CN114911144B - Developer layer thickness adjusting device and printer developing unit and printer - Google Patents
Developer layer thickness adjusting device and printer developing unit and printer Download PDFInfo
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- CN114911144B CN114911144B CN202210579318.4A CN202210579318A CN114911144B CN 114911144 B CN114911144 B CN 114911144B CN 202210579318 A CN202210579318 A CN 202210579318A CN 114911144 B CN114911144 B CN 114911144B
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- developing roller
- sealing
- printer
- developer layer
- layer thickness
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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
- G03G15/0896—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894
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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
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0865—Arrangements for supplying new developer
- G03G15/0867—Arrangements for supplying new developer cylindrical developer cartridges, e.g. toner bottles for the developer replenishing opening
- G03G15/087—Developer cartridges having a longitudinal rotational axis, around which at least one part is rotated when mounting or using the cartridge
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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
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0877—Arrangements for metering and dispensing developer from a developer cartridge into the development unit
- G03G15/0881—Sealing of developer cartridges
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
The invention provides a developer layer thickness adjusting device for a printer developing unit, the printer developing unit and a printer. The developer layer thickness regulating device includes: a thickness adjustment blade comprising: a connection portion and a bending portion, the bending portion being a bending structure extending at a predetermined angle from a developing roller contact portion with which the developing roller is in contact toward a direction away from the developing roller; the bending angle of the connecting part and the bending part is an arc fillet which is elastically contacted with the developing roller; a sealing member made of an elastic material adapted to the shape of the developing roller; the sealing element comprises: an arc-shaped sealing connection part which is concave towards the developing roller and is connected with the developing roller, and a sealing extension part which extends towards the direction far away from the developing roller; the bending part is connected with the sealing extension part in an inserting way. The bending part and the sealing extension part which are mutually connected in an inserting way can effectively solve the problem that the connection firmness of the sealing element and the thickness adjusting scraping blade is poor and the carbon powder sealing performance of the developer layer thickness adjusting device cannot meet the requirement.
Description
Technical Field
The invention relates to the technical field of developer layer thickness regulation of printers, in particular to a developer layer thickness regulation device for a printer developing unit, the printer developing unit and a printer.
Background
Development in a printer is the process of converting an electrostatic latent image on a photoreceptor drum into a visible toner image with a charged developer. An image forming apparatus employing a one-component non-magnetic developer includes a blade in contact with a developer roller. The blade is used to adjust the thickness of the developer layer so that the developer layer remains on the developing roller and has a predetermined thickness.
For example, in the prior art, patent document publication No. CN100395670C discloses: a developer layer thickness regulating device of a developing unit, said device comprising: a blade having a blade body in elastic contact with the developing roller, a curved portion formed on the blade body and extending from a developing roller contact portion in contact with the developing roller at a predetermined angle, and a concave portion formed on the curved portion; and a sealing element in contact with the wiper blade, wherein the sealing element overlaps the recessed portion; wherein a longitudinal length L1 of the recessed portion is longer than a length L2 of the sealing member contacting portion through which the sealing member contacts the recessed portion.
In the above prior art, only the seal member contacting the wiper blade is passed, and the seal member is overlapped with the recessed portion of the wiper blade. The sealing element and the scraping blade of the developer layer thickness regulating device are not tightly connected together, and when the sealing element and the scraping blade are influenced by larger external force or the printer is collided, the sealing element and the scraping blade are easy to have the problem of matching position deviation, so that the carbon powder sealing performance of the developer layer thickness regulating device cannot meet the requirement.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to solve the problems that in the developer layer thickness regulating device of the printer developing unit in the prior art, the connection firmness of the existing sealing element and the wiper blade is poor, and the carbon powder sealing performance of the developer layer thickness regulating device cannot meet higher use requirements. Thus, there is provided a developer layer thickness regulating apparatus for a printer developing unit, comprising:
a thickness adjustment blade comprising: a connection portion and a bending portion, the bending portion being a bending structure extending at a predetermined angle from a developing roller contact portion with which the developing roller is in contact toward a direction away from the developing roller; the bending angle of the connecting part and the bending part is an arc fillet which is elastically contacted with the developing roller;
a sealing member of an elastic material adapted to the shape of the developing roller; the sealing element comprises: an arc-shaped sealing connection part which is concave towards the developing roller and is connected with the developing roller, and a sealing extension part which extends towards a direction far away from the developing roller; the bending part is connected with the sealing extension part in an inserting way.
