Developing cartridge

Abstract

The developing box comprises a developing shell and a developing roller rotatably arranged in the developing shell, the developing roller rotates around a first rotating axis parallel to the left-right direction, the developing shell comprises a powder bin used for containing a developing agent, and a first developing agent supplementing opening is formed in one of the left end and the right end of the developing shell; the developing box further comprises a developing agent supplementing bin provided with a first containing cavity and a second containing cavity which are arranged in the left-right direction, and the developing agent supplementing bin is provided with a second developing agent supplementing opening and a third developing agent supplementing opening. Developing agents can be supplemented to the first containing cavity and the second containing cavity through the second developing agent supplementing opening and the third developing agent supplementing opening respectively. The first developing agent supplementing opening, the second developing agent supplementing opening and the third developing agent supplementing opening are directly exposed outside the developing box; therefore, it can be ensured that the first containing cavity and the second containing cavity can be filled with the developer as much as possible, and the filling mode is simple, convenient and rapid.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electrophotographic imaging, especially to a developing box which can be detachably installed in an imaging device. BACKGROUND

[0002] The developing box can be detachably installed in the imaging device, and the developing box comprises a developing housing and a developing roller rotatably arranged in the developing housing. A powder bin for accommodating a developing agent required for imaging of the imaging device is formed in the developing housing. The developing roller is used for supplying the developing agent to a photosensitive component outside the developing box. A first powder filling port for filling the developing agent into the powder bin is arranged on the developing housing.

[0003] A developing box is provided with a developing agent supplementing box to increase the service life of the developing box. The developing agent supplementing box is in communication with the powder bin. As the developing agent in the powder bin is continuously consumed, the developing agent can be supplemented into the powder bin. However, after the developing agent supplementing box is added to the developing box, the process of filling the developing agent into the powder bin and the developing agent supplementing box will become complicated. Moreover, the powder bin and the developing agent supplementing box are not easy to be supplemented with a predetermined amount of developing agent again. SUMMARY

[0004] The developing box provided by the utility model can at least solve one of the above technical problems. The specific technical solutions are as follows.

[0005] The developing box can be detachably installed in the imaging device, and the developing box comprises a developing housing and a developing roller rotatably arranged in the developing housing. A powder bin for accommodating a developing agent required for imaging of the imaging device is formed in the developing housing. The developing roller is used for supplying the developing agent to a photosensitive component outside the developing box. A first powder filling port for filling the developing agent into the powder bin is arranged on the developing housing.

[0006] The developing housing is provided with a first developing agent supplementing port at one of the left and right ends. The developing agent can be filled into the powder bin through the first developing agent supplementing port. The developing box further comprises a developing agent supplementing bin for supplementing the developing agent into the powder bin. The developing agent supplementing bin is in communication with the powder bin. The developing agent supplementing bin comprises a supply cavity for accommodating the developing agent. The supply cavity comprises a first accommodating cavity and a second accommodating cavity arranged along the left-right direction.

[0007] The developing agent supplementing bin is further provided with a second developing agent supplementing port and a third developing agent supplementing port. The developing agent can be supplemented into the first accommodating cavity through the second developing agent supplementing port and supplemented into the second accommodating cavity through the third developing agent supplementing port. The first developing agent supplementing port, the second developing agent supplementing port and the third developing agent supplementing port are all directly exposed outside the developing box.

[0008] In the left-right direction, one of the second developer replenishing port and the third developer replenishing port is located at the same end of the developing cartridge as the first developer replenishing port.

[0009] After the developer replenishing cartridge is installed to the developing housing, a laser port is formed between the developer replenishing cartridge and the developing housing, and laser emitted from the image forming apparatus can reach the surface of the photosensitive member through the laser port.

[0010] The developer replenishing cartridge includes a first housing and a second housing combined with each other, the supply cavity is formed between the first housing and the second housing, the second housing includes a first side wall, a second side wall and a third side wall connected in sequence, the first side wall and the third side wall are located at the left and right ends of the second side wall, the second developer replenishing port is located on the first side wall, and the third developer replenishing port is located on the third side wall.

[0011] An inner surface of the second side wall facing the supply cavity is an inclined surface, and the distance from the inner surface to the powder cartridge gradually decreases from the middle position in the left-right direction of the developing cartridge to the direction of the left end and the direction of the right end, respectively.

