Processing box

Abstract

The embodiment of the utility model provides a processing box and relates to the technical field of printing. The processing box comprises a box body, a first electrode, a second electrode and an insulating part, the first electrode is connected with the second electrode, and the insulating part is arranged on the box body. When original carbon powder is replaced by compatible carbon powder and the humidity of a printing environment is changed, a user selects different voltages received by the processing box from different contact pins of a printer by moving the position of an insulating part, so that the voltages received by a developing roller, a powder outlet knife and a powder feeding roller of the processing box are adjusted to control the printing quality, and the printing quality is improved. And the printing quality is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to a processing box. Background Art

[0002] Image forming devices, such as laser printers, are equipped with a process cartridge. These include integrated process cartridges that integrate a photosensitive unit and a developing unit, and separate process cartridges that include only a photosensitive unit or a developing unit. The developing unit includes a cartridge body, a developing roller, a powder blade, a powder feed roller, a gear transmission device, and a stirring element. The cartridge body is formed with a developer chamber for accommodating the developer. The developer in the developer chamber is supplied to the developing roller via a powder feed roller. The developer supplied to the developing roller passes between the developing roller and the powder blade and is adjusted to form a thin layer of developer of uniform thickness on the surface of the developing roller.

[0003] In related art, the end cap of the developing unit of a process cartridge is equipped with two electrodes. These electrodes are used to electrically connect to the contact pins of a laser printer. One electrode transmits voltage to the developing roller, while the other transmits voltage to the powder blade and powder feed roller. Laser printers can adjust the printed color depth based on varying humidity levels by adjusting the voltage of at least one electrode. For example, a laser printer can adjust the printed color depth by adjusting the voltage transmitted to one end of the powder blade.

[0004] However, when the original toner is replaced with compatible toner and the humidity of the printing environment changes, the voltage adjustment scheme of the laser printer cannot make the printed color meet the printing quality. Utility Model Content

[0005] The embodiment of the present invention provides a processing cartridge to solve the problem that when the original toner is replaced with compatible toner and the humidity of the printing environment changes, the voltage adjustment scheme of the laser printer cannot ensure that the printed color meets the printing quality.

[0006] The present invention provides a process cartridge installed in a printer, wherein the printer has a first contact pin and a second contact pin, and the process cartridge includes:

[0007] A box body, wherein the box body is provided with a developing roller, a powder discharging knife and a powder feeding roller;

[0008] a first electrode, the first electrode being mounted on the box body and contacting the developing roller;

[0009] a second electrode, the second electrode being mounted on the box body, the second electrode being in contact with the powder discharge knife and the powder feeding roller respectively, and the second electrode being connected to the first electrode;

[0010] an insulating member, the insulating member being movably connected to the box body;

[0011] The insulating member is configured to move to a first position so that the first electrode is electrically connected to a first contact pin of the printer and the second electrode is electrically connected to a second contact pin of the printer;

[0012] The insulating member is configured to move to a second position so that the first electrode is disconnected from the first contact pin of the printer and the second electrode is electrically connected to the second contact pin of the printer;

[0013] The insulating member is configured to move to a third position so that the first electrode is electrically connected to the first contact pin of the printer and the second electrode is disconnected from the second contact pin of the printer.

[0014] In a possible implementation, the box body is provided with an end cover in the axial direction of the developing roller, and the insulating member is rotatably connected to the end cover.

[0015] In one possible embodiment, the first electrode is provided with a first surface exposed to the outside of the end cap, the second electrode is provided with a second surface exposed to the outside of the end cap, the first surface is connected to the second surface, the first surface and the second surface are arranged coplanarly, the first surface is used to electrically connect to the first contact pin of the printer, and the second surface is used to electrically connect to the second contact pin of the printer.

