Processing box and image forming equipment using same

Abstract

The utility model discloses a processing box which comprises a developing assembly, the developing assembly comprises a developing frame, a magnetic roller, a doctor blade and a forced pushing assembly, the magnetic roller is rotatably installed on the developing frame, the doctor blade can move relative to the magnetic roller and can be matched with the outer surface of the magnetic roller to form a space for outputting a developing agent, and the forced pushing assembly is installed on the developing frame. And the forced pushing assembly is used for forcibly pushing the powder knife to move towards the magnetic roller and can maintain the size of the distance. The utility model also discloses an image forming device. According to the utility model, the developing agent can be stably output from the interval, the phenomenon that the printed carbon powder image is non-uniform in concentration or dark in periodic color or light in color is avoided, and the quality of the printed carbon powder image is improved.

Description

Technical Field

[0001] The utility model relates to a processing cartridge and an image forming apparatus using the same. Background Art

[0002] In the prior art, the processing cartridge used in an image forming apparatus such as a printer or a copier is used to form a toner image on paper. The amount of toner required to form the toner image is mainly provided by the amount of developer on the surface of the magnetic roller, and the amount of developer is controlled by controlling the distance between the doctor blade and the magnetic roller. Usually, the doctor blade and the magnetic roller are fixed on a plastic part, and the distance is fixed and depends on the dimensional tolerance of the plastic part. Considering the factor of the jump of the magnetic roller itself, it is difficult to ensure the fineness of the control of the distance between the doctor blade and the magnetic roller, which may cause problems such as uneven concentration of the printed toner image or periodic dark or light colors, reducing the quality of the printed toner image. Summary of the Utility Model

[0003] According to one aspect of the present utility model, there is provided a processing cartridge, comprising:

[0004] A developing assembly, including a developing frame, a magnetic roller, a doctor blade and a pushing assembly. The magnetic roller is rotatably mounted on the developing frame. The doctor blade can move relative to the magnetic roller and can cooperate with the outer surface of the magnetic roller to form a distance for outputting the developer. The pushing assembly is used to push the doctor blade towards the magnetic roller and can maintain the size of the distance.

[0005] In the processing cartridge of the present utility model, by providing the pushing assembly, the doctor blade can be pushed towards the magnetic roller, and the size of the distance formed by the cooperation between the doctor blade and the outer surface of the magnetic roller can be kept relatively stable, so that the developer can be stably output from the distance, thereby avoiding the occurrence of uneven concentration of the printed toner image or periodic dark or light colors, and improving the quality of the printed toner image.

[0006] In some embodiments, the pushing assemblies are respectively arranged at both ends of the doctor blade.

[0007] In some embodiments, the pushing assembly includes an elastic member and a distance limiting member. The elastic member is arranged on the side of the doctor blade away from the magnetic roller and is used to push the doctor blade towards the magnetic roller. The distance limiting member is used to separate the doctor blade from the magnetic roller to maintain the size of the distance, and as the magnetic roller rotates, the distance limiting member can rotate synchronously.

[0008] In some embodiments, the distance limiting member is rotatably mounted on the side of the doctor blade close to the magnetic roller and contacts the magnetic roller.

[0009] In some embodiments, the distance limiting member is coaxially arranged with the doctor blade and contacts the magnetic roller, or the distance limiting member is coaxially arranged with the magnetic roller and contacts the doctor blade.

[0010] In some embodiments, the developing assembly further includes a limiting structure for restricting the powder outlet blade from detaching from the developing frame.

[0011] In some embodiments, the limiting structure includes a limiting member and a limiting groove. The limiting groove is formed on the powder outlet blade, and the limiting member is disposed on the developing frame and can cooperate with the limiting groove of the powder outlet blade to restrict the powder outlet blade from detaching from the developing frame.

[0012] In some embodiments, the limiting structure includes two mounting grooves respectively formed at two ends of the developing frame, and two ends of the powder outlet blade pass through the two mounting grooves and are mounted on the developing frame.