Optionally, an insertion fixing groove matched with the bending part for insertion is preset on the sealing extension part.
Optionally, the depth value of the plugging fixing groove is at least 1/4 of the bending length of the bending part.
Optionally, the sealing element is disposed at two end positions of the thickness adjustment wiper blade.
Optionally, the thickness adjusting blade is disposed in a rotation direction of the developing roller, and the developing roller rotates toward a lower surface direction of the bending portion; the developing roller applies a pressing force toward the arc-shaped sealing connection portion so as to be tightly fitted toward the bent portion.
Optionally, the sealing element is made of sponge material; and/or the thickness adjusting scraping blade is beryllium bronze, stainless steel or phosphor bronze.
Optionally, the connecting part of the thickness adjusting wiper blade is fixedly connected with the wiper blade fixing bracket, and the connecting part is fixedly connected with the wiper blade fixing bracket through laser welding; and/or the number of the groups of groups,
the sealing extension part of the sealing element is fixedly connected with the shell fixing bracket; and/or the number of the groups of groups,
the sealing element comprises: a high-density sponge material at a side far away from the developing roller, and a felt material layer which is arranged on the high-density sponge material and corresponds to the developing roller; the high-density sponge material and the felt material layer are fixed together through a glue pressing device; the high-density sponge material is polyurethane foam material.
Optionally, the developer layer thickness adjusting device for a printer developing unit further includes:
the gap sealing gasket is made of elastic materials and is arranged between the connecting portion and the sealing element, and the surfaces of the gap sealing gasket are respectively tightly attached to the connecting portion and the sealing element.
Optionally, the density of the gap seal is less than the density value of the sealing element.
A printer developer unit comprising: a developer layer thickness regulating device for a printer developing unit; and a developing roller.
A printer, comprising: and a printer developing unit.
The invention has the beneficial effects that:
1. the invention provides a developer layer thickness regulating device for a printer developing unit, which comprises: a thickness adjustment blade comprising: a connection portion and a bending portion, the bending portion being a bending structure extending at a predetermined angle from a developing roller contact portion with which the developing roller is in contact toward a direction away from the developing roller; a sealing member of an elastic material adapted to the shape of the developing roller; the sealing element comprises: an arc-shaped sealing connection part which is concave towards the developing roller and is connected with the developing roller, and a sealing extension part which extends towards a direction far away from the developing roller; the bending part is connected with the sealing extension part in an inserting way.
In the present invention, the thickness regulating blade is used to regulate the thickness of the developer layer so that the developer layer remains on the developing roller and has a predetermined thickness. The bending part of the thickness adjusting scraping blade is connected with the sealing extension part on the sealing element in an inserting way, the thickness adjusting scraping blade and the sealing element are firmly connected through the structure, so that when the thickness adjusting scraping blade and the sealing element are subjected to acting force brought in the rotation process of the developing roller, the thickness adjusting scraping blade and the sealing element are firmly and reliably fixed together, and the problems that the sealing element and the scraping blade in the prior art are biased in position after being subjected to external force, and a gap is formed between the existing sealing element and the existing scraping blade, so that the sealing performance of carbon powder is reduced are avoided. Moreover, the thickness adjusting scraping blade and the sealing element are connected in an inserting mode, the thickness adjusting scraping blade and the sealing element can be mutually fixed, and deviation of the thickness adjusting scraping blade and the sealing element from a preset position is reduced, so that the thickness adjustment of the developer layer of the thickness adjusting scraping blade is guaranteed, and the sealing effect of the sealing element is guaranteed.
2. According to the developer layer thickness adjusting device for the printer developing unit, the sealing extension part is provided with the splicing fixing groove matched and spliced with the bending part in a preset mode.
Through predetermining grafting fixed slot on sealed extension, only need with the grafting fixed slot cooperation grafting on kink and the sealed extension in the assembly process can realize thickness adjustment doctor-bar and sealing element's connection. The fixing mode effectively improves the assembly efficiency.
3. The thickness regulating device for the developer layer of the printer developing unit provided by the invention has the advantages that the thickness regulating scraping blade is arranged in the rotating direction of the developing roller, and the developing roller rotates towards the lower surface direction of the bending part; the developing roller applies a pressing force toward the arc-shaped sealing connection portion so as to be tightly fitted toward the bent portion.
