Developing cartridges, drum cartridges, processing cartridges, and electrophotographic imaging equipment

Abstract

This invention provides a developing cartridge, a drum cartridge, a processing cartridge, and an electrophotographic imaging device. The developing cartridge includes a developing frame with a first chip holder and a first chip. The first chip holder has a first receiving position to receive the first chip. The first chip has two or more first electrical contacts and two or more first springs. The two or more first springs correspond one-to-one with the two or more first electrical contacts. The first spring is electrically connected to its corresponding first electrical contact. The first spring includes a first contact portion, and the first electrical contact is located between the first contact portion and the bottom of the first receiving position. The first spring forces its first contact portion to move toward and electrically connect to the side wall of a corresponding first electrical contact pin. This invention also provides a drum cartridge, a processing cartridge provided with the above-described developing cartridge or the above-described drum cartridge, and an electrophotographic imaging device provided with the above-described processing cartridge. The developing cartridge has the advantages of long service life and stable communication, and the drum cartridge also has the advantages of long service life and stable communication.

Description

Technical Field

[0001] This invention relates to the field of electrophotographic imaging technology, and more specifically, to a developing cartridge, a drum cartridge, a processing cartridge including the aforementioned developing cartridge or drum cartridge, and an electrophotographic imaging device provided with the aforementioned processing cartridge. Background Technology

[0002] A processing cartridge typically includes a developing cartridge and a drum cartridge, with a chip mounted on either the developing cartridge or the drum cartridge. This chip serves both to store information data from the processing cartridge and to make electrical connections with the electrical contacts on the electrophotographic imaging device, allowing information data to be read from or written to the chip. Currently, the chip has multiple electrical contacts that make contact with the electrical contacts to achieve information exchange between the chip and the electrophotographic imaging device. However, since existing electrical contacts are generally planar in structure, and this plane is parallel to the upper and lower surfaces of the chip, when the processing cartridge is assembled into the processing cartridge mounting cavity of the electrophotographic imaging device using a sliding or push-fit method, the electrical contacts on the chip will be subjected to frictional and / or compressive forces. For example, during the disassembly and assembly of a developing cartridge or drum cartridge containing a chip, the electrical contacts on the chip will not only be subjected to a large pushing force from the electrical contact pins, but will also be subjected to friction due to contact and relative sliding with the electrical contact pins. This can easily cause the electrical contacts on the chip to be scratched, or even fall off and / or damaged, thus rendering the chip unusable and the processing cartridge unable to function properly.

[0003] Furthermore, since the planes on the chip where the electrical contacts and styluses make contact are parallel to the upper and lower surfaces of the chip, and the electrophotographic imaging device will generate a certain amount of vibration during operation, the electrical contacts and styluses on the chip are prone to misalignment or disconnection under the influence of the vibration generated by the electrophotographic imaging device. This causes the electrical connection between the processing box and the electrophotographic imaging device to fail and communication to be interrupted, resulting in poor working stability and reliability of the electrophotographic imaging device. Summary of the Invention

[0004] To address the aforementioned problems, the first objective of this invention is to provide a developing cartridge with a long service life and stable communication.

[0005] The second objective of this invention is to provide a drum box with a long service life and stable communication.

[0006] A third objective of the present invention is to provide a processing cartridge provided with the aforementioned developing cartridge or the aforementioned drum cartridge.

[0007] A fourth objective of the present invention is to provide an electrophotographic imaging device equipped with the aforementioned processing box.

[0008] To achieve the first objective of this invention, the present invention provides a developing cartridge, including a developing frame and a first chip. The developing frame has a first chip holder, the first chip holder has a first receiving position, the first chip is installed in the first receiving position, and the first chip has two or more first electrical contacts. The first electrical contacts are disposed facing outwards from the opening of the first receiving position. The first chip further includes two or more first springs, each of which corresponds to one of the two or more first electrical contacts. Each first spring is electrically connected to one of its corresponding first electrical contacts. The two or more first springs are used to correspond one-to-one with two or more first electrical pins in an electrophotographic imaging device. Each first spring includes a first contact portion, and the first electrical contact is located between the first contact portion and the bottom of the first receiving position. The first spring forces its first contact portion to move toward the side wall of the corresponding first electrical pin and make an electrical connection.

