Process cartridge and image forming apparatus

Abstract

The utility model discloses a processing box and image forming equipment. Processing box is used in image forming equipment, and processing box includes: casing, casing includes powder bin, and powder bin is used for storing toner, developing roller is installed in casing and is located at the export of powder bin, scraper is installed in casing and is contacted with the outer peripheral surface of developing roller, and the powder piece is installed in casing, and the powder piece covers at least part scraper setting, and the powder piece has the bending structure, and half surrounds the contact position setting of scraper and developing roller. According to the processing box of the utility model embodiment, can be attached more toner while guaranteeing the work of developing roller, and avoid too much toner from leaking in processing box.

Description

Technical Field

[0001] This utility model relates to the field of image forming equipment, and in particular to a processing box and an image forming device. Background Technology

[0002] In related technologies, image forming equipment utilizes laser imaging technology to create text or images on paper. This laser imaging equipment includes a processing cartridge detachably connected to the main body of the equipment. The processing cartridge contains a toner hopper for storing toner, and also includes functional components such as a photosensitive drum, a charging roller, and a developing roller mounted on the housing, all used for imaging. The toner in the toner hopper is drawn onto the developing roller through the toner hopper outlet, and the developing roller is located at the toner hopper outlet.

[0003] In related technologies, if the outlet size of the powder hopper is small, the developing roller will adsorb too little toner during operation; if the outlet size of the powder hopper is large, too much toner will easily leak out. Utility Model Content

[0004] This invention provides a processing cartridge and an image forming apparatus that can ensure that a large amount of toner adheres to the developing roller while preventing excessive toner leakage from the processing cartridge.

[0005] In a first aspect, embodiments of the present invention provide a processing box for use in an image forming apparatus, the processing box comprising: a housing, the housing including a toner hopper for storing toner; a developing roller mounted on the housing and located at the outlet of the toner hopper; a doctor blade mounted on the housing and in contact with the outer peripheral surface of the developing roller; and a toner-blocking member mounted on the housing, the toner-blocking member covering at least a portion of the doctor blade, the toner-blocking member having a bent structure and surrounding the contact position between the doctor blade and the developing roller.

[0006] According to the foregoing embodiment of the first aspect of the present invention, the powder blocking component includes a first blocking part and a second blocking part connected to each other at a preset angle; the housing also includes an end-side mounting part, the end-side mounting part being located at opposite ends of the developing roller along the axial direction, the end-side mounting part being provided with a locking interface, and the two ends of the first blocking part being able to be locked with the locking interface.

[0007] According to any of the foregoing embodiments of the first aspect of the present invention, the card interface includes a first abutting surface extending in a straight line and a first protrusion protruding relative to the first abutting surface, the first blocking portion has a first surface facing the scraper, the first surfaces at both ends of the first blocking portion abut against the first abutting surface, and the edge of the first blocking portion away from the second blocking portion abuts against the first protrusion.

[0008] According to any of the foregoing embodiments of the first aspect of the present invention, the first protrusion and the first abutting surface have an included angle of 30° to 50°.

[0009] According to any of the foregoing embodiments of the first aspect of the present invention, the processing box further includes: a mounting bracket, which is detachably connected to the end-side mounting portion, the mounting bracket being provided with a limiting groove, and both ends of the first blocking portion being inserted into the limiting groove.

[0010] According to any of the foregoing embodiments of the first aspect of this utility model, the limiting groove is connected to the card interface, and one side wall of the limiting groove is flush with the first abutting surface.

[0011] According to any of the foregoing embodiments of the first aspect of this utility model, the processing box further includes: a side cover, detachably connected to the housing, the side cover covering the mounting bracket.

[0012] According to any of the foregoing embodiments of the first aspect of the present invention, the side cover includes a covering portion, which covers both ends of the first blocking portion and both ends of the second blocking portion.

[0013] According to any of the foregoing embodiments of the first aspect of the present invention, the powder blocking member further includes a connecting protrusion extending outward from the end face of the top of the second blocking part, and the side cover has a connecting groove on the surface facing the powder blocking member, and the connecting protrusion is inserted into the connecting groove.

[0014] In a second aspect, embodiments of the present invention provide an image forming apparatus, which includes a processing box according to any of the foregoing embodiments of the first aspect of the present invention.