[0012] An outer surface of the second side wall facing the developing housing is provided as an inclined surface, and the distance from the outer surface to the powder cartridge gradually decreases from the middle position in the left-right direction of the second side wall to the direction of the left end and the direction of the right end, respectively.

[0013] The second housing / second side wall is provided with a first developer supply port and a second developer supply port, the first developer supply port is used to communicate the first containing cavity and the powder cartridge, and the second developer supply port is used to communicate the second containing cavity and the powder cartridge; in the left-right direction, one of the second developer replenishing port and the third developer replenishing port, the first developer replenishing port and the first developer supply port are located at the same end of the developing cartridge.

[0014] The opening direction of the first developer replenishing port intersects with the opening direction of the first developer supply port.

[0015] Along the direction from right to left, the first developer supply port passes through the straight line passing through the center of the second developer replenishing port and the third developer replenishing port and the center of the first developer replenishing port, when the second developer replenishing port and the third developer replenishing port, the first developer replenishing port and the first developer supply port are projected to the plane perpendicular to the left-right direction.

[0016] The first containing cavity and the second containing cavity are communicated with each other; the first containing cavity and the second containing cavity are not communicated.

[0017] Compared with the prior art, the developer box provided by the present invention is provided with a second developer replenishing port and a third developer replenishing port. The user can fill the developer into the first accommodating chamber through the second developer replenishing port, or fill the developer into the second accommodating chamber through the third developer replenishing port, thereby ensuring that both the first accommodating chamber and the second accommodating chamber can be filled with as much developer as possible; during the filling process, such a filling method does not require multiple vibrations or multiple rotations of the developer box, and filling the developer becomes simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1A and Figure 1B It is a three-dimensional diagram of the developing box involved in the present utility model.

[0019] Figure 2 The utility model relates to a developing box edge Figure 1A The plan view after cutting along the AA direction.

[0020] Figure 3 It is a three-dimensional diagram of a developing shell in a developing box involved in the present invention.

[0021] Figure 4A and Figure 4B It is a three-dimensional diagram of a developer replenishing bin of a developer cartridge involved in the present invention.

[0022] Figure 5 The utility model is an exploded view of a developer replenishing bin in a developer box.

[0023] Figure 6 The present invention relates to a developing shell and a developer replenishing chamber in a developing box. Figure 1B The plan view after cutting along the BB direction.

[0024] Figure 7 It is a plan view of the second developer replenishing port and one of the third developer replenishing port, the first developer replenishing port and the first developer supply port in the developer box involved in the present invention projected onto a plane perpendicular to the left-right direction from right to left. DETAILED DESCRIPTION

[0025] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0026] The developing cartridge 100 is detachably mounted to an image forming apparatus, such as Figure 1A 、 Figure 1B and Figure 2 As shown, the developing cartridge 100 includes a developing housing 10 and a developing roller 20 rotatably disposed in the developing housing 10 . The developing roller 20 rotates around a first rotation axis L1 , and a direction parallel to the first rotation axis L1 is a left-right direction.

[0027] The developing housing 10 comprises a cover 11 and a main housing 12 combined with each other, the developing roller 20 is arranged on one of the cover 11 and the main housing 12, a powder bin 13 for accommodating the developer is formed between the cover 11 and the main housing 12, the developing roller 20 is used for supplying the developer to a photosensitive component arranged opposite to the developing roller 20; the developing cartridge 100 further comprises a powder discharge blade 40, a powder discharge port 41 and a first sealing member, the developer in the powder bin 13 is conveyed to the developing roller 20 through the powder discharge port 41, the powder discharge blade 40 is used for adjusting the thickness of the developer on the surface of the developing roller 20, and the first sealing member is used for sealing the powder discharge port 41 to avoid leakage of the developer when the developing cartridge 100 is not used, and the developer can be conveyed to the developing roller 20 only after the first sealing member is removed when the developing cartridge 100 is used.

