JPH058611Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field This invention relates to a toner cartridge for supplying toner in copying machines, printers, etc.

Prior Art Conventionally, this type of toner cartridge has been provided with a box-shaped cartridge main body with an open bottom end, and a take-up roll with both ends of a shaft pivoted on bearings formed on the sides of the box-shaped cartridge main body. There is a known type in which a sealing material affixed to the periphery of the opening is taken up by a take-up roll and peeled off from the cartridge body, and the toner contained in the cartridge body is supplied. .

In such toner cartridges, the take-up roll is rotated by attaching a handle to one end of the shaft and rotating the handle within a 360 degree range. Depending on the equipment layout, the handle may
Sometimes it is impossible to rotate 360 degrees.

One possible method is to use a ratchet handle or the like as a handle, rotate it forward and backward within a 180 degree angle range, and then rotate the take-up roll during forward rotation to wind up the sealant. In this case, the handle If the rotation of the take-up roll is not prevented during reverse rotation, the sealing material will be rewound.

This invention was made based on the above-mentioned conventional background, and has as its object to provide a toner cartridge in which, when the winding roll is rotated by rotating the handle forward or backward, the winding roll does not rotate when the handle is rotated backward.

Configuration In order to achieve the above-mentioned object, this invention is characterized in that a reversal prevention mechanism is provided on the shaft of the winding roll to allow rotation only in the winding direction.

An embodiment shown in the drawings will be described below.

As shown in FIGS. 1 to 3, reference numeral 1 denotes a toner cartridge, and a roll storage chamber 3 whose upper end is open is formed on the side of a cartridge main body 2 whose lower end is open, and a side wall 3a of this storage chamber 3. , 3b, both ends of a shaft 6 of the take-up roll 5 are pivotally supported.

The sealing material 7 is affixed to the periphery of the opening of the cartridge body 2 from the end on the take-up roll 5 side to the end on the opposite side so as to cover the opening, and is folded back at the end on the opposite side to the take-up roll 5. Taue, containment room 3
It enters the storage chamber 3 through a slot 8 in the bottom wall of the housing 3 and is wound around a take-up roll 5.

A ratchet wheel 9 having a large number of claws is provided at one end of the shaft 6 of the winding roll 5, and a claw portion 10 formed on the side wall 3b of the storage chamber 3 engages with the ratchet wheel 9. The reversal prevention mechanism allows the winding roll 5 to rotate only in the winding direction of the sealing material 7 (in the direction of the arrow in FIG. 3).

Figure 4 shows a ratchet handle 11 at the other end of the shaft 6.
The ratchet handle 11 is shown attached.
As is well known, the boss portion 12 includes a handle portion 13 and a boss portion 12 that is non-rotatably fitted onto the shaft 6.
The handle portion 13 is urged by a spring (not shown) toward the boss portion 12 so that annular claw portions 14 and 15 formed on the handle portion 13 engage with each other.

The toner cartridge 1 as described above is installed in a copying machine,
Set it in the designated position of the device such as a printer,
When the handle portion 13 is rotated 180 degrees from the horizontal position shown by the chain line in FIG. 4 to the horizontal position shown by the solid line,
The take-up roll 5 rotates, the sealing material 7 is peeled off from the cartridge body 2, and the sealing material 7 is wound onto the take-up roll 5. And handle part 13
After rotating the cartridge 180° in the opposite direction from the solid line position to the chain line position, the winding operation as described above is performed again, and by repeating this winding operation, the sealing material 7 is sequentially peeled off from the cartridge body 2, and the inside of the cartridge is removed. The toner contained in the toner is supplied to a predetermined location.

In the winding operation as described above, when the handle portion 13 is rotated in the opposite direction, a rotational force in a direction opposite to the winding direction is applied to the winding roll 5 due to the frictional force between the claw portions 14 and 15. Since the ratchet wheel 9 and the pawl portion 10 are engaged as shown in FIG. 3, the take-up roll 5 will not be reversed, and therefore the sealing material 7 will not be rewound.

The reverse rotation prevention mechanism using the ratchet wheel 9 and the pawl portion 10 is merely an example, and is not limited thereto.

Effects As described above, according to this invention, a reversal prevention mechanism that allows rotation only in the winding direction is provided on the shaft of the winding roll, so that the winding can be prevented by rotating the handle in the forward and reverse directions within a 180 degree angle range. When winding the sealant onto the take-up roll, the take-up roll does not rotate when the handle is reversed, so the sealant is not rewound.
Even if it is impossible to rotate within the angular range of degrees, the sealing material can be efficiently peeled off.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of this invention, FIG. 2 is a sectional view taken along the line - of FIG. 1, and FIG. 3 is an enlarged view taken along the line - of FIG. 1. Figure 4 is an enlarged view of the ratchet handle attached. DESCRIPTION OF SYMBOLS 1... Toner cartridge, 2... Cartridge body, 3... Roll storage chamber, 5... Take-up roll, 6... Shaft, 7... Seal material, 9... Ratchet wheel, 10... Claw portion , 12... Ratchet handle.

Claims (1)

[Scope of utility model registration request] A box-shaped cartridge body with an open bottom end, and a take-up roll having both ends of a shaft pivoted to bearings formed on the side thereof, and a sealing material affixed to the periphery of the opening of the cartridge body. In the toner cartridge, the toner cartridge is peeled off from the cartridge main body by being wound on the take-up roll, and the take-up roll is provided with a reversal prevention mechanism that allows the axis of the take-up roll to rotate only in the winding direction. A toner cartridge characterized by: