An image forming assembly, a process cartridge, and an image forming apparatus

Abstract

The embodiment of the present application provides an imaging assembly, a process cartridge and an image forming device. The imaging assembly comprises a photosensitive drum; a magnetic piece, which is displaced with rotation of the photosensitive drum; the magnetic piece is used for generating an induced current by relative displacement with a magnetic induction piece when the photosensitive drum rotates; and the induced current is used for determining whether the imaging assembly is expected. The embodiment of the present application realizes that whether the photosensitive drum normally works and whether the imaging assembly is expected are determined through the induced current, and then whether the process cartridge is expected is determined.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of electronic imaging, and particularly relate to an imaging assembly, a process cartridge and an image forming apparatus.

BACKGROUND

[0002] With the development of electronic imaging technology, image forming apparatuses have been widely applied. An imaging assembly can be detachably installed on an image forming apparatus. The imaging assembly can include an optical photoconductor (OPC). The optical photoconductor has a great influence on image quality. If the optical photoconductor cannot work normally, it will lead to poor image quality. However, in the related art, it is not possible to determine whether the optical photoconductor works normally, and it is not possible to determine whether the imaging assembly meets the expectation.

SUMMARY

[0003] Therefore, embodiments of the present application provide an imaging assembly, a process cartridge and an image forming apparatus, which are used to determine whether the optical photoconductor works normally, whether the imaging assembly meets the expectation, and whether the process cartridge meets the expectation.

[0004] In a first aspect, an imaging assembly is provided, comprising:

[0005] an optical photoconductor;

[0006] a magnetic member, which is displaced with rotation of the optical photoconductor;

[0007] the magnetic member is configured to generate an induced current by relative displacement with a magnetic induction member when the optical photoconductor rotates; and the induced current is configured to determine whether the imaging assembly meets the expectation.

[0008] In a possible implementation, the imaging assembly further comprises a detection member, which is configured to output a detection current corresponding to the induced current, the detection current increases with an increase of a rotation speed of the optical photoconductor, and the detection current is configured to determine whether the imaging assembly meets the expectation.

[0009] In a possible implementation, the imaging assembly further comprises an electricity-eliminating member, which is configured to receive the induced current and eliminate electricity on an outer surface of the optical photoconductor.

[0010] In a possible implementation, the electricity-eliminating member is an electricity-eliminating lamp, which is configured to receive the induced current and emit light to irradiate the outer surface of the optical photoconductor, so as to eliminate electricity on the outer surface of the optical photoconductor.

[0011] In a possible implementation, the detection member is a photoresistor, and the detection current increases with an increase of light intensity of the electricity-eliminating lamp.

[0012] In a possible implementation, the imaging assembly further includes a light guide strip, the light guide strip is arranged along an axial direction of the photosensitive drum, and the light guide strip is configured to receive light emitted by the electricity-eliminating lamp to irradiate an outer surface of the photosensitive drum.

[0013] In a possible implementation, the light guide strip includes a first light guide portion and a second light guide portion, the first light guide portion is arranged opposite to the photosensitive drum, and the second light portion is arranged opposite to the detection member.

[0014] In a possible implementation, the light guide strip is provided with a plurality of light guide points on a side close to the photosensitive drum, and the light guide points include protrusions and / or recesses.

[0015] In a possible implementation, the imaging assembly further includes a light collecting member, the light collecting member is arranged between the electricity-eliminating member and the light guide strip, the light collecting member includes a light inlet end and a light outlet end, the light collecting member is configured to converge light entering from the light inlet end to the light outlet end and guide the light out, the light inlet end is configured to receive light emitted by the electricity-eliminating member, and the light outlet end is configured to guide the light out to the light guide strip.

[0016] In a possible implementation, the light guide strip is provided with a reflecting member on a side away from the photosensitive drum, and the reflecting member is configured to reflect light.

[0017] In a possible implementation, the imaging assembly further includes a magnetic induction member, the magnetic induction member cooperates with the magnetic member, and the magnetic induction member generates an induced current through relative displacement between the magnetic induction member and the magnetic member.

[0018] In a possible implementation, the imaging assembly further includes a driving circuit, and the magnetic induction member is electrically connected to the electricity-eliminating member through the driving circuit.

[0019] In a possible implementation, the driving circuit includes a rectifier filter circuit.

[0020] In a possible implementation, the imaging assembly further includes a carrier, and the magnetic induction member and the driving circuit are arranged on the carrier.

[0021] In a possible implementation, the carrier includes a body portion and an extension portion extending from the body portion, the magnetic induction member is arranged on the body portion, and the driving circuit is arranged on the extension portion.

[0022] In a possible implementation, the magnetic induction member is provided in a plurality of numbers, and the plurality of magnetic induction members are arranged around a center point of the body portion and sequentially arranged along a circumferential direction of the center point of the body portion.

[0023] In a possible implementation, the carrier further comprises a power recovery device, the power recovery device is electrically connected with the magnetic induction piece and the electricity elimination piece respectively, the magnetic induction piece delivers the induced current to the electricity elimination piece through the power recovery device, and the power recovery device is used for storing the induced current or preventing the induced current from being delivered to the electricity elimination piece when the photosensitive drum does not need to be electrified.

[0024] In a possible implementation, the imaging assembly further comprises a housing, the photosensitive drum is rotatably arranged on the housing, and the magnetic induction piece is arranged on the housing, so that the magnetic piece and the magnetic induction piece generate the induced current by relative displacement when the photosensitive drum rotates.

[0025] In a possible implementation, the imaging assembly further comprises a driving component, at least one of the magnetic pieces is arranged on the driving component, and the magnetic induction piece is arranged opposite to the magnetic pieces and can be relatively displaced.

[0026] The driving component rotates synchronously with the photosensitive drum.

[0027] In a possible implementation, the driving component is a gear.

[0028] In a possible implementation, the magnetic pieces and the photosensitive drum rotate around the same axis.

[0029] The second aspect provides a processing cartridge, comprising the imaging assembly in the first aspect or any possible implementation of the first aspect.

[0030] The third aspect provides an image forming apparatus, comprising the imaging assembly in the first aspect or any possible implementation of the first aspect.

