Developing box and processing box

Abstract

The invention discloses a developing box and a processing box. The developing cartridge includes: a developing frame provided with an opening; the developing roller is arranged in the opening part, first sealing surfaces are arranged at the two ends of the opening part in the length direction, and first sealing pieces are arranged between the first sealing surfaces and the developing roller; a second sealing piece is arranged on the first side and / or the second side of the opening part in the width direction of the opening part; the corresponding end parts of the first sealing element and the second sealing element are provided with connecting areas, a glue injection groove is formed in the developing frame body, and the glue injection groove is filled with sealant for sealing gaps of the connecting areas; and the detection channel communicates with the glue injection groove and is used for detecting the sealant filling state of the glue injection connection area through a sensor. In the embodiment, the corresponding ends of the first sealing piece and the second sealing piece are provided with the connecting areas and are further sealed through the sealant, the good sealing performance is achieved, and the filling amount of the sealant can be accurately controlled through the arrangement of the detection channel.

Description

Technical Field

[0001] The present invention relates to a developing box and a processing box. Background Art

[0002] In an electronic photographic imaging device such as a laser printer, a copier, a fax machine, etc., a process cartridge for performing an imaging operation is usually installed, and the process cartridge can generally be removed from the electronic photographic imaging device. Existing process cartridges mainly include an integrated process cartridge in which a photosensitive drum cartridge and a developing cartridge are integrated together, and a split process cartridge in which a photosensitive drum cartridge and a developing cartridge are relatively independently arranged.

[0003] The developer box is provided with a developer roller and a powder discharge knife. The developer roller is generally rotatably installed in the opening of the developer frame, and is used to supply the developer in the developer frame to the photosensitive drum of the drum box, so that the electrostatic latent image on the photosensitive drum is developed into an image. In order to prevent the developer in the developer frame from leaking from the opening, it is necessary to set a seal around the opening. Specifically, a first seal for sealing the gap between the developer roller and the developer frame is set at both ends of the opening, and a second seal for sealing the gap between the powder discharge knife and the developer frame is set on the side of the opening where the powder discharge knife is installed. The first seal is generally made of felt, and the second seal is generally made of sponge strips.

[0004] In the prior art, the corresponding ends of the first seal and the second seal are generally designed to have a gap, and the gap between the two is filled with sealant manually, which makes it difficult to accurately control the amount of filler. If there is too little sealant, it will not have a good sealing effect, and if there is too much sealant, it will easily cause contamination to other components (such as the developing roller). Therefore, it is necessary to improve the existing sealing structure. Summary of the invention

[0005] In view of the shortcomings of the prior art, the main purpose of the present invention is to provide a developer box that can well seal the opening of the developer frame and accurately control the filling amount of the sealant.

[0006] In order to achieve the above main purpose, the first aspect of the present invention discloses a developing box, comprising:

[0007] The developing frame is provided with an opening portion communicating with the internal cavity thereof;

[0008] A developing roller rotatably disposed in the opening;

[0009] The opening is provided with first sealing surfaces at both ends in the length direction, and a first sealing member is provided between the first sealing surface and the developing roller; the opening is provided with a second sealing member on the first side and / or the second side in the width direction;

[0010] Wherein, the corresponding ends of the first sealing member and the second sealing member have a connection area, and the developing frame is provided with a glue injection groove, and the glue injection groove is filled with a sealant for sealing the gap in the connection area;

[0011] The detection passage is connected to the glue injection groove and is used to detect the sealing glue filling state of the connection area through the sensor.

[0012] In the above technical solution, the connection area between the corresponding ends of the first seal and the second seal is further sealed by the sealant in the glue injection groove, so that better sealing performance can be achieved; further, by setting a detection passage connected to the glue injection groove, the filling state of the sealant in the connection area can be detected by using a sensor, which is conducive to accurately controlling the filling amount of the sealant.

[0013] According to a specific embodiment of the present invention, the developing box is provided with a powder discharge knife, which is installed on the developing frame along the length direction of the opening and is located on the first side of the opening; a second sealing surface is provided on the first side of the opening, and a second sealing member is provided between the knife holder of the powder discharge knife and the second sealing surface.

