CN221039804U

CN221039804U - Powder conveying structure, imaging module and printer

Info

Publication number: CN221039804U
Application number: CN202322973169.2U
Authority: CN
Inventors: 李章�; 王永辉; 欧克政
Original assignee: Zhuhai Pantum Electronics Co Ltd
Current assignee: Zhuhai Pantum Electronics Co Ltd
Priority date: 2023-11-02
Filing date: 2023-11-02
Publication date: 2024-05-28
Anticipated expiration: 2033-11-02

Abstract

The utility model discloses a powder conveying structure, which comprises a frame body, a powder cylinder and a processing box, wherein the frame body provides mounting positions of the powder cylinder and the processing box; the powder cylinder is detachably arranged on the frame body and is used for accommodating powder and is provided with a powder outlet, and a first switch is arranged at the powder outlet; the processing box is detachably arranged on the frame body and is used for receiving the powder in the powder cylinder and is provided with a powder inlet; the frame body is also provided with a through hole, the through hole is positioned between the powder outlet and the powder inlet for powder to pass through, one side of the through hole, which is close to the powder outlet, is provided with a second switch, when the powder cylinder is arranged in the frame body, the first switch and the second switch are pushed away, and the powder outlet is abutted with the through hole so that the powder can be discharged; the powder inlet is provided with a third switch, and the third switch is opened when the processing box is arranged on the frame body. The utility model also discloses an imaging module and a printer. According to the utility model, the switch is arranged among the powder outlet, the through hole and the powder inlet, so that powder in the powder cylinder can sequentially pass through the powder outlet, the through hole and the powder inlet, and the condition of powder leakage can be avoided.

Description

Powder conveying structure, imaging module and printer

Technical Field

The utility model relates to a powder conveying structure, an imaging module and a printer.

Background

The imaging module of the printer is a replaceable consumable and requires a separate hermetic package for replacement. In order to facilitate the installation and transportation of consumables, a movable switch is usually arranged on the powder cylinder or the processing box, and the switch needs to be turned on during the installation. The existing switch structure is easy to leak powder in the installation process, and pollution is generated.

Disclosure of utility model

According to one aspect of the present utility model, there is provided a powder conveying structure comprising:

a frame body for providing mounting positions of the powder cylinder and the processing box;

the powder cylinder is detachably arranged on the frame body and is used for accommodating powder and is provided with a powder outlet, and a first switch is arranged at the powder outlet;

The processing box is detachably arranged on the frame body and is used for receiving the powder in the powder cylinder and is provided with a powder inlet;

The powder cylinder is arranged in the frame body, the first switch and the second switch are pushed away, and the powder outlet and the through hole are in butt joint so that the powder can be discharged;

The powder inlet is provided with a third switch, and the third switch is opened when the processing box is mounted on the frame body. According to the powder conveying structure, the first switch is arranged at the powder outlet, the third switch is arranged at the powder inlet, and the through hole is formed in the frame body and the second switch is arranged at the through hole, so that the first switch and the second switch are mutually interacted to be opened when the powder cylinder is arranged on the frame body, and the third switch is opened when the processing box is arranged on the frame body, so that powder in the powder cylinder can sequentially pass through the powder outlet, the through hole and the powder inlet, and the condition of powder leakage can be avoided.

In some embodiments, the frame comprises a slideway for limiting the direction of the powder cylinder installation path, and the through hole is formed in the slideway;

Along the installation direction of the powder cylinder, a first abutting part is arranged at the front end of the powder cylinder, a second abutting part and a third abutting part are arranged at the through hole, when the powder cylinder moves along the installation direction, the first abutting part pushes the second switch, and the second abutting part pushes the first switch;

When the process cartridge moves in the mounting direction, the third abutting portion pushes the third switch open.

In some embodiments, the first abutment portion abuts the second switch for a time earlier than the second abutment portion abuts the first switch along the mounting path of the powder cartridge.

