CN214623305U - Developing box - Google Patents
Developing box Download PDFInfo
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- CN214623305U CN214623305U CN202120204665.XU CN202120204665U CN214623305U CN 214623305 U CN214623305 U CN 214623305U CN 202120204665 U CN202120204665 U CN 202120204665U CN 214623305 U CN214623305 U CN 214623305U
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- pressing
- pressing piece
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Abstract
The utility model relates to a developing box, this developing box including the box body that is used for holding the carbon dust, rotatably install the developer roll in the box body, be used for adjusting the play powder sword of developer roll surface carbon dust thickness, install at the vertical terminal sealing member of developer roll and be used for compressing tightly the pressing member of sealing member, the pressing member includes interconnect's fixed part and presses the splenium, and the fixed part is fixed on play powder sword or box body, presses the splenium including the first pressing piece and the second pressing piece of mutual spaced, first pressing piece is used for pressing the sealing member, and the second pressing piece is used for pressing out the powder sword, to the sealing member and play powder sword of being made by different materials, can obtain better pressing force, and the sealing member can be pressed more fully, therefore, the carbon dust can be effectively prevented from the vertical terminal leakage of developer roll.
Description
Technical Field
The utility model relates to a developing box for electronic photography imaging device.
Background
The developing cartridge is a container containing toner for supplying the toner to the photosensitive element, and fig. 1 is a perspective view of the conventional developing cartridge; fig. 2 is a partially exploded schematic view of a conventional developing cartridge. As shown in the drawing, the conventional developing cartridge includes a cartridge body 10 accommodating toner, a developing roller 11 rotatably mounted in the cartridge body 10, a toner feeding roller 13 for supplying the toner to the developing roller 11, and a toner discharging blade 12 for adjusting the thickness of the toner on the surface of the developing roller 11.
The box body 10 is provided with a cavity 10a for accommodating carbon powder, a developing bin 10d for accommodating the developing roller 11 and the powder feeding roller 13, and a supporting part 10c for supporting the powder discharging blade 12, wherein the powder discharging blade 12 comprises a blade holder 121 and a blade 122 which are connected with each other, the blade holder 121 is supported by the supporting part 10c, and the blade 122 is contacted with the outer surface of the developing roller 11; the cavity 10a and the developing bin 10d are communicated through the carbon powder circulation port 10b, generally, the volume of the cavity 10a is far larger than that of the developing bin 10d, and the supporting portion 10c extends to exceed the carbon powder circulation port 10b, so that carbon powder can be extruded in the developing bin 10d after entering the developing bin 10d from the carbon powder circulation port 10b, at the moment, the carbon powder is easy to agglomerate to cause unsmooth circulation of the carbon powder, and further the carbon powder leaks along the length direction of the supporting portion 10c and two longitudinal ends of the developing roller 11.
SUMMERY OF THE UTILITY MODEL
The utility model provides a developing box to the whole leakproofness of developing box is improved through the structure that changes the developing bin in the hope, prevents that the carbon dust from leaking, and concrete scheme is as follows:
a developing box comprises a box body used for containing carbon powder, a developing roller rotatably installed in the box body, a powder discharging blade used for adjusting the thickness of the carbon powder on the surface of the developing roller, a sealing piece installed at the longitudinal tail end of the developing roller and a pressing piece used for pressing the sealing piece.
Wherein, the first pressing sheet and the second pressing sheet are both connected with the fixing part; alternatively, the first pressing piece and the second pressing piece are formed to extend from the fixing portion.
The powder outlet knife comprises a knife rest arranged on the box body and a blade connected with the knife rest, the blade is abutted against the outer surface of the developing roller, and the second pressing blade presses the knife rest.
As one example, the first pressing piece and the second pressing piece have the same extension length.
In another embodiment, the first pressing piece and the second pressing piece have different extending lengths, and the first pressing piece is preferably closer to the fixing portion than the second pressing piece as a whole.
The utility model provides a pressing piece is including the first pressing piece and the second pressing piece that are used for pressing sealing member and play powder sword respectively, to the sealing member and play powder sword made by different materials, can obtain better pressing force, and the sealing member can be pressed more fully, therefore, the carbon dust can be effectively prevented from the vertical terminal leakage of developer roll.
Drawings
Fig. 1 is a perspective view of a conventional developing cartridge.
Fig. 2 is a partially exploded schematic view of a conventional developing cartridge.
Fig. 3 is a perspective view of the developing cartridge according to the present invention after the doctor blade is hidden.
Fig. 4A is a plan view of the developing cartridge according to the present invention after the doctor blade is hidden.
Fig. 4B is a sectional view of the developing cartridge according to the present invention, taken along a plane parallel to the mounting direction thereof.
Fig. 5 is a schematic view of a longitudinal end sealing structure of the developing roller and the doctor blade in the developing cartridge according to the present invention.
Fig. 6 is a schematic view of a longitudinal end sealing structure of a developing roller in a developing cartridge according to the present invention.