According to the invention, the setting position of the thickness adjusting doctor blade enables the developing roller to rotate towards the lower surface of the bending part, so that the developing roller can drive the arc-shaped sealing connecting part to move towards the lower surface of the bending part in the rotating process, and the arc-shaped sealing connecting part is tightly contacted with the lower surface of the bending part, so that the thickness adjusting doctor blade and the sealing element can be fully connected together in the using process, and the carbon powder sealing performance of the developer layer thickness adjusting device is ensured.
4. The invention provides a developer layer thickness regulating device for a printer developing unit, wherein a felt is further arranged on one side surface of a sealing element, which faces to a developing roller.
The developing roller in the present invention needs to be maintained to rotate at a high speed during operation, so that the above-mentioned sealing member is required to have both sealing performance and wear resistance. In order to improve the wear resistance of the sealing member, the present invention can effectively improve the wear resistance of the sealing member by providing a felt material layer on a side surface of the sealing member facing the developing roller. In addition, the felt material layer also has higher hardness, and meanwhile, the structural stability of the sealing element is improved, so that the sealing element is ensured not to generate unexpected deformation under the action of external force, and the sealing performance of the sealing element is ensured.
5. According to the developer layer thickness regulating device for the printer developing unit, the bending angle of the connecting part and the bending part is the arc-shaped round angle which is elastically contacted with the developing roller.
Through setting the connecting part and the bending part of the thickness adjusting doctor blade to be arc-shaped fillets, the arc-shaped fillets can be effectively and stably contacted with the developing roller in an elastic manner, and the thickness of the developer layer on the developing roller can be stably and reliably adjusted by the thickness adjusting doctor blade.
6. The invention provides a developer layer thickness regulating device for a printer developing unit, which further comprises: the gap sealing gasket is made of elastic materials and is arranged between the connecting portion and the sealing element, and the surfaces of the gap sealing gasket are respectively tightly attached to the connecting portion and the sealing element.
In the invention, by arranging the gap sealing gasket between the connecting part and the sealing element, the gap sealing gasket can effectively compensate the gap between the connecting part and the sealing element, thereby preventing the toner from overflowing from the gap between the connecting part and the sealing element. Moreover, the gap sealing gasket can be made of elastic materials, and the gap sealing gasket with the elastic structure can be fully and tightly attached to the thickness adjusting scraping blade and the sealing element, so that the sealing effect is ensured.
7. The invention provides a developer layer thickness regulating device for a printer developing unit, wherein the density of a gap sealing gasket is smaller than that of a sealing element.
In the present invention, the sealing member is required to be in full contact with the developing roller, and the developing roller is required to be rotated at a high speed during operation, so that the sealing member is required to have a small deformability and thus a good sealing performance, and thus the sealing member is made of a high sealing sponge. The main function of the gap gasket is to fill the gap between the sealing element and the thickness adjusting wiper blade to ensure more excellent sealing performance. After the thickness adjusting wiper blade is assembled, the deformation of each position in the length direction of the thickness adjusting wiper blade is required to be ensured to be in the same range, so that the thickness uniformity of the powder layer on the developing roller is ensured. The gap gasket in the present invention uses low density cotton. In addition, because the gap sealing gasket adopts low-density cotton, the low-density cotton has higher compressibility, and the sealing performance of the gap sealing gasket can be improved.
8. The invention provides a printer developing unit, comprising: a developer layer thickness regulating device for a printer developing unit; and a developing roller. The printer developing unit in the present invention includes the developer layer thickness regulating means, so the printer developing unit has all the advantageous effects of the developer layer thickness regulating means.
9. The printer provided by the invention comprises: and a printer developing unit. The printer in the present invention includes a printer developing unit. And the printer developing unit includes the developer layer thickness regulating device, the printer has all the advantageous effects of the developer layer thickness regulating device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view showing an assembly of a developing roller, a thickness regulating blade and a sealing member according to the present invention;
FIG. 2 is a schematic perspective view of a sealing element with a plugging fixing slot according to the present invention;
FIG. 3 is a schematic perspective view of a thickness adjusting wiper according to the present invention;
FIG. 4 is a schematic view of a clearance seal arrangement provided by the present invention;
FIG. 5 is a schematic view showing the connection structure of the wiper fixing bracket and the housing fixing bracket provided by the invention with the thickness adjusting wiper and the sealing element respectively;
fig. 6 is a schematic diagram showing the adhesion and fixation of the gap gasket provided by the present invention to the connecting portion in an expanded and uncompressed state.
