JPH0334767Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a toner collection box that removes, collects, and stores residual toner after transfer from a photoreceptor on which a toner image is formed in a transfer-type electrostatic copying machine or the like. .

Typically, in the prior art, the residual toner removed from the photoreceptor is collected in a toner collection box installed on the side of the copier body. When disposing of collected toner, the toner may spill and stain the surrounding area.

An object of the present invention is to provide an improved toner collection box that allows the toner collection box to be removed from and attached to the body of a copying machine without spilling toner.

FIG. 1 shows a toner collection box 1 according to an embodiment of the present invention.
1 is a perspective view of a transfer-type electrostatic copying machine equipped with a copying machine.
A front cover 5 is attached to the body 2 by hinges 3 and 4. A cassette 6 containing copy paper is located on one side of the machine body 2 when the front cover 5 is shown in an open state.
A tray 7 for storing copied paper is mounted on the other side. A document placing table 8 is provided on the upper part of the body 2 so as to be movable in the left-right direction in FIG. 1, and a document holding cover 9 is attached to this document placing table 8. When the front cover 5 is open as shown in FIG. 1, the toner collection box 1 mounted on the machine body 2 can be removed, or the toner collection box 1 can be mounted on the machine body 2 again.

FIG. 2 is a longitudinal sectional view of the transfer type electrostatic copying machine shown in FIG. 1.

Light from an exposure lamp 100 provided in the machine body 2 is irradiated onto the document while the document is held down by a document holding cover 9 on a transparent plate 10 provided on the document table 8. This original image is reflected on mirror 1
1 , 12 , 13 , a lens 14 and a reflecting mirror 15 , an image is formed on an exposure area 17 on a cylindrical photoreceptor 16 . The photoreceptor 16 is charged by a corona discharger 18, and this charged area becomes an exposure area 17.
an electrostatic latent image is formed. This electrostatic latent image is developed into a toner image by a magnetic brush developing device 19. Copy paper 2 stored in cassette 6
0 is taken out one by one by the rotation of the paper feed roller 21, conveyed by conveyance rollers 22 and 23, and conveyed to the transfer area 24. A corona discharger 25 is provided in this transfer area 24 .
The copy paper 20 to which the toner image has been transferred is removed by a peeling means 26.
The toner image is peeled off from the photoreceptor 16 by the rollers, conveyed on a guide plate 27, and fixed by a heat fixing device 28. The fixed copy paper 20 is discharged onto the tray 7 by a paper discharge roller 29.

After being transferred in the transfer area 24 on the photoreceptor 16, the remaining toner is collected by the toner collecting means 3.
Recovered by 0. This toner collecting means 30
A blade 31 resiliently contacts the surface of the photoconductor 16 to scrape off residual toner, a storage box 32 that stores the scraped toner, and a toner provided near the bottom of the storage box 32 to store the toner. and a spiral member 33 that guides the toner flowing toward the front of the machine body 2.

FIG. 3 is a side view of the toner collection box 1 shown attached to the machine body 2, and FIG. 4 is a partially cutaway sectional view of the toner collection box 1 in the state shown in FIG. The toner collection box 1 has a rectangular horizontal cross section and is open at the top. A lid 34 is provided on the top of the toner collection box 1 around a pin 35 so as to be openable and closable. This lid 34 has a handle 34a.
is provided so that the lid 34 can be opened easily.

FIG. 5 is a perspective view showing the state in which the toner collection box 1 is removed from the machine body 2. One side wall 36 of the toner collection box 1 has a locking notch 37 that is open downward.
A locking member 38 having a diameter is fixed. Aircraft 2
A locking body 40 having a locking protrusion 39 that fits into the locking notch 37 is fixed to the locking body 40 . The other side wall 41 of the toner collection box 1 parallel to the side wall 36 is configured similarly, and the locking body 40 has a corresponding locking protrusion 42 .

As clearly shown in FIG. 4, on the side wall side of the body 2, a horizontally extending cylindrical portion 43 formed at the bottom of the storage box 32 is connected to an insertion hole 4 formed in the side wall 2a.
4 and protrudes toward the front of the fuselage 2 (to the left in Figure 4). The spiral member 33 is inserted into the cylindrical portion 43 . A discharge hole 45 is formed at the lower left end of the cylindrical portion 43 . The left end surface of this cylindrical portion 43 is partially closed by an end plate 46. By rotationally driving the spiral member 33 about its horizontal axis, the toner stored in the storage box 32 is conveyed to the front side of the machine body 2 and discharged from the discharge hole 45 .

