Developing cartridge

Abstract

The application provides a developing box including a box body, a developing roller, a conductive assembly, a developing box chip and a voltage reduction assembly; the developing box chip, the voltage reduction assembly and the conductive assembly are arranged on the box body; the box body is internally provided with a containing cavity, and the containing cavity has a powder outlet; the developing roller includes a developing roller shaft extending along a length direction, and the developing roller is rotatably supported at the powder outlet; the conductive assembly is electrically connected with an input end of the voltage reduction assembly, an output end of the voltage reduction assembly is electrically connected with the developing roller shaft; the output end of the voltage reduction assembly is electrically connected with a grounding contact of the developing box chip, and the developing box further includes an end cover arranged on one end wall of the box body, an installation cavity is formed between the end cover and the end wall, the installation cavity is located at a driving end of the box body, and the voltage reduction assembly is located in the installation cavity. The application is convenient for production and transportation, convenient for disassembly and assembly, stable in electrical connection and not prone to damage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic imaging, in particular to a developing cartridge. BACKGROUND

[0002] At present, electronic imaging equipment is widely used, including printer and copier equipment. In order to use the printer and copier equipment, a drum frame with a developing cartridge needs to be installed. The change of the developing roller voltage during the use of the developing cartridge will directly affect the printing effect. In the actual production process, the difference of the same parts such as the imported electrode and the conductive part in different production batches, the difference of the production process or the temperature difference in the use process of the processing cartridge will directly or indirectly cause the change of the developing roller voltage. If the conductive part with a new resistance value corresponding to the voltage is replaced, the processing cartridge needs to be disassembled and replaced, which greatly increases the production cost. When the same batch of developing cartridges produced are sold to areas with large temperature differences, the developing roller voltage is affected by the temperature difference, and printing quality problems are prone to occur.

[0003] The existing processing cartridge includes a developing cartridge and a drum unit. The conductive part with a certain resistance value is arranged. The voltage is output to the developing roller after being processed by the conductive part, so as to realize the adaptation of the voltage applied to the developing roller, thereby ensuring the printing quality. The ground contact of the developing cartridge through the conductive part is electrically connected with the ground connection part of the printing equipment through the steel shaft of the drum frame. However, in many printing equipment, only a small number of printing equipment has the structure of the metal connection part for grounding. This leads to the fact that the toner cartridge cannot be used on the printing equipment without the metal connection part for grounding. Moreover, the toner cartridge is electrically connected with the steel shaft of the drum frame through the conductive part. The conductive part is exposed on the developing cartridge and is detachably connected with the steel shaft of the drum frame. During the transportation and installation process, the conductive part is prone to be damaged due to collision. Since the developing cartridge and the drum unit are detachably connected, in order to ensure the stability of the electrical connection, the matching precision between the ground contact and the steel shaft of the photosensitive drum is required to be high. The production and processing are difficult, and the assembly process is complex. During the installation, it is necessary to confirm whether the ground contact and the steel shaft are installed in place. The disassembly and assembly are troublesome, and the user experience is poor. SUMMARY

[0004] In order to solve the problems existing in the prior art, the purpose of the present application is to provide a developing cartridge which is convenient for production and transportation, easy to disassemble and assemble, stable in electrical connection, and can also realize the adjustment of the developing roller voltage.

[0005] In order to achieve the above object, the developing cartridge provided by the application comprises a cartridge body, a developing roller, a conductive assembly, a developing cartridge chip and a voltage reduction assembly; the developing cartridge chip, the voltage reduction assembly and the conductive assembly are arranged on the cartridge body; the cartridge body is provided with a containing cavity, and the containing cavity is provided with a powder outlet; the developing roller comprises a developing roller shaft extending along the length direction, and the developing roller is rotatably supported at the powder outlet; the conductive assembly is electrically connected with the input end of the voltage reduction assembly, the output end of the voltage reduction assembly is electrically connected with the developing roller shaft, and the output end of the voltage reduction assembly is electrically connected with the grounding contact of the developing cartridge chip.

[0006] As can be seen, the output end of the voltage reduction assembly is directly electrically connected with the grounding contact of the developing cartridge chip, which is convenient for installation and disassembly, does not need to be clamped with the grounding end on the drum unit in the installation process, has better electrical connection stability, and is convenient for production and transportation.

[0007] Further, the developing cartridge further comprises an end cover arranged at the driving end of the cartridge body, an installation cavity is surrounded between the end cover and the end wall of the driving end of the cartridge body, and the voltage reduction assembly is arranged in the installation cavity.

