Developing box with magnetic force

Abstract

The utility model discloses a developing box with magnetic force. The developing box comprises a base; the moving part is movably arranged on the base; the movable receiving part is arranged on the movable part, can move downwards relative to the movable part, and is used for receiving power to drive the movable part to move relative to the base; the magnetic reset device is arranged on the moving part and / or the moving receiving piece, and the magnetic reset device can apply acting force to the moving receiving piece through the magnetic force so that the moving receiving piece can move upwards relative to the moving part; reliability of normal disassembly and assembly and use of the developing box can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of printers, and in particular to a magnetic developing cartridge. Background Technology

[0002] In some current laser printers, the developing cartridge is divided into a fixed part and a rotating part. The photosensitive drum is located on the fixed part, while the toner cartridge and developing roller are located on the rotating part. During printing, the rotating part is driven to rotate so that the developing roller and the photosensitive drum come into contact. In non-printing state, the rotating part is driven to rotate so that the developing roller and the photosensitive drum separate.

[0003] To facilitate the installation of such developer cartridges, the rotating receiving component on the developer cartridge, which drives the rotating part, is generally designed to move up and down relative to the rotating part. When the developer cartridge is installed, the rotating receiving component is pushed down by the contact, allowing the drive device to move the rotating receiving component. When the developer cartridge is removed from the printer, the rotating receiving component moves upward under the action of the reset mechanism, clearing the path for the developer cartridge removal. The reset mechanism is generally made of elastic components such as springs. When the developer cartridge is disassembled and installed too many times, the elastic components such as springs are prone to failure, affecting the normal disassembly, assembly, and use of the developer cartridge. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a magnetically-driven developing cartridge, which can improve the reliability of the developing cartridge and ensure its normal assembly, disassembly, and use.

[0005] The present invention relates to a magnetic developing cartridge, comprising: a base; a movable part movably disposed on the base; a movable receiving member disposed on the movable part, the movable receiving member being movable downward relative to the movable part, the movable receiving member being used to receive power to drive the movable part to move relative to the base; and a magnetic reset device disposed on the movable part and / or the movable receiving member, the magnetic reset device being able to apply a force to the movable receiving member through magnetic force so that the movable receiving member can move upward relative to the movable part.

[0006] According to some embodiments of the present invention, the magnetic reset device includes: a first magnetic absorbing member disposed on a movable receiving member; a second magnetic absorbing member disposed on a movable part; both the second magnetic absorbing member and the first magnetic absorbing member are magnets, and the second magnetic absorbing member can apply an upward magnetic force to the first magnetic absorbing member.

[0007] According to some embodiments of the present invention, both the first magnetic attractor and the second magnetic attractor are permanent magnets.

[0008] According to some embodiments of the present invention, the first magnetic attractor is located above the second magnetic attractor, and the first magnetic attractor and the second magnetic attractor can generate mutually repulsive magnetic forces.

[0009] According to some embodiments of the present invention, the magnetic reset device includes: a first magnetic attractor disposed on a movable receiving member; a second magnetic attractor disposed on a movable part; one of the first magnetic attractor and the second magnetic attractor is a magnet and the other is a ferromagnetic component.

[0010] According to some embodiments of the present invention, the second magnetic attractor is a permanent magnet, the first magnetic attractor is a ferromagnetic component, and the second magnetic attractor is located above the first magnetic attractor.

[0011] According to some embodiments of the present invention, the magnetic developing cartridge further includes: a photosensitive drum rotatably mounted on a base; and a developing roller rotatably mounted on a movable part. The movable part is rotatably connected to the base and is capable of rotating relative to the base to a first position and a second position. When the movable part rotates relative to the base to the first position, the developing roller and the photosensitive drum are in contact. When the movable part rotates relative to the base to the second position, there is a gap between the developing roller and the photosensitive drum.

[0012] According to some embodiments of the present invention, the magnetic developing cartridge further includes a first power receiving member rotatably disposed on the moving part, the first power receiving member being connected to the developing roller in a transmission manner, and the axis of rotation of the moving part relative to the base coinciding with the axis of rotation of the first power receiving member.

