Fixing roller structure

Abstract

The utility model discloses a fixing roller structure, including fixing roller and mounting seat, its characterized in that, the mounting seat designs and has the axle hole with fixing roller and the gasket and carries out the movable assembly through bearing, fixing roller is the metal roller that has the fixing film function layer solidified to the outer surface, fixing film function layer and metal roller still between the setting have the base coat, the base coat is the metal ceramic material of aluminium oxide or nickel chromium alloy and forms through plasma spraying process, and fixing film function layer is formed on the base coat. The utility model discloses through fixing film and fixing roller and make integral type to avoid the problem, such as deviation, easy wrinkle, rupture and paper jam, etc. that the film type fixing film of the previous set appears, and it can also realize the fast heat response, because the fixing film that sprays and forms is close to the fixing roller made of metal, in addition, because the base of hard coating, fixing film function layer can resist physical damage, that is, resistant to paper edge scraping, not easy to break.

Description

Technical Field

[0001] This utility model belongs to the field of printing equipment technology, and in particular relates to a fixing roller structure. Background Technology

[0002] With the development of technology, printers and copiers are commonly used office equipment, and their fast printing or copying speed makes them increasingly popular. The fuser roller is a key component of the fuser section of a printer or copier, used to apply pressure and fix the copied toner image in a high-temperature environment.

[0003] However, in the existing technology, some fuser films are fitted outside the fuser roller. Although such a structure is equipped with pressure rollers to tension and pressurize the fuser film to ensure the working effect, the fuser film, which rotates continuously during operation, will inevitably experience displacement and deviation, which will lead to problems such as friction noise, deformation and wrinkling, wear and cracking, uneven heating and poor fixing, and paper jams.

[0004] Therefore, it is necessary to develop a fixing roller structure that can prevent the fixing film from deviating from its original position in order to address the above problems. Utility Model Content

[0005] To solve the above problems, the present invention adopts the following technical solution: A fixing roller structure includes a fixing roller and a mounting base, characterized in that the mounting base is designed and formed with a shaft hole for the fixing roller to be movably assembled via bearings and gaskets; the fixing roller is a metal roller with a fixing film functional layer cured on its outer surface; an underlayer is also provided between the fixing film functional layer and the metal roller; the underlayer is a metal ceramic material of alumina or nickel-chromium alloy formed by plasma spraying, and the fixing film functional layer is formed on the underlayer.

[0006] Preferably, the shaft hole is designed and formed with a semi-open hole position.

[0007] Preferably, the fixing roller is designed with a hollow structure and has a through hole in the axial direction.

[0008] Preferably, the fixing film functional layer can be a Teflon composite material or a ceramic polymer hybrid coating, which is cured on a metal roller by plasma spraying or flame spraying.

[0009] Preferably, the coating thickness of the fixing film functional layer is in the range of 30 micrometers to 100 micrometers.

[0010] Compared with existing technologies, the advantages of this utility model are: This invention avoids the problems of misalignment, wrinkling, tearing, and paper jamming that occur with traditional film-type fusers by integrating the fuser film and fuser roller into one unit. It also achieves rapid thermal response because the spray-coated fuser film adheres tightly to the metal fuser roller. Furthermore, the hard coating makes the fuser film's functional layer resistant to physical damage, i.e., resistant to scratches from paper edges and not easily broken. Additionally, the change in the fuser roller structure leads to modifications in the mounting base. Compared to previous fuser roller assemblies, this invention achieves quick and stable assembly and disassembly through the locking mechanism of bearings and shaft holes, greatly improving efficiency while ensuring structural rationality. Attached Figure Description

[0011] Figure 1 This is an exploded view of the present invention.

[0012] Figure 2 This is an assembly drawing of the present utility model.

[0013] Figure 3 These are comparative diagrams of the embodiments. Detailed Implementation

[0014] 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.

[0015] like Figure 1 and Figure 2 As shown, this utility model is a fixing roller structure, which mainly consists of a fixing roller (1) and a mounting base (2), and its general structure is as follows: The mounting base (2) is designed and formed with a shaft hole (20) for the fixing roller (1) to be movably assembled through the bearing (3) and the gasket (4); the fixing roller (1) is a metal roller with a fixing film functional layer cured on its outer surface.

[0016] It should be noted that the purpose of this invention is to integrate the fixing film and the fixing roller into one unit to avoid problems such as deviation, wrinkling, cracking and paper jamming that occur with the previous film-type fixing film. Therefore, the fixing roller (1) is a metal roller with a fixing film functional layer cured on its outer surface. Before the fixing film functional layer is sprayed onto the surface of the metal roller, a base coat needs to be sprayed onto the metal roller. The base coat is formed by plasma spraying of metal ceramic materials such as alumina or nickel-chromium alloy. The fixing film functional layer is formed on the base coat. By setting the base coat, the physical bonding force between the substrate and the fixing film functional layer can be enhanced, and the difference in thermal expansion coefficient between the metal and the polymer coating can be alleviated to a certain extent, thereby preventing high-temperature cracking during heating in operation.

[0017] Further explanation regarding the fixing roller (1) is that the fixing roller (1) of this utility model is designed and formed with a hollow structure, and has a through hole (10) in the axial direction. The purpose is to be able to rotate during operation while cooperating with the bearings at both ends to ensure the process fixing and paper feeding.

[0018] Regarding the fixing film functional layer, it is a Teflon composite material or ceramic polymer mixed coating, which is cured on a metal roller by plasma spraying or flame spraying process. The coating thickness is in the range of 30 micrometers to 100 micrometers. It has non-stick, high temperature resistance and wear resistance properties, which can extend the working life of this utility model.

[0019] Furthermore, due to the change in the structure of the fixing roller (1), the mounting base (2) has also been modified. Compared to the previous assembly structure of the fixing roller, since the fixing roller (1) and the mounting base (2) are fixed in place by a bearing (3) and a shaft hole (20), the shaft hole (20) on the mounting base (2) has been changed to a semi-open hole design. This design is different from the previous one. Figure 3 The single-hole design of the traditional mounting base enables more convenient installation and disassembly while ensuring stable installation, thereby improving installation and disassembly efficiency while ensuring the rationality of the structure.

[0020] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.

Claims

1. A fixing roller structure, comprising a fixing roller (1) and a mounting base (2), characterized in that, The mounting base (2) is designed and formed with a shaft hole (20) for the fixing roller (1) to be movably assembled through the bearing (3) and the gasket (4); the fixing roller (1) is a metal roller with a fixing film functional layer cured on its outer surface; a base layer is also provided between the fixing film functional layer and the metal roller; the base layer is a metal ceramic material of alumina or nickel-chromium alloy formed by plasma spraying process, and the fixing film functional layer is formed on the base layer.

2. The fixing roller structure according to claim 1, characterized in that, The shaft hole (20) is designed and formed as a semi-open hole.

3. The fixing roller structure according to claim 1, characterized in that, The fixing roller (1) is designed with a hollow structure and has a through hole (10) in the axial direction.

4. The fixing roller structure according to claim 1, characterized in that, The fixing film functional layer can be a Teflon composite material or a ceramic polymer hybrid coating, which is cured on a metal roller by plasma spraying or flame spraying.

5. The fixing roller structure according to claim 1, characterized in that, The coating thickness of the fixing film functional layer is in the range of 30 micrometers to 100 micrometers.

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