CN116243572A - Developing unit - Google Patents
Developing unit Download PDFInfo
- Publication number
- CN116243572A CN116243572A CN202211693733.9A CN202211693733A CN116243572A CN 116243572 A CN116243572 A CN 116243572A CN 202211693733 A CN202211693733 A CN 202211693733A CN 116243572 A CN116243572 A CN 116243572A
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- CN
- China
- Prior art keywords
- developing unit
- frame
- developing roller
- developing
- photosensitive drum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 13
- 238000000926 separation method Methods 0.000 description 11
- 230000003014 reinforcing effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
- G03G15/0813—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by means in the developing zone having an interaction with the image carrying member, e.g. distance holders
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/1642—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements for connecting the different parts of the apparatus
- G03G21/1647—Mechanical connection means
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/1661—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus
- G03G21/1676—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus for the developer unit
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
The invention discloses a developing unit, comprising: a developing roller; a frame for supporting the developing roller; a movable part; the movable part comprises a first force bearing part and a second force bearing part, a mounting column is arranged on the frame, the movable part is mounted on the mounting column, the movable part further comprises a tension spring positioned between the movable part and the frame, and one end of the tension spring is connected with the other end of the frame and is connected with the movable part.
Description
Technical Field
The present invention relates to a developing cartridge having a push-up structure and a process cartridge including the developing cartridge, the developing cartridge or the process cartridge being detachably mounted in an electrophotographic image forming apparatus.
Here, the electrophotographic image forming apparatus is an apparatus that forms an image on a recording material using an electrophotographic image forming method. For example, it includes electrophotographic copiers, electrophotographic printers (LED printers, laser printers, etc.), electrophotographic facsimile machines, electrophotographic word processors, etc.
The developing cartridge is a unit that contains a developer carrying member for developing an electrostatic latent image formed on an image carrying member (e.g., an electrophotographic photosensitive member), which is integrally incorporated into a cartridge detachably mounted on a main assembly of an electrophotographic image forming apparatus.
The process cartridge is a unit that includes an image bearing member (e.g., an electrophotographic photosensitive member), a developer bearing member for developing an electrostatic latent image formed on the image bearing member, and a developer accommodating portion accommodating a developer, which are integrally incorporated into a cartridge detachably mounted on a main assembly of the electrophotographic image forming apparatus.
Background
In a conventional image forming apparatus, a process device capable of acting on an electrophotographic photosensitive drum and the electrophotographic photosensitive drum are integrated into a cartridge. A process cartridge type in which a cartridge is detachably mounted to a main assembly of an electrophotographic image forming apparatus is applied. According to this process cartridge type, the maintenance operation of the apparatus is performed by the user without relying on service personnel, thereby remarkably improving operability. Then, this process cartridge type is widely used in electrophotographic image forming apparatuses.
Light corresponding to image information of a laser, an LED, or a lamp is projected onto an electrophotographic photosensitive drum in an electrophotographic image forming apparatus. Thereby, an electrostatic latent image is formed on the photosensitive drum. The electrostatic latent image is developed by a developing device. The developed image formed on the photosensitive drum is transferred onto a recording material. Thereby, an image is formed on the recording material.
In the conventional process cartridge in the image forming process, a developing roller in a developing device cannot be spaced apart from a photosensitive drum after printing is completed, which causes the service lives of the developing roller and the photosensitive drum to be reduced, and therefore, in order to increase the service lives of the developing roller and the photosensitive drum, taiwan patent publication No. TW201621483a discloses a developing cartridge in which the developing roller can be separated from the photosensitive drum after printing is completed, while the developing cartridge has a push-push structure including a movable portion that can receive an external force and an elastic member provided between a developing cartridge frame and the movable portion, and the developing roller is brought into contact with the photosensitive drum with a certain pressure by an elastic force after being deformed by the elastic member to complete an image forming action.
Disclosure of Invention
The present invention further develops the prior art structure described above.
Accordingly, it is a primary object of the present invention to provide a developing cartridge and a process cartridge capable of increasing the life of a developing roller, a photosensitive drum, and the life of a developer.
