JP2010117658A - Image forming unit, fixing structure of image forming unit, and image forming device including structure thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing structure of an image forming unit with which the fixing accuracy of the image forming unit to an image forming device can be eased. <P>SOLUTION: This fixing structure includes: a toner delivery device 50 which delivers toner stored in a toner cartridge 52 fixed to a device casing; and a developing device 23 which has a toner inlet 230a for introducing the toner and visualizes with the toner an electrostatic latent image formed on a photosensitive drum. The structure is to fix the developing device 23 to the toner delivery device 50 by a toner supply device 54. The toner supply device 54 has: a device body 59 fixed to the developing device 23; and a toner supply member 55 which is displaceably assemble to the device body 59 and has a connection part being connectible to the conveyance passage to the toner inlet 230a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an image forming unit, an image forming unit mounting structure, and an image forming apparatus including the same.

  As a conventional image forming apparatus, there is an image forming apparatus provided with a developing cartridge incorporating a developing device and a toner replenisher for replenishing toner to the developing cartridge (see, for example, Patent Document 1).

In such an image forming apparatus, a toner replenisher (toner cartridge) and a developing cartridge (developing apparatus) are detachably attached to each other, and are independently detachably connected to the image forming apparatus main body. .
JP 2002-72652 A

  An object of the present invention is to provide an image forming unit, an image forming unit mounting structure, and an image forming apparatus provided with the image forming unit that can reduce the mounting accuracy of the image forming unit with respect to the main body of the image forming apparatus.

(1) In order to achieve the above object, the present invention has a toner deriving device for deriving toner accommodated in a toner accommodating body mounted on the image forming apparatus main body, and a toner introducing port for introducing the toner. A developing device for visualizing the electrostatic latent image formed on the photoreceptor for the image forming apparatus with the toner, and the developing device is attached to the toner derivation device by a toner supply device. The toner supply device includes a device main body fixed to the developing device side, a toner supply member having a connecting portion that is detachably assembled to the device main body and that can be connected to a conveyance path to the toner introduction port. , An image forming unit mounting structure having

(2) In the mounting structure of the image forming unit according to (1), the toner supply member is formed by a cylindrical body having a claw portion with the connection portion protruding on an outer peripheral surface, and the apparatus main body includes the connection body. An insertion hole for inserting the portion, and a locking piece for locking the claw portion on the inner peripheral surface of the insertion hole.

(3) In the image forming unit mounting structure described in (1) above, the toner supply member includes a first shutter that opens and closes a toner container side opening of the connection portion, and the first shutter is connected to the connection portion. Is always urged by the first urging means in a direction to close the toner container side opening of the portion.

(4) In the image forming unit mounting structure described in (1) above, the toner lead-out device has a toner lead-out pipe connected to the toner container side opening of the connection portion, and the toner supply device is connected to the connection portion. And a toner introduction pipe connected to the toner introduction opening of the developing device.

(5) In the image forming unit mounting structure described in (4) above, the toner introduction pipe is formed by a pipe that can be flexibly deformed.

(6) In the image forming unit mounting structure according to (4), the toner outlet pipe has a second shutter that opens and closes an opening on the toner supply member side, and the second shutter supplies the toner. It is always urged by the second urging means in a direction to close the member side opening.

(7) In order to achieve the above object, the present invention provides an image forming apparatus provided with the image forming unit mounting structure described in any one of (1) to (6) above.

(8) In order to achieve the above-mentioned object, the present invention provides a developing device for visualizing an electrostatic latent image formed on a photoreceptor by a toner introduction port for receiving toner and formed by the received toner, A toner supply device comprising: a device main body fixed to the developing device side; and a toner supply member that is detachably assembled to the device main body and has a connection portion that can be connected to a path to the toner introduction port. An image forming unit is provided.

  According to the mounting structure of the image forming unit of the first aspect, it is possible to reduce the mounting accuracy of the image forming unit with respect to the main body of the image forming apparatus as compared with the case where the present configuration is not provided.

  According to the mounting structure of the image forming unit according to the second aspect, the mounting accuracy of the image forming unit with respect to the image forming apparatus main body can be relaxed as compared with the case where this configuration is not provided.

