WO2020007345A1

WO2020007345A1 - Sealing assembly for toner cartridge, toner cartridge and recycling method therefor

Info

Publication number: WO2020007345A1
Application number: PCT/CN2019/094737
Authority: WO
Inventors: 杨晓锋; 陈远明
Original assignee: 珠海天威飞马打印耗材有限公司
Priority date: 2018-07-05
Filing date: 2019-07-04
Publication date: 2020-01-09
Also published as: CN108594611B; CN108594611A

Abstract

The present invention relates to the field of printing consumable items and provides a sealing assembly for a toner cartridge, a toner cartridge, and a recycling method therefor. The sealing assembly is provided at one end, close to a sealing film pulling opening, of a developer roller, a sealing fixing guide sheet is inserted into the sealing assembly, the sealing fixing guide sheet is fixedly arranged above a groove in a powder compartment surface such that a gap is formed between the sealing fixing guide sheet and the sealing assembly on the side away from the developer roller, so that a sealing film extends out of the gap and is guided outside the sealing film pulling opening opposite the gap.

Description

Sealing component for toner cartridge, toner cartridge and recycling method thereof

[0001] The present invention relates to the technical field of printing consumables, and in particular, to a sealing assembly for a toner cartridge, a toner cartridge and a recycling method thereof.

Background technique

[0002] As one of the main printing consumables in a laser printer, a toner cartridge is increasingly valued by its production and recycling operators.

[0003] A new type of toner cartridge that is currently on the market has a sealing film disposed inside the powder container, and the rotation of the stirring frame inside the powder container drives the sealing film from the powder container mouth. However, because there are no sealing film pull-out openings on the end caps on both sides of the toner cartridge, when it is recycled, a new sealing film must be installed in the powder container to seal it. Its technological operation is complicated and cumbersome. If it is not handled properly, it will easily lead to powder leakage.

[0004] At present, a side cover of another toner cartridge is provided with a sealing film pull-out opening, and the sealing film is pasted at the powder silo opening in a direction away from the sealing film pull-out opening, and then is folded back and passed through the developing roller to approach The sealing member under one end of the sealing film pull-out port is drawn out of the sealing film pull-out port, so that the sealing film can be easily detached from the powder container port by pulling the sealing film located outside the sealing film pull-out port. However, the contact surface between the sealing member under the developing roller and the powder container is a U-like surface. When the sealing film is pulled, the interaction force between the sealing film and the sealing member is large, and the sealing member and the U-shaped surface and the developing roller are The adhesion between them is not large, and it is easy to pull the seal from under the developing roller, which affects the overall use of the toner cartridge.

Summary of invention

technical problem

[0005] A first object of the present invention is to provide a sealing assembly for a toner cartridge. By using the sealing assembly, it can be ensured that the sealing assembly is not pulled out when the sealing film is pulled, thereby further stabilizing the sealing assembly against the developing roller. It can further prevent the toner in the powder container from leaking out of the position of the sealing assembly.

[0006] A second object of the present invention is to provide a toner cartridge having the above-mentioned sealing assembly for a toner cartridge.

[0007] A third object of the present invention is to provide a method for recovering the aforementioned toner cartridge.

[0008] Technical Solution [0009] In order to achieve the above-mentioned first object, the present invention provides a sealing assembly for a toner cartridge. The toner container includes a powder container, a sealing film provided at the powder outlet of the powder container, and a developing roller provided above the powder outlet. The powder container is provided with end covers on both sides, and one end cover is provided on one end cover. There is a sealing film pull-out port, the developing roller is disposed between the two end caps, the sealing assembly is disposed at an end of the developing roller near the sealing film pull-out port, the sealing assembly is in contact with the outer peripheral surface of the developing roller, and the sealing assembly The seal assembly is provided in a groove on the surface of the powder bin; a seal fixing guide piece is inserted into the seal assembly, the seal fixation guide piece is fixedly disposed above the groove, and the seal fixation guide piece and the seal assembly on the side far from the developing roller A gap is provided therebetween, and the sealing film can pass through the gap, and the gap is opposite to the sealing film pull-out opening.