[0016] In a possible implementation, in the axial direction of the developing roller, the insulating member is at least partially located on one side of the first surface and the second surface;

[0017] When the insulating member moves to the first position, in the axial direction of the developing roller, the projection of the insulating member does not overlap with the projection of the first surface and the projection of the second surface;

[0018] When the insulating member moves to the second position, in the axial direction of the developing roller, the projection of the insulating member at least partially overlaps with the projection of the first surface, and the projection of the insulating member does not overlap with the projection of the second surface;

[0019] When the insulating member moves to the third position, in the axial direction of the developing roller, the projection of the insulating member does not overlap with the projection of the first surface, and the projection of the insulating member at least partially overlaps with the projection of the second surface.

[0020] In a possible implementation, the insulating member includes a rotating portion and a shielding portion, the rotating portion is connected to the shielding portion, the rotating portion is rotatably connected to the end cover, and the shielding portion is used to shield the first contact pin or the second contact pin.

[0021] In a possible implementation manner, the end cover is provided with a rotation hole, the rotating portion is a rotation shaft, and the rotation shaft is rotatably provided in the rotation hole.

[0022] In a possible embodiment, at least one limit block is provided on the rotating portion, and in the axial direction of the developing roller, the limit block and the shielding portion are respectively located on both sides of the rotating hole, and the projection of the limit block at least partially overlaps with the projection of the end cover.

[0023] In a possible implementation, in the axial direction of the developing roller, a distance between the limiting block and the shielding portion is greater than a length of the rotating hole.

[0024] In a possible embodiment, a limiting protrusion is provided on a side of the shielding portion facing the end cover;

[0025] The end cover is provided with a first limiting hole, a second limiting hole and a third limiting hole;

[0026] When the insulating member moves to the first position, the limiting protrusion is inserted into the first limiting hole; when the insulating member moves to the second position, the limiting protrusion is inserted into the second limiting hole; when the insulating member moves to the third position, the limiting protrusion is inserted into the third limiting hole.

[0027] In a possible implementation, in the circumferential direction of the rotating hole, the first limiting hole, the second limiting hole, and the third limiting hole are arranged at intervals.

[0028] The processing box provided by the embodiment of the present invention has a first electrode connected to a second electrode, and an insulating part is provided on the box body. When the original toner is replaced with compatible toner and the humidity of the printing environment changes, the user selects different voltages received by the processing box from different contact pins of the printer by moving the position of the insulating part, thereby adjusting the voltages received by the developing roller, powder blade and powder feed roller of the processing box to control the printing quality and thus stabilize the printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 A schematic structural diagram of a process cartridge provided by an embodiment of the present utility model, wherein the insulating member of the process cartridge is located in a first position;

[0031] Figure 2 for Figure 1 A schematic diagram of the structure of the processing box after removing the insulating member and the end cover;

[0032] Figure 3 A schematic diagram of a first electrode and a second electrode connected together according to an embodiment of the present invention;

[0033] Figure 4 for Figure 1 A structural schematic diagram of the insulating member of the process cartridge when it is located at the second position;

[0034] Figure 5 for Figure 1 A schematic structural diagram of the insulating member of the process cartridge in FIG. 1 when the insulating member is located at a third position;

[0035] Figure 6 A schematic structural diagram of the end cover provided in an embodiment of the present utility model;

[0036] Figure 7 This is a schematic structural diagram of an insulating member provided in an embodiment of the present utility model.

[0037] Description of reference numerals:

[0038] 100-developing unit; 10-cartridge body;

[0039] 20-developing roller; 30-powder discharge knife;

[0040] 40-powder feeding roller; 51-first electrode;

[0041] 511-first surface; 52-second electrode;

[0042] 521- second side; 60- insulation member;

[0043] 61-rotating part; 611-limiting block;

[0044] 62-shielding portion; 621-limiting protrusion;

[0045] 70-end cover; 701-first limiting hole;

[0046] 702-second limiting hole; 703-third limiting hole;

[0047] 704-avoidance hole; 705-rotation hole;

[0048] 200-photosensitive unit. DETAILED DESCRIPTION

[0049] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0050] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0051] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0052] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0053] In the above description, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0054] As described in the background, when the original toner is replaced with compatible toner and the humidity of the printing environment changes, the laser printer's voltage adjustment scheme cannot ensure that the printed color meets the required print quality. The inventors have discovered that this problem arises because the reflectivity and charged particle size of compatible toner differ from those of the original toner. Therefore, when the original toner is replaced with compatible toner and the humidity of the printing environment changes, the laser printer's voltage adjustment scheme cannot ensure that the printed color meets the required print quality.