[0015] According to an embodiment of this utility model, the processing box includes a housing, a developing roller, a doctor blade, and a powder-blocking component. The doctor blade is mounted on the housing and contacts the outer circumferential surface of the developing roller. The doctor blade can smooth the toner on the developing roller, ensuring uniform toner coverage. The powder-blocking component covers at least part of the doctor blade. The powder-blocking component has a bent structure and surrounds the contact position between the doctor blade and the developing roller. The powder-blocking component can block the leakage path of toner, so that the outlet size of the powder hopper only needs to ensure that sufficient toner can adhere to the developing roller during operation, without needing to reduce the outlet size of the powder hopper. The powder-blocking component can significantly alleviate the problem of toner leakage, thereby ensuring that more toner can adhere to the developing roller while preventing excessive toner leakage from the processing box. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a perspective view of an embodiment of the processing box of this utility model;

[0018] Figure 2 This is a three-dimensional exploded view of one embodiment of the processing box of this utility model;

[0019] Figure 3 This is another perspective exploded view of an embodiment of the processing box of this utility model;

[0020] Figure 4 for Figure 2 A magnified view of a portion of region A in the middle;

[0021] Figure 5 for Figure 3 A magnified view of a portion of region B in the middle;

[0022] Figure 6 This is a three-dimensional schematic diagram of the powder-blocking component in one embodiment of the processing box of this utility model;

[0023] Figure 7 This is a perspective view of the side cover in one embodiment of the processing box of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100 - Housing; 110 - Powder hopper; 120 - End-side mounting part; 121 - Snap-in interface; 1211 - First contact surface; 1212 - First protrusion;

[0026] 200 - Developing roller;

[0027] 300-scraper;

[0028] 400 - Powder blocking component; 410 - First blocking part; S1 - First surface; S2 - Second surface; 420 - Second blocking part; S3 - Third surface; S4 - Fourth surface; 430 - Connecting protrusion;

[0029] 500 - Mounting bracket; 510 - Limiting groove;

[0030] 600 - Side cover; 610 - Cover part; 620 - Connecting groove.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] This utility model provides a processing box for use in an image forming apparatus, such as a laser printer. Figure 1 This is a perspective view of an embodiment of the processing box of this utility model. Figure 2 , Figure 3 This is a three-dimensional exploded view of an embodiment of the processing box of this utility model. The processing box includes a housing 100, a developing roller 200, a doctor blade 300, and a powder blocking component 400. Figure 4 for Figure 2 A magnified view of a portion of region A in the middle. Figure 5 for Figure 3 A magnified view of a portion of region B in the middle.

[0036] Housing 100 includes a toner hopper 110 for storing toner. A developing roller 200 is mounted on housing 100 and located at the outlet of the toner hopper 110. A doctor blade 300 is mounted on housing 100 and contacts the outer peripheral surface of the developing roller 200. A toner baffle 400 is mounted on housing 100, covering at least a portion of the doctor blade 300, and has a bent structure surrounding the contact point between the doctor blade 300 and the developing roller 200.

[0037] According to an embodiment of the present invention, the processing box includes a housing 100, a developing roller 200, a scraper 300, and a powder-blocking component 400. The scraper 300 is mounted on the housing 100 and contacts the outer peripheral surface of the developing roller 200. The scraper 300 can scrape the toner on the developing roller 200 evenly, ensuring uniform toner coverage. The powder-blocking component 400 covers at least a portion of the scraper 300. The powder-blocking component 400 has a bent structure and surrounds the contact point between the scraper 300 and the developing roller 200. The powder-blocking component 400 can block the leakage path of toner, ensuring that the outlet size of the powder hopper 110 only needs to be sufficient to allow enough toner to adhere to the developing roller 200 during operation. There is no need to reduce the size of the outlet of the powder hopper 110. The powder-blocking component 400 significantly alleviates the problem of toner leakage, thereby ensuring that the developing roller 200 can adhere a large amount of toner while preventing excessive toner leakage from the processing box.

[0038] Figure 6 This is a perspective view of a powder-blocking component in one embodiment of the processing box of this utility model. In some embodiments, the powder-blocking component 400 includes a first blocking portion 410 and a second blocking portion 420 connected to each other at a preset angle. In this embodiment, the first blocking portion 410 and the second blocking portion 420 are connected to each other at a right angle.

[0039] like Figure 3 , Figure 5 In some embodiments, the housing 100 further includes an end-side mounting portion 120, which is located at opposite ends of the developing roller 200 along the axial direction. The end-side mounting portion 120 is provided with a locking interface 121, and both ends of the first blocking portion 410 can be locked with the locking interface 121.

