JP2000066472A - Image forming device and copying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the ejection and removal of heat and ozone generated from an image forming device and to widely uncover a carrying face for a transfer material, thereby facilitating maintenance. SOLUTION: A photoreceptive drum 10 and a fixing device 17 are arranged in a device main body, one near left side-end and the other near right side-end, and a part above a toner-image receiving body 14a and a carrying part 160, which are between them, is made to be an empty space S having a concave surface. A transfer face and the carrying face for the transfer material can be uncovered by opening a lid member 300 provided in the empty space S. Also, the photoreceptor drum 10 and fixing device 17 are respectively accommodated in a cartridge 100 or 170 and can be pulled out toward the empty space S.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotography in which a charging means, an image exposing means and a developing means are arranged around an image forming body to transfer and fix a toner image formed on the image forming body onto a transfer material. The present invention relates to an image forming apparatus and a copying apparatus of a system.

[0002]

2. Description of the Related Art In an electrophotographic image forming apparatus or a copying apparatus, the photosensitive characteristics of an image forming body are deteriorated due to the influence of heat emitted from a fixing device, and the shape of an image forming apparatus is changed in an apparatus using an intermediate transfer body. For the purpose of preventing changes in electrical characteristics, etc., and eliminating ozone generated by the discharge of the charger and transfer device, a forced exhaust action is required, and for that purpose a fan, ventilation duct, etc. Is provided.

[0003]

However, since equipment used especially for office work is required to be compact, installation of a powerful fan or a duct for ventilation is difficult in terms of space, and installation was possible. However, it is not preferable from the viewpoint of maintenance because there are many cases where the obstacle becomes an obstacle when the inside of the apparatus is opened.

[0004] The present invention has solved and improved the above points,
A space is provided by installing the image forming body and the fixing means at a distance, and heat and ozone are discharged and removed by convection using this space, and the image forming body and the fixing means can be attached and detached. It is an object of the present invention to provide an image forming apparatus and a copying apparatus.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide an image forming apparatus comprising: an image forming body; a transfer means for transferring a transfer material on which the toner image on the image forming body has been transferred; An image forming apparatus, wherein the image forming body and the fixing unit are respectively disposed on both side ends of an apparatus main body, and a concave portion is provided between the image forming body and the fixing unit. Invention), and an image forming apparatus, wherein an image forming body, and an intermediate transfer unit and a fixing unit that can transfer a toner image on the image forming body and that convey a transfer material are disposed in a substantially horizontal direction. The image forming apparatus according to claim 7, wherein the image forming body and the fixing unit are respectively disposed on both side ends of the apparatus main body, and a concave portion is formed so as to face the conveyance surface of the intermediate transfer unit. , And scanning to scan the original image In a copying apparatus including a removing unit and a printer unit that forms a toner image and transfers and fixes the toner image to a transfer material based on image information from the reading unit, the reading unit moves to an upper part of the printer unit. The printer unit is provided so that the image forming body and the fixing unit are disposed on both side ends of the apparatus main body, and a concave portion having a lid is formed in an intermediate portion. The movement of the reading unit and the opening of the concave portion are performed. And a reading unit for reading a document image, and a toner image based on image information from the reading unit. Forming and copying to transfer material
In a copying apparatus including a printer unit for performing fixing, the reading unit is fixed at an upper portion of the printer unit, and the printer unit includes an image forming body and a fixing unit disposed at both ends of the apparatus main body, and an intermediate unit. Wherein the conveyed surface of the transfer material is opened by opening the recessed portion (the invention according to claim 11).
Achieved by

[0006]

Embodiments of the present invention will be described below. The description of the present application does not limit the technical scope of the claims and the meaning of terms. Also, the following assertive description in the embodiment of the present invention indicates the best mode, and does not limit the meaning of the terms of the present invention or the technical scope.

In the following description of the embodiment, when a toner image is transferred to a transfer material, the surface of the transfer material facing the image forming body is the front surface, and the other surface of the transfer material, that is, the intermediate surface The surface of the transfer material facing the transfer body is called a back surface, an image transferred to the front surface of the transfer material is called a front image, and an image transferred to the back surface of the transfer material is called a back image.

