WO2007054016A1

WO2007054016A1 - Toner container

Info

Publication number: WO2007054016A1
Application number: PCT/CN2006/002975
Authority: WO
Inventors: Benyou Jin; Qingguo Xiao; Yongjun Zhang; Long Lin
Original assignee: Print-Rite Technology Development Co., Ltd Of Zhuhai
Priority date: 2005-11-09
Filing date: 2006-11-07
Publication date: 2007-05-18
Also published as: CN2876841Y

Abstract

A toner container including: a body having a first end and a second end; a toner outlet between the first end and the second end; a lid for opening and closing the toner outlet; a limit convex disposed on the second end of the body; and a limit concave disposed on the end of the lid for engaging with the limit convex. The toner container according to the present invention is simply constructed and has a good sealing characteristic.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is based on a Chinese patent application No. 200520133808. The present invention relates to a toner cartridge for a developing device for a laser printer, and more particularly to a toner cartridge having a shield rotation limit structure. BACKGROUND OF THE INVENTION In a laser printer developing device, a toner cartridge is detachably mounted in a laser printer developing device, and toner passes through a powder discharging port of the toner cartridge into a developing chamber of the developing device, and then passes through a developing chamber in the developing chamber. The roller is transferred to the photosensitive drum for development, and finally the imaging on the medium is completed. Wherein, the developing chamber of the developing device has a powder receiving port, and the powder receiving port has a cover that can rotate relative to the powder receiving port, and the opening and closing of the powder receiving port is realized by the sliding of the cover.

US Patent No. 5,630,178 discloses a toner cartridge suitable for use in the above-described laser printer developing device, comprising a toner cartridge having a first end and a second end, and a cartridge located between the first end and the second end of the cartridge A powder mouth; a shroud that is rotatably mounted on the casing to open and close the powder outlet when the casing is rotated; and a pair of projections at each end of the casing adjacent to both ends of the casing. On the insertion end side of the toner cartridge, an end portion of the shield is provided with an extending portion, and the extending portion is provided with a locking groove which cooperates with a protrusion on the surface of the casing to lock the shield in the powder outlet closed position To prevent toner leakage during transportation. When the user inserts the toner cartridge into the developing device, the extended portion cooperates with an unlocking projection in the developing device, forcing the extending portion to be bent away from the casing, thereby disengaging the locking groove from the projection on the surface of the casing. When the user can push the box to rotate, the two pairs of the bumps distributed on the box drive the cover in the developing device to rotate, thereby opening the powder receiving port of the developing device. In the above process, the shield is rotated relative to the casing, so that the powder outlet of the toner cartridge can be opened at the same time. In order to prevent toner leakage, a sealing sponge is distributed around the powder outlet of the above-mentioned toner cartridge, and the sealing sponge is compressed by the inner surface of the protective cover and the outer surface of the powder outlet of the casing to achieve sealing.

1

Confirmation During the working process of the toner cartridge, the casing rotates relative to the shroud, but the powdery opening of the developing device and the powder discharging port of the toner cartridge cannot be completely opened or completely closed due to the fact that the casing is not rotated or excessively rotated. Therefore, the smooth supply of the developer cannot be ensured, and the toner is easily leaked and the surrounding environment is soiled. To this end, the Applicant has employed a limit projection on the circumferential surface of the end of the casing to slide through a locking groove on the circumferential surface of the shield to restrict the opening of the shroud at the powder outlet. Turning the rotation between positions (this technical solution has been proposed in another patent application filed by the present applicant). However, since the circumferential wall of the shield is very thin and is easily squeezed during installation and storage, opening the finite slot on the circumferential wall thereof may cause deformation of the shield and affect the relative rotation between the shield and the casing. In addition, due to the size relationship of the developing device, the extending portion of the shroud is close to the shroud compression sealing sponge region, about 30 ,, so that when the locking through hole on the extending portion of the shroud is separated from the protrusion on the casing, The deformed state of the extended portion of the shield extends to the inner surface of the shroud compression sealing sponge region, so that the gap between the inner surface of the shroud and the outer surface of the casing is increased, which affects the reliability and compression of the sealing sponge. Consistency, which in turn leads to toner leakage. SUMMARY OF THE INVENTION It is a primary object of the present invention to provide a toner cartridge that allows the shield to be accurately seated during an open/closed condition transition; another object of the present invention is to provide a cartridge and a shield 3⁄4. Easy to lock and unlock toner

^τι ο In order to achieve the above object, the toner cartridge of the present invention comprises a toner cartridge having a first end and a second end; a powder outlet between the first end and the second end; and a rotatable Installed on the toner cartridge body, the shroud of the powder outlet can be opened and closed; wherein the axial end surface of the second end of the casing is provided with a limiting protrusion; the axial end surface of the shroud is matched with the limiting protrusion Limit slot. A further solution is to design the limiting groove as a circular arc shape, and the central angle of the arc length is equal to the rotation angle required when the shield completely smashes/closes the powder outlet. A locking projection may be provided on the axial end surface of the second end of the casing of the toner cartridge, and a through hole matching the locking projection may be provided on the axial end surface of the shield. By matching the two, the shield can be locked at the powder outlet The position is closed to prevent the toner cartridge from being accidentally opened during transport, causing toner to leak. When the toner cartridge is mounted to the printer, the operator only needs a little force to overcome when the cover is rotated, and the lock can be unlocked to open the powder outlet of the toner cartridge. The locking and unlocking operation of the shield in the closed position of the powder outlet is easier to achieve, and the influence on the compression reliability of the sealing sponge is avoided. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic structural view of an embodiment of the present invention;

Figure 2 is a side view of an embodiment of the present invention;

Figure 3 is a cross-sectional view taken along line A-A of Figure 2;

Figure 4 is a partial enlarged view of B of Figure 3;

Figure 5 is an exploded perspective view of an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to Figs. 1 to 5, the toner cartridge 1 is composed of a casing 2 for containing toner and a shield 3 rotatably mounted to the casing 2.