[0031] In a possible implementation, the imaging assembly adopts the imaging assembly in the first aspect, and the image forming apparatus further comprises a main body and a detection piece, the imaging assembly is arranged to be detachably mounted on the main body, the detection piece is arranged on the main body, the detection piece is used to output a detection current corresponding to the induced current, the detection current increases with the increase of the rotating speed of the photosensitive drum, and the detection current is used to determine whether the imaging assembly meets the expectation.

[0032] In a possible implementation, the imaging assembly further comprises an electricity elimination piece, the electricity elimination piece is used to receive the induced current and eliminate electricity on the outer surface of the photosensitive drum.

[0033] In the technical scheme provided by the embodiment of the present application, the magnetic member is displaced along with the rotation of the photosensitive drum, and the magnetic member is used to generate an induced current by relative displacement with the magnetic induction member when the photosensitive drum rotates, so that it is determined whether the photosensitive drum works normally, whether the imaging assembly meets the expectation, and further whether the processing cartridge meets the expectation. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 A structural schematic diagram of an imaging assembly provided by the embodiment of the present application is shown in FIG. 1.

[0035] Figure 2 A structural schematic diagram of a driving component provided by the embodiment of the present application is shown in FIG. 2.

[0036] Figure 3 A structural schematic diagram of another imaging assembly provided by the embodiment of the present application is shown in FIG. 3.

[0037] Figure 4 A structural schematic diagram of another imaging assembly provided by the embodiment of the present application is shown in FIG. 4.

[0038] Figure 5 A structural schematic diagram of another imaging assembly provided by the embodiment of the present application is shown in FIG. 5.

[0039] Figure 6 A structural schematic diagram of a magnetic induction member and a current elimination member is shown in FIG. 6. Figure 5

[0040] A flow chart of a current elimination method provided by the embodiment of the present application is shown in FIG. 7. Figure 7

[0041] A working principle schematic diagram of the current elimination member in the embodiment of the present application is shown in FIG. 8. Figure 8

[0042] A working principle schematic diagram of a rectifier filter circuit in the embodiment of the present application is shown in FIG. 9. Figure 9

[0043] A structural schematic diagram of another imaging assembly provided by the embodiment of the present application is shown in FIG. 10. Figure 10

DETAILED DESCRIPTION

[0044] In order to better understand the technical scheme of the present application, the embodiments of the present application are described in detail below with reference to the drawings.

[0045] It should be clear that the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0046] ​The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the application and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0047] It should be understood that the term "and / or" as used herein merely describes associated objects, which can exist in three relationships, for example, A and / or B, which can represent three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0048] Figure 1 A structural schematic diagram of an imaging assembly provided by an embodiment of the application is shown in Figure 1 The imaging assembly includes a photosensitive drum 20 and a magnetic member 21. The magnetic member 21 is displaced along with the rotation of the photosensitive drum 20. The magnetic member 21 is used to generate an induced current by relative displacement with a magnetic induction member when the photosensitive drum 20 rotates, and the induced current is used to determine whether the imaging assembly meets the expectation.

[0049] As an option, at least one magnetic member 21 can be arranged on the photosensitive drum 20, for example, the at least one magnetic member 21 can be located at a first end of the photosensitive drum 20. The magnetic member 21 rotates around the same axis as the photosensitive drum 20. In the embodiment of the application, the magnetic member 21 can include a permanent magnet or an electromagnet.

[0050] The imaging assembly further includes a driving component 22, at least one magnetic member 21 is arranged on the driving component 22, a magnetic induction member is arranged opposite to the magnetic member 21 and can be relatively displaced, and the driving component 22 rotates synchronously with the photosensitive drum 20, thereby realizing transmission cooperation with the photosensitive drum 20. Figure 2 A structural schematic diagram of a driving component provided by an embodiment of the application is shown in Figure 1 and Figure 2 The driving component 22 is arranged at a first end of the photosensitive drum 20, and the magnetic member 21 is arranged on the driving component 22. The photosensitive drum 20 is in a cylindrical shape; the driving component 22 is a gear, and is designed in a cylindrical shape to match the shape of the photosensitive drum 20. In actual application, the photosensitive drum 20 and the driving component 22 can also be arranged in other shapes, which are not listed one by one here. As shown in Figure 2 The number of the magnetic members 21 arranged on the driving component 22 can be multiple, and as an option, the multiple magnetic members 21 are evenly arranged around the center point of the driving component 22. Figure 2 Eight magnetic members 21 are shown in the center, which are evenly arranged around the center point of the driving component 22.

[0051] In the technical solution of the imaging component provided in this embodiment of the invention, the magnetic component is displaced as the photosensitive drum rotates. The magnetic component is used to generate an induced current by moving relative to the magnetic induction component when the photosensitive drum rotates. If the photosensitive drum does not rotate, no induced current will be generated. Therefore, the induced current can characterize whether the photosensitive drum rotates, thereby realizing the determination of whether the photosensitive drum is working properly and whether the imaging component meets expectations by the induced current, and further determining whether the processing box meets expectations.

[0052] During the working or testing phase, the photosensitive drum needs to rotate. If no induced current is generated at this time, it means that the photosensitive drum is not rotating, and therefore the photosensitive drum is not working properly. As a result, the work or test cannot be completed, and the imaging components and processing box do not meet expectations.

[0053] In addition, the magnitude of the induced current will change accordingly depending on the rotation speed of the photosensitive drum. For example, as the working or testing phase changes, the rotation speed of the photosensitive drum may change from low speed to high speed. If the photosensitive drum is working normally or during testing, the speed at which the induction coil cuts the magnetic field lines increases, and the generated induced current will also increase. However, if the photosensitive drum is not working normally or during testing, the trend of the generated induced current may not be as expected. For example, the induced current may not change; or the induced current may decrease; or the amount of increase in the induced current may not be as expected. All of these can be used to determine that the photosensitive drum is not working normally and that the imaging component and processing box are not performing as expected.

[0054] In addition, the rotation speed of the photosensitive drum varies when the image forming apparatus is in different working or testing stages, and the induced current also has a corresponding numerical range. Therefore, by detecting the value of the induced current when the image forming apparatus is in a certain working or testing stage and comparing it with the expected numerical range of the induced current under the above working or testing stage, if the detected induced current does not conform to the above numerical range, it can be considered that the photosensitive drum is not working properly, and the imaging component and processing box do not meet expectations.

