Image forming apparatus

Abstract

The present invention addresses the problem of shortening a wire harness that connects a solenoid actuator that moves a movable slide and a control board that controls the solenoid actuator. The image forming apparatus includes a main body housing (2), a transfer roller (53) that rotates about a rotation axis extending in a first direction, a movable slide (120), a solenoid actuator (150), and a control substrate (B1). A solenoid actuator (150) moves the movable slide (120) between a first position and a second position. The main body case (2) has: a first frame (F1) disposed on one side in the first direction with respect to the movable slide (120); and a second frame (F2) disposed on the other side in the first direction. The solenoid actuator (150) is supported by the first frame (F1).

Description

Technical Field

[0001] The present invention relates to an image forming device provided with a movable slide. Background Art

[0002] There is known an image forming apparatus that includes a movable slide that guides a sheet from a photosensitive drum toward a fixing device and a solenoid actuator that moves the movable slide (see Patent Document 1). In the image forming apparatus, the movable slide is moved up and down by the solenoid actuator, thereby suppressing wrinkles on the sheet when the sheet enters the fixing device.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2010-091631

[0006] If the harness connecting the control substrate for controlling the movement of the movable slide and the solenoid actuator for moving the movable slide is long, the noise received by the harness in the main body housing and the noise generated by the harness become larger. In addition, if the harness is long, the wiring cost becomes larger. Therefore, it is desirable to shorten the harness connecting the control substrate and the solenoid actuator.

[0007] In addition, when the movable slide is frequently moved, the temperature of the solenoid actuator may rise. Generally, when the temperature of the solenoid actuator rises, the performance may decline, for example, the attraction force may decline. Therefore, it is difficult to keep the movable slide working stably. Summary of the invention

[0008] An object of the present invention is to provide an image forming apparatus capable of shortening a wiring harness connecting a solenoid actuator for moving a movable slide and a control substrate for controlling the solenoid actuator.

[0009] Another object of the present invention is to provide an image forming apparatus capable of efficiently cooling a solenoid actuator so that a movable slide can continue to operate stably.

[0010] In order to solve the above-mentioned problems, an image forming apparatus according to the present invention includes a main body casing, a transfer roller, a fixing device, a movable slide, and a solenoid actuator.

[0011] The transfer roller rotates around a rotation axis extending in a first direction. The transfer roller transfers a toner image to a sheet. The fuser fixes the toner image transferred to the sheet to the sheet. The movable slide is located between the transfer roller and the fuser in the conveying direction of the sheet. The movable slide guides the sheet. The movable slide is movable between a first position and a second position located below the first position. The second position is a position where an end of the downstream side of the movable slide in the conveying direction of the sheet is located below the first position. The solenoid actuator moves the movable slide between the first position and the second position.

[0012] The main body housing has a first frame and a second frame. The first frame is arranged on one side of the movable slide in the first direction. The first frame supports the solenoid actuator. The second frame is arranged on the other side of the main body housing in the first direction relative to the movable slide.

[0013] Since the solenoid actuator is supported by the first frame disposed on one side of the movable slide in the first direction, the vertical movement range of the movable slide is not restricted by the solenoid actuator, and the movable slide can move vertically to a large extent.

[0014] In addition, the image forming apparatus may further include a control substrate that is disposed on the first frame and includes a control unit that controls at least the solenoid actuator.

[0015] In addition, the image forming device may further include a harness connecting the control substrate and the solenoid actuator. Furthermore, the control substrate may have a mounting surface on which a first connector for connecting the harness is mounted. Furthermore, the mounting surface may face in a first direction away from the movable slideway and be located at a position farther from the movable slideway than the solenoid actuator.

[0016] Since the mounting surface of the control substrate faces in a direction away from the movable slide, it is possible to suppress the noise generated in the solenoid actuator from reaching the mounting surface of the control substrate.

[0017] In addition, a wireless substrate may be provided, which has a substrate for wireless communication and is directly connected to the control substrate. Furthermore, the wireless substrate may be arranged on the opposite side of the solenoid actuator across the first frame in the first direction, and the solenoid actuator overlaps the wireless substrate across the first frame when viewed from the first direction.

[0018] By positioning the first frame between the solenoid actuator and the wireless board, it is possible to suppress the noise of the solenoid actuator from reaching the wireless board.

[0019] In addition, in the first direction, the control substrate may be located between the movable slide and the wireless substrate.

[0020] In addition, the upper end of the wireless substrate may be located above the upper end of the solenoid actuator.

[0021] Since the upper end of the wireless board is located higher than the upper end of the solenoid actuator, the wireless board is less likely to be affected by the noise of the solenoid actuator, and the communication stability of the wireless board is improved.

[0022] In addition, the image forming device may further include: a second substrate, which is arranged on the second frame; and a cable, which electrically connects the control substrate and the second substrate. In addition, the movable slide may be able to rotate between a first position and a second position around a rotation axis extending in the first direction. In addition, the cable may pass under the movable slide at a position between the rotation axis of the movable slide and the lowest point of the movable slide at the second position in the conveying direction of the sheet.

[0023] By passing the cable that electrically connects the control substrate and the second substrate under the movable slide, the cable is less likely to interfere with the movable slide.

[0024] Furthermore, the solenoid actuator may include a main body and a movable portion, and the movable portion may be movable between a third position and a fourth position moved from the third position in the first direction.

[0025] Furthermore, the image forming apparatus may further include a link mechanism that positions the movable slide at the first position when the movable portion is at the third position and positions the movable slide at the second position when the movable portion is at the fourth position.

[0026] In addition, the link mechanism may include a first link, a second link, and a third link. In this case, the first link may be connected to the movable portion at one end and may be movable in the first direction. In addition, the second link may be connected to the other end of the first link and may be rotated around the first axis by the movement of the first link. In addition, the third link may be connected to the second link and may be movable between a pressing position for pressing the movable slide down to the second position and a allowing position for allowing the movable slide to be located at the first position by the rotation of the second link.

[0027] Since the link mechanism includes the first link, the second link, and the third link, the link mechanism can make the movable slide move more than the solenoid actuator, thereby preventing the solenoid actuator from becoming larger in size.

[0028] In addition, the control unit may control the solenoid actuator to position the movable slideway at the first position before the leading end of the sheet reaches the fuser for each sheet on which an image is formed. Also, the control unit may control the solenoid actuator to move the movable slideway from the first position to the second position after the leading end of the sheet reaches the fuser for each sheet on which an image is formed. The leading end of the sheet is the downstream end in the conveying direction of the sheet.

[0029] The control unit moves the movable slide from the first position to the second position for each sheet on which an image is to be formed, thereby suppressing wrinkles from occurring on the sheet.

[0030] In addition, the image forming apparatus may further include an exhaust fan capable of exhausting air in the main body casing to the outside of the main body casing. Furthermore, the solenoid actuator may overlap the exhaust fan when viewed from the first direction.

[0031] Since the solenoid actuator overlaps with the exhaust fan when viewed from the first direction, the solenoid actuator can be efficiently cooled. Therefore, the movable slide can be stably operated continuously.