[0010] In order to achieve the above-mentioned second object, the present invention provides a toner cartridge. The toner cartridge includes a powder container, a sealing film provided at the powder outlet of the powder container, and a developing device disposed above the powder outlet. An end cap is provided on both sides of the powder silo, a sealing film pull-out port is provided on one end cap, the developing roller is disposed between the two end caps, and the sealing assembly is disposed near the developing roller At one end of the pull-out port, the seal assembly is in contact with the outer peripheral surface of the developing roller, and the seal assembly is disposed in a groove on the surface of the powder container; a seal fixing guide piece is inserted into the seal component, and the seal fixing guide piece is fixedly arranged Above the groove, a gap is provided between the seal-fixing guide sheet and the seal assembly on the side remote from the developing roller, the sealing film can pass through the gap, and the gap is opposite to the sealing film pull-out opening.

[0011] A specific solution is that a first extension portion and a second extension portion are respectively provided at both ends of the sealing and fixing guide piece, and the first extension portion and the second extension portion are respectively fixed to both ends of the groove. .

[0012] Another specific solution is that the first end of the groove is provided with a first recessed portion, and the first extension of the sealing and fixing guide piece is provided with a second convex portion in cooperation with the first end of the groove; The second end of the groove is provided with a buckling portion, and the second extending portion of the sealing and fixing guide piece is provided with a buckling portion in cooperation with the second end of the groove.

[0013] Another specific solution is that the first end of the groove is provided with a first convex portion, and the first extension of the sealing and fixing guide piece is provided with a second concave portion in cooperation with the first end of the groove; The second end of the groove is provided with a buckling portion, and the second extending portion of the sealing and fixing guide piece is provided with a buckling portion in cooperation with the second end of the groove.

[0014] Yet another specific solution is that the sealing and fixing guide sheet is provided with a curved portion, a curved gap is provided between the curved portion and the sealing component on the side far from the developing roller, and the sealing film pull-out opening is provided with a curved opening, The shape of the curved opening is the same as the shape of the curved slit.

[0015] In a further solution, two ends of the bent portion of the sealing and fixing guide piece are respectively extended toward the bottom of the groove. Bend along.

[0016] A further solution is that the seal assembly includes a felt layer and a sponge layer, the felt layer is provided on the side close to the developing roller, the sponge layer is provided on the side away from the developing roller, and the seal fixing guide sheet is inserted in the Sponge layer

[0017] A still further solution is that the sealing and fixing guide sheet is made of a steel sheet, and the surface of the steel sheet is wrapped with a film.

[0018] A further solution is that the sealing and fixing guide piece is made of elastic plastic.

[0019] In order to achieve the third object described above, the present invention provides a method for recovering the toner cartridge, including: after removing the developing roller, removing the sealing and fixing guide sheet and a seal assembly near the developing roller; The sticking part of the sealing film is pasted along the powder outlet in a direction away from the pulling end of the sealing film, and then the pulling part of the sealing film is reversely folded back to the surface of the sealing component away from the developing roller; The pulling portion penetrates the sealing film pull-out port; repositions the seal fixing guide piece above the groove; places a seal assembly near the developing roller side on the seal fixing guide piece; and seals on the side close to the developing roller The developing roller is placed on the component; the powder filling cap is opened, the toner is added to the powder silo through the powder filling port, and the powder filling cap is covered again. Problem solution

The beneficial effects of the invention

Beneficial effect

[0020] The toner cartridge of the present invention is provided with a sealing component at the end of the developing roller near the sealing film pull-out opening, a sealing and fixing guide sheet is inserted into the sealing component, and the sealing film is passed through the sealing and fixing guide sheet and away from The gap between the sealing components on the developing roller side is guided outside the sealing film pull-out port. Because the sealing and fixing guide sheet is fixedly arranged above the groove, the sealing and fixing guide sheet can effectively reduce the interaction force between the sealing film and the sealing component near the developing roller. When the sealing film is pulled, it can ensure close The sealing component on the developing roller side is not pulled out, thereby stabilizing the supporting effect of the sealing component on the developing roller, and further preventing the toner in the powder container from leaking out of the position of the sealing component.

[0021] In addition, the first and second extensions are respectively provided on both ends of the sealing and fixing guide piece, so that the two ends of the sealing and fixing guide piece can be provided with portions that are fixed in cooperation with both ends of the groove.

[0022] In addition, the fitting effect between the two ends of the fixed guide piece and the two ends of the groove can be further stabilized by the fitting effect between the depression and the protrusion, and between the buckling portion and the buckling portion.