[0009] As can be seen from the above, the design of the first spring ensures that when the developing cartridge and drum cartridge are installed in the processing cartridge cavity of the electrophotographic imaging device, the first spring can contact the electrical contact pins in the processing cartridge cavity through the first contact portion. Furthermore, the first contact portion, under the action of the elastic potential energy of the first spring itself, tightly abuts against the circumferential surface of the electrical contact pins, preventing the first spring and electrical contact pins from disengaging due to vibrations generated during the operation of the electrophotographic imaging device. This ensures the stability and reliability of communication between the first chip and the electrophotographic imaging device, preventing communication interruptions and ensuring the normal and stable operation of the electrophotographic imaging device. In addition, by setting the first spring, the first electrical contact on the first chip can also avoid being subjected to frictional and / or compressive forces applied by the electrical contact pins, preventing scratches, detachment, and / or damage to the first electrical contact, thus extending the service life of the first chip and the developing cartridge.

[0010] A further embodiment is that the first contact portion has a first guide section and a first contact section. Along the first mounting direction of the developing cartridge, the first guide section is located upstream of the first contact section. The first guide section extends from the first contact section at an inclination away from the first mounting direction and away from the first electrical contact pin.

[0011] As can be seen from the above, by setting the first guide section, when the developing cartridge is installed into the processing cartridge mounting cavity of the electrophotographic imaging device along the first installation direction, the first guide section can guide a corresponding electrical contact pin in the processing cartridge mounting cavity to slide toward the first electrical contact point, and under the elastic action of the first spring, it tightly abuts against the first contact section of the first contact part of the first spring, thereby ensuring the convenience of developing cartridge installation and avoiding damage or deformation of the first spring during installation.

[0012] A further improvement is that a first arc-shaped area is formed on the first contact segment, and the first arc-shaped area is recessed from the side of the first contact segment facing the first electrical contact pin away from the first electrical contact pin.

[0013] As can be seen from the above, setting a first arc-shaped area on the first contact section can increase the contact area between the first contact section and the electrical contact pin, thereby making the electrical connection between the electrical contact pin and the first spring more stable, and further reducing the impact of vibration generated during the operation of the first spring and the electrical contact pin by the electrophotographic imaging equipment, thus ensuring the reliability of the developing cartridge.

[0014] A further embodiment is that the first spring also includes a first connecting portion, which extends from the first electrical contact toward the first electrical pin at an angle to the thickness direction of the first chip, and the first contact portion is disposed on the protruding side of the first connecting portion; the first connecting portion is integrally formed with the first contact portion and the first electrical contact, or the first connecting portion is welded and fixed to the first contact portion and the first electrical contact respectively.

[0015] As can be seen from the above, the arrangement of the first connecting part enables the first contact part to better and more tightly abut against the electrical contact pin; and through the connection design between the first connecting part, the first contact part and the first electrical contact, the electrical contact pin can communicate with the first chip more stably and reliably.

[0016] To achieve the second objective of this invention, a drum housing is provided, comprising a drum frame and a second chip. The drum frame has a second chip holder, the second chip holder has a second receiving position, the second chip is installed in the second receiving position, and the second chip has two or more second electrical contacts. The second electrical contacts are disposed facing outwards from the opening of the second receiving position. The second chip further comprises two or more second springs, each corresponding to one or more second electrical contacts. Each second spring is electrically connected to a corresponding second electrical contact. The two or more second springs are used to correspond one-to-one with two or more second electrical pins in an electrophotographic imaging device. Each second spring includes a second contact portion, and the second electrical contact is located between the second contact portion and the bottom of the second receiving position. The second spring forces its second contact portion to move toward the side wall of the corresponding second electrical pin and make an electrical connection.

[0017] As can be seen from the above, the design of the second spring ensures that when the drum cartridge and developing cartridge are installed in the processing cartridge cavity of the electrophotographic imaging device, the second spring can contact the electrical contact pins in the processing cartridge cavity through the second contact portion. Furthermore, the second contact portion, under the action of the elastic potential energy of the second spring itself, tightly abuts against the circumferential surface of the electrical contact pins, preventing the second spring and electrical contact pins from disengaging due to vibrations generated during the operation of the electrophotographic imaging device. This ensures the stability and reliability of communication between the second chip and the electrophotographic imaging device, preventing communication interruptions and ensuring the normal and stable operation of the electrophotographic imaging device. In addition, by setting the second spring, the second electrical contacts on the second chip can also avoid being subjected to frictional and / or compressive forces applied by the electrical contact pins, preventing scratches, detachment, and / or damage to the second electrical contacts, thus extending the service life of the second chip and the developing cartridge.