In some embodiments, the powder outlet is formed in the lower surface of the powder cylinder, the powder cylinder is mounted on the upper side of the slideway, the powder inlet is formed in the upper surface of the processing box, the processing box is mounted on the lower side of the slideway, and the powder outlet, the through hole and the powder inlet are sequentially butted from top to bottom so as to establish a conveying channel of the powder between the powder cylinder and the processing box.

In some embodiments, at least one of the powder outlet and the powder inlet is provided with a removable sealing brace.

In some embodiments, the first switch is provided with a first baffle main body and a connecting part, the connecting part is used for connecting an elastic piece, so that the baffle main body can keep the powder outlet to be closed under the action of the elastic piece, and pushing the baffle main body to press the elastic piece can enable the powder outlet to be opened;

A sealing piece is arranged at one side of the through hole, which faces the powder outlet;

The front end of the first baffle body in the installation direction of the powder cylinder is provided with a protruding part, and when the first switch is opened, the protruding part pushes against the sealing piece to enable the sealing piece to be in close contact with the front end of the first baffle body.

In some embodiments, the seal includes an elastic layer surrounding an edge of the through hole, and a sliding layer covering a surface of the elastic layer in contact with a front end of the barrier body, the sliding layer for reducing frictional resistance between the first barrier body and the elastic layer.

In some embodiments, the second switch includes a second shutter body having a second protrusion thereon, and/or the third switch includes a third shutter body having a third protrusion thereon.

According to another aspect of the present utility model, there is provided an image forming module for image formation of a printer, comprising the powder transporting structure, the powder including carbon powder.

According to the imaging module, the powder conveying structure is arranged, the first switch is arranged at the powder outlet, the third switch is arranged at the powder inlet, and the through hole is formed in the frame body and the second switch is arranged at the through hole, so that the first switch and the second switch are mutually interacted to be opened when the powder cylinder is arranged on the frame body, and the third switch is opened when the processing box is arranged on the frame body, so that powder in the powder cylinder can sequentially pass through the powder outlet, the through hole and the powder inlet, and the condition of powder leakage can be avoided.

According to another aspect of the present utility model, there is provided a printer including the imaging module.

According to the printer, the imaging module is arranged to form images, the imaging module comprises a powder conveying structure, the first switch is arranged at the powder outlet, the powder inlet is provided with the third switch, the through hole is arranged on the frame body, the second switch is arranged at the through hole, so that the first switch and the second switch are interacted to be opened when the powder cylinder is arranged on the frame body, the third switch is opened when the processing box is arranged on the frame body, and powder in the powder cylinder can sequentially pass through the powder outlet, the through hole and the powder inlet, and the condition of powder leakage can be avoided.

Drawings

Fig. 1 is a perspective view of an image forming apparatus in the present utility model;

FIG. 2 is a cross-sectional view of an image forming apparatus according to the present utility model;

FIG. 3 is a cross-sectional view of an imaging module of the present utility model;

FIG. 4 is a perspective view of a powder cartridge according to the present utility model from one perspective;

FIG. 5 is a schematic view of another view angle of the powder container in the first switch-on state;

Fig. 6 is a perspective view of a process cartridge in the present utility model;

FIG. 7 is a cross-sectional view of the developing assembly of the present utility model in a fully closed state of the cover prior to installation;

FIG. 8 is a cross-sectional view of the developing assembly of the present utility model in a half-mounted state;

FIG. 9 is a cross-sectional view of the powder cartridge of the present utility model with the lid fully closed prior to installation;

FIG. 10 is a cross-sectional view of the powder cartridge of the present utility model in a half-mounted state;

FIG. 11 is a cross-sectional view of the powder cartridge and developing assembly of the present utility model in place;

FIG. 12 is a perspective view of a sealing riblet on a powder cartridge of the present utility model;

FIG. 13 is a perspective view of a seal stay on a process cartridge of the present utility model;

FIG. 14 is a perspective view of a first baffle body according to the present utility model;

FIG. 15 is a schematic view of an overflow preventing structure according to the present utility model.