[0055] Figure 3 A schematic diagram of another imaging component provided in an embodiment of the present invention is shown below. Figure 3 As shown, the imaging component in this embodiment is Figure 1 The imaging assembly shown also includes a detection element 5, which is used to output a detection current corresponding to the induced current. The detection current increases with the increase of the rotation speed of the photosensitive drum 20. The detection current is used to determine whether the imaging assembly meets expectations.

[0056] The detection element 5 is electrically connected to the processing cartridge chip 6. The detection element 5 may include a photosensitive element, such as a photoresistor or a photodiode. The detection element 5 can be electrically connected to the processing cartridge chip 6 via a wire or metal contact. In this embodiment of the invention, the processing cartridge chip 6 is detachably mounted on the processing cartridge, and the processing cartridge chip 6 is also electrically connected to the main control chip of the image forming apparatus. It should be noted that the main control chip is not specifically shown in the figure. To ensure that the light emitted by the anti-static element 1 can illuminate the detection element 5, the detection element 5 can be located at the second end of the photosensitive drum 20, wherein the second end is positioned opposite to the first end.

[0057] like Figure 3 As shown, as an optional solution, the second end of the photosensitive drum 20 may also be provided with a driving component, so as to drive the photosensitive drum 20 to rotate together with the driving component provided at the first end. The driving component provided at the second end can be the same as the driving component provided at the first end, and the driving component provided at the second end is a gear. Figure 3 The driving component set at the second end is not shown in detail.

[0058] When illuminated by light, the detection element 5 generates a detection current corresponding to the induced current and outputs this detection current to the processing chip 6. This detection current is a photocurrent. The processing chip 6 then converts the induced current into an analog voltage and outputs the analog voltage to the main control chip, allowing the main control chip to detect status information based on the analog voltage.

[0059] The magnitude of the detection current generated by the detection element 5 is directly proportional to the rotational speed of the photosensitive drum 20. The higher the rotational speed of the photosensitive drum 20, the higher the detection current generated by the detection element 5, and consequently, the higher the analog voltage converted from the induced current. Conversely, the lower the rotational speed of the photosensitive drum 20, the lower the detection current generated by the detection element 5, and consequently, the lower the analog voltage converted from the detection current. The status information detected by the main control chip differs depending on the analog voltage. This status information may include first status information or second status information. Specifically, the main control chip can detect the first status information corresponding to a larger analog voltage A; and / or, the main control chip can detect the second status information corresponding to a smaller analog voltage B. For example, as the photosensitive drum 20 rotates from stationary to slow rotation, the analog voltage received by the main control chip slowly increases from 0V to 5V, and the second status information can be detected based on this analog voltage; and / or, as the photosensitive drum 20 rotates from slow to fast rotation, the analog voltage received by the main control chip slowly increases from 5V to 10V, and the first status information can be detected based on this analog voltage. Therefore, when the main control chip detects the first state information, it indicates that the detection current generated by the detection element 5 is relatively large, while when the main control chip detects the second state information, it indicates that the detection current generated by the detection element 5 is relatively small. However, as long as the main control chip can receive the analog voltage, and thus detect the first and / or second state information based on the analog voltage, it can determine whether the processing box meets expectations regardless of the magnitude of the analog voltage.

[0060] In this embodiment of the invention, by setting a detection device in the processing box, the main control chip can detect the status information based on the detection current generated by the detection device, and then determine that the processing box can be used based on the status information. The processing box and the image forming apparatus are matched.

[0061] When determining whether the photosensitive drum is working properly, the value of the induced current can be obtained directly. Alternatively, the induced current can be used for other functions, and the effects of those functions can be detected. For example, if the induced current is used for light emission, the magnitude of the induced current can be indirectly determined by detecting the light intensity; or if the induced current is used for heating, the magnitude of the induced current can be indirectly determined by detecting the heating temperature. It is understandable that the methods for indirectly determining the magnitude of the induced current are not limited to these two.

[0062] Figure 4 A schematic diagram of another imaging component provided in an embodiment of the present invention is shown below. Figure 4 As shown, the imaging component in this embodiment is Figure 3 The imaging assembly shown also includes a static elimination component 1, which receives the induced current and eliminates static electricity on the outer surface of the photosensitive drum 20.

[0063] The electric eliminator 1 can eliminate the electric charge on the photosensitive drum 20 in various ways. As an optional solution, the electric eliminator 1 can eliminate the electric charge on the photosensitive drum 20 by exposing the photosensitive drum 20 to light. Specifically, the electric eliminator 1 is an electric eliminator lamp, which emits light when the induced current is supplied to the electric eliminator 1, and the light is used to eliminate the electric charge on the photosensitive drum 20.

[0064] In the embodiment of the present application, the electric eliminator 1 is taken as an electric eliminator lamp, which is used to receive the induced current and emit light to irradiate the outer surface of the photosensitive drum 20, so as to eliminate the electric charge on the outer surface of the photosensitive drum 20.

[0065] The light emitted by the electric eliminator 1 irradiates the detecting element 5. Since the light intensity of the electric eliminator 1 is proportional to the rotating speed of the photosensitive drum 20, and the detecting current generated by the detecting element 5 is proportional to the light intensity of the electric eliminator 1, the detecting current generated by the detecting element 5 is proportional to the rotating speed of the photosensitive drum 20. For example, the electric eliminator 1 is an electric eliminator lamp, and the detecting element 5 can be a photoresistor, and the detecting current increases with the increase of the light intensity of the electric eliminator lamp.

[0066] The imaging assembly further comprises a light guide strip 301, which is arranged along the axial direction of the photosensitive drum 20. The electric eliminator 1 is arranged opposite to the light guide strip 301, and the light emitted by the electric eliminator 1 irradiates the detecting element 5 through the light guide strip 301. The light guide strip 301 is used to guide the light emitted by the electric eliminator 1 to the photosensitive drum 20 and eliminate the electric charge on the photosensitive drum 20. Specifically, the light guide strip 301 is used to receive the light emitted by the electric eliminator lamp and irradiate the outer surface of the photosensitive drum 20. The light guide strip 301 is arranged opposite to the outer surface of the photosensitive drum 20, wherein the outer surface of the photosensitive drum 20 is the lateral surface of the cylindrical photosensitive drum 20. The material of the light guide strip 301 can include polymethyl methacrylate (PMMA), Polycarbonate (PC) or polyurethane (PU). In the embodiment of the present application, the light guide strip 301 can be designed as a flat shape, which reduces the occupied space, so as to further realize the miniaturization design of the process cartridge. In the embodiment of the present application, compared with the solution of using a light guide column in the prior art, the light guide strip 301 is designed as a flat shape instead of a light guide column, and the hole for placing the light guide column is not needed on the process cartridge, so as to further realize the miniaturization design of the process cartridge.

