JP2011175138A - Truck for unit attachment and detachment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate attachment and detachment of a large-sized unit for maintenance and to prevent the unit from falling. <P>SOLUTION: A truck for unit attachment and detachment is used for attaching and detaching a unit, which is held detachably in an image forming apparatus, and is connectable to the image forming apparatus. The truck includes: a placing table on which the unit is placed; a unit fixing means for fixing the unit placed on the placing table; a connecting means for connecting to the image forming apparatus; and a disconnecting means for disconnecting from the image forming apparatus. The unit placed on the placing table is fixed by the unit fixing means, thereby operating the disconnecting means, and hence disconnecting the connecting means from the image forming apparatus. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a unit attaching / detaching carriage for attaching / detaching a unit to / from an image forming apparatus such as a copying machine or a printer.

  In recent years, there has been a demand for an image forming apparatus that can form higher-quality images at higher speeds. However, along with this, some units constituting the image forming apparatus have parts that require regular maintenance and replacement. is increasing. Image forming apparatuses capable of high-speed processing with high image quality tend to be used as light printing apparatuses. When the image forming apparatus is used as a light printing apparatus, the image forming apparatus may be configured to reduce downtime so that the user can easily perform periodic maintenance and replacement of parts. There is a growing tendency to be required.

  On the other hand, with the increase in speed and functionality of image forming apparatuses and the diversification of paper sizes, the size of units has increased and the mass has increased. In addition, there is a risk of dropping the unit.

  One of the units constituting the image forming apparatus is, for example, a fixing device using a heating method. A technology in which when a fixing device is attached to or detached from an image forming apparatus for maintenance or repair, a paper discharge unit equipped with a mounting table that can be moved up and down is used as a dual-purpose cart, and the fixing device is mounted on the mounting table to be attached or detached. Is disclosed (for example, see Patent Document 1). The technique disclosed in Patent Document 1 has a configuration for quickly and safely attaching and detaching a fixing device heated to a high temperature.

JP 2008-122765 A

  However, when the unit such as the fixing device described in Patent Document 1 is increased in size and mass, it is necessary to increase the strength of the mounting table peripheral mechanism unit that moves up and down by loading paper. There is a problem that the capacity of a motor or the like that is a driving source of the motor must be increased. Further, there is a problem in that the mechanism becomes complicated because it has two functions of a paper discharge function as a paper discharge unit and a function of placing and removing the fixing device. Furthermore, in the technique disclosed in Patent Document 1, there is no description about measures against the danger of unit dropping.

  An object of the present invention is for unit attachment / detachment that solves the above-described problems, can be easily attached / detached for maintenance, and can prevent the unit from dropping. To provide a dolly.

  The object is achieved by the following invention.

1. A unit detachable carriage that can be connected to the image forming apparatus, and is used to attach and detach a unit that is detachably held in the image forming apparatus.
A mounting table for mounting the unit;
Unit fixing means for fixing the unit mounted on the mounting table;
Connecting means for connecting to the image forming apparatus;
A connection release means for releasing the connection with the image forming apparatus,
The unit mounted on the mounting table is fixed by the unit fixing unit, so that the connection release unit is operated, and the connection unit can release the connection with the image forming apparatus. The unit detachable cart.

  By using the unit detachable carriage according to the present invention, it becomes easy to detach from the image forming apparatus for maintenance with respect to a unit that becomes large and has a large mass, and avoids the risk of dropping the unit during detachment. be able to.

1 is an overall configuration diagram showing an embodiment of an image forming apparatus A including a unit C to which a unit detachable carriage 10 of the present invention can be applied. 1 is an external perspective view of a unit mounting carriage 10 and an image forming apparatus A according to the present invention. It is a schematic block diagram for demonstrating the structure and operation | movement about 1st Embodiment of the truck 10 for unit attachment / detachment which concerns on this invention. It is a flowchart for demonstrating the procedure which moves the unit C in 1st Embodiment of the truck 10 for unit attachment / detachment which concerns on this invention. It is a schematic block diagram for demonstrating the structure and operation | movement about 2nd Embodiment of the truck 10 for unit attachment / detachment which concerns on this invention. It is a flowchart for demonstrating the procedure to which the unit C in 2nd Embodiment of the truck 10 for unit attachment / detachment which concerns on this invention is moved.