[0013] In some embodiments, the powder outlet blade is provided in a plate shape or a cylindrical shape.

[0014] According to another aspect of the present invention, there is provided an image forming apparatus, including an image forming apparatus body and the processing cartridge as described above, and the processing cartridge is detachably mounted on the image forming apparatus body.

[0015] In the image forming apparatus of the present invention, by providing a processing cartridge with a pressing component, the pressing component is used to push the powder outlet blade towards the direction of the magnetic roller and keep the distance formed by the cooperation between the powder outlet blade and the outer surface of the magnetic roller relatively stable, so that the developer can be stably output from the distance, thereby avoiding the phenomenon of uneven density of the printed toner image or periodic dark or light color, and improving the quality of the printed toner image. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of the processing cartridge in the present invention;

[0017] Figure 2 is a perspective view of the developing assembly in the first embodiment of the present invention;

[0018] Figure 3 is Figure 2 an enlarged schematic view of the structure of A in;

[0019] Figure 4 is a perspective view of the developing assembly in the second embodiment of the present invention;

[0020] Figure 5 is Figure 4 an enlarged schematic view of the structure of B in.

[0021] In the figure: 10, drum assembly; 20, developing assembly; 201, developing frame; 202, magnetic roller; 203, powder outlet blade; 204, elastic member; 205, distance limiting member; 206, limiting member; 207, limiting groove; 208, mounting groove; 209, contact position; 210, avoidance notch; 211, support member; 212, end portion. Detailed implementation manners

[0022] The following further describes the present utility model in detail with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model belong to the scope protected by the present utility model.

[0023] It should be noted that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0024] In the present utility model, unless otherwise clearly defined and limited, the terms "mounting", "connecting", "fixing", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0026] In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0027] Embodiment 1:

[0028] This embodiment provides an image forming apparatus, including an image forming apparatus main body and a processing cartridge. The processing cartridge is detachably mounted on the image forming apparatus main body, whereby the replacement of the processing cartridge can be facilitated.

[0029] Please refer to Figure 1-2 , the processing cartridge includes a developing assembly 20. Among them, the developing assembly 20 includes a developing frame 201, a magnetic roller 202, a blade 203, and a pushing assembly. The magnetic roller 202 is rotatably mounted on the developing frame 201. The blade 203 can move relative to the magnetic roller 202 and can cooperate with the outer surface of the magnetic roller 202 to form a gap for outputting the developer. The pushing assembly is used to push the blade 203 towards the magnetic roller 202 and can maintain the size of the gap, so that the developer can be stably output from the gap, thereby avoiding the phenomenon of uneven concentration of the printed toner image or periodic dark or light color, and improving the quality of the printed toner image.

[0030] In some embodiments, please refer to Figure 1 , the processing cartridge further includes a drum assembly 10. The drum assembly 10 can be two components independent of the developing assembly 20, or the developing assembly 20 is detachably mounted on the drum assembly 10. Specifically, please refer to Figure 1-2 , the developing assembly 20 is detachably mounted on the drum assembly 10 through the developing frame 201.

[0031] During specific implementation, please refer to Figure 2 , the developing frame 201 is actually a plastic part, which is used to provide effective support for the magnetic roller 202, the blade 203, and the pushing assembly.

[0032] Please refer to Figure 2 , the number of the pushing assemblies is preferably two. The two pushing assemblies are respectively arranged at both ends of the blade 203, that is, the two pushing assemblies apply thrust to both ends of the blade 203 and adjust the size of the gap, so that both ends of the blade 203 are more evenly stressed and more conducive to maintaining the size of the gap. Of course, the number of the pushing assemblies can also be specifically set according to actual needs.