[0055] In order to solve the above problems, the process box provided in the embodiment of the present invention can adjust the voltage received by the process box to ensure the printing quality.

[0056] The processing box provided by the embodiment of the utility model is described in detail below with reference to specific embodiments.

[0057] The present invention provides a process cartridge installed in a printer, which may be an electronic copier, an electrophotographic printer (eg, a laser beam printer, an LED printer, etc.), a fax machine, a word processor, etc.

[0058] The printer has a first contact pin and a second contact pin.

[0059] The voltage provided by the first contact pin may be 430V, and the voltage provided by the second contact pin may be 320V.

[0060] See also Figure 1 and Figure 2 As shown, the process cartridge can be an integrated process cartridge that integrates a photosensitive unit 200 and a developing unit 100. The photosensitive unit 200 includes a photosensitive drum. During operation, an electrostatic latent image is formed on the photosensitive drum. The developing unit 100 is used to provide a developer for forming an image. When the developer adheres to the photosensitive drum to form an electrostatic latent image, the electrostatic latent image becomes visible.

[0061] The developing unit 100 includes a housing 10. The housing 10 is formed with a developer receiving chamber for receiving a developer. For example, the developer may be toner.

[0062] The cartridge body 10 is provided with a developing roller 20, a powder discharge blade 30, and a powder feed roller 40. Toner in the developer storage chamber is supplied to the developing roller 20 via the powder feed roller 40. The toner supplied to the developing roller 20 passes between the developing roller 20 and the powder discharge blade 30 and is adjusted to form a thin layer of toner of uniform thickness on the surface of the developing roller 20.

[0063] The developing unit 100 may include a first electrode 51. The first electrode 51 may be made of metal.

[0064] The first electrode 51 is mounted on the cartridge body 10 and contacts the developing roller 20. When the cartridge is mounted in a printer, the first electrode 51 corresponds to a first contact pin (not shown) of the printer, that is, the first electrode 51 is electrically connected to the first contact pin.

[0065] The developing unit 100 may include a second electrode 52. The second electrode 52 may be made of metal.

[0066] The second electrode 52 is mounted on the cartridge body 10 and contacts the powder blade 30 and the powder feed roller 40, respectively. When the process cartridge is installed in a printer, the second electrode 52 corresponds to the printer's second contact pin. Specifically, the second electrode 52 is electrically connected to the second contact pin, but cannot be electrically connected to the first contact pin, and the first electrode 51 cannot be electrically connected to the second contact pin. Optionally, the electrodes can be mounted on the cartridge body 10 by snap-fitting or gluing. The mounting method is not limited herein.

[0067] See also Figure 3 As shown, the second electrode 52 is connected to the first electrode 51. It can be understood that the second electrode 52 and the first electrode 51 form a common electrode. Figure 1 and Figure 3 As shown, when the processing box is installed in the printer, and the first contact pin is electrically connected to the first electrode 51 and the second contact pin is electrically connected to the second electrode 52, that is, when the processing box is installed in the printer, and the first contact pin and the second contact pin are electrically connected to the common electrode respectively, the voltage received by the common electrode can be 380V.

[0068] The developing unit 100 may include an insulating member 60. The insulating member 60 is made of an insulating material.

[0069] The insulating member 60 is movably connected to the box body 10. For example, the insulating member 60 can be connected to the box body 10 in a rotating manner or a sliding manner.