[0008] As can be seen, the installation cavity is arranged at the driving end of the cartridge body, and the voltage reduction assembly is arranged in the installation cavity, so that the space can be effectively saved, the installation is facilitated, and interference between the cartridge body and the printing equipment arranged at the conductive end is prevented.

[0009] Further, the voltage reduction assembly comprises a first voltage reduction component and a second voltage reduction component, the input end of the first voltage reduction component is electrically connected with the conductive assembly, the output end of the first voltage reduction component is electrically connected with the developing roller shaft, the input end of the second voltage reduction component is electrically connected with the output end of the first voltage reduction component, and the output end of the second voltage reduction component is electrically connected with the grounding contact.

[0010] As can be seen, the second voltage reduction component is electrically connected with the output end of the first voltage reduction component, that is, the second voltage reduction component is connected in parallel with the developing roller, and when the power supply voltage fluctuates, due to the parallel structure, the voltage at both ends of the developing roller is reduced and the fluctuation amplitude is reduced, so that the voltage at both ends of the developing roller is more stable.

[0011] Further, the first voltage reduction component and the second voltage reduction component are arranged on the same side of the cartridge body.

[0012] As can be seen, the first voltage reduction component, the second voltage reduction component and the developing cartridge chip are arranged on the same side, so that the connection distance is effectively shortened, the material is effectively saved, the production and installation are facilitated, and the stability of the electrical connection is improved.

[0013] Further, the resistance of at least one of the first voltage reduction component and the second voltage reduction component is adjustable; at least one adjusting hole and a chip cavity are arranged on the end cover, the voltage reduction component with adjustable resistance is exposed to the developing cartridge through the corresponding adjusting hole, and the developing cartridge chip is arranged in the chip cavity.

[0014] From the above, the adjusting hole can adjust the resistance value of the voltage reducing component without disassembling the cartridge, so as to adjust the voltage output to the developing roller, prevent the print quality problem caused by the change of the voltage output to the developing roller due to temperature influence or material difference, greatly improve the universality, and the structure is simple and convenient to adjust.

[0015] Further, the outer wall of the end cover is provided with a chip recognition position, and the chip cavity is located on the recognition position or is arranged separately from the recognition position.

[0016] Further, the developing cartridge further comprises a first electric connecting component, a second electric connecting component and a third electric connecting component arranged in the mounting cavity, the input end of the first voltage reducing component is electrically connected with the conductive assembly through the first electric connecting component, the input end of the developing roller and the input end of the second voltage reducing component are electrically connected with the output end of the first voltage reducing component through the second electric connecting component, and the output end of the second voltage reducing component is electrically connected with the grounding contact point through the third electric connecting component.

[0017] Further, the third electric connecting component comprises an electric connecting sleeve rod and two or more electric connecting bands, one end of the electric connecting sleeve rod is sleeved on the second voltage reducing component and is electrically connected with the second voltage reducing component, the other end of the electric connecting sleeve rod is electrically connected with the grounding contact point of the developing cartridge chip through one of the electric connecting bands, the end cover is provided with a limiting groove, each electric connecting band is installed into the corresponding limiting groove, and the remaining contact points on the developing cartridge chip are connected to the recognition position through the corresponding electric connecting bands.

[0018] From the above, the chip cavity is arranged separately from the recognition position, which can prevent the chip from loosening after being in contact with the recognition contact point of the printing equipment in the frequent installation process, causing the chip to fall into the machine, and can effectively protect the developing cartridge chip, prevent the contact points of the developing cartridge chip from being damaged, effectively save space, prevent the structure of the recognition position from interfering with the voltage reducing assembly, conveniently improve the structural strength of the chip recognition position, and improve the freedom degree of chip installation.

[0019] Further, the conductive assembly comprises a powder feeding roller shaft and a conductive sheet, the conductive sheet is located at a conductive end of the cartridge body, the conductive end is opposite to the driving end in the length direction, the powder feeding roller shaft and the input end of the first voltage reducing component are electrically connected with the conductive sheet, and the powder feeding roller shaft is located in the containing cavity.

[0020] Further, the conductive assembly comprises a powder feeding roller shaft and a conductive sheet, the powder feeding roller shaft is located in the containing cavity, the conductive sheet is located at a conductive end of the cartridge body, the conductive end is opposite to the driving end in the length direction, the input end of the powder feeding roller shaft is electrically connected with the conductive sheet, and the input end of the first voltage reducing component is electrically connected with the output end of the powder feeding roller shaft.