[0014] Furthermore, the second sealing member provided between the blade holder of the powder discharging blade and the second sealing surface comprises an elastic sealing strip.

[0015] According to a specific embodiment of the present invention, a third sealing surface is provided on the second side of the opening, a second sealing member is mounted on the third sealing surface, and the second sealing member mounted on the third sealing surface forms elastic contact with the developing roller.

[0016] Furthermore, the second sealing member installed on the third sealing surface is made of a transparent material, so that the sensor can detect the filling state of the sealant in the glue injection groove through the second sealing member installed on the third sealing surface.

[0017] According to a specific embodiment of the present invention, the glue injection groove includes a first groove portion and a second groove portion that are interconnected, and the first groove portion is filled with a sealant for sealing the gap in the connection area.

[0018] In the above technical solution, the glue injection groove includes a first groove portion and a second groove portion. The sealant in the first groove portion fills the gap at the connection between the first seal and the second seal. After the sealant fills the first groove portion, it can flow into the second groove portion to avoid contamination of other components (such as the developing roller and the powder discharge knife).

[0019] Further, the detection passage includes a first detection passage communicating with the first groove portion and / or a second detection passage communicating with the second groove portion.

[0020] In an embodiment of the present invention, the corresponding ends of the first seal and the second seal contact each other or have a gap in the connection area. Preferably, the corresponding ends of the first seal and the second seal contact each other in the connection area to achieve a better sealing effect.

[0021] According to a specific embodiment of the present invention, the first sealing member includes a felt in contact with the developing roller. Further, the first sealing member may also include an elastic layer formed on the side of the felt facing away from the developing roller, and the elastic layer may be a sponge.

[0022] A second aspect of the present invention discloses a processing box, including a drum box provided with a photosensitive drum, and any one of the aforementioned developing boxes is installed on the drum box.

[0023] In order to more clearly illustrate the purpose, technical solutions and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is an overall structural diagram of an embodiment of a developing cartridge of the present invention;

[0025] Figure 2 is an exploded view of the structure of an embodiment of a developing cartridge of the present invention;

[0026] Figure 3 is an overall structural diagram of a developing frame in the embodiment;

[0027] Figure 4 is a structural diagram of an end portion of a developing frame in which a first seal, a second seal and a third seal are installed in an embodiment;

[0028] Figure 5 is a structural diagram of the end portion of the developing frame in the embodiment;

[0029] Figure 6 It is a schematic diagram of a structure for detecting the filling state of the sealant in the connection area by using different sensors;

[0030] Figure 7 is an overall structural diagram of an embodiment of a process cartridge of the present invention;

[0031] Figure 8 1 is a structural diagram of the developer box and the drum box in the embodiment when they are not connected. DETAILED DESCRIPTION

[0032] In the following description, many specific details are explained in conjunction with the embodiments to facilitate a full understanding of the present invention. However, it should be understood that the following embodiments and detailed descriptions are only for illustrative purposes and do not limit the scope of protection of the present invention.

[0033] Developer Box

[0034] like Figure 1 and 2 As shown, the developing box 100 of the embodiment includes a developing frame 110, a developing roller 120, a powder knife 130 and a driving head 140. The developing frame 110 is provided with an opening 111 connected to its internal cavity, and the internal cavity of the developing frame 110 forms a developer storage chamber. The developing roller 120 is rotatably arranged in the opening 111, and is used to supply the developer in the developing frame 110 to the photosensitive drum.

[0035] In the embodiment, the developing frame 110 is provided with a first supporting side plate 112 and a second supporting side plate 113 at both ends of the developing roller 120 in the axial direction, and the developing roller 120 is rotatably supported on the first supporting side plate 112 and the second supporting side plate 113. The first supporting plate 112 and the second supporting plate 113 may be integrally formed with the developing frame 110 or separately provided, and the present invention is not limited thereto.