[0067] The light guide strip 301 is provided with a plurality of light guide points on the side close to the photosensitive drum 20, and the light guide points include protrusions and / or recesses. The light guide points are integrally formed with the light guide strip 301. The light guide points are used to convert the incident light into a surface light source after infinite refraction in the light guide strip 301, and then the light is uniformly emitted from the side of the light guide strip 301 close to the photosensitive drum 20 and irradiates the outer surface of the photosensitive drum 20, so that the light is refracted and diffused into a surface light source in the light guide strip 301, the coating on the outer surface of the photosensitive drum 20 is uniformly charged and discharged, and the service life of the photosensitive drum 20 is prolonged.

[0068] The imaging assembly further includes a light collecting member 302 located between the electricity eliminating member 1 and the light guide strip 301, and the light collecting member 302 includes a light entering end and a light collecting end. The light collecting member 302 is used to converge the light entering from the light entering end to the light collecting end and guide the light out. The light entering end is used to receive the light emitted by the electricity eliminating member 1, and the light collecting end is used to guide the light out to the light guide strip 301. The light guide strip 301 guides the light to irradiate the outer surface of the photosensitive drum 20, and the residual charge on the outer surface of the photosensitive drum 20 is uniformly guided away after being irradiated, so that the residual charge on the outer surface of the photosensitive drum 20 is eliminated. In the embodiment of the present application, the structures of the electricity eliminating member 1, the light collecting member 302 and the light guide strip 301 can almost completely fit together, thereby preventing the light leakage phenomenon. As an optional solution, the light collecting member 302 can be a lens.

[0069] The side of the light guide strip 301 away from the photosensitive drum 20 is provided with a reflecting member 303 for reflecting the light. The reflecting member 303 can reflect the light in the light guide strip 301 back to the light guide strip 301, so that the light guide strip 301 can irradiate as much light as possible to the photosensitive drum 20, thereby enhancing the light intensity of the outer surface of the photosensitive drum 20. In addition, if the light of the light guide strip 301 overflows, it will cause abnormal exposure of the photosensitive drum 20 and produce print defects. In the embodiment of the present application, the reflecting member 303 is arranged on one side of the light guide strip 301, which can reflect the light back to the light guide strip 301, effectively preventing the light from overflowing, thereby avoiding the print defects caused by abnormal exposure of the photosensitive drum 20. As an optional solution, the reflecting member 303 is a reflecting film.

[0070] The light guide strip 301 includes a first light guide portion and a second light guide portion, and the first light guide portion is arranged opposite to the photosensitive drum 20, and the second light guide portion is arranged opposite to the detection member 5. The light guide strip 301 is divided into two parts by a dashed line, one part is the first light guide portion, and the other part is the second light guide portion. The second light guide portion is a structure extending from the first light guide portion along the length direction of the photosensitive drum 20, and the first light guide portion and the second light guide portion can be integrally formed. The light emitted by the first light guide portion can irradiate to the photosensitive drum 20, and the light emitted by the second light guide portion can irradiate to the detection member 5.

[0071] As shown in Figure 4 , when the photosensitive drum 20 and the magnetic member 21 rotate, the electricity-eliminating member 1 emits light and irradiates the emitted light to the light collector 302, the light collector 302 converges the light to the light guide strip 301, the light guide strip 301 guides the light so that the light emitted by the first light guide part of the light guide strip 301 irradiates to the photosensitive drum 20 and the light emitted by the second light guide part of the light guide strip 301 irradiates to the detection member 5. When the light irradiates to the detection member 5, the optical property of the detection member 5 is changed. The detection member 5 generates a detection current under the irradiation of the light and transmits the detection current to the process cartridge chip 6, the light detection circuit of the process cartridge chip 6 converts the detection current into an analog voltage and outputs the analog voltage to the master control chip.

[0072] As an alternative, as shown in Figure 4 , the process cartridge further comprises a cleaning blade, the cleaning blade comprises a transparent adhesive tape 304 and a metal member, the transparent adhesive tape 304 is arranged on the side of the light guide strip 301 close to the photosensitive drum 20, for example, the material of the transparent adhesive tape 304 is PU. The light emitted from the light guide strip 301 irradiates to the outer surface of the photosensitive drum 20 through the transparent adhesive tape 304. It should be noted that the metal member is not specifically shown in Figure 4 , and the arrangement position of the metal member does not affect the propagation of the light.

[0073] Figure 5 Another structure schematic view of an imaging assembly provided by the embodiment of the present application is shown in Figure 6 , which is Figure 5 a structure schematic view of a magnetic induction member and an electricity-eliminating member in the embodiment of the present application, as shown in Figure 5 and Figure 6 , the imaging assembly in the embodiment of the present application further comprises a magnetic induction member 2 on the basis of the imaging assembly shown in Figure 4 , the magnetic induction member 2 cooperates with the magnetic member 21, and the relative displacement between the magnetic induction member 2 and the magnetic member 21 makes the magnetic induction member 2 generate an induced current.

[0074] The electricity-eliminating member 1 is electrically connected with the magnetic induction member 2, the magnetic induction member 2 transmits the induced current to the electricity-eliminating member 1, and the electricity-eliminating member 1 is used for eliminating electricity of the photosensitive drum 20.

[0075] The imaging assembly further comprises a driving circuit 4, and the magnetic induction member 2 is electrically connected with the electricity-eliminating member 1 through the driving circuit 4.

[0076] The imaging assembly further comprises a carrier 3, and the magnetic induction member 2 and the driving circuit 4 are arranged on the carrier 3. As shown in Figure 6 , the magnetic induction member 2 and the driving circuit 4 are arranged on the carrier 3, the positive phase end (+) and the negative phase end (-) of the magnetic induction member 2 are connected to the input end of the driving circuit 4, and the output end of the driving circuit 4 is connected to the electricity-eliminating member 1. As shown in Figure 6 , the electricity-eliminating member 1 is arranged on the carrier 3.