[0070] exist Figure 1The position of the middle insulating member 60 relative to the box body 10 is the first position; Figure 4 The position of the middle insulating member 60 relative to the box body 10 is the second position; Figure 5 The position of the middle insulating member 60 relative to the box body 10 is the third position.

[0071] The insulating member 60 can move relative to the box body 10 to a first position, a second position, or a third position.

[0072] For some examples, see Figure 1 As shown, the insulating member 60 is configured to move to a first position, electrically connecting the first electrode 51 to the first contact pin of the printer, and the second electrode 52 to the second contact pin of the printer. Specifically, when the original toner is replaced with compatible toner and the printer's printing environment is in the initial state, the user moves the insulating member 60 to the first position, electrically connecting the first electrode 51 to the first contact pin of the printer, and the second electrode 52 to the second contact pin of the printer. That is, the first contact pin and the second contact pin are respectively electrically connected to a common electrode, and the voltage received by the developing roller 20 is 380V, the voltage received by the powder blade 30 is 380V, and the voltage received by the powder feed roller 40 is 380V. At this point, the printed color meets the print quality, thereby ensuring print quality.

[0073] Original toner is toner produced by the printer's manufacturer. Compatible toner is toner produced by a manufacturer other than the printer's manufacturer.

[0074] For example, when the temperature of the printing environment is between 10°C and 35°C, the humidity is between 20% and 80%, and the air pressure is standard atmospheric pressure, the printing environment is in the initial state. When the temperature of the printing environment is between 10°C and 35°C, the humidity is less than 20%, and the air pressure is standard atmospheric pressure, the printer is in a low humidity state. When the temperature of the printing environment is between 10°C and 35°C, the humidity is greater than 80%, and the air pressure is standard atmospheric pressure, the printer is in a high humidity state.

[0075] Exemplarily, standard atmospheric pressure may be 101.325 kPa.

[0076] It should be noted that when the printing environment of the printer changes from the initial state to the low humidity state, the charge of the toner increases. At this time, the voltage received by the developing roller 20 is still 380V, the voltage received by the powder knife 30 is still 380V, and the voltage received by the powder feeding roller 40 is still 380V. As a result, the color printed by the printer is lighter compared to the initial state of the printing environment of the printer. It is necessary to reduce the charge of the toner to ensure the printing quality.

[0077] For some examples, see Figure 4As shown, the insulating member 60 is configured to move to a second position, thereby disconnecting the first electrode 51 from the printer's first contact pin and electrically connecting the second electrode 52 to the printer's second contact pin. Specifically, when the original toner is replaced with compatible toner and the printer's printing environment is in a low-humidity state, the user moves the insulating member 60 to the second position, where the insulating member 60 is positioned between the first electrode 51 and the first contact pin. This disconnects the first electrode 51 from the printer's first contact pin and electrically connects the second electrode 52 to the printer's second contact pin. This disconnects the first contact pin from the common electrode and connects the second contact pin to the common electrode. The voltage received by the developing roller 20 is 320V, the voltage received by the powder blade 30 is 320V, and the voltage received by the powder feed roller 40 is 320V. At this point, the toner charge can be reduced, and the printed color meets the print quality requirements, thereby ensuring print quality.

[0078] It should be noted that when the printing environment of the printer changes from the initial state to the high humidity state, the charge of the toner decreases. At this time, the voltage received by the developing roller 20 is still 380V, the voltage received by the powder knife 30 is still 380V, and the voltage received by the powder feeding roller 40 is still 380V, resulting in bottom gray or tailing phenomenon. The charge of the toner needs to be reduced to ensure the printing quality.

