Developing box and processing box

Abstract

According to the developing box and the processing box with the developing box, the developing box can be detachably installed on the imaging equipment, the developing box comprises the developing shell and the developing roller rotatably arranged in the developing shell, the developing shell comprises the surface cover and the bottom shell which are combined with each other, and the direction parallel to the rotating axis of the developing roller is the left-right direction. In the left-right direction, one end, provided with a driving force receiving piece for receiving driving force from the imaging equipment, of the developing box is a driving end; a driving gear coaxial with the driving force receiving part is arranged at the driving end of the developing box, and the driving force received by the driving force receiving part is transmitted to the developing roller through the driving gear; one of the bottom shell and the surface cover is provided with a welding surface provided with a welding wire, the welding wire is formed by protruding from the welding surface, and the projection of the welding surface is at least out of the projection range of the driving force receiving piece when observed in the left-right direction; therefore, the possibility of unsoldering of the bonding wire under the action of instant impact force generated by the driving head of the imaging equipment on the driving force receiving piece is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic photographic imaging, in particular to a developing box detachably installed in an electronic photographic imaging device and a processing box comprising the developing box. Background Art

[0002] The developing box can be installed to the imaging device in a detachable manner. The developing box includes a developing shell for accommodating the developer required for imaging by the imaging device. The developing shell includes a bottom shell and a surface cover that are combined with each other. A accommodating cavity for accommodating the developer is formed between the bottom shell and the surface cover. A welding wire is provided on the side of the bottom shell facing the surface cover, and a mating portion for mating with the welding wire is provided on the side of the surface cover facing the bottom shell. During the assembly process of the developing box, the welding wire is accommodated by the mating portion, and then the welding wire is melted by ultrasonic methods or other methods, so that the surface cover and the bottom shell are fixedly combined.

[0003] The developing box also includes a developing roller and a driving force receiving member. The developing roller is rotatably arranged in the developing shell, and the driving force receiving member is used to receive the driving force from the driving head of the imaging device to drive the developing roller to rotate. In the existing developing box, when observed along the axial direction of the developing roller, the projection of the welding surface provided with the welding line falls within the projection range of the driving force receiving member. In the process of receiving the driving force, especially at the moment when the driving force receiving member receives the driving force, the driving head of the imaging device will generate a large instantaneous impact force on the driving force receiving member. In this way, along the axial direction of the developing roller, the welding surface located within the projection range of the driving force receiving member may be desoldered under the action of the impact force, thereby affecting the subsequent normal use of the developing box. Utility Model Content

[0004] The developer cartridge and the processing cartridge having the developer cartridge provided by the present invention can at least solve the above-mentioned technical problems. The specific technical solutions are as follows:

[0005] The developing box can be detachably installed to the imaging device, and includes a developing shell for accommodating the developer required for imaging by the imaging device. The developing shell includes a surface cover and a bottom shell combined with each other. The developing box also includes a developing roller rotatably arranged in the developing shell, and the developing roller is used to supply the developer to the outside of the developing box. The direction parallel to the rotation axis of the developing roller is the left and right direction. The developing box also includes a driving force receiving member for receiving driving force from the imaging device. Along the left and right directions, one end of the driving force receiving member of the developing box is set as the driving end.

[0006] The developing box is provided with a transmission component including at least a driving gear at the driving end, the driving gear is coaxially arranged with the driving force receiving member, and the driving force received by the driving force receiving member is transmitted to the developing roller through the driving gear; one of the bottom shell and the surface cover has a welding surface provided with a welding line, and the welding line protrudes from the welding surface, and when viewed in the left and right directions, the projection of the welding surface falls at least outside the projection range of the driving force receiving member; the welding surface is set to be a plane.

[0007] The direction from the side where the developing roller is not installed to the side where the developing roller is installed is the forward direction, the direction opposite to the forward direction is the backward direction, the left and right directions intersect with the front and back directions, and the direction intersecting with both the left and right directions and the front and back directions is the up and down direction; the welding surface passes through the front and back direction and the left and right directions, and the welding surface is perpendicular to the up and down direction.