[0018] A further embodiment is that the second contact portion has a second guide section and a second contact section. Along the second mounting direction of the drum, the second guide section is located at the upstream end of the second contact section. The second guide section extends from the second contact section at an angle away from the second mounting direction and away from the second electrical contact pin.

[0019] As can be seen from the above, by setting the second guide section, when the drum box is installed into the processing box mounting cavity of the electro-photographic imaging device along the second installation direction, the second guide section can guide the corresponding electrical contact pin in the processing box mounting cavity to slide towards the second electrical contact point, and under the elastic action of the second spring, it tightly abuts against the second contact section of the second contact part of the second spring, thereby ensuring the convenience of drum box installation and avoiding damage or deformation of the second spring during installation.

[0020] A further proposed solution is to form a second arc-shaped area on the second contact segment, with the second arc-shaped area recessed from the side of the second contact segment facing the second electrical contact pin away from the second electrical contact pin.

[0021] As can be seen from the above, setting a second arc-shaped area on the second contact section can increase the contact area between the second contact section and the electrical contact needle, thereby making the electrical connection between the electrical contact needle and the second spring more stable, and further reducing the impact of vibration generated during the operation of the second spring and the electrical contact needle by the electrophotographic imaging equipment, thus ensuring the reliability of the drum box operation.

[0022] A further embodiment is that the second spring also includes a second connecting portion, which extends from the second electrical contact toward the second electrical pin at an angle to the thickness direction of the second chip, and the second contact portion is disposed on the protruding side of the second connecting portion; the second connecting portion is integrally formed with the second contact portion and the second electrical contact, or the second connecting portion is welded and fixed to the second contact portion and the second electrical contact respectively.

[0023] As can be seen from the above, the second connection part allows the second contact part to better and more tightly abut against the electrical contact pin; and the connection design between the second connection part, the second contact part and the second electrical contact allows the electrical contact pin to communicate with the second chip more stably and reliably.

[0024] To achieve the third objective of the present invention, the present invention provides a processing box, including a developing box and a drum box, wherein the developing box is the developing box described above; or the drum box is the drum box described above.

[0025] As can be seen from the above, the processing box equipped with the aforementioned developing box or drum box can prevent the chip's electrical contacts from being scratched by the electrical contact pins, or even from falling off and / or being damaged, thus extending the service life of the processing box. At the same time, it can also reduce the impact of vibrations generated during the operation of the electrophotographic imaging equipment on the processing box, thereby improving the stability and reliability of communication between the chip and the electrophotographic imaging equipment, preventing communication interruptions, and ensuring that the electrophotographic imaging equipment can work normally and stably.

[0026] To achieve the fourth objective of the present invention, the present invention provides an electrophotographic imaging device, including a housing, wherein a processing box mounting cavity is provided inside the housing, and the aforementioned processing box is installed inside the processing box mounting cavity.

[0027] As can be seen from the above, the electrophotographic imaging device equipped with the aforementioned processing box can prevent the electrical contacts of the chip on the processing box from being scratched by the electrical contact pins, or even from falling off and / or being damaged, thus extending the service life of the processing box. At the same time, it can also reduce the impact of vibrations generated during the operation of the electrophotographic imaging device on the processing box, thereby improving the stability and reliability of communication between the chip and the electrophotographic imaging device, preventing communication interruptions, and ensuring that the electrophotographic imaging device can work normally and stably. Attached Figure Description

[0028] Figure 1 This is a structural diagram of the first embodiment of the developing cartridge of the present invention.

[0029] Figure 2 This is a structural diagram of the first omitted component of the developing cartridge of the present invention.

[0030] Figure 3 This is a cross-sectional view of the first embodiment of the developing cartridge of the present invention.

[0031] Figure 4 This is a structural diagram of the second omitted component of the first embodiment of the developing cartridge of the present invention.

[0032] Figure 5 This is a structural diagram of the chip in the first embodiment of the developing cartridge of the present invention.

[0033] Figure 6This is a structural diagram of the chip in the second embodiment of the developing cartridge of the present invention.

