CN218497344U - Sealing member and process cartridge - Google Patents
Sealing member and process cartridge Download PDFInfo
- Publication number
- CN218497344U CN218497344U CN202222453011.8U CN202222453011U CN218497344U CN 218497344 U CN218497344 U CN 218497344U CN 202222453011 U CN202222453011 U CN 202222453011U CN 218497344 U CN218497344 U CN 218497344U
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- sealing
- casing
- developer
- discharge port
- friction
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Abstract
The utility model relates to a sealing element and a processing box with the sealing element, wherein, the processing box comprises a shell, a developing element, an adjusting element fixedly arranged on the shell and a friction element positioned at the longitudinal end of the shell, and the shell is provided with a developer discharging port; the adjusting piece is abutted against the outer surface of the developing piece, and the longitudinal tail end of the developing piece is contacted with the friction piece; a sealing member and a friction member are provided along a periphery of the developer discharge port; the sealing member includes a main body portion extending in a longitudinal direction, a covering portion and a side portion, at least one of the covering portion and the side portion being integrally formed with the main body portion; a first gap facing the regulating member is formed between the main body part and the friction member, and a second gap is formed at the intersection of one side of the sealing member facing the developer discharge port and one side of the friction member facing the developer discharge port; the covering portion is used for sealing the first gap, and the side portion is used for sealing the second gap, so that the gaps between the sealing member and the friction member can be sealed by the sealing portion, and the sealing performance of the processing box is effectively improved.
Description
Technical Field
The present invention relates to an electrophotographic image forming apparatus, and more particularly to a process cartridge detachably mountable to an electrophotographic image forming apparatus and a sealing member provided in the process cartridge.
Background
A process cartridge is a consumable used for an image forming apparatus such as a laser printer, a copying machine, etc., in which a developer required for image formation is stored, and the developer is conveyed to a photosensitive member having an electrostatic latent image formed on the surface thereof through a rotatable developing member, whereby the electrostatic latent image is developed.
Generally, the developer is flowable fine solid particles, and after the developer is injected into the developer storage chamber, it is necessary to ensure that the developer is not leaked regardless of the assembled state, the transported state, the stored state, or the used state of the process cartridge. For this reason, there has been a method of mounting elastic sealing members at respective portions of the process cartridge, however, there are always large or small gaps at adjacent positions of the respective sealing members, causing leakage of the developer from the gaps, and therefore, there is room for further improvement in the structure for sealing the developer in the conventional process cartridge.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sealing member and have processing box of this sealing member, this sealing member has following structure to effectively prevent that the developer from being leaked.
A sealing member for mounting in a process cartridge including a casing accommodating a developer, a developing member rotatably mounted in the casing, an adjusting member fixedly mounted in the casing, and a friction member at a longitudinal end of the casing, the casing having a developer discharge port for discharging the developer toward the developing member; the adjusting piece is abutted against the outer surface of the developing piece, and the longitudinal tail end of the developing piece is contacted with the friction piece; a sealing member and a friction member are provided along a periphery of the developer discharge port; the sealing member includes a main body portion extending in a longitudinal direction, a covering portion and a side portion, at least one of the covering portion and the side portion being integrally formed with the main body portion; a first gap facing the regulating member is formed between the main body part and the friction member, and a second gap is formed at the intersection of one side of the sealing member facing the developer discharge port and one side of the friction member facing the developer discharge port; the covering part is used for sealing the first gap, the side part is used for sealing the second gap, and the gaps between the sealing element and the friction piece can be sealed by the sealing part, so that the sealing performance of the processing box is effectively improved.
Specifically, when the seal member is mounted, the covering portion covers a part of the friction member, and at least a part of the side portion reaches above the second slit or reaches a position opposite to the second slit; alternatively, the covering portion covers a portion of the friction member, and at least a portion of the side portion is closer to the developer discharge port than the second slit.
In other embodiments, a part of the main body part close to the side part is cut off to form a positioning part, and the positioning part can play a role in positioning the installation of the sealing element and ensure that the sealing element is installed to a preset position.