[0021] From the above, the developing cartridge provided by the scheme is convenient for production and transportation, convenient for disassembly and assembly, and stable and not easy to be damaged in electric connection. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a first perspective exploded view of an embodiment of the present invention developer cartridge.

[0023] Figure 2 is a second perspective exploded view of an embodiment of the present invention developer cartridge.

[0024] Figure 3 is an exploded view of an embodiment of the present invention developer cartridge omitting the left end cap.

[0025] Figure 4 is a partial enlarged view of Figure 2

[0026] Figure 5 is a partial enlarged view of Figure 3

[0027] Figure 6 is a structural view of a second electrical connection of an embodiment of the present invention developer cartridge.

[0028] Figure 7 is a first perspective structural view of a left end cap, developer cartridge chip, and third electrical connection of an embodiment of the present invention developer cartridge.

[0029] Figure 8 is a second perspective structural view of a left end cap, developer cartridge chip, and third electrical connection of an embodiment of the present invention developer cartridge.

[0030] Figure 9 is a structural view of a left end cap of an embodiment of the present invention developer cartridge.

[0031] Figure 10 is a structural view of a developer cartridge chip and third electrical connection of an embodiment of the present invention developer cartridge.

[0032] Figure 11 is a schematic view of a first electrical connection method of an embodiment of the present invention developer cartridge.

[0033] Figure 12 is a schematic view of a second electrical connection method of an embodiment of the present invention developer cartridge.

[0034] Figure 13 is a schematic view of a third electrical connection method of an embodiment of the present invention developer cartridge. DETAILED DESCRIPTION

[0035] Referring to Figures 1 to 5 ​​The developing cartridge provided by the embodiment comprises a cartridge body 1, a powder outlet knife 2, a detection assembly 3, a transmission assembly 4, a stirring frame (not shown in the figure), a driving assembly 6, a left end cover 7, a right end cover 8, a left support 9, a right support 10, a developing roller 11, a conductive assembly 12, a first electric connecting piece 15, a second electric connecting piece 16, a third electric connecting piece 17, a developing cartridge chip 18 and a voltage reduction assembly 19. The conductive assembly 12 comprises a powder feeding roller 13 and a conductive sheet 14, the conductive sheet 14 is electrically connected with a power supply part on a printing device (not shown in the figure) and is connected with a voltage, and the voltage reduction assembly 19 comprises a first voltage reduction piece 20 and a second voltage reduction piece 21. Optionally, the first voltage reduction piece 20 and the second voltage reduction piece 21 can be existing resistance adjustable components such as potentiometers.

[0036] The cartridge body 1 is provided with a containing cavity 25, the containing cavity 25 has a powder outlet 5, the powder outlet knife 2 is installed at the powder outlet 5 of the cartridge body 1, and the stirring frame and the powder feeding roller 13 are rotatably arranged in the containing cavity 25. The cartridge body 1 comprises opposite left and right end walls in the length direction of the cartridge body 1, the left end of the cartridge body 1 is a driving end, and the right end of the cartridge body 1 is a conductive end, wherein the left end cover 7 and the left end wall surround an installation cavity 23, the transmission assembly 4, the driving assembly 6, the left support 9, the first voltage reduction piece 20, the second voltage reduction piece 21, the first electric connecting piece 15, the second electric connecting piece 16 and the third electric connecting piece 17 are located in the installation cavity 23, the left end cover 7 is provided with a chip cavity 24 (shown in the figure) in communication with the installation cavity 23, and the developing cartridge chip 18 is arranged in the chip cavity 24. Figure 7 The right end cover 8 and the cartridge body 1 surround a detection cavity 26, and the detection assembly 3 is arranged in the detection cavity 26. The left support 9 is installed on the left end wall, and the right support 10 is installed on the right end wall. The developing roller 11 comprises a developing roller shaft 33 extending in the length direction, the developing roller 11 is rotatably installed between the left support 9 and the right support 10, and the developing roller 11 is arranged at the powder outlet 5 and is adjacent to the powder outlet knife 2.

[0037] The powder feeding roller 13 comprises a powder feeding roller shaft 34 extending in the length direction, the input end of the powder feeding roller shaft 34 is electrically connected with the conductive sheet 14, and the input end of the first voltage reduction piece 20 is electrically connected with the output end of the powder feeding roller shaft 34 through the first electric connecting piece 15.