  According to the image forming unit mounting structure of the third aspect, it is possible to prevent the toner from leaking from the image forming unit when the image forming unit is detached from the image forming apparatus.

  According to the image forming unit mounting structure of the fourth aspect, the toner transport path is performed by connecting the toner outlet pipe and the toner introduction pipe.

  According to the mounting structure of the image forming unit according to the fifth aspect, the connection error when the toner introduction pipe is connected to the toner supply member is absorbed.

  According to the image forming unit mounting structure of the sixth aspect, it is possible to prevent the toner from leaking from the image forming unit when the image forming unit is detached from the image forming apparatus.

According to the image forming apparatus of the seventh aspect, it is possible to reduce the mounting accuracy of the image forming unit with respect to the image forming apparatus main body as compared with the case where the present configuration is not provided. .

  According to the image forming unit of the eighth aspect, it is possible to reduce the mounting accuracy of the image forming unit with respect to the image forming apparatus main body as compared with the case where the present configuration is not provided.

[Embodiment]
First, an image forming apparatus according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a cross-sectional view for explaining the entire image forming apparatus to which a developing device mounting structure according to an embodiment of the present invention is applied.

[Overall configuration of image forming apparatus]
In FIG. 1, an image forming apparatus denoted by reference numeral 100 includes, for example, a tandem image forming apparatus, includes an apparatus housing 101, and includes an image forming unit 102 and a paper supply unit 103 in the apparatus housing 101. Applies to copiers.

(Configuration of device casing 101)
The upper part of the apparatus housing 101 is formed as a discharge tray 104. In the apparatus housing 101, an accommodation space 105 that accommodates the image forming unit 102, the paper supply unit 103, and the like, and a paper conveyance path that guides the paper supplied from the paper supply unit 103 to the image forming unit 102 and the discharge tray 104. 106 are provided.

(Configuration of image forming unit 102)
The image forming unit 102 includes a first image forming unit 2K that transfers a black (K) toner image, a second image forming unit 2Y that transfers a yellow (Y) toner image, and a magenta (M) toner. A third image forming unit 2M for transferring an image; a fourth image forming unit 2C for transferring a cyan (C) toner image; and image forming units 2K, 2Y, 2M, 2C arranged at the primary transfer position. Transfer devices 3K, 3C, 3M, and 3Y that transfer the black, yellow, magenta, and cyan toner images respectively formed on the intermediate transfer belt 30; and a drive roll 4 that rotationally drives the intermediate transfer belt 30 in the direction of arrow R; , Support rolls 5A to 5C that rotatably support the intermediate transfer belt 30 with a predetermined tension, a cleaning unit 6 that cleans the surface of the intermediate transfer belt 30, and an intermediate transfer A secondary transfer roll 7 that secondarily transfers the toner image transferred onto the belt 30 onto the paper P, a fixing unit 8 that fixes the toner image transferred onto the paper P, and image forming units 2K, 2Y, 2M, and 2C. And an exposure device 31 that exposes the photosensitive drum 20 as a photosensitive member configured together with the developing device 23. The exposure device 31 is disposed above the paper supply unit 103 and accommodated in the accommodation space 105. The exposure device 31 exposes the photosensitive drum 20 through a mirror 311 with a laser beam 310 modulated based on image data of each color (K, Y, M, C) to form an electrostatic latent image.

  The image forming units 2K, 2Y, 2M, and 2C are configured to be attachable to the apparatus housing 101. Each of the image forming units 2K, 2Y, 2M, and 2C charges the photosensitive drum 20 having the photosensitive layer on the surface and the photosensitive drum 20 before exposure. A charging device 21, a developing device 23 (shown in FIG. 6) that develops (visualizes) each color toner corresponding to the electrostatic latent image formed on the photosensitive drum 20, and a static elimination device that neutralizes the photosensitive drum 20. 25 and a drum cleaning unit 26 for removing residual toner remaining on the photosensitive drum 20 after the primary transfer.

  In the paper transport path 106, a transport roll 10 that transports the paper P from the paper feed tray 9 in the paper feed direction is provided upstream, and functions as a transport member in the vicinity of the discharge port together with the secondary transfer roll 7 and the fixing unit 8. The discharge rolls 11 are arranged respectively.