[0032] The image forming apparatus may further include a duct extending in the first direction between the exhaust fan and the solenoid actuator and forming a flow path for air to flow in the first direction. The solenoid actuator and the flow path of the duct may overlap when viewed from the first direction.

[0033] Since the solenoid actuator and the flow path of the duct overlap when viewed from the first direction, the solenoid actuator can be efficiently cooled.

[0034] In addition, the solenoid actuator may include a main body and a movable portion. Furthermore, the entire movable portion may overlap the exhaust fan when viewed from the first direction.

[0035] Since the entire movable portion overlaps with the exhaust fan when viewed from the first direction, the movable portion can be efficiently cooled.

[0036] When viewed from a second direction perpendicular to the first direction and the up-down direction, a portion of the movable portion may overlap with the flow path of the duct.

[0037] In addition, the exhaust fan may be supported by the second frame. Also, the duct may extend from the first frame to the second frame.

[0038] Since the duct extends from the first frame to the second frame, the duct can guide the heated air generated in the solenoid actuator from the solenoid actuator to the exhaust fan. Therefore, the solenoid actuator can be cooled efficiently.

[0039] Furthermore, the movable portion may be movable between a third position and a fourth position moved from the third position in the first direction.

[0040] The image forming apparatus may further include a link mechanism that positions the movable slideway at the first position when the movable portion is at the third position and positions the movable slideway at the second position when the movable portion is at the fourth position. A portion of the link mechanism may also be located inside the duct.

[0041] Since a part of the link mechanism is located inside the duct, it is possible to suppress an increase in size of the image forming apparatus.

[0042] In addition, the image forming apparatus may further include a holder that is disposed inside the duct and holds a portion of the link mechanism. Furthermore, the holder may be supported by the duct.

[0043] In addition, the holder may be engaged with the main body of the solenoid actuator.

[0044] In addition, the link mechanism may include a first link, a second link, and a third link. In this case, the first link may be connected to the movable portion at one end and may be movable in the first direction. In addition, the second link may be connected to the other end of the first link and may be rotated around the first axis by the movement of the first link. In addition, the third link may be connected to the second link and may be movable between a pressing position for pressing the movable slide down to the second position and a allowing position for allowing the movable slide to be located at the first position by the rotation of the second link.

[0045] Since the link mechanism includes the first link, the second link, and the third link, the link mechanism can make the movable slide move more than the solenoid actuator, thereby preventing the solenoid actuator from becoming larger in size.

[0046] In addition, the duct may overlap with the movable slide when viewed from the top and bottom.

[0047] Furthermore, the movable chute may have a conveying surface for conveying the sheet, and when the movable chute is moved from the first position to the second position, the link mechanism may press the movable chute from the conveying surface side.

[0048] Furthermore, the movable slide may be rotatable between a first position and a second position around a rotation axis extending in the first direction.

[0049] In addition, the image forming device may further include a holder disposed inside the duct and holding a portion of the link mechanism. Also, the holder may be engaged with the main body of the solenoid actuator and have a contact surface that contacts the first link when the movable portion moves from the third position to the fourth position.

[0050] When the movable portion moves from the third position to the fourth position, the first link contacts the contact surface of the holder, so that the position accuracy of the first link when the movable portion is located at the fourth position is improved.

[0051] Effects of the Invention

[0052] According to the present invention, it is possible to shorten the wiring harness connecting the solenoid actuator for moving the movable slide and the control substrate for controlling the solenoid actuator.

[0053] Furthermore, according to the present invention, the solenoid can be efficiently cooled and the movable slide can continue to operate stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a diagram showing a schematic configuration of an image forming apparatus according to an embodiment.

[0055] Figure 2 This is a diagram showing the vicinity of the movable slide located at the first position as viewed from the first direction.

[0056] Figure 3 This is a diagram showing the vicinity of the movable slide located at the second position as viewed from the first direction.

[0057] Figure 4 It is a three-dimensional diagram of a movable slide.

[0058] Figure 5 It is a perspective view showing the positions of the first frame, the second frame, the exhaust fan, and the duct.

[0059] Figure 6 It is a top view showing the positions of the first frame, the second frame, the exhaust fan, and the duct.

[0060] Figure 7 It is a three-dimensional diagram of the pipeline.

[0061] Figure 8 It is a stereogram of the first frame.

[0062] Fig. 9 It is the main view of the first frame.

[0063] Fig.10 It is a perspective view of the linkage mechanism and the solenoid actuator.

[0064] Fig.11 It is a diagram showing the link mechanism when the movable slide is located at the first position.

[0065] Fig.12 It is a diagram showing the link mechanism when the movable slide is located at the second position.

[0066] Fig.13 It is a three-dimensional diagram of the third link.

[0067] Explanation of symbols

[0068] 1 Image forming device

[0069] 2Main shell

[0070] 6Fuser

[0071] 40Exposure device

[0072] 51 Photosensitive drum

[0073] 53 transfer roller

[0074] 100 Guide Parts

[0075] 110 base

[0076] 120 movable slide

[0077] 130 Spring

[0078] 150 Solenoid Actuator

[0079] 151 Main body

[0080] 152 movable parts

[0081] 200 connecting rod mechanism

[0082] 210 first connecting rod

[0083] 220 Second connecting rod

[0084] 230 Third connecting rod

[0085] B1 control board

[0086] B2 Second substrate

[0087] B3 Wireless Board

[0088] DU pipeline

[0089] FA exhaust fan. DETAILED DESCRIPTION

[0090] Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

[0091] like Figure 1 As shown, the image forming apparatus 1 is a laser printer, and forms an image on a sheet S. The image forming apparatus 1 includes a main body casing 2 , a supply unit 3 , a processing unit 4 , a fixing device 6 , and a discharge unit 7 .

[0092] In the following description, the direction in which the rotation axis X1 of the photosensitive drum 51 described later extends is referred to as the "first direction". In addition, the conveying direction of the sheet S from the processing unit 4 toward the fixing device 6 is referred to as the "second direction". The first direction intersects with the second direction. In the present embodiment, the first direction is orthogonal to the second direction. In addition, the arrows indicating the directions in the drawings refer to "one side" in the directions.

[0093] The supply section 3 includes a supply tray 31 and a sheet supply device 32 . The supply tray 31 is a tray for storing sheets S. The sheet supply device 32 conveys the sheets S in the supply tray 31 toward the processing section 4 .

[0094] The process section 4 forms a toner image on the fed sheet S. The process section 4 includes an exposure device 40 and a process cartridge 50 .

[0095] The exposure device 40 is disposed in the upper part of the main body housing 2, and includes a laser light emitting unit (not shown), a polygon mirror 41 driven to rotate, a lens 42, and a reflector 44. The laser light (see the dot-dash line) based on the image data emitted from the laser light emitting unit is reflected or passed through the polygon mirror 41, the lens 42, and the reflector 44 in this order, and then scanned at high speed on the surface of the photosensitive drum 51.

[0096] The process cartridge 50 is disposed below the exposure device 40. The process cartridge 50 is configured to be replaceable by being attached to and detached from the main body casing 2 through an opening formed by opening the front cover 23 provided on the main body casing 2. The process cartridge 50 includes a photosensitive drum 51, a charger 52, a transfer roller 53, a developing roller 54, a supply roller 55, a toner storage portion 56, and a toner storage 57.

