JPS61114277A - Image forming device - Google Patents

Abstract

PURPOSE:To reduce the size of the whole device and to easily handle a unit by using a conveyance part which stores the residue of a cleaned visual image in an image carrier as the grip of the unit. CONSTITUTION:The residual developer of the visual image on a cleaned photosensitive body 10 which is deposited in a cleaner box 133 is carried in a toner storage box 117 through the rotation of a conveying auger 116, and conveyed to the side of the photosensitive body 10 by a spiral auger 121 which is driven. In this case, the toner storage box 117 serves as the grip of the unit together with a cover which forms the conveyance path for the residual developer from the cleaner box 133 to the side of the photosensitive body 10. Consequently, the handling of a cartridge when it is put in and taken out is made convenient and the device is reduced in size on the whole.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an image forming apparatus including a cleaning means for cleaning developer remaining on an image bearing member, such as an electronic copying machine.

[Technical background of the invention and its problems]

Conventionally, the cleaning device for this type of electronic copying machine was
As illustrated in FIG. 29, a cylindrical (drum)-shaped image carrier (hereinafter referred to as photoreceptor) SO charged by an appropriate means
An electrostatic latent image is formed on O, and this electrostatic latent image is visualized by a developing system and transferred onto a predetermined image support (hereinafter referred to as transfer material), and is also transferred onto the photoreceptor 300 after the transfer. While cleaning is performed by scraping off the developer image (hereinafter referred to as visible image) remaining on the surface of the photoreceptor 300 with the cleaning blade 301 that is in contact with the surface of the photoreceptor 300, the residue after cleaning is removed. It has a structure in which the developer is conveyed to the front side of the apparatus main body by a cylindrical auger 302 and waste toner can be stored in a box 303.

However, in the residual developer storage means in such conventional devices, the waste toner storage unit 303 is installed with the waste toner storage unit 303 hanging down at the front part of the device body, so it is difficult to dispose of the residual developer in the waste toner storage unit 303. Or, during maintenance and inspection, the cleaner section or the cleaner and photoconductor unit may need to be handled with waste toner. Because the Tux 303 is installed inside the front cover of the main body of the device, its size and capacity are limited, and the amount of waste toner is limited. Problems such as the need to frequently replace the tsukusu occurred.

Conventionally, as another means, waste toner is collected along the longitudinal direction of the photoreceptor 300, as illustrated in FIG. Tsukusu 3
04, and the residual developer scraped off by the cleaning blade 301 is directly stored in this waste toner index 304. A certain volume is required for the Tx 304, which poses problems such as increasing the size of the cleaner section or the unit section of the cleaner and the photoreceptor.

[Purpose of the invention]

The present invention has been made based on the above-mentioned circumstances, and it is possible to install the cleaned visible image residue (developer in copying machines, etc.) storage section in a space-saving position, and as a result, the entire device can be cleaned. It is an object of the present invention to provide an image forming apparatus which is downsized and whose unit including an image carrier and a cleaner section is easy to handle.

[Summary of the invention]

In order to achieve the above-mentioned object, the present invention stores the residue of the cleaned visible image inside the image carrier, and a part for conveying the residue from the cleaner part to the image carrier has a handle. By configuring this, it is possible to downsize the cleaner section or the unit section of the cleaner and the image carrier, and the unit can be easily handled.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail with reference to an embodiment shown in FIGS. 1 to 27.

FIGS. 1 and 2 show the overall internal structure of an image forming apparatus, such as an electronic copying machine, according to the present invention, and numeral 1 in the figures indicates the main body of the copying machine. This copying machine main body 1 discharges an image support (hereinafter referred to as a transfer material), not shown, which is conveyed via a drive system 5 and a control system 6 by a feed device 4 consisting of a paper feed cassette 2 or a manual feed guide 3. As shown in FIG. 2, the upper half on the document table 8 side with the conveyance path leading to the tray 7 as the boundary can be opened and closed, and an image of a document (not shown) placed on the document table 8 can be copied. In this process, a drum-shaped image bearing member (hereinafter referred to as a photoreceptor) 10 constituting the transfer device 9 is charged by a charging charger 11 at 1,500 yen.
A document image uniformly charged to V~-900V and uniformly irradiated by an exposure rung 13 constituting an exposure device 12 is transferred onto a photoreceptor 10 by a focusing transmitter (trade name: self-box lens array) 14. This electrostatic latent image is visualized by a developing device 15 and transferred onto the transfer material conveyed from the feeding device 4 via a transfer charger 16. While the visual image is transferred and further fixed by the fixing device 17 and discharged to the paper discharge tray 7,
It has a configuration in which a cleaning device 18 can clean the developer (hereinafter referred to as toner) remaining on the photoreceptor 10 after transfer, and a static eliminator 19 can eliminate the static electricity.