[0079] For some examples, see Figure 5 As shown, the insulating member 60 is configured to move to a third position, electrically connecting the first electrode 51 to the printer's first contact pin and disconnecting the second electrode 52 from the printer's second contact pin. Specifically, when replacing the original toner with compatible toner and the printer's printing environment is in a high-humidity state, the user moves the insulating member 60 to the third position, where the insulating member 60 is positioned between the second electrode 52 and the second contact pin. This electrically connects the first electrode 51 to the printer's first contact pin and disconnects the second electrode 52 from the printer's second contact pin. This means that the first contact pin is electrically connected to the common electrode, while the second contact pin is disconnected from the common electrode. The voltage received by the developing roller 20 is 430V, the voltage received by the powder blade 30 is 430V, and the voltage received by the powder feed roller 40 is 430V. At this point, the toner charge can be increased, and the printed color meets the print quality requirements, thereby ensuring print quality.

[0080] In the processing box provided by the embodiment of the present invention, the first electrode 51 is connected to the second electrode 52, and an insulating part 60 is provided on the box body 10. When the original toner is replaced with compatible toner and the humidity of the printing environment changes, the user moves the position of the insulating part 60 to select different voltages received by the processing box from different contact pins of the printer, thereby adjusting the voltages received by the developing roller 20, the powder discharge knife 30 and the powder feed roller 40 of the processing box to control the printing quality, thereby stabilizing the printing quality.

[0081] In one possible embodiment, the axial direction of the developing roller 20 is the X-axis. The housing 10 is provided with an end cap 70 in the axial direction of the developing roller 20, and the insulating member 60 is rotatably connected to the end cap 70. With this arrangement, the insulating member 60 can be rotated relative to the end cap 70 to move to the first position, the second position, or the third position.

[0082] The end cover 70 is detachably connected to the box body 10. In the axial direction of the developing roller 20, the end cover 70 is arranged on one side of the box body 10. The side of the end cover 70 close to the box body 10 is the inner side, and the side of the end cover 70 away from the box body 10 is the outer side.

[0083] See also Figure 6 As shown, the end cap 70 is provided with an escape hole 704. The first electrode 51 is partially exposed to the outside of the end cap 70 through the escape hole 704, and the second electrode 52 is partially exposed to the outside of the end cap 70 through the escape hole 704. Therefore, when the process cartridge is installed in the printer, the first contact pin can be electrically connected to the first electrode 51 and the second contact pin can be electrically connected to the second electrode 52.

[0084] In some examples, the first electrode 51 is provided with a first surface 511 exposed to the outside of the end cap 70, and the second electrode 52 is provided with a second surface 521 exposed to the outside of the end cap 70 (see Figure 3 shown).

[0085] The first surface 511 is connected to the second surface 521 , and the first surface 511 and the second surface 521 are arranged on the same plane, that is, the first surface 511 and the second surface 521 are located in the same plane.

[0086] The first surface 511 is used to electrically connect to a first contact pin of the printer, and the second surface 521 is used to electrically connect to a second contact pin of the printer. With this arrangement, when the process cartridge is installed in the printer, the first contact pin can be electrically connected to the first surface 511 of the first electrode 51, and the second contact pin can be electrically connected to the second surface 521 of the second electrode 52.

[0087] See also Figure 1 and Figure 3 As shown, when the insulating member 60 moves to the first position, the projection of the insulating member 60 does not overlap with either the projection of the first surface 511 or the projection of the second surface 521 in the axial direction of the developing roller 20. With this arrangement, when the process cartridge is installed in the printer, the insulating member 60 does not block the first and second contact pins, allowing the first electrode 51 to be electrically connected to the first contact pin of the printer, and the second electrode 52 to be electrically connected to the second contact pin of the printer. That is, the first and second contact pins are each electrically connected to a common electrode, and the voltage received by the developing roller 20, the powder blade 30, and the powder feed roller 40 is 380V.