The utility model discloses a processing box that uses, including the casing that holds the developer, the developing part that rotatably installs in the casing, the adjusting part that fixedly installs in the casing and the friction member that is located the longitudinal end of casing, the casing has the developer discharge port to the developing part discharge developer; the adjusting piece is abutted against the outer surface of the developing piece, and the longitudinal tail end of the developing piece is contacted with the friction piece; the process cartridge further includes a seal member extending in the longitudinal direction, the seal member and the friction member being disposed along a periphery of the developer discharge port; the sealing member includes a main body portion extending in a longitudinal direction, a covering portion and a side portion, at least one of the covering portion and the side portion being integrally formed with the main body portion; a first gap facing the regulating member is formed between the main body portion and the friction member, and a second gap is formed at an intersection of a side of the sealing member facing the developer discharge port and a side of the friction member facing the developer discharge port; the cover part is used for sealing the first gap, and the side part is used for sealing the second gap; similarly, the gaps between the sealing element and the friction element can be sealed by the sealing part, and the sealing performance of the processing box can be effectively improved.
In some embodiments, the seal is mounted to a first mounting portion of the housing and the friction element is mounted to a second mounting portion of the housing, the housing further having a support portion for supporting the second mounting portion, the side portion further opposing the support portion or beyond the intersection of the friction element and the second mounting portion.
Drawings
Fig. 1 is a perspective view of a conventional process cartridge.
Fig. 2 is a perspective view of a part of a conventional process cartridge.
Fig. 3 is an exploded view of a part of the components of the conventional process cartridge.
Fig. 4A and 4B are schematic views of the state of the relative position between the seal member and the friction member in the conventional process cartridge.
Fig. 5 is a perspective view of a sealing member according to an embodiment of the present invention.
Fig. 6A is a perspective view of the sealing member according to the first embodiment of the present invention after being mounted to the process cartridge housing.
Fig. 6B is a cross-sectional view taken along the AA direction in fig. 6A.
Fig. 7 is a perspective view of the sealing member according to the second embodiment of the present invention after being mounted to the process cartridge case.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[ integral Structure of Process Cartridge ]
Fig. 1 is a perspective view of a conventional process cartridge; fig. 2 is a perspective view of a part of a conventional process cartridge; FIG. 3 is an exploded view of a part of the components of the conventional process cartridge; fig. 4A and 4B are schematic views of the state of the relative position between the seal member and the friction member in the conventional process cartridge.
The present processing box is a container capable of accommodating a developer, the processing box can be an integral structure with a developing part and a photosensitive part at the same time, and can also be a split structure with only the developing part, the utility model relates to a processing box is the same as the present processing box structure, and what the difference is the sealing member structure described below, therefore, the utility model relates to a sealing member is also suitable for the present processing box.
Fig. 1 shows a perspective view of an integrated process cartridge C including a developing unit 200 and a photosensitive unit 100 combined with each other, wherein the photosensitive unit 100 includes a photosensitive housing 11 and a photosensitive member 14 rotatably mounted in the photosensitive housing 11, the developing unit 200 includes a developing housing 21 and a developing member 24 rotatably mounted in the developing housing 21, the developing member 24 and the photosensitive member 14 are close to each other, unused developer (new developer) is stored in the developing housing 21, and the developing member 24 is used to convey the new developer toward the surface of the photosensitive member 14.
When the process cartridge C is a split structure, the photosensitive unit 100 is omitted, and in this case, the developing unit 200 is the process cartridge C, the developing housing 21 is a process cartridge housing (hereinafter referred to as "housing"), as shown in fig. 2, the developing unit 200 further includes an adjusting member 22 fixedly installed in the housing 21, and the adjusting member 22 abuts against the surface of the developing member 24 for adjusting the thickness of the developer layer on the surface of the developing member.
As shown in fig. 3, the housing 21 is elongated, and the lengthwise direction thereof is referred to as the longitudinal direction, and as shown in the drawing, the housing 21 includes a developer storage portion 210, a developer discharge port 214, a first mount portion 213 extending in the longitudinal direction, and a second mount portion 211 extending in a direction intersecting the longitudinal direction, the developer discharge port 214 being for discharging the developer stored in the developer storage portion 210 toward the developing member 22, and the first mount portion 213 and the second mount portion 211 being provided along the periphery of the developer discharge port 214.
Further, the process cartridge C further includes a sealing member 23 mounted on the first mounting portion 213 and a friction member 25 mounted on the second mounting portion 211, the sealing member 23 being provided in one, the friction member 25 being provided in the same two, so that the sealing member 23 and the friction member 25 are both disposed adjacent to the developer discharge port 214, wherein the sealing member 2 is used for sealing the developer discharge port 214 in the longitudinal direction of the casing 21, and the friction member 25 is used for sealing the developer discharge port 214 in the direction intersecting the longitudinal direction, that is, the sealing member 23 and the friction member 25 are also disposed along the periphery of the developer discharge port 214.
