Toner cartridge with excessive powder discharge prevention structure

Abstract

The utility model provides a toner cartridge with an excessive toner discharge prevention structure, which comprises a toner bin, a printing assembly is arranged in the toner bin and comprises a toner discharge knife, a cleaning brush and a developing roller, the cleaning brush is arranged on the toner discharge knife, the developing roller is arranged on one side of the toner discharge knife, and the toner discharge knife is arranged on the developing roller. The cleaning brush is arranged in the powder outlet knife and is in contact with a knife edge of the powder outlet knife and the cleaning brush, the cleaning brush comprises a contact scraping layer, a one-way permeable layer, a powder storage layer and a soft frame, and the powder storage layer, the one-way permeable layer and the contact scraping layer are sequentially overlaid in the soft frame from inside to outside. The utility model relates to the technical field of printing.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to a carbon powder box with an anti-over-powder discharge structure. Background Art

[0002] Currently, most toner cartridges on the market rely on a powder blade to adjust the amount of toner on the developer roller to ensure print quality. The powder blade's primary function is to spread the toner on the developer roller, forming a uniform coating and ensuring a clear and even print image. However, with the passage of time and technological advancements, this simple powder delivery mechanism has gradually exposed some shortcomings.

[0003] First, as the developer roller ages, its surface properties change, potentially causing toner to adhere more easily to it. Consequently, even when the toner is still present, the developer roller may experience excessive toner buildup, impacting print quality. Excessive toner buildup on the developer roller can not only cause defects like spots or lines on printed documents, but can also cause wear or malfunction of other components within the printer. Secondly, if the developer roller is not effectively cleaned of excess toner during repeated use, this residue will accumulate, further exacerbating print quality issues.

[0004] Therefore, it is imperative to design a toner cartridge with an anti-over-powder discharge structure. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the present invention provides a toner cartridge with an anti-over-powder discharge structure, aiming to solve the problems in the prior art of poor printing effect and shortened service life caused by aging of the developing roller and excessive accumulation of toner.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a toner cartridge with an anti-excessive powder discharge structure, comprising a powder hopper, a printing component arranged in the powder hopper, the printing component comprising a powder discharge knife, a cleaning brush and a developing roller, the cleaning brush being arranged on the powder discharge knife, the developing roller being arranged on one side of the powder discharge knife and in contact with the blade of the powder discharge knife and the cleaning brush, the cleaning brush comprising a contact scraping layer, a one-way permeation layer, a powder storage layer and a soft frame, the powder storage layer, the one-way permeation layer and the contact scraping layer being stacked in sequence from the inside to the outside in the soft frame.

[0007] Based on the above, the beneficial effect of a toner cartridge with an anti-over-powder discharge structure is to solve the problem of poor printing effect and shortened service life caused by aging of the developing roller and excessive accumulation of toner in the prior art; it is mainly reflected in: the utility model sets a cleaning brush, especially the brush design in the contact scraping layer, which can effectively scrape the excess toner on the developing roller back into the powder bin, and the excess toner is guided to the one-way permeability layer during the vibration of printing, avoiding the excessive accumulation of toner caused by aging of the developing roller, thereby improving the printing quality and extending the service life of the developing roller; the setting of the one-way permeability layer can prevent the processed toner from re-contaminating the developing roller when the toner cartridge is moved or inverted, ensuring the cleanliness of the developing roller during printing, and thus ensuring the quality of the printed document; the powder storage layer allows excess toner to be collected instead of being scattered inside the printer or on other components, reducing the impact on the internal environment of the printer and helping to maintain the normal operation of the printer.

[0008] Furthermore, the contact scraping layer includes an implant frame and several groups of brushes. Several holes are evenly distributed on the implant frame. Each group of brushes is installed on one hole, and one hole is left between every two groups of brushes to allow excess carbon powder to enter the one-way permeability layer through vibration, thereby preventing carbon powder from accumulating between the brushes. The implant frame is made of soft material.