[0023] In addition, the shape of the sealing gap can be smoothly matched by the curved slot and the curved opening. Pull out from the ground to the opening of the sealing film. Compared with the traditional rectangular slit and rectangular opening design, the curved design of the two can expand the adjustment space of the sealing film at the slit and the opening of the sealing film, further reducing The interaction forces between the sealing film and the sealing and fixing guide sheet, and between the sealing film and the sealing component on the side far from the developing roller, make the sealing film be more smoothly pulled out to the sealing film pull-out port.

[0024] In addition, by forming bending edges at both ends of the bent portion of the sealing and fixing guide piece toward the bottom of the groove, the seal fixing guide piece and the seal assembly on the side away from the developing roller can be effectively extended. Bend the gap, so that the sealing film can pass smoothly between the seal fixing guide and the seal assembly on the side far from the developing roller

[0025] In addition, because the frictional resistance on the surface of the felt layer is large, the felt layer is disposed near the developing roller, which can increase the interaction force between the developing layer and the developing roller, so that the bonding between the felt layer and the developing roller is stable. . The sealing and fixing guide sheet is arranged between the sponge layers. Because the sponge layer has a certain buffering effect, the sponge layer provided on the side near the developing roller can alleviate the pressure effect of the developing roller on the sealing and fixing guide sheet. Because of its elasticity, the sponge layer has a certain adjustment space between the sealing film and the sealing and fixing guide sheet.

[0026] Moreover, the steel sheet has a strong pulling force and has toughness, so that the sealing and fixing guide sheet can withstand the gravity of the developing roller and is not easily broken. Because the side edges of the steel sheet are sharp, a film layer is provided on the surface of the steel sheet to ensure that the sealing film will not be cut when it passes through its surface.

[0027] In addition, due to the elasticity of the elastic plastic and the impact resistance of the plastic itself, the sealing and fixing guide sheet can withstand the gravity of the developing roller and is not easily broken.

[0028] The method for recovering the toner cartridge of the present invention is provided with a sealing component at the end of the developing roller near the sealing film pulling outlet, a sealing fixed guide piece is inserted into the sealing component, and the pulling portion of the sealing film is reversely folded back to When the surface of the seal assembly on the side away from the developing roller passes through the gap between the seal fixing guide sheet and the seal assembly on the side away from the developing roller, the seal film is inclined at this time, and is close to Seal and fix the side of the guide sheet, and then guide it to the outside of the film pull-out port. Because the sealing and fixing guide sheet is fixedly disposed above the groove, the sealing and fixing guide sheet can effectively reduce the interaction force between the sealing film and the sealing component near the developing roller, and at the same time, the sealing film is provided in the gap. When it is pulled closer to the side of the sealing and fixing guide sheet, when the sealing film is pulled, it can be ensured that the sealing component on the side of the developing roller is not pulled out, thereby stabilizing the supporting effect of the sealing component under the developing roller on the developing roller, and To further prevent the toner in the toner silo from being sealed from The component is leaking. By using the structure of the above-mentioned toner cartridge, the process operation of resetting the sealing film at the mouth of the powder silo is also simplified and convenient, so as to facilitate the recycling and manufacturing of this kind of toner cartridge. Brief description of the drawings

BRIEF DESCRIPTION OF THE DRAWINGS

1 is an exploded view of a structure of an embodiment of a toner cartridge according to the present invention.

[0030] FIG. 2 is a structural diagram of a sealing and fixing guide sheet of an embodiment of a toner cartridge of the present invention.

3 is a structural diagram of a toner cartridge according to an embodiment of the present invention after a developing roller is hidden.

[0032] FIG. 4 is an enlarged view at A in FIG. 3.

[0033] FIG. 5 is an enlarged view after the sealing component is hidden at A in FIG. 3 and the film is sealed.

[0034] FIG. 6 is an enlarged view of the sealing component, the sealing film, and the sealing and fixing guide sheet hidden at A in FIG. 3.

[0035] FIG. 7 is an exploded view of a structure of a sealing assembly according to an embodiment of the present invention.

[0036] The present invention is further described below with reference to the drawings and embodiments.