Reference numerals illustrate:
1-a thickness adjustment wiper blade; a 2-connection; 3-bending part; 4-a developing roller; 5-a sealing element; 6-arc-shaped sealing connection parts; 7-a seal extension; 8-inserting and fixing grooves; 9-a wiper blade fixing bracket; 10-gap gasket; 11-housing fixing bracket.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
The present embodiment provides a developer layer thickness regulating apparatus for a printer developing unit, as shown in fig. 4, which includes:
the thickness adjustment doctor blade 1 is stainless steel material, and it includes: a connecting portion 2 and a bending portion 3, the bending portion 3 being a bending structure extending at a predetermined angle from a developing roller contact portion with the developing roller 4 toward a position away from the developing roller 4; the bending angle of the connecting part 2 and the bending part 3 is an arc fillet which is elastically contacted with the developing roller 4; the arc-shaped round corners can effectively enable the arc-shaped round corners to be in elastic contact with the developing roller 4 stably and reliably, and the thickness adjusting doctor blade 1 is guaranteed to adjust the thickness of a developer layer on the developing roller 4 stably and reliably; and as shown in fig. 3, the connecting part 2 of the thickness adjusting wiper blade 1 is fixedly connected with the wiper blade fixing bracket 9;
the sealing elements 5 are made of sponge materials, are arranged at the two ends of the thickness adjusting scraping blade 1, and are made of elastic materials matched with the shape of the developing roller 4; the sealing element 5 comprises: an arc-shaped seal connection portion 6 recessed toward the developing roller 4 and connected to the developing roller 4, and a seal extension portion 7 extending in a direction away from the developing roller 4; the bending part 3 is connected with the sealing extension part 7 in a plugging manner. In this embodiment, as shown in fig. 2, the sealing extension portion 7 is provided with a plugging fixing groove 8 that mates with and plugs with the bending portion 3. In addition, the depth value of the inserting fixing groove 8 is 1/4 of the bending length of the bending part 3. Through predetermining grafting fixed slot 8 on sealed extension 7, only need with the grafting fixed slot 8 cooperation grafting on kink 3 and the sealed extension 7 in the assembly process can realize thickness adjustment doctor-bar 1 and sealing element 5's connection. The fixing mode effectively improves the assembly efficiency; and as shown in fig. 5, the sealing extension 7 of the sealing element 5 is fixedly connected with the housing fixing bracket 11;
the gap seal 10 is shown in fig. 6 and 4, wherein the gap seal 10 in fig. 6 is in an expanded uncompressed state. The gap gasket 10 is made of an elastic material and is disposed between the connection portion 2 and the sealing member 5, and the surfaces of the gap gasket 10 are respectively closely attached to the connection portion 2 and the sealing member 5, thereby sealing a gap therebetween. In addition, in the present embodiment, a felt is further provided on a side surface of the sealing member 5 facing the developing roller 4. Moreover, the density of the gap seal 10 is less than the density value of the sealing element 5. The sealing member 5 in the present invention needs to be in full contact with the developing roller 4, and the developing roller 4 needs to be maintained to rotate at a high speed during operation, so the sealing member 5 needs to have a small deformability and thus a good sealing performance, so the sealing member 5 is made of a high sealing sponge. And the main function of the gap packing 10 is to fill the gap between the sealing member 5 and the thickness adjusting blade 1 to ensure more excellent sealing performance. After the above-mentioned thickness adjustment blade 1 is assembled, it is also necessary to ensure that the deformation amounts of the positions of the thickness adjustment blade 1 in the length direction are all within the same range, so as to ensure that the thickness of the powder layer on the developing roller 4 is uniform. The gap seal 10 in the present invention employs low density cotton. In addition, since the gap gasket 10 employs low density cotton, the low density cotton is more compressible, and the sealing performance of the gap gasket 10 can be improved.
Of course, the present embodiment is not particularly limited as to whether the gap seal 10 is provided, and in other embodiments, the gap seal 10 is not separately provided between the connecting portion 2 and the sealing member 5.