The sealing member 23 is preferably made of sponge, and by utilizing the characteristics of elasticity and porous structure of sponge, the gap between the regulating member 22 and the casing 21 can be effectively sealed, and at the same time, the sponge can adsorb part of the developer to further prevent the developer from leaking from between the regulating member 22 and the casing 21.
The friction member 25 is made of a wear-resistant elastic member, preferably felt, so that the friction member 25 performs sealing by its own elasticity, and at the same time, the friction member 25 ensures that it is not worn during a long-term high-speed rotation of the developing member 24 by its own wear resistance; more preferably, the elasticity of the friction member 25 is smaller than that of the sealing member 23.
When the process cartridge C is completely assembled, the regulating member 22 is fixed to the casing 21, the developing member 24 is rotatably mounted to the casing 21, the longitudinal end of the developing member 24 is in contact with the friction member 25, and at the same time, the sealing member 23 is sandwiched by the casing 21 and the regulating member 22 and elastically deformed, and thus, both the longitudinal direction of the developer discharge port 214 and the direction intersecting the longitudinal direction are sealed.
As shown in fig. 4A and 4B, the seal member 23 partially overlaps the friction member 25 when viewed in the longitudinal direction, and a first slit S1 facing the regulating member 22 and a second slit S2 facing the developer discharge port 214 are formed between the seal member 23 and the friction member 25 in a direction perpendicular to the longitudinal direction, respectively, wherein the first slit S1 faces the regulating member 22, and the second slit S2 is located at an intersection of a side of the seal member 23 facing the developer discharge port 214 and a side of the friction member 25 facing the developer discharge port 214.
[ Structure of seal ]
Example one
Fig. 5 is a perspective view of a sealing member according to an embodiment of the present invention; fig. 6A is a perspective view of the sealing member according to the first embodiment of the present invention after being mounted to the process cartridge housing; fig. 6B is a cross-sectional view taken along the direction AA in fig. 6A.
As shown in fig. 3, the housing 21 is provided with a support portion 212 for supporting the second mounting portion 211, and an intersection line of the friction member 25 and the second mounting portion 211 is L when viewed in the longitudinal direction. As shown in fig. 5, the sealing member 23 includes a main body 231 extending in the longitudinal direction and a sealing portion 232 at a longitudinal end of the main body 231, the sealing portion including a covering portion 26 and a side portion 27, wherein the covering portion 26 covers the first slit S1 and the side portion 27 covers the second slit S2.
In some embodiments, the covering portion 26 and the side portion 27 are integrally formed with the main body portion 231, that is, the entire sealing member 23 is integrally formed, as shown in fig. 5, the sealing portion 232 can be seen in a manner that the side portion 27 extends from the longitudinal end of the main body portion 231 toward the direction intersecting the longitudinal direction, the covering portion 26 extends from the side portion 27 continuously along the extending direction of the side portion 27, but the covering portion 26 has a smaller size than the side portion 27 in the thickness direction (the direction in which the sealing member 23 is sandwiched by the adjuster 22 and the housing 21) perpendicular to the longitudinal direction, and thus, a step portion will be formed between the covering portion 26 and the side portion 27, the covering portion 26 forms a first surface 261 facing the thickness direction, the side portion 27 forms a second surface 271 facing the longitudinal direction, and the first surface 261 and the second surface 271 intersect the straight line L1.
Alternatively, the sealing portion 232 may also be described as the covering portion 26 extends from the main body portion 231 in the longitudinal direction and a direction intersecting the longitudinal direction, the side portion 27 extends from a side of the covering portion 26 close to the main body portion 231 toward the thickness direction, and the step portion will be formed on a side of the covering portion 26 away from the main body portion 231.
When the seal member 23 is mounted, the main body portion 231 is disposed adjacent to the friction member 25, the cover portion 26 covers a part of the friction member 25, the cover portion 26 covers the first slit S1, or the cover portion 26 is opposite to the first slit S1, and at least a part of the side portion 27 reaches above the second slit S2 or reaches a position opposite to the second slit S2, i.e., at least a part of the side portion 27 is closer to the developer discharge port 214 than the second slit S2, so that both the first slit S1 and the second slit S2 between the seal member 23 and the friction member 25 can be sealed, and the sealing property of the process cartridge is effectively improved; as shown in fig. 6B, it is preferable that the side portion 27 exceeds the intersection line L, that is, the side portion 27 is also opposed to the supporting portion 212, and the developer is unlikely to leak from between the friction member 25 and the second mounting portion 211.