Invention Examples

Embodiments of the invention

[0037] Referring to FIG. 1, FIG. 3, FIG. 4, and FIG. 7, the toner cartridge of the present invention includes a powder container 1, a sealing film 2 provided at the powder outlet 11 of the powder container 1, and a powder outlet Developing roller 3 above the mouth 11. A first end cover 4 and a second end cover 5 are respectively provided on both sides of the powder silo 1. A film pull-out opening 41 is provided on the first end cover 4, and a driving gear 51 is provided inside the second end cover 5. The developing roller 3 is disposed laterally between the first end cover 4 and the second end cover 5. A seal assembly 6 is provided below the end of the development roller 3 near the sealing film pull-out port 41, and the seal assembly 6 is in contact with the outer peripheral surface of the development roller 3. The sealing assembly 6 is also disposed in a groove 7 on the surface of the powder container 1. The sealing assembly 6 is provided with a first felt layer 61, a first sponge layer 62, a sealing and fixing guide piece 63, and a second sponge layer 64 in this order from the top to the bottom. The sealing film 2 is provided with a sticking portion 21 and a pulling portion 22. A powder filling port 13 is provided on the end wall 12 of the powder silo 1, and a powder filling cap 14 is provided on the powder filling port 13.

[0038] The sealing and fixing guide piece 63 is interposed between the first sponge layer 62 and the second sponge layer 64, the sealing and fixing guide piece 63 is fixedly provided above the groove 7, and the sealing and fixing guide piece 63 and the second sponge layer 64 A gap 100 is provided between the gap 100 and the sealing film pull-out port 41. The sealing film 2 can pass through the gap 100 and be guided outside the sealing film pull-out port 41.

1, FIG. 3, FIG. 6, and FIG. 7, the groove 7 includes an arc-shaped structure 71 and a right-angled bent structure 72 extending from the arc-shaped structure 71, and the right-angled bent structure 72 Straight part 720 with curved knot The structure 71 is connected, and the vertical portion 721 of the right-angled bending structure 72 stands on the surface of the powder bin 1. The arc-shaped structure 71 abuts against the rear wall 15 of the powder bin 1. The arc-shaped structure 71 abuts the rear wall 15 of the powder bin 1. A first depression 101 is provided. A vertical portion 721 of the right-angled bending structure 72 is provided with a second side. Depression 102.

[0040] The second sponge layer 64 cooperates with the arc surface of the arc-shaped structure 71 of the groove 7 and the straight surface of the straight portion 720 in the right-angled bent structure 72, and is provided with a first curved portion 640 and a first straight portion 641.

[0041] Referring to FIGS. 2, 3, 6 and 7, a second bent portion 63 is provided in the middle of the sealing and fixing guide piece 63.

A first extension portion 103 and a second extension portion 104 are respectively provided at two ends of the second bent portion 630. The first extension portion 103 is provided with a convex portion 200, and the convex portion 200 is used to be embedded in the first depression 101 on the rear wall 15 of the powder container 1. The second extending portion 104 is provided with a bending turning portion 201, and the bending turning portion 201 is provided with a straight section 300, a vertical section 301, and a leading section 302 in this order. A straight right angle 303 is passed between the straight section 300 and the vertical section 301. The vertical section 301 and the front section 302 are connected by a curved right angle 304, and the front section 302 of the bending and turning section 201 is reversely turned back toward the second curved section 630 through two curved right angles 303 and 304 to form a loop buckle. The straight section 300 of the bending turning section 201 passes over the upper end of the vertical portion 721 of the groove 72, and snaps its leading edge section 302 to the groove 7 of the second side of the vertical portion 721 of the right-angled bending structure 72 Inside the depression 102. Through the cooperation between the first extending portion 103 and the second extending portion 104 of the sealing and fixing guide piece 63 and both ends of the groove 7, the sealing and fixing guide piece 63 is fastened and arranged above the groove 7.

[0042] A circular arc edge portion 202 is further extended beside the convex portion 200 of the first extension portion 103, and the top of the circular arc edge portion 202 is abutted against the rear wall 15 of the silo 1 to better The second bent portion 630 is supported and fixed.

[0043] Referring to FIG. 3, FIG. 4, and FIG. 5, the above-mentioned gap 100 is formed between the second bent portion 630 of the sealing and fixing guide piece 63 and the first bent portion 640 of the second sponge layer 64. The gap 100 is A curved slit, and the sealing film pull-out opening 41 opposite to the curved slit is a curved slit, and the shape of the curved slit is the same as the shape of the curved slit. Bending edges 305 and 306 are respectively extended at the two ends of the second bending portion 630 toward the bottom of the groove 7, and the bending gaps can be effectively extended by the bending edges 305 and 306, so that the sealing film 2 has sufficient space to penetrate. Over the bending gap.

