JPS6375768A - Toner leakage preventive structure for toner cartridge - Google Patents

Abstract

PURPOSE:To prevent the outside periphery from being contaminated, at the time of taking out a cartridge, by covering the outside periphery of the cartridge with a bag which is longer than said periphery, locking one end thereof to the cartridge, and sticking the other end to a cartridge installing part so as to be detachable. CONSTITUTION:Both end opening parts of a bag 23 which is installed to the outside periphery of a toner cartridge 21 are stuck to a flange 22 and a ring plate 28, the bag 23 is folded up in a shape of a bellows and the cartridge 21 is loaded to an installing part 7 with its opening part 24 up, and the flange 22 is stuck to the installing part so as to be detachable by a both face adhesive tape which has been stuck to the reverse side of the flange 22. Subsequently, the cartridge is half rotated and a toner is dropped down into a hopper, the cartridge is taken out while stretching the bag, and in the end, the both face tape is removed. At the time of taking out the cartridge, the periphery is not contaminated because its outside periphery is covered with the bag.

Description

[Detailed Description of the Invention] [Summary] The purpose of the present invention is to make it possible to replace toner cartridges that supply dry developer, so-called toner, used in copiers and electrophotographic printers without getting your hands dirty. The toner cartridge can be installed in the mounting part of the developing machine or
This purpose is achieved by automatically wrapping the toner cartridge in a bag when it is removed from the toner cartridge.

[Industrial application field]

The present invention relates to a structure for preventing toner leakage of a toner cartridge.

In recent years, copying machines and electrophotographic printers that use toner have become popular.
It is rapidly becoming popular because it has advantages such as good printing quality, high resolution, high speed, and low noise. In this case, toner replenishment is left to the operator, especially in popular and intermediate models.

However, since toner is a fine powder, it is easily blown away, and replenishing toner is a task that requires dirty hands and is disliked by operators.Therefore, a solution to this problem is strongly desired.

[Conventional technology]

FIG. 5 is a perspective view showing an example of a conventional toner cartridge.
It is equipped with The operating portion 2 is provided with a flange 4 and an operating handle 5. The opening 3 is for dropping the toner provided in the cartridge, and is sealed with a tape-shaped sealing member 6.

As shown in FIG. 6, the developing machine that replenishes toner using the toner cartridge 1 includes a replenishing roller 9. Packet roller 10. Doctor blade 11° magnet roller 12. It is configured by providing a scraper 13 and the like.

Toner replenishment into the developing tank 8 of this developing machine is performed in the following procedure.

When replenishing toner, the empty old toner cartridge 1-ridge mounted in the cartridge mounting part 7 is taken out, and a new toner cartridge 1 is mounted in the cartridge mounting part 7 with the opening 3 facing upward. At this time, the seal member 6 is attached while being peeled off from the back side toward the front, and when the attachment is completed, the seal member 6 is completely peeled off. After installation is completed, operate the handle 5 to rotate the toner cartridge 1 by 180 degrees. The toner falls into the hopper 14 of the developing tank, and the replenishment is completed.

The toner in the hopper 14 is supplied to the bottom of the developing tank 8 by the supply roller 9, and the toner is supplied to the bottom of the developing tank 8 by the packet roller 10.
The magnet is sent to the magnet roller 12 and attached to its surface. The toner adhering to the surface of the magnet roller 12 rises to the doctor blade 11 and reaches a development position with its brush height being regulated, and development with the toner is performed at the development position. The toner that did not contribute to development is then scraped off by the scraper 13.

[Problem that the invention seeks to solve]

As mentioned above, when replenishing toner, an old empty toner cartridge is taken out, but toner adheres to the area around the opening of the toner cartridge, and when taking out the toner cartridge, the toner may stain hands or get spread around. It gets scattered. This problem becomes even more serious when the toner adheres to the outer peripheral surface of the toner cartridge or when a small amount of toner remains inside the toner cartridge.

[Means for solving problems]

The present invention provides a toner leak prevention structure for a toner cartridge that can solve the above-mentioned problems.As a means for that purpose, in the present invention, the outer periphery of the toner cartridge is provided with a longer length than the toner cartridge. A bag is provided that is foldably fitted into the toner cartridge, and one end of the bag is axially latched to and supported by the operation side end of the toner cartridge, and the other end of the bag is provided with a bag that fits into the toner cartridge in a collapsible manner. A joining means is provided for removably joining the cartridge mounting portion of the cartridge.

[Effect]

When a new toner cartridge is installed in the cartridge mounting section of the developing machine when replacing the cartridge, the other end of the bag is removably joined to the cartridge mounting section. When rotating the toner cartridge 1800 times in this state,
One end of the bag is axially latched and supported by the operating end of the toner cartridge, and is not latched in the circumferential direction, allowing smooth rotation.