[0028] The developing cartridge 100 further comprises a driving force receiving member 50 for receiving driving force from the image forming device, and the developing roller 20 can receive the driving force from the driving force receiving member 50 to rotate around the first rotation axis L1, the developing cartridge 100 is provided with a driving end and a non-driving end in the left-right direction, the driving end is located at the right end of the developing housing 10, and the non-driving end is located at the left end of the developing housing 10.

[0029] Continuing as shown in Figure 1A and Figure 1B , the developing housing 10 comprises a left side wall 15 and a right side wall 16 arranged at intervals in the left-right direction, and the developing housing 10 is provided with a first developer supplementing port 111 on one of the left side wall 15 and the right side wall 16, and the developing cartridge 100 further comprises a fourth sealing member 113 for sealing the first developer supplementing port 111.

[0030] As shown in Figure 3 , the developing housing 10 is further provided with at least one developer receiving port 112, and the developer outside the powder bin 13 can enter the powder bin 13 through the developer receiving port 112, and the first developer supplementing port 111 and the developer receiving port 112 are located on different side walls of the developing housing 10; in some embodiments, the number of the developer receiving ports 112 is two, and the two developer receiving ports 122 are respectively arranged adjacent to the left side wall 15 and the right side wall 16 of the developing housing 10.

[0031] In some embodiments, the developing housing 10 is further provided with a first handle 14 for gripping the developing cartridge 100, the first handle 14 is formed with a finger access recess and is provided with an anti-slip member for preventing the developing cartridge 100 from falling off during gripping, and the anti-slip member is arranged as a rib; in the left-right direction, the first handle 14 is located between the two developer receiving ports 122.

[0032] As shown in Figure 1A , Figure 1B , Figure 2 ,Figure 4A 、 Figure 4B and Figure 5 As shown, the developer box 100 also includes a developer replenishing bin 60 for replenishing the developer to the powder bin 13. The developer replenishing bin 60 includes a first shell 61 and a second shell 62 that are combined with each other. A supply cavity for accommodating the developer is formed between the first shell 61 and the second shell 62. The supply cavity includes a first accommodating cavity 63 and a second accommodating cavity 64 arranged in the left and right directions. In some embodiments, the first accommodating cavity 63 and the second accommodating cavity 64 are connected to each other.

[0033] After the developer replenishing chamber 60 is installed to the developing housing 10 , a laser port 30 is formed between the developer replenishing chamber 60 and the developing housing 10 . The laser emitted by the imaging device can reach the surface of the photosensitive component through the laser port 30 , exposing the surface of the photosensitive component.

[0034] like Figure 1B 、 Figure 4A 、 Figure 4B 、 Figure 5 and Figure 6 As shown, the second shell 62 includes a first side wall 621, a second side wall 622 and a third side wall 623 which are connected in sequence, and the first side wall 621 and the third side wall 623 are respectively located at the left and right ends of the second shell 62 / second side wall 622; a second developer replenishing port 65 is provided on the first side wall 621, and a third developer replenishing port 66 is provided on the third side wall 623. The second developer replenishing port 65 is used to connect the inside and outside of the first accommodating chamber 63, and the third developer replenishing port 66 is used to connect the inside and outside of the second accommodating chamber 64. The user can fill the developer into the first accommodating chamber 63 through the second developer replenishing port 65, or fill the developer into the second accommodating chamber 64 through the third developer replenishing port 66; the developer replenishing box 100 also includes a second seal and a third seal, the second seal is used to seal the second developer replenishing port 65, and the third seal is used to seal the third developer replenishing port 66.

[0035] In the left-right direction, one of the second developer replenishing port 65 and the third developer replenishing port 66 is located at the same end of the developing cartridge 100 as the first developer replenishing port 111. Figure 1B 、 Figure 4A 、 Figure 4B 、 Figure 5 and Figure 6The second developer supplementing port 65 is located on the left side of the developing cartridge 100 / developing housing 10, and the third developer supplementing port 66 is located on the right side of the developing cartridge 100 / developing housing 10, which are taken as examples for description; the first developer supplementing port 111, the second developer supplementing port 65 and the third developer supplementing port 66 are all directly exposed outside the developing cartridge 100, so that the user can directly fill the developer into the powder bin 13 and the supply cavity.