(Configuration of paper supply unit 103)
The paper supply unit 103 includes a paper feed tray 9 on which the paper P is stacked, has a paper feed roll 12, is disposed below the image forming unit 102, and is accommodated in the accommodation space 105.

  Next, an image forming unit mounting structure according to an embodiment of the present invention will be described with reference to FIGS.

(Overall configuration of image forming unit mounting structure)
FIG. 2 is a perspective view for explaining the mounting structure of the image forming unit according to the embodiment of the present invention. FIG. 3 is a perspective view showing a part of the image forming unit mounting structure according to the embodiment of the present invention. FIG. 4 is a cross-sectional view for explaining the mounting structure of the image forming unit according to the embodiment of the present invention. 2 to 4, an image forming unit (developing device 23) attachment structure denoted by reference numeral 51 is a toner that guides toner from a toner cartridge 52 as a toner container that is detachably mounted (not shown) to the developing device 23. A deriving device 50 (shown in FIG. 5) and a developing device 23 (shown in FIG. 1) that receives the supply of toner from the toner deriving device 50 are provided, and an apparatus housing 101 (shown in FIG. 1) as the image forming apparatus main body. The developing device 23 can be attached by a toner supply device 54.

(Configuration of Toner Deriving Device 50)
FIG. 5 is a perspective view showing the shutter open state of the toner outlet pipe in the image forming unit mounting structure according to the embodiment of the present invention. Here, it is assumed that the toner outlet device 50 includes the toner outlet 52a to the second shutter.

  As shown in FIG. 5, the toner cartridge 52 (not shown) is detachably accommodated in the image forming apparatus 100 (shown in FIG. 1), and is connected to the toner outlet device 50 when attached to the image forming apparatus 100. The toner lead-out device 50 has a toner lead-out port 52a for feeding the toner contained in the toner cartridge 52 to the toner supply device 54 through the toner lead-out pipe 56, and a toner supply member of the toner supply device 54 (shown in FIG. 3). 55 is disposed above.

  As shown in FIG. 3, the toner outlet pipe 56 has a pipe-side base 560 and a second shutter 561, is connected to the toner cartridge-side opening of the connecting portion 60 in the toner supply member 55, and is connected to the upper end of the pipe and The lower end of the pipe is fixed to the apparatus housing 101 (shown in FIG. 1) by a fixing member (not shown).

  The pipe-side base 560 is a pressing force for applying a pressing force in the opening direction to the through-hole 560a communicating with the opening on the toner supply device 54 (toner supply member 55) side and the first shutter 551 of the toner supply member 55. It has an applying portion 560 b and is provided integrally with the opening end portion of the toner outlet pipe 56.

  The second shutter 561 has spring locking portions 561a and 561a for locking springs as urging means, and is located below the pipe side base 560 at a position indicated by a two-dot chain line in FIG. 5 and a solid line in FIG. It is arrange | positioned so that reciprocation is possible between the positions shown by. The second shutter 561 is configured to open and close the through hole 560a of the pipe-side base 560 by attaching / detaching the image forming unit to / from the toner outlet device 50.

  The second shutter 561 is constantly given a resilient force in a direction to close the through hole 560a of the pipe side base 560 by a second spring 57 as a second urging means.

  As for the 2nd spring 57, the spring intermediate part is spanned over the outer peripheral surface of the toner derivation | leading-out pipe 56, and the spring both ends are each latched by spring latching | locking part 561a, 561a.

(Configuration of developing device 23)
FIG. 6 is a cross-sectional view for explaining the developing device in the image forming unit mounting structure according to the embodiment of the present invention.

  As shown in FIG. 3, the developing device 23 includes a housing 230 having a toner inlet 230a, is attached to the housing 200 for housing the photosensitive drum below the toner supply member 55 of the toner supply device 54, and forms an image. The apparatus 100 (shown in FIG. 1) is detachably accommodated in an accommodation space 105.