[0097] The photosensitive drum 51 rotates around a rotation axis X1 extending in the first direction.

[0098] The transfer roller 53 rotates around a rotation axis X4 extending in the first direction. The transfer roller 53 forms a transfer nip NP1 with the photosensitive drum 51. The transfer roller 53 transfers the toner image on the photosensitive drum 51 to the sheet S. The toner memory 57 is a memory in which information of the process cartridge 50 is stored.

[0099] The fixing device 6 thermally fixes the toner image transferred onto the sheet S. The fixing device 6 is provided on the downstream side of the conveying direction of the processing section 4. The fixing device 6 includes a heating rotating body 61, a pressing rotating body 62, and a fixing frame 63.

[0100] The heating rotator 61 is a member for heating the sheet S. The heating rotator 61 is an endless belt. The heating rotator 61 accommodates a heater inside and heats the sheet S by rotating with the sheet S sandwiched between the heating rotator 61 and the pressing rotator 62 .

[0101] The pressure rotating body 62 is a member that forms the fixing nip NP2 with the heating rotating body 61. The pressure rotating body 62 is a roller whose surface is made of a non-conductive elastic body. The heating rotating body 61 and the pressure rotating body 62 are pressed against each other by a pressing member (not shown).

[0102] The fixing frame 63 is a frame that covers the heating rotating body 61 and the pressing rotating body 62. The fixing frame 63 rotatably supports the heating rotating body 61 and the pressing rotating body 62.

[0103] In the processing section 4, the surface of the photosensitive drum 51 is uniformly charged to positive polarity by the charger 52, and then exposed by high-speed scanning of laser light from the exposure device 40, thereby forming an electrostatic latent image on the photosensitive drum 51. In addition, the toner in the toner storage section 56 is supplied to the developing roller 54 via the supply roller 55 and is carried on the developing roller 54.

[0104] Then, the toner carried on the developing roller 54 is supplied to the electrostatic latent image on the photosensitive drum 51, thereby visualizing the electrostatic latent image and forming a toner image on the photosensitive drum 51. After that, the sheet S supplied from the supply unit 3 is conveyed between the photosensitive drum 51 and the transfer roller 53 (transfer nip NP1), and by applying a negative transfer bias to the transfer roller 53, the toner image on the photosensitive drum 51 is transferred to the sheet S. Next, the sheet S is conveyed between the heating rotating body 61 and the pressure rotating body 62 (fixing nip NP2), and the toner image transferred to the sheet S is thermally fixed.

[0105] The discharge unit 7 conveys the sheet S on which the toner image is thermally fixed toward the outside of the main body casing 2 . The discharge unit 7 includes a discharge roller 73 . The discharge roller 73 discharges the sheet S toward the discharge tray 22 .

[0106] The image forming apparatus 1 includes a re-conveying mechanism 9. The re-conveying mechanism 9 is a mechanism for re-conveying the sheet S to the processing unit 4 in a state where the front and back sides of the sheet S are reversed in order to form an image on the second side of the back side of the sheet S after an image is formed on the first side of the sheet S. Figure 1 In FIG. 1 , the sheet S to be re-conveyed is indicated by a two-dot chain line.

[0107] The re-conveying mechanism 9 includes a flapper 91 and a plurality of re-conveying rollers 92, 93, and 94. The flapper 91 can rotate between an initial position indicated by a solid line and a re-conveying position indicated by a two-dot chain line. When the flapper 91 is at the initial position, the sheet S discharged from the fixing device 6 is guided toward the discharge tray 22. When the flapper 91 is at the re-conveying position, the sheet S discharged from the fixing device 6 is guided toward the re-conveying path by the discharge roller 73 rotating in the reverse direction at a predetermined timing.

[0108] Furthermore, the image forming apparatus 1 includes a guide member 100. The guide member 100 is located below the process cartridge 50 and guides the sheet S from the transfer nip NP1 toward the fixing nip NP2. In addition, the guide member 100 guides the sheet S in the re-transport path toward the transfer nip NP1. The re-transport path is formed on the lower side of the guide member 100. Figure 2 As shown, the guide member 100 includes a base portion 110, a movable slide 120, and a spring 130. The movable slide 120 can be moved to Figure 2 The first position shown and Figure 3 The second position is shown.

[0109] The base portion 110 has a first recess 111, a second recess 112, and a lower surface 113. The first recess 111 is located at the end portion on the other side of the second direction in the upper surface of the base portion 110. The first recess 111 is a portion into which a portion of the transfer roller 53 enters. The second recess 112 is located at the end portion on the one side of the second direction in the upper surface of the base portion 110. The second recess 112 is a portion that supports the movable slide 120 so as to be rotatable. The lower surface 113 is a surface on the lower side of the base portion 110, and is a guide surface for guiding the sheet S in the re-conveying path.

[0110] The movable slide 120 is located between the photosensitive drum 51 and the fixing device 6 in the conveying direction of the sheet S. The movable slide 120 guides the sheet S. The movable slide 120 can be Figure 2 The first position shown is Figure 3 The second position is located below the first position. Specifically, the second position is a position where the downstream end of the movable slide 120 in the conveying direction of the sheet S is located below the first position. The movable slide 120 can rotate between the first position and the second position around the rotation axis X2 extending in the first direction.

[0111] like Figure 4 As shown, the movable slide 120 includes a base portion 121 , a plurality of guide ribs 122 , a cylindrical portion 123 , a pressed portion 124 , and a stopper 125 .

[0112] The base portion 121 has a plate shape bent in a downwardly concave manner. The base portion 121 extends in the first direction and the second direction.

[0113] The plurality of guide ribs 122 are ribs protruding upward from the base portion 121 and extending in the second direction along the curve of the base portion 121. The plurality of guide ribs 122 constitute a conveying surface for conveying the sheet S of the movable chute 120.

[0114] The cylindrical portion 123 is disposed at the other end portion in the second direction of the base portion 121. One cylindrical portion 123 is disposed at each of the two ends in the first direction of the movable slideway 120. The cylindrical portion 123 is a portion that axially supports the movable slideway 120.

[0115] The pressed portion 124 is disposed at one end of the movable slide 120 in the first direction and one end of the movable slide 120 in the second direction. The pressed portion 124 protrudes upward from the base portion 121. The pressed portion 124 is a portion pressed by a link mechanism 200 described later when the movable slide 120 moves from the first position to the second position.

[0116] The stopper 125 contacts the duct DU described later to restrict the movement of the movable slide 120. The stopper 125 is located between the cylindrical portion 123 and the pressed portion 124 in the second direction. The stopper 125 is disposed at both ends of the movable slide 120 in the first direction.