[0036] In the developer supplementing bin 60, the inner surface 6221 of the second side wall 622 facing the supply cavity is an inclined surface, so that the developer in the supply cavity flows from the middle to the left end and the right end respectively; or in other words, from the approximate middle position of the length direction / left-right direction of the developing cartridge 100, the distance from the inner surface 6221 to the powder bin 13 gradually decreases in the direction of the left end and the direction of the right end respectively.

[0037] In some embodiments, the outer surface 6222 of the second side wall 622 facing the developing housing 10 is an inclined surface, so that from the approximate middle position of the length direction / left-right direction of the developing cartridge 100, the distance from the outer surface 6222 to the powder bin 13 gradually decreases in the direction of the left end and the direction of the right end respectively.

[0038] The filling process of the developing cartridge provided by the utility model is as follows: the first developer supplementing port 111 and the second developer supplementing port 65 are opened, the third developer supplementing port 66 is sealed, then the first containing cavity 63 and the powder bin 13 are filled with developer at the same time, after the filling is completed, the opened second developer supplementing port 65 and the first developer supplementing port 111 are sealed, finally the developing cartridge 100 is turned over by 180 degrees, the third developer supplementing port 66 is opened, the second containing cavity 64 is filled with developer, and after the filling is completed, the third developer supplementing port 66 is sealed.

[0039] In some embodiments, the second developer supplementing port 65 and the third developer supplementing port 66 can also be arranged on the first housing 61.

[0040] As Figure 5 and Figure 6As shown, the second housing 62 / second side wall 622 is provided with at least one developer supply port, which is combined with the developer receiving port 112, and the developer in the developer supplement bin 60 can enter the powder bin 13 through the developer supply port and the developer receiving port 112, that is, the powder bin 13 is in communication with the developer supplement bin 60 through the developer supply port, the developer receiving port 11; in some embodiments, the developer supplement bin 60 is provided with a first developer supply port 67 and a second developer supply port 68, which are respectively arranged at the left and right two ends of the second side wall 622, the first developer supply port 67 is used to communicate the first containing cavity 63 and the powder bin 13, and the second developer supply port 68 is used to communicate the second containing cavity 64 and the powder bin 13.

[0041] As shown in FIGS. 1 and 2, the first containing cavity 63 and the second containing cavity 64 are arranged in the left-right direction of the developer supplement bin 60, and the first containing cavity 63 and the second containing cavity 64 are arranged in the front-rear direction of the developer supplement bin 60. Figure 6 and Figure 7 As shown in FIGS. 1 and 2, the first containing cavity 63 and the second containing cavity 64 are arranged in the left-right direction of the developer supplement bin 60, and the first containing cavity 63 and the second containing cavity 64 are arranged in the front-rear direction of the developer supplement bin 60. As shown in FIGS. 1 and 2, the second developer supplement port 65, the first developer supplement port 111 and the first developer supply port 67 are located at the same end of the developer cartridge 100 in the left-right direction, and the third developer supplement port 66 and the second developer supply port 68 are located at the other end of the developer cartridge 100; the opening direction of the first developer supplement port 111 and the opening direction of the first developer supply port 67 intersect, and along the direction from right to left, the second developer supplement port 65, the first developer supplement port 111 and the first developer supply port 67 are projected to the plane M, the straight line L2 passing through the center of the second developer supplement port 65 and the center of the first developer supplement port 111 passes through the first developer supply port 67, and the plane M is perpendicular to the left-right direction; through such arrangement, when filling the developer, the air in the powder bin 13 can flow faster towards the first containing cavity 63 or the second containing cavity 64, and then flow towards the second containing cavity 64 or the first containing cavity 63, and at the same time, the developer can also flow quickly between one of the first containing cavity 63 and the second containing cavity 64 and the powder bin 13, so that the filling efficiency of the developer becomes faster.

[0042] In some embodiments, the developer supplement bin 60 is provided with a second handle 69 for gripping the developer supplement bin 60, similar to the first handle 14, the second handle 69 is also formed with a recess for facilitating the entry of fingers, and is provided with an anti-slip member for preventing the developer supplement bin 60 from falling off when being gripped, and the anti-slip member is arranged as a rib.

