CN100580572C - image forming device - Google Patents

Abstract

The present invention discloses an image forming apparatus, the image forming apparatus includes an apparatus main body, a first unit installed in the apparatus main body, installed to the apparatus main body and operable in an open position for opening the apparatus main body and a closed position for closing the apparatus main body A rotatable portion rotatable between positions, and a second unit removably mounted to the rotatable portion. When the rotatable part is rotated from the closed position to the open position, the first unit is allowed to be attached to or removed from the device body by horizontally moving it. By removing the second unit from the rotatable part, the first unit can be installed or removed from the device body without contacting the second unit.

Description

image forming device

technical field

The present invention relates to an image forming apparatus including a printer, a facsimile machine, a copier, and a multifunctional machine having functions of at least two of the above machines.

Background technique

<Patent Document 1> Japanese Patent Laid-Open No. 2004-205534.

In the development of image forming apparatuses, downsizing of apparatuses is an important issue. In order to reduce the size of the device, constituent parts need to be arranged with high space efficiency and reduce excess space within the device. Patent Document 1 discloses an image forming apparatus including an outer panel of an apparatus main body designed as a rotatable door, and a unit such as a transfer unit is mounted on an inner surface of the door.

A problem with this type of image forming apparatus is that, when maintenance or replacement of an internal unit provided inside the apparatus is performed, the unit on the inner surface of the door tends to obstruct the maintenance or replacement of the internal unit.

As one of the solutions to this problem, it has been proposed to make the door unit detachable from the door so that it can be removed from the door when it interferes with maintenance and replacement work. However, if the unit is made to be easily installed and removed, the unit will be installed with lower positional accuracy. Conversely, if the unit is fixed with bolts or the like in pursuit of high accuracy, it will take a long time to install or remove the unit due to the use of tools.

Contents of the invention

In view of the aforementioned problems, the present invention aims to provide an image forming apparatus that can satisfy two contradictory needs: facilitating unit installation/removal; and securing the accuracy of its position.

According to an aspect of the present invention, there is provided an image forming apparatus including an apparatus main body, a first unit installed in the apparatus main body, installed to the apparatus main body and capable of being opened in an open position for opening the apparatus main body and for closing the apparatus main body. A rotatable portion that rotates between the closed positions of the rotatable portion is removably mounted to a second unit of the rotatable portion. When the rotatable part is rotated from the closed position to the open position, the first unit is allowed to be attached to or removed from the device body by horizontally moving it. By detaching the second unit from the rotatable part, the first unit can be installed or removed from the main body of the device without contacting the second unit. The rotatable portion includes a pawl slidably movable between an engaged position for engaging the lock portion of the second unit and a disengaged position for releasing the second unit. To engage, the pawl has a tapered portion which, during installation of the second unit, comes into contact with the lock portion thereby causing a sliding movement of the pawl from the engaged position to the disengaged position.

Preferably the rotatable part comprises a support member which supports the second unit mounted to the rotatable part in a movably adjustable manner in a direction to make said second unit towards or away from the rotatable part.

Also, preferably the rotatable portion includes a biasing member continuously applying an elastic force to the second unit in a direction to move the second unit away from the rotatable portion.

Also, preferably the second unit includes a positioning portion that comes into contact with a predetermined portion of the device main body due to the elastic force of the biasing member.

Also, preferably, when the rotatable portion is rotated from the open position to the closed position, the positioning portion is pressed by the biasing member to a predetermined portion of the device main body so that the second unit is positioned.

Moreover, the pawl is preferentially continuously pressed by a force moving the pawl towards the engaged position, so that the pawl returns to the engaged position when the lock moves over the taper during attachment of the second unit.

Also, preferably the second unit includes registration rollers for registering the sheets.

Furthermore, preferably, a handle is provided at each longitudinal end of the second unit, and the second unit can be detached from the rotatable part by operating the handle.

Also, the first unit is preferably attached to or removed from the apparatus main body without contacting the registration roller of the second unit by detaching the second unit from the rotatable portion.