Fig. 7A is a perspective view of a pressing member for pressing the doctor blade and the developing roller end seal in the conventional developing cartridge.
Fig. 7B is a perspective view of a first pressing member for pressing the doctor blade and the developing roller end seal in the developing cartridge according to the present invention.
Fig. 7C is a perspective view of a second pressing member for pressing the doctor blade and the end seal of the developing roller in the developing cartridge according to the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 3 is a perspective view of the developing cartridge according to the present invention after hiding the doctor blade; fig. 4A is a plan view of the developing cartridge according to the present invention after hiding the doctor blade; fig. 4B is a sectional view of the developing cartridge according to the present invention, taken along a plane parallel to the mounting direction thereof.
For convenience of description, the same reference numerals will be used for the same components as those in the background of the invention. The developing cartridge 100 may be mounted in a mounting direction a, and includes a cartridge body 10 containing toner, and a developing roller 11, a toner feed roller 13, and an agitating frame 14 rotatably mounted in the cartridge body 10, wherein the toner is contained in a cavity defined by the cartridge body 10, the developing roller 11, the toner feed roller 13, and the agitating frame 14 are located in a developing hopper 10d, and the developing hopper 10d is directly communicated with the cavity, preferably, integrally formed, so that the toner may be directly conveyed to the developing hopper 10 d.
As shown in the figure, the developing cartridge 100 further includes a powder discharging blade 12 mounted on the cartridge body 10, the powder discharging blade 12 includes a blade holder 121 fixedly mounted on the cartridge body 10 and a blade 122 connected to the blade holder 12, the blade 122 abuts against the outer surface of the developing roller 1, and when the developing roller 11 rotates, the blade 122 adjusts the thickness of the toner on the surface of the developing roller 11. Along the longitudinal direction of the developing box 100, the supporting portion 10c is provided with a notch 10e, so that the space of the developing bin 10d in the thickness direction of the developing box is increased, the thickness direction refers to the direction perpendicular to the longitudinal direction and the mounting direction a of the developing box at the same time, when the developing box 100 works, carbon powder entering the developing bin 10d from the cavity is scattered by the stirring frame, and then is conveyed to the developing roller 11 by the powder conveying roller 13.
When the powder discharge blade 12 is mounted, a part of the blade holder 121 is opposed to the notch 10e in the thickness direction of the developing cartridge, specifically, a part of the blade holder 121 close to the developing roller 11 is opposed to the notch 10e, and the agitation frame 14 is opposed to the blade holder 121, as shown in fig. 4A, when viewed in the thickness direction of the developing cartridge 100, the agitation frame 14 is exposed from the notch 10e in a state where the powder discharge blade 12 is not mounted. For current development box, the utility model relates to an increase stirring frame 14 in development cartridge's development storehouse 10d, and be used for supporting out some supporting part 10c of powder sword 12 and amputate, form breach 10e, breach 10e is adjacent with remaining supporting part 10c, therefore, development storehouse 10 d's volume is increased, and the carbon dust that gets into development storehouse 10d has the bigger space that flows, and under stirring frame 14's stirring effect, the possibility of carbon dust caking is further reduced simultaneously.
Fig. 5 is a schematic view of a longitudinal end sealing structure of a developing roller and a doctor blade in the developing cartridge according to the present invention; fig. 6 is a schematic view of a longitudinal end sealing structure of a developing roller in a developing cartridge according to the present invention; fig. 7A is a perspective view of a pressing member for pressing a doctor blade and a developing roller end seal in a conventional developing cartridge; fig. 7B is a perspective view of a first pressing member for pressing the doctor blade and the end seal of the developing roller in the developing cartridge according to the present invention; fig. 7C is a perspective view of a second pressing member for pressing the doctor blade and the end seal of the developing roller in the developing cartridge according to the present invention.
In order to prevent the toner from leaking from the longitudinal end of the developing roller, the developing cartridge 100 further includes a sealing member 16 mounted at the longitudinal end of the developing roller 11 and a pressing member 15 for pressing the sealing member 16, the sealing member 16 being preferably an elastic member and contacting the longitudinal end of the developing roller 11; meanwhile, the sealing piece 16 is also contacted with the longitudinal end of the powder outlet blade 12, so that carbon powder is prevented from leaking between the end of the powder outlet blade and the sealing piece 16; the pressing member 15 simultaneously presses the doctor blade 12 and the sealing member 16, and generally, the pressing member 15 and the doctor blade 12 are made of metal, as shown in fig. 7A, the conventional pressing member 15 includes a fixing portion 151 and a pressing portion 152 connected to each other, the fixing portion 151 is fixed to the case 10 or the doctor blade 12, and the pressing portion 152 simultaneously presses the doctor blade 12 and the sealing member 16.