[0036] A developing roller gear 121 is provided at one axial end of the developing roller 120, and the developing roller gear 121 forms a gear transmission match with the driving head 140 directly or indirectly through an intermediate gear. The driving head 140 can receive a rotational driving force from the electrophotographic imaging device to drive the developing roller 120 to rotate through the developing roller gear 121.

[0037] The powder knife 130 is installed on the developing frame 110 along the length direction of the opening 111 (that is, the axial direction of the developing roller 120). In the embodiment, the powder knife 130 includes a knife holder 131 and a blade 132, and the blade 132 forms an elastic contact with the surface of the developing roller 120, which can control the thickness of the developer attached to the surface of the developing roller 120. The end of the knife holder 131 is provided with a fixing hole 133 for installing a screw, so that the knife holder 131 is fixed to the developing frame 110 by the screw.

[0038] like Figure 2-4 As shown, the opening portion 111 is provided with first sealing surfaces 151 at both ends in the length direction thereof, and a sealing member 161 (first sealing member) is provided between the first sealing surface 151 and the developing roller 120 to seal the gap between the first sealing surface 151 and the developing roller 120. Preferably, the sealing member 161 includes a felt in contact with the developing roller 120; further, the sealing member 161 may also include an elastic layer formed on the side of the felt facing away from the developing roller 120, and the elastic layer may be a sponge.

[0039] The opening 111 has a first side and a second side on both sides in the width direction, and the side of the opening 111 located at the powder discharge knife 130 is the first side. The first side is provided with a second sealing surface 152, and a sealing member 162 (one of the second sealing members) is provided between the blade holder 131 of the powder discharge knife 130 and the second sealing surface 152 to seal the gap between the two. Preferably, the sealing member 162 includes an elastic sealing strip such as a sponge strip.

[0040] like Figure 4 As shown, the corresponding ends of the seal 161 and the seal 162 have a connection area A that contacts each other, for example, one end of the seal 161 overlaps the corresponding end of the seal 162 to form the connection area A. In order to ensure that the connection area A is reliably sealed, as shown in FIG. Figure 3 As shown, a glue injection groove 171 (first glue injection groove) is provided on the developing frame 110 , and the glue injection groove 171 is filled with sealant to seal the gap existing in the connecting area A.

[0041] As a variation, the corresponding ends of seal 161 and seal 162 may not be in contact, that is, there may be a gap between the two. In this case, the gap serving as the connection area between seal 161 and seal 162 is filled and sealed by the sealant flowing in from the injection groove 171.

[0042] As described in detail later, the developer box is also provided with a detection passage connected to the glue injection groove 171, which is used to detect the filling state of the sealant in the glue injection groove 171 to the connection area A through a sensor. In the present invention, the detection passage can be a detection hole or a gap connected to the glue injection groove 171, and the detection hole or the gap can be sealed by a transparent sealing film to prevent the sealant from flowing out of the detection hole or the gap. When assembling the developer box, an automatic glue injection machine can be used to inject glue into the glue injection groove 171 to improve production efficiency; during the glue injection process, a sensor is used to detect the filling state of the sealant in the connection area A, which is conducive to accurately controlling the filling amount of the sealant.

[0043] Preferably, Figure 5 As shown, the injection groove 171 includes a first groove portion 1711 and a second groove portion 1712 with a partition wall 1713 in the middle, a portion of the first groove portion 1711 is exposed from the first sealing surface 151 and the second sealing surface 152; the second groove portion 1712 is connected to the first groove portion 1711 through a connecting hole / notch 1714 provided on the partition wall 1713. Along the length direction of the opening portion 111, the second groove portion 1712 is provided on the inner side of the first groove portion 1711 to avoid affecting the installation of the end element of the developing frame 110.

[0044] In the embodiment, the glue injection groove 171 is divided into a first groove portion 1711 and a second groove portion 1712. The first groove portion 1711 can ensure that the sealant effectively fills the gap at the connection between the seal 161 and the seal 162. After the sealant fills the first groove portion 1711, it can flow into the second groove portion 1712 to avoid contamination of other components (such as the developing roller and the powder discharge knife).