An image forming process and each mechanism of an embodiment of the image forming apparatus according to the present invention will be described with reference to FIGS. FIG. 1 is a sectional view showing an embodiment of an image forming apparatus according to the present invention, and FIG.
FIG. 3 is a side cross-sectional view of the image forming body of FIG. 3, and FIG. 3 is a diagram showing a state of forming toner images on both sides of the image forming apparatus according to the present invention, and FIG. FIG. 3 is a diagram for forming a back surface image by transferring
FIG. 3B is a diagram illustrating the formation of a front surface image on the image forming body in synchronization with the back surface image on the intermediate transfer body, and FIG. 3C is a diagram illustrating the formation of a double-sided image on a transfer material; FIG. 4 is a diagram illustrating a positional relationship between a rotating roller provided at a position facing the first transfer unit and the second transfer unit and a rotating roller provided at a transfer material separating position from the intermediate transfer member. .

In FIG. 1, reference numeral 10 denotes a photosensitive drum as an image forming body, 11 denotes a scorotron charger as charging means,
Reference numeral 12 denotes a laser optical system as an image writing unit, 13 denotes a developing unit as a developing unit, 14a denotes a toner image receiver as an intermediate transfer unit, 14c denotes a transfer unit as a first transfer unit, and 14g denotes a second transfer unit. A backside transfer unit as a transfer unit, a paper charger 150 as a transfer material charging unit, a paper separation AC neutralizer 14h as a transfer material separation unit, a transport unit 160 having a spur 162,
A fixing device 17 is a fixing unit.

A photosensitive drum 10 as an image forming body is formed by forming a photosensitive layer such as a conductive layer, an a-Si layer or an organic photosensitive layer (OPC) on the outer periphery of a cylindrical substrate. It is rotated clockwise as shown by the arrow in FIG.

The photosensitive drum 10, as shown in FIG.
Flange members 10a and 1 at both ends for engaging and fixing it
A gear G integrated with the flange member 10b is rotatably supported by bearings B1 and B2 fitted into the drum body 30 and supported by a drum shaft 30 erected and fixed to the apparatus main body. The gear is driven in mesh with the gear to rotate at a constant speed in a predetermined direction.

In the present embodiment, a scorotron charger 11 as a charging unit, a laser optical system 12 as an image writing unit, and a developing unit 13 as a developing unit are provided as a set for an image forming process. Are arranged in order with respect to the rotation direction of the photosensitive drum 10 indicated by the arrow.

Scorotron charger 11 as charging means
Has a control grid maintained at a predetermined potential and a discharge electrode 11a formed of, for example, a sawtooth electrode, is mounted to face the photosensitive layer of the photosensitive drum 10, and has a charging action by corona discharge having the same polarity as the toner. (In this embodiment, negative charging), and a uniform potential is applied to the photosensitive drum 10. As the discharge electrode 11a, a wire electrode or a needle electrode may be used.

The laser optical system 12, which is an image writing means,
The exposure position on the photoconductor drum 10 is arranged above the photoconductor drum 10 such that the exposure position is located on the downstream side in the rotation direction of the photoconductor drum 10 with respect to the scorotron charger 11.

The laser optical system 12 is a scanning exposure optical system composed of a polygon mirror 121, an Fθ lens 122, and a plurality of mirrors 123 directly connected to a motor. Then, the photosensitive drum 10 is disposed above the photosensitive drum 10.

The developing device 13 as a developing means keeps a predetermined gap with respect to the peripheral surface of the photosensitive drum 10 and
A developing sleeve 131 made of a non-magnetic stainless steel or aluminum material having an outer diameter of 15 to 25 mm and rotating in a forward direction with respect to a rotation direction of 0, and a developing casing 138. Contains the agent.
Each developing unit 13 is kept in a non-contact state with a predetermined gap from the photosensitive drum 10 by an abutting roller (not shown). By applying a developing bias to the developing sleeve 131, the developing unit 13 is brought into contact or non-contact state. Reverse development of
A toner image is formed on the photosensitive drum 10.