Furthermore, when taking out an old toner cartridge for which toner supply has been completed, the bag is automatically stretched out from the folded state while being taken out, and when the bag is fully stretched, the other end of the bag is removed from the cartridge mounting section. In this state, since the bag encloses the toner cartridge over its entire length, toner leakage is completely prevented, and the conventional problem of staining hands and surrounding areas is eliminated.

〔Example〕

The present invention will now be described in detail with reference to FIGS. 1 to 4.

FIG. 1 is a perspective view showing a toner cartridge to which the present invention is applied, and in the figure, 21 is a toner cartridge, and 22 is a second toner cartridge.
The flange 23 is a bag made of polyethylene film. The bag 23 has a length sufficient to completely enclose the toner cartridge 21.

The toner cartridge 21 includes an opening 24 and an operating section 25, and the operating section 25 is provided with a handle 26 and a first flange 27.

The second flange 22 fits around the outer periphery of the toner cartridge 21, and the bag 23 is provided between the second flange 22 and the first flange 27.

One end of the bag 23 is axially engaged and supported by a flange 27, and the other end of the bag 23 is fixed to the flange 22 with an adhesive or the like. The way in which one end of the bag 23 is supported is as shown in FIG. is locked in the axial direction (horizontal direction in FIG. 2). The bag 23 is folded into a bellows shape, and in this state, the first bag 23 is folded into a bellows shape. Second flange 27°22
is partially fixed with paper tape or the like to prevent the bag 23 from stretching. A Velcro tape is attached to the back side of the flange 22 (the side opposite to the adhesive side of the bag 23), and a Velcro tape (removably attached) is attached to the corresponding part of the cartridge mounting portion of the developing machine into which the toner cartridge 21 is attached. One is male and the other is female) are attached.

Next, how to use the toner cartridge having such a structure will be explained with reference to FIG. In addition, in FIG. 3, the ring plate 28 and the Velcro tape are omitted.

When replenishing toner, a new toner cartridge 21 is installed in the cartridge installation section 7 of the developing machine from which the old toner cartridge was taken out, as shown in FIG. It is attached to the Velcro tape on the attachment part 7. This attachment is carried out smoothly because the flanges 22 and 27 are fixed with paper tape or the like while the bag 23 is folded into a bellows shape.

Next, as shown in FIG. 3(b), the toner cartridge 2
1 by 180° and force is applied, the flange 22.
The tape fixing the bag 27 breaks, the toner cartridge 21 rotates 180", and the toner falls into the hopper of the developing tank. In this case, the ring plate 28 to which one end of the bag 23 is fixed and the flange 27 are circular. Since relative movement is possible in the circumferential direction, rotation is performed smoothly.

When the toner cartridge 21 installed in this manner is rotated 180" in the reverse direction when replacing the cartridge and then taken out from the cartridge installation section 7, the folded bag 2
The toner cartridge 21 is taken out as the toner cartridge 3 is stretched, and in the state shown in FIG.

When the toner cartridge 21 is further pulled out from this state, the Velcro tapes are released from each other and removal is completed. In this case, the toner cartridge 21 is
3, it is possible to prevent the toner from staining the hands and surroundings, which has been a problem in the past.

In addition, the flange 22 is divided into two parts as shown in Fig. 1, and the Velcro tape on each divided part is divided into male and female parts (one is male and the other is female), and the Velcro tape on the cartridge storage side is divided into two parts. By adapting to this, each divided portion of the flange 22 can be stuck together using Velcro tape as shown in Figure 4 when the cartridge is removed, making it possible to create an even more effective effect. It is. In this case, the flange 22 is 2
It is also possible to leave it undivided so that it can be divided into two later. The removed toner cartridge can be handled, such as incinerated, without scattering toner powder.

In the above explanation, an example is described in which Velcro tape is used as a means of joining the flange 22 and the cartridge mounting part side.
You may also apply removable tape to it. In this case, remove the tape when replacing the cartridge.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to collect used toner cartridges without staining hands or surroundings.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a toner cartridge according to an embodiment of the present invention, FIG.
[C1 is an explanatory diagram of how to use the same toner cartridge, FIG. 4 is a perspective view showing the collected state of the used cartridge, FIG. 5 is a perspective view showing a conventional toner cartridge, and FIG. 6 is a diagram showing toner replenishment using the toner cartridge. In the figure, 7 is a cartridge mounting part, 21 is a toner cartridge, 22, 27 is a flange, 23 is a bag, 24 is an opening, 25 is an operation part, 28 is a ring plate, and 29 is a front view showing a developing machine. This is the clamp part.

Claims (1)

[Scope of Claims] A toner cartridge configured to be installed in a cartridge mounting portion (7) of a developing machine to supply the contained toner into the developing machine, the toner cartridge having a longer length than the toner cartridge. A bag (23) that is foldably fitted around the outer periphery of the toner cartridge is provided, one end of the bag is axially latched to and supported by the operating end of the toner cartridge, and the other bag is A structure for preventing toner leakage of a toner cartridge, characterized in that a joining means is provided at an end to be removably joined to the cartridge mounting portion when the cartridge is mounted.