The powder outlet blade 12 is pressed, so that the powder outlet blade 12 can keep good contact with the surface of the developing roller 11, and the sealing piece 16 is pressed, so that the sealing piece 16 is elastically deformed, the longitudinal end of the powder outlet blade 12 and the sealing piece 16 are sealed, and the carbon powder is prevented from leaking from a gap between the longitudinal end of the powder outlet blade 12 and the sealing piece 16. However, when the pressing member 15 applies the same pressing force, the doctor blade 12 may be pressed, but the sealing member 16 is not sufficiently pressed, and a gap may be formed between the sealing member 16 and the doctor blade 12 to leak the powder.
As shown in fig. 7B, the first pressing member 15 still includes a fixing portion 151 and a pressing portion 152 connected to each other, the fixing portion 151 is fixed on the powder discharging blade 12 or the box 10, the pressing portion 152 includes a first pressing piece 152a and a second pressing piece 152B spaced from each other, but both the first pressing piece 152a and the second pressing piece 152B are connected to the fixing portion 151, and a gap 152c is formed between the first pressing piece 152a and the second pressing piece 152B, the first pressing piece 152a is used for pressing the sealing member 16, and the second pressing piece 152B is used for pressing the powder discharging blade 12.
When the fixing portion 151 is fixed, the first pressing piece 152a and the second pressing piece 152b respectively press the sealing member 16 and the holder 121 of the doctor blade, and due to the gap 152c, when the pressing member 15 applies the same pressing force, the sealing member 16 can be sufficiently pressed by the first pressing piece 152a, so that the sealing member 16 and the longitudinal end of the doctor blade 12 can be well sealed, and the leakage of the toner can be prevented.
As shown in fig. 7C, as another variation of the pressing member 15, the first pressing piece 152a and the second pressing piece 152b are still connected to the fixing portion 151, and a gap 152C is formed between the first pressing piece 152a and the second pressing piece 152b, that is, the first pressing piece 152a and the second pressing piece 152b of the present invention can be considered as extending from the fixing portion 151, and in the above embodiment, the extending lengths of the first pressing piece 152a and the second pressing piece 152b are the same, so that the manufacturing of the pressing member 15 in the above embodiment is relatively simple.
In the pressing member 15 of the present modified embodiment, the first pressing piece 152a and the second pressing piece 152b extend from the fixing portion 151 at different lengths, and when the fixing portion 151 is fixed, the pressing forces applied by the first pressing piece 152a and the second pressing piece 152b are different, and as shown in the drawing, the first pressing piece 152a is closer to the fixing portion 151 than the second pressing piece 152b as a whole, so that the pressing force applied by the first pressing piece 152a to the sealing member 16 is greater than the pressing force applied by the second pressing piece 152b to the doctor blade 12, that is, the sealing member 16 can be pressed more sufficiently, and a good seal can be obtained between the longitudinal end of the doctor blade 12 and the sealing member 16.
As described above, in the developing cartridge 100 according to the present invention, a part of the cartridge body opposite to the blade holder 121 of the toner discharge blade 12 is cut off to form the notch 10e, and at the same time, the stirring frame 14 is installed in the developing chamber opposite to the notch 10e, so that the volume of the developing chamber is increased, and the rotation of the stirring frame 14 is utilized to effectively prevent the toner from caking, thereby preventing the toner from leaking; of course, in the case where the agitating frame 14 is not allowed to be mounted, the toner can be effectively prevented from leaking in the longitudinal direction of the cartridge only by enlarging the developing hopper 10 d.
Claims (7)
1. The developing box is characterized in that the pressing piece comprises a fixing part and a pressing part which are connected with each other, the fixing part is fixed on the powder discharging knife or the box body, the pressing part comprises a first pressing piece and a second pressing piece which are spaced from each other, the first pressing piece is used for pressing the sealing piece, and the second pressing piece is used for pressing the powder discharging knife.
2. A developing cartridge according to claim 1, wherein the first pressing piece and the second pressing piece are connected to the fixing portion.
3. A developing cartridge according to claim 1, wherein the first pressing piece and the second pressing piece are each formed extending from the fixing portion.
4. A developing cartridge according to claim 2 or 3, wherein the powder discharging blade includes a blade holder mounted on the cartridge body and a blade attached to the blade holder, the blade abutting against an outer surface of the developing roller, the second pressing blade pressing the blade holder.
5. A developing cartridge according to claim 4, wherein the first pressing piece and the second pressing piece extend in the same length.
6. A developing cartridge according to claim 5, wherein the first pressing piece and the second pressing piece are different in extension length.
7. A developing cartridge according to claim 6, wherein the first pressing piece is located closer to the fixing portion than the second pressing piece as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120204665.XU CN214623305U (en) | 2021-01-25 | 2021-01-25 | Developing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120204665.XU CN214623305U (en) | 2021-01-25 | 2021-01-25 | Developing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214623305U true CN214623305U (en) | 2021-11-05 |
Family
ID=78438451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120204665.XU Active CN214623305U (en) | 2021-01-25 | 2021-01-25 | Developing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214623305U (en) |
-
2021
- 2021-01-25 CN CN202120204665.XU patent/CN214623305U/en active Active
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