The toner image receiving member 14a, which is an intermediate transfer member, is an endless belt having a volume resistivity of 10 ¹² to 10 ¹⁵ Ω · cm, for example, modified polyimide, thermosetting polyimide, ethylene tetrafluoroethylene copolymer, polyvinylidene fluoride. A 0.1 to 1.0 mm thick semiconductive film substrate in which a conductive material is dispersed in an engineering plastic such as nylon alloy is coated with a fluorine coating preferably having a thickness of 5 to 50 μm as a toner filming preventing layer. This is a seamless belt having a two-layer structure. In addition to the above, as the base of the belt, a conductive material dispersed in silicon rubber or urethane rubber or the like having a thickness of 0.5 to 2.0
mm semi-conductive rubber belts can also be used. The toner image receiver 14a is stretched while being in contact with a driving roller 14d, a supporting roller 14j, a driven roller 14e, and a tension roller 14i, and is rotated in a counterclockwise direction indicated by an arrow in FIG. A driven roller 14e, a supporting roller 14j, a driving roller 14d,
The driven roller 1 is provided in the order of the tension roller 14i.
4e, the supporting roller 14j and the driving roller 14d are fixedly rotated, and the tension roller 14i is
It can move during rotation by the elasticity of 4a. As described later, the driving roller 14d, the supporting roller 14j, and the driven roller 14e are electrically conductive rotating rollers that are both grounded.
A driven roller 14e faces a paper charger 150 serving as a transfer material charging unit via a toner image receiver 14a serving as an intermediate transfer body, and a support roller 14j faces a back transfer unit 14g serving as a second transfer unit. A driving roller 14d is provided to face a paper separating AC static eliminator 14h as a transfer material separating unit. The drive roller 14d is rotated by a drive motor (not shown), and the toner image receiver 14a is driven and rotated. The rotation of the toner image receiving member 14a causes the support roller 1 to rotate.
4j, the driven roller 14e and the tension roller 14i are driven and rotated. Belt slack of the rotating toner image receiver 14a is tensioned by the tension roller 14i.

A transfer unit 14c, which is a first transfer means, is provided opposite to the photosensitive drum 10 with the toner image receiver 14a interposed therebetween.
The transfer area 14b is formed between the steps. A DC voltage having a polarity opposite to that of the toner (positive polarity in the present embodiment) is applied to the transfer device 14c, and a transfer electric field is formed in the transfer area 14b, so that the toner image on the photosensitive drum 10 is transferred to the toner image receiving member. The image is transferred onto the recording paper P as a transfer material on the recording paper P.

A backside transfer unit 14g as a second transfer means is provided opposite to a support roller 14j which is a conductive rotating roller grounded with the toner image receiving member 14a interposed therebetween, and has a polarity opposite to that of the toner (ie, a reverse polarity). A DC voltage having a positive polarity (in the embodiment, positive polarity) is applied, and the toner image on the toner image receiver 14a is transferred to the back surface of the recording paper P.

A paper charger 150 as a transfer material charging means is driven by a driven roller 14 grounded with a toner image receiving member 14a interposed therebetween.
The recording paper P is provided to face the recording paper P and is attracted to the toner image receiver 14a.

Paper separation AC neutralizer 1 as transfer material separating means
4h is a fixing device 1 for the toner image receiver 14a as required.
An AC voltage on which a DC voltage having the same polarity or opposite polarity as that of the toner is superimposed is provided at the end on the 7 side opposite to a driving roller 14d which is a conductive rotating roller that is grounded with the toner image receiver 14a interposed therebetween. The charge is applied to the recording paper P conveyed by the toner image receiver 14a to eliminate the charge.

The transport section 160 is provided between the toner image receiver 14a and the fixing device 17, and a spur 162 is provided on the upper surface of the transport section 160. The spur 162 scoops up the recording paper P that is to be bent and conveyed toward the toner image receiving body 14a when the recording paper P is separated from the toner image receiving body 14a, and the recording paper P having a toner image on the back surface. Is transported to the fixing device 17 while preventing the rear toner image from being disturbed.