  As shown in FIG. 6, the developing device 23 includes a magnet roll 530 that supplies toner adhered to the carrier to the photosensitive drum 20 (shown in FIG. 1), and spiral augers 531 and 532 that are parallel to the magnet roll 530. Built in. As a result, when the magnet roll 530 and the spiral augers 531 and 532 rotate, the toner in the developing device 23 moves in one direction (direction perpendicular to the paper surface) along the axis of the spiral auger 531 and in the opposite direction. The materials are conveyed while being stirred along the axis of the spiral auger 532, supplied uniformly to the magnet roll 530, and then supplied from the magnet roll 530 to the photosensitive drum 20. Further, a toner introduction pipe 58 (shown in FIG. 3) that is in communication with the toner introduction port 230a is attached to the developing device 23.

  As shown in FIG. 3, the toner introduction pipe 58 is a pipe that can be deformed flexibly, and is connected to an opening portion of the toner supply member 55 opposite to the toner cartridge side opening portion of the connection portion 60 so as to transfer the toner. Is formed. As a result, a connection error when the toner introduction pipe 58 is connected to the toner supply member 55 is absorbed. Further, even when the toner supply member 55 is displaced, the toner introduction pipe 58 follows so that the toner can be conveyed.

(Configuration of Toner Supply Device 54)
FIG. 7 is a perspective view for explaining the apparatus main body of the toner supply apparatus according to the embodiment of the present invention. FIG. 8 is a cross-sectional view showing the shutter open state of the toner supply member according to the embodiment of the present invention. FIGS. 9A and 9B are perspective views illustrating the toner supply member of the toner supply device according to the embodiment of the present invention. FIG. 9A shows a case when viewed from obliquely above, and FIG. 9B shows a case when viewed from obliquely below.

  As shown in FIG. 3, the toner supply device 54 includes a device main body 59 and a toner supply member 55 provided at the front end of the developing device 23 in the mounting direction, and is disposed between the toner outlet pipe 56 and the toner introduction pipe 58. The developing device 23 is attached to the toner lead-out device 50 (shown in FIG. 5) via the toner supply device.

  As shown in FIG. 7, the apparatus main body 59 has an insertion hole 59a through which the connection part 60 of the toner supply member 55 (shown in FIG. 9) is inserted, and a claw part 60a of the connection part 60 on the inner peripheral surface of the insertion hole 59a. It has an elastically deformable locking piece 59b to be locked, and is fixed to the developing device 23 side (housing 230). Although the locking piece 59b can be elastically deformed, the claw portion 60a may be elastically deformable, and both may not be elastically deformed, but may be locked to each other.

  The apparatus main body 59 is provided with a supporting convex portion 59 c for supporting the toner supply member 55.

As shown in FIG. 8, the toner supply member 55 includes a base 550 and a first shutter 551. As shown in FIG. 4, the outer peripheral surface of the connecting portion 60 has a locking piece 59b of the apparatus main body 59 and a gap g ₁ (0. 5 to 3 mm, preferably about 1 to 2 mm), and the toner cartridge side end surface of the claw portion 60a is spaced from the developing device side end surface of the locking piece 59b with a gap g ₂ (0.5 to 3 mm, preferably about 1 to 2 mm). Are assembled to the apparatus main body 59 so as to be displaceable. Accordingly, when the toner supply member 55 is assembled to the apparatus main body 59, the connection of the toner outlet pipe 56 (shown in FIG. 3) to the toner supply member 55 (connection portion 60) and the toner introduction pipe 58 (shown in FIG. 3). As long as the connection to the connection portion 60 is not hindered, the assembly is displaceable around the axis of the insertion hole 59a of the apparatus main body 59, in a plane orthogonal to the axis of the insertion hole 59a, and in a plane parallel to the axis. As a result, the assembly accuracy of the toner supply member 55 to the apparatus main body 59, that is, the mounting accuracy of the developing device 23 (image forming units 2K, 2Y, 2M, 2C) to the image forming apparatus 100 is reduced.