[0034] Figure 7 This is a schematic diagram of the structure of an embodiment of the drum box of the present invention.

[0035] Figure 8 This is a structural diagram of the chip in an embodiment of the drum housing of the present invention.

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0037] First embodiment of the developing cartridge

[0038] Combination Figures 1 to 3 The developing cartridge 100 includes a developing frame 1, a developing roller 21, a powder feeding roller 22, a stirring frame 23, a powder discharging blade 24, a driving force receiving head 25, a transmission wheel set 26, and a first chip 3.

[0039] Combination Figure 4 The developing frame 1 has a first chip 3 holder 121, which has a first receiving position 1211 for accommodating the first chip 3. In this embodiment, the developing frame 1 includes a first body 11, a first end cap 12, and a second end cap 13. The first body 11 has a toner hopper 111 for storing toner. The first end wall and the second end wall are distributed along the axial direction of the developing roller 21 at both ends of the toner hopper 111. The first end cap 12 is detachably mounted on the first end wall, and the first chip 3 holder 121 is integrally formed on the first end cap 12. Alternatively, the first chip 3 holder 121 can also be detachably connected to the first end cap 12. The second end cap 13 is detachably mounted on the second end wall. As another option, the first chip socket 121 can also be integrally formed on the second end cover 13, or the first chip socket 121 and the second end cover 13 can be detachably connected; as another option, the first chip socket 121 can also be integrally formed on the first body 11, or the first chip socket 121 and the first body 11 can be detachably connected.

[0040] The developing roller 21 is rotatably mounted on the first body 11 about its own axis of rotation. The first end of the developing roller 21 is mounted on the first end wall, and the second end of the developing roller 21 is mounted on the second end wall. The developing roller 21 is located outside the toner hopper 111 and at the toner outlet of the toner hopper 111. The developing roller 21 is used to uniformly transfer the toner in the toner hopper 111 to the photosensitive drum of the drum unit for development.

[0041] The powder delivery roller 22 is rotatably mounted on the first body 11 about its own axis. The powder delivery roller 22 is located inside the powder hopper 111 and at the powder outlet. The powder delivery roller 22 is adjacent to the developing roller 21 to transfer the toner in the powder hopper 111 to the developing roller 21.

[0042] The stirring frame 23 is rotatably mounted on the first body 11 about its own axis of rotation, and the stirring frame 23 is located inside the toner hopper 111. The stirring frame 23 is used to stir the toner in the toner hopper 111 to prevent the toner from clumping, and the stirring frame 23 can also transfer the toner in the toner hopper 111 to the developing roller 21 and the toner feeding roller 22.

[0043] The toner ejector blade 24 is mounted on the first body 11. The toner ejector blade 24 is located at the toner outlet of the toner hopper 111, and the cutting edge of the toner ejector blade 24 is adjacent to the outer periphery of the developing roller 21 and extends into the toner hopper 111. The toner ejector blade 24 is used to control the thickness of the toner layer on the developing roller 21 so that the thickness of the toner layer on the developing roller 21 is consistent, thereby ensuring imaging quality.

[0044] The driving force receiving head 25 is rotatably mounted on the first end wall about its own axis of rotation. The driving force receiving head 25 has a receiving part 251 and a gear part 252. The receiving part 251 is used to dock with the driving part of the driving head in the electrophotographic imaging device, so that the driving head can drive the driving force receiving head 25 to rotate through the driving part and the receiving part 251.

[0045] The drive wheel assembly 26 is mounted on the first end wall and is located between the first end wall and the first end cover 12, so that the first end cover 12 covers the drive wheel assembly 26, thereby preventing external dust from entering the drive wheel assembly 26 and causing a decrease in the transmission efficiency of the drive wheel assembly 26 and / or the drive wheel assembly 26 to fail to rotate normally. The drive wheel assembly 26 is connected to the developing roller 21, the powder feeding roller 22 and the stirring frame 23 respectively, so that the drive wheel assembly 26 can drive the developing roller 21, the powder feeding roller 22 and the stirring frame 23 to rotate at different speeds. For example, in this embodiment, the drive wheel assembly 26 includes a developing roller gear, a powder feeding roller gear, a stirring frame gear and an idler gear. The developing roller gear is mounted on the first end of the developing roller 21 and meshes with the gear portion 252 on the driving force receiving head 25. The powder feeding roller gear is mounted on the first end of the powder feeding roller 22 and meshes with the gear portion 252. The stirring frame gear is mounted on the first end of the stirring frame 23. The idler gear meshes with the gear portion 252 and the stirring frame gear respectively.