[0077] As shown in Figure 5 and Figure 6 , the carrier 3 comprises a body part 31 and an extension part 32 extending from the body part 31, the magnetic induction piece 2 is arranged on the body part 31, and the driving circuit 4 is arranged on the extension part 32. Wherein, part of the structure of the extension part 32 is arranged on the body part 31, and the other part of the extension part 32 extends out of the body part 31. The electric field elimination piece 1 is arranged at one end of the extension part 32 extending out of the body part 31, so that the electric field elimination piece 1 is arranged outside the body part 31, and the position of the electric field elimination piece 1 is adjusted by adjusting the length of the extension part 32.

[0078] As shown in Figure 6 , the number of the magnetic induction piece 2 is multiple, and the multiple magnetic induction pieces 2 are arranged around the center point of the body part 31 and arranged in sequence along the circumference of the center point of the body part 31. The shape of the body part 31 can be arranged according to the product design requirement, for example, the cross-sectional shape of the body part 31 can be circular or square, as shown in Figure 5 , in the embodiment of the present application, in order to match the shape design of the driving part of the photosensitive drum 20, the cross-sectional shape of the body part 31 is circular, preferably, Figure 6 six magnetic induction pieces 2 are shown, and the six magnetic induction pieces 2 are uniformly arranged around the center point of the body part 31. Each magnetic induction piece 2 comprises a positive phase end (+) and a negative phase end (-), and the positive phase end (+) and the negative phase end (-) of each magnetic induction piece 2 are connected to the input end of the driving circuit 4. It should be noted that: Figure 6 the connection line between the positive phase end (+) and the negative phase end (-) of the magnetic induction piece 2 and the driving circuit 4 is not specifically drawn.

[0079] As shown in Figure 5 and Figure 6 , the carrier 3 is a flexible printed circuit (FPC), and the body part 31 and the extension part 32 are both FPCs. The magnetic induction piece 2 is a magnetic induction coil, a plurality of printed circuit board (PCB) coils are uniformly and densely etched on the body part 31, and the PCB coil is used as the magnetic induction coil; the driving circuit 4 can be designed to be small in size, and the driving circuit 4 is attached to the extension part 32. In the embodiment of the present application, the circuit board adopts the flexible circuit board, which can realize the flat design of the electric field elimination piece 1, thereby reducing the structure space of the processing cartridge.

[0080] As shown in Figure 6As shown in the figure, the driving circuit 4 comprises a rectification filter circuit. The magnetic induction piece 2 can generate an induced electromotive force E, for example, a plurality of magnetic induction pieces 2 can generate n induced electromotive forces, the n induced electromotive forces comprising induced electromotive forces E1, E2, …, En, wherein n is a positive integer. The rectification filter circuit rectifies and filters the induced electromotive force generated by the magnetic induction piece 2 to form a direct current power supply voltage, and outputs the direct current power supply voltage to the electricity consumption piece 1, and the electricity consumption piece 1 emits light under the driving of the direct current power supply voltage. As an optional solution, the electricity consumption piece 1 is an LED.

[0081] The number of magnetic pieces 21 and the number of magnetic induction pieces 2 can be the same or different. In the embodiment of the present application, eight magnetic pieces 21 and six magnetic induction pieces 2 are taken as an example for description. As shown in the figures, Figure 2 Figure 5 and Figure 6 As shown in the figures, the magnetic piece 21 can be inlaid in the driving component 22. When the driving component 22 rotates, the magnetic piece 21 rotates around the same axis as the photosensitive drum 20. When the magnetic piece 21 rotates, a magnetic field is generated, and the magnetic induction piece 2 cuts the magnetic field to generate an induced electromotive force, i.e. the magnetic induction piece 2 cuts the magnetic field to generate an induced current.

[0082] As shown in the figures, Figure 5 Figure 6 The carrier 3 is arranged opposite to the first end of the photosensitive drum 20 to arrange the magnetic induction piece 2 opposite to the magnetic piece 21. Specifically, the body part 31 of the carrier 3 is arranged opposite to the first end of the photosensitive drum 20 to arrange the magnetic induction piece 2 opposite to the magnetic piece 21. The end of the extension part 32 of the carrier 3, which is provided with the electricity consumption piece 1, extends to the light entrance of the light guide strip 301, so that the electricity consumption piece 1 is arranged at the light entrance of the light guide strip 301. It should be noted that the magnetic induction piece 2 is not specifically shown in the figure. Figure 5

[0083] As shown in the figures, Figure 5 Figure 6 The center point of the carrier 3 and the center point of the driving component 22 are both located on the extension line of the center line of the photosensitive drum 20.

[0084] The imaging assembly further comprises a shell, and the photosensitive drum 20 is rotatably arranged on the shell, and the magnetic induction piece 2 is arranged on the shell. When the photosensitive drum 20 rotates, the magnetic piece 2 moves opposite to the magnetic induction piece 21 to generate an induced current. It should be noted that the shell is not specifically shown in the figure.

[0085] The following specific example describes in detail the electricity consumption method of the imaging assembly in the embodiment of the present application. Figure 7 The flow chart of the electricity consumption method provided in the embodiment of the present application, Figure 8 The working principle diagram of the electricity consumption piece in the embodiment of the present application, Figure 9 The working principle diagram of the rectification filter circuit in the embodiment of the present application. The following describes the electricity consumption method of the imaging assembly in the embodiment of the present application in combination with​​​​Figures 7 to 9 The power-off method of the imaging assembly is described in detail. As shown in Figure 7 , the power-off method comprises the following steps.

[0086] Step 102, the magnetic induction piece is relatively displaced with the magnetic piece, so that the magnetic induction piece generates an induced current.

[0087] As shown in Figure 6 , Figure 8 , the driving component 22 rotates to drive the photosensitive drum 20 to rotate and drive the magnetic piece 21 to rotate. Since the magnetic piece 21 rotates, the magnetic induction piece 2 is relatively displaced with the magnetic piece 21, so that the magnetic induction piece 2 generates an induced current.

