JPS5918452Y2 - Toner cartridge in developing section - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cartridge for supplying toner in a developing section.

Powder toner used in dry development is not fluid like liquid toner, so if the developer is pulled out and the user replenishes the toner, uneven replenishment may appear as unevenness on the copy. Moreover, the toner scatters and stains the clothes and body of the user.

Dry cartridges have been used to overcome these inconveniences, but since the tabs and the like are removed after insertion, there have been problems with toner adhering to the cartridges scattering during collection or with a complicated loading method.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a toner cartridge with a simple structure that can uniformly supply toner to a developing section without causing toner to scatter during attachment and detachment.

The present invention will be explained below with reference to illustrated embodiments.

In FIG. 1, a toner cartridge main body 1 is formed to have a cylindrical outer shape, and is configured to be able to rotate within a toner replenishing section 2 of a copying machine by rotating a knob 12, as will be described later.

The cartridge main body 1 is provided with a lid 13 that slides along its inner surface and can be opened and closed, and at the free end of the lid,
The protrusion 14 that engages with the guide groove 22 provided at the end of the partition plate 21 of the supply section 2 and the protrusion 15 that fits into the fitting part 16' provided on the opening edge of the cartridge body 1 are each integrated. It is set up protrudingly.

On the other hand, a side wall 23 of the toner replenishing section 2 of the copying machine main body is provided with a mounting edge 24 for the cartridge main body 1, and the space between the edge 24 and the end of the partition plate 21 described above constitutes a toner replenishing port.

Although not shown, in FIG. 2, the front edge of the replenishing section is attached to a front plate, and the front plate is provided with an insertion opening 26 for the cartridge body 1 as shown by a dashed line. Further, near the edge of the partition plate 21 of the opening 26, a ridge 16 of the fitting portion 16' of the cartridge opening edge is provided so that the cartridge cover 13 can be inserted and removed only when the lid 13 of the cartridge is in the closed state. A matching recess 27 is bored.

Note that reference numeral 25 in the figure indicates a leaf spring that constantly presses the cartridge 1 against the toner supply port.

Therefore, in order to load the cartridge main body 1 into the toner replenishment section 2, the recess 27 of the opening 26 provided on the front wall of the replenishment section is required.
If it is inserted in line with the protrusion 14 and ridge 16 of the lid body 13, the protrusion 14 will engage with the guide groove 22 of the partition plate 21, and the lid body 13 will be locked.

Next, when the knob 12 is rotated clockwise in the figure, the cartridge body 1 rotates, and as a result, the toner inside is evenly distributed. Open towards the supply port.

The cartridge main body 1 can be taken out by following the above-mentioned order in reverse. At this time, the reason why it is impossible to take out the main body 1 in the open state is due to the position of the ridge 16 in the open state and the recess 27 in the front wall. This can be understood from the fact that they do not match.

Note that even if the sealing means between the cartridge opening edge and the protruding end of the lid body 13 is not based on the above-mentioned fitting, the same effect can be achieved by providing a protrusion corresponding to the ridge 16. Needless to say, it will be brought about.

As described above, according to the present invention, when the toner cartridge is inserted into the toner supply section of the main body of the copying machine, the lid body is automatically locked by the fixing member of the supply section, so that by rotating the container, At the same time as the opening is opened, the internal toner is stirred, and the toner can be uniformly supplied to the entire developing section in the axial direction.

Moreover, since a protrusion is provided on a part of the circumference of the container that matches the four parts provided in the cartridge main body insertion slot on the front plate of the supply unit only when the opening is in the closed state. Toner scattering accidents can be prevented.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a perspective view, FIG. 2 is a perspective view showing a part of the supply section of the copying machine, and FIG. It is a diagram.

Claims (1)

[Scope of utility model registration request] In a toner cartridge in which a portion of the lid engages with the edges of the toner replenishment opening and the opening of the container is opened by rotating the container, the opening is closed on a portion of the circumference of the container. A toner cartridge in a developing section, characterized in that a protrusion is provided that matches a recess provided in a cartridge main body insertion opening of a replenishing section front plate only when the toner cartridge is in the state.