  Hereinafter, although the structure and operation | movement of embodiment which concern on the unit detachable trolley | bogie of this invention are demonstrated, this invention is not limited to this embodiment.

  FIG. 1 is an overall configuration diagram showing an embodiment of an image forming apparatus A provided with a unit C to which a unit mounting carriage 10 of the present invention can be applied, and FIG. 2 shows a unit mounting truck 10 according to the present invention. 2 is an external perspective view of the image forming apparatus A and FIG.

  First, an image forming apparatus A to / from which the unit C is attached / detached using the unit attaching / detaching carriage 10 of the present invention will be described with reference to FIG.

[Image forming apparatus A]
In FIG. 1, an image forming apparatus A includes a charging unit 2, an image exposure unit (writing unit) 3, a developing unit 4, a transfer unit 5A, a charge removing unit 5B, and a cleaning unit 6 around a rotating image carrier 1. It has an arranged image forming unit. In the image formation on the image carrier 1, the surface of the image carrier 1 is uniformly charged by the charging unit 2, and then the exposure scanning based on the image data read from the original by the laser beam of the image exposure unit 3 is performed. As a result, a latent image is formed. The latent image is reversely developed by the developing means 4, whereby a toner image is formed on the surface of the image carrier 1.

  On the other hand, the recording paper S stored in the recording paper storage means 7A is fed by the paper feeding means 7B and sent to the transfer position. The toner image is transferred onto the recording paper S by the transfer means 5A at the transfer position. Thereafter, the charge on the back surface of the recording paper S is erased by the charge eliminating means 5B, separated from the image carrier 1, conveyed by the intermediate conveying means 7C, and subsequently heated and fixed by the fixing means C as a unit according to the present invention. The paper is discharged by a paper discharge means 7D to a paper discharge tray (not shown).

  When image formation is performed on both sides of the recording sheet S, the recording sheet S heated and fixed by the fixing unit C is branched from the normal sheet discharge path by the conveyance path switching plate 7E, and is switched back by the reverse conveyance unit 7F. Then, an image is formed on the back surface by reversing the front and back, and the paper is discharged by the paper discharge means 7D. The fixing unit C is configured to be removable from the front by opening the front door T of the image forming apparatus A during maintenance such as component replacement.

  On the upper front side of the image forming apparatus A, an operation unit 9 capable of inputting job information related to image formation is disposed. Based on the job information input from the operation unit 9, the image forming apparatus A forms an image. The operation unit 9 includes buttons for selecting various operation modes of the image forming apparatus A and a display indicating the state of the image forming apparatus A.

  On the upper part of the image forming apparatus A, an image reading apparatus B provided with an automatic document feeder of a document moving type reading system is installed.

[Unit detachable carriage]
In FIG. 2, a unit detachable carriage 10 according to the present invention is a carriage used when a unit C such as a detachable fixing device constituting the image forming apparatus A is attached to or detached from the image forming apparatus A. For example, with respect to the unit C that is attached / detached from the front side of the image forming apparatus A shown in FIG. Detachable.

  The unit detachable carriage 10 includes a mounting table 11 on which the unit C is mounted, guide members 17a and 17b, a support column 12, a bottom plate 13, a caster 14, a fixed positioning member 25b as a unit fixing means, and the like. On the upper surface of the mounting table 11 on which the unit C is mounted, a fixed positioning member 25b, guide members 17a and 17b, and the like are disposed. The fixed positioning member 25b will be described later (see FIG. 3). A plurality of casters 14 are disposed on the bottom plate 13 that forms the bottom of the unit detachable carriage 10. The unit detachable carriage 10 moved by the caster 14 is positioned with respect to the image forming apparatus A by guide means using a guide pin or the like (not shown) and is connected by connection means described later. By connecting the unit detachable carriage 10 and the image forming apparatus A, the unit C can be moved to the unit detachable carriage 10 and guided by the guide members 17 a and 17 b to be placed at a fixed position described later on the placement table 11. And fixed.

  Thereafter, the unit attachment / detachment carriage 10 is separated from the image forming apparatus A, and maintenance work such as component replacement is performed on the unit attachment / detachment carriage 10.

  FIG. 3 is a schematic configuration diagram for explaining the configuration and operation of the first embodiment of the unit detachable carriage 10 according to the present invention.

