JPH0214045Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electrostatic copying machine which is divided into two parts, an upper unit and a lower unit, and which has a cleaning device that prevents toner from spilling when disposing of residual toner. It is something.

Conventionally, in an electrostatic copying machine that is divided into two parts, an upper unit and a lower unit, the cleaning device is installed in the upper unit and the toner collection container is installed in the lower unit. Due to the movement, toner spills out of the toner collection container from the toner discharge hole provided in the cleaning device, causing an inconvenience in that the surrounding area becomes dirty.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electrostatic copying machine having a cleaning device that eliminates toner spillage and eliminates the above-mentioned drawbacks.

The means adopted by the present invention in order to achieve the above object is an electrostatic copying machine consisting of an upper unit and a lower unit, which can be divided into two parts. A cleaning device for collecting toner remaining on the body is provided, and the cleaning device includes a cylindrical portion having a discharge hole for discharging the collected toner. A toner collection container is provided for storing waste toner discharged from the discharge hole, and the cylindrical portion is provided with a cylindrical body that rotatably covers the outer peripheral surface of the cylindrical portion. has a discharge hole on its outer circumferential surface that communicates with the discharge hole of the cylindrical portion for discharging the toner, an operating rod is connected to the cylindrical body, and the lower unit has a discharge hole for discharging the toner. Further, a supporting means is provided which cooperates with the operating rod to rotate the envelope when the upper unit is opened and closed, and the operating rod and the supporting means cooperate to rotate the upper unit. When the unit is opened, the casing body is rotated to a position covering the discharge hole of the cylindrical part, and when the upper unit is closed, the casing body is rotated to a position where it covers the discharge hole of the cylindrical body and the discharge hole of the cylindrical part. This is an electrostatic copying machine in which the envelope is rotated to a position where it communicates with the hole.

To explain the operation of the above-mentioned electrostatic copying machine, when the upper unit is opened, the operating rod and the support means work together to rotate the envelope cylinder to a position where it covers the discharge hole of the cylinder part. When the upper unit is closed, the envelope is rotated to a position where the discharge hole of the envelope and the discharge hole of the cylindrical portion communicate with each other.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view of an electrostatic copying machine 1 divided into an upper unit 2 and a lower unit 3. As shown in FIG.

Light from an exposure lamp 4 provided in the upper unit 2 is directed toward a document (not shown) on a document table 5. This original image is focused on an exposure area 8 on a cylindrical photoreceptor 7 via a rod-shaped lens 6. The photoreceptor 7 is charged by a corona discharger 9, and this charged area reaches the photosensitive area 8 to form an electrostatic latent image. This electrostatic latent image is developed into a toner image by a magnetic brush developing device 10.

On the other hand, the copy paper 1 stored in the cassette 11
2 are taken out one by one as the paper feed roller 13 rotates, and are transported to the transfer area 16 by transport rollers 14 and 15. In this transfer area 16,
A corona discharger 17 is provided. The corona discharger 17 transfers the toner image onto the copy paper 12 that is sent to the transfer area 16 . Next, the copy paper 12 with the toner image transferred thereto is removed by a peeling device 18.
The toner image is peeled off from the photoreceptor 7 by the toner image, and the toner image is fixed onto the copy paper 12 by a thermal fixing device 19. The fixed copy paper 12 is transported by a paper ejection roller 25.
It is discharged onto the tray 26. In the photoreceptor 7,
The toner remaining after being transferred in the transfer area 16 is collected by a cleaning device 27. The cleaning device 27 includes a blade 28 that resiliently contacts the surface of the photoreceptor 7 to scrape off residual toner, a storage box 29 that stores the scraped toner, and a blade 28 that is provided near the bottom of the storage box 29. It includes a spiral member 31 as a conveyance means for guiding the toner stored therein to the toner collection container 30 .

FIG. 2 is a sectional view of the cleaning device 27 and the toner collection container 30 in a state where the upper unit 2 and lower unit 3 are combined. At the bottom of the storage box 29 of the cleaning device 27, a horizontally extending cylindrical portion 32 formed to enclose the spiral member 31 is connected to a semicircular notch 33 at the bottom of the side wall 2a of the upper unit 2.
It protrudes to the front of the upper unit 2 (to the left in FIG. 2) through it. Further, a semicircular notch 34 is also provided in the upper part of the lower unit 3 so that the upper unit 2 and the lower unit 3 fit tightly together even if the cylindrical part 32 is present. A discharge hole 35 is formed at the lower left end of the cylindrical portion 32 . Spiral member 31
By being rotated about its horizontal axis, the residual toner stored in the storage box 29 is conveyed to the left end of the cylindrical portion 32 and discharged from the discharge hole 35.

Although the toner collection container 30 is not shown,
It is attached to the side wall 3a of the lower unit 3 by supporting means such as a magnet, and a lid 36 is provided on the open upper part. This lid 36 is provided with a toner recovery hole 37 at a position corresponding to the discharge hole 35 provided at the left end of the cylindrical portion 32 at the bottom of the cleaning device 27 when the upper unit 2 is closed downward.

A hole 38 for supporting the spiral member 31 is provided at the left end of the cylindrical portion 32, and a rotating shaft 39 of the spiral member 31 passes through the hole 38 and is stopped by a stop ring 40. Further, a cylindrical envelope body 41 is installed in the cylindrical portion 32 so as to enclose it.