[0033] Please refer to Figure 2-3, each pushing component includes an elastic member 204 and a distance limiting member 205. The elastic member 204 is arranged on the side of the powder outlet blade 203 away from the magnetic roller 202 and is used to push the powder outlet blade 203 to move towards the magnetic roller 202. The distance limiting member 205 is used to separate the powder outlet blade 203 from the magnetic roller 202 to maintain the size of the distance, and as the magnetic roller 202 rotates, the distance limiting member 205 can rotate synchronously. In this way, under the action of the elastic member 204 providing a continuous pushing force on the powder outlet blade 203 towards the magnetic roller 202, a fixed distance can be achieved between the distance limiting member 205 between the powder outlet blade 203 and the magnetic roller 202.

[0034] Please refer to Figure 2-3 , the distance limiting member 205 is rotatably installed on the side of the powder outlet blade 203 close to the magnetic roller 202 and contacts the magnetic roller 202. With such a setting, the distance limiting member 205 can be closer to the magnetic roller 202 than the powder outlet blade 203, which is beneficial to the fixed distance between the distance limiting member 205 between the powder outlet blade 203 and the magnetic roller 202.

[0035] Please refer to Figure 2-3 , the developing component 20 further includes a limiting structure, and the limiting structure is used to limit the powder outlet blade 203 from detaching from the developing frame 201. Thus, while realizing the movement of the powder outlet blade 203 relative to the magnetic roller 202, the effective installation of the powder outlet blade 203 on the developing frame 201 is ensured.

[0036] Please refer to Figure 2-3 , the limiting structure includes a limiting member 206 and a limiting groove 207. The limiting groove 207 is opened on the powder outlet blade 203, and the limiting member 206 is arranged on the developing frame 201 and can cooperate with the limiting groove 207 of the powder outlet blade 203, that is, the limiting member 206 can be movably assembled with the limiting groove 207, so that while the powder outlet blade 203 moves relative to the magnetic roller 202, the powder outlet blade 203 is prevented from detaching from the limiting member 206, thereby effectively restricting the powder outlet blade 203 from detaching from the developing frame 201. Please refer to Figure 3 , the limiting member 206 is preferably rod-shaped, the limiting groove 207 is preferably a long groove, and the limiting member 206 has a certain degree of freedom along the extension direction of the limiting groove 207 in the limiting groove 207 without separation. With such a limiting structure, while the powder outlet blade 203 can move relative to the magnetic roller 202 along the extension direction of the limiting groove 207, the powder outlet blade 203 is prevented from detaching from the limiting member 206.

[0037] During specific implementation, please refer to Figure 2-3, two limit members 206 are provided on the developing frame 201. Correspondingly, limit slots 207 are provided at both ends of the toner blade 203. The toner blade 203 is mounted on the two limit members 206 of the developing frame 201 through the two limit slots 207 and can move relative to the magnetic roller 202. The elastic member 204 is preferably a compression spring, and the distance-limiting member 205 is preferably a distance-limiting bushing. Of course, the elastic member 204 can also be a tension spring, a torsion spring, a spring sheet, an elastic rubber, an elastic sponge, etc., and the distance-limiting member 205 can also be a roller, a ball, etc. The number of both the compression spring and the distance-limiting bushing is set to two. One end of each of the two compression springs is fixed on the developing frame 201, and the other end of each of the two compression springs abuts against one side of both ends of the toner blade 203 away from the magnetic roller 202, so that the two compression springs provide a thrust force on the outside of the toner blade 203 to always push both ends of the toner blade 203 towards the magnetic roller 202. In order not to affect the output of the developer by the magnetic roller 202, the two distance-limiting bushings are in movable contact with both ends of the magnetic roller 202 respectively, that is, the two distance-limiting bushings are arranged on one side of both ends of the toner blade 203 close to the magnetic roller 202 and are in movable contact with both ends of the magnetic roller 202.

[0038] Please refer to Figure 2-3 , support members 211 are provided at both ends of the developing frame 201, and the two compression springs are fixed on the developing frame 201 through the support members 211. The support members 211 are integrally formed with the developing frame 201, and the stability of its installation structure is higher and the production is simpler.

