first attachment member 110 of one end portion 100A of the sheet member 100 is temporarily fixed to the first base portion 300. In short, the installed member 500 may be installed before the sheet member 100 is wrapped around the trunk main body 52.

[0148] Also, for example, in the above embodiment, the pair of protruding portions 112 of the first mounting member 110 protruding from the sheet member 100 on both sides in the axial direction are attached to the first base portion 300, but this is not limited thereto. For example, a configuration may be adopted in which only the protruding portion protruding in the circumferential direction from one end of the sheet member 100 is attached to the first base portion 300. Alternatively, the central portion 113 may protrude in the circumferential direction, and the protruding portion may be attached to the first base portion 300.

[0149] In the above embodiment, the central portion 113 of the first mounting member 110 is disposed within the range of the sheet member 100 when viewed in the thickness direction (diametrical direction) of the sheet member 100, but is not limited to this. For example, the central portion 113 of the first mounting member 110 may be configured to protrude from one end of the sheet member 100 in the circumferential direction.

[0150] In addition, in the above embodiment, the first attachment member 110 is joined to the metal layer 150 of the one end portion 100A of the sheet member 100, but this is not limited thereto. For example, the first attachment member 110 may be fixed to the one end portion 100A with a screw or the like.

[0151] Moreover, the trunk body 52 may be formed in a substantially columnar shape, not a substantially cylindrical shape. In short, the trunk body 52 may have a substantially circular cross section. The term "substantially circular shape" refers to a perfect circle or a circular shape close to a perfect circle. The term "substantially circular shape" also includes a perfect circle. In this embodiment, the shape is a shape in which a recess or the like is formed in a member having a circular cross section. In this embodiment, the trunk body 52 has a recess 54 as an example of a recess, but this is not limited to this. The rigid body may not have a recess such as the recess 54. In addition, the second fixed portion to which the other end of the sheet member 100 is fixed is located downstream of the first fixed portion to which one end is fixed.

[0152] Furthermore, the cylinder member is not limited to the configuration applied to the transfer cylinder 50, and may be applied to, for example, a fixing cylinder that pressurizes and fixes toner, a blanket cylinder used in offset printing, etc. Furthermore, in this embodiment, a toner image is given as an example of an image, and is a toner image formed by a dry electrophotographic method, but the present invention is not limited to this. For example, a toner image formed by a wet electrophotographic method may also be used. [Explanation of symbols]

[0153] 10 Image forming device 11. Device body 12 Image forming section 50 Transfer cylinder (an example of a cylinder component) 52 Body 54 Concave portion (an example of a recessed portion) 80 Toner image forming unit (an example of an image forming unit) 100 Sheet member 100A One end 100B Other end 102 Outer layer 110 First mounting member (an example of a mounting member) 110A Mounting surface 112 Overhang part 113 Central part 114 Protrusion 150 Metal layer (an example of the inner surface) 300 First base part (an example of the first fixed part) 302 Recess (an example of a positioning part) 310A contact surface 350 Second base part (an example of the second fixed part) 500 Operation button (an example of an operation part) 510 Verification Department 810 Sheet material packaging 820 Packaging materials P Recording medium

Claims

1. a temporary fixing step of temporarily fixing one end of the sheet member to a first fixed portion of a barrel body having a substantially circular cross section and provided in the apparatus body; a winding step of rotating the trunk body and winding the sheet member around the trunk body; a fixing step of fixing one end and the other end of the sheet member to the first fixed portion and the second fixed portion, respectively; an installation step of installing a member to be installed between the inner surface of the sheet member and the device body before the sheet member is wrapped around the body before the winding step; A method for attaching a sheet member having the above structure to a trunk body.

2. In the installation step, a packaging material that packs the sheet member is used as the installation target member. A method for attaching the sheet member according to claim 1 to a trunk body.

3. In the temporary fixing step, temporary fixing is performed in a state in which the first fixed portion is positioned on the upper side in the gravity direction. A method for attaching the sheet member according to claim 1 or 2 to a trunk body.

4. An attachment member is provided at one end of the sheet member, The first fixed portion is provided with a contact surface with which the mounting surface of the mounting member comes into contact. A method for attaching the sheet member according to any one of claims 1 to 3 to a trunk main body.

5. An attachment member is provided at one end of the sheet member, The first fixed portion is provided with a contact surface with which the mounting surface of the mounting member comes into contact, The temporary fixing step is performed in a state in which the normal direction of the contact surface is between a vertically upward direction and a horizontal direction. A method for attaching the sheet member according to claim 1 or 2 to a trunk body.

6. The temporary fixing step is performed in a state in which the normal direction of the contact surface is between a vertical direction and a 45° upward direction with respect to the horizontal direction. A method for attaching the sheet member according to claim 5 to a trunk body.

7. The first fixed portion is provided with a positioning portion that positions the mounting member by being abutted against the mounting member in a circumferential direction. A method for attaching the sheet member according to any one of claims 4 to 6 to a trunk main body.

8. The positioning portion, when the mounting member is abutted against the mounting member in the circumferential direction, abuts against the mounting member in the radial direction of the barrel body to limit the movement of the mounting member outward in the radial direction. A method for attaching the sheet member according to claim 7 to a trunk body.

9. The device body is provided with an operation unit that rotates the barrel body, A confirmation portion capable of confirming the position of the first fixed portion of the body is provided near the operation portion. A method for attaching the sheet member according to any one of claims 1 to 8 to a trunk main body.

10. a sheet member that is wrapped around a body of the device body and has one end and the other end removably attached to the body; A packaging material that packs the sheet member and serves as a mounting member that is mounted between the inner surface of the sheet member and the device body when the sheet member is wrapped around the body; A package of sheet members comprising:

Images