That is, the feeding device 4 feeds out the transfer material P accumulated in the paper feed cassette 2 by rotation of the half-moon-shaped paper feed roller 21, for example, so as to form the furrows shown in FIGS. 3 to 6. This paper feed roller 2 has a main drive system and a spring clutch 22 that enable the driving force to be attached and detached, and the claw portion 24a of the operator 24 of the solenoid 23 is connected to the sleeve of the spring clutch 22. The rotation of the paper feed roller 21 is stopped by being locked to the protrusion 22g protruding from the surface of the paper feed roller 22. On the other hand, when the claw portion 24& is detached from the protrusion 221 due to the retracting action of the operator 24 due to the excitation of the solenoid 23, , the paper feed row 222 is rotated one rotation to feed the transfer material P so that it reaches a pair of feed rollers consisting of a drive roller 25 and a driven roller 26, and the transfer material P is further conveyed to the lower unit by this pair of feed rollers 25 and 26. The roller is fed to a pair of aligning rollers consisting of a driving roller 27 attached to the upper unit and a driven roller 228 attached to the upper unit. At this time, the pair of aligning rollers 27 p 2 B is in a stopped state, and is rotated again at a timing when the leading edge of the visible image on the photoconductor 10 and the leading edge of the transfer material P can align with a predetermined position, thereby aligning the transfer material. P is conveyed through the front guide 29.degree. 30 so as to come into contact with the photoreceptor 10, thereby enabling transfer. Then, the transfer material P after transfer is transferred to the nipping roller pair 31. ．． 32 and transported to a fixing device 17, which will be described later.
Between the contact surfaces with the photoreceptor 10, one end is fixed to the front guide 29, and the other end is connected to the holding rows 231, 3.
A peeling tape 33 fixedly passed between the two is disposed so that the transfer material P can be forcibly peeled off from the photoreceptor 10 by the peeling tape fss.

On the other hand, 34 in the figure indicates the insertion port of the manual guide 3,
The transfer paper P inserted from this insertion opening 34 is passed between the pair of manual feed rollers 35 and 36 to operate the detection switch 37, and in this state, is the copy paper P? By pressing the button, the manual feed roller pair J5, , ? A similar transfer is performed by rotating the driving roller 35 of No. 6 to feed the transfer material P to the aligning row 2 pair 27.28, and at this time, the paper feed roller 21 is controlled not to rotate. There is. Further, as shown in FIG. 4, one lower drive roller 35 of the pair of manual feed rollers is arranged obliquely to the traveling direction of the transfer material P (indicated by a solid arrow), and the other upper driven roller 36 is formed into a spherical shape, thereby working to correct the skew of the transfer material P.

7 and 8 show the driving mechanism of the document table 8. A guide plate 41 is provided at the lower part of the document table 8, and an engagement hole 41 formed in the guide plate 41 allows the document table 8 to A guide roller 43 fixed to a chain 42 that moves along the direction of movement of
The chain 42 is engaged with the gear 44, and the document table 8 is driven by the movement of the chain 42.
The hook is passed to a sprocket 45 formed integrally with the gear 44, and this gear 44 is a swinging gear that rotates around its central axis as a fulcrum.
-45 is meshed with the gear 47 that is pivotally supported,
The chain 42 is moved by removably meshing the gear 47 with a gear 50 which is pivotally supported at one end of the rotating lever 48 via a stud 49 and driving the gear 47 to rotate. The driving force from a drive motor 51 is transmitted to the gear 50 pivotally supported by the rotating lever 48 via a group of gears 52, 53, and 54, and the rotating lever 48 is The other end is always urged upward by the spring 55 in the direction in which the gear 50 is disengaged from the gear 47, and the other end is biased upwardly by the spring 55, and the other end is pushed upwardly by the spring 55.
6 to the solenoid 57 so that the solenoid 5
By the suction operation of 7, the rotation lever 48 is moved by the spring 5.
5 in the X direction (counterclockwise direction) shown in FIG.
The gear 50 is rotated to mesh with the gear 47. At this time, the suction force of the solenoid 57 is
The tension of the spring 55 is set to be stronger, 1 m, the gear 5
0 is constantly lifted upward during rotation, that is, in the direction of meshing with the gear 47, by the force applied to the tooth surface meshing with the gear 47 to ensure meshing between the two, and the drive motor 51
When the main drive is stopped due to the stoppage of the gear 50, the rotating lever 48 is rotated clockwise by the biasing force of the spring 55 because the rotational force that tries to lift the gear 50 is removed, and the gear 50 is removed from the gear 47. It has become. moreover,
A positioning plate 58 is attached to the chain 42, and this plate 58 operates a microswitch 59 fixed to a fixed frame (not shown). When the microswitch 59 is pressed during the initial copying operation, the transfer material P is fed, the chain 42 is rotated once, and then when the plate 58 presses the micro switch 59, the drive motor 51 is stopped, the gears 47 and 50 are disengaged, and the document table 8 is stopped. This is what has become.