  In FIG. 3, the unit attaching / detaching carriage 10 is connected to the image forming apparatus A, and the unit C is moved from the image forming apparatus A into the unit attaching / detaching carriage 10 and placed thereon.

  A groove cam 11a is formed on the front surface of the mounting table 11 of the unit mounting carriage 10 to which the above-described fixed positioning member 25b is attached. The cam pin 23 is engaged with the groove cam 11a, and the cam pin 23 is a groove. It is held so that it can move along. The mounting table 11 is provided with a connecting lever 21, a shaft 21a, a connecting lever spring 22, a cam pin 23, a cam pin spring 24, and the like. Reference numeral A <b> 1 is a connecting pin fixed to the image forming apparatus A.

  In the present embodiment, the connecting means includes the connecting lever 21, the connecting pin A1, the connecting lever spring 22, and the like, and the connection releasing means includes the cam pin 23, the cam pin spring 24, and the like. The connecting lever 21 is rotatably held by a shaft 21 a and is urged by a connecting lever spring 22. One end of the connecting lever spring 22 is attached to a pin 21 b fixed near the tip of the connecting lever 21, and the other end is attached to a pin 22 a fixed to the mounting table 11. When the connecting lever 21 is located at the position of the solid line shown in FIG. 3A, the line connecting the pin 21b and the pin 22a is below the shaft 21a, so that the connecting lever 21 rotates counterclockwise. Be energized. However, when the connecting lever 21 is rotated clockwise and positioned at the position of the two-dot chain line shown in FIG. 3, the line connecting the pin 21b and the pin 22a is positioned above the shaft 21a. It is urged to rotate in the clockwise direction opposite to the solid line. Further, a knob 21c (not shown) is fixed to the pin 21b, and the operator can move the connecting lever 21 to either a solid line position or a two-dot chain line by the knob 21c.

  On the other hand, the groove cam 11a is formed in an L-shape extending in two directions, ie, an up-down direction and a left-right direction, and an end portion 11a1 in the up-down direction and an end portion in the left-right direction are provided at each end of the groove portion. Two ends of 11a2 are formed. The cam pin 23 inserted into the groove cam 11a is disposed so as to be movable between the two end portions of the end portion 11a1 and the end portion 11a2 along the groove cam 11a. Further, the cam pin 23 is urged diagonally to the lower right in FIG. 3 by a cam pin spring 24. By this urging, the cam pin 23 is moved along the groove portion of the groove cam 11a until it hits either the end portion 11a1 or the end portion 11a2.

  When the cam pin 23 is in the position of the end portion 11a1 shown in FIG. 3, the cam pin 23 is in contact with a part of the connecting lever 21, and the operator moves the connecting lever 21 in the clockwise direction (position indicated by a two-dot chain line). Is blocking. That is, when the cam pin 23 is in the position of the end portion 11a1, the connecting state where the connecting lever 21 engages with the connecting pin A1 of the image forming apparatus A cannot be released. Can't be separated from

  A movable positioning member 25a is fixed to the cam pin 23. When the cam pin 23 is moved from the end portion 11a1 to the end portion 11a2, the movable positioning member 25a is rotated clockwise from the position indicated by the broken line. It is moved to the position of the two-dot chain line that fixes C. The movable positioning member 25a is guided by guide means (not shown), and is configured such that the vertical direction does not change even when the cam pin 23 moves.

  In the present embodiment, the unit fixing means includes a movable positioning member 25a fixed to the cam pin 23, the above-described fixed positioning member 25b, and the like. The movable positioning member 25a and the fixed positioning member 25b fix the unit C mounted on the mounting table 11 at a fixed position. The fixed position here is a normal placement position when the unit C is placed on the placement table 11 of the unit detachable carriage 10, and the positioning grooves C1 and C2 of the unit C include the movable positioning member 25a and This is a position that is fixed in contact with the fixed positioning member 25b.

  A knob 23a (not shown) is fixed to the cam pin 23 so that an operator can operate the knob 23a. The spring pressure of the cam pin spring 24 is set sufficiently higher than the spring pressure of the connecting lever spring 22, and when the cam pin 23 is moved to the vertical groove of the groove cam 11a, the cam pin 23 is urged downward, The connecting lever 21 is rotated counterclockwise and moved to the position indicated by the solid line. Accordingly, when the operator operates the knob 23a to release the fixing of the unit C by the movable positioning member 25a, the connecting lever 21 rotates counterclockwise and engages with the connecting pin A1, and the unit attaching / detaching cart 10 and image formation are performed. Device A is connected and cannot be pulled apart.