[0038] Referring to Figures 5 to 11The driving assembly 6 comprises a developing roller gear 30 sleeved on the left end of the developing roller shaft 33, and the second electric connector 16 is installed on the side of the left support 9 away from the cartridge 1, and is sleeved on the developing roller shaft 33 and installed between the developing roller gear 30 and the left support 9, thereby effectively saving space and facilitating installation and fixation. The second electric connector 16 is provided with a first accommodating groove 27 and a second accommodating groove 28, the first voltage reducer 20 is installed in the first accommodating groove 27, and the second voltage reducer 21 is installed in the second accommodating groove 28. The developing roller 11 and the input end of the second voltage reducer 21 are electrically connected with the output end of the first voltage reducer 20 through the second electric connector 16, that is, the developing roller 11 and the second voltage reducer 21 are connected in parallel.

[0039] Referring to Figure 11 The output end of the second voltage reducer 21 is electrically connected with the ground contact 32 of the developing cartridge chip 18 through the third electric connector 17. The resistance of the first voltage reducer 20 is fixed, and the resistance of the second voltage reducer 21 is adjustable. The left end cover 7 is provided with an adjusting hole 29, and the second voltage reducer 21 is exposed to the developing cartridge from the adjusting hole 29.

[0040] Alternatively, the resistance of one of the first voltage reducer and the second voltage reducer is adjustable, and the adjusting hole is arranged opposite to the adjustable voltage reducer. Or referring to Figure 12 The resistance of the first voltage reducer and the second voltage reducer is adjustable, and the number of the adjusting holes is two, and one adjusting hole is arranged opposite to one voltage reducer.

[0041] The mounting cavity 23 comprises a mounting groove 35 on the inner side of the left end cover 7, the third electric connecting piece 17 comprises an electric connecting sleeve rod 170 and four electric connecting bands 22, the electric connecting sleeve rod 170 is arranged in the mounting groove 35, one electric connecting band 22 is connected to one contact of the developing cartridge chip 18, one of the electric connecting bands 22 is a grounding electric connecting band 220, the grounding electric connecting band 220 is electrically connected to the grounding contact 32 of the developing cartridge chip 18. The output end of the second voltage reducer 21 is electrically connected to the grounding electric connecting band 220 through the electric connecting sleeve rod 170, one end of the electric connecting sleeve rod 170 is sleeved on the second voltage reducer 21, the electric connecting sleeve rod 170 and the grounding electric connecting band 220 are detachably connected in a plug-in manner or fixedly connected in a welding manner, facilitating installation and dismounting. Optionally, the electric connecting sleeve rod 170 and the grounding electric connecting band 220 are integrally formed. The outer wall of the left end cover 7 is provided with a chip identification position 36, the chip cavity 24 is away from the identification position 36, the identification position 36 is close to the electronic imaging equipment chip identification contact (not shown in the figure), the contacts on the developing cartridge chip 18 are connected to the identification position through the corresponding electric connecting bands 22. The identification position 36 is provided with a plurality of limiting grooves, one electric connecting band 22 is mounted into one corresponding limiting groove 31, the electric connecting band 22 and the limiting groove 31 are preferably in interference fit, which can effectively limit the electric connecting band 22, and the developing cartridge chip 18 is electrically connected to the chip identification contact of the electronic imaging equipment through the electric connecting band 22. The electric connecting sleeve rod 170 and the mounting to the left end cover 7 can be pre-processed, and then the left end cover 7 is combined with the cartridge body, facilitating production. Optionally, the chip cavity can also be directly arranged on the identification position.

[0042] Referring to Figure 13 An optional electric connection scheme is that the input end of the powder feeding roller shaft and the input end of the first voltage reducer are electrically connected to the conductive sheet, that is, the powder feeding roller and the first voltage reducer are connected in parallel, the developing roller shaft is electrically connected to the output end of the first voltage reducer, the input end of the second voltage reducer is electrically connected to the output end of the first voltage reducer, and the output end of the second voltage reducer is electrically connected to the grounding contact of the developing cartridge chip.

[0043] An optional electric connection scheme is that only the first voltage reducer is arranged, the resistance value of the first voltage reducer is adjustable, the first voltage reducer is electrically connected to the conductive assembly, and the developing roller shaft and the grounding contact of the developing cartridge chip are both electrically connected to the output end of the first voltage reducer.

[0044] As can be seen from the above, the developing cartridge of the present application is convenient for production and transportation, easy to dismount and assemble, and stable in electric connection and not easy to be damaged.