In the figure: 10. an image forming apparatus; 11. a control panel; 12. an outer housing; 13. a paper feed module; 14. an imaging module; 15. a laser scanning module; 16. a fixing module; 17. a slideway; 170. a through hole; 171. a second abutting portion; 172. a third abutting portion; 100. a powder cylinder; 101. a powder outlet; 102. a first switch; 103. a first barrier body; 104. an elastic member; 105. a connection part; 106. a protruding portion; 107. a first abutting portion; 200. a developing assembly; 201. a case body; 202. a cover body; 203. a developing roller; 204. a photosensitive drum; 205. a powder outlet knife; 206. a powder inlet; 207. a second switch; 208. a third switch; 300. a seal; 301. an elastic layer; 302. a sliding layer; 303. sealing the notch; 400. sealing the brace.

Detailed Description

The present utility model will now be described in further detail with reference to the accompanying drawings, wherein the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, either fixedly attached, detachably attached, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium.

In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The image forming apparatus (printer) 10 generally includes a control panel 11, a paper feed module 13, an image forming module 14, a laser scanning module 15, a fixing module 16, and a conveyance module, as shown in fig. 1 and 2. The control panel 11 and the host control module are responsible for the operation control of each module of the whole machine. The laser scanning module 15, after receiving the print control command, scans the image forming module 14 with laser light to form an image to be printed, and the conveying module removes a print medium (typically, paper) from the paper feeding module 13 and conveys the print medium to the image forming module 14, the image to be printed is transferred onto paper, and the conveying module continues to convey the paper with the image to the fixing module 16 for fixing, so that the image is fixed on the surface of the paper and then discharged.

The specific imaging steps comprise:

In the first step, charging is performed. The surface of the rotating photosensitive drum 204 is charged with a uniform negative charge by a corona assembly or a charging roller.

Second, writing (exposure). The laser beam carrying the digital information scans the surface of the photosensitive drum 204, the surface of the photosensitive drum 204 irradiated with the laser light from the laser scanning module 15 becomes a conductor, the electrostatic charge disappears, and an electrostatic latent image having a different potential is formed on the surface of the photosensitive drum 204.

And thirdly, developing. In the development area, the electrostatic latent image on the surface of the photosensitive drum 204 becomes a visible toner image. The developer formed by mixing the toner and the carrier is first attracted to the surface of the developing roller 203, and a uniform layer of the developer of a specific thickness is formed on the surface of the developing roller 203 under the control of the toner discharging blade 205, and the toner is charged by friction during the mixing of the toner and the carrier. The toner is vibrated on the surface of the magnet roller by the AC/DC bias and transferred to the OPC. The electrostatic latent image area on OPC attracts toner and forms a visible image from the surface.

Fourth, transfer printing. The photosensitive drum 204 carrying the image rotates and encounters the same-speed paper. The transfer roller applies a positive voltage to the back of the paper, causing negatively charged toner to be attracted to the paper.

And fifthly, fixing. The paper carrying the toner image enters the fusing module 16, and the fusing module 16 is composed of a heating roller and a pressure roller. Under the action of heat and pressure, carbon powder particles are fused into paper fibers to form a printing manuscript seen by people.

And sixthly, cleaning. Since the toner on the surface of the photosensitive drum 204 is not 100% transferred to the paper, the residual toner on the OPC is removed by a cleaning blade and collected in a waste bin.

Seventh, discharging. The surface of the photosensitive drum 204 after transfer is still charged with a small amount of static electricity, and the surface is subjected to static electricity elimination by a charging roller for the next development cycle.

Structurally, the image forming apparatus 10 includes an outer casing 12, the above-described paper feeding module 13, an image forming module 14, a laser scanning module 15, a fixing module 16, and a conveying module mounted in the outer casing 12. The casing 12 is internally provided with a frame body which is a skeleton part of the whole machine and is used for installing, positioning and connecting the various module components.