  As shown in FIG. 3, when the unit mounting carriage 10 is connected to the image forming apparatus A and the connecting lever 21 is engaged with the connecting pin A <b> 1, the movable positioning member 25 a is below the mounting surface 11 b of the mounting table 11. The position C does not hinder the movement of the unit C to the unit attachment / detachment carriage 10.

  When the unit C is moved from the image forming apparatus A to the unit detachable carriage 10 and one positioning groove C2 formed in the unit C is engaged with the fixed positioning member 25b, the unit C is in a fixed position (shown in FIG. 3). (The position of the two-dot chain line). At this time, when the operator operates the knob 23a upward, the cam pin 23 moves from the vertical groove to the horizontal groove and reaches the position of the end 11a2. Along with this movement, the movable positioning member 25a fixed to the cam pin 23 also moves from the lower position to the upper position of the mounting surface 11b, engages with the positioning groove C1 of the unit C, and positions the unit C. I do. Further, when the cam pin 23 is moved to the end portion 11a2 in the left-right direction, the connection lever 21 that is released from the restriction can be rotated in the clockwise direction, and the connection can be released. At this time, the operator can move the connecting lever 21 clockwise by operating the knob 21c to release the connection between the connecting lever 21 and the connecting pin A1. By releasing the connection between the connecting lever 21 and the connecting pin A1, the unit mounting carriage 10 can be separated from the image forming apparatus A.

  That is, when the unit C is fixed to the movable positioning member 25a, the cam pin 23 and the connection lever 21 can be operated, and the connection between the unit mounting carriage 10 and the image forming apparatus A can be released.

  Further, when connecting the detached unit mounting carriage 10 to the image forming apparatus A again, the operator confirms the position of the knob 21c and confirms that the connection between the connection lever 21 and the connection pin A1 is released. It is necessary to confirm.

  According to the first embodiment, when the cam pin 23 as the connection releasing means having the knob 23a is moved upward and the unit C is fixed by the movable positioning member 25a as the unit fixing means, the connecting lever 21 becomes movable. The connected state can be released.

  That is, according to the present embodiment, when the unit C is fixed, the connection between the image forming apparatus A and the unit mounting carriage 10 can be released. When the unit C is not fixed, the connecting lever 21 cannot be moved from the position where it engages with the connecting pin A1. Therefore, it is possible to prevent the unit C from being dropped due to the separation of the unit mounting carriage 10 when the unit C is not fixed.

  FIG. 4 is a flowchart for explaining the procedure for moving the unit C in the first embodiment of the unit detachable carriage 10 according to the present invention.

  In FIG. 4, the operator first connects the unit detachable carriage 10 to the image forming apparatus A. Thereafter, by operating the knob 23a to the left, the cam pin 23 is moved from the horizontal groove to the vertical groove to reach the position of the end 11a1, and the connection lever 21 is in the connection lock state shown in FIG. (Step S11). If the knob 23a is not operated to the left, the movable positioning member 25a fixed to the cam pin 23 is positioned above the mounting surface 11b of the mounting table 11, so that the unit C can be attached to the unit mounting / removing cart 10. Movement is prevented.

  Next, the unit C is moved from the image forming apparatus A to the unit attaching / detaching carriage 10 and placed at a fixed position (position indicated by a two-dot chain line in FIG. 3) on the placing table 11. Further, the operator operates the knob 23a upward, moves the cam pin 23 from the vertical groove to the horizontal groove, and engages the movable positioning member 25a with the positioning groove C1 of the unit C to position the unit C. , Fixed (step S12). Next, the operator checks whether or not the unit C is correctly positioned and fixed at the fixed position (step S13). When the unit C is not fixed at the fixed position (No at Step S13), the process returns to Step S12. When the unit C is fixed at the fixed position (Yes at Step S13), the process proceeds to Step S14. In step S14, the operator moves the knob 21c to the position indicated by the two-dot chain line in FIG. 3 with respect to the connecting lever 21 that has become movable due to the movement of the cam pin 23 toward the end 11a2. Let As a result, the connection with the connection pin A1 is released (step S14), and the unit mounting carriage 10 can be pulled away from the image forming apparatus A (step S15).