In this case, the gear 47 and the gear 50 have idle rollers (not shown) to keep the distance between their axes constant when they mesh and rotate. Further, this drive mechanism is such that the document table 8 is connected to the main drive system by the operation of the solenoid 57 once, and the previously fed transfer material is transferred when the next sheet is fed. The transfer material conveyance path is set so that the paper has already been discharged. Furthermore, in continuous copying, copying can be accomplished by rotating the document table once by issuing a paper feed signal.

9 to 11 show an exposure apparatus 12, which is mounted on a fixed frame 61 made of a heat-resistant resin such as polybutyl terephthalate, an exposure lamp 13, a focusing transmitter 14, etc.
Each component such as the static eliminator 19 and the reflection plates 62 and 63 are assembled. The fixed frame 61 also serves as a holding member so as to vertically hold the focusing transmitter 14, and a temperature fuse 64 is positioned and fixed at a proper position. That is, the exposure apparatus includes a pair of upper and lower reflectors 62 and 63 that reflect light from the exposure run fxs.
It focuses the light and illuminates the original placed on the original platen 8,
and a static eliminator 65 constituting a static eliminator 19 to be described later.
The upper reflecting section 66 illuminates the original by reflecting the light L1 from the light source and reflection side of the exposure run f1.9 against the transmitter 14, thereby creating a shadow even if the original has unevenness. It's becoming difficult. Further, the lower reflecting plate 63 is formed with an opening 63g and a reflecting portion 63b so as to direct the light from the exposure run f13 onto the photoreceptor 10, and the reflected light causes the photoreceptor 10 to be charged before it is charged. It is possible to eliminate static electricity.

Furthermore, both ends of the exposure lamp 13 are held by power supply terminals 67 as shown in FIG. 10 and FIG. The exposure rung 13 is screwed together and can be moved up and down by turning this screw 69, so that the position of the exposure rung 13 with respect to the reflector plate 62, 63 can be variably adjusted.This function balances the light amount in the longitudinal direction of the illuminated part on the original. Take it,
The button is designed to make it easy to obtain a uniform and even copy image.

A static eliminator 65 constituting the static eliminator 19
is opened and closed according to the movement of the document table 8, is closed when an electrostatic latent image is being formed on the photoreceptor 10, and is opened at other times to direct light from the exposure rung 13 onto the photoreceptor 10. The opening/closing mechanism is structured as shown in FIGS. 12 and 13 to reduce toner consumption by erasing excess potential on the photoreceptor 100. That is, the static eliminating shutter 65 has a light shielding member 65a on the back surface, and is linked to a cam mechanism that is always urged in the closing direction by a sliding ring 71 to align the transfer material and replenish toner. A kick member 72 is attached to the lower part of the table 8, and the document table 8 moves in the direction A at the start of the copying operation.
With this movement, the kicking member 72 rotates the first actuator 73. This first actuator 73 is
When the document table 8 is rotated in the opposite direction by moving in the direction A, it is returned by the biasing force of the spring 74, and the sleeve 7 is moved by the spring 75.
6 is rotated. One end of a spring 78 is hooked to a groove (not shown) formed at one end of the sleeve 76, and the other end of the spring 78 is hooked to a first cam 79. A protrusion 76g is formed on the sleeve 76, and when the second actuator 77 is caught on this protrusion 761,
The rotation of the three differential 60 is suppressed, the biasing force of the spring 78 is released, and the first cam 79 does not rotate, and when the second actuator 77 rotates, the second actuator 77 The sleeve 76 is removed from the protrusion 76g of the sleeve 76 and rotates. At this time, when the drive gear 80 rotates in the direction of arrow B, the first cam 79 also rotates in the same direction due to the biasing force of the spring 78.