[0013] According to some embodiments of the present invention, the upper end of the mobile receiver is provided with a pressing part, and the mobile receiver can move downward when the pressing part is subjected to downward pressure.

[0014] According to some embodiments of the present invention, the lower end of the mobile receiver is provided with a movable receiving part, which can receive the force of the driving device, so that the mobile receiver drives the moving part to rotate relative to the base.

[0015] Using the aforementioned developing cartridge, when the developing cartridge is installed in the printer, the movable receiving component can move downward relative to the moving part, allowing the printer's drive unit to engage with the movable receiving component. When the developing cartridge is removed, the magnetic reset device can drive the movable receiving component upward, ensuring that the developing cartridge can be removed normally. Compared to the existing technology that uses springs or other elastic reset components, the magnetic reset solution avoids the possibility of the reset mechanism failing due to excessive movement, effectively improving the reliability of the developing cartridge's normal disassembly, assembly, and use.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is an axonometric view of the first type of developing cartridge in an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 Exploded view of the central developing chamber structure;

[0020] Figure 3 for Figure 2 Enlarged view of section A;

[0021] Figure 4 for Figure 1 Side view of the central developing chamber structure;

[0022] Figure 5 for Figure 4 A sectional view along the EE direction;

[0023] Figure 6 for Figure 1 Side view of the developing chamber section in another configuration;

[0024] Figure 7 for Figure 6 Sectional view along the FF direction;

[0025] Figure 8 This is a side view of the second type of developing cartridge structure in an embodiment of this utility model;

[0026] Figure 9 for Figure 9 A cross-sectional view along the GG direction;

[0027] The above figures include the following reference numerals.

[0028] label name 100 base 110 Charging device 120 Photosensitive drum 130 First power receiver 210 Pink silo 220 Fasteners 221 Limiting post 222 Second magnetic component 230 Mobile receiver 231 Event Receiving Department 232 Downward pressure section 233 Limiting groove 234 First magnetic component Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first" and "second" are used, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] The developing cartridge of this embodiment includes: a base 100; a movable part movably disposed on the base 100; a movable receiver 230 disposed on the movable part, the movable receiver 230 being movable downward relative to the movable part, the movable receiver 230 being used to receive power to drive the movable part to move relative to the base 100; and a magnetic reset device disposed on the movable part and / or the movable receiver 230, the magnetic reset device being able to apply a force to the movable receiver 230 through magnetic force so that the movable receiver 230 can move upward relative to the movable part.

[0034] Using the aforementioned developer cartridge, when the developer cartridge is inserted into the printer, the movable receiver 230 can move downward relative to the movable part, allowing the printer's drive unit to engage with the movable receiver 230. When the developer cartridge is removed, the magnetic reset device can drive the movable receiver 230 upward, ensuring that the developer cartridge can be removed normally. Compared to the existing technology that uses springs or other elastic reset components, the magnetic reset method avoids the possibility of the reset mechanism failing due to excessive movement, resulting in high reliability and better ensuring the normal disassembly, assembly, and use of the developer cartridge.

[0035] It should be noted that when the developer cartridge is installed in the printer, the moving receiver 230 will move downwards, that is, along... Figures 1 to 4The movement is in the y-direction as shown; while the reset of the moving receiver 230 mentioned in this embodiment refers to the upward movement of the moving receiver 230 under the drive of the reset mechanism after the developing cartridge is removed from the printer, which is the opposite movement along the y-direction. The magnetic reset device can achieve the upward reset of the moving receiver 230 by magnetic force in various ways, such as by two magnets of the same polarity repelling each other, or by two magnets of different polarities attracting each other, or by one magnet attracting a ferromagnetic component; the magnet can be a permanent magnet or an electromagnet; when an electromagnet is used, it can be powered by its own battery or by the printer.