[0008] When viewed in the left-right direction, the projection of the welding surface is outside the projection range of the driving gear.

[0009] The developing box includes a powder knife for adjusting the thickness of the developer on the surface of the developing roller. The powder knife includes a knife holder and a blade fixed on the knife holder. The developing box also includes at least one fixing member, which is used to pass through the blade and the knife holder at the same time to fix the powder knife.

[0010] The developing box includes a powder discharge knife for adjusting the thickness of the developer on the surface of the developing roller, the powder discharge knife includes a knife holder and a blade fixed on the knife holder, and the surface cover also includes a supporting portion for supporting the powder discharge knife / knife holder. Along the front-to-back direction, the supporting portion is formed as the front end of the surface cover, and the supporting portion has a first surface intersecting with the up-down direction. When the driving force receiving member receives the driving force, the first surface faces upward in the up-down direction, and the first surface is set to be a plane.

[0011] When the support portion and the face cover are formed separately, a reinforcement member for increasing the strength of the support portion is further provided on the face cover. In the up-down direction, the reinforcement member is located below the support portion.

[0012] The processing box includes a drum box and the above-mentioned developing box. The drum box includes a drum shell and a photosensitive drum rotatably arranged in the drum shell. The developing box can be accommodated by the drum shell. The surface of the photosensitive drum is used to form an electrostatic latent image. The developing roller is used to supply the developer to the surface of the photosensitive drum to develop the electrostatic latent image.

[0013] Compared with the prior art, in the developing box and the processing box having the developing box provided by the present invention, the welding line protrudes from the welding surface toward the bottom shell / surface cover. When viewed in the left and right directions, the projection of the welding surface falls outside the projection range of the driving gear / driving force receiving member. In this way, at the moment when the driving force receiving member receives the driving force, the possibility of the welding line being desoldered under the instantaneous impact force generated by the driving head of the imaging device on the driving force receiving member is reduced.

[0014] In addition, the surface cover or the bottom shell has a welding surface that is arranged to be flat. Such an arrangement makes the process of combining the surface cover and the bottom shell easier and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A and Figure 1B It is a three-dimensional diagram of the developing box involved in the present utility model.

[0016] Figure 2 This is an exploded view of the developing box involved in the utility model.

[0017] Figure 3 The present invention relates to a developing box with a hidden cover. Figure 1A The plan view after cutting along the AA direction.

[0018] Figure 4 It is a three-dimensional diagram of the surface cover of the developing box involved in the present invention.

[0019] Figure 5 It is a schematic diagram of a powder discharging knife of a developing box involved in the present invention.

[0020] Figure 6 This is an exploded view of the surface cover and the powder discharging knife of the developing box involved in the utility model.

[0021] Figure 7 This is a three-dimensional diagram of the developing box involved in the utility model with the powder knife hidden. DETAILED DESCRIPTION

[0022] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0023] [Developer cartridge]

[0024] like Figure 1A and Figure 1B As shown, the developing box 100 includes a developing housing 10 and a developing roller 20 and a powder feeding roller 30 rotatably arranged in the developing housing 10. The developing housing 10 is used to accommodate the developer required for imaging of the imaging device. The powder feeding roller 30 is used to transport the developer to the developing roller 20. The developing roller 20 is used to supply the developer to the surface of the photosensitive drum outside the developing box 100. The developing roller 20 rotates around the first rotation axis L1. When the imaging device forms an image, the developing roller 20 and the photosensitive drum remain in contact.

[0025] In the following, for the convenience of description, the direction parallel to the first rotation axis L1 is defined as the left-right direction, the direction from the side where the developing roller 20 is not installed to the side where the developing roller 20 is installed is defined as the forward direction, the direction opposite to the forward direction is defined as the backward direction, the left-right direction intersects with the front-back direction, and the direction intersecting with both the left-right direction and the front-back direction is defined as the up-down direction, and at least a portion of the developing roller 20 is located in front of the powder feeding roller 30.