FIG. 6 is a front view of a portion of the toner collection box 1 seen from the line - in FIG. 4. A notch 49 that is open upward is formed in the rear wall 48 of the toner collection box 1 . The outer periphery of this notch 49 has a rear side wall 4.
A protruding wall 50 protruding from 8 toward the side wall 2a of the fuselage 2
is formed. A sheet 51 made of an elastic material such as rubber is attached to the rear side wall 48 inside the toner collection box 1.
is pasted and fixed. This sheet 51 is formed with an insertion hole 52 through which the cylindrical portion 43 is inserted. The lower part 53 of the insertion hole 52 is continuous, and has slight notches 5 at equal intervals in the circumferential direction.
5, 56, and 57 are formed. The fact that the lower part 53 of the insertion hole 52 is continuous in the circumferential direction means that
That is, the cutouts 55, 56, and 57 are not provided at least in the lower portion 53.

The locking notch 37 formed in the locking member 38 of the toner collection box 1 is locked to the forming projection 39, and the other locking projection 42 is also locked in the same manner, that is, FIG. When the toner collection box 1 is attached to the machine body 2 as shown in FIG. The hole 45 is located inside the toner collection box 1. Spiral member 3
3 is rotated, the toner in the storage box 32 is collected into the toner collection box 1. Insertion hole 5
The inner diameter of the tube 2 is larger than the diameter of the cylindrical portion 43 (see FIG. 6). A portion of the sheet 51 in the vicinity of the insertion hole 52 is in elastic contact with the outer periphery of the cylindrical portion 43, thereby preventing the toner in the toner collection box 1 from leaking to the outside.

When removing the toner collection box 1 from the machine body 2, the toner collection box 1 is displaced upward in FIG. Move to the front of Aircraft 2 (towards Figure 3). A virtual line 58 in FIG. 3 indicates a state in which the toner collection box 1 has been partially moved toward this side from the machine body 2, and a partially cutaway cross section of this state is shown in FIG. A portion of the sheet 51 near the lower part 53 of the insertion hole 52 is connected to the spiral member 3 when the toner collection box 1 is displaced upward as shown by the imaginary line 58.
Contact the bottom of 3. When the toner collection box 1 is moved to the front of the machine body 2, the lower part 53 of the sheet 51 wipes the lower part of the spiral member 33, and the discharge hole 45
This prevents toner from spilling outside. In particular, the lower part 53 of this insertion hole 52 is continuous in the circumferential direction, and the notches 56 and 57 are offset from the lower part, so that the toner from the discharge hole 45 is prevented from spilling outside from the notches 56 and 57. It will be done.

In the embodiment described above, the sheet 51 has an insertion hole 52.
Notches 55, 56, 57 are formed around the
Although this makes it possible for the portion near the insertion hole 52 to contact the cylindrical portion 43 and the spiral member 33 and bend smoothly, if the sheet 51 has sufficient elasticity, the notches 55, 56 , 57 may not be provided.

Further, in the above-described embodiment, a notch 49 that is open upward is formed in the rear wall 48 of the toner collection box 1, and the sheet 51 is fixed facing this notch 49. As an example, a through hole may be formed instead of the notch 49.

As described above, according to the present invention, since the lower part of the insertion hole formed in the sheet body is continuous in the circumferential direction, when the toner collection box is removed from the machine body, toner is prevented from spilling and staining the surrounding area. I can escape.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a transfer-type electrostatic copying machine equipped with a toner collection box 1 according to an embodiment of the present invention, and FIG. 2 is a vertical cross-section of the transfer-type electrostatic copying machine shown in FIG. 1. figure,
Figure 3 is a side view showing the toner collection box 1 attached to the machine body 2, Figure 4 is a partially cutaway sectional view of the toner collection box 1 in the state shown in Figure 3, and Figure 5 is the toner collection box. 1 is a perspective view showing the state in which the toner collection box 1 is removed from the body 2, FIG. 6 is a rear view of a part of the toner collection box 1 seen from the line - in FIG. 4, and FIG.
FIG. 2 is a partially cutaway sectional view showing the operation when the is removed from the fuselage 2. 1... Toner collection box, 2... Body, 32... Storage box, 33... Spiral member, 37... Locking notch,
39, 42... Locking protrusion, 43... Cylindrical portion, 45...
...Discharge hole, 51... Sheet, 52... Insertion hole, 5
3...lower part, 49...notch.

Claims (1)

[Scope of Claim for Utility Model Registration] In a toner collection box that collects conveyed toner by a spiral member inserted through a horizontally extending cover cylinder fixed to the body of a copying machine, an insertion hole through which the cover cylinder is inserted. The elastic sheet with the hole formed therein constitutes a part of the side wall of the toner collection box body;
This toner collection box is characterized in that the main body of the toner collection box can be moved upward and removed from the machine body, and the lower part of the insertion hole is continuous in the circumferential direction.