Toner cartridge with developing roller

Abstract

The utility model relates to a selenium drum with a developing roller. The selenium drum comprises a box cover, a box body, an end cover, a charging roller, a photosensitive drum, the developing roller, a scraper and a powder feeding roller, in order to reduce the cost and the assembly difficulty and subsequently realize detachable maintenance, the developing roller and the selenium drum using the developing roller are designed and improved, and the selenium drum with low cost and high efficiency is obtained by improving the developing roller on the basis of ensuring stable installation and smooth rotation; the rollers are arranged in the symmetrically formed slotted holes, so that the roller core axes of the rollers can be parallel to the axes of the slotted holes and are arranged at intervals, and the rollers can be prevented from displacing and derailing on the basis of the design while the rollers can stably rotate in the working process. The powdered ink hung by the scraper can fall into the cavity through the second window, so that arrangement and storage are realized, long-time accumulation and blockage are prevented, and a stirring rod is further arranged in the cavity to prevent blockage.

Description

Technical Field

[0001] The utility model belongs to the technical field of imaging equipment, in particular to a toner cartridge with a developing roller. Background Art

[0002] Toner cartridges are the most important consumables for laser printers, and generally include photosensitive drums, powder bins, waste powder bins, cleaning blades, powder discharge blades, charging rollers, powder feed rollers, and developing rollers. The photosensitive drum is a cylinder with an organic material (selenium, a rare element) coated on the surface. It is pre-charged. When light is irradiated, the irradiated area will react with resistance. The data signal sent controls the emission of the laser, and the light scanning on the surface of the toner drum changes continuously, so that some areas are irradiated, the voltage becomes smaller, and the charge disappears, while some areas are not irradiated by light and still retain the charge; eventually, a latent image composed of charges is formed on the surface of the photosensitive drum. The toner charge has the opposite polarity to the charge on the surface of the photosensitive drum. When the charged toner drum surface passes through the magnetic roller, the charged area adsorbs the toner particles, thus turning the latent image into a real image.

[0003] In order to achieve stable installation and smooth rotation of the developing roller, the current toner cartridge has a relatively complex structure, which indirectly or directly increases the difficulty of assembly and production cost, reduces production efficiency, and is inconvenient for subsequent disassembly, maintenance, and replacement, resulting in increased cost of use. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model aims to provide a toner cartridge with a developing roller.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] A toner cartridge with a developing roller comprises a box cover, a box body, an end cover, a charging roller, a photosensitive drum, a developing roller, a scraper and a powder feeding roller, wherein the overall length of the developing roller is 258.50 mm to 259.50 mm, the diameter of the roller core is 5.90 mm to 6.10 mm, and the diameter of the part covered with rubber material is 11.90 mm to 12.10 mm, and both ends of the roller core of the developing roller have no step structure and inserted small shaft; the charging roller, photosensitive drum, developing roller, scraper and powder feeding roller are all arranged in a box cavity formed by the box body and the box cover; the box body and the box cover are fastened and assembled by screws, and end covers are also arranged at both ends of the box body to cover the transmission gear set, the developing roller, the photosensitive drum and the powder feeding roller; the box body is integrally formed with a chamber, and a first window equipped with a first cover plug is opened on the side of the chamber; the two ends of the charging roller are assembled by embedding elastic fittings.

[0007] Preferably, a hole is provided on the box cover, and the hole is equipped with a second cover plug.

[0008] Preferably, multiple slots are provided on both sides of the box body equipped with the end cover to position and assemble the photosensitive drum, developing roller, powder feeding roller and stirring rod, and one side is equipped with a transmission gear set to allow the developing roller, photosensitive drum, stirring roller and powder feeding roller to mesh and be movably connected.

[0009] Preferably, the bottom of the box cover is symmetrically formed with an assembly groove for installing a charging roller equipped with an elastic fitting, so that the installation position of the charging roller can be located above the photosensitive drum in the box body.

[0010] Preferably, a developing roller and a powder feeding roller are arranged in sequence obliquely below the photosensitive drum. In the circumferential rotation direction of the developing roller, the photosensitive drum, the powder feeding roller and the scraper are all in contact with it.

[0011] Preferably, the assembly position of the scraper is located above the chamber in the box body cavity, and the chamber is provided with a second window with the same length as the scraper, and the second window is located directly below the scraper.

[0012] Preferably, the assembly groove is designed to protrude from the bottom of the box cover, and the box body matched with it is correspondingly formed with a positioning groove to assist in its positioning during assembly.

[0013] Preferably, the embedded elastic fitting is composed of a clamping piece and a return spring, and the assembly opening of the clamping piece is a groove designed and formed for the superior arc, which performs interference fit and clamping fixation on the roller core of the charging roller.