In other embodiments, a portion of the main body 231 adjacent to the side portion 27 may be cut away to form a positioning portion, such that the positioning portion may serve to position the sealing member 23 when the sealing member 23 is installed, and the first gap S1 may still be sealed by the cover portion 26 and the second gap S2 may still be sealed by the side portion 27 after the adjustment member 22 is installed.
Example two
Fig. 7 is a perspective view of the sealing member according to the second embodiment of the present invention after being attached to the process cartridge casing.
In the present embodiment, the covering portion 26 is formed as a separate component, as shown in fig. 7, the covering portion 26 is formed separately from the main body portion 231, the side portion 27 is formed integrally with the main body portion 231, when the sealing member 23 is clamped by the adjuster 22 and the housing 21, the first slit S1 is still sealed by the covering portion 26, the second slit S2 is still sealed by the side portion 27, and the manufacturing process of the sealing member 23 of this structure is simplified as its structure is simplified.
As described above, the sealing member 23 is provided with the sealing part 232 in addition to the main body part 231, wherein the sealing part 232 has the covering part 26 for sealing the first slit S1 and the side part 27 for sealing the second slit S2, and at least one of the covering part 26 and the side part 27 is integrally formed with the main body part 231, thereby effectively improving the sealing effect of the sealing member 23.
Claims (7)
1. A sealing member for mounting in a process cartridge including a casing accommodating a developer, the developer being rotatably mounted in the casing, an adjusting member fixedly mounted in the casing, and a friction member located at a longitudinal end of the casing, the casing having a developer discharge port for discharging the developer toward the developer; the adjusting piece is abutted against the outer surface of the developing piece, and the longitudinal tail end of the developing piece is contacted with the friction piece; a sealing member and a friction member are provided along a periphery of the developer discharge port;
it is characterized in that the preparation method is characterized in that,
the sealing member includes a main body portion extending in a longitudinal direction, a covering portion and a side portion, at least one of the covering portion and the side portion being integrally formed with the main body portion;
a first gap facing the regulating member is formed between the main body part and the friction member, and a second gap is formed at the intersection of one side of the sealing member facing the developer discharge port and one side of the friction member facing the developer discharge port;
the cover portion is used for sealing the first gap, and the side portion is used for sealing the second gap.
2. A seal according to claim 1, wherein the cover covers a portion of the friction member and at least a portion of the side portion reaches above or opposite the second gap when the seal is installed.
3. The seal according to claim 1, wherein the covering portion covers a portion of the friction member when the seal is mounted, and at least a portion of the side portion is closer to the developer discharge port than the second slit.
4. A seal according to claim 1, 2 or 3, wherein a portion of the main body portion adjacent the side portion is cut away to form the locating portion.
5. A process cartridge including a casing accommodating a developer, a developing member rotatably mounted to the casing, an adjusting member fixedly mounted to the casing, and a friction member located at a longitudinal end of the casing, the casing having a developer discharge port discharging the developer toward the developing member; the adjusting piece is abutted against the outer surface of the developing piece, and the longitudinal tail end of the developing piece is contacted with the friction piece;
it is characterized in that the preparation method is characterized in that,
the process cartridge further includes a seal member extending in the longitudinal direction, the seal member and the friction member being disposed along a periphery of the developer discharge port;
the sealing member includes a main body portion extending in a longitudinal direction, a covering portion and a side portion, at least one of the covering portion and the side portion being formed integrally with the main body portion;
a first gap facing the regulating member is formed between the main body portion and the friction member, and a second gap is formed at an intersection of a side of the sealing member facing the developer discharge port and a side of the friction member facing the developer discharge port;
the cover portion is used for sealing the first gap, and the side portion is used for sealing the second gap.
6. A process cartridge according to claim 5, wherein the sealing member is mounted to a first mounting portion of the casing, the friction member is mounted to a second mounting portion of the casing, the casing further has a supporting portion for supporting the second mounting portion, and the side portion is further opposed to the supporting portion.
7. A process cartridge according to claim 5, wherein the sealing member is mounted to a first mounting portion of the casing, the friction member is mounted to a second mounting portion of the casing, and the side portion exceeds an intersection line of the friction member and the second mounting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222453011.8U CN218497344U (en) | 2022-09-15 | 2022-09-15 | Sealing member and process cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222453011.8U CN218497344U (en) | 2022-09-15 | 2022-09-15 | Sealing member and process cartridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218497344U true CN218497344U (en) | 2023-02-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222453011.8U Active CN218497344U (en) | 2022-09-15 | 2022-09-15 | Sealing member and process cartridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218497344U (en) |
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2022
- 2022-09-15 CN CN202222453011.8U patent/CN218497344U/en active Active
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