[0036] like Figure 1 As shown, the developing cartridge is also equipped with a photosensitive drum 120, which is rotatably connected to the base 100. The moving part includes a toner cartridge 210 and a developing roller. When the moving part moves relative to the base 100, the developing roller and the photosensitive drum 120 can contact or separate. The printer's drive device can control the position of the moving part relative to the base 100 by pushing and pulling the moving receiver 230, thereby controlling the separation and contact of the developing roller and the photosensitive drum 120. When the printer is printing, the developing roller and the photosensitive drum 120 are controlled to contact each other, and when the printer is not printing, the developing roller and the photosensitive drum 120 are controlled to separate. The moving part can be slidably connected to the base 100 or rotatably connected to the base 100. The figures in this embodiment show the rotatable connection method.

[0037] like Figure 1 As shown, the developing cartridge also includes a first power receiver 130 rotatably mounted on the moving part. The first power receiver 130 is connected to the developing roller via a transmission mechanism. The axis of rotation of the moving part relative to the base 100 coincides with the axis of rotation of the first power receiver 130. The first power receiver 130 receives torque transmitted from the printer and transmits the torque to rotating components, including the developing roller, toner roller, and agitator roller, via gear sets and other transmission components. Because the axis of rotation of the moving part relative to the base 100 coincides with the axis of rotation of the first power receiver 130, once the developing cartridge is installed in place, regardless of the moving part... The position of the first power receiver 130 relative to the printer remains unchanged regardless of the position it rotates relative to the base 100, ensuring that the first power receiver 130 can stably transmit torque to the developing roller, the powder feeding roller, and the stirring roller. On the other hand, the photosensitive drum 120 and the charging roller are both mounted on the base 100. The photosensitive drum 120 obtains torque from the printer through a second power receiver (not shown in the figure), and the charging roller is used to transmit electrical energy from the printer to the photosensitive drum 120. The imaging principle of the developing cartridge in this embodiment can be referred to the working principle of laser printers in the prior art, and will not be described in detail here.

[0038] like Figure 1 As shown, the developing cartridge includes: a photosensitive drum 120, rotatably mounted on a base 100; and a developing roller, rotatably mounted on a movable part. The movable part is rotatably connected to the base 100 and can rotate relative to the base 100 to a first position and a second position. When the movable part rotates relative to the base 100 to the first position, the developing roller and the photosensitive drum 120 are in contact. When the movable part rotates relative to the base 100 to the second position, there is a gap between the developing roller and the photosensitive drum 120. That is, the first position is the position of the movable part when the printer is in the printing state, and the second position is the position of the movable part when the printer is not in the printing state. The switching between the first and second positions is achieved by the printer's drive device driving the movable receiving member 230 to move. The photosensitive drum 120 and the developing roller are both along the left-right direction of the developing cartridge. Figure 1 It extends in the x-direction.

[0039] like Figures 2 to 7 As shown, the upper end of the movable receiver 230 is provided with a pressing part 232. When the pressing part 232 is subjected to downward pressure, the movable receiver 230 can move downward. When the developing cartridge is inserted into the printer, the pressing part 232 is abutted by the printer components, and the entire movable receiver 230 moves downward. When the developing cartridge is removed from the printer, the pressing part 232 loses its abutment, and the entire movable receiver 230 moves upward under the action of the magnetic reset device, avoiding the path of the developing cartridge being removed from the printer, ensuring that the developing cartridge can be removed smoothly while operating normally.

[0040] The movable receiver 230 has a movable receiving part 231 at its lower end. The movable receiving part 231 can receive the force of the driving device, causing the movable receiver 230 to rotate relative to the base 100. When the developing cartridge is inserted into the printer, the pressing part 232 is pressed against by the printer components, and the entire movable receiver 230 moves downward. At this time, the movable receiving part 231 can move downward to a position that can be driven by the printer's driving device. The printer can then control the contact and separation of the developing roller and the photosensitive drum 120 through the driving device. When the developing cartridge is removed from the printer, the pressing part 232 loses its contact, and the entire movable receiver 230 moves upward under the action of the magnetic reset device. The movable receiver 230 leaves the position that can be driven by the driving device and avoids the path for removing the developing cartridge from the printer, ensuring that the developing cartridge can be removed smoothly while operating normally.