[0039] Specifically, please refer to Figure 3 , the distance-limiting bushing is rotatably mounted on one side of the toner blade 203 away from the magnetic roller 202 through a shaft body parallel to the magnetic roller 202, so as to realize the effective rotation of the distance-limiting bushing on the toner blade 203, so that the distance-limiting bushing can be in movable contact with the magnetic roller 202 without affecting the rotation of the magnetic roller 202.

[0040] More specifically, please refer to Figure 2-3 , the middle body of the magnetic roller 202 is used to output the developer. Contact positions 209 are provided at both ends of the magnetic roller 202. Avoidance notches 210 corresponding to the above contact positions 209 are provided on one side of the toner blade 203 close to the magnetic roller 202. The two distance-limiting bushings are rotatably mounted in the two avoidance notches 210 of the toner blade 203 and protrude from the avoidance notches 210 towards the magnetic roller 202. Such a setting not only reasonably utilizes the space between the toner blade 203 and the magnetic roller 202, but also improves the stability of the installation structure of the distance-limiting bushing. The cylindrical outer surface of the distance-limiting bushing can be in sliding contact with the magnetic roller 202, and the two distance-limiting bushings can be in movable contact with the contact positions 209 at both ends of the magnetic roller 202 to separate the toner blade 203 from the magnetic roller 202 so as to better maintain the size of the distance.

[0041] Please refer to Figure 2-3, the flour discharging blade 203 is set in a plate shape, which is beneficial for the flour discharging blade 203 to move relative to the magnetic roller 202 along the limiting groove 207.

[0042] Embodiment 2:

[0043] This embodiment provides another processing cartridge and an image forming apparatus using the same. Compared with Embodiment 1, the difference is that another developing assembly 20 is provided. Please refer to Figure 4-5 , the limiting structure includes two mounting grooves 208 which are respectively opened at both ends of the developing frame 201. Both ends of the flour discharging blade 203 pass through the two mounting grooves 208 and are mounted on the developing frame 201. The distance limiting member 205 is coaxially arranged with the flour discharging blade 203 and contacts the magnetic roller 202. Specifically, the two mounting grooves 208 are opened on two supporting members 211, and two compression springs are respectively installed in the two mounting grooves 208. Both ends of the flour discharging blade 203 pass through the two mounting grooves 208 respectively and are pushed by the compression springs in the mounting grooves 208 to move towards the magnetic roller 202. The distance limiting bushing is coaxially arranged with the flour discharging blade 203 and is in movable contact with the magnetic roller 202. Thus, by correspondingly arranging compression springs and distance limiting bushings at both ends of the flour discharging blade 203, and the two compression springs are respectively installed in the mounting grooves 208 of the two supporting members 211, the mounting structure is more stable, and the compression springs in the two mounting grooves 208 provide a thrust force for both ends of the flour discharging blade 203 to always move towards the magnetic roller 202, so as to better realize the fixed distance limiting of the distance limiting member 205 between the flour discharging blade 203 and the magnetic roller 202.

[0044] During specific implementation, please refer to Figure 5 , the mounting groove 208 is a long groove on the supporting member 211, and the compression spring is arranged along the extending direction of the long groove, which is beneficial for the compression spring to contact the flour discharging blade 203 and provide a thrust force for both ends of the flour discharging blade 203 to always move towards the magnetic roller 202. At both ends of the flour discharging blade 203, there are end portions 212 formed by axially extending the main body of the flour discharging blade 203. The outer diameters of these two end portions 212 are smaller than the outer diameter of the main body of the flour discharging blade 203, and the outer diameters of the two end portions 212 are slightly smaller than the diameters of the long grooves on the two supporting members 211, so that the two end portions 212 on the flour discharging blade 203 can be installed in the long grooves on the two supporting members 211 and have a certain degree of freedom in the long grooves, achieving the purpose of saving materials of the supporting members 211, so that the two compression springs respectively contact the two end portions 212 and provide a thrust force for both ends of the flour discharging blade 203 to always move towards the magnetic roller 202.