This first cam 79 is formed with a large diameter portion 79a and a small diameter portion 79b, and this large diameter portion 79k has a rotation support shaft 81 of the M2 actuator 77 when the first cam 79 is stopped.
The other end of the first lever 82, one end of which is fixed, comes into contact with the
When the first cam 79 rotates, the first lever 82
rotates and stops when it comes into contact with the small diameter portion 79b, and the rotary support shaft 81 rotates by the amount of rotation of this first lever 82, thereby rotating the operating lever 83 fixed to this rotary support shaft 81. let This operating lever 83 moves the static eliminating shutter 65 in the opening direction (in the direction of transition from the solid line state to the dotted line state in FIG. 9) against the biasing force of the spring 71, while the return force is applied to the static eliminating shutter 65. This is due to the biasing force of the spring 71. Further, in the figure, 84 is a second cam attached to the first cam 79 so that its adjustment position can be changed, and has a large diameter portion 84h and a small diameter portion 84b.
When the first cam 79 is stopped, the swing lever 85 is
When one end is pressed into contact with the spring 86 by the biasing force and the other end of the swing lever 85 is brought into contact with the protrusion 87 & of the sleeve of the spring clutch 87, the transmission of the driving force is prevented. 84 rotates the swinging lever 85 and the other end is connected to the Sgeling clutch 8.
Remove the spring 8 from the protrusion 87a of the sleeve 7.
The driving force is transmitted by the biasing force of 6 to rotate the shaft 88, and the driving force is transmitted to the pair of aligning rollers 27 and 28 of the transfer material feeding device 4 shown in FIGS. 3 and 4. . Further, reference numeral 89 in the figure is a spring clutch attached to a shaft 90 that transmits driving force to a toner replenishment mechanism of the developing device 15, which will be described later. is locked, and by energizing this solenoid 92, the tip of the operating rod 93 is removed from the protrusion 91, thereby releasing the spring clutch 8.
The shaft 90 of 9 rotates to drive the toner replenishment mechanism.

By the way, the charger 11 is the ninth
As shown in the figure, a charging wire 101 and a shield 102
The photoreceptor 10 is charged with a surface potential of -500V to -900V by arranging the distance between the photoreceptors 10 and the photoreceptor 10 so that the inflow current ratio is 7:1 with a distance of 7 m:91111, and an exposure device 12. The electrostatic latent image formed on the photoreceptor lo by image exposure is moved to a developing device 15, which will be described later, and is visualized with toner.

The photoreceptor 1o is made into a cartridge together with a charger 11 and a cleaning device 18, which will be described later.
The structure is manufactured by applying an organic photoconductor layer formed of a generation layer and a transport layer to a thickness of 17 to 23 μm on a double-cut aluminum cylinder 105 with a wall thickness of 0.8 μm, for example. The front flange 106 and the rear flange 107 on both end faces are formed of a plastic material, and in particular, the rear flange 107 is made of a conductive plastic material with a resistance of 10 to 108 Ω (for example, Polyayatal E manufactured by Polyplastics Co., Ltd.).
S-5 or EB-10), and is grounded through this rear flange 107, fulfilling the function of a photoreceptor.

The cleaning device 18 also includes a light shield plate 1 covering the upper part of the cleaning device 18.
11, and is made by cleaning the toner remaining on the photoreceptor 1o after transfer, and is made of polyurethane rubber (55°
700), etc., and an IJ cover rep L/-de 113, and the ridgeline of this cleaning blade 112 is
The contact angle with the tangent line is 1 to 5 degrees, and the pressing force is 0.8 to 1. By setting QLiP/++i+, damage to the surface of the photoreceptor 10 is reduced.

That is, the toner remaining on the photoreceptor 1o is removed by the cleaning blade 112 attached to the first support plate 114.
The toner is completely scraped off, and this scraped off toner is
The toner is glued to the second support plate 115 at the lower part or received by the cover blade 113, and is temporarily transported into the toner storage box 117 by the spiral-shaped delivery auger 116 shown in FIG. Darth Zorokerato 118, Ladder Chain 119. The toner is introduced into the photoreceptor 10 via the ladder zorokerato 120 and the toner carrying auger 121 and is housed therein.

Furthermore, the charge remaining on the photoreceptor 10 after cleaning is
As shown in FIG. 9, the static electricity is eliminated by the light (static elimination light) L directly guided from the exposure device 12.
This is done by reflecting the static eliminating light guided by the reflecting portion 63b and irradiating it onto the photoreceptor 10 through the lighting opening 111a opened in the light shield plate 11. As shown, an air exhaust port 111b is formed adjacent to the lighting port 11&,
The air inside the cartridge, in which a large amount of ozone and other products are generated due to negative charging, can be efficiently discharged to the outside, and each of these components is assembled to a frame 130 that constitutes the cartridge body. This frame 130 is a rear frame 13.