[0041] like Figures 8 to 9As shown, in some embodiments, the magnetic reset device includes: a first magnetic chuck 234 disposed on the movable receiver 230; and a second magnetic chuck 222 disposed on the movable part. Both the second magnetic chuck 222 and the first magnetic chuck 234 are magnets, and the second magnetic chuck 222 can apply an upward magnetic force to the first magnetic chuck 234. Compared with a solution using one magnet and one ferromagnetic component, the use of magnetic chucks for both the first magnetic chuck 234 and the second magnetic chuck 222 can provide a greater magnetic force, ensuring that the movable receiver 230 can be smoothly reset after the developing cartridge is removed.

[0042] In this design, both the first magnetic chuck 234 and the second magnetic chuck 222 are permanent magnets. Of course, an electromagnet can also be used as the first magnetic chuck 234 or the second magnetic chuck 222. Compared with the solution using an electromagnet, using a permanent magnet can save the power supply structure of the electromagnet and simplify the structure of the developing cartridge.

[0043] like Figure 9 As shown, the first magnetic attractor 234 is located above the second magnetic attractor 222. The first magnetic attractor 234 and the second magnetic attractor 222 can generate a repulsive magnetic force. Here, the second magnetic attractor 222 and the first magnetic attractor 234 are a pair of permanent magnets with opposite polarities, which can generate a repulsive magnetic force between them, providing a resetting force for the movable receiver 230. Figure 9 As shown, the first magnetic suction member 234 is actually installed below the movable receiving part 231, while the second magnetic suction member 222 is installed on an extension of the fixing member 220 of the moving part. The two are arranged opposite each other in the vertical direction. When the developing cartridge is inserted into the printer, the pressing part 232 is abutted by the printer components, and the entire movable receiving part 230 moves downward. At this time, the movable receiving part 231 can move downward to a position that can be driven by the printer's drive device. The printer can then control the contact and separation of the developing roller and the photosensitive drum 120 through the drive device. When the developing cartridge is removed from the printer, the pressing part 232 loses its abutment, and the repulsive force of the second magnetic suction member 222 on the first magnetic suction member 234 pushes the entire movable receiving part 230 upward. The movable receiving part 230 leaves the position that can be driven by the drive device and avoids the path of the developing cartridge being removed from the printer, ensuring that the developing cartridge can be removed smoothly while operating normally.

[0044] In some embodiments, such as Figures 1 to 7As shown, the magnetic reset device includes: a first magnetic chuck 234 disposed on the movable receiver 230; and a second magnetic chuck 222 disposed on the movable part. One of the first magnetic chuck 234 and the second magnetic chuck 222 is a magnet and the other is a ferromagnetic component. That is, it is not necessary to make both magnetic chucks magnets; it is sufficient for one of the two magnetic chucks to be a magnet and the other to be a ferromagnetic component, i.e., a part made of ferromagnetic material. Compared with the scheme of making both magnetic chucks magnets, the scheme of using one magnet and one ferromagnetic component does not require consideration of the polarity of the magnet during assembly. This reduces the possibility that the movable receiver 230 cannot be reset due to assembly errors, thus preventing the developer cartridge from being removed from the printer.

[0045] Specifically, such as Figure 5 , Figure 7 As shown, the second magnetic chuck 222 is a permanent magnet, and the first magnetic chuck 234 is a ferromagnetic component. The second magnetic chuck 222 is located above the first magnetic chuck 234. When the developing cartridge is inserted into the printer, the pressing part 232 is abutted by the printer components, and the entire moving receiving part 230 moves downward. At this time, the movable receiving part 231 can move downward to a position that can be driven by the printer's drive device. The printer can then control the contact and separation of the developing roller and the photosensitive drum 120 through the drive device. When the developing cartridge is removed from the printer, the pressing part 232 loses its abutment, and the attraction of the second magnetic chuck 222 to the first magnetic chuck 234 drives the entire moving receiving part 230 upward. The moving receiving part 230 leaves the position that can be driven by the drive device and avoids the path for removing the developing cartridge from the printer, ensuring that the developing cartridge can be removed smoothly while operating normally.