  As shown in FIG. 9, the base 550 has a through hole 550a that opens to the toner outlet device 50 side and the developing device 23 side, and includes a toner introduction pipe 58 (shown in FIG. 3) and a toner outlet pipe 56 (shown in FIG. 3). It is interposed between

  The base 550 has a first seating portion 550c seated in the vicinity of the supporting convex portion 59c (shown in FIG. 7) of the apparatus main body 59, a second seating portion 550d seated in the housing 230 (shown in FIG. 2), and a first shutter. The first guide portion 550e, the second guide portion 550f for guiding the both side portions and the lower side portion of the 551, and the pressing force applying portion 550g for applying the pressing force in the opening direction to the second shutter 561 of the toner outlet pipe 56, respectively. Is provided. The base 550 is integrally provided with a substantially cylindrical connecting portion 60 that protrudes from the outer peripheral surface and has a claw portion 60 a corresponding to the locking piece 59 b of the apparatus main body 59.

  As shown in FIG. 3, the connecting portion 60 is connected to the toner introduction port 230 a of the developing device 23 via a toner introduction pipe 58. Further, as shown in FIG. 5, the toner cartridge 52 and the developing device 23 are connected via the toner outlet 52 a of the toner outlet 50 to the toner outlet pipe 56.

As shown in FIG. 8, the first shutter 551 has spring locking portions 551a and 551a, and is disposed on the base 550 so as to be able to reciprocate between a position indicated by a two-dot chain line and a position indicated by a solid line. ing. The first shutter 551 is configured to open and close the through hole 550a of the base 550 (the toner cartridge side opening of the connecting portion 60) by attaching and detaching the toner supply device 54 to and from the toner outlet device 50.

  The first shutter 551 is constantly given a resilient force in a direction to close the through hole 550a of the base 550 by a first spring 61 as a first urging means. Here, urging means that a force is always applied in one direction, and includes urging by a pulling force as well as urging by a pressing force.

  As for the 1st spring 61, the spring intermediate part is spanned on the outer peripheral surface of the connection part 60, and the both ends of a spring are latched by spring latching | locking part 551a, 551a, respectively.

[Mounting method of image forming unit]
Next, a method for attaching the image forming unit according to the embodiment of the present invention to the image forming apparatus 100 will be described with reference to FIG. FIG. 10 is a flowchart for explaining a method of attaching the image forming unit according to the embodiment of the present invention to the image forming apparatus 100.

  In the initial state, the developing device 23 is assembled to the housing 200 to assemble the image forming units 2K, 2C, 2M, and 2Y, and the toner cartridge 52 is mounted on the toner cartridge side opening of the toner outlet pipe 56 via a shutter (not shown). It is mounted in the housing 101. Further, the through hole 550 a of the toner supply member 55 is closed by the first shutter 551, and the through hole 560 a of the toner outlet pipe 56 is closed by the second shutter 561.

“Assembling the toner supply device”
By inserting the connecting portion 60 of the toner supply member 55 into the insertion hole 59a of the apparatus main body 59 in the toner supply device 54, and supporting the first seating portion 550c and the second seating portion 550d on the device main body 59 and the housing 230, respectively. Then, the toner supply member 55 is assembled to the apparatus main body 59. In this case, when the connecting portion 60 of the toner supply member 55 is inserted into the insertion hole 59 a of the apparatus main body 59, the locking piece 59 b of the apparatus main body 59 receives a pressing (insertion) force from the claw portion 60 a of the connecting portion 60. After the elastic deformation of the locking piece 59b, that is, after the connection portion 60 of the toner supply member 55 is inserted into the insertion hole 59a of the apparatus main body 59, the claw portion 60a of the connection section 60 is moved by the locking piece 59b of the apparatus main body 59. Locked. When the toner supply member 55 is assembled to the apparatus main body 59, the toner supply apparatus 54 is assembled (step S1 in FIG. 10).

“Installing the toner supply device”
The toner supply member-side opening of the toner introduction pipe 58 connected in advance to the toner introduction port 230a of the developing device 23 is connected to the developing device-side opening of the connecting portion 60 of the toner supply member 55, and the developing device 23 side (housing) 230), the main body 59 of the toner supply device 54 is fixed. In this case, when the apparatus main body 59 of the toner supply device 54 is fixed to the housing 230, the toner supply device 54 is attached to the developing device 23 (image forming units 2K, 2Y, 2M, 2C) (step S2 in FIG. 10).