[0044] Referring to FIG. 1, FIG. 3, and FIG. 4 and FIG. 7, the first sponge layer 62 covers the sealing and fixing guide piece 63, and cooperates with the second bending portion 630 and the first of the sealing and fixing guide piece 63. The straight section 300 of the bending and rotating portion 201 of the two extending portions 104, the first sponge layer 62 is provided with a third bending portion 620 and a third straight portion 621. The first felt layer 61 is disposed over the first sponge layer 62. Correspondingly, the first felt layer 61 matches the third sponge layer 62. The bent portion 620 and the third straight portion 621, and the first felt layer 61 is provided with a fourth bent portion 610 and a fourth straight portion 61 1. The fourth bent portion 610 of the first felt layer 61 is in contact with the outer peripheral surface of the developing roller 3.

[0045] Referring to FIG. 2, the sealing and fixing guide piece 63 may be made of a steel sheet. To prevent the steel sheet from cutting to the sealing film 2, a film is wrapped around the outer surface of the steel sheet. The seal fixing guide piece 63 may also be made of elastic plastic.

[0046] The recycling method of the toner cartridge of the present invention is as follows:

[0047] After the developing roller 3 is removed, the entire toner cartridge is cleaned.

[0048] The seal fixing guide piece 63, the first felt layer 61, and the first sponge layer 62 are removed.

[0049] Paste the adhesive portion 21 of the sealing film 2 along the powder outlet 11 toward the driving gear 51, and then reversely pull the pulling portion 22 of the sealing film 2 to the surface of the second sponge layer 64; The film 2 is in an inclined state, and is biased toward the side of the sealing and fixing guide piece 63; and then, the pulling portion 22 of the sealing film 2 is passed through the sealing film pull-out opening 41.

[0050] The first extension portion 103 and the second extension portion 104 of the seal fixing guide piece 63 are fixedly connected to both ends of the groove 7.

[0051] The first sponge layer 62 and the first felt layer 61 are sequentially placed on the sealing and fixing guide sheet 63, and then the developing roller 3 is placed above the first felt layer 61.

[0052] Remove the powder filling cover 14, add toner to the powder silo 1 through the powder filling port 13, and then cover the powder filling cover 14.

[0053] According to the above steps, recycling and manufacturing processes can also be performed on the new toner cartridges currently on the market. After disassembling the developing roller, it is only necessary to open a film pull on the end cap of the new toner cartridge that is not provided with a driving gear. At the exit, the seal assembly is cut above the groove, and the seal assembly is divided into two parts near the developing roller side and away from the developing roller side, and then the adhesive part of the sealing film is carried along the powder outlet toward the driving gear. Paste, and then fold back the pull portion of the seal film to the surface of the seal assembly away from the developing roller, and then push the pull portion of the seal film out of the seal film exit. Then, the first extension portion and the second extension portion of a sealing and fixing guide piece are fixedly connected to both ends of the groove. Then place the seal assembly on the seal fixing guide near the developing roller. Then place the developing roller above the seal assembly on the side near the developing roller. Finally, remove the filler cap, add toner to the powder container through the filler port, and then cover the filler cap.

[0054] The above embodiments are merely preferred examples of the present invention, and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made in accordance with the structure, features, and principles described in the scope of the patent application for the present invention should be It is included in the scope of the patent application of the present invention.

Industrial Applicability [0056] The toner cartridge of the present invention is detachably mounted on a printer and can be recycled. Since the toner cartridge uses the above-mentioned sealing component, it can be ensured that the sealing component is not pulled out when the sealing film is pulled, thereby stabilizing the sealing component. Supports the developing roller, and further prevents the toner in the powder container from leaking out of the position of the sealing assembly. The process of recovering the toner cartridge with the sealing assembly and re-setting the sealing film at the mouth of the powder container is simple and convenient, which is convenient for re-manufacturing the toner cartridge.

Claims

Claim

[Claim 1] A sealing assembly for a toner cartridge, the toner cartridge comprising a powder container, a sealing film provided at a powder outlet of the powder container, and a developing roller provided above the powder outlet, End caps are provided on both sides of the powder silo, and a sealing film pull-out port is provided on one end cap. The developing roller is disposed between the two end caps, and the seal assembly is disposed on the developing roller. The seal assembly is close to the exit of the sealing film, and the seal assembly is in contact with the outer peripheral surface of the developing roller, and the seal assembly is disposed in a groove on the surface of the powder container;

A sealing and fixing guide is inserted into the sealing component, and the sealing and fixing guiding piece is fixedly disposed above the groove. A gap is provided between the sealing and fixing guiding piece and the sealing component on the side far from the developing roller. The sealing film can pass through the gap, and the gap is disposed opposite to the sealing film pull-out port.