  According to the present embodiment, after confirming that the unit C is fixed on the mounting table 11 of the unit detachable carriage 10 (step S13), the connection by the connection lever 21 is released (step S14). Sometimes the unit C does not fall from the mounting table 11.

  FIG. 5 is a schematic configuration diagram for explaining the configuration and operation of the second embodiment of the unit detachable carriage 10 according to the present invention.

  The configuration and operation of the second embodiment in FIG. 5 are similar to those of the first embodiment, and the members having the same functions are denoted by the same reference numerals, so that the description thereof is omitted and different configurations are provided. Only the operation will be described.

  In FIG. 5, the first embodiment is different from the first embodiment in that the first embodiment is operated using a link mechanism and a spring. In the second embodiment, the drive is electrically performed by a motor. This is a configuration to be performed. The second embodiment is also different in that a sensor is used.

  That is, in the second embodiment, the configuration in which the connecting lever 21 engages with the connecting pin A1 is the same as in the first embodiment, but the shaft 21a is fixed to the connecting lever 21 and rotates to the mounting table 11. Held possible. Further, the shaft 21a is connected to a drive motor M1 as connection release means, and the connection lever 21 can swing between a solid line and a two-dot chain line. Furthermore, the configuration in which the movable positioning member 25a moves from the lower position to the upper position on the mounting surface 11b and engages with the positioning groove C1 of the unit C to position the unit C is the same as that of the first embodiment. Although the same, the driving is performed by the swinging arm 25. A movable positioning member 25 a is fixed to one end of the arm 25, and the swinging rotation of the arm 25 is performed by rotation of a rotating shaft 251 fixed to the other end of the arm 25. The rotating shaft 251 is rotatably held on the mounting table 11 and is connected to the driving motor M2 to rotate. The arm 25 swings and rotates between the position of the broken line and the position of the two-dot chain line shown in FIG.

  Sensors S <b> 1 and S <b> 2 are sensors that detect the movement of the connecting lever 21. The sensor S1 detects that the connecting lever 21 is in a position where it engages with the connecting pin A1 of the image forming apparatus A, and the sensor S2 detects that the connecting lever 21 is in a position where it does not engage with the connecting pin A1. . The sensors S3 and S4 are sensors that detect the position of the movable positioning member 25a. The sensor S3 detects that the movable positioning member 25a is in a position where the unit C is not positioned, and the sensor S4 detects that the movable positioning member 25a is in a position where the unit C is positioned. The sensor S5 is a sensor that detects that the unit C has reached a fixed position.

  In the present embodiment, the connecting means includes a connecting lever 21, a connecting pin A1, a drive motor M1 that can rotate forward and backward, and the connection releasing means includes a drive motor M1 that also serves as the connecting means. The unit fixing means includes a movable positioning member 25a, a fixed positioning member 25b, an arm 25, a drive motor M2 that can rotate forward and reverse.

  After the unit mounting carriage 10 is connected to the image forming apparatus A, the unit C is mounted on the unit mounting carriage 10 from the image forming apparatus A by the operator in a state where the movable positioning member 25a is in a position detected by the sensor S3. It is moved to a fixed position on the table 11. At this time, the sensor S5 detects the arrival of the unit C at the fixed position. By this detection, the drive motor M2 is driven, and the arm 25 is rotated to move the movable positioning member 25a to the unit C positioning position. The sensor S4 detects that the movable positioning member 25a has reached the positioning position. By this detection, the completion of the fixing operation of the unit C is displayed on a display unit (not shown) of the unit detachable carriage 10 and the connection can be released. At the same time, the drive motor M1 is driven, and the connection lever 21 is moved from the position where it engages with the connection pin A1 of the image forming apparatus A to a position where it does not engage. The sensor S3 detects the movement of the connecting lever 21 to a position where it is not engaged with the connecting pin A1, and the detection of the completion of the connection release is displayed on the display unit of the unit detachable carriage 10 by the detection. In this state, the unit detachable carriage 10 can be detached from the image forming apparatus A.

  That is, when the unit C is fixed to the movable positioning member 25a, the drive motor M2 and the drive motor M1 are operated, the connection between the connection lever 21 and the connection pin is released, and the unit mounting carriage 10 and the image forming apparatus A are connected. Can be released.