"Installing the developing device"
First, the toner cartridge side opening of the connecting portion 60 of the toner supply member 55 is connected to the toner supply member side opening of the toner outlet pipe 56 and the developing device 23 (image forming units 2K, 2Y,. 2M, 2C) is attached (step S3 in FIG. 10). In this case, when the developing device 23 is attached in the apparatus housing 101, the toner introduction pipe 58 and the toner outlet pipe 56 are connected via the toner supply member 55 of the toner supply apparatus 54. At this time, the pressing force applying portion 550g of the toner supply member 55 in the toner supply device 54 applies a pressing force in the opening direction to the second shutter 561 of the toner outlet pipe 56, so that the second shutter 561 moves from the closed state to the opening direction. The toner spring moves forward against the resilience of the second spring 57, and the toner supply member side opening of the toner outlet pipe 56 is opened. At the same time, the pressing force applying portion 560b of the pipe-side base 560 in the toner outlet pipe 56 applies a pressing force in the opening direction to the first shutter 551 of the toner supply member 55 in the toner supply device 54, so that the first shutter 551 is closed. The toner cartridge moves forward in the opening direction against the elastic force of the first spring 61, and the toner cartridge side opening of the connecting portion 60 in the toner supply member 55 is opened.

  In this way, the developing device 23, that is, the image forming unit images 2K, 2Y, 2M, and 2C, is attached to the toner derivation device 50 so that toner can be supplied. When the mounting state of the developing device 23 in the apparatus housing 101 is released, the first shutter 551 is moved back from the open state to the closing direction by the first spring 61 and the second shutter 561 is moved by the second spring 57, respectively. The toner supply member side opening of the toner outlet pipe 56 and the toner cartridge side opening of the connecting portion 60 in the toner supply member 55 are closed by the second shutter 561 and the first shutter 551, respectively.

  Although the image forming apparatus of the present invention has been described based on the above-described embodiment, the present invention is not limited to the above-described embodiment, and can be implemented in various modes without departing from the gist thereof. For example, the following modifications are possible.

(1) In the above embodiment, the toner supply device 54 is connected to the toner introduction pipe 58. However, the toner supply device 54 may be connected to the toner outlet of the toner cartridge 52 without using the toner introduction pipe 58. Good.

(2) In the above embodiment, the image forming unit has been described using the developing device. However, the image forming unit may include other members (for example, a photoconductor) that contribute to image formation.

(3) In the above embodiment, the case where the present invention is applied to a copying machine has been described. However, the present invention is not limited to this, and may be applied to a printer or a facsimile. You may apply to the compound machine which combines two.

(4) Although the case where the image forming apparatus 100 is a color image forming apparatus using a plurality of photosensitive drums 20 has been described in the above embodiment, the present invention is not limited to this, and a single photosensitive drum is used. It may be a monochrome image forming apparatus using

FIG. 1 is a cross-sectional view for explaining the entire image forming apparatus to which a paper feeding device according to an embodiment of the present invention is applied. FIG. 2 is a perspective view for explaining the mounting structure of the image forming unit according to the embodiment of the present invention. FIG. 3 is a perspective view showing a part of the image forming unit mounting structure according to the embodiment of the present invention. FIG. 4 is a cross-sectional view for explaining the mounting structure of the image forming unit according to the embodiment of the present invention. FIG. 5 is a perspective view showing the shutter open state of the toner outlet pipe in the image forming unit mounting structure according to the embodiment of the present invention. FIG. 6 is a cross-sectional view for explaining the developing device in the image forming unit mounting structure according to the embodiment of the present invention. FIG. 7 is a perspective view for explaining the apparatus main body of the toner supply apparatus according to the embodiment of the present invention. FIG. 8 is a cross-sectional view showing the shutter open state of the toner supply member according to the embodiment of the present invention. FIGS. 9A and 9B are perspective views illustrating the toner supply member of the toner supply device according to the embodiment of the present invention. FIG. 10 is a block diagram for explaining a method of attaching the image forming unit to the toner derivation device according to the embodiment of the present invention.