[0026] The developing box 100 also includes a power receiving member 40 for receiving power from the imaging device and a driving force receiving member 50 for receiving driving force from the imaging device. The power receiving member 40 and the driving force receiving member 50 are arranged at intervals in the left and right directions. In the left and right directions, the end of the developing box 100 where the power receiving member 40 is provided is a conductive end, and the end where the driving force receiving member 50 is provided is a driving end.

[0027] (Drive end of the developer cartridge)

[0028] like Figure 1B and Figure 2 As shown, the developing box 100 is provided with a driving end cover 60 and a transmission assembly 70 at the driving end. The driving end cover 60 is detachably connected to the developing shell 10. At least a portion of the transmission assembly 70 is covered by the driving end cover 60. The transmission assembly 70 includes at least a driving gear 71, a powder feeding gear 72 and a developing gear 73. The driving gear 71 is connected to the driving force receiving member 40 in the left and right directions. The driving gear 71 engages with the powder feeding gear 72 to transmit the driving force to the powder feeding roller 30, so that the powder feeding roller 30 is driven to rotate. At the same time, the driving gear 71 can also engage with the developing gear 73 to transmit the driving force to the developing gear 73, so that the developing roller 20 is driven to rotate. In some embodiments, the driving gear 71 is coaxially arranged with the driving force receiving member 40, which is conducive to faster transmission of the driving force.

[0029] (Developer housing of developer cartridge)

[0030] like Figure 2 As shown, the developing housing 10 includes a surface cover 11 and a bottom shell 12 that are combined with each other. A developing chamber 16 for accommodating developer is formed between the surface cover 11 and the bottom shell 12. In some embodiments, the surface cover 11 and the bottom shell 12 are arranged in the up and down direction.

[0031] like Figure 2 、 Figure 3 and Figure 4As shown, the bottom shell 12 has a welding surface 121 passing through the front-to-back direction and the left-to-right direction, and the welding surface 121 is perpendicular to the up-down direction. When viewed in the left-to-right direction, the projection of the welding surface 121 is at least outside the projection range of the driving force receiving member 50. Further, when viewed in the left-to-right direction, the projection of the welding surface 121 falls outside the projection range of the driving gear 71; the welding surface 121 is set to a plane; a welding line 13 is also provided on the side of the bottom shell 12 facing the surface cover 11, and the welding line 13 protrudes from the welding surface 121 toward the top / surface cover 11, and a receiving groove 111 is provided on the side of the surface cover 11 facing the bottom shell 12, and the receiving groove 111 is used to receive the welding line 13. When the developing box 100 is assembled, the welding line 13 and the receiving groove 111 cooperate with each other, and the welding line 13 is received in the receiving groove 111, and then the welding line 13 is melted by ultrasonic or other methods to fix the bottom shell 12 and the surface cover 11 together.

[0032] In some embodiments, the welding wire 13 can be interchangeably arranged with the accommodating groove 111, and the purpose of fixing the surface cover 11 and the bottom shell 12 together can also be achieved. At this time, the welding surface 121 is located on the side of the surface cover 11 facing the bottom shell 12, and the welding wire 13 protrudes from the welding surface 121 toward the bottom / bottom shell 12, and the accommodating groove 111 is set on the bottom shell 12.

[0033] like Figure 2 、 Figure 5 and Figure 6 As shown, the developing roller 20 includes a developing roller layer 21 and a developing roller shaft 22. In the left-right direction, the developing roller shaft 22 protrudes from both ends of the developing roller layer 21. The developing box 100 also includes a powder knife 80 for adjusting the thickness of the developer on the surface of the developing roller 20 / developing roller layer 21. The powder knife 80 includes a knife holder 81 and a blade 82 fixed on the knife holder 81. In the left-right direction, the size of the knife holder 81 is larger than the size of the blade 82, and the size of the knife holder 81 and the size of the blade 82 are both larger than the size of the developing roller layer 21 in the left-right direction. The knife holder 81 is installed on the developing housing 10. The developing box 100 also includes at least one fixing member 83, and the fixing member 83 is used to fix the blade 82 and the knife holder 81 at the same time.