Also, preferably the second unit is a transport unit including a pair of registration rollers and a transport member and transports the paper fed from the paper feed section to the image transfer section.

Also, preferably, the paper feeding portion includes a conveying roller for conveying the paper and a separating member for separating the stuck paper, and the paper clamping force of the pair of registration rollers is greater than that between the conveying roller and the separating member. force.

Also, preferably, the fixing unit includes a pair of fixing rollers disposed downstream of the pair of registration rollers in the paper conveying direction, and the fixing rollers have a paper-nipping force smaller than that of the registration rollers.

Also, preferably the first unit includes at least one intermediate transfer belt.

According to the embodiments of the present invention, since the second unit is detachable from the rotatable portion, maintenance of components inside the device main body can be easily performed. Also, since the direction in which the removed unit is moved and the installation/removal direction are the same, maintenance work is facilitated.

Embodiments of the present invention make it possible to easily remove the second unit and install the second unit with high positioning accuracy. If the second unit includes a transfer unit, paper jams can be easily resolved.

Description of drawings

1 is a side sectional view schematically illustrating an image forming apparatus according to an embodiment of the present invention;

2 is a side sectional view schematically illustrating when the front cover of the image forming apparatus in FIG. 1 is opened;

3 is a side sectional view schematically illustrating the image forming apparatus in FIG. 1 when the front cover is opened to remove the transfer unit;

4 is a perspective view illustrating the image forming apparatus in FIG. 1 having the front cover from which the transfer unit has been detached;

5 is a perspective view illustrating a first step in the procedure of mounting the transfer unit to the front cover;

FIG. 6 is a perspective view illustrating a second step in the procedure of mounting the transfer unit to the front cover;

7 is a perspective view illustrating that the transfer unit has been mounted to the front cover;

8 is an enlarged perspective view illustrating a portion of the transfer unit for engagement with the front cover; and

9 is a side sectional view schematically illustrating an image forming apparatus according to another embodiment of the present invention;

Detailed ways

Preferred embodiments of the present invention are described below with reference to the accompanying drawings.

FIG. 1 is a side sectional view schematically illustrating an image forming apparatus according to an embodiment of the present invention.

Referring to FIG. 1 , the image forming apparatus in this embodiment is a tandem color image forming apparatus, including an imaging section 2 located at the center of the apparatus main body 1 , and below the imaging section 2 there is a feeder for forming an image in the imaging section 2. Paper feed section 20 for paper on it.

The image forming section 2 includes drum-type photoreceptors 3a, 3b, 3c, and 3d (hereinafter also referred to as photoreceptors 3) as image carriers, on which toner images are formed in different colors. In the example, a yellow toner image, a magenta toner image, a cyan toner image, and a black toner image are formed on the surfaces of the photoreceptors 3a, 3b, 3c, and 3d, respectively. The photoreceptors 3a to 3d are arranged in parallel with each other at a predetermined pitch. An intermediate transfer belt 4 as a first unit is disposed below the photoreceptors 3 a to 3 d so as to face it. In an example, the intermediate transfer belt 4 is an endless belt that is wound around support rollers 5 and 6 and rotates in the direction indicated by the arrow in FIG. 1 .

Near the photoreceptor 3 is provided a charging unit 7 for charging the surface of the photoreceptor 3, and a light scanning unit (LSU) 8 that emits a laser beam to the surface of the photoreceptor 3 according to image information, so that the laser beam formed on the surface of the photoreceptor 3 A developing unit 9 for electrostatic latent image development, a transfer unit 10 facing the photoreceptor 3 through the intermediate transfer belt 4, for cleaning and collecting the photoreceptor 3 after transferring the toner image to the intermediate transfer belt 4 Cleaning unit 11 of residual toner on the surface.