[0043] According to the above, after the developer supplement bin 60 is installed to the developing housing 10, the laser port 30 is formed between the developer supplement bin 60 and the developing housing 10, and in some embodiments, the developer supplement bin 60 can also not be provided with the second handle 69, the hand of the user can enter the laser port 30 to hold the developing cartridge 100, so that the volume of the developer supplement bin 60 can be increased, and the user holding the developer supplement bin 60 / developing cartridge 100 is not affected, further, the second side wall 622 of the second housing 62 in the developer supplement bin 60 is inclined, so that the hand of the user is more convenient to enter the laser port, and the user holding the developer supplement bin 60 / developing cartridge 100 is also more simple.

[0044] In some embodiments, the developing cartridge 100 can also cancel the first handle 14, so that the volume of the powder bin 13 can also be increased, and the user holding the developing cartridge 100 is not affected.

[0045] [Advantages]

[0046] Compared with the prior art, the developing cartridge 100 provided by the utility model has the following advantages:

[0047] Firstly, the second developer supplement port 65 and the third developer supplement port 66 are arranged in the developing cartridge 100, the user can fill the developer into the first containing cavity 63 through the second developer supplement port 65, and can fill the developer into the second containing cavity 64 through the third developer supplement port 66, so that the first containing cavity 63 and the second containing cavity 64 can be filled with as much developer as possible;

[0048] In addition, the distances from the inner surface 6221 and the outer surface 6222 of the second side wall 622 to the powder bin 13 gradually decrease from the approximately middle part of the developing cartridge 100 to the left end and the right end, so that the developer in the developer supplement bin 60 can flow towards the powder bin 13;

[0049] Even if the developer supplement bin 60 is arranged in a shape that is small in the middle and large at both sides, the supply cavity can still be filled with as much developer as possible when the second developer supplement port 65 and the third developer supplement port 66 are arranged.

[0050] Secondly, during the filling of the developer, the developer can be filled into the first containing cavity 63 and the second containing cavity 64 through the second developer supplement port 65 and the third developer supplement port 66 respectively, and the developing cartridge 100 does not need to be shaken or rotated multiple times during the filling process, so that the filling method is simple and fast.

[0051] In the third aspect, the developing box 100 is provided with the first developer supplementing opening 111, compared with the developing box without the first developer supplementing opening 111, the developer filled into the powder bin 13 can directly and quickly enter from the first developer supplementing opening 111, so that the internal space of the powder bin 13 can be ensured to be filled with the developer, and meanwhile the filling step of the operator can be simplified.

[0052] In the fourth aspect, when the first accommodating cavity 63 and the second accommodating cavity 64 are communicated with each other, during the filling of the developer, a channel for air circulation between the powder filling device and the first developer supplementing opening 111, the second developer supplementing opening 65 and the third developer supplementing opening 66 of the developing box 100 does not need to be reserved, the powder filling device can be closely attached to the first developer supplementing opening 111, the second developer supplementing opening 65 and the third developer supplementing opening 66, so as to play a role of positioning the developing housing 10, the first housing 61 and the second housing 62, and in addition, the role of preventing the developer from flowing out of the first developer supplementing opening 111, the second developer supplementing opening 65 and the third developer supplementing opening 66 can also be played.

[0053] In the fifth aspect, when the developer supplementing bin 60 and the powder bin 13 are simultaneously filled with the developer, one of the first accommodating cavity 63 and the second accommodating cavity 64 is sealed, the air in the powder bin 13 can flow and gather towards the sealed first accommodating cavity 63 or the second accommodating cavity 64 through at least one of the first developer supplying opening 67 and the second developer supplying opening 68, so that the second accommodating cavity 64 and the first accommodating cavity 63 can be ensured to contain as much developer as possible, and the filling speed of the developer can also be accelerated; when the sealed first accommodating cavity 63 or the second accommodating cavity 64 is unsealed, the air in the first accommodating cavity 63 or the second accommodating cavity 64 can be discharged.

[0054] In the sixth aspect, when the developer supplementing bin 60 and the powder bin 13 are simultaneously filled with the developer, according to the air flow path in the fifth aspect, the filling speed of the powder bin 13 can be greater than the filling speed of the developer supplementing bin 60, and in the same time, the developer supplementing bin 60 and the powder bin 13 can contain as much developer as possible, especially when the volume of the powder bin 13 is greater than the volume of the first accommodating cavity 63 or the second accommodating cavity 64, the setting can accelerate the overall filling speed of the developing box 100.