[Claim 2] A toner cartridge, comprising a powder container, a sealing film provided at the powder outlet of the powder container, and a developing roller provided above the powder outlet, and two ends of the powder container are provided with ends A cover is provided with a sealing film pull-out port on one of the end caps, the developing roller is disposed between the two end caps, and the seal assembly is disposed at an end of the developing roller near the sealing film pull-out port. The sealing component is in contact with the outer peripheral surface of the developing roller, and the sealing component is arranged in a groove on the surface of the powder container;

It is characterized by:

[Claim 3] The toner cartridge according to claim 2, characterized in that:

A first extension portion and a second extension portion are respectively provided at both ends of the sealing and fixing guide piece, and the first extension portion and the second extension portion are respectively fixed to both ends of the groove.

[Claim 4] The toner cartridge according to claim 3, wherein:

A first recessed portion is provided at a first end of the groove, and a second protruding portion is provided at a first extension portion of the seal-fixing guide piece in cooperation with a first end of the groove; Buckle A bit portion, a second extending portion of the sealing and fixing guide piece, and a second end of the groove, a buckling portion is provided.

[Claim 5] The toner cartridge according to claim 3, wherein:

A first protrusion is provided at a first end of the groove, and a second depression is provided at a first extension of the seal-fixing guide piece in cooperation with a first end of the groove; A buckle portion is provided at the end, and a buckle portion is provided at the second extension portion of the sealing and fixing guide piece in cooperation with the second end of the groove.

[Claim 6] The toner cartridge according to any one of claims 2 to 5, wherein:

The sealing and fixing guide sheet is provided with a curved portion, a curved gap is provided between the curved portion and the sealing component on the side remote from the developing roller, and the sealing film pull-out opening is provided with a curved opening, the shape of the curved opening The shape is the same as the curved slit.

[Claim 7] The toner cartridge according to claim 6, wherein:

Two ends of the bent portion of the sealing and fixing guide piece respectively extend toward the bottom of the groove and are provided with bending edges.

[Claim 8] The toner cartridge according to any one of claims 2 to 7, characterized in that:

The seal assembly includes a felt layer and a sponge layer, the felt layer is provided on a side close to the developing roller, the sponge layer is provided on a side remote from the developing roller, and the sealing and fixing guide sheet is inserted in the sponge layer.

[Claim 9] The toner cartridge according to any one of claims 2 to 8, characterized in that:

The sealing and fixing guide sheet is made of a steel sheet, and the surface of the steel sheet is covered with a film.

[Claim 10] The toner cartridge according to any one of claims 2 to 9, wherein:

The sealing and fixing guide piece is made of elastic plastic.

[Claim 11] A method for recovering a toner cartridge, wherein the toner cartridge includes a powder container, a sealing film provided at a powder outlet of the powder container, and a developing roller provided above the powder outlet. An end cover is provided on both sides of the powder silo, a sealing film pull-out port is provided on one end cover, the developing roller is disposed between the two end covers, and the seal assembly is disposed near the developing roller. One end of the sealing film pull-out port, the sealing component is in contact with the outer peripheral surface of the developing roller, and the sealing component is disposed in a groove on the surface of the powder container; the sealing film is provided with an adhesive portion and a pulling portion, and The end wall of the silo is provided with irrigation Powder mouth, a powder filling cover is provided on the powder filling mouth;

It is characterized by:

A sealing and fixing guide is inserted into the sealing component, and the sealing and fixing guiding piece is fixedly disposed above the groove. A gap is provided between the sealing and fixing guiding piece and the sealing component on the side far from the developing roller. The sealing film can pass through the gap, and the gap is opposite to the sealing film pulling outlet;

The toner cartridge is recycled as follows:

After removing the developing roller, remove the sealing and fixing guide sheet and the sealing assembly near the developing roller; and stick the sealing part of the sealing film along the powder outlet in a direction away from the sealing film pull-out opening, Then, the pull portion of the sealing film is reversely folded back to the surface of the seal assembly farther away from the developing roller; the pull portion of the sealing film is penetrated out of the sealing film exit; and the sealing and fixing guide sheet is reset. Above the groove;

Placing a seal assembly near the developing roller on the seal fixing guide sheet; placing a development roller on the seal assembly near the developing roller;

Open the powder filling cap, add toner to the powder silo through the powder filling port, and then cover the powder filling cap.