[0014] Preferably, the stirring rod is transversely arranged in the chamber, and is sleeved and fixed or integrally formed with fan blades.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] 1. In order to reduce costs, assembly difficulty and subsequent detachable maintenance, the utility model has made design improvements to the developing roller and the toner cartridge using the developing roller. On the basis of ensuring stable installation and smooth rotation, a low-cost and high-efficiency toner cartridge is obtained by improving the developing roller. The most significant improvement of the developing roller is the size and roller core. The shorter size can reduce costs, and in order to work with it, other components in the toner cartridge are reduced proportionally within a range value to ensure that costs are reduced and controlled while the paper will not be unable to print normally due to the shortened length.

[0017] 2. The utility model ensures stability and durability by designing structural details. For example, a plurality of slots are formed on the box body, and each roller is arranged in the symmetrically formed slot, so that the roller core axis of each roller can be parallel to the axis of the slot and arranged at intervals. Such a design can ensure that each roller can rotate stably during work, and can also avoid displacement and derailment of each roller based on this design, so that each roller can work by being tangent and contacting each other within the set distance, and each roller set in the slot can be replaced individually when needed, which can avoid the need to replace the toner cartridge as a whole and achieve cost savings.

[0018] 3. In the utility model, the toner scraped off by the scraper can fall into the chamber through the second window to achieve sorting and storage, and prevent long-term accumulation and clogging. The chamber is also equipped with a stirring stick, and can be equipped with fan blades to stir the toner scraped off by the scraper to prevent it from clogging the second window and causing a large amount of toner to leak out. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an exploded view of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 It is a partial enlarged assembly schematic diagram of the utility model;

[0022] Figure 4 It is a partial assembly schematic diagram of the utility model. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 4As shown, the utility model is a toner cartridge with a developing roller, the toner cartridge is composed of a box cover (1), a box body (2), an end cover (3), a charging roller (4), a photosensitive drum (5), a developing roller (6), a scraper (7), a powder feeding roller (8), a transmission gear set (9) and a stirring rod (111), wherein the developing roller (6) has been improved in design, specifically, its overall length is 258.50mm-259.50mm, the diameter of the roller core is 5.90mm-6.10mm, and the diameter of the part covered with rubber material is 11.90mm-12.10mm, and both ends of the roller core (60) have no step structure and inserted small shaft. The charging roller (4), photosensitive drum (5), developing roller (6), scraper (7) and powder feeding roller (8) are all arranged in a box cavity formed by a box body (2) and a box cover (1). In the circumferential rotation direction of the developing roller (6), the photosensitive drum (5), the powder feeding roller (8) and the scraper (7) are in contact with it. A plurality of slots (22) are symmetrically provided on both sides of the box body to position and assemble the photosensitive drum (5), the developing roller (6), the powder feeding roller (8) and the stirring rod (111). Such a design enables the roller core axis of each roller to be parallel to the axis of the slot and to be arranged at intervals. Such a design can ensure that each roller can rotate stably during operation, and can also avoid displacement and derailment of each roller based on this design, so that each roller can work in a tangent and contacting manner within the set distance, and each roller arranged in the slot (22) can be replaced individually when replacement is needed. , which can avoid the need to replace the toner cartridge as a whole, thereby achieving cost savings. It should be noted that a transmission gear set (9) is sleeved on one side of the box body (2) to allow the developing roller (6), the photosensitive drum (5), the stirring rod (111) and the powder feeding roller (8) to mesh with each other for active connection. Specifically, each roller is equipped with a gear to mesh with each other. The box body (2) is also equipped with an end cover (3) to cover the transmission gear set (9), the developing roller (6), the photosensitive drum (5) and the powder feeding roller (8) to protect the fragile gears and the rollers that perform the main work. The box body (2), the box cover (1) and the end cover (3) are all connected and fixed to each other using screws.

[0025] It can be further explained that the box body (2) is integrally formed with a chamber (20), and the two sides of the chamber (20) are respectively provided with a first window (21) and a slot (22) equipped with a first cover plug (210), and the stirring rod (111) is arranged in the chamber (20), which can be fixedly mounted or integrally formed with a fan blade to stir the toner scraped off by the scraper (7), and the toner is generated by the scraper (7) scraping the developing roller (6), and can fall into the chamber (20) through a second window (201) opened on the chamber (20), and the chamber (20) is designed to collect and organize the toner to prevent toner leakage from affecting normal photocopying work, and by further arranging the stirring rod (111), it is possible to prevent toner from clogging the second window (201) and preventing a large amount of toner from leaking out, and the stirring rod (111) is driven to rotate by a gear, and can achieve efficient and stable operation without arranging an independent drive, which can significantly improve the service life of the utility model.

[0026] It is also worth mentioning that the two ends of the charging roller (4) are assembled on the bottom of the box cover (1) by embedding elastic fittings (10), wherein the bottom of the box cover (1) is designed and formed with an assembly groove (101) protruding from the bottom of the box cover (1), and the embedded elastic fittings (10) are arranged in the assembly groove (101), thereby achieving the fixing of the installation position of the charging roller (4). It can be noted that the design of the box body (2) corresponding to the assembly groove (101) is also formed with a concave positioning groove (200) for relative assembly, and such a structural design can play a role in assisting the positioning and fixing of the box cover (1) and the box body (2) when they are assembled. The embedded elastic fitting (10) is composed of a snap-fitting part (102) and a return spring (103). The assembly opening of the snap-fitting part (102) is a groove designed for the superior arc, which is interference-fitted and snap-fitted to the roller core (60) of the charging roller (4). Such a design is simple and stable, and can also be manually assembled and disassembled when the charging roller (4) needs to be replaced, thereby achieving the purpose of convenient maintenance and quick assembly and disassembly.

