JPS6241325Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a developer supply cartridge (hereinafter referred to as a cartridge) for an electrophotographic copying apparatus.

The mainstream developer for replenishment is a cartridge type sealed in a container such as a bag or bottle. Cartridges are relatively easy to handle, and when the developer is opened and poured into the replenishment section of the developing device, there is less chance of the developer being scattered or spilled.

However, in reality, toner frequently scatters when the package is opened or spills on the surrounding area during injection, staining equipment, clothes, etc.

The object of the present invention is to provide a cartridge for replenishing developer, which aims to eliminate the drawbacks of the above-mentioned conventional techniques.

The present invention is a developer cartridge of the type that is inserted into a developing device of an electrophotographic apparatus with the opening facing upward, and rotated with the opening facing downward to replenish developer from the opening. It has a guide part that keeps the cartridge in such a way that the opening is in the upper position, and a sealing member that seals the opening.The cartridge insertion side of the sealing member is folded back to form a folded part, and the length of the folded part is The sealing member is characterized in that the length is made shorter than the sealing portion, and the sealing member is opened while inserting the cartridge.

The present invention is not limited to the following embodiments, but will be described below with reference to the drawings.

FIG. 1 is an external perspective view of a first embodiment of a cartridge according to the present invention. A handle 2 for operation is provided at one end of the cartridge 1 with both ends closed. The slit-shaped opening on the circumferential surface is sealed with a paper-like seal member 3. The seal is folded back at the end opposite to the handle side (the 4th side in the insertion direction), and the first
As shown in the figure, the folded part 3b is the sealing part 3 of the opening.
It is shorter than the length a, and is long enough to be pinched and pulled when inserting the cartridge as shown in FIG. 2b. A protrusion 5, which is a guide portion, is provided on the circumference of the end portion to keep the opening of the cartridge in the upper position.

FIG. 2 is a diagram showing how the cartridge is inserted into the developing device. The protrusion 5 fits into the groove 7a in the developing device, and the cartridge 1 is inserted thereinto. This restricts the rotation of the cartridge, and it can also be supported on a cantilever by properly inserting the cartridge. Thereafter, the seal 3 is peeled off by pinching the folded end 3b of the seal and pulling the folded end 3b while inserting the cartridge. As soon as the insertion is completed, the opening 1a of the cartridge 1 is fully opened. handle 6
You can replenish developer to the developing device by rotating it 180 degrees.

FIG. 3 is a side sectional view of the developing device before developer replenishment;
FIG. 4 is a side sectional view during the above-mentioned replenishment.

The length of the groove 7a is set so that after the cartridge is securely inserted into the locked state by the protrusion 5, the restriction on rotation is released. After insertion, the developer in the cartridge can be replenished by turning the handle 2 to set the opening 1a downward.

If a stopper (not shown) is provided on which the protrusion 5 comes into contact at a position where the opening 1a faces downward when the cartridge 1 is rotated, the operator can rotate the cartridge 1 to a proper position.

According to the first embodiment, since the developer can be easily and reliably loaded into the developing device, the device and its surroundings, the body, clothes, etc. are not contaminated.

FIG. 5 is an external perspective view of the second embodiment. This is a case where a puller 10 is attached to the end of the folded back seal 3b. This puller 10 is large enough to not fit into the guide portion 7b of the cartridge 1 of the developing device. As the cartridge 1 is inserted, the puller 10 hits the developing device, and since the cartridge 1 cannot be pushed in any further, the operator
0 and push in the cartridge 1 while peeling off the seal 3.

According to this embodiment, since the seal 3 is removed after the cartridge is positioned at the optimum position in the developing device, it is possible to accidentally tilt the cartridge 1 and remove the developer T.
This is an excellent device that does not spill and stain not only the equipment but also the operator's clothes, body, floor, etc., and allows developer to be easily and reliably replenished.

According to the present invention, since the replenishment opening of the cartridge can be opened easily and reliably in the developing device using a very simple cartridge, there is no possibility of the developer being scattered outside the device and causing contamination.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a first embodiment of the cartridge according to the present invention, Fig. 2 is a diagram showing a state in which the cartridge according to the present invention is inserted into a developing device, and Fig. 3 is a side cross section of the developing device before developer replenishment. 4 is a side sectional view of the developing device in a developer supply state, and FIG. 5 is a view of a second embodiment of the cartridge according to the present invention. DESCRIPTION OF SYMBOLS 1... Cartridge, 2... Handle, 3... Seal member, 5... Protrusion, 7... Development device, 8... Development roller, 9... Photosensitive drum, 10... Pull.

Claims (1)

[Scope of Claim for Utility Model Registration] A developer cartridge of the type that is inserted into the developing device of an electrophotographic device with the opening facing upward, and then rotated with the opening facing downward and replenishing developer from the opening. It has a guide part that keeps the cartridge so that the opening is in an upward position when inserted, and a sealing member that seals the opening.The cartridge insertion side of the sealing member is folded back to form a folded part. 1. A developer cartridge characterized in that the length of the sealing member is shorter than that of the sealing portion, and the sealing member is opened while inserting the cartridge.