[0009] Based on the above, the beneficial effect of the implanted frame is to install brushes; the beneficial effect of several groups of brushes is to scrape off excess carbon powder on the developing roller to ensure the cleanliness of the developing roller surface; the beneficial effect of several holes and grooves is to guide the small amount of carbon powder that falls between each group of brushes into the unidirectional permeable layer.

[0010] Furthermore, the one-way permeability layer includes a porous sponge and a one-way membrane, and the one-way membrane is arranged between the porous sponge and the contact scraping layer to prevent part of the toner from pouring out from the contact scraping layer and re-contaminating the developing roller when the toner cartridge is taken out and turned upside down.

[0011] Based on the above, the beneficial effect of the porous sponge is to absorb and temporarily store excess toner that falls off from the contact scraping layer, and the toner finally enters the powder storage layer during printing vibration; the beneficial effect of the one-way film is to prevent toner from flowing out in the opposite direction when the toner cartridge is inverted, thereby keeping the developing roller clean.

[0012] Furthermore, the powder storage layer is a powder storage grid for storing the carbon powder entering the one-way permeation layer.

[0013] Based on the above, the beneficial effect of the powder storage rack is that it can collect carbon powder that passes through the unidirectional permeable layer and reduce internal pollution.

[0014] Furthermore, the soft frame and the powder storage grid are both made of soft materials.

[0015] In order to more clearly illustrate the above features of the present invention and the objectives to be achieved, the present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 : It is the internal structure diagram of the utility model;

[0017] Figure 2 : A schematic diagram of the structure of the cleaning brush of the present invention;

[0018] Figure 3 : A schematic diagram of an implant frame of the present invention;

[0019] Figure 4 : It is a schematic diagram of the brush installation of the present utility model.

[0020] Explanation of the accompanying numbers: 1-powder bin, 2-printing component, 21-powder discharge knife, 22-cleaning brush, 221-contact scraping layer, 2211-implantation frame, 2212-brush, 2213-hole groove, 222-one-way permeability layer, 2221-porous sponge, 2222-one-way membrane, 223-powder storage layer, 224-soft frame, 23-developing roller. DETAILED DESCRIPTION

[0021] like Figure 1-Figure 4 As shown, a toner cartridge with an anti-over-powder discharge structure includes a powder silo 1, a printing component 2 is arranged in the powder silo 1, and the printing component 2 includes a powder discharge knife 21, a cleaning brush 22 and a developing roller 23. The cleaning brush 22 is arranged on the powder discharge knife 21, and the developing roller 23 is arranged on one side of the powder discharge knife 21 and in contact with the blade of the powder discharge knife 21 and the cleaning brush 22. The cleaning brush 22 includes a contact scraping layer 221, a one-way permeation layer 222, a powder storage layer 223 and a soft frame 224. The powder storage layer 223, the one-way permeation layer 222 and the contact scraping layer 221 are sequentially stacked in the soft frame 224 from the inside to the outside.

[0022] The contact scraping layer 221 includes an implant frame 2211 and several groups of brushes 2212. Several holes 2213 are evenly distributed on the implant frame 2211. Each group of brushes 2212 is installed on one hole 2213, and one hole 2213 is left between every two groups of brushes 2212 to allow excess carbon powder to enter the one-way permeable layer 222 through vibration, thereby preventing carbon powder from accumulating between the brushes 2212. The implant frame 2211 is made of soft material.

[0023] The one-way permeation layer 222 includes a porous sponge 2221 and a one-way membrane 2222. The one-way membrane 2222 is arranged between the porous sponge 2221 and the contact scraping layer 221 to prevent part of the toner from being poured out from the contact scraping layer 221 and re-contaminating the developing roller 23 when the toner cartridge is taken out and turned upside down.

[0024] The powder storage layer 223 is a powder storage grid for storing the carbon powder entering the one-way permeable layer 222 .

[0025] The soft frame 224 and the powder storage grid are both made of soft materials.