[0027] It is worth emphasizing that, in order to reduce costs, assembly difficulty and subsequent detachable maintenance, the present invention has improved the design of the developing roller (6) and the toner cartridge using the developing roller. On the basis of ensuring stable installation and smooth rotation, a low-cost and high-efficiency toner cartridge is obtained by improving the developing roller (6). The most significant improvement of the developing roller is the size and roller core (60). The shorter size can reduce costs, and in order to work with it, other components in the toner cartridge are reduced in proportion within a range value, thereby ensuring that costs are reduced and controlled while not causing the paper to be unable to print normally due to the shortened length. The details of each structure make the present invention stable and durable.

[0028] The utility model has a simple and reasonable structure. By designing symmetrical and reasonably spaced slots (22), it is ensured that each roller can be stably assembled and can also be taken out and replaced separately, thereby achieving maintainability and repair, avoiding the high cost of discarding the entire toner cartridge when a single component is damaged. In addition, considering the partial adaptation problem of the photocopier, the size of the developing roller (6) and other components is modified to meet some usage requirements.

[0029] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description of reference terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more schemes or examples.

Claims

1. A toner cartridge with a developing roller, characterized in that: The invention comprises a box cover (1), a box body (2), an end cover (3), a charging roller (4), a photosensitive drum (5), a developing roller (6), a scraper (7) and a powder feeding roller (8); the developing roller (6) has an overall length of 258.50 mm to 259.50 mm, a roller core diameter of 5.90 mm to 6.10 mm, and a diameter of a portion covered with rubber material of 11.90 mm to 12.10 mm; both ends of the roller core (60) of the developing roller (6) have no step structure or inserted small shaft; the charging roller (4), the photosensitive drum (5), the developing roller (6), the scraper (7) and the powder feeding roller (8) are provided with a plurality of rollers. 7) and a powder feeding roller (8) are both arranged in a box cavity formed by a box body (2) and a box cover (1); the box body (2) and the box cover (1) are fastened together by screws, and end covers (3) are also arranged at both ends of the box body (2) to cover the transmission gear set (9), the developing roller (6), the photosensitive drum (5) and the powder feeding roller (8); the box body (2) is integrally formed with a chamber (20), and a first window (21) equipped with a first cover plug (210) is opened on the side of the chamber (20); the two ends of the charging roller (4) are assembled by embedding elastic fittings (10).

2. A toner cartridge with a developing roller according to claim 1, characterized in that: The box cover (1) is provided with a hole, and the hole is equipped with a second cover plug (110).

3. A toner cartridge with a developing roller according to claim 1, characterized in that: Both sides of the box body (2) equipped with the end cover (3) are provided with a plurality of slots (22) for positioning and assembling the photosensitive drum (5), the developing roller (6), the powder feeding roller (8) and the stirring roller (111), and one side is provided with a transmission gear set (9) to allow the developing roller (6), the photosensitive drum (5), the stirring roller (111) and the powder feeding roller (8) to mesh with each other and be movably connected.

4. A toner cartridge with a developing roller according to claim 1, characterized in that: The bottom of the box cover (1) is symmetrically formed with an assembly groove (101) for installing a charging roller (4) equipped with an elastic fitting (10), so that the installation position of the charging roller (4) can be located above the photosensitive drum (5) in the box body (2).

5. A toner cartridge with a developing roller according to claim 1, characterized in that: The developing roller (6) and the powder feeding roller (8) are arranged in sequence obliquely below the photosensitive drum (5). In the circumferential rotation direction of the developing roller (6), the photosensitive drum (5), the powder feeding roller (8) and the scraper (7) are all in contact with it.

6. A toner cartridge with a developing roller according to claim 5, characterized in that: The assembly position of the scraper (7) is located above the chamber (20) in the cavity of the box body (2). The chamber (20) is provided with a second window (201) of the same length as the scraper (7). The second window (201) is located directly below the scraper (7).

7. A toner cartridge with a developing roller according to claim 4, characterized in that: The assembly groove (101) is designed to protrude from the bottom of the box cover (1), and the box body (2) matched therewith is correspondingly formed with a positioning groove (200) to assist in the positioning of the assembly.

8. A toner cartridge with a developing roller according to claim 1, characterized in that: The embedded elastic fitting (10) is composed of a clamping piece (102) and a return spring (103). The assembly opening of the clamping piece (102) is a groove designed for the superior arc, which performs interference fit and clamping fixation on the roller core (60) of the charging roller (4).

9. A toner cartridge with a developing roller according to claim 3, characterized in that: The stirring rod (111) is transversely arranged in the chamber (20), and is sleeved and fixed or integrally formed with a fan blade.

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