[0040] In the above embodiment, the end mounting portion 120 of the housing 100 is provided with a card interface 121, and both ends of the first blocking portion 410 can be locked with the card interface 121, so that during the assembly process of the processing box, the card interface 121 can perform preliminary positioning of the powder blocking component 400, which facilitates the rapid installation of the powder blocking component 400.

[0041] In this embodiment, the connection structures at both ends of the powder-blocking component 400 are similar. This article mainly uses the connection structure at one end as an example for detailed description, while the connection structure at the other end is similar.

[0042] like Figure 5 In some embodiments, the card interface 121 includes a straight-extending first abutment surface 1211 and a first protrusion 1212 that protrudes relative to the first abutment surface 1211. The first blocking portion 410 has a first surface S1 facing the scraper 300. The first surfaces S1 at both ends of the first blocking portion 410 abut against the first abutment surface 1211, and the edge of the first blocking portion 410 away from the second blocking portion 420 abuts against the first protrusion 1212.

[0043] In this embodiment, the first blocking part 410 has a first surface S1 facing the scraper 300 and a second surface S2 away from the scraper 300, and the second blocking part 420 has a third surface S3 facing the scraper 300 and a fourth surface S4 away from the scraper 300.

[0044] In some embodiments, the first protrusion 1212 and the first abutment surface 1211 have an included angle of 30° to 50°.

[0045] In the above embodiment, the card interface 121 includes a straight-extending first abutment surface 1211 and a first protrusion 1212 that protrudes relative to the first abutment surface 1211. The first abutment surface 1211 and the first protrusion 1212 can jointly play a certain role in limiting and positioning the first blocking part 410 of the powder blocking member 400, thereby achieving the initial positioning of the powder blocking member 400.

[0046] like Figures 2 to 4 In some embodiments, the processing box further includes a mounting bracket 500, which is detachably connected to the end mounting portion 120. The mounting bracket 500 is provided with a limiting groove 510, and the two ends of the first blocking portion 410 are inserted into the limiting groove 510.

[0047] In some embodiments, the limiting groove 510 is connected to the card interface 121, and one sidewall of the limiting groove 510 is flush with the first abutment surface 1211.

[0048] In the above embodiments, the processing box also includes a mounting bracket 500, which is provided with a limiting groove 510. The limiting groove 510 can further limit and position the powder blocking component 400, restrict the forward and backward movement of the powder blocking component 400 in a specific direction, and ensure the accuracy of the position of the powder blocking component 400.

[0049] like Figures 1 to 3 In some embodiments, the processing box further includes a side cover 600, which is detachably connected to the housing 100 and covers the mounting bracket 500.

[0050] Figure 7This is a perspective view of the side cover in one embodiment of the processing box of this utility model. In some embodiments, the side cover 600 includes a covering portion 610, which covers both ends of the first blocking portion 410 and both ends of the second blocking portion 420.

[0051] In this embodiment, the first blocking portion 410 has a first surface S1 facing the scraper 300 and a second surface S2 away from the scraper 300, and the second blocking portion 420 has a third surface S3 facing the scraper 300 and a fourth surface S4 away from the scraper 300. The covering portion 610 is provided to cover both ends of the first blocking portion 410 and both ends of the second blocking portion 420, that is, the covering portion 610 covers the second surface S2 of both ends of the first blocking portion 410 and the fourth surface S4 of both ends of the second blocking portion 420.

[0052] In the above embodiment, the processing box further includes a side cover 600, which includes a covering portion 610. The covering portion 610 covers both ends of the first blocking portion 410 and both ends of the second blocking portion 420, thereby restricting the up-and-down movement of the powder blocking member 400 in a specific direction and further ensuring the accuracy of the position of the powder blocking member 400.

[0053] like Figure 6 In some embodiments, the powder-blocking member 400 further includes a connecting protrusion 430 extending outward from the end face of the top of the second blocking portion 420. For example... Figure 7 In some embodiments, the side cover 600 has a connecting groove 620 on the surface facing the powder baffle 400, and the connecting protrusion 430 is inserted into the connecting groove 620.

[0054] In the above embodiments, the connecting protrusion 430 of the powder baffle 400 and the connecting groove 620 of the side cover 600 are inserted into each other, which can further improve the positional stability of the powder baffle 400 after assembly.