The fixing device 17 as a fixing means is composed of two rollers, a fixing roller 17a having a heater therein and a pressure roller 17b, and heat and pressure are applied between the fixing roller 17a and the pressure roller 17b. The addition fixes the toner image on the recording paper P.

Next, the image forming process will be described.

When the image recording is started, the photosensitive drum driving motor (not shown) is started to rotate the photosensitive drum 10 clockwise as shown by the arrow in FIG. 1, and at the same time, the potential of the photosensitive drum 10 is charged by the charging action of the scorotron charger 11. Is started.

An electric signal corresponding to image data is input to the laser optical system 12 in parallel with the application of the potential to the photosensitive drum 10, and a laser beam from a laser generator (not shown) is reflected by the rotating polygon mirror 121. The photosensitive drum 10 is exposed by performing main scanning in the circumferential direction of the drum and in the axial direction of the drum, and an electrostatic latent image is formed on the circumferential surface of the drum by the sub-scanning accompanying the rotation of the photosensitive drum 10.

The latent image is reversely developed by the developing unit 13 to form a toner image on the photosensitive drum 10.

The toner image serving as the back surface image formed on the photosensitive drum 10 as the image forming body by the above-described image forming process is subjected to intermediate transfer in the transfer area 14b by the transfer device 14c as the first transfer means. The toner image is transferred collectively onto the toner image receiving body 14a (FIG. 3A).

After the toner remaining on the peripheral surface of the photosensitive drum 10 after the transfer is removed by the photosensitive drum AC static eliminator 16, the toner is transferred to a cleaning device 19 as a photosensitive drum cleaning unit. The toner is cleaned by a cleaning blade 19a made of a rubber material in contact with the toner, and collected by a screw 19b in a toner discharge container (not shown).

After the toner image serving as the back surface image is formed on the photosensitive drum 10 as described above, the toner image serving as the front surface image is formed in the same manner as the above-described image forming process (FIG. 3 ( B)). At this time, the photosensitive drum 10
The image data is changed such that the front surface image formed thereon is a mirror image of the rear surface image formed on the photosensitive drum 10.

With the formation of a surface image on the photosensitive drum 10, recording paper P as a transfer material is sent out from a paper feed cassette 15 as a transfer material storage means by a feed roller 15a, and is used as a transfer material feeding means. Timing roller 1
The toner image of the front surface image carried on the photosensitive drum 10 is synchronized with the toner image of the rear surface image carried on the toner image receiving member 14a by driving the timing roller 15b. The sheet is fed to the transfer area 14b. At this time, the recording paper P is charged to the same polarity as the toner by the paper charger 150 which is brought into contact with the recording paper P and to which a DC voltage having the same polarity as the toner (in this embodiment, a negative polarity) is applied. Is attracted to the toner image receiving body 14a and fed to the transfer area 14b. By charging the paper with the same polarity as the toner, the toner is prevented from being attracted to the toner image on the toner image receiving member 14a or the toner image on the photosensitive drum 10, thereby preventing the toner image from being disturbed.

In the transfer area 14b, the first voltage to which a voltage having a polarity opposite to that of the toner (positive polarity in this embodiment) is applied.
The surface image on the photosensitive drum 10 is collectively transferred onto the surface of the recording paper P by the transfer device 14c as a transfer means. At this time, the back surface image on the toner image receiver 14a is not transferred to the recording paper P but exists on the toner image receiver 14a.

The recording paper P on which the toner image has been transferred onto the surface is
Polarity opposite to toner (positive polarity in this embodiment)
Transfer device 1 as a second transfer means to which a voltage of
4g, and the backside image on the peripheral surface of the toner image receiving body 14a is collectively transferred to the backside of the recording paper P by the backside transfer unit 14g (FIG. 3C).