When the image forming apparatus starts an image forming process, the photoreceptor 3 rotates clockwise as shown in FIG. 1 , and the charging unit 7 charges the surface of the photoreceptor 3 with a predetermined electrode. Then, the light scanning unit 8 irradiates the charged surface with a laser beam according to the image information, thereby forming an electrostatic latent image on the surface of the photoreceptor 3 . The electrostatic latent image formed on the surface of the photoreceptor 3 is developed into a toner image by the developing unit 9 , and the toner image is transferred onto the intermediate transfer belt 4 by the transfer unit 10 .

To form a color image, each photoreceptor 3 is subjected to the above-mentioned image forming operation. The yellow toner image, magenta toner image, cyan toner image, and black toner image respectively formed on the photoreceptors 3 a , 3 b , 3 c , and 3 d are sequentially transferred onto the intermediate transfer belt 4 . In this image forming apparatus, the secondary transfer roller 12 is placed facing the backup roller 6 with the intermediate transfer belt 4 sandwiched therebetween.

The paper feed section 20 located below the image forming section 2 is provided with a paper feed tray 21 as a paper container in which sheets S are stacked, including conveying paper, resin films, etc. A paper feed roller 22 , a friction pad 23 as a separation member for separating sheets stuck together among the sheets S, and a return path 24 for double-sided image formation. Note that a torque limiting type reverse roller can be used as the separating member.

The sheet S fed from the sheet feeding section 20 is conveyed toward the pair of registration rollers 13 until the leading edge of the sheet S comes into contact with the pair of registration rollers 13 suspended, by which the sheet S is aligned. Thereafter, the pair of registration rollers 13 rotates again to convey the paper S upward to the secondary transfer section, where the secondary transfer rollers 12 are provided, at such a timing that the paper S is in contact with the intermediate transfer belt in the secondary transfer section. 4. The color toner images formed on the alignment.

After the toner image is transferred onto the sheet S in the secondary transfer section, the sheet S is conveyed to a fixing unit 14 having a fixing roller pair 14a. After the fixing unit 14 fixes the toner image on the sheet S, the sheet S is ejected onto the stacker 16 on the top of the apparatus main body 1 . The toner remaining on the surface of the intermediate transfer belt 4 after the transfer of the toner image is removed by the belt cleaner 15 .

The image forming apparatus is provided with an operation section (not shown) including an operation panel and the like in an upper right part as viewed in FIG. 1 . That is, the front side of the image forming apparatus is shown on the right side in FIG. 1 . The front outer panel of the device main body 1 , that is, the front cover 30 serves as a rotatable portion rotatable around a support point 31 between a closed position shown in FIG. 1 and an open position shown in FIG. 2 . A unit including a plurality of constituent parts is attached to the front cover 30 . In this embodiment, this unit is a transport unit 40 (second unit) that includes the registration roller pair 13 and that transports the sheet S fed from the sheet feed section 20 to the secondary transfer section. This transport unit 40 includes a secondary transfer roller 12, a guide plate 25 (not shown) at one end of the return path 24, and the like in addition to the registration roller pair 13.

When performing maintenance and replacement of the intermediate transfer belt 4 of the image forming apparatus having the above configuration, the front cover 30 is opened. Then, because the length of the intermediate transfer belt 4 in the front-rear direction, that is, the depth direction is large, the intermediate transfer belt 4 can be detached at least by sliding in the horizontal direction indicated by arrow A in FIG. 2 . However, if the transfer unit 40 is pulled out of the apparatus main body 1 by sliding in the direction indicated by arrow A in FIG. 2 , the intermediate transfer belt 4 comes into contact with the registration roller pair 13 as shown in FIG. 3 . This contact damages the intermediate transfer belt 4, resulting in image distortion. Sometimes, this contact damages the registration roller pair 13, causing problems such as damage to the sheet S and distortion of an image portion corresponding to the damaged portion of the registration roller pair 13.