[0055] The processing cartridge may also include other known components and structures, such as a photosensitive drum and a charging roller. Both the photosensitive drum and the charging roller are housed in the housing 100. The charging roller charges the surface of the photosensitive drum to a certain potential. After exposure by a laser beam carrying image information, an electrostatic latent image is formed on the surface of the photosensitive drum. After development by the developing roller 200, the latent image is transformed into a visible toner image. When passing through the transfer area, under the electric field of the transfer electrodes, the toner is transferred onto the paper. Finally, after preheating and high-temperature hot-rolling fixing, text or images are fused onto the paper.

[0056] This application also provides an image forming apparatus including a processing cartridge of any of the foregoing embodiments. The processing cartridge includes a housing 100, a developing roller 200, a doctor blade 300, and a toner-blocking member 400. The housing 100 includes a toner hopper 110 for storing toner. The developing roller 200 is mounted on the housing 100 and located at the outlet of the toner hopper 110. The doctor blade 300 is mounted on the housing 100 and contacts the outer peripheral surface of the developing roller 200. The toner-blocking member 400 is mounted on the housing 100, covers at least a portion of the doctor blade 300, and has a bent structure surrounding the contact point between the doctor blade 300 and the developing roller 200.

[0057] An image forming apparatus according to an embodiment of the present invention includes a processing cartridge, which includes a housing 100, a developing roller 200, a doctor blade 300, and a toner-blocking component 400. The doctor blade 300 is mounted on the housing 100 and contacts the outer peripheral surface of the developing roller 200. The doctor blade 300 can scrape the toner on the developing roller 200 evenly, ensuring uniform toner coverage. The toner-blocking component 400 covers at least a portion of the doctor blade 300. The toner-blocking component 400 has a bent structure and surrounds the contact point between the doctor blade 300 and the developing roller 200. The toner-blocking component 400 can block the toner leakage path, so that the outlet size of the toner hopper 110 only needs to ensure that sufficient toner can adhere to the developing roller 200 during operation, without needing to reduce the outlet size of the toner hopper 110. The toner-blocking component 400 can significantly alleviate the toner leakage problem, thereby ensuring that the developing roller 200 can adhere to a large amount of toner while preventing excessive toner leakage from the processing cartridge.

[0058] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A processing box for use in an image forming apparatus, characterized in that, The processing box includes: A housing, the housing including a toner hopper for storing toner; A developing roller is installed in the housing and located at the outlet of the powder hopper; A scraper is mounted on the housing and contacts the outer peripheral surface of the developing roller; A powder-blocking element is installed in the housing, the powder-blocking element covers at least a portion of the doctor blade, the powder-blocking element has a bent structure, and surrounds the contact position between the doctor blade and the developing roller.

2. The processing box as described in claim 1, characterized in that, The powder-blocking component includes a first blocking part and a second blocking part connected to each other at a preset angle; The housing also includes an end-side mounting portion, which is located at opposite ends of the developing roller along the axial direction. The end-side mounting portion is provided with a locking interface, and both ends of the first blocking portion can be locked into the locking interface.

3. The processing box as described in claim 2, characterized in that, The card interface includes a straight, extended first abutting surface and a first protrusion protruding relative to the first abutting surface. The first blocking portion has a first surface facing the scraper. The first surfaces at both ends of the first blocking portion abut against the first abutting surface, and the edge of the first blocking portion away from the second blocking portion abuts against the first protrusion.

4. The processing box as described in claim 3, characterized in that, The first protrusion has an angle of 30° to 50° with the first abutting surface.

5. The processing box as described in claim 3, characterized in that, Also includes: The mounting bracket is detachably connected to the end-side mounting portion. The mounting bracket is provided with a limiting groove, and both ends of the first blocking portion are inserted into the limiting groove.

6. The processing box as described in claim 5, characterized in that, The limiting groove is connected to the card interface, and one side wall of the limiting groove is flush with the first abutment surface.

7. The processing box as described in claim 5, characterized in that, Also includes: A side cover is detachably connected to the housing and covers the mounting bracket.

8. The processing box as described in claim 7, characterized in that, The side cover includes a covering portion that covers both ends of the first blocking portion and both ends of the second blocking portion.

9. The processing box as described in claim 7, characterized in that, The powder-blocking component also includes a connecting protrusion extending outward from the end face of the top of the second blocking part, and the side cover has a connecting groove on the surface facing the powder-blocking component, and the connecting protrusion is inserted into the connecting groove.

10. An image forming apparatus, characterized in that, Includes the processing box as described in any one of claims 1 to 9.

Images