[0026] To sum up, the specific implementation of the present invention is as follows: when the printer starts working, the developing roller 23 starts to rotate, at this time the developing roller 23 brings out the toner from the powder bin 1, and through the adjustment of the powder knife 21, the toner on the developing roller 23 is controlled to a certain thickness. In order to ensure that the amount of toner on the developing roller 23 is neither too much nor too little, the cleaning brush 22 is designed to include a contact scraping layer 221, a unidirectional permeable layer 222, a powder storage layer 223 and a soft frame 224.

[0027] The contact scraping layer 221 is composed of an implant frame 2211 and brushes 2212. The implant frame 2211 is evenly distributed with holes 2213. Each group of brushes 2212 is installed on a hole 2213, and a hole 2213 is left between every two groups of brushes 2212. This design allows the brushes 2212 to scrape the toner back to the powder bin when the toner on the developing roller 23 exceeds a certain thickness during printing, or when toner accumulates on the developing roller 23 after printing is completed. The toner that partially falls between the groups of brushes is vibrated to guide the excess toner on the developing roller 23 into the one-way permeable layer 222, thereby preventing excessive accumulation of toner on the developing roller 23.

[0028] The one-way permeable layer 222 includes a porous sponge 2221 and a one-way membrane 2222. The one-way membrane 2222 is disposed between the porous sponge 2221 and the contact scraping layer 221. When the developing roller 23 rotates, the brush 2212 on the contact scraping layer 221 scrapes excess toner from the developing roller 23 through the one-way membrane 2222 and into the porous sponge 2221. The one-way membrane 2222 prevents some toner from flowing back out of the contact scraping layer 221 and contaminating the developing roller 23 when the toner cartridge is removed and turned upside down.

[0029] The powder storage layer 223 is a powder storage grid for storing excess toner entering from the one-way permeable layer 222, thereby preventing the toner from being randomly scattered inside the printer, reducing internal pollution, and maintaining the normal operation of the printer.

[0030] The above description is only the optimal solution embodiment of the present invention and is not intended to limit the present invention. Various modifications or replacements of the present invention made by those skilled in the art without departing from the essence and protection scope of the present invention should also be within the protection scope of the present invention.

Claims

1. A toner cartridge with an anti-over-discharge structure, comprising a powder bin (1), characterized in that: A printing assembly (2) is provided in the powder bin (1), and the printing assembly (2) comprises a powder discharge knife (21), a cleaning brush (22) and a developing roller (23); the cleaning brush (22) is provided on the powder discharge knife (21); the developing roller (23) is provided on one side of the powder discharge knife (21) and is in contact with the blade of the powder discharge knife (21) and the cleaning brush (22); the cleaning brush (22) comprises a contact scraping layer (221), a one-way permeation layer (222), a powder storage layer (223) and a soft frame (224); the powder storage layer (223), the one-way permeation layer (222) and the contact scraping layer (221) are sequentially stacked in the soft frame (224) from the inside to the outside.

2. The toner cartridge with an anti-over-discharge structure according to claim 1, characterized in that: The contact scraping layer (221) includes an implant frame (2211) and several groups of brushes (2212). Several holes (2213) are evenly distributed on the implant frame (2211). Each group of brushes (2212) is installed on one of the holes (2213), and one hole (2213) is left between every two groups of brushes (2212) to allow excess carbon powder to enter the one-way permeable layer (222) through vibration, thereby preventing carbon powder from accumulating between the several brushes (2212). The implant frame (2211) is made of soft material.

3. The toner cartridge with an anti-over-discharge structure according to claim 1, characterized in that: The one-way permeation layer (222) comprises a porous sponge (2221) and a one-way membrane (2222), wherein the one-way membrane (2222) is arranged between the porous sponge (2221) and the contact scraping layer (221) to prevent part of the toner from being poured out from the contact scraping layer (221) and re-contaminating the developing roller (23) when the toner cartridge is taken out and turned upside down.

4. The toner cartridge with an anti-over-discharge structure according to claim 1, characterized in that: The powder storage layer (223) is a powder storage grid, used for storing the carbon powder entering the one-way permeation layer (222).

5. The toner cartridge with an anti-over-discharge structure according to claim 1, characterized in that: The soft frame (224) and the powder storage grid are both made of soft materials.

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