[0088] Specifically, as shown in Figure 5 , Figure 6 , Figure 8 , the magnetic piece 21 rotates to generate a changing magnetic field, and the magnetic induction piece 2 cuts the magnetic field to generate an induced electromotive force E, that is, the magnetic induction piece 2 cuts the magnetic field to generate an induced current, in other words, the magnetic induction piece 2 cuts the magnetic lines of force in the magnetic field to generate an induced current, wherein the induced current is an alternating current.

[0089] As an optional solution, as shown in Figure 5 , Figure 8 , the driving circuit 4 comprises a rectification filtering circuit, and the power-off piece 1 is an LED. The driving circuit 4 rectifies and filters the induced current to generate a supply voltage VCC, wherein the supply voltage is a direct current supply voltage. The driving circuit 4 provides power to the power-off piece 1 through the supply voltage VCC, so as to realize that the magnetic induction piece 2 outputs the induced current to the power-off piece 1 through the driving circuit 4. Specifically, as shown in Figure 8 , the driving circuit 4, the current-limiting resistor R and the power-off piece 1 are connected in series, the driving circuit 4 outputs the supply voltage VCC and supplies power to the power-off piece 1 through the current-limiting resistor R, so as to realize that the magnetic induction piece 2 outputs the induced current to the power-off piece 1 through the driving circuit 4 to drive the power-off piece 1 to emit light.

[0090] In addition, the driving circuit 4 can further comprise an amplification circuit and / or a voltage stabilizing circuit, which can amplify and stabilize the current.

[0091] As shown in Figure 5 , Figure 6 , Figure 9As shown, after the photosensitive drum 20 rotates one circle, the number n of the induced electromotive force E generated by the magnetic induction piece 2 is a x b, wherein a is the number of the magnetic induction piece 2, and b is the number of the magnetic piece 21. After the driving circuit 4 rectifies the a x b induced electromotive force E generated by the magnetic induction piece 2, 2a x b induced electromotive force E is obtained, and then the driving circuit 4 filters the 2a x b induced electromotive force E to obtain the power supply voltage VCC. The more the number of the induced electromotive force E in unit time, the more stable the power supply voltage VCC output after filtering. The induced electromotive force E is determined by the magnetic flux change amount of the magnetic induction piece 2 in unit time, that is, E = AQ / At, wherein AQ is the magnetic flux change amount, which is related to the magnetic pole strength of the magnetic piece 21 and the rotating speed of the photosensitive drum 20. The magnetic flux change amount AQ is proportional to the rotating speed of the photosensitive drum 20, so the induced electromotive force E is proportional to the rotating speed of the photosensitive drum 20, that is, the induced current is proportional to the rotating speed of the photosensitive drum 20. The faster the rotating speed of the photosensitive drum 20, the greater the induced electromotive force E (induced current), the stronger the light intensity of the emitted light of the electric elimination piece 1, and the higher the brightness of the emitted light. That is, the brightness of the light emission of the electric elimination piece 1 is proportional to the rotating speed of the photosensitive drum 20. For example, the faster the rotating speed of the photosensitive drum 20, the higher the brightness of the light emission of the electric elimination piece 1, and the faster the speed of electric elimination of the residual charge on the outer surface of the photosensitive drum 20; or the rotating speed of the photosensitive drum 20 slows down (for example, the image forming device is in an intermittent printing mode or a silent printing mode), the light intensity of the electric elimination piece 1 decreases with the decrease of the rotating speed of the photosensitive drum 20, and the speed of electric elimination of the residual charge on the outer surface of the photosensitive drum 20 also decreases. Therefore, the light intensity of the electric elimination piece 1 changes with the rotating speed of the photosensitive drum 20, and the brightness of the electric elimination piece 1 is controllable. Thus, the rotating speed of the photosensitive drum 20 is matched with the electric elimination degree, which effectively prevents the electric elimination piece from over-electric elimination of the photosensitive drum 20 or insufficient electric elimination of the photosensitive drum 20, and further realizes the matching electric elimination of the electric elimination piece and the photosensitive drum.

[0092] Step 104, the electric elimination piece receives the induced current and starts.

[0093] As an optional method, when the electric elimination piece 1 is an LED, the induced current is used to drive the electric elimination piece 1 to emit light, so as to realize the start of the electric elimination piece 1.

[0094] Step 106, the electric elimination piece electrically eliminates the residual charge on the outer surface of the photosensitive drum.

[0095] As Figure 5As shown, the light emitted by the electric discharge member 1 irradiates the photosensitive surface of the photosensitive drum 20 to discharge the residual charge on the outer surface of the photosensitive drum 20. The light emitted by the electric discharge member 1 irradiates the light collector 302, the light collector 302 converges the light to the light guide strip 301, the light guide strip 301 guides the light to irradiate the outer surface of the photosensitive drum 20, and the reflector 303 can reflect the excess light emitted by the light guide strip 301 back to the light guide strip 301, so that the light guide strip 301 can also irradiate the excess light to the photosensitive drum 20. The outer surface of the photosensitive drum 20 is irradiated by light, and the residual charge on the outer surface of the photosensitive drum 20 is uniformly discharged, thereby achieving the discharge of the residual charge on the outer surface of the photosensitive drum 20.

[0096] In the technical scheme provided by the embodiment of the present application, the magnetic induction member and the magnetic member are relatively displaced to make the magnetic induction member generate an induced current, the electric discharge member receives the induced current and starts, and the electric discharge member discharges the residual charge on the outer surface of the photosensitive drum, so that the electric discharge member discharges the photosensitive drum without additional power supply, thereby reducing the occupied space of the electric discharge member, and the electric discharge member has a simple structure and is designed passively without external power supply. When the magnetic induction member and the magnetic member are relatively displaced, the magnetic induction member generates an induced current to drive the electric discharge member to discharge, so that the discharge degree of the electric discharge member changes with the speed of the relative displacement of the magnetic induction member and the magnetic member, thereby realizing the matching of the speed of the relative displacement of the magnetic induction member and the magnetic member and the discharge degree, effectively preventing the over-discharge or insufficient discharge of the electric discharge member to the photosensitive drum, and further realizing the matching discharge of the electric discharge member and the photosensitive drum.