Front frame 132. The rear frame 131 is composed of a reinforcing frame 134 having a cleaner box 133 and an exposure slit 134*f, and the rear frame 131 has a pair of upper and lower bin holes 135 for positioning the rear side of the charger 1.
135, and a charging charter 11 is provided in this pin hole 135.
A pair of upper and lower pins 103, 103 provided on the rear side of the holder are fitted and positioned. Further, one of the pins 135 is made of a conductor that can be electrically connected to the charging wire 101 of the charging charger 11, and high voltage is applied from the main body by a conductive elastic member (not shown). Furthermore, a pair of upper and lower positioning holes 1 are provided on the front side of the charger 11.
04° 104 is formed, and the drum shaft 7 has a drum shaft 142 fitted into the hole 104, 104 to be fitted into the front flange 106 of the photoreceptor 10.
A bracket 136 is inserted from the outside through a front frame 132 and a bracket 137 is fitted thereinto to position the charger 11. Further, in this case, the rotational drive of the photoreceptor 10 is performed by coupling a power transmission member (not shown) provided on the rear flange 107 of the photoreceptor 1θ and a power transmission member provided on the main body side, and furthermore, the auger 116 The driving force of the toner carrying auger 121 can be obtained by providing a cassilling pin (not shown) at the tip of the toner carrying auger 121 and coupling it to the front 7 flange 106 of the photoreceptor lθ, and also by attaching the cartridge body to the main body of the apparatus. 1, the toner storage box 117 is used as a handle, and the cartridge can be taken in and taken out along a guide member formed inside the main body 1 (not shown). It is something that exists.

15 to 19 show a developing device 15 for visualizing the electrostatic latent image formed on the photoreceptor 1o, and a magnet row 2 rotatably supported by a support frame 151.
152. It is composed of a doctor 153, a scraping plate 154, a stirring shaft 156 having stirring blades 155, etc. A handle 157 is rotatably attached to the support frame 151, and two handles are attached to both sides of the handle.
Book guide pins 158 and 159 are provided protrudingly at the same position. As shown in FIG. 16, one of these pins 158 and 159 is inserted into a guide groove 161 of a retaining plate 160 fixed to the top frame of the main body, and serves as a pivot point for the entire support frame 151. other pin 15
9 is engaged with a retaining groove 162 recessed in one side of the holding plate 160 to position the gear lug between it and the photoreceptor 1o, and the developing device can be moved by holding the handle 157. 15 is inserted into the top frame of the main body, the pin 159 and the back side of the support frame 151 serve as a guide. And 1 in the figure
Reference numeral 63 denotes a hopper for replenishing toner, and a replenishment roller 164 made of a stripe material is disposed at the opening on the bottom side. As well as being supplied within
It is a plug-in type from the main body. That is, this hopper 163 is constructed by inserting a projection piece 166 formed on the front side end face into a hole 167 opening on the front side of the device main body 15, and inserting the protrusion piece 166 formed on the front side end face into a hole 167 that opens on the front side of the device main body 15, and inserting the protrusion piece 166 formed on the front end face into the hole 167 that opens on the front side of the device main body 15, and the claw part 16 of the locking lever 168 provided on the rear side.
9 is fixed by pushing it into a hole 170 opened on the rear side of the device main body 15, while driving force is transmitted from the main body side to a gear 171 fixed to the rotating shaft 165 of the replenishing roller 164. toner replenishment is performed. In addition, ribs 174, 1
75 are formed respectively, and these ribs 174.1
75 forms a support guide when the hole a-163 is installed, and also serves as a support guide when the hole a-163 is removed.
The hopper 163 can be easily replaced by lifting the claw part 169 upward from the hole 170 on the apparatus main body 15 side and removing the hopper 163. - When the hopper 163 is removed, the device body 15 is tilted inward about the rotating shaft 176 (in the direction of arrow H in FIG. 15), and the hopper 163 is inserted into the main body 15.
The upper opening can be sealed.

By the way, the main body of the developing device 15 contains a developer which is a mixture of developer powder and a magnetic material (carrier).
By transmitting the driving force from the main body side to the gear 177, the stirring shaft 156 is rotated in the direction of the arrow Y in FIG. 15, and the outer sleeve of the magnet roller 152 is rotated in the direction of the arrow 2. 152 is provided with a developing pole by positioning several kinds of transport poles facing the surface of the photoreceptor 10 using fixed magnets, so the developer is attracted and adhered to the magnetic roller 152 and is moved to a predetermined position by the doctor 153. After increasing the thickness, the electrostatic latent image on the photoconductor 10 can be developed at the position of the development pole, and the developer after development advances in the direction of rotation of the sleeve of the magnet row 2152 and passes through the scraping plate. 154 and is deposited again around the stirring shaft 156.