[0088] See also Figure 3 and Figure 4 As shown, when the insulating member 60 moves to the second position, in the axial direction of the developing roller 20, the projection of the insulating member 60 at least partially overlaps with the projection of the first surface 511, and the projection of the insulating member 60 does not overlap with the projection of the second surface 521. With this arrangement, when the process cartridge is installed in the printer, the insulating member 60 blocks the first contact pin, but does not block the second contact pin. This allows the first electrode 51 to be disconnected from the first contact pin of the printer, while the second electrode 52 is electrically connected to the second contact pin of the printer. That is, the first contact pin is disconnected from the common electrode, while the second contact pin is electrically connected to the common electrode. The voltage received by the developing roller 20 is 320V, the voltage received by the powder discharge blade 30 is 320V, and the voltage received by the powder feed roller 40 is 320V.

[0089] See also Figure 3 and Figure 5 As shown, when the insulating member 60 moves to the third position, in the axial direction of the developing roller 20, the projection of the insulating member 60 does not overlap with the projection of the first surface 511, and the projection of the insulating member 60 at least partially overlaps with the projection of the second surface 521. With this arrangement, when the process cartridge is installed in the printer, the insulating member 60 does not block the first contact pin, but blocks the second contact pin. This allows the first electrode 51 to be electrically connected to the first contact pin of the printer, while the second electrode 52 is disconnected from the second contact pin of the printer. This means that the first contact pin is electrically connected to the common electrode, while the second contact pin is disconnected from the common electrode. The voltage received by the developing roller 20 is 430V, the voltage received by the powder blade 30 is 430V, and the voltage received by the powder feed roller 40 is 430V.

[0090] In one possible embodiment, in the axial direction of the developing roller 20, the insulating member 60 is at least partially located on one side of the first surface 511 and the second surface 521. Specifically, in the axial direction of the developing roller 20, the insulating member 60 is at least partially located on the side of the first surface 511 and the second surface 521 facing away from the box body 10.

[0091] For example, see Figure 7 As shown, the insulating member 60 includes a rotating portion 61 and a shielding portion 62 . The rotating portion 61 is connected to the shielding portion 62 . The rotating portion 61 is rotatably connected to the end cover 70 . The shielding portion 62 is used to shield the first contact pin or the second contact pin.

[0092] The shielding portion 62 may be a shielding plate. In the axial direction of the developing roller 20, the shielding plate is located on the side of the first and second surfaces 511 and 521 facing away from the housing 10. When the shielding plate is located between the first electrode 51 and the first contact pin, it shields the first contact pin, disconnecting the first electrode 51 from the first contact pin. When the shielding plate is located between the second electrode 52 and the second contact pin, it shields the second contact pin, disconnecting the second electrode 52 from the second contact pin.

[0093] The rotating portion 61 may be a rotating shaft. For example, see Figure 6 and Figure 7 As shown, the end cap 70 is provided with a rotation hole 705, the rotation shaft and the rotation hole 705 are both cylindrical, and the rotation shaft is rotatably arranged in the rotation hole 705. In this way, when the rotating part 61 rotates in the rotation hole 705, it can move to the first position, the second position or the third position.

[0094] The axis of the rotating shaft extends along the axial direction of the developing roller 20 .

[0095] The rotating portion 61 is provided with at least one stop block 611. The number of the stop block 611 can be one or more. For example, the rotating portion 61 is provided with multiple stop blocks 611, and the multiple stop blocks 611 are spaced apart along the circumferential direction of the rotating portion 61.

[0096] In the axial direction of the developing roller 20, the stopper 611 and the shielding portion 62 are respectively located on either side of the rotation hole 705, and the projection of the stopper 611 at least partially overlaps with the projection of the end cap 70. This arrangement allows the stopper 611 to limit the rotation portion 61 in the axial direction of the developing roller 20, preventing the rotation portion 61 from disengaging from the rotation hole 705 during rotation of the insulating member 60.

[0097] The shape of the limiting block 611 is not particularly limited, as long as it can limit the rotating portion 61 in the axial direction of the developing roller 20 .

[0098] In the axial direction of the developing roller 20 , the distance between the limiting block 611 and the shielding portion 62 may be greater than or equal to the length of the rotating hole 705 .