In the embodiment of the present invention, in order to avoid these problems, the transfer unit 40 which interferes with the removal of the intermediate transfer belt 4 is detachably attached to the front cover 30 . When performing maintenance or replacing the intermediate transfer belt 4 , the transfer unit 40 can be removed from the front cover 30 to prevent the intermediate transfer belt 4 from contacting the registration roller pair 13 .

Although it is preferable to make the transfer unit 40 easily detachable from the front cover 30, if the transfer unit 40 is reinstalled with low positional accuracy, transfer problems such as paper jams or skew may occur. Therefore, a balance between operability and positional accuracy is required.

To meet this requirement, in the embodiment of the present invention, the following structures are used to facilitate the replacement and removal of the transfer unit 40 and ensure its position accuracy.

FIG. 4 is a perspective view illustrating the image forming apparatus with the transfer unit 40 detached from the front cover 30. As shown in FIG. 5 to 7 are perspective views illustrating a procedure of mounting the transfer unit 40 to the front cover 30 .

Referring to FIG. 4 , the supporting point 31 of the front cover 30 is located at the lower front side (see FIG. 1 ). When the engagement of the locking pawl 37 is disengaged by using an operation portion (not shown), the upper portion of the front cover 30 is lowered forward to the open position to fully expose the paper path between the paper feeding portion 20 and the fixing unit 14 . When the transfer unit 40 is detached from the opened front cover 30, as shown in FIG. 4, the return path 24 for duplex printing is exposed, so that the guide plate 26 at the other end of the return path 24 is revealed. Since the transfer unit 40 has been removed from the front cover 30, the intermediate transfer belt 4 and the waste toner box 17 can be easily removed by sliding them in the direction indicated by arrow A (see FIG. 2).

The transfer unit 40 includes a belt handle 41 of a certain width on each longitudinal end thereof. Referring to FIG. 8 , the transfer unit 40 also includes an insertion tab 42 at each end thereof, an engaging tab 43 for securing the transfer unit 40, and an upward biasing member (described below) for receiving biasing member (described below) applied when disengaging. An elongated receiving plate 44 for thrust. On the other hand, the front cover 30 includes at each end an angular notch 32 for inserting a protrusion 42 for engaging the locking member of the transfer unit 40 through an engagement piece 43, and continuously in the direction away from the front cover 30. A biasing member that applies elastic force to the transfer unit 40 .

The handle 41 is located at an opposite end of the upper portion of the transfer unit 40 so that the handle 41 can be easily seen when the front cover 30 is in the open position. Also, each handle 41 is bent forward from the upper side toward the lower side so as to allow the user to place his thumb on the upper front surface of the handle and other fingers on the lower rear surface so that the handle 41 can be easily grasped. This structure improves the operability of the transfer unit 40 .

When the front cover 30 is in the open position, the protrusions 42 are located at opposite ends in the longitudinal direction of the lower front side (lower left side in FIG. 8 ) of the transfer unit 40 . The protrusion 42 is formed like an elongated plate bent into a U shape. Each angular notch 32 for insertion of a corresponding protrusion 42 has a rectangular shape in cross section. The protruding portion 42 has no gap at all in the width direction after fitting into the angular recess 32, but is loose in the vertical direction. Thus, the transfer unit 40 with the protrusion 42 inserted into the angular notch 32 cannot move laterally, but can rotate around the protrusion 42 at an angle.

The locking member of the front cover 30 includes a locking pawl 33 that engages the engaging piece 43 . The locking pawl 33 is mounted so as to be slidable in the directions of arrows B and C in FIG. 5 and pressed in the B direction by the force of a spring (not shown) to engage with the engagement piece 43 . The pawl 33 is normally held in the engaged position. The pawl 33 includes a tapered portion 33a at its upper portion so that the pawl 33 slides in the direction of arrow C against the spring force releasing the engagement of the pawl 33 when pushed by the edge of the engaging piece 43 . A release lever 34 (see FIG. 6 ) is connected to the pawl 33 . By moving the lock claw 33 in the direction of arrow C using the release lever 34, the lock claw 33 is disengaged from the engagement piece 43, and the engagement is thereby released.