Further, as shown in FIG. 19, a developer concentration detection device 178 is incorporated in the scraping plate 154, and an electrical contact 179 of this detection device 178 is made to protrude from the front frame on the front side of the IT main body 15. Scraping board 154
The detecting device 178 detects developer powder and magnetic powder in the developer. A signal is output to control the developer powder concentration to a predetermined amount by detecting a change in the mixing ratio of the toner.
It has a structure in which developer powder is replenished by rotationally driving the developer.

In this way, the visible image formed on the photoreceptor 10 by the above-described developing system is transferred to the transfer material P by the transfer charger 16.
As shown in FIG.
The charge on the transfer material is removed by a charge removal member (for example, a zerostat) disposed in series with the transfer charger 16 , and the transfer material is led to the fixing device 17 .

As shown in FIGS. 20 to 23, this fixing device 17 is separable into upper and lower units, and transfers the transfer material P onto which the visible image has been transferred to the upper unit 182 through a guide 18. Roller 183 and lower unit 18
It is fed to the fixing part between the press roller 185 of No. 4 and is twisted,
190℃±20℃ heat and 400~1000? /crn
The upper and lower units are installed in the upper and lower frames of the copier main body 1, which opens in a clamshell shape, to facilitate maintenance, inspection, paper jam removal, etc. A locking mechanism 186 of the copying machine main body 1 is installed in the upper unit 182, and a locking claw 1 of the locking mechanism 186 is installed in the upper unit 182.
86a is engaged with an engagement hole 188 formed in the frame 187 of the lower unit 184. The heat roller 183 attached to the frame 189 of the upper unit 182 is made of, for example, an aluminum pipe material (φ23) with a wall thickness of approximately 1 inch, and the surface thereof is coated with Teflon resin to prevent toner from adhering, and the inside of the heat roller 183 is heated. Heater rung 1 consisting of a halogen lamp (900W) for
The front electrode 19 has a configuration in which a front electrode 90 is inserted and arranged, and both ends of the front electrode 19 are attached to insulating members 191, 191.
2 and rear electrode 193, and 9
In order to have the performance of a 00W halogen lamp reaching 190°C within 25 seconds, it is effective to keep the thickness of the heat roller 183 within 1.5 degrees, and the wattage of the lamp and the 190°C The relationship between the time (T) to reach the temperature and the wall thickness of the heat roller 183 is shown in FIG.
The graph curve (b) shows the case where the wall thickness is 1.0 m1m). Further, at the end of the heat roller 183,
For example, a heat insulating drive gear 194 made of polyphenylene sulfide and a slide bearing 195 are provided, and this gear 194 is coupled to a main body drive section (not shown) to drive the heat roller 183, and the slide It is attached to the frame 189 via a bearing 195 with a heat insulating function. Further, 196 in the figure is a thermistor, which is connected to the heat roller 183 via a plate spring 197.
The heat roller 183 is supported by the frame 189 so as to be in constant contact with it with an optimum pressing force of 80 to 120 y-/cm', and the heater rung 190 is turned on to maintain the surface temperature of the heat roller 183 at 190°C ± 20°C.・It can be controlled by turning it off. Reference numeral 198 in the figure denotes a light shielding plate attached to both ends of the heater rung 190, which reduces light leakage during inspection of the heater lamp, and also serves to reduce light leakage during inspection of the heater lamp.
199 in the figure is a temperature heater, which acts as a guide when mounting the holder 2.
The holder 200 is attached to the frame 189 via the heat roller 183, and the holder 200 is made of heat-resistant resin such as polyphenylene sulfide. Guaranteed. and again,
In the drawing, reference numeral 201 denotes a cleaning blade made of silicone rubber or the like, and is designed to scrape off the toner slightly adhered to the heat roller 183 after fixing.