[0097] The embodiment of the present application effectively prevents the over-discharge of the electric discharge member to the photosensitive drum, avoids the over-charge and over-discharge and other light fatigue phenomena of the photosensitive drum, thereby improving the service life of the photosensitive drum. The embodiment of the present application effectively prevents the insufficient discharge to the photosensitive drum, avoids the phenomenon of ghosting in the printed image, and thereby improves the quality of the printed image.

[0098] In the technical scheme of the embodiment of the present application, the induced current generated by the magnetic induction member is proportional to the rotational speed of the photosensitive drum, and the light intensity of the electric discharge member is proportional to the rotational speed of the photosensitive drum, so that the light intensity of the electric discharge member matches the rotational speed of the photosensitive drum, thereby matching the dark decay curve of the electric discharge member and the photosensitive drum, effectively discharging the outer surface of the photosensitive drum, and further improving the charge and discharge capacity of the photosensitive drum, preventing the over-charge and over-discharge and other fatigue phenomena, and prolonging the service life of the photosensitive drum.

[0099] In the technical scheme of the embodiment of the present application, the passive electric discharge member and the light guide strip are used to discharge the outer surface of the photosensitive drum, reduce the residual charge on the outer surface of the photosensitive drum, reduce light fatigue, thereby avoiding the ghosting phenomenon in the printing process, and improving the quality of the printed image.

[0100] Figure 10Another structural schematic diagram of the imaging assembly provided by the embodiment of the present application is shown in FIG. 3, wherein the imaging assembly in the embodiment is based on the imaging assembly shown in FIG. 2, and the carrier 3 further comprises a power recovery device 33 electrically connected with the magnetic induction piece 2 and the electric elimination piece 1 respectively. Figure 10 The power recovery device 33 is used for storing the induced current or preventing the induced current from being delivered to the electric elimination piece 1 when the photosensitive drum 20 does not need to be electrically eliminated. Figure 5 The power recovery device 33 is used for storing the induced current or preventing the induced current from being delivered to the electric elimination piece 1 when the photosensitive drum 20 does not need to be electrically eliminated.

[0101] The extension of the carrier 3 can be a selective switch 32. The selective switch 32 is connected to the first end a of the power recovery device 33 to make the power recovery device 33 electrically connected with the magnetic induction piece 2, and the selective switch 32 can be set to charge the power recovery device 33 or prevent the induced current from being delivered to the electric elimination piece 1, at this time, the photosensitive drum 20 does not need to be electrically eliminated, and the power recovery device 33 stores the induced current or prevents the induced current from being delivered to the electric elimination piece 1. When the selective switch 32 is set to charge the power recovery device 33, the power recovery device 33 can be a storage battery or other energy storage device. The selective switch 32 is connected to the second end b of the power recovery device 33 to make the power recovery device 33 electrically connected with the electric elimination piece 1, and the selective switch 32 can be set to directly power the electric elimination piece 1, at this time, the magnetic induction piece 2 can deliver the induced current to the electric elimination piece 1 through the power recovery device 33.

[0102] In the imaging process, including charging, developing and transferring, the photosensitive drum 20 needs to rotate to realize the operation of forming the developer image on the paper, but at this time, the photosensitive drum 20 does not need to use the electric elimination piece 1. When the image forming control unit controls the rotation of the driving part 22, the magnetic piece 21 rotates to generate a magnetic field, the magnetic induction piece 2 cuts the magnetic force lines in the magnetic field to generate an induced current, and the driving circuit continues to generate a power supply voltage. The embodiment provides the power recovery device 33 to recover the power supply voltage generated by the rotation of the photosensitive drum 20 when the photosensitive drum 20 does not need to use the electric elimination piece 1, so as to protect the photosensitive drum 20 and avoid the false electric elimination, overexposure or overelectric elimination of the photosensitive drum 20. Moreover, the power recovery device 33 can also provide the electric power source for the electric elimination piece 1 after collecting a certain amount of electric power, thereby saving the energy consumption and enhancing the electric power of the electric elimination piece 1. Therefore, through the embodiment of the present application, when the photosensitive drum 20 does not need to use the electric elimination piece 1, the image forming control unit controls the selective switch to connect the power recovery device 33, so as to recover the power supply voltage generated by the driving circuit; when the photosensitive drum 20 needs to use the electric elimination piece 1 to perform the electric elimination operation, the image forming control unit controls the selective switch to connect the electric elimination piece 1 to directly power, so that the electric elimination piece 1 performs the matching electric elimination operation for the photosensitive drum 20.

[0103] The embodiment of the present application provides a process cartridge, which comprises an imaging assembly, wherein the description of the imaging assembly can refer to the description of the imaging assembly in the embodiment of the present application, which will not be repeated here. Figures 1 to 10 The process cartridge is detachably installed on the image forming apparatus.

[0104] The embodiment of the present application provides an image forming apparatus, which comprises an imaging assembly, wherein the description of the imaging assembly can refer to the description of the imaging assembly in the embodiment of the present application, which will not be repeated here. Figures 1 to 10

[0105] The embodiment of the present application provides another image forming apparatus, which comprises an imaging assembly, a main body and a detection member, wherein the imaging assembly can comprise a photosensitive drum and a magnetic member, the magnetic member is displaced along with the rotation of the photosensitive drum, the magnetic member is used for generating an induced current by relative displacement with a magnetic induction member when the photosensitive drum rotates, and the induced current is used for determining whether the imaging assembly is expected.

[0106] The imaging assembly is used for being detachably installed on the main body, the detection member is arranged on the main body, the detection member is used for outputting a detection current corresponding to the induced current, the detection current is increased along with the increase of the rotation speed of the photosensitive drum, and the detection current is used for determining whether the imaging assembly is expected.

[0107] The imaging assembly further comprises an electric elimination member, which is used for receiving the induced current and eliminating electricity on the outer surface of the photosensitive drum.

[0108] The imaging assembly can refer to the description of the imaging assembly in the embodiment of the present application, which will not be repeated here. Figures 1 to 10

[0109] In the field of printing and imaging, examples of the image forming apparatus include: an inkjet printer, a laser printer, an LED printer, a copier, a scanner or a multifunctional one-body fax machine, and a multi-functional peripheral (MFP) which performs the above functions in a single device. The image forming apparatus comprises an image forming control unit and an image forming unit, wherein the image forming control unit is used for controlling the whole image forming apparatus, and the image forming unit is used for forming an image on a conveyed paper under the control of the image forming control unit based on image forming data and a developer such as carbon powder stored in a process cartridge.