The recording paper P on which toner images are formed on both sides is
Next, the toner image is separated from the toner image receiving body 14a by the curvature of the driving roller 14d or, if necessary, by a paper separating AC static eliminator 14h as a transfer material separating means.
The toner image on the recording paper P is fixed by being conveyed to the fixing device 17 through a conveying unit 160 provided with the fixing roller 17a and applying heat and pressure between the fixing roller 17a and the pressure roller 17b. The recording paper P on which double-sided image recording has been performed is sent with its front and back images reversed, and is discharged by a discharge roller 18 to a tray outside the apparatus.

The toner remaining on the peripheral surface of the toner image receiver 14a after the transfer is transferred to the toner image receiver 1 provided opposite the guide roller 14e with the toner image receiver 14a interposed therebetween.
The toner image receiving member is cleaned by a toner image receiving member cleaning device 140 having a toner image receiving member cleaning blade 141 and a cleaning roller 144 that can be brought into and out of contact with the toner image receiving member 4a.

The toner remaining on the peripheral surface of the photosensitive drum 10 after the transfer is subjected to static elimination by the photosensitive drum AC static eliminator 16, and then the residual toner is removed by the cleaning device 19 to form the next image. Enter the cycle.

In the above embodiment, as shown in FIG.
The drive roller 14d and the support roller 14j, both of which are grounded, are conductive rotating rollers, and the support roller 14j faces the backside transfer unit 14g with the toner image receiver 14a as an intermediate transfer member therebetween, and the drive roller 14d Faces the paper separation AC neutralizer 14h, and the back transfer unit 14g and the paper separation AC neutralizer 14h are arranged at a predetermined interval. By providing a conductive rotating roller grounded to each of the backside transfer unit 14g and the paper separation AC static eliminator 14h, a discharge current is caused to flow through each of the rotation rollers, so that the backside transfer unit 14g and the paper separation unit are separated. Discharge interference with the AC static eliminator 14h is prevented, and each discharge is stabilized. Further, by separating the second transfer means and the separation position at an interval, the separation of the transfer material at the separation position becomes easy. Further, by using a grounded conductive member facing the backside transfer unit 14g as a support roller 14j which is a conductive rotating roller,
When the back transfer unit 14g discharges, a strong electrostatic force acts between the toner image receiver 14a and the grounded conductive member, causing the toner image receiver 14a to come into close contact with the grounded conductive member, resulting in unstable conveyance. Is also gone.

(Embodiment 1) An embodiment of the invention according to claims 1 and 7 will be described with reference to FIGS. 1, 5 and 6. FIG.

The photosensitive drum 10 and the fixing device 17 are respectively disposed near the left and right side ends inside the device. As a result, the toner image receiving member 14a and the upper portion of the transporting section 160 are recessed, that is, in FIG. A concave space S that is long in the transport direction as shown by a chain line is formed.

In the space S, a top plate 200 of the apparatus main body is provided.
Is provided on the cover member 300, and the cover member 30
The upper and lower sides of the toner image receiving body 14a and the upper surface of the transport unit 160, that is, the transport surface of the recording paper P are opened or closed, so that maintenance such as a jam process can be easily performed. The surface will also be protected.

Further, the space S above the lid member 300
Is used as an installation space for the paper discharge tray 400, so that the recording paper P is also discharged toward the aforementioned concave portion, that is, the space S.

As shown in FIG. 5, the photosensitive drum 10 is a cartridge 10 which is detachable with a scorotron charger 11, a developing device 13, a cleaning device 19 and the like.
The guide rail 100A on the side surface of the cartridge 100 is engaged with a guide member (indicated by a dashed line) on the inner wall of the apparatus main body to be set at a predetermined image forming position. The cartridge 17 is held in a detachable cartridge 170,
The guide rail 170A on the zero side engages with a guide member (indicated by a dashed line) on the inner wall of the apparatus main body to be set at a predetermined fixing position.