On the other hand, the press roller 185 is made of silicone rubber with a core metal having a diameter of 8 pieces, a wall thickness of 8 m, and a hardness of 200 to 30 degrees (JIS-A scale), and has a line connecting the center with the heat roller 183. By tilting the transfer material P by 10° to 12° with respect to the vertical line, the rear end of the transfer material P is prevented from jumping up.
The support member 202f applies pressure to the front heat roller 183 through the support member 202f, and comes into contact with the front heat roller 183, so that it can be driven by the heat roller 183. Reference numerals 205 and 206 in the figure are paper discharge rollers that feed the transfer material P to the paper discharge tray 7 side. The angle formed by the line connecting the contact point of 185 and the contact point of paper ejection rollers 205 and 206 forms a 0° to 20° angle and is located on the lower side. ,
'rr? ~1001il-/J paper) (in this case, if the angle is 30° or more, there is a risk that cardboard, etc. of 80 P/m' or more may curl downwards). ). The lower paper ejection row 220
5 is formed by press-fitting a rubber roller 205b made of, for example, butadiene acrylonitrile rubber into a stainless steel shaft 205a, and a shaft bearing 207 is mounted on the frame 187.
Both ends are held via slide bearings 207,
An end portion of the support member 202 that supports the press roller 185 rests on the press roller 207, and thereby the support member 202 is supported so as to be rotatable about the axial center of the lower paper discharge roller 205 as a fulcrum. The lower paper ejection roller 2
A driving gear 208 is provided at the rear end of the press roller 185, and this gear 20B meshes with a gear 209 provided at the end of the press roller 185 via an intermediate gear 210, and can be driven with the rotation of the press roller 21850. In addition, the intermediate gear 210 is connected to the press roller 185.
The gear 209 of the press roller 185 and the lower paper ejection roller are 205 and the gear 20B, and thereby the supporting member 20
Even if the press roller 185 moves up and down with the vertical movement of 2, each gear group 208, 209, 210 can always operate well. At this time, the lower paper ejection roller 2
05 is the press roller 1 driven by the heat roller 183
85 through gear groups 208, 209, 210, so the circumferential speed depends on the thermal expansion of the press roller 185.
If the circumferential speed of the press roller 185 is set to increase by 2% when the press roller 85 thermally expands during fixing, wrinkles etc. can be prevented from occurring and stable paper feeding performance can be obtained.

Further, the upper paper ejection row 2206 has a configuration in which two polyacetal rollers are integrally formed on each of the left and right sides and attached to the upper frame 189.
The lower paper ejection roller 20 is pressed and pressurized with a
5, and a paper discharge detector 213 is installed near the contact point with the lower paper discharge row 2205.

Furthermore, 214 in the figure is a fixing section consisting of the heat roller 183 and press roller 185, and paper ejection rollers 205, 2.
A peeling claw made of heat-resistant resin such as polyphenylene sulfide provided between the heat roller 183 and the heat roller 183 is supported via a spring material 215 so that the tip thereof contacts the heat roller 183 with an optimum force of 10 to 2 oz. It is configured to also serve as a guide for the transfer material P.

That is, the heat roller 183 and the press roller 18
The transfer material P that has passed through the fixing section between 5 and 5 is prevented from being wrapped around the heat roller 183 by the peeling claw 214, and is sent between the paper ejection rollers 205 and 206.
The transfer material P that has passed between 05 and 206 is transferred to the paper ejection roller 20.
5. Excess charge on the transfer material can be removed by contacting the extension part 189a of the upper frame 189 of the fixing section, which is installed on the common tangent of 206 at an angle of 45 degrees or less with the tangent. The frame 189 is grounded, thereby making it possible to easily eliminate static electricity after fixing the transfer material without using a separate static elimination means, and to prevent curling of the transfer material after it is ejected. It is something that By the way, the lower paper ejection roller 205 attached to the lower fixing unit 184 described above is attached to the lower frame 187.
The cut-and-raised portion 187a is supported by a cut-and-raised portion 187a formed in
If the lower paper ejecting roller 205 is allowed to move freely with a certain margin, the support plate 20 that supports the press roller 185 can be moved freely.
2 can also be made freely movable, and the press roller 18
5 can be moved back and forth, and in this state, the copying machine body 1 can be moved back and forth.
When the upper fixing unit 182 of
7 to position the lower paper ejection roller 205 of the lower fixing unit 184, the lower paper ejection roller 205 and the upper paper ejection roller 206 can always be maintained in parallel, and the heat roller Since the press roller 183 and the press roller 185 are always in parallel contact and an optimal contact state can be obtained, stable paper feeding performance is always maintained even if the fixing section is separated into upper and lower sections.

