JPS632086A - Toner replenishing device for developing device - Google Patents

Abstract

PURPOSE:To replenish the toner of the inside of a toner cartridge to the inside of a toner container by inserting the toner cartridge into the aperture of a toner container, so that a sheet member for sealing up tightly the toner cartridge can be cut and split easily with a cutter. CONSTITUTION:On one surface of a toner cartridge 9, a rectangular drop hole which is opened on its almost whole surface is formed, and on the face of the opposite side of the drop hole 10, a flange 11 for projecting from both ends and abutting on the upper face of a toner container 2 is formed. When the flange 11 is turned upward and the toner cartridge 9 is inserted into the aperture of the toner cartridge 2, cutting edges 14, 15 of a cutter 13 cut and split a sheet member 12, and the toner 6 of a corner part in the toner cartridge 9 also drops down into the toner container 2. In such way, the sheet member 12 for closing up tightly the toner cartridge 9 is cut and split in the inside of the toner container 2, and the toner cartridge 9 itself closes the aperture 8 of the toner container 2, therefore, at the time of replenishing the toner 6, the toner 6 is not scattered to the outside, and a hand is not stained as well.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a toner replenishing device for a developing device used in an electrophotographic apparatus.

2. Description of the Related Art Conventionally, as shown in FIG. 5, a charged layer is formed on the outer peripheral surface of the photoreceptor 51 by a charging charger 52 during one rotation of the photoreceptor 51, and a beam from a light source 53a is applied to this charged layer. scanning to form an electrostatic latent image, this electrostatic latent image is visualized by a developing device 54 having a magnetic roller 53,
This visualized toner image is transferred to a paper 56 by a transfer charger 55, and the paper 56 after transfer is transferred to a fixing roller 56.
A dry type electrophotographic device in which the image is fixed by being held between the two rollers is widely used. As shown in FIG. 6, there is a replenishment means for opening the lid 59 of the toner container 58 and replenishing the toner container 58 with toner 61 from the bottle 6o.

As another toner replenishing means, as shown in FIGS. 7 to 9, a tape 63 is adhered to the opening surface of the toner cartridge 62 containing the toner 61 to prevent leakage of the toner 61. Fold back this tape 63
with the tape 6 facing the opening surface of the toner container 58.
There is one in which the toner cartridge 62 is peeled off from the opening surface of the toner cartridge 62 by pulling 3, and the toner 61 inside is dropped into the toner container 58.

Problems to be Solved by the Invention However, in the case shown in FIGS. 5 and 6, the toner 61 scatters to the outside from the opening surface of the toner container 58 when toner is replenished, which is extremely unsanitary. Furthermore, in the case shown in FIGS. 7 to 9, the tape 63 cannot be peeled off unless the toner cartridge 62 is pressed against the toner container 58 with a strong force and the tape 63 is pulled with a strong force. If the cartridge 62 is not attached to the toner container 58, the top surface of the toner container 58 will not be closed, which has the drawback of increasing the overall height.

A toner cartridge is provided with a toner cartridge in which toner is stored inside the toner cartridge, a drop hole that opens substantially over the entire surface of the toner cartridge, and a drop hole that is sealed with a sheet member, and an upper surface of the toner container. A developing device is provided in which an opening into which the toner cartridge is inserted is formed, and a cutter having a cutting blade at an upper edge is fixedly mounted inside the toner container.

Operation: Therefore, by inserting the toner cartridge into the opening of the toner container, the sheet member is cut by the cutter, and the toner inside the toner cartridge is replenished into the toner container.

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 4. 1 is a developing device, and this developing device 1 includes a toner container 2, a magnet roller 3, and a blade 4. An arc-shaped window 5 into which the magnet roller 3 is fitted is formed on one side of the toner container 2 . The blade 4 regulates the thickness of the layer of toner 6 supplied to the photoreceptor facing the magnet roller 3. Furthermore, protrusions 7 are formed on both sides of the toner container 2 to be held by a frame (not shown) of an electrophotographic apparatus. Furthermore, a rectangular opening 8 is formed on the top surface of the toner container 2 .