The casing 2 is substantially cylindrical and can be formed by blow molding of PP plastic. A powder discharge port 6 for discharging the toner is provided between the first end 4 and the second end 5 of the casing 2. In order to prevent the box 2 at the powder outlet from being deformed, a spacer rib 6a may be added in the middle of the powder outlet 6.

The shield 3 is rotatably sleeved on the outside of the casing 2 and has an open end 7 and a closed end 8. Corresponding to the position of the powder outlet 6 of the casing 2, a window portion 9 is opened on the surface of the shield 3, and when the shield 3 is rotated around the casing 2, the powder opening can be selectively opened or closed by the window portion 9. 6.

On the circumferential surface of the shield 3, a pair of connecting projections 10 are provided, each pair of connecting projections 10 being composed of opposing two portions 10a, 10b. In the present embodiment, the connecting projections 10 are two pairs, the positions of which are set such that when the toner cartridge 1 is not mounted to the developing device, the two pairs of connecting projections 10 respectively face the two powder discharging ports 6 of the casing 2 End, and the opposite two portions 10a, 10b of each pair of connecting protrusions 10 are exactly listed Both sides of the powder mouth 6. Thereby, while the rotary shroud 3 opens/closes the powder discharge port 6 of the toner cartridge 1, the attachment projection 10 can move the cover of the developing device together, thereby opening/closing the powder receiving port of the developing device.

In order to prevent the toner from leaking, a sealing sponge (not shown) is distributed around the powder outlet 6, and the sealing sponge can be squeezed through the inner surface of the shield 3 and the outer surface around the powder outlet 6 of the casing. The seal at the 6th mouth. The second end 5 of the casing 2 is open and sealed by a sealing cover 11. A limit projection 12 is provided on the axial end face 14 of the sealing cover. On the axial end face 15 of the shield 3, a limiting groove 13 is provided corresponding to the limiting projection 12, and the limiting projection 12 is slidably engaged in the limiting groove 13. Since the limiting groove 13 is substantially curved, the central angle of the arc length corresponds to the rotation angle required when the shield 3 completely opens/closes the powder outlet 6, so that the rotation of the shield 3 relative to the casing 2 is The restriction is made between the open and closed positions of the powder outlet, and the shield 3 is prevented from rotating in place or excessively rotated when the powder outlet 6 and the developer receiving port are opened/closed.

In this embodiment, the limiting protrusions 12 and the limiting slots 13 are respectively two. In the present embodiment, the limiting projection 12 has a hook shape, and the hook portion thereof cooperates with the limiting groove 13, so that the shield 3 can be prevented from moving relative to the casing 2 in the axial direction of the casing 2. On the axial end face 14 of the sealing cover 11, a cylindrical locking projection 16 projecting from the end face 14 is provided. Corresponding to the locking projection 16, a cylindrical small through hole 17 is formed in the axial end face 15 of the shield 3. When the toner cartridge 1 is not mounted to the printer, the locking projection 16 is caught in the through hole 17, and the shield 3 can be locked in the closed position of the powder outlet 6. After the toner cartridge 1 is mounted to the printer, since the locking projection 16 only protrudes from the end surface 14, the operator only needs to rotate the shield 3 with a slight force, so that the locking projection 16 can be detached from the through hole 17, thereby releasing the protection. The locking of the cover 3 allows the shield 3 to be rotated relative to the casing 2. In this embodiment, the second end 5 of the casing 2 is open and sealed by the sealing cover 11. In fact, the second end 5 of the casing 2 can also be closed, in which case the lower limit projections 12 and the locking projections 16 are located directly on the end faces of the casing 2.

Variations based on the inventive concept are not limited to the above embodiments, and various changes are possible. It is also possible to make targeted trade-offs in the structures in the above embodiments, and to combine new implementations. These are simple. The structural changes are still within the scope of protection required by the present invention. INDUSTRIAL APPLICABILITY According to the toner cartridge of the present invention, by the cooperation of the limiting protrusion and the limiting groove, the toner opening of the toner cartridge and the opening/closing of the toner receiving port of the developing device can be accurately controlled, and at the same time, between the toner cartridge and the shield The locking is reliable and easy to unlock, and the abnormal opening of the powder outlet is avoided.

Claims

Claim

1. Toner cartridge, including

a toner cartridge having a first end and a second end;

a powder outlet between the first end and the second end;

a shield rotatably mounted on the toner cartridge to open and close the powder outlet; characterized by:

A limiting protrusion is disposed on the axial end surface of the second end of the casing; the axial end surface of the shroud is provided with a limiting groove that cooperates with the limiting protrusion.

2. The toner cartridge according to claim 1, wherein the stopper projection has a hook shape.

The toner cartridge according to claim 1 or 2, wherein: the limiting groove has a circular arc shape, and a central angle of the arc length is equal to the cover opening/closing the powder completely The angle of rotation required for the mouth.

4. The toner cartridge according to claim 1, wherein: the second end axial end surface of the casing is provided with a locking protrusion; the axial end surface of the shroud is provided with the locking protrusion. Through hole.

5. The toner cartridge according to claim 4, wherein: the locking projection has a cylindrical shape slightly higher than an axial end surface of the sealing cover.

The toner cartridge according to claim 4, wherein: the limiting groove has a circular arc shape, and a central angle of the arc length is equal to when the shield completely opens/closes the powder outlet The required angle of rotation.