By the way, the photoreceptor 10, the charger 11, and the cleaning device (cleaner section) 18 shown in FIGS. 9 and 14 are assembled into the frame 130 and unitized in a cartridge type, as described above. As shown in FIG. 25, the toner storage box 117
The sleeve portion 1 is assembled to the outside of the front frame 132 with a grippable distance d therebetween.
The cleaner box 17a is placed inside the cleaner box 133, and the other sleeve portion 117b is placed inside the photoreceptor 10. A spiral conveyance auger IJ6 is arranged in the cleaner box 133 to provide communication between the photoconductor 10 and the photoreceptor 13, and as shown in FIG.
One end of the toner storage box 11 is passed through the sleeve portion 117a.
The residual developer of the visible image on the cleaned photoreceptor 10 deposited in the cleaner box 133 facing inside the toner storage box 11 is removed by the rotation of the transport auger 116.
7, and the residual developer introduced into this toner storage box 117 is transferred to Ladder! Rocket) 118°7/-
It is conveyed to the photoconductor 10 side by a spiral-shaped conveyance auger 121 that rotates through a chain 119 and a ladder zorokerato 120. The drum shaft 141 is inserted into the insertion hole 106a of the front flange 106 of the drum shaft flange 141 to support the photoreceptor 1o. Further, the rotational driving force of the conveyance auger 116 is generated by rotating a drive gear 220 provided at the rear shaft end of the conveyance auger 116 through an intermediate gear 221 and meshing with a drive system on the apparatus main body (not shown). It can be transmitted and interlocked by meshing with the gear 222 of the body 10, thereby driving the mechanism for conveying/carrying the residual developer from the cleaner section to the photoreceptor 1o as well as driving the photoreceptor and the drive system on the main body side. It is linked to. Further, the toner storage box 117 also serves as a handle for the unit together with a cover that forms a conveyance path for residual developer from the cleaner box 133 to the photoconductor lo side, making it convenient to handle when loading and unloading cartridges. I have to. Further, in the figure, reference numeral 223 denotes a sealing material, which is not made of an elastic member such as urethane.
6a can be prevented from clogging.

It should be noted that the present invention is not limited to the above-mentioned embodiments. For example, the drum-shaped photoreceptor 10 is formed into an endless belt shape as shown in FIG.
0, and the residual developer in the cleaner box 133 may be stored in the toner storage section 230 by a toner storage box 117 equipped with a transport/carry-in mechanism.

In addition, it goes without saying that the present invention can be modified in various ways without departing from the gist of the invention.

〔Effect of the invention〕

As explained above, the present invention transfers a developer image formed on an image carrier onto an image support, and cleans the residue of the developer image remaining on the image carrier after transfer. In an image forming apparatus equipped with a cleaning device formed by a cleaning device, the residue of a cleaned developer image is conveyed and carried into an image bearing member and stored therein, so compared to conventional devices, , the interior of the image carrier, which used to be a dead space, can be effectively used as a storage space for waste residue.
Moreover, when replacing the image carrier holding IJ part and other parts as a unit, the residual conveying/carrying mechanism part can be used as a handle, making it easy to handle.
This provides an excellent effect in that the unit section and the entire device can be made smaller.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of the internal structure of an image forming apparatus according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the same in an open state, and FIGS. 3 to 6 are illustrations of transfer material feeding. FIGS. 7 and 8 are schematic explanatory diagrams showing the drive mechanism of the document table; FIGS. 9 to 11 are schematic explanatory diagrams showing the exposure mechanism; FIGS. FIG. 13 is a schematic explanatory diagram showing the drive mechanism of the static eliminating shutter in the static eliminating device, FIG. 14 is a schematic explanatory diagram showing an exploded view of the charging mechanism and cleaning mechanism around the image bearing member (photoreceptor), and FIG. FIG. 19 is a schematic explanatory diagram of the developing mechanism, FIGS. 20 to 23 are schematic explanatory diagrams of the fixing mechanism, and FIG. 24 is a diagram showing the thickness of the heat roller of the fixing mechanism, the wattage of the heater lamp, and the heating time. 25 to 27 are explanatory diagrams showing the relationship, and FIGS. 25 to 27 are schematic explanatory diagrams showing a mechanism for transporting and storing the residue of the developer image (residual developer) inside the image carrier after cleaning by the cleaning device. 2
8 is a schematic explanatory diagram showing another embodiment of the image carrier according to the present invention, and FIGS. 29 and 30 are schematic explanatory diagrams showing two examples of conventional cleaning devices. DESCRIPTION OF SYMBOLS 1... Copying machine main body, 9... Transfer device, 10... Image carrier, 11... Charger, 12... Exposure device, 15... Developing device, 16... Transfer charger ,
18...Cleaning device, P...Transfer material, 112...Cleaning blade, 116...Toner delivery auger,
117... Toner storage box, 121... Toner carrying auger, 157... Handle. Applicant's agent Patent attorney Takehiko Suzue JP-A61-
114277 (13) Guku α) School = 667- Figure 15 Figure 16 Figure 27 Figure 28 Figure 30

Claims (1)

[Claims] Transferring the developer image formed on the image carrier onto the image support,
An image forming apparatus comprising a means for cleaning the residue of the developer image remaining on the image carrier after transfer, and in which a transfer section including the image carrier and the cleaning means is integrated into a unit,
An image forming apparatus characterized in that a means is provided for transporting and storing the residue of the cleaned developer image inside the image carrier, and the transport path portion is used as a handle of the unit.