A biasing member that applies elastic force to the transfer unit 40 in a direction away from the front cover 30 includes a lifting block 36 . The lifting block 36 is structured such that it can move vertically under the guidance of the storage box 35 and has an upper portion in an angular cross-section. The lifting block 36 is continuously subjected to an elastic force exerted by a lifting spring (not shown) along the direction upward in FIG.

When performing maintenance or replacement of the intermediate transfer belt 4 of the image forming apparatus having the above structure, the front cover 30 is opened as shown in FIG. 2 , and the intermediate transfer belt 4 can be removed by sliding horizontally. However, since the transfer unit 40 installed to the front cover 30 blocks disassembly, the transfer unit 40 needs to be detached from the front cover 30 .

To detach the transfer unit 40 from the opened front cover 30 , the release lever 34 is moved in the direction of the arrow C, so that the locking pawl 33 is also moved in the direction of the arrow C and disengaged from the engaging piece 43 . Then, the user pulls the transfer unit 40 forward with the handle 41 to pull the protrusion 42 out of the angular notch 32 , whereby the transfer unit 40 can be easily detached from the front cover 30 .

According to this embodiment, the transfer unit 40 can be detached from the front cover 30 by simply pulling the release lever 34 and then pulling the transfer unit 40 forward with the handle 41 . Also, the present embodiment eliminates combined operations such as pulling the release lever 34 while pulling the transfer unit 40 . Once the transport unit 40 is detached, it can be detached from the apparatus main body 1 by moving the intermediate transfer belt 4 horizontally.

When attaching the removed transfer unit 40 to the front cover 30, the transfer unit 40 needs to be installed with high positional accuracy relative to the intermediate transfer belt 4 in the apparatus main body 1 for driving the registration roller pair 13 The gear, and the transmission roller are around it. In the present embodiment, as described below, the detached transmission unit 40 can be moved relatively relatively to the apparatus main body 1 by a simple operation of first roughly positioning and engaging the detached transmission unit 40 with respect to the front cover 30 . High positional accuracy reinstallation.

More specifically, the user first holds the two handles 41 of the transfer unit 40 with both hands as shown in FIG. After this insertion operation, the user presses the rear end of the transfer unit 40 against the front cover 30 so that each engaging piece 43 of the rear end of the transfer unit 40 comes into contact with the tapered portion 33 a of the locking pawl 33 . As a result, the pawl 33 moves in the direction of the arrow C against the action of the spring. When the engaging piece 43 moves over the locking claw 33 , as shown in FIG. 7 , due to the spring force, the locking claw 33 moves in the direction of arrow B and engages with the engaging piece 43 .

In this state, the transfer unit 40 is not accurately positioned relative to the front cover 30, and is fixed in a movable manner for adjustment. More specifically, the transfer unit 40 engaged with the front cover 30 by the locking member is fixed and movable in a direction toward or away from the front cover 30 . Also, the transfer unit 40 engaged with the front cover 30 is continuously biased in a direction away from the front cover 30 by the elastic force of the biasing member.

When the front cover 30 engaged with the transmission unit 40 is rotated from the open position to the closed position, the protrusion 45 provided as a positioning portion on the transmission unit 40 abuts against a predetermined fixed position (not shown) on the main body frame of the device main body 1. out), so that the transfer unit 40 is accurately positioned relative to the device main body 1.

According to this embodiment of the present invention, the transfer unit 40 can be mounted to the front cover 30 by a simple operation of inserting the protrusion 42 of the front side into the angular recess 32 using the handle 41 and pushing down the rear side of the transfer unit 40 . Then, by rotating the front cover 30 from the open position to the closed position, the transfer unit 40 is accurately positioned relative to the device main body 1 .