Typically, the imaging module 14 is removably mounted within the housing. In one possible embodiment, as shown in FIG. 2, imaging module 14 is comprised of two parts, a powder supply assembly (powder cartridge 100) and a developing assembly 200 (process cartridge).

As shown in the cross-sectional view of the imaging module 14 shown in fig. 3, the toner supply assembly is used to store and supply toner, the process cartridge stores a carrier therein, and toner is discharged from the toner supply assembly through the toner inlet 206 into the developing assembly 200.

The stirring screw is provided in the powder feeding unit, and is driven to rotate in the powder cylinder 100, so that the toner is prevented from adhering to the inner wall of the powder feeding unit and can be smoothly discharged from the powder outlet 101.

Also provided in the developing assembly 200 are a stirring device, a developing roller 203, a powder discharging blade 205, and a photosensitive drum 204. The stirring device sufficiently mixes the toner and the carrier into the developer. The photosensitive drum 204 and the developing roller 203 are parallel in rotation axis and opposite in rotation direction, and the toner discharging blade 205 is disposed along the axis direction of the developing roller 203 and held at a position forming a gap of a fixed width with the surface of the developing roller 203. The charged surface of the developing roller 203 can absorb developer to form a developer layer, the thickness of the developer layer is uneven under the untreated condition, and the developer layer is uniformly thick after being subjected to gap treatment on the surfaces of the powder discharging knife 205 and the developing roller 203. The surface of the photosensitive drum 204 is scanned by the laser scanning unit to form an electrostatic latent image, that is, an area where an image is formed is charged, and the area is adjacent to the developer layer on the surface of the developing roller 203, and then the toner is adsorbed in the electrostatic area, so that an image is formed on the surface of the photosensitive drum 204.

The process cartridge is a box-like structure in which a cavity is formed inside, and inside which internal devices such as a stirring device, a developing roller 203, a photosensitive drum 204, a doctor blade 205, and the like are mounted. In one embodiment, the process cartridge is composed of a cartridge body 201 with an opening and a cover 202, the developing roller 203, the powder discharging blade 205 and the stirring device are all installed in the cartridge body 201, and the cover 202 closes the opening of the cartridge body 201 to make the inside a relatively sealed cavity. The junction of the cover 202 and the box 201 is glued or closed by a clamping groove structure, and optionally, a ring of sealing sponge is also provided along the inner edge of the glue/clamping groove junction to prevent the carrier from leaking from the junction.

The present utility model relates to an image forming module 14 of an image forming apparatus 10, in which a cartridge 100 as a powder supply unit and a process cartridge as a developing unit 200 are two independent members, and the cartridge 100 and the process cartridge are detachably mounted in a frame, respectively. Since both the powder cartridge 100 and the process cartridge store the powder-like objects therein, there is a problem of powder leakage during replacement or installation, the present utility model provides a transfer structure that reduces powder leakage. The powder cartridge 100 and the process cartridge are detachably mounted to the frame. The frame body provides the installation position of the powder cylinder 100 and the processing box, and is provided with a slideway 17 for restraining the installation track of the powder cylinder 100, the slideway 17 is simultaneously provided with a through hole 170, and the through hole 170 is positioned between the powder outlet 101 and the powder inlet 206 for powder to pass through.

Further, a first switch 102 is provided at the outlet 101 of the cartridge 100, a third switch 208 is provided at the inlet 206 of the cartridge, and a second switch 207 is provided on the side of the through-hole 170 of the chute 17 near the inlet 206 for the purpose of cooperating with the steps of equipment transportation, packaging, and user installation. When not installed in the apparatus, the first switch 102 seals the powder outlet 101, the second switch 207 blocks the communication between the through holes 170, and the third switch 208 seals the powder inlet 206.