Of course, the depth of the plugging and fixing groove 8 is not particularly limited in this embodiment, and in other embodiments, the depth of the plugging and fixing groove 8 is 1/3 or 3/4 of the bending length of the bending portion 3.
Of course, the material of the thickness adjustment blade 1 is not particularly limited in this embodiment, and in other embodiments, the thickness adjustment blade 1 may be made of beryllium bronze or phosphor bronze.
Of course, the material of the gap sealing pad 10 is not particularly limited in this embodiment, and in other embodiments, the gap sealing pad 10 may be made of an inelastic material, so long as the gap between the connecting portion 2 and the sealing member 5 is sealed.
Of course, the material of the gap seal 10 is not particularly limited in this embodiment, and in other embodiments, a felt or other material similar to a felt may not be disposed on a side surface of the seal member 5 facing the developing roller 4.
Example 2
The present embodiment provides a developer layer thickness regulating apparatus for a printer developing unit, as shown in fig. 1 and 5, which includes:
the thickness adjustment doctor blade 1 is stainless steel material, and it includes: a connecting portion 2 and a bending portion 3, the bending portion 3 being a bending structure extending at a predetermined angle from a developing roller contact portion with the developing roller 4 toward a position away from the developing roller 4; the bending angle of the connecting part 2 and the bending part 3 is an arc fillet which is elastically contacted with the developing roller 4; the arc-shaped round corners can effectively enable the arc-shaped round corners to be in elastic contact with the developing roller 4 stably and reliably, and the thickness adjusting doctor blade 1 is guaranteed to adjust the thickness of a developer layer on the developing roller 4 stably and reliably; the connecting part 2 of the thickness adjusting scraping blade 1 is fixedly connected with the scraping blade fixing bracket 9;
the sealing elements 5 are made of sponge materials, are arranged at the two ends of the thickness adjusting scraping blade 1, and are made of elastic materials matched with the shape of the developing roller 4; the sealing element 5 comprises: an arc-shaped seal connection portion 6 recessed toward the developing roller 4 and connected to the developing roller 4, and a seal extension portion 7 extending in a direction away from the developing roller 4; the bending part 3 is connected with the sealing extension part 7 in a plugging manner. In this embodiment, as shown in fig. 2, the sealing extension portion 7 is provided with a plugging fixing groove 8 that mates with and plugs with the bending portion 3. In addition, the depth value of the inserting fixing groove 8 is 1/4 of the bending length of the bending part 3. Through predetermining grafting fixed slot 8 on sealed extension 7, only need with the grafting fixed slot 8 cooperation grafting on kink 3 and the sealed extension 7 in the assembly process can realize thickness adjustment doctor-bar 1 and sealing element 5's connection. The fixing mode effectively improves the assembly efficiency; and the sealing extension 7 of the sealing element 5 is fixedly connected to the housing fixing bracket 11.
In the present embodiment, the thickness regulating blade 1 is provided in the rotation direction of the developing roller 4, and the developing roller 4 rotates toward the lower surface direction of the bent portion 3; the developing roller 4 applies a pressing force toward the arc-shaped sealing connection portion 6 so as to be tightly fitted toward the bent portion 3. The setting position of the thickness adjusting wiper blade 1 enables the developing roller 4 to rotate towards the lower surface direction of the bending part 3, so that the developing roller 4 can drive the arc-shaped sealing connecting part 6 to move towards the lower surface of the bending part 3 in the rotating process, the arc-shaped sealing connecting part 6 is tightly contacted with the lower surface of the bending part 3, the thickness adjusting wiper blade 1 and the sealing element 5 can be fully connected together in the using process, and the carbon powder sealing performance of the developer layer thickness adjusting device is guaranteed.
Example 3
A printer developer unit comprising: a developer layer thickness regulating device for a printer developing unit; and a developing roller 4.
Example 4
A printer, comprising: and a printer developing unit. In addition, the printer developing unit includes: a developer layer thickness regulating device; and a developing roller 4.