[0045] In the embodiment, the detection passage includes a first detection passage 1715 connected to the first groove portion 1711 and / or a second detection passage 1716 connected to the second groove portion 1712. Preferably, the first detection passage 1715 is configured to be exposed from the longitudinal end of the developing frame 110, and the second detection passage 1716 is configured to be exposed from the knife holder 131 of the powder discharge knife 130. Among them, the first detection passage 1715 and the second detection passage 1716 are exposed from different directions, which is conducive to the layout of different sensors for performing glue filling detection from the first detection passage 1715 and the second detection passage 1716 on the glue injection production line. The first detection passage 1715 connected to the first groove portion 1711 can play an exhaust role in the glue injection process, prompting the sealant to better fill the gap in the connection area A.

[0046] In the embodiment, the first detection passage 1715 and the second detection passage 1716 can form a through hole structure, and the through hole can be circular, rectangular or other shapes, and the present invention is not limited to this. As a variation, the first detection passage 1715 and the second detection passage 1716 can also be gaps connected to the first groove portion 1711 and the second groove portion 1712 respectively. Further, the first detection passage 1715 and the second detection passage 1716 can be sealed by a transparent sealing film to prevent the sealant from flowing out of the detection hole or gap.

[0047] Figure 6 The detection process of filling the sealant 173 into the injection groove 171 is shown. Figure 5 and 6 As shown, during the glue injection process, the first sensor 301 and the second sensor 302 on the production line can detect the sealant filling state of the connection area A. Specifically, when the first sensor 301 or the second sensor 302 detects the sealant, it means that the sealant 173 has filled the gap of the connection area A.

[0048] As a variation of the embodiment of the present invention, the second groove 1712 may not be provided on the developing frame 110, that is, the glue injection groove 171 may only have the first groove 1711, and during the glue injection process, the first sensor 301 detects the filling state of the sealant in the first groove 1711 to the connection area A. Among them, the first detection passage 1715 may be provided above the connection area A (with the posture of the developing frame 110 during the glue injection as a reference), and when the sealant is filled to the height of the first detection passage 1715, it indicates that the gap in the connection area A has been reliably filled and sealed by the sealant.

[0049] As another variation of an embodiment of the present invention, the second groove 1712 can be set at other positions of the developing frame 110. For example, with reference to the posture of the developing frame 110 during the injection of glue, the second groove 1712 can be set below the connection area A. In other words, the second groove 1712 can be set on the downstream side of the connection area A on the flow path of the sealant to better ensure that the connection area A is reliably sealed. In this way, when the sensor detects that the second groove 1712 is filled with sealant, it indicates that the gap in the connection area A has been reliably filled and sealed with sealant.

[0050] Further, a third sealing surface 153 is provided on the second side of the opening 111 (the side opposite to the second sealing surface 152), and a sealing member 163 (second sealing member 2) is provided on the third sealing surface 153. The sealing member 163 is in elastic contact with the developing roller 120 to seal the gap between the developing roller 120 and the third sealing surface 153. The sealing member 163 can be a sealing sheet with a certain toughness. Preferably, the sealing member 163 is made of a transparent material.

[0051] In the embodiment, Figure 4 As shown, the corresponding ends of the seal 161 and the seal 163 have a connection area B; wherein the seal 161 and the seal 163 can be in contact with each other in the connection area B, or there can be a gap. Figure 3 As shown, a glue injection groove 172 (second glue injection groove) is provided on the developing frame 110, and the glue injection groove 172 is filled with sealant to seal the gap existing in the connection area B. The glue injection port 1721 of the glue injection groove 172 can be set on the surface of the developing frame 110 facing away from the third sealing member 163, and the glue injection groove 172 is filled with sealant for sealing the gap between the sealing member 161 and the sealing member 163. Among them, at least a part of the glue injection groove 172 can be set on the third sealing surface 153.

