JPS61208068A - Developer supplying device - Google Patents

Abstract

PURPOSE:To supply securely a developer through a small supply port by con taining the developer in a container, providing a guide body, rotating the con tainer by a rotating means so as to agitate the developer by the guide body and guiding it to the supply port. CONSTITUTION:When a toner 12 is supplied to a developing device 11, a motor 22 is driven,and the container 17 is rotated in the direction of an arrow through gears 21 and 20. Thus the toner 12 is guided to the supply port 24 while it is agitated by the guide body 25, and supplied to the receiving part of the developing device 11 from the supply port 24. With this constitution, the developer can be supplied without leaving it in the container, the supply port can be made smaller, and the supply can be securely executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Corporation of the Invention] The present invention relates to a developer replenishing device provided in, for example, an electronic copying machine.

[Technical background of the invention and its problems]

In an electronic copying machine, an electrostatic latent image of a document is formed on a photoreceptor, and a developer is supplied to this electrostatic latent image from a developing device to make it visible. Furthermore, when the amount of developer in the developing device decreases due to this development, developer is replenished from the replenishing device to the developing device.

As the above-mentioned replenishment device, for example, those shown in FIGS. 4 and 185 are known. That is, in the figure, reference numeral 1 denotes a toner case, and toner 2 is accommodated within this toner case 1. Further, an opening 3 is formed at the bottom of the toner case 1, and this opening 3 is closed by a seal 4, as also shown in FIG.

Thus, this toner case 1 is detachably attached to the upper surface of the developing device 5, and by peeling off the seal 4,
The toner 2 is supplied into the developing device 5 from the opening 3.

In the figure, 6 is a developing roller rotatably provided in the developing device 5, and 7 is an opening formed on the upper surface of the imager 5.

However, the conventional replenishing device replenishes the toner 2 by letting it fall naturally from the opening 3.
If the toner case 1 is replaced, the toner 2 may leak outside or the fiA7 figure (al, (
As shown in b), there was an inconvenience that in case 1Pi (two toner 2 remained) and it was not possible to replenish the toner properly.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a developer replenishment device that can replenish developer well without leaking the developer to the outside or leaving it in the container. This is what we are trying to provide.

[Summary of the invention]

In order to achieve the above object, the present invention accommodates a developer in a container and provides a guide, and by rotating this container by a rotating means, the developer is stirred by the guide and guided to a replenishment port. , the developer can be reliably replenished through a small replenishment port.

[Embodiments of the invention]

The present invention will be described below with reference to an embodiment shown in FIGS. 9i & 1 to 3. In the figure, 11 is a developing device, and this developing device 1
A supply roller 14 for supplying toner 12 as a developer to a photoreceptor 13 is rotatably provided within the photoreceptor 1 . Further, the donor 12 is placed in the developing device 11 and the donor 12 is placed in the supply roller 1.
The toner 1 is provided with a spiral blade 26 for agitating and conveying the toner 1, and is replenished by a replenishing device 16, which will be described later.
A spiral conveyance shaft 15 is provided for conveying the developer 2 in the longitudinal direction within the developing device 11. The lower side of the conveyance shaft 15 is surrounded by a curved case 27, and a plurality of through holes 28 are bored in the bottom surface of the case 27 in its long direction.

The case 27 and one end of the conveyance shaft 15 are protruded to the side from one side of the developing device 11, and this protruded end is attached to a toner replenishing device 16, which will be described later.
It serves as a receiving portion 29 for receiving the toner 12 supplied from the toner supply port 24.

On the other hand, a toner replenishing device 1 is provided on the upper side of the developing device 11.
16 are provided. This toner replenishing device 16 has a cylindrical container 17, and the toner 1 is contained inside the container 17.
2 is accommodated.

Further, the container 17 is rotatably supported by a support member 19, and a gear 20 is attached to one end of the outer periphery. This gear 2o includes a gear 21 constituting a rotating means.
are meshed with each other, and this gear 21 is attached to an output shaft 23 of a motor 22. Further, a replenishment port 24 is bored at the other end of the container 17, and a guide plate 25 as a guide body is provided inside the container 1 in an inclined state. One end of the guide plate 25 is located close to the replenishment port 24, so that the toner 12 can be directed toward the replenishment port 24 and into the system.

Further, the supply port 24 of the container 17 is connected to the conveyance shaft 1.
5 and the receiving portion 29 on one end side of the case 27 in close proximity to each other.

Thus, when replenishing the toner 12 into the developing device 11, the motor 22 is driven and the container 17 is rotated in the direction of the arrow via the gears 21 and 20. As a result, Figure 3 (
As shown in a) to (C), the toner 12 in the container 17
is guided to the replenishment port 24 while being agitated by the guide member 25, and is replenished from the replenishment port 24 to the receiving portion 29 of the developing device 11. The toner 12 supplied to this receiving portion 29
is transported into the developing device 11 by the rotation of the transport shaft 15, and during the transport, the through hole 2 of the case 27
Fallen from 8...

The heated toner 12 is agitated and conveyed to the developing roller 14 by the rotation of the spiral blade 26, and is supplied to the photosensitive drum 13 by the rotation of the developing roller 14.
m-image will be performed.

As described above, in this embodiment, since the container 17 is rotated and the toner 12 inside is stirred by the guide plate 25 and forcibly guided to the replenishment port 24, the toner 12 remains in the container 17. There is no need to worry about this, and it is possible to replenish the fluid well without increasing the size of the supply port 24.

Note that the present invention is not limited to the above embodiment,
Of course, various modifications can be made within the scope of the gist.

〔Effect of the invention〕

As described above, the present invention includes a container that stores developer and discharges the developer from a replenishment port, a rotating means that rotates the container, and a rotating means that is provided in the container and that rotates the container to agitate the developer. However, since it is equipped with a guide body that guides the developer supply and replenishment, it is possible to replenish the developer without leaving it in the container, and the replenishment opening can be made smaller, preventing the developer from falling when replacing the container. This has the effect that there is no leakage.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a schematic configuration diagram showing a developing device and a toner supply device, FIG. 2 is a perspective view A, and FIG. 3 (a) -(C) are explanatory diagrams showing toner replenishment operations, FIGS. 4 to 7 show conventional examples, s4 is a perspective view showing the developing device and toner replenishment device, and FIG. 5 is a side sectional view thereof. , $6 Figure is a longitudinal sectional front view of the toner replenishing device, Figure 7 (al, (bJ) is an explanatory view showing the residual state of toner. 12... Toner (developer), 17... Container, 24・
... Supply port, 20.21 ... Gear (rotating means), 22
...Motor (rotating means J, 25...planning plate (guide body). Applicant's agent Patent attorney Takehiko Suzue Figure 3 1z (C) Figure 6 Figure 7 (a) (b)

Claims (1)

[Claims] A container for storing developer and discharging it from the replenishment port, a rotating means for rotating the container, and a rotating means provided in the container for stirring the developer and guiding it to the replenishment port by rotating the container. A developer replenishing device characterized by comprising a guide body.