As described above, the transport unit 40 needs to be accurately positioned with respect to the intermediate transfer belt 4 , the gears driving the registration roller pair 13 , and the surrounding transport rollers. These components are fixed on the main body frame of the device main body 1 . Therefore, when the front cover 30 is rotated to the closed position, the transfer unit 40 needs to be accurately positioned relative to the main body frame of the device main body 1 . If the transfer unit 40 is immovably fixed to the front cover 30 when the transfer unit 40 is engaged with the front cover 30, since the position of the transfer unit 40 cannot be adjusted, the transfer unit 40 is placed with poor positional accuracy relative to the apparatus main body 1 .

According to the present embodiment, when engaged with the front cover 30, the transfer unit 40 is loosely fixed to the front cover 30 to allow position adjustment. When the front cover 30 is rotated to the closed position, the protrusion 45 of the transfer unit 40 abuts against a predetermined position on the main body frame due to the elastic force of the biasing member, so that the transfer unit 40 is accurately positioned relative to the device main body 1 .

If the transfer unit 40 is movable within a large range relative to the front cover 30, the transfer unit 40 may hit the peripheral portion of the device main body 1 when the front cover 30 is rotated to the closed position. As a result, the front cover 30 cannot be placed to the closed position, or the transfer unit 40 may be damaged. In consideration of these problems, according to the present embodiment, the transfer unit 40 is loosely fixed to the front cover 30 through the support member.

The conveyance unit 40 in this embodiment includes a secondary transfer roller 12 for transferring an image onto a sheet S, a pair of registration rollers 13 , and a conveyance guide around them as integral members. This structure improves the efficiency of clearing paper jams. More specifically, since the transfer roll can be exposed by opening the front cover 30, jammed paper can be easily seen and cleared. Also, the pair of registration rollers 13 is disposed in the transfer unit 40 in such a manner that the two rollers are pressed against each other. With this structure, since the jammed paper in the conveying unit 40 remains on the front cover 30 together with the conveying unit 40 instead of falling into the device, the jammed paper is easily cleared. Also, since the conveying guides around it are integrally formed with the conveying unit 40, the visibility of jammed paper and the cleaning efficiency are further improved. Providing the secondary transfer roller 12 , the pair of registration rollers 13 , and the conveyance guide as an integral body makes it possible to accurately configure the conveyance guide for guiding the paper from the registration process, thereby improving the accuracy of paper conveyance. Paper is expected to be conveyed accurately, especially in the transfer section where the image is transferred to the paper. Therefore, arranging the rollers and guides in an accurate positional relationship is an important factor for the image forming apparatus.

The registration roller pair 13 is driven by the driving force transferred by the main body driving force transfer member. When the front cover 30 , which is rotatable between a closed position and an open position relative to the apparatus main body 1 , is in the open position, the transfer of driving force to the registration roller pair 13 is stopped, so jammed paper can be easily cleared. The force holding the paper between the paper feed roller 22 and the friction pad 23 is smaller than the force holding the paper between the registration roller pair 13 . With this structure, when the front cover 30 is opened, paper jammed between the paper feed roller 22, the friction pad 23, and the pair of registration rollers 13 remains in the transport unit 40, and thus is easily cleaned. The force holding the paper between the fixing roller pair 14 a is smaller than the force holding the paper between the registration roller pair 13 . With this structure, when the conveying unit 40 is exposed by opening the front cover 30, the paper stuck between the fixing roller pair 14a and the registration roller pair 13 is released from between the registration roller pair 13, and thus is easily removed. clean up.

The present invention is applicable to the image forming apparatus shown in FIG. 9, which is constructed so that not only the portion in front of the fixing unit 14 but also the eject roller 18 is exposed when the front cover 30 as a rotating member is in the open position. That is, the present invention is applicable to an image forming apparatus whose front cover 30 has a height extending completely from the lowest point to the highest point of the apparatus main body 1 . However, the image forming apparatus may be configured such that the fixing unit 14 is not exposed even when the front cover 30 is in the open position.