In order to achieve the technical purpose, the invention is realized by the following technical scheme:
a developing unit comprising:
a developing roller;
a frame for supporting the developing roller;
a movable part;
the movable part comprises a first force bearing part and a second force bearing part, a mounting column is arranged on the frame, the movable part is mounted on the mounting column, the movable part further comprises a tension spring positioned between the movable part and the frame, and one end of the tension spring is connected with the other end of the frame and is connected with the movable part.
Preferably, the first force receiving portion and the second force receiving portion are provided on the same movable portion.
Preferably, the movable portion is movably mounted on the mounting post and rotatable about the mounting post.
Preferably, the developing unit may be installed in an image forming apparatus having a photosensitive drum, and the elastic force of the tension spring causes the developing roller to contact the photosensitive drum with a certain pressure when the developing unit is in the urging position.
After the scheme is adopted, the developing unit provided by the invention separates the developing roller arranged in the developing unit from the photosensitive drum arranged in the imaging equipment after printing is finished, and the developing roller and the photosensitive drum are forced to be in pressure contact by utilizing the elastic force provided by the tension spring, so that the service lives of the developing roller and the photosensitive drum are greatly prolonged, and meanwhile, the stable contact of the developing roller and the photosensitive drum is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a photosensitive unit mated with a developing unit of the present invention;
fig. 2 is a schematic exploded view of a developing unit in a first embodiment of the present invention;
fig. 3 is a schematic view of the structure of a developing unit in the first embodiment of the present invention;
fig. 4 is a partial schematic structural view of a pushing portion of the developing unit in the first embodiment of the present invention;
fig. 5 is a schematic view of the structure of a control rail in an image forming apparatus to which the developing unit of the present invention is applied;
FIG. 6 is a schematic structural view of a modified embodiment of the novel first embodiment of the present invention;
fig. 7 is a partial schematic structural view of a pushing portion of the developing unit in the second embodiment of the present invention;
fig. 8 is a schematic view showing an exploded structure of a pushing portion of a developing unit in a third embodiment of the present invention;
fig. 9 is a schematic view showing an exploded structure of a pushing portion of a developing unit in a third embodiment of the present invention;
fig. 10 is a partial schematic structural view of a pushing portion of a developing unit in a fourth embodiment of the present invention.
Detailed Description
In describing embodiments of the present invention in detail, the drawings showing the structure of the device are not to scale locally for ease of illustration, and the schematic drawings are merely exemplary and should not limit the scope of the invention. It should be noted that the drawings are in a very simplified form and are not to scale precisely, but merely for the purpose of facilitating and clearly aiding in the description of the embodiments of the invention.
Example 1
As shown in fig. 1, the photosensitive unit 50 has a photosensitive drum 51, a charging roller 52 that charges the photosensitive drum 51, a frame 53 that supports the photosensitive drum 51, and a handle 54 is provided on the frame 53.
As shown in fig. 2 and 3, the developing unit 1 includes a frame 2 having a developer accommodating portion, a developing roller 3 supported on the frame 2, a power receiving portion 4 receiving a driving force of a driving head (not shown in the drawings) in the image forming apparatus and driving the developing roller 3 to rotate, an elastic member mounting portion 2a provided on the frame 2, an elastic member 6 mounted on the elastic member mounting portion 2a, and a protective cover 5 for protecting the power receiving portion 4 and the elastic member 6. When both the developing unit 1 and the photosensitive unit 50 are mounted in the image forming apparatus, the developing unit 1 is engageable with a force applying unit in the image forming apparatus and movable inside the image forming apparatus.
For convenience of description, a state position where the developing roller 3 in the developing unit 1 is just in contact with the photosensitive drum 51 in the photosensitive unit 50 but no pressure is generated therebetween is referred to as a contact position; the state position where the developing roller 3 is spaced from the photosensitive drum 51 is referred to as a spaced position; the position of the state of pressure contact between the developing roller 3 and the photosensitive drum 51 is referred to as a urging position. The power receiving portion 4 is engaged with a driving head in the image forming apparatus when the developing unit 1 is in the urging position, and can receive a driving force from the image forming apparatus. The developing unit 1 is movable among a contact position, a separation position, and a pushing position. The direction in which the developing roller 3 in the developing unit 1 rotates toward the photosensitive drum 51 near the photosensitive unit 50 as viewed from the side of the power receiving portion 4 in the rotation axis direction of the developing roller 3 is referred to as a forward direction M, and the direction in which the developing roller 3 rotates away from the photosensitive drum 51 is referred to as a backward direction N. The moving direction of the main body rail in the force applying unit in the image forming apparatus in fig. 5 is referred to as a left-right direction.