[0099] In one embodiment, the spacing between the stopper 611 and the shielding portion 62 in the axial direction of the developing roller 20 may be greater than the length of the rotating hole 705. In this manner, the insulating member 60 can move relative to the rotating hole 705 in the axial direction of the developing roller 20.

[0100] A limiting protrusion 621 may be provided on one side of the shielding portion 62 facing the end cover 70. For example, the limiting protrusion 621 may be cylindrical.

[0101] The end cap 70 is provided with a first limiting hole 701, a second limiting hole 702, and a third limiting hole 703. For example, the first limiting hole 701, the second limiting hole 702, and the third limiting hole 703 can all be cylindrical. In the circumferential direction of the rotating hole 705, the first limiting hole 701, the second limiting hole 702, and the third limiting hole 703 are spaced apart.

[0102] The limiting protrusion 621 can be inserted into the first limiting hole 701 , the second limiting hole 702 or the third limiting hole 703 .

[0103] See also Figure 1As shown, when the insulating member 60 moves to the first position, the limiting protrusion 621 is inserted into the first limiting hole 701. In this way, the limiting protrusion 621 is located in the first limiting hole 701, which can limit the insulating member 60 and prevent the insulating member 60 from leaving the first position.

[0104] Exemplarily, when the insulating member 60 is rotated from the second position to the first position, the insulating member 60 is first moved away from the box body 10 relative to the rotating hole 705 in the axial direction of the developing roller 20, so that the limiting protrusion 621 disengages from the second limiting hole 702. Then, the insulating member 60 is rotated to the first position, and then the insulating member 60 is moved closer to the box body 10 relative to the rotating hole 705 in the axial direction of the developing roller 20, so that the limiting protrusion 621 is inserted into the first limiting hole 701.

[0105] See also Figure 4 As shown, when the insulating member 60 moves to the second position, the limiting protrusion 621 is inserted into the second limiting hole 702. In this way, the limiting protrusion 621 is located in the second limiting hole 702, which can limit the insulating member 60 and prevent the insulating member 60 from leaving the second position.

[0106] Exemplarily, when the insulating member 60 rotates from the first position to the second position, the insulating member 60 is first moved away from the box body 10 relative to the rotating hole 705 in the axial direction of the developing roller 20, so that the limiting protrusion 621 disengages from the first limiting hole 701. Then, the insulating member 60 is rotated to the second position, and then the insulating member 60 is moved closer to the box body 10 relative to the rotating hole 705 in the axial direction of the developing roller 20, so that the limiting protrusion 621 is inserted into the second limiting hole 702.

[0107] See also Figure 5 As shown, when the insulating member 60 moves to the third position, the limiting protrusion 621 is inserted into the third limiting hole 703. In this way, the limiting protrusion 621 is located in the third limiting hole 703, which can limit the insulating member 60 and prevent the insulating member 60 from leaving the third position.

[0108] Exemplarily, when the insulating member 60 rotates from the first position to the third position, the insulating member 60 is first moved away from the box body 10 relative to the rotating hole 705 in the axial direction of the developing roller 20, so that the limiting protrusion 621 disengages from the first limiting hole 701. Then, the insulating member 60 is rotated to the third position, and then the insulating member 60 is moved closer to the box body 10 relative to the rotating hole 705 in the axial direction of the developing roller 20, so that the limiting protrusion 621 is inserted into the third limiting hole 703.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A process cartridge installed in a printer having a first contact pin and a second contact pin, characterized in that: The processing box includes: A box body, wherein the box body is provided with a developing roller (20), a powder discharging knife (30) and a powder feeding roller (40); a first electrode (51), the first electrode (51) being mounted on the box body, the first electrode (51) being in contact with the developing roller (20); a second electrode (52), the second electrode (52) being mounted on the box body, the second electrode (52) being in contact with the powder discharge knife (30) and the powder feeding roller (40) respectively, and the second electrode (52) being connected to the first electrode (51); an insulating member (60), the insulating member (60) being movably connected to the box body; The insulating member (60) is configured to move to a first position so that the first electrode (51) is electrically connected to a first contact pin of the printer, and the second electrode (52) is electrically connected to a second contact pin of the printer; The insulating member (60) is configured to move to a second position so that the first electrode (51) is disconnected from the first contact pin of the printer and the second electrode (52) is electrically connected to the second contact pin of the printer; The insulating member (60) is configured to move to a third position so that the first electrode (51) is electrically connected to the first contact pin of the printer and the second electrode (52) is disconnected from the second contact pin of the printer.