Next, a toner cartridge 9 containing the toner 6 is provided. A rectangular drop hole 10 is formed on one surface of the toner cartridge 9 and is open to substantially the entire surface thereof.
A collar 11 is formed on the opposite side of the drop hole 10 so as to protrude from both ends and come into contact with the upper surface of the toner container 2 . A synthetic resin sheet member 12 that is strong but easy to cut with a sharp cutter is adhered to the periphery of the drop hole 1°, thereby sealing the toner 6 stored inside. . The length of the toner cartridge 9 is approximately equal to the length of the opening 8, and the width of the toner cartridge 9 is determined to be approximately equal to the width of the opening 8 on the side of the collar 11, and gradually narrows toward the side of the drop hole 10.

Therefore, a cutter 13 is fixedly provided inside the toner container 2. This cutter 13 has a cutting blade 14 arranged on a straight line corresponding to the longitudinal center of the drop hole 10, and a cutting blade 15 that is perpendicular to the cutting blade 14 and corresponds to both edges of the drop hole 10. However, the cutting blade 14 is partially provided with a protruding blade 16.
is formed. The cutting edge 15 has a sharp shape at the center.

Furthermore, mounting pieces 17 are formed at both ends of the cutter 13 and are fixed to both internal side surfaces of the toner container 2 .

In this configuration, the toner cartridge 9 is inserted into the opening of the toner container 2 with the collar 11 facing upward. At this time, the cutting blades 14.15 of the cutter 13 cut the sheet member 12. In the shape of the cutter 13 in this embodiment, as shown in FIG. 4, the cutting blade 14 cuts the central part of the drop hole 10 in the longitudinal direction, and the cutter blade 15 cuts both ends of the drop hole 10.

Therefore, the toner 6 in the corner of the toner cartridge 9
The toner also falls from the drop hole 10 into the toner container 2 .

In this way, the sheet member 12 that seals the toner cartridge 9 is torn apart inside the toner container 2, and the toner cartridge 9 itself closes the opening 8 of the toner container 2, so that the toner 6 is scattered outside when the toner 6 is replenished. There's nothing to do and nothing to get your hands dirty. The sheet member 12 can be easily cut by the cutter 13 without forcing the toner cartridge 9 into the opening 8 with strong force.

Furthermore, since the toner cartridge 9 is inserted into the toner container 2, it does not protrude significantly from the top surface of the toner container 2, so that the overall height can be reduced.

Effects of the Invention Since the present invention has R1 as described above, by inserting the toner cartridge into the opening of the toner container, the sheet member that seals the toner cartridge can be easily cut with a cutter, thereby allowing the toner to be removed. The toner inside the cartridge can be replenished into the toner container, thus preventing the toner from scattering to the outside of the toner container, and by inserting the toner cartridge into the toner container, the overall height can be reduced. It has the effect of being able to lower the

[Brief explanation of drawings]

Figures 1 to 4 show an embodiment of the present invention, in which Figure 1 is an exploded perspective view, Figure 2 is a vertical side view, Figure 3 is a vertical front view, and Figure 4 shows a toner cartridge. FIGS. 5 and 6 are perspective views showing the cut state of the sheet member when viewed from below; FIGS.
The figures show one example of the conventional art. Fig. 5 is a side view of only the toner container in cross section, Fig. 6 is a perspective view of the toner container, and Figs. 7 to 9 show other conventional examples. 7 is a perspective view of the toner cartridge, FIG. 8 is a longitudinal sectional front view of the toner cartridge, and FIG. 9 is a perspective view of the toner cartridge installed in the toner container. 1...Developer, 2...Toner container, 6...Toner, 8
...Opening, 9...Toner cartridge, 10...Drop hole, 12...Sheet member, 13...Cutter, 14
．． 15...cutting blade

Claims (1)

[Scope of Claims] 1. A toner cartridge in which toner is stored inside and a drop hole opening substantially over the entire surface of the toner cartridge is formed, and the drop hole is sealed with a sheet member; A toner replenishing device for a developing device, comprising a developing device having an opening into which the toner cartridge is inserted and a cutter having a cutting blade at an upper edge fixedly mounted inside the toner container. 2. A cutting blade located on a straight line along the longitudinal direction of the drop hole;
2. The toner replenishing device for a developing device according to claim 1, further comprising a cutter having cutting blades extending perpendicularly to the cutting blade and extending along both ends of the drop hole.