As shown in fig. 4, the mounting portion 2a on the frame 2 includes a first elastic member stopper portion 2a1 and a second elastic member stopper portion 2a2, the elastic member 6 is specifically configured as an elastic metal sheet in the present embodiment, and a mounted portion 6e of the elastic member 6 is caught in a gap formed between the first elastic member stopper portion 2a1 and the second elastic member stopper portion 2a 2. The elastic member 6 includes a deformation portion 6a, a first force receiving portion 6b, and a second force receiving portion 6d, and the first force receiving portion 6b and the second force receiving portion 6d are connected by a transition portion 6 c.
As shown in fig. 5, the force applying unit 60 in the image forming apparatus includes a cam 61, a body rail 62, and a force applying member 63. The imaging device drives the cam 61 to rotate in the R direction, and the cam 61 drives the main body rail 62 to reciprocate in the left-right direction. The force applying member 63 provided on the main body rail 62 has a first force applying portion 63a and a second force applying portion 63b.
The developing unit 1 is initially mounted in the image forming apparatus in a spaced-apart position, and when the main body rail 62 is moved in the L direction from left to right by the cam 61, the first force applying portion 63a is brought into contact with the first force receiving portion 6b on the elastic member 6 and further presses the elastic member 6 so that the deformed portion 6a is deformed, while the developing unit 1 is rotated in the advancing direction M by the force applying unit 60, and is moved from the spaced-apart position to the contact position and further moved to the pressing position, specifically, the first elastic member limiting portion 2a1 and the second elastic member limiting portion 2a2 on the frame 2 limit the mounted portion 6e of the elastic member 6, the deformed portion 6a between the mounted portion 6e and the first force receiving portion 6b is deformed, and the elastic force generated by the deformed portion 6a brings the developing roller 3 into contact with the photosensitive drum 51 with a certain pressure. When printing is completed, the main body rail 62 is moved in the H direction from right to left by the driving of the cam 61, and the second force applying portion 63b and the second force receiving portion 6d cooperate to drive the developing unit 1 to rotate in the retreating direction N from the urging position to the spaced position. The elastic member 6 may be made of a metal material or a resin material such as silicone rubber, etc., as long as the elastic force provided allows the developing roller to contact the photosensitive drum with a certain pressure.
As shown in fig. 6, in the present embodiment, in order to further increase the strength at the elastic member 6, a reinforcing block 7 is provided adjacent to the elastic member 6, the reinforcing block 7 is movably mounted on the frame 2, a specific reinforcing block 7 is rotatably mounted on the frame 2, such arrangement not only can increase the strength at the elastic member 6, but also can simplify the structure of the elastic member 6, for example, a second force receiving portion 6d may be provided in the reinforcing block 7, and when the elastic member 6 is pressed by the first force applying portion 63a to be elastically deformed, the reinforcing block 7 is moved due to the deformation of the elastic member 6, the elastic force of the elastic member 6 still allows the developing unit 1 to be in the urging position, and in order to prevent the excessive rotation of the reinforcing block 7, the blocking portion 2a3 is provided on the frame 2 for restricting the rotation range of the reinforcing block 7. When the main body rail 62 moves the developing unit 1 from the urging position to the spaced position, the second force applying portion 63b cooperates with the reinforcing block 7 so that the developing unit 1 moves from the urging position to the spaced position. The arrangement of the reinforcing block 7 can effectively prevent the problem that the elastic piece 6 fails due to excessive deformation of the elastic piece 6.