[0046] like Figure 2 , Figure 3 As shown, the entire moving part includes a toner cartridge 210 and a fixing member 220 at the end of the toner cartridge 210. The moving receiver 230 is mounted on the fixing member 220 and moves up and down relative to the fixing member 220. In order to limit the up and down movement of the moving receiver 230 and prevent the moving receiver 230 from coming out of the developing cartridge, a limiting groove 233 is provided on the moving receiver 230, and a limiting post 221 is provided on the fixing member 220. The limiting post 221 is inserted into the limiting groove 233 to limit the up and down movement range of the entire moving receiver 230 and prevent the moving receiver 230 from coming out upward or downward.

[0047] For details on how the printer drives the developing cartridge to form an image after it is installed in the printer in this embodiment, please refer to the relevant prior art published in CN101371202A.

[0048] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A magnetic developing cartridge, characterized in that, include: Base (100); The movable part is movably disposed on the base (100); A movable receiver (230) is disposed on the movable part. The movable receiver (230) is movable downward relative to the movable part. The movable receiver (230) is used to receive power to drive the movable part to move relative to the base (100). A magnetic reset device is provided on the moving part and / or the moving receiver (230), which can apply a force to the moving receiver (230) by magnetic force so that the moving receiver (230) can move upward relative to the moving part.

2. The magnetic developing cartridge according to claim 1, characterized in that, The magnetic reset device includes: A first magnetic attractor (234) is disposed on the movable receiver (230); A second magnetic suction element (222) is disposed on the movable part; Both the second magnetic attractor (222) and the first magnetic attractor (234) are magnets, and the second magnetic attractor (222) can apply an upward magnetic force to the first magnetic attractor (234).

3. The magnetic developing cartridge according to claim 2, characterized in that, Both the first magnetic attractor (234) and the second magnetic attractor (222) are permanent magnets.

4. The magnetic developing cartridge according to claim 2, characterized in that, The first magnetic attractor (234) is located above the second magnetic attractor (222), and the first magnetic attractor (234) and the second magnetic attractor (222) can generate mutually repulsive magnetic forces.

5. The magnetic developing cartridge according to claim 1, characterized in that, The magnetic reset device includes: A first magnetic attractor (234) is disposed on the movable receiver (230); A second magnetic suction element (222) is disposed on the movable part; One of the first magnetic attractor (234) and the second magnetic attractor (222) is a magnet and the other is a ferromagnetic component.

6. The magnetic developing cartridge according to claim 5, characterized in that, The second magnetic attractor (222) is a permanent magnet, the first magnetic attractor (234) is a ferromagnetic component, and the second magnetic attractor (222) is located above the first magnetic attractor (234).

7. The magnetic developing cartridge according to claim 1, characterized in that, Also includes: A photosensitive drum (120) is rotatably mounted on the base (100); The developing roller is rotatably mounted on the moving part; The movable part is rotatably connected to the base (100). The movable part can rotate relative to the base (100) to a first position and a second position. When the movable part rotates relative to the base (100) to the first position, the developing roller and the photosensitive drum (120) are in contact. When the movable part rotates relative to the base (100) to the second position, there is a gap between the developing roller and the photosensitive drum (120).

8. The magnetic developing cartridge according to claim 7, characterized in that, It also includes a first power receiver (130) rotatably disposed on the moving part, the first power receiver (130) being drively connected to the developing roller, and the axis of rotation of the moving part relative to the base (100) coinciding with the axis of rotation of the first power receiver (130).

9. The magnetic developing cartridge according to claim 1, characterized in that, The upper end of the mobile receiver (230) is provided with a pressing part (232), and the mobile receiver (230) can move downward when the pressing part (232) is subjected to downward pressure.

10. The magnetic developing cartridge according to claim 9, characterized in that, The lower end of the mobile receiver (230) is provided with a movable receiver (231), which can receive the force of the driving device, so that the mobile receiver (230) drives the moving part to rotate relative to the base (100).

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