[0046] Combination Figure 5The first chip 3 has two or more first electrical contacts 31 and two or more first spring sheets 32, the number of first electrical contacts 31 being the same as the number of first spring sheets 32. Each of the two or more first spring sheets 32 corresponds one-to-one with a first electrical contact 31, and each first spring sheet 32 ​​is electrically connected to a corresponding first electrical contact 31. Furthermore, each of the two or more first spring sheets 32 also corresponds one-to-one with two or more first electrical pins in an electrophotographic imaging device. In this embodiment, the two or more first electrical contacts 31 are distributed along the axial direction of the developing roller 21, and the two or more first spring sheets 32 are also distributed along the axial direction of the developing roller 21. The first electrical contacts 31 are located on the side of the first chip 3 facing away from the bottom of the first receiving position 1211, such that the first electrical contacts 31 face outwards from the opening of the first receiving position 1211, and the first electrical contacts 31 are located between the bottom of the first receiving position 1211 and the first spring sheets 32.

[0047] The first spring 32 includes a first contact portion 321 and a first connecting portion 322. The first spring 32 forces its first contact portion 321 to move toward the side wall of a corresponding first electrical contact pin and make an electrical connection. The first contact portion 321 has a first guide section 3211 and a first contact section 3212. Along the first mounting direction of the developing cartridge 100, the first guide section 3211 is located at the upstream end of the first contact section 3212, so that when the developing cartridge 100 is installed into the processing cartridge mounting cavity of the electrophotographic imaging device, the first electrical contact pin 101 in the processing cartridge mounting cavity slides through the first guide section 3211 to the first middle region of the first electrical contact 31, so that the side wall of the first electrical contact pin 101 contacts the first contact section 3212, thereby realizing the electrical connection between the first electrical contact pin 101 and the first electrical contact 31. The first contact segment 3212 is preferably perpendicular to or slightly inclined to the thickness direction of the first chip 3. The first guide segment 3211 extends from the first contact segment 3212 at an inclination away from and away from the first electrical contact pin 101 in the first mounting direction. That is, in the thickness direction of the first chip 3, the projection of the first contact segment 3212 is inclined to the axial direction of the developing roller 21 and to the first mounting direction, which is perpendicular to the axial direction of the developing roller 21. By setting the first guide section 3211, when the developing cartridge 100 is installed into the processing cartridge mounting cavity of the electrophotographic imaging device along the first installation direction, the first guide section 3211 can guide the corresponding first electrical contact pin 101 in the processing cartridge mounting cavity to slide towards the first middle area of ​​the first electrical contact 31. Under the elastic action of the first spring 32, the side wall of the first electrical contact pin 101 is tightly abutted against the first contact section 3212 of the first contact portion 321 of the first spring 32. This ensures the convenience of installing the developing cartridge 100 and avoids damage or deformation of the first spring 32 during the installation process.

[0048] The first connecting portion 322 extends from the first electrical contact 31 toward the first electrical pin 101 at an angle to the thickness direction of the chip, and the first contact portion 321 is located on the protruding side of the first connecting portion 322. This design allows the first spring 32 to use its elasticity to force its first contact portion 321 to move toward the sidewall of the corresponding first electrical pin 101 and make electrical connection, thereby making the first contact segment 3212 of the first contact portion 321 contact the corresponding first electrical pin 101 to achieve electrical connection between the first electrical contact 31 and the first electrical pin 101. The first connecting portion 322 allows the first contact portion 321 to better and more tightly abut against the first electrical pin 101. In addition, the first connecting portion 322 can be integrally formed with the first contact portion 321 and the first electrical contact 31, or the first connecting portion 322 can be welded and fixed to the first contact portion 321 and the first electrical contact 31 respectively, so that the first electrical pin 101 can communicate with the first chip 3 more stably and reliably.