This application is based on Japanese Priority Application No. 2006-162350 filed on June 12, 2006, Japanese Priority Application No. 2007-102551 filed on April 10, 2007, and Japanese Priority Application No. 2007-102551 filed on April 24, 2007 Japanese Priority Application Document No. 2007-114172, Japan Patent Office, the entire contents of which are hereby incorporated by reference.

Claims (13)

1. image processing system comprises:

Apparatus main body;

First module, described first module are installed in the described apparatus main body;

Rotatable portion, described rotatable portion is mounted to described apparatus main body, and can rotate between open position and off-position, and described open position is used to open described apparatus main body, and described off-position is used to close described apparatus main body;

Unit second, described Unit second is mounted to described rotatable portion in removable mode;

It is characterized in that, when described rotatable when off-position rotates to open position, by moving horizontally described first module, allow described first module to be mounted to described apparatus main body or be removed from described apparatus main body; And

By described Unit second is removed from described rotatable, described first module can be mounted to described apparatus main body or be removed and can not contact with described Unit second from described apparatus main body.

Described rotatable portion comprises the lock pawl, this lock pawl moves between bonding station and disengaging configuration slidably, described bonding station is used to engage the lock section of described Unit second, described disengaging configuration is used to discharge described joint, the lock pawl has tapered portion, in the described second unit installation process, described tapered portion contacts with described lock section, thereby causes that the slip of described lock pawl from the bonding station to the disengaging configuration move.

2. image processing system as claimed in claim 1, it is characterized in that, described rotatable portion comprises supporting member, this supporting member make described Unit second towards with away from the direction of described rotatable portion on support the described Unit second that is installed to described rotatable portion in the mode of removable adjustment.

3. image processing system as claimed in claim 2 is characterized in that, described rotatable portion comprises biasing member, and described biasing member makes described Unit second apply elastic force to described Unit second on away from the direction of described rotatable portion.

4. image processing system as claimed in claim 3 is characterized in that, described Unit second comprises the location division, and described location division begins to contact with the predetermined portions of described apparatus main body owing to the elastic force of described biasing member.

5. image processing system as claimed in claim 4, it is characterized in that, when described rotatable when open position rotates to off-position, described location division is pressed against the predetermined portions of described apparatus main body by described biasing member, so that described Unit second is positioned.

6. image processing system as claimed in claim 1, it is characterized in that, described lock pawl is subjected to making the biasing constantly of the power that described lock pawl moves to bonding station, thereby in the installation process of described Unit second, move when crossing described tapered portion when described lock section, described lock pawl is back to bonding station.

7. image processing system as claimed in claim 1 is characterized in that, described Unit second comprises the alignment rolls that is used for the paper registration.

8. image processing system as claimed in claim 1 is characterized in that, on each vertical end of described Unit second handle is set, and described handle is operated to described Unit second is removed from described rotatable.

9. image processing system as claimed in claim 7, it is characterized in that, by described Unit second is removed from described rotatable, described first module is mounted to described apparatus main body or removes and can not contact with the alignment rolls of described Unit second from apparatus main body.

10. image processing system as claimed in claim 1, it is characterized in that, described Unit second is a delivery unit, and described delivery unit comprises a pair of alignment rolls and transfer member, and described delivery unit will be sent to the image transfer section branch from the paper of paper feed-in part feed-in.

11. image processing system as claimed in claim 10, it is characterized in that, described paper feeding portion branch comprises transfer roller and the separating member that is used to transmit paper, described separating member separates paper together adhered to one another, and the paper holding force of wherein said a pair of alignment rolls is greater than the paper holding force between described transfer roller and the described separating member.

12. image processing system as claimed in claim 10, it is characterized in that, comprise that the fixation unit of a pair of fixing roller is set at the downstream of the described a pair of alignment rolls on the paper conveyance direction, the paper holding force of wherein said a pair of fixing roller is less than the paper holding force of described a pair of alignment rolls.

13. image processing system as claimed in claim 1 is characterized in that, described first module comprises intermediate transfer belt at least.

Images