In one possible embodiment, the powder cartridge 100 moves along the upper side of the chute 17, the process cartridge is disposed on the lower side of the chute 17, the powder outlet 101 is disposed toward the process cartridge at the bottom of the powder cartridge 100, and the corresponding powder inlet 206 is disposed opposite the powder outlet 101 at the top of the process cartridge. The through hole 170 is formed in the slide 17 at a position opposite to the powder outlet 101 and the powder inlet 206. The powder inlet 206, the through hole 170 and the powder inlet 206 are sequentially communicated from top to bottom to form a transfer passage of the toner from the powder cartridge 100 to the process cartridge.

The structure of the powder container 100 in two viewing angles is shown in fig. 4 and 5, respectively, and fig. 5 shows a schematic diagram of the structure of the powder container 100 in the opened state of the first switch 102. The powder cartridge 100 has a box-like body with a cavity formed therein to contain powder. The powder within the cartridge 100 is typically a toner, i.e., carbon powder, and may in some embodiments also contain minor amounts of other components such as binders. The box-shaped main body is provided with a powder outlet 101, and a first switch 102 is arranged at the powder outlet 101.

The powder outlet 101 is provided on the lower bottom surface of the installation position of the powder cylinder 100, and when the first switch 102 is turned on, the powder in the powder cylinder 100 can flow out from the powder outlet 101 at the bottom under the action of gravity.

The structure of the process cartridge is shown in fig. 6. The powder outlet 101 is arranged on the lower surface of the powder cylinder 100, the powder cylinder 100 is arranged on the upper side of the slideway 17, the powder inlet 206 is arranged on the upper surface of the processing box, the processing box is arranged on the lower side of the slideway 17, and the powder outlet 101, the through hole 170 and the powder inlet 206 are sequentially butted from top to bottom so as to establish a powder conveying channel between the powder cylinder 100 and the processing box.

A second abutting portion 171 and a third abutting portion 172 are provided near the through hole 170. When the powder cylinder 100 is mounted, the first abutting part 107 abuts against the second switch 207 and the second abutting part 171 abuts against the first switch 102, so that the first switch 102 and the second switch 207 are both opened, the powder outlet 101 is communicated with the powder inlet 206 through the through hole 170, so that the carbon powder in the powder cylinder 100 can sequentially pass through the powder outlet 101, the through hole 170 and the powder inlet 206 to enter the developing box, the opening direction of the third switch 208 is opposite to the mounting direction of the developing box, the third switch 208 is pushed forward when the developing box is mounted, and the third switch 208 is blocked by the third abutting part 172 to move backwards relative to the developing box to be opened. So that the carbon powder in the powder cylinder 100 can pass through the powder outlet 101, the through hole 170 and the powder inlet 206 in sequence, and the condition of carbon powder leakage can be avoided.

The opening principle of the first switch 102, the second switch 207 and the third switch 208 described above is similar. Taking the communication between the first switch 102 and the through hole 170 as an example, the first switch 102 has a first baffle body 103 and a first connection portion 105, where the first connection portion 105 is used to connect with the first elastic member 104, so that the first baffle body 103 can keep the powder outlet 101 closed under the action of the first elastic member 104, and pushing the first baffle body 103 to press the first elastic member 104 can make the powder outlet 101 open.

In particular, the first elastic member 104 is preferably a spring, but may also be a torsion spring, a spring piece, elastic rubber, elastic sponge, or the like.

Correspondingly, a seal 300 is provided at the through hole 170. The seal 300 includes an elastic layer 301 and a sliding layer 302, the elastic layer 301 surrounds the edge of the through hole 170, the sliding layer 302 covers the surface of the elastic layer 301 to contact the first shutter body 103, and the sliding layer 302 is used for reducing friction resistance between the first shutter body 103 and the elastic layer 301.

Specifically, the elastic layer 301 is preferably elastic foam.