[0049] In summary, the design of the first spring ensures that when the developing cartridge and drum cartridge are installed in the processing cartridge cavity of the electrophotographic imaging device, the first spring can contact the first electrical contact 101 in the processing cartridge cavity through the first contact portion. The first contact portion, under the action of the elastic potential energy of the first spring, tightly abuts against the circumferential surface of the first electrical contact 101, preventing the first spring and the first electrical contact 101 from disengaging due to vibrations generated during the operation of the electrophotographic imaging device. This ensures the stability and reliability of communication between the first chip and the electrophotographic imaging device, preventing communication interruptions and ensuring the normal and stable operation of the electrophotographic imaging device. Furthermore, by setting the first spring, the first electrical contact on the first chip can also avoid being subjected to frictional and / or compressive forces applied by the first electrical contact 101, preventing scratches, detachment, and / or damage to the first electrical contact, thus extending the service life of the first chip and the developing cartridge.

[0050] Second embodiment of the developing cartridge

[0051] Reference Figure 6 The difference between this embodiment and the first embodiment of the developing cartridge is that, in this embodiment, a first arc-shaped area 411 is formed on the first contact segment 411 of the first contact portion 41 of the first spring 4. The first arc-shaped area 4111 is recessed from the side of the first contact segment 411 facing the first electrical contact 40 away from the first electrical contact pin. Providing the first arc-shaped area 4111 on the first contact segment 411 increases the contact area between the first contact segment 411 and the electrical contact pin, thereby making the electrical connection between the first electrical contact pin and the first spring 4 more stable, and further reducing the impact of vibrations generated during the operation of the electrophotographic imaging equipment on the first spring 4 and the first electrical contact pin, ensuring the reliability of the developing cartridge operation.

[0052] Drum Box Example

[0053] Reference Figure 7 The drum housing 500 includes a drum frame 5, a photosensitive drum 6, a charging roller, and a second chip 7. The drum frame 5 is provided with a second chip 7 holder 51, which has a second receiving position for accommodating the second chip 7. Preferably, when the drum frame 5 includes a second body, a third end cap, and a fourth end cap (the third and fourth end caps are mounted on both sides of the first body along the axial direction of the photosensitive drum 6), the second chip 7 holder 51 can be disposed on any one of the second body, the third end cap, or the fourth end cap as required, and the second chip 7 holder 51 can be integrally formed or detachably connected to its connected object (the second body, the third end cap, or the fourth end cap).

[0054] The second body has a waste toner bin. A photosensitive drum 6 is rotatably mounted on the second body about its own axis of rotation. The photosensitive drum 6 is located outside the waste toner bin and at its entrance. The waste toner bin is used to collect the waste toner remaining on the photosensitive drum 6 after imaging. The photosensitive drum 6 is used for image formation. A charging roller is mounted on the second body and adjacent to the photosensitive drum 6. The charging roller charges the photosensitive drum 6, allowing the toner on the developing roller of the developing cartridge to be transferred to the photosensitive drum 6 for imaging.

[0055] Combination Figure 8 The second chip 7 has two or more second electrical contacts 71 and two or more second springs 72, the number of second electrical contacts 71 being the same as the number of second springs 72. Each of the two or more second springs 72 corresponds one-to-one with a second electrical contact 71, and each second spring 72 is electrically connected to a corresponding second electrical contact 71. Furthermore, each of the two or more second springs 72 also corresponds one-to-one with two second electrical pins in an electrophotographic imaging device. In this embodiment, the two or more second electrical contacts 71 are distributed along the axial direction of the photosensitive drum 6, and the two or more second springs 72 are also distributed along the axial direction of the photosensitive drum 6. The second electrical contacts 71 are located on the side of the second chip 7 facing away from the bottom of the second receiving position, such that the second electrical contacts 71 face outwards from the opening of the second receiving position, and the second electrical contacts 71 are located between the bottom of the second receiving position and the second springs 72.