[0110] In the field of printing and imaging, the process cartridge is used for accommodating a developer. For example, the process cartridge is an ink cartridge, and the developer is ink, so that the ink cartridge is used for accommodating the ink; the process cartridge is a selenium drum, and the developer is carbon powder, so that the selenium drum is used for accommodating the carbon powder; the process cartridge is a powder cartridge or a powder drum, and the developer is carbon powder, so that the powder cartridge is used for accommodating the carbon powder, and the powder drum is used for accommodating the carbon powder.

[0111] ​​In the technical solutions of the processing box and the image forming device provided by the embodiment of the present application, the magnetic member is displaced with the rotation of the photosensitive drum, the magnetic member is used to generate an induced current by relative displacement with the magnetic induction member when the photosensitive drum rotates, and the induced current is not generated when the photosensitive drum does not rotate, so that the induced current can represent whether the photosensitive drum rotates, thereby realizing determination of whether the photosensitive drum normally works, whether the imaging assembly meets the expectation, and further determination of whether the processing box meets the expectation.

[0112] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An imaging component, characterized in that, The imaging assembly comprises: a photosensitive drum, a magnetic element, and a magnetic induction element, the magnetic induction element is matched with the magnetic element, the magnetic element is located at a first end of the photosensitive drum, and the magnetic induction element is oppositely arranged with the first end of the photosensitive drum so that the magnetic induction element is oppositely arranged with the magnetic element; the magnetic element is displaced with rotation of the photosensitive drum; the magnetic element is used to relatively move with the magnetic induction element when the photosensitive drum rotates, so that the magnetic induction element generates an induced current; and the induced current is used to determine whether the imaging assembly is expected; the imaging assembly further comprises an electric elimination element, the electric elimination element is electrically connected with the magnetic induction element, and the electric elimination element is used to receive the induced current transmitted by the magnetic induction element and eliminate electricity on the outer surface of the photosensitive drum.

2. The imaging assembly of claim 1, wherein, The imaging assembly further comprises a detection element, the detection element is used to output a detection current corresponding to the induced current, the detection current increases with an increase of the rotating speed of the photosensitive drum, and the detection current is used to determine whether the imaging assembly is expected.

3. The imaging assembly of claim 2, wherein, The electric elimination element is an electric elimination lamp, the electric elimination lamp is used to receive the induced current and emit light to irradiate the outer surface of the photosensitive drum, so that the outer surface of the photosensitive drum is electrically eliminated.

4. The imaging assembly of claim 3, wherein, The detection element is a photosensitive resistor, and the detection current increases with an increase of the light intensity of the electric elimination lamp.

5. The imaging assembly of claim 3 or 4, wherein, The imaging assembly further comprises a light guide strip, the light guide strip is arranged along the axial direction of the photosensitive drum, and the light guide strip is used to receive the light emitted by the electric elimination lamp to irradiate the outer surface of the photosensitive drum.

6. The imaging assembly of claim 5, wherein, The light guide strip comprises a first light guide part and a second light guide part, the first light guide part is oppositely arranged with the photosensitive drum, and the second light guide part is oppositely arranged with the detection element.

7. The imaging assembly of claim 5, wherein, A plurality of light guide points are arranged on the side of the light guide strip close to the photosensitive drum, and the light guide points comprise protrusions and / or recesses.

8. The imaging assembly of claim 5, wherein, The imaging assembly further comprises a light collecting element, the light collecting element is located between the electric elimination element and the light guide strip, the light collecting element comprises a light inlet end and a light outlet end, the light collecting element is used to converge the light entering the light inlet end to the light outlet end and guide the light out, the light inlet end is used to receive the light emitted by the electric elimination element, and the light outlet end is used to guide the light out to the light guide strip.

9. The imaging assembly of claim 5, wherein, The side of the light guide strip away from the photosensitive drum is provided with a reflection element, and the reflection element is used to reflect the light.

10. The imaging assembly of claim 1, wherein, The imaging assembly further comprises a driving circuit, and the magnetic induction element is electrically connected with the electric elimination element through the driving circuit.

11. The imaging assembly of claim 10, wherein, The driving circuit comprises a rectifier filter circuit.

12. The imaging assembly of claim 10, wherein, The imaging assembly further comprises a carrier, and the magnetic induction element and the driving circuit are arranged on the carrier.

13. The imaging assembly of claim 12, wherein, The carrier comprises a body part and an extension part extending from the body part, the magnetic induction element is arranged on the body part, and the driving circuit is arranged on the extension part.

14. The imaging assembly of claim 13, wherein, The number of the magnetic induction elements is multiple, the multiple magnetic induction elements are arranged around a center point of the body part and sequentially arranged along the circumference of the center point of the body part.

15. The imaging assembly of claim 12, wherein, The carrier further comprises a power recovery device electrically connected with the magnetic induction member and the electric elimination member respectively, the magnetic induction member delivers the induced current to the electric elimination member through the power recovery device, and the power recovery device is used for storing the induced current or preventing the induced current from being delivered to the electric elimination member when the photosensitive drum does not need to be deenergized.

16. The imaging assembly of claim 9, wherein, The imaging assembly further comprises a housing, and the photosensitive drum is rotatably arranged on the housing, and the magnetic induction member is arranged on the housing.

17. The imaging assembly of any of claims 1-8, wherein, The imaging assembly further comprises a driving component, at least one magnetic member is arranged on the driving component, and the magnetic induction member is oppositely arranged with the magnetic member and can be relatively displaced. The driving component is rotatable synchronously with the photosensitive drum.

18. The imaging assembly of claim 17, wherein, The driving component is a gear.

19. The imaging assembly of claim 17, wherein, The magnetic member and the photosensitive drum rotate around the same axis.

20. A process cartridge, characterized by, An image forming apparatus comprising the imaging assembly according to any one of claims 1-19.

21. An image forming apparatus characterized by comprising: An image forming apparatus comprising the imaging assembly according to any one of claims 1-19.

22. The image forming apparatus according to claim 21, wherein The image forming apparatus further comprises a main body, and the imaging assembly is detachably arranged on the main body.

Images