The above cartridges 100 and 170
In attaching and detaching, first, the discharge tray 400 is rotated counterclockwise with the discharge roller 18 as a fulcrum, moved and retracted to a position shown by a dashed line, and then the lid member 300 is moved to the shaft attaching portion 300A. It is rotated clockwise as a fulcrum, opened to the position shown by the dashed line, and held at each position. Then, the cartridge 1
00 and 170 are pulled out in the direction of arrow A or B along the respective guide members and are removed from the apparatus main body. The cover member 300 is provided on the lower surface with the backside transfer device 1 described above.
4g and the paper separation AC static eliminator 14h are installed and supported, and when they are opened, they are simultaneously retracted from the transport surface.

On the other hand, the following measures are taken as measures for exhausting heat and ozone inside the apparatus.

As shown in FIG. 5, the laser optical system 12 has at least its end portion disposed close to and facing the space S, and the electrical component 500 of the apparatus has a rear portion of the apparatus main body as shown in FIG. The heat generated by the laser generator and the power supply circuit is discharged to the outside of the apparatus through slit-shaped ventilation holes opened in the top plate 200 of the apparatus.

The ozone generated by the cartridge 100, the back transfer unit 14g, and the paper separating AC neutralizer 14h is also absorbed and removed by an ozone filter provided with a slit-shaped ventilation hole opened in the cover member 300.

Further, the heat generated from the fixing device 17 is discharged to the outside of the device through a slit-shaped ventilation hole provided in the cartridge 170.

The exhaust from the above-described air holes is performed by the convection of the air in the apparatus.

Each slit-shaped ventilation hole is provided with a blind so that unnecessary light, dust, foreign matter and the like can be prevented from entering the inside of the apparatus.

(Embodiment 2) An embodiment of the present invention according to claims 9 and 11 will be described with reference to FIGS.

The image forming apparatus according to the first embodiment is also used as a printer unit of a copying apparatus having a document image reading device.

In the figure, in the image reading apparatus 1000, the original D is a first mirror unit 10 having an integrated light source.
The original image is read by horizontal scanning with the first mirror 01 and the second mirror unit 1002 that follows the same direction at half the speed, and the image is formed on the image sensor 1004 by the projection lens 1003. The formed image is sequentially sent to an image memory as an electric signal, stored as image data, and output as laser light from the laser optical system 12 in accordance with an image forming process in a printer unit.

According to the ninth aspect of the present invention, there is provided a copying apparatus comprising:
As shown in FIG. 7, the image reading device 1000 is mounted on the upper surface of the printer unit with one end thereof being pivotally mounted, and is rotated clockwise through the shaft mounting unit 1000A to a predetermined angle. , The upper part of the printer unit is widely opened.

Therefore, even in the copying apparatus, the lid 300
As a result, it is possible to realize a copying apparatus in which maintenance is easy and the photosensitive drum 10 and the fixing device 17 can be freely attached and detached.

The copying apparatus according to the eleventh aspect of the present invention provides the image reading apparatus 1000 as shown in FIG.
Is fixed integrally to the upper part of the printer unit via a support, and a slight space is provided between the printer unit and the upper surface of the printer unit.

On the other hand, in the printer section, the cover member 300 and the paper discharge tray 400 are both foldable, so that when the respective lids are opened or moved and retracted, the action of an elastic member manually or attached to the joint section is performed. Is automatically folded as shown by a dashed line.

Therefore, the lid member 300 and the paper discharge tray 400 can be opened or moved and retracted without moving the image reading apparatus 1000, and as a result, maintenance is easy and the light exposure is performed as in the previous embodiment. A copying apparatus in which the body drum 10 and the fixing device 17 can be freely attached and detached is realized.

[0058]

According to the first aspect of the present invention, the effects of heat and ozone generated in the apparatus are removed, and the heat and ozone are efficiently discharged or removed from the apparatus only by the circulation of air by convection. A forming apparatus is realized, and the effect is further enhanced by claims 2 and 6.

According to the third to fifth and seventh and eighth aspects of the present invention, there is provided an image forming apparatus which is easy to perform maintenance such as jam clearance and replacement of equipment and has excellent practicality.

Further, the image forming apparatus which eliminates the influence of heat and ozone generated in the apparatus according to the ninth to twelfth aspects is easy to maintain and excellent in practicality by being used as a printer section of a copying apparatus. The copying machine will be provided as office equipment.