[0045] It should be noted that the above is only a preferred embodiment of the present application, but the design concept of the present application is not limited thereto, and any non-essential modification of the present application made by using the concept also falls within the protection scope of the present application.

Claims

1.A developing cartridge comprising a cartridge body, a left bracket, a developing roller gear, a developing roller, a conductive assembly, a developing cartridge chip and a voltage reduction assembly; the left bracket is mounted on a left end wall of the cartridge body in a length direction of the cartridge body; the developing cartridge chip, the voltage reduction assembly and the conductive assembly are all arranged on the cartridge body; the cartridge body is provided with a containing cavity having a powder outlet; the developing roller comprises a developing roller shaft extending in the length direction, and the developing roller is rotatably supported at the powder outlet; characterized in that: the conductive assembly is electrically connected with an input end of the voltage reduction assembly; an output end of the voltage reduction assembly is electrically connected with a ground contact of the developing cartridge chip; the developing cartridge further comprises an end cover arranged at a driving end of the cartridge body, an installation cavity is formed between the end cover and an end wall of the driving end of the cartridge body, and the voltage reduction assembly is located in the installation cavity; the developing cartridge further comprises a first electrical connector and a second electrical connector arranged in the installation cavity, the second electrical connector is mounted on a side of the left bracket away from the cartridge body, the second electrical connector is sleeved on the developing roller shaft and is mounted between the developing roller gear and the left bracket, and the second electrical connector is provided with a first accommodating groove and a second accommodating groove; the voltage reduction assembly comprises a first voltage reduction component and a second voltage reduction component, the first voltage reduction component is mounted in the first accommodating groove, the second voltage reduction component is mounted in the second accommodating groove, and an input end of the first voltage reduction component is electrically connected with the conductive assembly through the first electrical connector; an input end of the developing roller shaft and an input end of the second voltage reduction component are both electrically connected with an output end of the first voltage reduction component through the second electrical connector, and an output end of the second voltage reduction component is electrically connected with the ground contact; the first voltage reduction component, the second voltage reduction component and the developing cartridge chip are all arranged on the same side of the cartridge body. 2.The developing cartridge according to claim 1, characterized in that: at least one of the first voltage reduction component and the second voltage reduction component has an adjustable resistance value; the end cover is provided with at least one adjusting hole and a chip cavity, and the voltage reduction component with the adjustable resistance value is exposed to the developing cartridge through the corresponding adjusting hole, and the developing cartridge chip is mounted in the chip cavity. 3.The developing cartridge according to claim 2, characterized in that: an identification position of the chip is arranged on an outer wall of the end cover; the chip cavity is located on the identification position; or the chip cavity is arranged in a spaced manner with the identification position. 4.The developing cartridge according to claim 3, characterized in that: the developing cartridge further comprises a third electrical connector arranged in the installation cavity; the output end of the second voltage reduction component is electrically connected with the ground contact through the third electrical connector. 5.The developing cartridge according to claim 4, characterized in that: the third electrical connector comprises an electrical connection sleeve rod and two or more electrical connection bands, one end of the electrical connection sleeve rod is sleeved on the second voltage reduction component and is electrically connected with the second voltage reduction component, and the other end of the electrical connection sleeve rod is electrically connected with the ground contact of the developing cartridge chip through one of the electrical connection bands. The end cover is provided with a limiting slot, and each electric connection belt is installed into the corresponding limiting slot; The remaining contacts on the developing cartridge chip are connected to the identification bit through the corresponding electric connection belt. 6.The developing cartridge according to any one of claims 1 to 5, characterized in that: The conductive assembly includes a powder feeding roller shaft and a conductive sheet, the conductive sheet is located at a conductive end of the cartridge body, the conductive end is opposite to the driving end in the length direction, the input end of the first voltage reducer and the powder feeding roller shaft are electrically connected with the conductive sheet, and the powder feeding roller shaft is located in the accommodating cavity. 7.The developing cartridge according to any one of claims 1 to 5, characterized in that: The conductive assembly includes a powder feeding roller shaft and a conductive sheet, the powder feeding roller shaft is located in the accommodating cavity, the conductive sheet is located at a conductive end of the cartridge body, the conductive end is opposite to the driving end in the length direction, and the input end of the powder feeding roller shaft is electrically connected with the conductive sheet; The input end of the first voltage reducer is electrically connected with the output end of the powder feeding roller shaft.

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