[0045] Please refer to Figure 5, the two spacing sleeves are arranged such that both ends of the powder outlet blade 203 extend and thicken circumferentially around its outer circumference to be closer to the magnetic roller 202 than the powder outlet blade 203. The two spacing sleeves arranged in this way correspond to the contact positions 209 at both ends of the magnetic roller 202. The cylindrical outer surface of the spacing sleeve can be in sliding contact with the contact positions 209 of the magnetic roller 202, and is integrally formed with the powder outlet blade 203, so the stability of its installation structure is higher and the production is more convenient. Of course, the spacing sleeves can also be installed on the powder outlet blade 203 by means of sleeving.

[0046] Please refer to Figure 4-5 , the powder outlet blade 203 is arranged to be cylindrical, which is beneficial to the production of the spacing sleeves arranged coaxially therewith.

[0047] In other embodiments, the spacing member 205 can also be arranged coaxially with the magnetic roller 202 and in contact with the powder outlet blade 203, that is, the two spacing sleeves are arranged such that the contact positions 209 at both ends of the magnetic roller 202 extend and thicken circumferentially around its outer circumference to be closer to the powder outlet blade 203 than the magnetic roller 202, or alternatively, the spacing sleeves can also be installed on the contact positions 209 at both ends of the magnetic roller 202 by means of sleeving.

[0048] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A processing box, characterized in that: include: The developing assembly comprises a developing frame, a magnetic roller, a powder discharge knife and a forced pushing assembly. The magnetic roller is rotatably mounted on the developing frame. The powder discharge knife can move relative to the magnetic roller and can cooperate with the outer surface of the magnetic roller to form a spacing for outputting the developer. The forced pushing assembly is used to force the powder discharge knife to move toward the magnetic roller and can maintain the size of the spacing.

2. The process cartridge according to claim 1, wherein: The forced pushing components are respectively arranged on both ends of the powder discharging knife.

3. The process cartridge according to claim 1 or 2, wherein: The forced pushing assembly includes an elastic member and a distance limiting member. The elastic member is arranged on the side of the powder discharge knife away from the magnetic roller and is used to force the powder discharge knife to move toward the magnetic roller. The distance limiting member is used to separate the powder discharge knife and the magnetic roller to maintain the size of the distance, and the distance limiting member can rotate synchronously with the rotation of the magnetic roller.

4. The process cartridge according to claim 3, wherein: The distance limiting member is rotatably mounted on a side of the powder discharging knife close to the magnetic roller and is in contact with the magnetic roller.

5. The process cartridge according to claim 3, wherein: The distance limiting member is coaxially arranged with the powder discharging knife and contacts with the magnetic roller, or the distance limiting member is coaxially arranged with the magnetic roller and contacts with the powder discharging knife.

6. The process cartridge according to claim 1, wherein: The developing assembly further comprises a limiting structure, and the limiting structure is used to limit the powder discharging knife from being separated from the developing frame.

7. The process cartridge according to claim 6, wherein: The limiting structure comprises a limiting member and a limiting groove, wherein the limiting groove is provided on the powder discharge knife, and the limiting member is arranged on the developing frame and can cooperate with the limiting groove of the powder discharge knife to limit the powder discharge knife from leaving the developing frame.

8. The process cartridge according to claim 6, wherein: The limiting structure comprises two mounting grooves, which are respectively arranged on two ends of the developing frame, and the two ends of the powder discharging knife are penetrated by the two mounting grooves and are installed on the developing frame.

9. The process cartridge according to claim 1, wherein: The powder discharging knife is configured to be plate-shaped or cylindrical.

10. An image forming device, characterized in that: The invention comprises an image forming apparatus body and a process cartridge according to any one of claims 1 to 9, wherein the process cartridge is detachably mounted on the image forming apparatus body.

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