[0034] In some embodiments, the fixing member 83 is configured as a screw, and the screw passes through the blade 82 and the knife holder 81 at the same time to fix the powder discharging knife 80.

[0035] like Figure 4 、 Figure 5 and Figure 6As shown, the developer box 100 also includes a seal 14 for preventing the developer from leaking from the powder discharge knife 80. The seal 14 is installed between the powder discharge knife 80 and the developer housing 10. In the front-to-back direction, the seal 14 is located between the surface cover 11 and the knife holder 81. The seal 14 can also play a buffering role to prevent the knife holder 81 from directly contacting the surface cover 11, thereby extending the service life of the powder discharge knife 80. In some embodiments, the seal 14 is configured as a sponge.

[0036] The knife holder 81 includes a first part 811 and a second part 812 that are connected to each other. When the powder discharge knife 80 is installed to the developer box 100 and the developer box 100 is in a state of receiving driving force, in the up and down direction, the first part 811 is located below the second part 812. The first part 811 extends in the up and down direction and the left and right direction, and the second part 812 extends in the left and right direction and the front and back direction. The blade 82 is installed on the first part 811.

[0037] like Figure 2 、 Figure 5 、 Figure 6 and Figure 7 As shown, the face cover 11 also includes a support portion 15 for supporting the powder discharging knife 80 / the knife holder 81. Along the front-to-back direction, the support portion 15 is formed as the front end portion of the face cover 11. The support portion 15 and the face cover 11 can be formed integrally or separately. The support portion 15 has a first surface 151 that intersects with the up and down directions. When the driving force receiving member 50 receives the driving force, in the up and down directions, the first surface 151 faces upward, or in other words, the first surface 151 faces the second portion 812 of the knife holder 81. The first surface 151 is set to a plane, and there is no depression formed on the first surface 151.

[0038] In some embodiments, when the support portion 15 and the surface cover 11 are formed separately, the developer box 100 / the surface cover 11 is further provided with a reinforcing member for increasing the strength of the support portion 15 , and the reinforcing member is located below the support portion 15 in the up and down direction.

[0039] In some embodiments, the first surface 151 is in direct contact with the tool holder 81 / the second portion 812 so that the tool holder 81 is supported.

[0040] [Processing cartridge]

[0041] The developing box provided by the present invention is also suitable for a processing box, which includes a developing box 100 and a drum box that are combined with each other, and the drum box includes a drum shell and a photosensitive drum rotatably arranged in the drum shell. The developing box 100 can be accommodated by the drum shell, and an electrostatic latent image can be formed on the surface of the photosensitive drum. The developer supplied to the surface of the photosensitive drum by the developing roller 20 can develop the electrostatic latent image.

[0042] [Advantages]

[0043] Compared with the prior art, the developing box 100 and the processing box having the developing box 100 have the following advantages:

[0044] In the first aspect, the soldering wire 13 is formed by protruding from the soldering surface 121 towards the bottom shell 12 / face cover 11, and the projection of the soldering surface 121 falls outside the projection range of the driving gear 71 / driving force receiving member 50 when viewed in the left-right direction. Thus, the possibility of the soldering wire 13 being detached under the action of the instantaneous impact force generated by the driving head of the imaging device on the driving force receiving member 50 at the moment when the driving force receiving member 50 receives the driving force is reduced.

[0045] In the second aspect, the face cover 11 or the bottom shell 12 of the developing housing 10 has a soldering surface 121 arranged as a plane. Such an arrangement makes the process of mutual combination of the face cover 11 and the bottom shell 12 easier and more convenient.