[0052] Furthermore, the glue injection groove 172 is provided with a detection passage 1722 connected thereto, and the detection passage 1722 may be a notch, a groove or a through hole exposed from the third sealing surface 153 but covered by the transparent seal 163. When injecting glue, a sensor may be used to detect the filling state of the connection area B by the sealant in the glue injection groove 172 through the third seal 163. Specifically, when the sealant is filled into the glue injection groove 172, as the sealant in the glue injection groove 172 fills the gap of the connection area B, the sealant will further flow into the detection passage 1722, and the sealant in the detection passage 1722 may be detected by the sensor on the production line through the transparent seal 163, so that the sensor can detect the filling state of the connection area B by the sealant in the glue injection groove 172.

[0053] As a variation, the glue injection groove 172 may also include a first groove portion and a second groove portion that are separated but interconnected, and the sealant in the first groove portion may flow into and seal the gap in the connection area B. The detection path for detecting the filling state of the sealant in the connection area B may be arranged to be connected to the first groove portion and / or the second groove portion, and the details may refer to the previous description, which will not be repeated here.

[0054] In the present invention, the sealant is preferably a colored sealant, and the sensor may be a color sensor.

[0055] Processing box

[0056] like Figure 7 and 8 As shown, the process cartridge of the embodiment includes a drum cartridge 200 and the developer cartridge 100 of the above embodiment. The drum cartridge 200 is provided with a drum frame 210 and a photosensitive drum 220, and the photosensitive drum 220 is rotatably arranged relative to the drum frame 210.

[0057] In the embodiment, drum end covers 211 are respectively provided at opposite ends of the drum frame 210, and the developing box 100 is connected to the drum end covers 211, for example, rotatably connected to the drum end covers 211. The developing box 100 and the drum box 200 may also be connected in other ways, which is not limited by the present invention.

[0058] Although the present invention has been described above through embodiments, it should be understood that the above embodiments are only used to exemplarily describe the feasible implementation schemes of the present invention and should not be interpreted as limiting the scope of protection of the present invention. That is, any substitution or change made by those skilled in the art in accordance with the present invention should also be covered by the scope of protection of the claims of the present invention.

Claims

1. A developing box, include: The developing frame is provided with an opening portion communicating with the internal cavity thereof; a developing roller rotatably disposed in the opening; The opening is provided with first sealing surfaces at both ends in the length direction thereof, and a first sealing member is provided between the first sealing surface and the developing roller; the opening is provided with a second sealing member on the first side and / or the second side in the width direction thereof; Features: The corresponding ends of the first sealing member and the second sealing member have a connection area, and the developing frame is provided with a glue injection groove, and the glue injection groove is filled with a sealant for sealing the gap in the connection area; The detection passage is communicated with the glue injection groove and is used for detecting the filling state of the sealant in the connection area through a sensor.

2. The developing cartridge according to claim 1, Features: A powder discharge knife is installed on the developing frame along the length direction of the opening and is located on the first side of the opening; a second sealing surface is provided on the first side of the opening, and a second sealing member is provided between the knife holder of the powder discharge knife and the second sealing surface.

3. The developing cartridge according to claim 2, Features: The second sealing member arranged between the blade holder of the powder discharging knife and the second sealing surface comprises an elastic sealing strip.

4. The developing cartridge according to claim 1, Features: A third sealing surface is provided on the second side of the opening, and the second sealing member is installed on the third sealing surface. The second sealing member installed on the third sealing surface forms elastic contact with the developing roller.

5. The developing cartridge according to claim 4, Features: The second sealing member installed on the third sealing surface is made of a transparent material.

6. The developing cartridge according to claim 1, Features: The glue injection groove comprises a first groove portion and a second groove portion which are connected to each other, and the first groove portion is filled with a sealant for sealing the gap in the connection area.

7. The developing cartridge according to claim 6, Features: The detection passage includes a first detection passage communicating with the first groove portion and / or a second detection passage communicating with the second groove portion.

8. The developing cartridge according to claim 1, Features: The respective ends of the first seal member and the second seal member are in contact with each other or spaced apart at the connection region.

9. The developing cartridge according to claim 1, Features: The first sealing member includes a felt that contacts the developing roller.

10. A process cartridge comprising a drum cartridge provided with a photosensitive drum, Features: The drum box is mounted with a developing box according to any one of claims 1 to 9.

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