[0117] The spring 130 is a torsion spring. The spring 130 is respectively arranged at both ends of the movable slide 120 in the first direction. The spring 130 has a coil portion 131, a first arm 132, and a second arm 133. The coil portion 131 is engaged with the outer side of the cylindrical portion 123. The first arm 132 extends from the coil portion 131 and is hooked on the base portion 110. The second arm 133 extends from the coil portion 131 and is hooked on the movable slide 120. The spring 130 always applies force to the movable slide 120 upward. As a result, the movable slide 120 is pressed upward by the spring 130 when it is not pressed by the link mechanism 200, and the stopper 125 contacts the pipe DU, so that the movable slide 120 is located in the first position.

[0118] like Figure 5 As shown, the main body casing 2 has a first frame F1, a second frame F2, a third frame F3 and a fourth frame F4.

[0119] The first frame F1 is a wall located on one side in the first direction of the main body housing 2. The first frame F1 is disposed on one side in the first direction with respect to the movable slide 120.

[0120] The second frame F2 is a wall located on the other side in the first direction of the main body housing 2. The second frame F2 is disposed on the other side in the first direction with respect to the movable slide 120.

[0121] The third frame F3 has a flat plate shape and extends in the first direction. The third frame F3 connects the first frame F1 and the second frame F2. The exposure device 40 is fixed to the upper surface of the third frame F3. The third frame F3 has a flange F31 extending in a manner of standing up from an end portion on one side in the second direction.

[0122] The fourth frame F4 has a flat plate shape and extends in the first direction. The fourth frame F4 connects the lower end of the first frame F1 and the lower end of the second frame F2.

[0123] like Figure 5 , Figure 6As shown, the image forming apparatus 1 further includes an exhaust fan FA, a duct DU, a control board B1, a second board B2, a cable CB, a wireless board B3, a first harness H1, a second harness H2, a third harness H3, a thermistor TH, an electric contact CT, a solenoid actuator 150 and a link mechanism 200.

[0124] The exhaust fan FA is disposed on the second frame F2. The exhaust fan FA is disposed substantially at the center of the second frame F2 in the second direction. The exhaust fan FA can exhaust the air in the main body casing 2 to the outside of the main body casing 2.

[0125] The duct DU is a component that guides the air in the main body case 2 to the exhaust fan FA in order to discharge the air in the main body case 2 to the outside of the main body case 2. Specifically, the air in the main body case 2 is guided from one side to the other side in the first direction. The duct DU extends from the first frame F1 to the second frame F2 along the first direction. When viewed from the top and bottom directions, the duct DU overlaps with the movable slide 120 (see also FIG. Figure 1 ). A solenoid actuator 150 is disposed at one end of the duct DU in the first direction. An exhaust fan FA is disposed at the other end of the duct DU in the first direction. That is, the duct DU is located between the exhaust fan FA and the solenoid actuator 150. The duct DU is located on one side of the exposure device 40 in the second direction. The duct DU is fixed to the flange F31 of the third frame F3 by means of a screw N (see also FIG. Figure 2 ).

[0126] like Figure 7 As shown, the duct DU has a first wall DU1, a second wall DU2, a third wall DU3, a plurality of connecting ribs DU4, and an opening DU5. The first wall DU1, the second wall DU2, the third wall DU3, and the plurality of connecting ribs DU4 form a flow path for air to flow in a first direction. In other words, the flow path of the duct DU is a space surrounded by the first wall DU1, the second wall DU2, the third wall DU3, and the plurality of connecting ribs DU4.

[0127] The first wall DU1 is a wall orthogonal to the second direction and extends in the first direction. The first wall DU1 has a first protrusion DU11, a second protrusion DU12, and a fixing hole DU13. The first protrusion DU11 and the second protrusion DU12 are used to fix the link mechanism 200 described later. The fixing hole DU13 is a hole through which a screw N that fixes the duct DU to the third frame F3 passes (see Figure 2 ).

[0128] The second wall DU2 is a wall perpendicular to the second direction and extends along the first direction. The second wall DU2 is opposite to the first wall DU1.

[0129] The third wall DU3 connects the end of the first wall DU1 on one side in the first direction and the end of the second wall DU2 on one side in the first direction. The third wall DU3 is a wall perpendicular to the first direction. The third wall DU3 has a convex portion DU31 protruding to the other side in the first direction. A groove DU32 extending in the up-down direction is formed on the peripheral surface of the convex portion DU31 (see Fig.13 ).

[0130] The plurality of connecting ribs DU4 are ribs connecting the lower end of the first wall DU1 and the lower end of the second wall DU2. Each connecting rib DU4 is a wall perpendicular to the first direction and extends in the second direction. A plurality of holes DU8 penetrating vertically are formed between the connecting ribs DU4. The air heated in the main body case 2 enters the flow path of the duct DU from the holes DU8 between the connecting ribs DU4.

[0131] The opening DU5 is an opening formed on the other side of the first direction. The opening DU5 is located at a position opposite to the exhaust fan FA. When the exhaust fan FA is operated, the air entering the duct DU is discharged from the opening DU5.

[0132] like Figure 8 As shown, the control substrate B1 is a substrate having a control unit CU. The control substrate B1 is arranged on the first frame F1. The control substrate B1 is located at an end portion of one side in the second direction of the first frame F1. The control substrate B1 has a mounting surface B11 on which electrical components are mounted.

[0133] The mounting surface B11 faces one side of the first direction, which is the outer side of the main body housing 2. That is, the mounting surface B11 faces a direction away from the movable slideway 120 in the first direction (refer to Figure 6 ). In the first direction, the mounting surface B11 is located farther from the movable slide 120 than the solenoid actuator 150. On the mounting surface B11, in addition to the control unit CU, the first connector CN1, the second connector CN2, and the wireless board B3 are mounted.

[0134] The first connector CN1 connects the first harness H1 through which current flows to the solenoid actuator 150. The first harness H1 is an example of a harness, and connects the control board B1 to the solenoid actuator 150. The first harness H1 is extended upward from the first connector CN1 and then routed to the other side of the wireless board B3 in the first direction (see FIG. Fig. 9 ). An insertion port of the first harness H1 in the first connector CN1 faces one side in the first direction, which is the outside of the main body housing 2 .

[0135] The second connector CN2 connects the second harness H2 and the third harness H3. The second harness H2 connects the control board B1 and the thermistor TH. The third harness H3 connects the control board B1 and the electrical contact CT. The second harness H2 and the third harness H3 are wired on the other side of the first direction of the wireless board B3 in such a manner that they extend upward from the second connector CN2 and then bypass the wireless board B3 (see Fig. 9 The insertion ports of the second harness H2 and the third harness H3 in the second connector CN2 face one side in the first direction, which is the outside of the main body housing 2 .

[0136] The control unit CU includes a CPU, a RAM, a ROM, an input-output circuit, etc., and performs control by performing various calculations based on programs and data stored in the ROM, etc. In the present embodiment, the control unit CU controls the solenoid actuator 150. Specifically, each time the control unit CU forms an image on a sheet S, the movable slide 120 is located in the first position before the front end of the sheet S (in other words, the downstream end in the conveying direction of the sheet S) reaches the fuser 6. Furthermore, each time the control unit CU forms an image on a sheet S, the movable slide 120 is moved from the first position to the second position after the front end of the sheet S (in other words, the downstream end in the conveying direction of the sheet S) reaches the fuser 6. Figure 2 The first position shown moves to Figure 3 The second position is shown.