[0046] In the third aspect, the developing box 100 further comprises a powder outlet knife 80, the powder outlet knife 80 comprising a knife holder 81 and a blade 82 fixed on the knife holder 81; the developing box 100 further comprises at least one fixing member 83, the fixing member 83 being used to simultaneously pass through the blade 82 and the knife holder 81 to fix the powder outlet knife 80, so that the blade 82 is not easily detached from the knife holder 81.

[0047] In the fourth aspect, the support part 15 of the face cover 11 has a first surface 151 intersecting with the up-down direction, and the first surface 151 is arranged as a plane. Such an arrangement makes the structure of the face cover 11 in the developing housing 10 simple, and the manufacturing cost of the developing box 100 is reduced.

Claims

1. A developer cartridge, removably mounted to an imaging device, comprising a developer housing for accommodating developer required for imaging by the imaging device, the developer housing comprising a top cover and a bottom housing coupled to each other, the developer cartridge further comprising a developer roller rotatably disposed within the developer housing, the developer roller for supplying developer to the exterior of the developer cartridge, the direction parallel to the rotational axis of the developer roller being the left-right direction, the developer cartridge further comprising a driving force receiving member for receiving driving force from the imaging device, the end of the developer cartridge where the driving force receiving member is disposed is the driving end along the left-right direction; It is characterized by: The developing box is provided with a transmission component including at least a driving gear at the driving end, the driving gear is coaxially arranged with the driving force receiving member, and the driving force received by the driving force receiving member is transmitted to the developing roller through the driving gear; one of the bottom shell and the surface cover has a welding surface provided with a welding line, and the welding line protrudes from the welding surface. When viewed in the left and right directions, the projection of the welding surface falls at least outside the projection range of the driving force receiving member.

2. The developing cartridge according to claim 1, wherein The welding surface is configured to be a plane.

3. The developing cartridge according to claim 2, wherein: The direction from the side where the developing roller is not installed to the side where the developing roller is installed is the forward direction, the direction opposite to the forward direction is the backward direction, the left and right directions intersect with the front and back directions, and the direction intersecting with both the left and right directions and the front and back directions is the up and down direction; the welding surface passes through the front and back direction and the left and right directions, and the welding surface is perpendicular to the up and down direction.

4. The developing cartridge according to claim 1, wherein: When viewed in the left-right direction, the projection of the welding surface is outside the projection range of the driving gear.

5. The developing cartridge according to claim 1, wherein The developing box includes a powder knife for adjusting the thickness of the developer on the surface of the developing roller. The powder knife includes a knife holder and a blade fixed on the knife holder. The developing box also includes at least one fixing member, which is used to pass through the blade and the knife holder at the same time to fix the powder knife.

6. The developing cartridge according to claim 1, wherein: The developing box includes a powder discharge knife for adjusting the thickness of the developer on the surface of the developing roller, the powder discharge knife includes a knife holder and a blade fixed on the knife holder, and the surface cover also includes a supporting portion for supporting the powder discharge knife / knife holder. Along the front-to-back direction, the supporting portion is formed as the front end of the surface cover, and the supporting portion has a first surface intersecting with the up-down direction. When the driving force receiving member receives the driving force, the first surface faces upward in the up-down direction, and the first surface is set to be a plane.

7. The developing cartridge according to claim 6, wherein: When the support portion and the face cover are formed separately, a reinforcement member for increasing the strength of the support portion is further provided on the face cover. In the up-down direction, the reinforcement member is located below the support portion.

8. A process cartridge, characterized in that The processing box includes a drum box and a developing box as described in any one of claims 1 to 7, the drum box includes a drum shell and a photosensitive drum rotatably arranged in the drum shell, the developing box can be accommodated by the drum shell, the surface of the photosensitive drum is used to form an electrostatic latent image, and the developing roller is used to supply developer to the surface of the photosensitive drum to develop the electrostatic latent image.

Images