More specifically, the sliding layer 302 and the elastic layer 301 are provided with sealing notches 303 at positions corresponding to the through holes 170, the sealing notches 303 are irregularly shaped, and two sides of the front end plane of the first baffle body 103 tangent to the sealing notches 303 have included angles which are not parallel to each other, so that when the first baffle body 103 is closed, since the carbon powder is subjected to forces in two non-perpendicular directions, the carbon powder moves along the vicinity of the acute angle side of the included angles, and is not easy to block the sealing notches 303.

The shape of the sealing notch 303 may be a parallelogram, a polygon, or the like.

Optionally, the caliber of the sealing notch 303 is smaller than the caliber of the powder outlet 101, the through hole 170 or the powder inlet 206, so that carbon powder can be prevented from entering the elastic foam.

In this embodiment, the outer edges of the powder outlet 101, the through hole 170 and the powder inlet 206 are provided with sealing members 300, and the sealing members 300 fill up gaps between the powder outlet 101 and the first switch 102, between the first switch 102 and the through hole 170, between the second switch 207 and the through hole 170, and between the third switch 208 and the powder inlet 206, so as to prevent powder from scattering from the gaps.

In one embodiment, the process cartridge is pre-installed in the device at the factory of the device, and the powder cartridge 100 is not installed with the device at the factory of the device and is individually packaged. At this time, the powder inlet 206 is opened and communicates with the through hole 170 in the housing. To prevent exposure of the interior of the cartridge and leakage of the carrier within the cartridge, the second switch 207 on the through-hole 170 is closed when the cartridge 100 is not installed, and communication is established only when the first switch 102 and the second switch 207 are simultaneously opened when the cartridge 100 is also installed in the apparatus, and the passage of powder within the cartridge 100 into the cartridge.

Fig. 7 and 8 show the process of mounting the cartridge, fig. 9 to 11 show the process of mounting the cartridge 100, and fig. 11 shows a state in which the cartridge 100 and the cartridge are all mounted. In fig. 7 to 11, only the relevant structure at the powder inlet 206 is shown in cross section due to the asymmetry of the process cartridge structure.

In the state shown in fig. 7, the process cartridge moves in the left-to-right direction in the drawing on the underside of the chute 17, and at this time, the third switch 208 covers the powder inlet 206, and at this time, the cartridge 100 is not mounted, and the second switch 207 also covers the through hole 170 to block the passage.

As shown in fig. 8, the cartridge continues to move rightward, and when passing the third abutting portion 172, the third switch 208 is abutted against, kept at this position, and no longer moves forward, and the powder inlet 206 is gradually exposed as the cartridge continues to move forward, and the powder inlet 206 is gradually opened to the cartridge mounting position shown in fig. 9, and the powder inlet 206 abuts against the lower end of the through hole 170 when mounting is completed.

As shown in fig. 9, after the process cartridge is mounted, the powder cartridge 100 starts to be mounted. The powder cartridge 100 moves along the path constrained by the slide 17 and passes the second abutting portion 171, and the first abutting portion 107 at the front end of the powder cartridge 100 pushes the second switch 207 and causes the second switch 207 to move with the powder cartridge 100, and the through hole 170 is also gradually exposed with the movement of the second switch 207. The powder cylinder 100 moves forward to the state shown in fig. 10, the powder cylinder 100 moves along the path restrained by the slideway 17 and passes the second abutting part 171, the first switch 102 is stopped at the second abutting part 171 and does not advance any more, the powder outlet 101 is gradually exposed in the advancing process of the powder cylinder 100, and finally, the powder outlet 101 and the through hole 170 are both opened, and the installation process is completed. At this time, the first switch 102, the second switch 207 and the third switch 208 are all turned on, and the powder outlet 101, the through hole 170 and the powder inlet 206 are communicated from top to bottom as shown in fig. 11.