In this embodiment, the elastic member 6 may be a torsion spring, which is mounted on the frame 2, and has a free end fixed to the frame 2, and a first force receiving portion provided at the other free end thereof for receiving the force of the first force applying portion 63, so that the technical effect of this embodiment can be achieved by using elastic deformation of the torsion spring.
Example two
In this embodiment, the same names as those of the above embodiments are used for the constituent elements having the same functions and actions as those of the above embodiments, and the description thereof will be omitted.
The structure of the present embodiment is described in detail below with reference to the drawings.
As shown in fig. 7, in the present embodiment, a magnetic body mounting portion 2b2 is provided on the frame 2, a first magnetic body 8 is mounted on the magnetic body mounting portion 2b2, a movable portion 601 is movably mounted on the frame 2, specifically, a force receiving member mounting portion 2b1 is provided on the frame 2, the movable portion 601 rotates around the force receiving member mounting portion 2b1, a second magnetic member 9 is mounted on the movable portion 601, and a first force receiving portion 601a and a second force receiving portion 601b are provided on the movable portion 601. The first force applying portion 63a and the second force applying portion 63b are engaged with the first force receiving portion 601a and the second force receiving portion 601b, respectively, so that the movable portion 601 is rotatable between the 1 st position and the 2 nd position, the second magnetic body 9 moves toward the first magnetic body 8 when the movable portion 601 rotates from the 1 st position to the 2 nd position, and the second magnetic body 9 moves away from the first magnetic body 8 when the movable portion 601 rotates from the 2 nd position to the 1 st position. The first magnetic body 8 and the second magnetic body 9 are arranged in such a manner that the repulsive force between the first magnetic body 8 and the second magnetic body 9 is larger than the repulsive force between the first magnetic body 8 and the second magnetic body 9 when the movable portion 601 is in the 1 st position when the developing unit is in the forced pushing position, i.e., when the movable portion 601 is in the 2 nd position. One ends of the same polarity between the first magnetic body 8 and the second magnetic body 9 are opposed, and the developing roller is brought into contact with the photosensitive drum with a certain pressure by the magnetic repulsive force of the same polarity between the first magnetic body 8 and the second magnetic body 9. The distance between the second magnetic body 9 and the axis of the developing roller is longer than the distance between the first magnetic body 8 and the axis of the developing roller as seen in the axial direction of the developing roller, and thus the second magnetic body 9 is also brought close to the developing roller while being brought close to the first magnetic body 8, so that the developing roller can contact the photosensitive drum with a certain pressure. In order to reduce the force applied to the first force receiving portion 601a by the first force applying portion 63a, a supported portion which is rotatable by the frame 2 is provided on the movable portion 601, and a distance between the force receiving portion and the supported portion is set longer than a distance between the second magnetic body and the supported portion as seen in the axial direction of the developing roller, so that a moment of the first force applying portion 63a to the movable portion 601 can be reduced.
Example III
In this embodiment, the same names as those of the above embodiments are used for the constituent elements having the same functions and actions as those of the above embodiments, and the description thereof will be omitted.
The structure of the present embodiment is described in detail below with reference to the drawings.