[0137] The wireless board B3 is a board for wireless communication. The wireless board B3 is directly connected to the control board B1. That is, the wireless board B3 is directly connected to the control board B1 without using a harness or the like.

[0138] like Figure 5 , Figure 6 As shown, the second substrate B2 is arranged on the second frame F2. The second substrate B2 has an AC-DC conversion circuit (not shown). The AC-DC conversion circuit is a circuit that converts the AC voltage input from the commercial power supply into a specified DC voltage. As an example, the AC-DC conversion circuit converts AC100V into DC24V. The control substrate B1 and the second substrate B2 are connected by a cable CB. Via the cable CB, the converted DC voltage is sent from the second substrate B2 to the control substrate B1.

[0139] The cable CB is a cable that electrically connects the control substrate B1 and the second substrate B2. Figure 4 As shown, the cable CB passes under the movable slide 120. Figure 3 As shown, the cable CB passes through a position between the rotation axis X2 of the movable slide 120 and the lowermost point BP of the movable slide 120 located at the second position in the conveying direction of the sheet S.

[0140] like Figure 6As shown, in the first direction, the control substrate B1 is located between the movable slide 120 and the wireless substrate B3. Fig. 9 As shown, the wireless substrate B3 is arranged on the opposite side of the solenoid actuator 150 across the first frame F1. When viewed from the first direction, the solenoid actuator 150 at least partially overlaps the wireless substrate B3 across the first frame F1. In addition, the upper end of the wireless substrate B3 is located above the upper end of the solenoid actuator 150. In the up-down direction, the upper end of the wireless substrate B3 is located between the upper end of the control substrate B1 and the upper end of the solenoid actuator 150.

[0141] like Figure 8 As shown in FIG. 1 , the thermistor TH is disposed on the outer surface of the first frame F1 . The thermistor TH is disposed at the other end of the first frame F1 in the second direction. The thermistor TH detects the temperature outside the device.

[0142] The electric contact CT is arranged on the upper part of the first frame F1. The electric contact CT is arranged at the end of the other side in the second direction of the first frame F1. The electric contact CT is in electrical contact with the toner memory 57. The control unit CU reads information from the toner memory 57 via the electric contact CT.

[0143] like Figure 6 As shown, the solenoid actuator 150 is disposed on the first frame F1 and supported by the first frame F1. The solenoid actuator 150 is located closer to the first frame F1 than the second frame F2 in the first direction. Figure 2 As shown in FIG. 1 , when viewed from the first direction, the solenoid actuator 150 overlaps with the flow path of the duct DU. In addition, when viewed from the first direction, the solenoid actuator 150 also overlaps with the exhaust fan FA. Figure 6 As shown in FIG. 1 , the solenoid actuator 150 has a main body 151 and a movable part 152. The solenoid actuator 150 causes the movable slide 120 to move in a Figure 2 The first position shown is Figure 3 moves between the second positions shown.

[0144] like Fig.10As shown, the main body 151 has a rectangular parallelepiped shape. The movable part 152 is a pin movable relative to the main body 151 and can slide and move along the first direction. The movable part 152 can move between a third position and a fourth position. When the ON signal is not sent from the control unit CU, the movable part 152 is located at the third position. When the ON signal is sent from the control unit CU, the movable part 152 is pulled and moved from the third position to the fourth position on the other side of the first direction. When the ON signal is no longer sent from the control unit CU, the movable part 152 is not pulled to the fourth position, and therefore returns to the third position. When the movable part 152 is located at the third position, the movable slide 120 is located at the first position. In addition, when the solenoid actuator 150 is located at the fourth position, the movable slide 120 is located at the second position.

[0145] like Figure 2 As shown in FIG. 1 , the entire movable portion 152 overlaps with the exhaust fan FA when viewed from the first direction. In other words, the entire projection of the movable portion 152 in the first direction overlaps with the arrangement region of the exhaust fan FA.

[0146] In addition, if Fig.11 , Fig.12 As shown, the tip of the movable part 152 is located in the duct DU in both the third position and the fourth position. That is, a part of the movable part 152 overlaps with the flow path of the duct DU when viewed from the second direction.

[0147] like Fig.10 As shown, the link mechanism 200 is a mechanism that causes the movable slide 120 to be located at the first position when the movable portion 152 is located at the third position, and causes the movable slide 120 to be located at the second position when the solenoid actuator 150 is located at the fourth position. A portion of the link mechanism 200 is located inside the pipe DU (see Figure 5 The link mechanism 200 includes a first link 210 , a second link 220 , a third link 230 , a retainer 240 , and a coil spring 250 .

[0148] The holder 240 holds a part of the link mechanism 200. The holder 240 is supported by the duct DU while holding the link mechanism 200. Specifically, the holder 240 is engaged with the first protrusion DU11 and the second protrusion DU12 of the duct DU and fixed (see Figure 7 The retainer 240 includes a base portion 241 , an extension portion 242 , a first hook 243 , a boss 244 , and a contact portion 245 .

[0149] The base portion 241 extends in the first direction. The extension portion 242 extends upward and in the first direction from an end portion of the base portion 241 on one side in the first direction. The extension portion 242 covers a portion of the upper side of the main body portion 151 of the solenoid actuator 150. Fig.11 As shown, the extension portion 242 has an engagement claw 242A protruding downward from the extension portion 242. The engagement claw 242A engages with the upper surface of the main body 151 of the solenoid actuator 150. Thus, the holder 240 is positioned relative to the solenoid actuator 150 in the first direction.

[0150] Return to Fig.10 The first hook 243 is located at the other end of the base portion 241 in the first direction. The first hook 243 is engaged with one end of the coil spring 250 .

[0151] The boss 244 is disposed at the other end of the base portion 241 in the first direction. The boss 244 is a cylindrical protrusion that protrudes from the base portion 241 toward one side in the second direction. The boss 244 supports the second link 220 in a rotatable manner.

[0152] The abutment portion 245 is disposed between the extension portion 242 and the boss 244 in the first direction. The abutment portion 245 is a protrusion protruding from the base portion 241 to one side in the second direction. The abutment portion 245 has a first abutment surface 241A and a second abutment surface 241B. Sponges are attached to the surfaces of the first abutment surface 241A and the second abutment surface 241B, respectively. Each sponge is flattened to a predetermined thickness when pressed by the first connecting rod 210 or the second connecting rod 220.

[0153] The first contact surface 241A faces the other side in the first direction. The first contact surface 241A is an example of a contact surface that contacts the first link 210 when the movable portion 152 moves from the third position to the fourth position.

[0154] The second contact surface 241B faces downward. The second contact surface 241B is a surface that contacts the second link 220 when the movable portion 152 moves from the fourth position to the third position.

[0155] The first link 210 is connected to the solenoid actuator 150 and slides in the first direction together with the solenoid actuator 150 when the solenoid actuator 150 moves in the first direction. The first link 210 extends in the first direction and has a base 211 , a first hole 213 , and a first protrusion 214 .