Explanation of symbols

  2K: First image forming unit, 2Y: Second image forming unit, 2M: Third image forming unit, 2C: Fourth image forming unit, 3K, 3C, 3M, 3Y: Transfer device, 4: Drive Rolls, 5A to 5C ... support rolls, 6 ... cleaning unit, 7 ... secondary transfer roll, 8 ... fixing unit, 9 ... feed tray, 10 ... conveying roll, 11 ... discharge roll, 12 ... feed roll, 20 ... Photosensitive drum, 23 ... developing device, 24 ... transfer device, 25 ... static discharge device, 26 ... drum cleaning unit, 30 ... intermediate transfer belt, 31 ... exposure device, 51 ... image forming unit mounting structure, 52 ... toner cartridge, 52a ... toner outlet, 53 ... developing device, 54 ... toner supply device, 55 ... toner supply member, 56 ... toner outlet pipe, 57 ... second spring, 58 ... toner introduction pipe, 59 ... device book , 59a ... insertion hole, 59b ... locking piece, 59c ... supporting convex part, 59d ... pressing force applying part, 60 ... connection part, 60a ... claw part, 61 ... first spring, 100 ... image forming apparatus, 101 ... Device housing 102 ... Image forming unit 103 ... Paper supply unit 104 ... Discharge tray 105 ... Storage space 106 ... Paper transport path 200 ... Housing 230 ... Housing 230a ... Toner inlet 310 ... Laser beam 311 ... Mirror, 530 ... Magnet roll, 531, 532 ... Spiral auger, 550 ... Base, 550a ... Through hole, 550b ... Through window, 550c ... First seat portion, 550d ... Second seat portion, 550e ... First guide Part, 550f ... second guide part, 550g ... pressing force application part, 551 ... first shutter, 551a ... spring locking part, 560 ... pipe side base Scan, 560a ... through hole, 560b ... pressing force imparting unit, 561 ... second shutter, 561a ... spring locking portion

Claims (8)

A toner deriving device for deriving toner contained in a toner containing body mounted on the image forming apparatus main body;
A toner introduction port for introducing the toner, and a developing device for visualizing the electrostatic latent image formed on the photoreceptor for the image forming apparatus with the toner,
The developing device is attached to the toner lead-out device by a toner supply device,
The toner supply device includes:
An apparatus main body fixed to the developing device side;
An image forming unit mounting structure comprising: a toner supply member having a connection portion that is detachably assembled to the apparatus main body and that can be connected to a conveyance path to the toner introduction port. The toner supply member is formed of a cylindrical body having a claw portion with the connection portion protruding on an outer peripheral surface;
The image forming unit mounting structure according to claim 1, wherein the apparatus main body includes an insertion hole through which the connection portion is inserted, and an engagement piece that engages the claw portion with an inner peripheral surface of the insertion hole.   The toner supply member includes a first shutter that opens and closes a toner container-side opening of the connecting portion, and the first shutter biases the first shutter in a direction that closes the toner container-side opening of the connecting portion. 2. The mounting structure for an image forming unit according to claim 1, wherein the structure is always urged by means. The toner lead-out device has a toner lead-out pipe connected to a toner container side opening of the connection part,
2. The image forming unit mounting structure according to claim 1, wherein the toner supply device includes an opening on the side opposite to the toner container side opening of the connection portion and a toner introduction pipe connected to the toner introduction port of the developing device. .   The image forming unit mounting structure according to claim 4, wherein the toner introduction pipe is formed of a pipe that can be flexibly deformed.   The toner outlet pipe has a second shutter that opens and closes an opening on the toner supply member side, and the second shutter is closed by a second urging unit in a direction to close the opening on the toner supply member side. The image forming unit mounting structure according to claim 4, wherein the structure is always energized.   An image forming apparatus comprising the image forming unit mounting structure according to claim 1. A developing device for visualizing an electrostatic latent image formed on the photoreceptor with a toner introduction port for receiving toner formed thereon;
A toner supply device comprising: an apparatus main body fixed to the developing device side; and a toner supply member that is detachably assembled to the apparatus main body and has a connection portion that can be connected to a path to the toner introduction port. An image forming unit.

Images