As shown in fig. 8 and 9, in the present embodiment, a first force receiving portion 602a is provided on a movable portion 602, a second force receiving portion 603a is provided on a separating portion 603, the movable portion 602 and the separating portion 603 are provided separately, a mounting post 2c1 is provided on a frame 2, the movable portion 602 and the separating portion 603 are coaxially mounted on the mounting post 2c1, and the movable portion 602 and the separating portion 603 are configured to be rotatable with respect to each other. The frame 2 is further provided with a first elastic member connecting portion 2c2, the movable portion 602 is provided with a second elastic member connecting portion 602b, one end of the elastic member 10 is connected to the first elastic member connecting portion 2c2, the other end of the elastic member is connected to the second elastic member connecting portion 602b, and the movable portion 602 can rotate under the elastic force of the elastic member 10 and is limited by a limiting portion 2c3 provided on the frame 2 to stop at the limiting portion 2c 3. Since the movable portion 602 is mounted coaxially with the separating portion 603, the movable portion 602 is disposed further inside the frame 2 than the separating portion 603, and the problem of excessive rotational resistance of the separating portion 603 due to the pressing of the separating portion 603 by the elastic member 10 connecting the movable portion 602 and the frame 2 can be prevented. The cover 501 is provided with a first catch 501a and a second catch 501b on a side facing the frame 2, the first catch 501a and the second catch 501b being for restricting a rotation range of the separating portion 603, the first catch 501a being provided to prevent the separating portion 603 from rotating too much toward the power receiving portion 4 to engage with the second force applying portion 63b, the second catch 501b being provided to drive the developing unit to rotate by being blocked by the second catch 501b when the second force applying portion 63b pulls the separating portion 603 to rotate. When the developing unit is in the forced pushing position, the first force applying portion 63a pushes the movable portion 602 to rotate against the elastic force of the elastic member 10, the developing unit makes the developing roller contact the photosensitive drum with a certain pressure under the elastic force of the elastic member 10, and when printing is completed, the second force applying portion 63b pulls the second force receiving portion 603a and makes the separating portion 603 rotate and finally drives the developing unit to be in the separating position where the developing roller is separated from the photosensitive drum, and the second force applying portion 63b is always not in contact with the movable portion 60 in the process of separating the developing roller from the photosensitive drum. The separation portion 603 and the movable portion 602 are at least partially overlapped to more compactly arrange the separation portion 603 and the movable portion 602 as seen in the rotation axis direction of the developing roller 3. In order to prevent the separation portion 603 and the movable portion 602 from being separated from the mounting post 2c1, the cover 501 covers at least a portion of the movable portion 602 or the separation portion 603 as viewed in the rotation axis direction of the developing roller 3.
In this embodiment, the elastic member 10 preferably adopts a tension spring structure, alternatively may adopt other structures such as a torsion spring of a compression spring, and the elastic force of the elastic members such as the tension spring, the compression spring and the torsion spring can be utilized to make the developing roller contact with the photosensitive drum with a certain pressure to form an image well, so that the movable portion 602 and the separating portion 603 are coaxially mounted on the mounting post 2c1 as a preferred scheme, so that the structure is more compact and the volume of the developing unit is reduced, but the movable portion 602 and the separating portion 603 are mounted on different mounting posts of the frame 2, so that the technical effect of this embodiment can be achieved. The separation part 603 is configured to be freely rotatable, so that the separation part 603 and the second force applying part 63b can be more flexibly engaged and not easily disengaged, and the separation part 603 can be configured to be immovable, particularly, the separation part 603 is limited by the first clamping position 501a and the second clamping position 501b and cannot move, or the separation part 603 and the frame 2 are integrally formed, so that the separation part 603 is fixed on the frame, so that the technical effect of separating the developing roller and the photosensitive drum can be achieved.
As shown in fig. 10, as a modified embodiment of the present embodiment, a first force receiving portion 604a and a second force receiving portion 604b are provided on the same movable portion 604, the movable portion 604 is rotatably mounted on a mounting post 2d on the frame 2, one end of a tension spring 11 is connected to the frame 2, the other end is connected to the movable portion 604, and when the developing unit is in the forced pushing position, the developing roller is brought into contact with the photosensitive drum with a certain pressure by the elastic force of the tension spring 11. The volume of the developing unit can be further made small.
In the above embodiments of the present invention, the movable portion is preferably moved in the rotation direction, but it will be understood by those skilled in the art that the movable portion does not only rely on the rotation movement to deform the elastic member to achieve the technical effect of forcing the developing roller to contact the photosensitive drum with a certain pressure, but the movable portion also can slide to deform the elastic member to achieve the technical effect of forcing the developing roller to contact the photosensitive drum with a certain pressure. In the above embodiments, it will be understood by those skilled in the art that the frame should contain a protective cover, and the movable part, the elastic member, the separating part, and the like may be mounted on any member of the frame containing the protective cover.
In this embodiment, the developing unit and the photosensitive unit are preferably separately disposed, alternatively, the developing unit and the photosensitive unit may be formed as an integrated process cartridge, and the technical effects of the embodiments of the present invention may be achieved by rotating the developing unit in the process cartridge around the photosensitive unit.