[0156] The base portion 211 has a square rod shape extending in the first direction. The end of one side of the base portion 211 in the first direction is connected to the top end of the movable portion 152 of the solenoid actuator 150. Thus, when the solenoid actuator 150 moves in the first direction, the first link 210 also moves in the first direction with the movement.

[0157] The first hole 213 is disposed at the other end portion in the first direction of the base portion 211. The first hole 213 is a rectangular hole that penetrates in the up-down direction.

[0158] The first protrusion 214 extends downward from an end portion of one side in the first direction of the base portion 211. The first protrusion 214 is located on one side in the first direction relative to the center in the first direction of the base portion 211. The first protrusion 214 is a portion that abuts against the first abutting surface 241A of the holder 240 when the movable portion 152 moves from the third position to the fourth position.

[0159] The second link 220 is connected to the first link 210 and rotates around the first axis X3 as the rotation center when the first link 210 moves in the first direction. The second link 220 is located below the first link 210. The second link 220 has a base portion 221, a cylindrical portion 222, a second protrusion 223, a third protrusion 224, a second hook 225, and a third abutting surface 226.

[0160] The base portion 221 has a square rod shape extending in the first direction. The cylindrical portion 222 is arranged at the end of the other side of the base portion 221 in the first direction. The cylindrical portion 222 is formed in a cylindrical shape. The boss 244 of the retainer 240 enters the inner side of the cylindrical portion 222. When the boss 244 enters the cylindrical portion 222, the second connecting rod 220 can rotate around the first axis X3.

[0161] The second protrusion 223 protrudes upward from the outer circumference of the cylindrical portion 222. The second protrusion 223 enters the first hole 213 of the first connecting rod 210. As a result, the second connecting rod 220 is connected to the other end of the first connecting rod 210, and can rotate around the first axis X3 through the movement of the first connecting rod 210. Specifically, when the first connecting rod 210 moves to one side of the first direction, the first connecting rod 210 presses the second protrusion 223 to one side of the first direction, so that the second connecting rod 220 moves along the first direction. Fig.10 Rotate in clockwise direction.

[0162] The third protrusion 224 protrudes from an end portion of the base portion 221 on one side in the first direction toward one side in the first direction. The third protrusion 224 is connected to the third link 230 .

[0163] The second hook 225 protrudes upward from the outer peripheral surface of the cylindrical portion 222. The second hook 225 is located on the other side of the second protrusion 223 in the first direction. The second hook 225 is engaged with the other end of the coil spring 250.

[0164] The third abutment surface 226 is a surface located on the upper side of the end portion of the base portion 221 on one side in the first direction. Fig.10 When the second link 220 rotates counterclockwise and rises, the third contact surface 226 contacts the second contact surface 241B. Since the third contact surface 226 contacts the second contact surface 241B, the second link 220 does not rotate further.

[0165] The third link 230 is a component connected to the second link 220 and slides up and down according to the up and down movement of the third protrusion 224 of the second link 220 when the second link 220 rotates. Specifically, the third link 230 is connected to the second link 220. The third link 230 can move between the pressing position and the allowing position by the rotation of the second link 220. The pressing position is a position where the third link 230 presses the movable slide 120 down to the second position. The allowing position is a position where the third link 230 does not press the movable slide 120, and is a position where the movable slide 120 is allowed to be located at the first position. The third link 230 extends in the up and down direction and is located below the second link 220. The third link 230 has a base portion 231, a third hole 232 and a slide pressing portion 233.

[0166] The base portion 231 has a square rod shape extending in the up-down direction. Fig.13 As shown, the base portion 231 has a base hole 231H and a guide rail 231R. The base hole 231H is a rectangular hole formed on the inner side of the base portion 231. The base hole 231H is a hole extending in the up-down direction and penetrating in the first direction. The guide rails 231R extend in the up-down direction and are respectively formed on the inner walls on both sides of the base hole 231H. The guide rails 231R engage with the grooves DU32 formed on the convex portion DU31 of the pipe DU. By engaging the guide rails 231R with the grooves DU32, the third link 230 can slide and move in the up-down direction.

[0167] The third hole 232 is a rectangular hole located at the upper end of the third link 230. The third protrusion 224 of the second link 220 enters the third hole 232. Therefore, when the second link 220 rotates, the third link 230 slides and moves up and down.

[0168] The slideway pressing portion 233 is a portion that presses the movable slideway 120 downward. The slideway pressing portion 233 is located at the lower end of the third link 230. When the third link 230 moves downward, the slideway pressing portion 233 contacts the pressed portion 124 of the movable slideway 120 and presses the movable slideway 120 downward. In this way, when the movable slideway 120 is moved from the first position to the second position, the third link 230 presses the movable slideway 120 from the conveying surface side.

[0169] The coil spring 250 is a tension spring, and always pulls the second link 220 toward the other side of the first direction.

[0170] like Fig.11 As shown in FIG. 1 , the movable part 152 is located at the third position when the ON signal is not sent from the control unit CU. When the ON signal is sent from the control unit CU, the movable part 152 is pulled and moved from the third position to the fourth position. Fig.12 As shown, when the movable part 152 moves from the third position to the fourth position, the first link 210 slides together with the movable part 152 toward one side of the first direction. When the first link 210 slides toward one side of the first direction, the second protrusion 223 of the second link 220 moves toward one side of the first direction through the first link 210. When the second protrusion 223 moves toward one side of the first direction, the second link 220 moves along Fig.12 When the second link 220 rotates in the clockwise direction, the third protrusion 224 presses the third link 230 downward. When the third link 230 is pressed downward, the third link 230 moves to the pressing position, so that the slideway pressing portion 233 presses the pressed portion 124 of the movable slideway 120 downward. As a result, the movable slideway 120 moves from the first position to the second position.

[0171] On the other hand, when the ON signal is no longer sent from the control unit CU, the movable part 152 is not pulled to the fourth position, so the first link 210 does not press the second link 220. Therefore, the second link 220 is pulled from the fourth position by the force of the coil spring 250. Fig.12 When the second connecting rod 220 rotates in the counterclockwise direction, as shown in FIG. Fig.11As shown, the third link 230 is pulled upward by the third protrusion 224 of the second link 220. When the third hole 232 is pulled upward, the third link 230 moves from the pressing position to the allowing position, so that the slide pressing portion 233 does not press the pressed portion 124 of the movable slide 120. When the third link 230 moves to the allowing position, the movable slide 120 moves from the second position to the first position by the force of the spring 130. In addition, when the second link 220 rotates in the counterclockwise direction, the first link 210 is pulled to the other side of the first direction by the second protrusion 223 of the second link 220. When the first link 210 is pulled to the other side of the first direction, the movable portion 152 is pulled to the other side of the first direction together with the first link 210 and returns to the third position.

[0172] According to the image forming apparatus 1 of the present embodiment as described above, the following effects can be obtained.

[0173] The image forming apparatus 1 is provided with a solenoid actuator 150 for moving the movable slide 120 up and down. In the present embodiment, the control unit CU places the movable slide 120 at the first position and the second position each time an image is formed on a sheet S. At this time, the control unit CU places the movable slide 120 at the first position before the front end of the sheet S reaches the fixing device 6, and places the movable slide 120 at the second position after the front end of the sheet S reaches the fixing device 6. Figure 2 The first position shown moves to Figure 3 The second position is shown.