In the moving state shown in fig. 9 and 10, during the installation of the powder cylinder 100, the second switch 207 at the through hole 170 is opened slightly earlier than the first switch 102, so that the powder flowing out of the powder outlet 101 through the powder flow channel second switch 207 can be avoided before the powder cylinder 100 is installed, and the powder can be ensured to smoothly pass through the through hole 170 after flowing out of the powder outlet 101, and cannot be accumulated on the slideway 17 due to untimely opening of the second switch 207.

In one possible embodiment, as shown in fig. 12, a sealing stay 400 is provided at the powder outlet 101. The sealing stay 400 keeps the powder outlet 101 in a sealed state, and even if the first switch 102 is opened, the powder outlet 101 is not exposed, and the powder in the powder cylinder 100 is not discharged. Further, as shown in fig. 13, the same sealing stay 400 may be provided at the powder inlet 206. The sealing brace 400 can be used as a safety device when the powder cylinder 100 and the processing box are used for packaging consumable single products.

The above describes in detail the manner in which the cartridge 100, the frame chute 17, and the process cartridge establish the toner conveying path. In the above process, in order to further improve the sealing performance, the present utility model also relates to an anti-overflow structure provided on a switch, the structure of which is shown in fig. 14.

The overflow preventing structure may be provided at the powder inlet 206, the through hole 170 and the powder outlet 101 to prevent powder leakage.

As shown in fig. 14 and 15, the front end of the first shutter body 103 in the mounting direction of the powder cartridge 100 is provided with a protruding portion 106. When the front end of the first switch 102 is abutted by the second abutment portion 171, a certain gap may exist between the front end of the first shutter body 103 and the seal 300. The protrusion 106 serves to reduce a gap between the first barrier body 103 and the seal 300. Further, the protrusion 106 presses the seal 300, so that the seal 300 is compressively deformed at a position where the front end of the first barrier body 103 contacts, thereby improving sealability.

Optionally, the second switch 207 and the third switch 208 have the same function as the protruding portion 106.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims

1. A powder delivery structure comprising:

The powder inlet is provided with a third switch, and the third switch is opened when the processing box is mounted on the frame body.

2. The powder conveying structure according to claim 1, wherein the frame body includes a slide rail for restricting a direction of the powder cartridge installation path, the through hole being opened on the slide rail;

3. The powder conveying structure of claim 2, wherein a time at which the first abutting portion abuts against the second switch is earlier than a time at which the second abutting portion abuts against the first switch along the installation path of the powder cartridge.

4. The powder transporting structure of claim 2, wherein the powder outlet is provided at a lower surface of the powder cylinder, the powder cylinder is mounted at an upper side of the slide, the powder inlet is provided at an upper surface of the process cartridge, the process cartridge is mounted at a lower side of the slide, and the powder outlet, the through hole and the powder inlet are sequentially butted from top to bottom to establish the transporting passage of the powder between the powder cylinder and the process cartridge.

5. The powder conveying structure of claim 4, wherein at least one of the powder outlet and the powder inlet is provided with a removable sealing brace.

6. The powder conveying structure as claimed in any one of claims 1 to 5, wherein the first switch has a first shutter body and a connecting portion for connecting an elastic member so that the shutter body can keep the powder outlet closed under the action of the elastic member, and pushing the shutter body to press the elastic member can cause the powder outlet to open;

7. The powder conveying structure of claim 6, wherein the seal member includes an elastic layer surrounding an edge of the through hole, and a sliding layer covering a surface of the elastic layer in contact with a front end of the shutter body, the sliding layer for reducing frictional resistance between the first shutter body and the elastic layer.

8. The powder delivery structure of claim 6, wherein the second switch includes a second shutter body having a second protrusion thereon, and/or the third switch includes a third shutter body having a third protrusion thereon.

9. An image forming module for image formation of a printer, comprising the powder conveying structure according to any one of claims 1 to 8, wherein the powder comprises carbon powder.

10. A printer comprising the imaging module of claim 9.