FIG. 3 is a perspective view showing the relationship between the envelope 41 and the cleaning device 27 shown in FIG. The envelope 41 is closed at one end, leaving a hole 42 through which the rotating shaft 39 of the spiral member 31 passes. A rotary shaft 39 is passed through the hole 42 and secured by a stop ring 43 so that the envelope 41 is rotatably installed around the central axis of the cylindrical portion 32.

The housing body 41 has a discharge hole 44 (see Fig. 2) which is the same as or slightly larger than the discharge hole 35 at a position corresponding to the discharge hole 35 provided in the cylinder portion 32 when the upper unit is closed. ) is provided.

Further, an operating punch 45 is provided on the packaging cylinder 41 perpendicularly to the central axis of the packaging cylinder 41. The operating pestle 45
A support means 46 for supporting the operating punch 45 is provided at the free end (lower left in FIG. 3).

This support means 46 is a side wall 3a of the lower unit 3.
It consists of a support stand 47 fixed to the support stand 47, and a support piece 49 which slidably supports the operating punch 45 in its hole 48 and is swingably supported with respect to the support stand 47.

Next, the operation of the envelope 41 will be explained with reference to FIG.

When the upper unit 2 is closed, that is, when copying is possible, the discharge hole 35 of the cylinder 32 and the discharge hole 44 of the envelope body 41 overlap at that position, as shown by the imaginary line, and form a spiral pattern. The residual toner conveyed by the member 31 passes through the discharge holes 35 and 44 and is collected in the toner collection container 30.

When the upper unit 2 is opened due to a paper jam, maintenance, etc., the discharge hole 35 of the cylinder part 32 tilts as the upper unit 2 tilts, and the discharge hole 44 of the packaging cylinder 41 is opened by the operating punch 45. 49 so that it moves in the opposite direction to the discharge hole 35 of the cylindrical portion 32 (counterclockwise in FIG. 4). As a result, both discharge holes 3
5 and 44 occurs, and by opening the upper unit 2, the discharge hole 35 of the cylinder portion 32 is closed by the envelope body 41.

In addition, in the specific example of the present invention, the operating pestle 45
Although the explanation has been given based on the support stand 47 and the support piece 49 as the support means, this support means may be a mere protrusion provided on the lower unit, and may be configured to slidably support the operating punch. Needless to say.

The present invention has the configuration as described in the claims of the utility model registration, and in particular, the cylindrical portion is provided with a cylindrical body that rotatably covers the outer peripheral surface of the cylindrical portion, and the cylindrical body includes: The outer peripheral surface thereof has a discharge hole for communicating with the discharge hole of the cylindrical portion for discharging the toner, and the cylindrical body is connected with an operating punch, and the lower unit is further provided with an upper portion. Supporting means is provided which cooperates with the operating punch to rotate the envelope when opening and closing the unit, and the operating punch and the supporting means cooperate to open the upper unit. When the casing body is rotated to a position covering the discharge hole of the cylindrical part and the upper unit is closed, the discharge hole of the casing body and the discharge hole of the cylindrical part communicate with each other. Since this is an electrostatic copying machine in which the envelope body is rotated to a position where the envelope is rotated, it is possible to provide an electrostatic copying machine that has a simple and inexpensive configuration, has excellent responsiveness, and can reliably prevent toner scattering. Since the periphery of the cylindrical portion does not become bulky, the cylindrical portion and the toner collection container are placed close to each other, making it possible to realize a smaller space.

[Brief explanation of the drawing]

Figure 1 shows the upper unit 2 and lower unit 3.
FIG. 2 is a vertical cross-sectional view of the electrostatic copying machine 1 that is divided into parts, and shows the cleaning device 27 and toner collection container 30 when the upper unit 2 and lower unit 3 are combined.
3 is a perspective view showing the relationship between the packaging body 41 shown in FIG. 2 and the cleaning device 27, and FIG. 4 is a diagram showing the action of the packaging body 41 shown in FIG. 3. be. 2... Upper unit, 3... Lower unit, 2
7... Cleaning device, 30... Toner collection container, 31... Spiral member, 32... Cylindrical portion, 35, 4
4...Discharge hole, 41...Envelope body, 45...Operation punch, 46...Support means.

Claims (1)

[Claims for Utility Model Registration] In an electrostatic copying machine consisting of an upper unit and a lower unit, which can be divided into two parts, the upper unit is configured to remove toner remaining on the photoreceptor. A cleaning device for collecting the toner is provided, and the cleaning device includes a cylindrical portion having a discharge hole for discharging the collected toner, and the lower unit is provided with waste discharged from the discharge hole of the cylindrical portion. A toner collection container for storing toner is provided, and the cylindrical portion is provided with a cylindrical body that rotatably covers an outer circumferential surface of the cylindrical portion, and the cylindrical body has the outer circumferential surface thereof covered with the cylindrical body. It has a discharge hole that communicates with the discharge hole of the cylindrical portion and discharges the toner, and an operating rod is connected to the housing body, and the lower unit further has an operation lever for opening and closing the upper unit. A supporting means is provided that cooperates with the operating rod to rotate the envelope cylinder, and when the operating rod and the supporting means cooperate to open the upper unit, The encasing body is rotated to a position covering the discharge hole of the cylindrical portion, and
An electrostatic copying machine in which, when the upper unit is closed, the envelope is rotated to a position where a discharge hole of the envelope and a discharge hole of the cylindrical portion communicate with each other.