[0174] The movable slide 120 is located at the first position before the leading end of the sheet S reaches the fixing device 6 , so that the sheet S can enter the fixing nip NP2 at an ideal angle relative to the fixing nip NP2 . Therefore, the sheet S is less likely to wrinkle when entering the fixing nip NP2 .

[0175] In addition, when the sheet S is clamped by the transfer nip NP1 and the fixing nip NP2, the movable slide 120 is located at the second position. Thus, even when the sheet S is loosened between the transfer nip NP1 and the fixing nip NP2 because the conveying speed of the sheet S in the transfer nip NP1 is faster than the conveying speed of the sheet S in the fixing nip NP2, the sheet S can be conveyed in a state where the looseness of the sheet S is absorbed. Specifically, by moving the movable slide 120 from the first position to the second position, the movable slide 120 can support the sheet S from below while expanding the space between the transfer nip NP1 and the fixing nip NP2 downward and convey it. Therefore, even when the sheet S is loosened downward, it is possible to suppress the posture change during conveyance or the collision with other components in the main body housing 2. As a result, it is possible to suppress the toner image before fixing from being disturbed or the sheet S from being blocked.

[0176] Here, if the movable slide 120 is frequently moved, the solenoid actuator 150 may generate heat. When the solenoid actuator 150 generates heat, the performance may be reduced, such as a decrease in attraction force per the same electric power, compared to when the solenoid actuator 150 is not generated heat. Therefore, the solenoid actuator 150 needs to be efficiently cooled. However, in this embodiment, the solenoid actuator 150 overlaps with the exhaust fan FA when viewed from the first direction. Therefore, the solenoid actuator 150 can be arranged in the middle of the exhaust flow path reaching the exhaust fan FA, so that Fig.11 The air around the solenoid actuator 150 is efficiently flowed as shown by the arrow in the figure. Therefore, the solenoid actuator 150 can be efficiently cooled compared to the case where the solenoid actuator 150 does not overlap with the exhaust fan FA when viewed from the first direction. As a result, the movable slide 120 can be frequently operated continuously.

[0177] Furthermore, since the solenoid actuator 150 is supported by the first frame F1 disposed on one side of the movable slide 120 in the first direction, the vertical movement range of the movable slide 120 is not restricted by the solenoid actuator 150 , and the movable slide 120 can move vertically to a large extent.

[0178] In addition, when viewed from the first direction, the solenoid actuator 150 overlaps with the flow path of the duct DU. Therefore, the air heated by the solenoid actuator 150 is guided to the exhaust fan FA by the duct DU over the shortest distance, so that the solenoid actuator 150 can be efficiently cooled.

[0179] Furthermore, since the entire movable portion 152 of the solenoid actuator 150 overlaps with the exhaust fan FA when viewed from the first direction, the movable portion 152 can be efficiently cooled.

[0180] In addition, since the duct DU extends from the first frame F1 to the second frame F2, the duct DU can guide the heated air generated by the solenoid actuator 150 to the exhaust fan FA. Therefore, the solenoid actuator 150 can be cooled efficiently.

[0181] In addition, a part of the link mechanism 200 is located inside the duct DU. Therefore, it is not necessary to separately ensure a space for arranging the link mechanism 200, and it is possible to suppress an increase in the size of the image forming apparatus 1.

[0182] In addition, the link mechanism 200 includes a first link 210, a second link 220, and a third link 230. Therefore, the link mechanism 200 can make the movement amount of the movable slide 120 larger than the movement amount of the solenoid actuator 150. Therefore, it is possible to suppress the size increase of the solenoid actuator 150. By suppressing the size increase of the solenoid actuator 150, power consumption is reduced and heat generation can also be suppressed.

[0183] In addition, when the movable part 152 moves from the third position to the fourth position, the first link 210 contacts the first contact surface 241A of the holder 240. Therefore, when the movable part 152 is located at the fourth position, the first link 210 is positioned by the first contact surface 241A. As a result, when the movable part 152 is located at the fourth position, the position accuracy of the first link 210 can be maintained at a high level.

[0184] In addition, sponges are attached to the surfaces of the first abutting surface 241A and the second abutting surface 241B, respectively. Therefore, it is possible to suppress the generation of abnormal noise when the first abutting surface 241A abuts against the first connecting rod 210 and when the second abutting surface 241B abuts against the second connecting rod 220. Each sponge is flattened to a predetermined thickness when pressed by the first connecting rod 210 or the second connecting rod 220, thereby suppressing the position deviation of the movable slideway located at the second position.

[0185] In addition, the solenoid actuator 150 is supported by the first frame F1 on which the control substrate B1 is arranged, and is located near the first frame F1. Therefore, the path of the first harness H1 connecting the control substrate B1 and the solenoid actuator 150 can be shortened. By shortening the first harness H1, the first harness H1 is prevented from receiving noise from the surroundings, and the first harness H1 is prevented from applying noise to the surroundings. In addition, the cost of wiring can be reduced.

[0186] Furthermore, since the mounting surface B11 of the control substrate B1 faces in a direction away from the movable slide 120 , it is possible to suppress the noise generated by the solenoid actuator 150 from reaching the mounting surface B11 of the control substrate B1 .

[0187] In addition, the first frame F1 is located between the solenoid actuator 150 and the wireless board B3. Therefore, it is possible to suppress the noise generated from the solenoid actuator 150 from reaching the wireless board B3.

[0188] In addition, since the upper end of the wireless substrate B3 is located above the upper end of the solenoid actuator 150, the wireless substrate B3 is less likely to be affected by the noise of the solenoid actuator 150, and the communication stability of the wireless substrate B3 is improved. The communication partner of the wireless substrate B3 is, for example, a portable communication terminal held by a user. Generally speaking, the user holds the portable communication terminal at a higher position than the image forming device 1, so the solenoid actuator 150 is not arranged above the wireless substrate B3 between the wireless substrate B3 and the portable communication terminal, so that it is difficult to receive the noise from the solenoid actuator 150.

[0189] Furthermore, since the cable CB for electrically connecting the control board B1 and the second board B2 is passed under the movable slide 120 , the cable CB is less likely to interfere with the movable slide 120 .

[0190] Moreover, the cable CB passes under the movable slide 120 at a position between the rotation axis X2 of the movable slide 120 and the lowest point BP of the movable slide 120 located at the second position in the conveying direction of the sheet S, so that the cable CB can be routed at a position where the movable slide 120 has a smaller movement amount in the up and down directions, and the cable CB is difficult to interfere with the movable slide 120.

[0191] In addition, the link mechanism 200 for moving the movable slide 120 includes a first link 210, a second link 220, and a third link 230. Therefore, the amount of movement of the movable slide 120 can be made larger than the amount of movement of the solenoid actuator 150. As a result, it is possible to suppress the size of the solenoid actuator 150. By suppressing the size of the solenoid actuator 150, it is possible to suppress power consumption and heat generation.

[0192] In addition, the control unit CU moves the movable slide 120 from the first position to the second position every time an image is formed on one sheet S. Therefore, wrinkles generated in the sheet S can be suppressed.