[0056] The second spring 72 includes a second contact portion 721 and a second connecting portion 722. The second spring 72 forces its first contact portion 721 to move toward the side wall of the corresponding second electrical contact pin and make an electrical connection. The second contact portion 721 has a second guide section 7211 and a second contact section 7212. Along the second mounting direction of the drum housing 500, the second guide section 7211 is located at the upstream end of the second contact section 7212, so that when the drum housing 500 is installed into the processing box mounting cavity of the electrophotographic imaging device, the second electrical contact pin in the processing box mounting cavity slides through the second guide section 7211 to the second middle region of the second electrical contact 71, so that the side wall of the second electrical contact pin contacts the second contact section 7212, thereby realizing the electrical connection between the second electrical contact pin and the second electrical contact 71. The second contact segment 7212 is preferably perpendicular to or slightly inclined to the thickness direction of the second chip 7. The second guide segment 7211 extends from the second contact segment 7212, inclined away from and away from the second electrical contact pin in the second mounting direction. That is, in the thickness direction of the second chip 7, the projection of the second contact segment 7212 is inclined to the axial direction of the photosensitive drum 6 and inclined to the second mounting direction, which is perpendicular to the axial direction of the photosensitive drum 6. By setting the second guide segment 7211, when the drum box 500 is installed into the processing box mounting cavity of the electrophotographic imaging device along the second mounting direction, the second guide segment 7211 can guide the corresponding second electrical contact pin in the processing box mounting cavity to slide towards the second middle area of ​​the second electrical contact 71. Under the elastic action of the second spring 72, the side wall of the second electrical contact pin is tightly abutted against the second contact segment 7212 of the second contact portion 721 of the second spring 72. This ensures the ease of installation of the drum box 500 and avoids damage or deformation of the second spring 72 during installation.

[0057] The second connecting portion 722 extends from the second electrical contact 71 toward the second electrical pin in an inclined direction along the thickness of the chip, and the second contact portion 721 is located on the protruding side of the second connecting portion 722. This design allows the second spring 72 to use its elasticity to force its second contact portion 721 to move toward the sidewall of the corresponding second electrical pin and make electrical connection, thereby making the second contact segment 7212 of the second contact portion 721 contact the corresponding second electrical pin to achieve electrical connection between the second electrical contact 71 and the second electrical pin. The provision of the second connecting portion 722 allows the second contact portion 721 to better and more tightly abut against the second electrical pin. In addition, the second connecting portion 722 can be integrally formed with the second contact portion 721 and the second electrical contact 71, or the second connecting portion 722 can be welded and fixed to the second contact portion 721 and the second electrical contact 71 respectively, so that the second electrical pin can communicate with the second chip 7 more stably and reliably.

[0058] Preferably, a second arc-shaped area is formed on the second contact segment 7212 of the second contact portion 721 of the second spring 72. The second arc-shaped area is recessed from the side of the second contact segment 7212 facing the second central region of the second electrical contact 71 away from the second central region. Providing a second arc-shaped area on the second contact segment 7212 increases the contact area between the second contact segment 7212 and the electrical contact pin, thereby making the electrical connection between the electrical contact pin and the second spring 72 more stable, and further reducing the impact of vibrations generated during the operation of the electrophotographic imaging equipment on the second spring 72 and the electrical contact pin, ensuring the reliability of the developing cartridge operation.

[0059] In summary, the design of the second spring ensures that when the drum cartridge and developing cartridge are installed in the processing cartridge cavity of the electrophotographic imaging device, the second spring can contact the second electrical contact pin inside the processing cartridge cavity via the second contact portion. Furthermore, the second contact portion, under the action of the elastic potential energy of the second spring, tightly abuts against the circumferential surface of the second electrical contact pin, preventing the second spring and the second electrical contact pin from disengaging due to vibrations generated during the operation of the electrophotographic imaging device. This ensures the stability and reliability of communication between the second chip and the electrophotographic imaging device, preventing communication interruptions and guaranteeing the normal and stable operation of the electrophotographic imaging device. In addition, by incorporating the second spring, the second electrical contacts on the second chip are also protected from frictional and / or compressive forces applied by the second electrical contact pin, preventing scratches, detachment, and / or damage to the second electrical contacts, thus extending the service life of the second chip and the developing cartridge.

[0060] Processing box embodiment

[0061] The processing box includes a developing box and a drum box, with the developing box detachably mounted on the drum box. The developing box is the developing box described in the first or second embodiment above; or the drum box is the drum box described in the drum box embodiment above. The processing box equipped with the aforementioned developing box or drum box can prevent the chip's electrical contacts from being scratched by the electrical contact pins, or even from falling off and / or being damaged, thus extending the service life of the processing box. Simultaneously, it can reduce the impact of vibrations generated during the operation of the electrophotographic imaging equipment on the processing box, ensuring the stability and reliability of communication between the chip and the electrophotographic imaging equipment, preventing communication interruptions, and guaranteeing the normal and stable operation of the electrophotographic imaging equipment.