  FIG. 6 is a flowchart for explaining the procedure for moving the unit C in the second embodiment of the unit detachable carriage 10 according to the present invention.

  In FIG. 6, as a preparation for connection with the image forming apparatus A, the drive motors M <b> 1 and M <b> 2 are operated by operating a connection start button (not shown) of the unit attachment / detachment carriage 10, and the connection lever 21 and the arm 25 are illustrated. 5 is moved to the position of the two-dot chain line (step S21). Next, the operator connects the unit mounting carriage 10 to the image forming apparatus A. When the connection is completed, the drive motors M1 and M2 are rotationally driven in the reverse direction by detection of a sensor (not shown) that detects the completion of the connection, the connection lever 21 is moved to a position that engages with the connection pin A1, and the movable positioning member 25a is Separated from the unit C (step S22). Next, in step S23, whether or not the unit attaching / detaching cart 10 and the image forming apparatus A are correctly connected is confirmed by a display displayed on a display unit (not shown) of the unit attaching / detaching cart 10. This confirmation is performed by the sensor S1, and it is determined based on whether or not the connecting lever 21 has been correctly moved to a position where it engages with the connecting pin A1 (step S23). When not correctly connected (No at Step S23), the process returns to Step S22, and when correctly connected (Yes at Step S23), the process proceeds to Step S24.

  In step S <b> 24, the operator moves the unit C from the image forming apparatus A to a fixed position on the mounting table 11 of the unit mounting carriage 10. This movement is detected by the sensor S5, the drive motor M2 is driven, the movable positioning member 25a is rotated and moved clockwise via the arm 25, and the unit C is fixed (step S24). Next, the operator confirms whether or not the unit C is correctly fixed at a fixed position by displaying on the display unit. This display is displayed by determining whether or not the unit C is fixed at a fixed position by detecting the movement of the movable positioning member 25a by the sensor S4 (step S25). When the unit C is not fixed at the fixed position (No at Step S25), the process returns to Step S24, and when it is fixed at the fixed position (Yes at Step S25), the process proceeds to Step S26. In step S26, the drive motor M1 is driven by the detection of the sensor S4, the connecting lever 21 is moved to a position where it is not engaged with the connecting pin A1, and the completion of connection release is displayed on the operation unit 9 (step S26). . The operator confirms whether or not the completion of the connection release is displayed on the operation unit 9, and pulls the unit mounting carriage 10 away from the image forming apparatus A (step S27).

  According to the present embodiment, after confirming that the unit C is fixed on the mounting table 11 of the unit mounting carriage 10 (step S25), the connection by the connecting lever is released (step S26). The unit C does not fall from the mounting table 11.

  In the present embodiment, the unit attachment / detachment carriage 10 has functions of a connection start button, a display of completion of connection between the unit attachment / detachment carriage 10 and the image forming apparatus A, and a display of completion of fixation of the unit C. However, these functions may be provided to the operation unit 9 of the image forming apparatus A.

DESCRIPTION OF SYMBOLS 10 Unit detachable carriage 11 Mounting base 11a Groove cam 11b Mounting surface 11a1, 11a2 End 21 Connecting lever (connecting means)
21a shaft 21b, 22a pin 21c, 23a knob 22 spring for connecting lever (connecting means)
23 Cam pin (connection release means)
24 Cam pin spring (connection release means)
25 Arm (unit fixing means)
25a Movable positioning member (unit fixing means)
25b Fixed positioning member (unit fixing means)
A Image forming apparatus A1 Connecting pin (connecting means)
C unit C1, C2 positioning groove M1 drive motor (connection means, connection release means)
M2 drive motor (unit fixing means)
S1, S2, S3, S4, S5 sensors

Claims (1)

A unit detachable carriage that can be connected to the image forming apparatus, and is used to attach and detach a unit that is detachably held in the image forming apparatus.
A mounting table for mounting the unit;
Unit fixing means for fixing the unit mounted on the mounting table;
Connecting means for connecting to the image forming apparatus;
A connection release means for releasing the connection with the image forming apparatus,
The unit mounted on the mounting table is fixed by the unit fixing unit, so that the connection release unit is operated, and the connection unit can release the connection with the image forming apparatus. The unit detachable cart.

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