[0193] Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and specific configurations can be appropriately modified within the scope of the present invention.

[0194] In the above-mentioned embodiment, in the image forming device 1, the transfer roller 53 opposite to the photosensitive drum 51 transfers the toner on the photosensitive drum 51 to the sheet S, but it can also be the following structure: the toner on the photosensitive drum 51 is transferred to the intermediate transfer belt, and the transfer roller or the secondary transfer roller transfers the toner on the intermediate transfer belt to the sheet S.

[0195] In the above-mentioned embodiment, the movable slide 120 can rotate between the first position and the second position around the rotation axis X2 extending in the first direction, but the movable slide 120 may also move between the first position and the second position by sliding.

[0196] In the above embodiment, the image forming device 1 is a monochrome laser printer, but the image forming device may be a color image forming device, a copier, or a multifunction machine. In addition, the image forming device 1 may be an LED-type printer in which the exposure device 40 has a plurality of LEDs, and the plurality of LEDs flash based on image data to expose the surface of the photosensitive drum 51. In addition, the sheet material is not limited to paper, and may be an OHP sheet or the like. In addition, the heating rotating body is not limited to an endless belt, and a roller may be used, and the pressurizing rotating body is not limited to a roller, and an endless belt may be used.

[0197] In addition, each element of each embodiment described above can be implemented by combining them arbitrarily.

Claims

1. An image forming device, characterized in that: have: Main body shell; a transfer roller that rotates around a rotation axis extending in a first direction to transfer the toner image to a sheet; a fuser that fixes the toner image transferred to the sheet to the sheet; a movable slide, the movable slide being located between the transfer roller and the fuser in the conveying direction of the sheet, guiding the sheet, and the movable slide being movable between a first position and a second position, the second position being a position where an end of the downstream side of the sheet in the conveying direction is located below the first position; as well as a solenoid actuator for moving the movable slide between the first position and the second position, The main body housing has: a first frame, which is arranged on one side of the movable slide in the first direction and supports the solenoid actuator; and a second frame disposed on the other side of the main body housing in the first direction relative to the movable slide.

2. The image forming apparatus according to claim 1, wherein: A control substrate is further provided. The control substrate is arranged on the first frame and has a control unit that controls at least the solenoid actuator.

3. The image forming apparatus according to claim 2, wherein: A wiring harness is further provided, the wiring harness connecting the control substrate and the solenoid actuator, The control substrate has a mounting surface on which a first connector connected to the wiring harness is mounted. The mounting surface faces in a direction away from the movable slide in the first direction, and is located farther from the movable slide than the solenoid actuator.

4. The image forming apparatus according to claim 3, wherein: A wireless substrate is provided, the wireless substrate having a substrate for wireless communication and being directly connected to the control substrate, The wireless substrate is arranged on the opposite side of the solenoid actuator across the first frame in the first direction. The solenoid actuator overlaps the wireless substrate via the first frame when viewed from the first direction.

5. The image forming apparatus according to claim 4, wherein: In the first direction, the control substrate is located between the movable slide and the wireless substrate.

6. The image forming apparatus according to claim 4, wherein: An upper end of the wireless substrate is located above an upper end of the solenoid actuator.

7. The image forming apparatus according to claim 2, wherein: The control circuit board further comprises: a second substrate disposed on the second frame; and a cable electrically connecting the control substrate and the second substrate. The movable slide can rotate between the first position and the second position around a rotation axis extending in the first direction. The cable passes under the movable slide at a position between the rotation axis of the movable slide and the lowermost point of the movable slide located at the second position in the conveying direction of the sheet.

8. The image forming apparatus according to claim 1, wherein: The solenoid actuator has a main body and a movable part. The movable portion is movable between a third position and a fourth position moved from the third position in the first direction.

9. The image forming apparatus according to claim 8, wherein: further comprising a link mechanism that causes the movable slide to be located at the first position when the movable portion is located at the third position, and causes the movable slide to be located at the second position when the movable portion is located at the fourth position, The connecting rod mechanism has: a first connecting rod, one end of which is connected to the movable part, and the first connecting rod is movable along the first direction; a second connecting rod connected to the other end of the first connecting rod and capable of rotating around the first axis through the movement of the first connecting rod; as well as A third link is connected to the second link and can be moved between a pressing position and an allowing position by rotating the second link. The pressing position is a position for pressing the movable slide down to the second position, and the allowing position is a position for allowing the movable slide to be located at the first position.

10. The image forming apparatus according to claim 2, wherein: The control unit controls the solenoid actuator to perform the following operations for each sheet on which an image is to be formed: before the downstream end of the sheet in the conveying direction reaches the fixing device, positioning the movable slide at the first position, After the downstream end of the sheet in the conveying direction reaches the fixing device, the movable slide is moved from the first position to the second position.

11. The image forming apparatus according to claim 1, wherein: An exhaust fan is also provided, which can exhaust the air in the main body casing to the outside of the main body casing, The solenoid actuator overlaps the exhaust fan when viewed from the first direction.

12. The image forming apparatus according to claim 11, wherein: A duct is further provided, the duct extending in the first direction between the exhaust fan and the solenoid actuator and forming a flow path for air to flow in the first direction, The solenoid actuator overlaps the flow path of the pipe when viewed from the first direction.

13. The image forming apparatus according to claim 12, wherein: The solenoid actuator has a main body and a movable part. When viewed from the first direction, the entire movable portion overlaps with the exhaust fan.

14. The image forming apparatus according to claim 13, wherein: When viewed from a second direction perpendicular to the first direction and the up-down direction, a portion of the movable portion overlaps with the flow path of the duct.

15. The image forming apparatus according to claim 12, wherein: The exhaust fan is supported by the second frame, The duct extends from the first frame to the second frame.

16. The image forming apparatus according to claim 13, wherein: The movable portion is movable between a third position and a fourth position after moving from the third position along the first direction. The image forming apparatus further includes a link mechanism that causes the movable slide to be located at the first position when the movable portion is located at the third position, and causes the movable slide to be located at the second position when the movable portion is located at the fourth position. A portion of the linkage is located inside the pipe.

17. The image forming apparatus according to claim 16, wherein: The connecting rod mechanism has: a first connecting rod, one end of which is connected to the movable part, and the first connecting rod is movable along the first direction; a second connecting rod connected to the other end of the first connecting rod and capable of rotating around the first axis through movement of the first connecting rod; as well as A third link is connected to the second link and can be moved between a pressing position and an allowing position by rotating the second link. The pressing position is a position for pressing the movable slide down to the second position, and the allowing position is a position for allowing the movable slide to be located at the first position.

18. The image forming apparatus according to claim 12, wherein: When viewed from the top and bottom directions, the pipe overlaps with the movable slideway.

19. The image forming apparatus according to claim 16, wherein: The movable slide has a conveying surface for conveying the sheet, When the movable slide is moved from the first position to the second position, the link mechanism presses the movable slide from the conveying surface side.

20. The image forming apparatus according to claim 11, wherein: The movable slide is rotatable between the first position and the second position around a rotation axis extending in the first direction.

Images