[Brief description of the drawings]

FIG. 1 is a cross-sectional configuration diagram illustrating an embodiment of an image forming apparatus according to the present invention.

FIG. 2 is a side sectional view of the image forming body of FIG.

FIG. 3 is a diagram illustrating a state where toner images are formed on both sides of the image forming apparatus according to the present invention.

FIG. 4 is a diagram showing a positional relationship between a rotating roller provided at a position facing a first transfer unit and a second transfer unit and a rotating roller provided at a transfer material separating position from an intermediate transfer member.

FIG. 5 is an explanatory view showing opening of the upper portion of the apparatus and operation of attaching and detaching a cartridge.

FIG. 6 is a perspective view showing the arrangement of vent holes for exhaust heat and ozone removal.

FIG. 7 is a configuration diagram of a copying apparatus that enables the image reading apparatus to be movable.

FIG. 8 is a configuration diagram of a copying apparatus that fixes the image reading apparatus.

[Explanation of symbols]

 Reference Signs List 10 photoconductor drum 11 scorotron charger 12 laser optical system 13 developing device 14a toner image receiver 14c transfer device 14d drive roller 14g back surface transfer device 14h paper separation AC neutralizer 14j support roller 17 fixing device 162 spur 100, 170 cartridge 200 heaven Plate 300 Lid member 400 Discharge tray 1000 Image reading device

Claims (12)

[Claims] 1. An image forming apparatus, comprising: an image forming body; and a conveying unit and a fixing unit for transferring a transfer material on which a toner image on the image forming body has been transferred. An image forming apparatus comprising: means for arranging means on both sides of an apparatus main body; and a recess provided between the image forming body and the fixing means. 2. The image forming apparatus according to claim 1, further comprising a laser optical system for performing image exposure on the concave portion. 3. The image forming apparatus according to claim 1, wherein the image forming body is attached to and detached from the recess. 4. The image forming apparatus according to claim 1, wherein the transfer material is discharged toward the concave portion. 5. The transporting device according to claim 1, wherein an openable / closable lid member is provided in the recess, and a transport surface of the transport unit is opened by opening the lid member. Image forming apparatus. 6. The image forming apparatus according to claim 1, wherein an electrical component is arranged on the device rear side of the concave portion. 7. An image forming apparatus comprising: an image forming body; and an intermediate transfer unit and a fixing unit that enable transfer of a toner image on the image forming body and that convey a transfer material, are disposed substantially in a horizontal direction. An image forming apparatus, wherein a formed body and the fixing unit are respectively disposed on both side ends of an apparatus main body, and a concave portion is formed so as to face a conveyance surface of the intermediate transfer unit. 8. The image forming apparatus according to claim 7, wherein an openable and closable lid member is provided in the concave portion, and a transfer unit or a charge removing unit is moved by closing the lid member. 9. A copying apparatus comprising: a reading section for reading a document image; and a printer section for forming a toner image and transferring / fixing to a transfer material based on image information from the reading section. The reading unit is movably provided on the upper part of the printer unit, the printer unit has an image forming body and a fixing unit disposed on both side ends of the apparatus main body, and a recessed part with a cover is formed in an intermediate part, A copying apparatus, wherein a transfer surface of a transfer material is opened by movement of a reading unit and opening of a cover of the concave portion. 10. The copying apparatus according to claim 9, wherein the image forming body and the fixing unit are attached to and detached from the recess. 11. A copying apparatus comprising: a reading section for reading a document image; and a printer section for forming a toner image and transferring / fixing to a transfer material based on image information from the reading section. The reading unit is fixed on the upper part of the printer unit, and the printer unit has an image forming body and a fixing unit arranged on both side ends of the apparatus main body, and has a concave portion with a cover formed in an intermediate portion. A copying apparatus, wherein a transfer surface of a transfer material is opened by a lid. 12. The copying apparatus according to claim 11, wherein the image forming body and the fixing unit are attached to and detached from the recess.