[0055] In the seventh aspect, the first accommodating cavity 63 and the second accommodating cavity 64 can also not be communicated with each other, at this time, the developing box 100 still has the beneficial effects of the first aspect, the second aspect, the third aspect, the fifth aspect and the sixth aspect.

Claims

1. A developing cartridge detachably mountable to an image forming apparatus, comprising a developing housing and a developing roller rotatably provided in the developing housing, the developing roller rotating about a first rotation axis parallel to a left-right direction, the developing housing including a cover and a main housing combined with each other, the developing roller being provided on one of the cover and the main housing, a powder reservoir for accommodating a developer being formed between the cover and the main housing, the developing roller serving to supply the developer to a photosensitive member disposed opposite to the developing roller; the developing housing being provided with a first developer replenishing port at one of left and right ends, the developer being able to be filled to the powder reservoir through the first developer replenishing port; characterized in that the developing cartridge further comprising a developer replenishing reservoir for replenishing the developer to the powder reservoir, the developer replenishing reservoir being in communication with the powder reservoir, the developer replenishing reservoir including a supply chamber for accommodating the developer, the supply chamber including a first accommodating chamber and a second accommodating chamber arranged in the left-right direction; the developer replenishing reservoir being further provided with a second developer replenishing port and a third developer replenishing port, the developer being able to be replenished to the first accommodating chamber through the second developer replenishing port and to the second accommodating chamber through the third developer replenishing port; the first developer replenishing port, the second developer replenishing port, and the third developer replenishing port all being directly exposed to an outside of the developing cartridge.

2. The process cartridge according to claim 1, wherein, one of the second developer replenishing port and the third developer replenishing port and the first developer replenishing port are located at the same end of the developing cartridge in the left-right direction.

3. The process cartridge of claim 1, wherein, a laser port being formed between the developer replenishing reservoir and the developing housing after the developer replenishing reservoir is mounted to the developing housing, laser light emitted from the image forming apparatus being able to reach a surface of the photosensitive member through the laser port.

4. The process cartridge of claim 1, wherein, the developer replenishing reservoir including a first housing and a second housing combined with each other, the supply chamber being formed between the first housing and the second housing, the second housing including a first side wall, a second side wall, and a third side wall connected in this order, the first side wall and the third side wall being located at left and right ends of the second side wall, the second developer replenishing port being located on the first side wall, the third developer replenishing port being located on the third side wall; an inner surface of the second side wall facing the supply chamber being provided as an inclined surface, the inner surface gradually decreasing in distance to the powder reservoir from a middle position in the left-right direction toward a direction of a left end and a direction of a right end of the developing cartridge.

5. The process cartridge of claim 4 wherein, an outer surface of the second side wall facing the developing housing being provided as an inclined surface, the outer surface gradually decreasing in distance to the powder reservoir from a middle position in the left-right direction toward a direction of a left end and a direction of a right end of the developing cartridge.

6. The process cartridge of claim 4 wherein, the second housing / second side wall being provided with a first developer supply port for communicating the first accommodating chamber with the powder reservoir and a second developer supply port for communicating the second accommodating chamber with the powder reservoir; one of the second developer replenishing port and the third developer replenishing port, the first developer replenishing port, and the first developer supply port being located at the same end of the developing cartridge in the left-right direction.

7. The process cartridge of claim 6 wherein, the opening direction of the first developer replenishing port and the opening direction of the first developer supply port intersecting each other.

8. The process cartridge of claim 6 wherein, One of the second developer replenishing port and the third developer replenishing port, the first developer replenishing port, and the first developer supply port are projected to a plane perpendicular to the right-left direction along a direction from right to left, and a straight line passing through the center of the one of the second developer replenishing port and the third developer replenishing port and the center of the first developer replenishing port passes through the first developer supply port.

9. The process cartridge according to any one of claims 1 to 8, wherein, The first accommodating cavity and the second accommodating cavity are in communication with each other.

10. The process cartridge according to any one of claims 1 to 8, wherein, The first accommodating cavity and the second accommodating cavity are not in communication with each other.

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