While the invention has been described with reference to specific embodiments, it will be apparent to those skilled in the art that various modifications can be made without departing from the scope of the invention.
The developing unit provided by the invention further develops the prior art, has a simple structure and low cost, enables the developing roller in the developing unit and the photosensitive drum of the photosensitive unit to be separated from each other after printing is finished, greatly prolongs the service life of the developing roller and the photosensitive drum, and can separate the developing roller from the photosensitive drum immediately after printing, so that the deterioration problem caused by long-time extrusion of the developing roller and the photosensitive drum can not occur to the developer, and the consumption of the developer is further reduced.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. A developing unit comprising:
a developing roller;
a frame for supporting the developing roller;
a movable part;
the movable part comprises a first force bearing part and a second force bearing part, a mounting column is arranged on the frame, the movable part is mounted on the mounting column, the movable part further comprises a tension spring positioned between the movable part and the frame, and one end of the tension spring is connected with the other end of the frame and is connected with the movable part.
2. A developing unit according to claim 1, wherein said first force receiving portion and said second force receiving portion are provided on the same movable portion.
3. The developing unit according to claim 1, wherein the movable portion is movably mounted on the mounting post and rotatable about the mounting post.
4. The developing unit according to claim 1, wherein the developing unit is mountable in an image forming apparatus having a photosensitive drum, and the elastic force of the tension spring causes the developing roller to contact the photosensitive drum with a certain pressure when the developing unit is in a urging position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211693733.9A CN116243572A (en) | 2016-12-24 | 2016-12-24 | Developing unit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611210858.6A CN108241269B (en) | 2016-12-24 | 2016-12-24 | Developing unit and process cartridge including the same |
| CN202211693733.9A CN116243572A (en) | 2016-12-24 | 2016-12-24 | Developing unit |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611210858.6A Division CN108241269B (en) | 2016-12-24 | 2016-12-24 | Developing unit and process cartridge including the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116243572A true CN116243572A (en) | 2023-06-09 |
Family
ID=62704587
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211693733.9A Pending CN116243572A (en) | 2016-12-24 | 2016-12-24 | Developing unit |
| CN201611210858.6A Active CN108241269B (en) | 2016-12-24 | 2016-12-24 | Developing unit and process cartridge including the same |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611210858.6A Active CN108241269B (en) | 2016-12-24 | 2016-12-24 | Developing unit and process cartridge including the same |
Country Status (1)
| Country | Link |
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| CN (2) | CN116243572A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211653402U (en) * | 2019-01-18 | 2020-10-09 | 江西亿铂电子科技有限公司 | Processing box |
| EP3738002A4 (en) * | 2019-03-26 | 2021-08-04 | Brother Kogyo Kabushiki Kaisha | Developing cartridge |
| CN109884867A (en) * | 2019-03-31 | 2019-06-14 | 珠海市拓佳科技有限公司 | Handle box |
| CN112147870B (en) * | 2019-06-27 | 2024-08-16 | 江西亿铂电子科技有限公司 | Toner cartridge |
| CN114488739A (en) * | 2020-11-12 | 2022-05-13 | 纳思达股份有限公司 | Processing box |
| CN220855448U (en) * | 2022-05-26 | 2024-04-26 | 珠海纳思达信息技术有限公司 | Developing box |
| CN221125091U (en) * | 2022-11-25 | 2024-06-11 | 江西亿铂电子科技有限公司 | Developing box |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009086694A (en) * | 2006-01-11 | 2009-04-23 | Canon Inc | Process cartridge and electrophotographic image forming apparatus |
| CN104035311A (en) * | 2014-06-14 | 2014-09-10 | 江西镭博钛电子科技有限公司 | Processing cartridge |
| TW201621483A (en) * | 2014-11-28 | 2016-06-16 | Canon Kk | Cartridge, member configuring cartridge, and image forming device |
| CN205353578U (en) * | 2015-12-26 | 2016-06-29 | 江西亿铂电子科技有限公司 | Developing box |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Also Published As
| Publication number | Publication date |
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| CN108241269B (en) | 2024-05-14 |
| CN108241269A (en) | 2018-07-03 |
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