Claims (10)
1. A developer layer thickness regulating apparatus for a printer developing unit, comprising:
thickness adjustment doctor blade (1), comprising: a connecting portion (2) and a bending portion (3), the bending portion (3) being a bending structure extending at a predetermined angle from a developing roller contact portion with the developing roller (4) toward a position away from the developing roller (4);
a sealing member (5) which is an elastic material adapted to the shape of the developing roller (4); the sealing element (5) comprises: an arc-shaped sealing connection part (6) which is concave towards the developing roller (4) and is connected with the developing roller (4), and a sealing extension part (7) which extends towards a direction away from the developing roller (4); the bending part (3) is connected with the sealing extension part (7) in an inserting way;
the sealing extension (7) of the sealing element (5) is fixedly connected with the shell fixing bracket (11);
a gap sealing gasket (10) arranged between the connecting part (2) and the sealing element (5), wherein the surfaces of the gap sealing gasket (10) are respectively tightly attached to the connecting part (2) and the sealing element (5);
the sealing element (5) comprises: a high-density sponge material at a side far away from the developing roller (4), and a felt material layer which is arranged on the high-density sponge material and is arranged corresponding to the developing roller (4); the high-density sponge material and the felt material layer are fixed together through a glue pressing device;
the gap sealing gasket (10) is made of elastic material, and the density of the gap sealing gasket (10) is smaller than the density value of the sealing element (5).
2. A developer layer thickness regulating device for a printer developer unit according to claim 1, wherein the sealing extension (7) is provided with a mating fixing groove (8) mating with the bending portion (3).
3. A developer layer thickness regulating device for a printer developer unit according to claim 2, wherein the plug-in fixing groove (8) has a depth value of at least 1/4 of the bending length of the bending portion (3).
4. A developer layer thickness regulating device for a printer developing unit according to claim 1, wherein the sealing member (5) is provided at both end positions of the thickness regulating blade (1).
5. The developer layer thickness regulating device for a printer developing unit according to any one of claims 1 to 4, wherein the thickness regulating blade (1) is provided in a rotation direction of the developing roller (4), and the developing roller (4) rotates toward a lower surface direction of the bent portion (3); the developing roller (4) applies a pressing force toward the arc-shaped sealing connection portion (6) so as to be tightly fitted toward the bent portion (3).
6. A developer layer thickness regulating device for a printer developing unit according to claim 1, wherein the sealing member (5) is a sponge material; and/or the thickness adjusting scraping blade (1) is beryllium bronze, stainless steel or phosphor bronze.
7. A developer layer thickness regulating device for a printer developing unit according to claim 1, wherein the connecting portion (2) of the thickness regulating blade (1) is fixedly connected to the blade fixing bracket (9).
8. The developer layer thickness regulating device for a printer developing unit according to claim 7, wherein the bent angle of the connecting portion (2) and the bent portion (3) is an arc rounded angle in elastic contact with the developing roller (4).
9. A printer developer unit, comprising:
the developer layer thickness regulating device for a printer developing unit according to any one of claims 1 to 8; the method comprises the steps of,
a developing roller (4).
10. A printer, comprising: the printer developer unit of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210579318.4A CN114911144B (en) | 2022-05-25 | 2022-05-25 | Developer layer thickness adjusting device and printer developing unit and printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210579318.4A CN114911144B (en) | 2022-05-25 | 2022-05-25 | Developer layer thickness adjusting device and printer developing unit and printer |
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| Publication Number | Publication Date |
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| CN114911144A CN114911144A (en) | 2022-08-16 |
| CN114911144B true CN114911144B (en) | 2023-05-30 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1079279B1 (en) * | 1999-08-23 | 2003-10-08 | Brother Kogyo Kabushiki Kaisha | Method of assembling a developing device |
| KR100594781B1 (en) * | 2004-04-29 | 2006-06-30 | 삼성전자주식회사 | A developer-layer device and a developing unit having the developer-layer device |
| CN102339002B (en) * | 2011-10-20 | 2013-07-10 | 珠海赛纳打印科技股份有限公司 | Developing box and imaging device |
| CN202631959U (en) * | 2012-05-28 | 2012-12-26 | 珠海天威飞马打印耗材有限公司 | Toner cartridge |
| CN205563079U (en) * | 2016-02-03 | 2016-09-07 | 珠海艾派克科技股份有限公司 | Developer thickness regulating member mounted in process cartridge and process cartridge |
| CN213338326U (en) * | 2020-10-16 | 2021-06-01 | 纳思达股份有限公司 | Powder outlet knife and developing box |
| CN214540391U (en) * | 2021-05-19 | 2021-10-29 | 珠海联合天润打印耗材有限公司 | Developing cartridge and sealing member |
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