[0062] Example of an electrophotographic imaging device

[0063] The electrophotographic imaging device includes a housing, within which a processing box mounting cavity is provided. The processing box, as described in the above-mentioned processing box embodiment, is installed within the processing box mounting cavity. The electrophotographic imaging device equipped with the aforementioned processing box can prevent the electrical contacts of the chip on the processing box from being scratched by electrical contact pins, or even from falling off and / or being damaged, thus extending the service life of the processing box. Simultaneously, it can reduce the impact of vibrations generated during the operation of the electrophotographic imaging device on the processing box, thereby improving the stability and reliability of communication between the chip and the electrophotographic imaging device, preventing communication interruptions, and ensuring the normal and stable operation of the electrophotographic imaging device.

[0064] Finally, it should be emphasized that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. Developing box, including: A developing frame having a first chip holder having a first receiving position; A first chip is installed in the first receiving position. The first chip has two or more first electrical contacts, which are disposed facing the opening of the first receiving position. Its features are: The first chip also includes two or more first spring contacts, each of which corresponds to one or more first electrical contacts. Each first spring contact is electrically connected to one of the corresponding first electrical contacts. The two or more first spring contacts are used to correspond one or more first electrical contact pins in an electrophotographic imaging device. The first spring includes a first contact portion, and the first electrical contact is located between the first contact portion and the bottom of the first receiving position. The first spring forces its first contact portion to move toward and electrically connect to the side wall of the corresponding first electrical contact pin. The first contact portion has a first guide segment and a first contact segment. Along the first mounting direction of the developing cartridge, the first guide segment is located at the upstream end of the first contact segment. The first guide segment extends from the first contact segment at an angle away from the first mounting direction and away from the first electrical contact pin.

2. The developing cartridge according to claim 1, characterized in that: The first contact segment has a first arc-shaped area formed thereon, and the first arc-shaped area is recessed from the side of the first contact segment facing the first electrical contact pin away from the first electrical contact pin.

3. The developing cartridge according to claim 1 or 2, characterized in that: The first spring contact also includes a first connecting portion, which extends from the first electrical contact toward the first electrical pin at an angle to the thickness direction of the first chip, and the first contact portion is disposed on the protruding side of the first connecting portion; The first connecting part is integrally formed with the first contact part and the first electrical contact, or The first connecting portion is welded and fixed to the first contact portion and the first electrical contact, respectively.

4. Drum box, including: A drum frame having a second chip holder having a second receiving position; The second chip is installed in the second receiving position and has two or more second electrical contacts, which are disposed facing the opening of the second receiving position. Its features are: The second chip also includes two or more second springs, each of which corresponds to one or more second electrical contacts. Each second spring is electrically connected to one of the corresponding second electrical contacts. The two or more second springs are used to correspond one or more to two or more second electrical pins in an electrophotographic imaging device. The second spring includes a second contact portion, and the second electrical contact is located between the second contact portion and the bottom of the second receiving position. The second spring forces its second contact portion to move toward and electrically connect to the side wall of a corresponding second electrical contact pin. The second contact portion has a second guide section and a second contact section. Along the second mounting direction of the drum, the second guide section is located at the upstream end of the second contact section. The second guide section extends from the second contact section at an angle away from the second mounting direction and toward the second electrical contact pin.

5. The drum box according to claim 4, characterized in that: The second contact segment has a second arc-shaped area formed thereon, and the second arc-shaped area is recessed from the side of the second contact segment facing the second electrical contact pin away from the second electrical contact pin.

6. The drum box according to claim 4 or 5, characterized in that: The second spring also includes a second connecting portion, which extends from the second electrical contact toward the second electrical pin at an angle to the thickness direction of the second chip, and the second contact portion is disposed on the protruding side of the second connecting portion; The second connecting part is integrally formed with the second contact part and the second electrical contact, or The second connecting part is welded and fixed to the second contact part and the second electrical contact, respectively.

7. A processing cartridge, comprising a developing cartridge and a drum cartridge, wherein the developing cartridge is mounted on the drum cartridge, characterized in that: The developing cartridge is the developing cartridge described in any one of claims 1 to 3; or The drum box is the drum box described in any one of claims 4 to 6.

8. An electrophotographic imaging device, comprising a housing, wherein a processing box mounting cavity is provided within the housing, characterized in that, The processing box as described in claim 7 is installed inside the processing box mounting cavity.

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