2. The process cartridge according to claim 1, wherein In the axial direction of the developing roller (20), the box body is provided with an end cover (70), and the insulating member (60) is rotatably connected to the end cover (70).

3. The process cartridge according to claim 2, wherein: The first electrode (51) is provided with a first surface (511) exposed to the outside of the end cover (70), and the second electrode (52) is provided with a second surface (521) exposed to the outside of the end cover (70), the first surface (511) and the second surface (521) are connected, the first surface (511) and the second surface (521) are arranged coplanar, the first surface (511) is used to be electrically connected to a first contact pin of the printer, and the second surface (521) is used to be electrically connected to a second contact pin of the printer.

4. The process cartridge according to claim 3, wherein: In the axial direction of the developing roller (20), the insulating member (60) is at least partially located on one side of the first surface (511) and the second surface (521); When the insulating member (60) moves to the first position, in the axial direction of the developing roller (20), the projection of the insulating member (60) does not overlap with the projection of the first surface (511) and the projection of the second surface (521); When the insulating member (60) moves to the second position, in the axial direction of the developing roller (20), the projection of the insulating member (60) at least partially overlaps with the projection of the first surface (511), and the projection of the insulating member (60) does not overlap with the projection of the second surface (521); When the insulating member (60) moves to the third position, in the axial direction of the developing roller (20), the projection of the insulating member (60) does not overlap with the projection of the first surface (511), and the projection of the insulating member (60) at least partially overlaps with the projection of the second surface (521).

5. The process cartridge according to any one of claims 2 to 4, wherein: The insulating member (60) comprises a rotating portion (61) and a shielding portion (62), wherein the rotating portion (61) is connected to the shielding portion (62), the rotating portion (61) is rotatably connected to the end cover (70), and the shielding portion (62) is used to shield the first contact pin or the second contact pin.

6. The process cartridge according to claim 5, wherein: The end cover (70) is provided with a rotation hole (705), and the rotating portion (61) is a rotation shaft, which is rotatably arranged in the rotation hole (705).

7. The process cartridge according to claim 6, wherein: At least one limiting block (611) is provided on the rotating portion (61); in the axial direction of the developing roller (20), the limiting block (611) and the shielding portion (62) are respectively located on both sides of the rotating hole (705); and the projection of the limiting block (611) at least partially overlaps with the projection of the end cover (70).

8. The process cartridge according to claim 7, wherein: In the axial direction of the developing roller (20), the distance between the limiting block (611) and the shielding portion (62) is greater than the length of the rotating hole (705).

9. The process cartridge according to claim 8, wherein A limiting protrusion (621) is provided on one side of the shielding portion (62) facing the end cover (70); The end cover (70) is provided with a first limiting hole (701), a second limiting hole (702) and a third limiting hole (703); When the insulating member (60) moves to the first position, the limiting protrusion (621) is inserted into the first limiting hole (701); when the insulating member (60) moves to the second position, the limiting protrusion (621) is inserted into the second limiting hole (702); when the insulating member (60) moves to the third position, the limiting protrusion (621) is inserted into the third limiting hole (703).

10. The process cartridge according to claim 9, wherein In the circumferential direction of the rotating hole (705), the first limiting hole (701), the second limiting hole (702) and the third limiting hole (703) are arranged at intervals.

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