Charging roller of laser printer

Abstract

The utility model relates to a charging roller of a laser printer. The charging roller comprises a printer shell, a charging roller body arranged in the printer shell and a wiping plate for cleaning the charging roller body. A pressing assembly for pressing the wiping surface of the wiping plate on the charging roller is arranged on the inner wall of the printer shell; supporting rods are fixedly arranged on the two side walls, opposite to the two ends of the charging roller, of the printer shell, and the supporting rods are in fixed-axis rotating connection with a rotating shaft of the charging roller. The two ends of the erasing plate are arranged at the ends, away from the rotating shaft, of the two supporting rods correspondingly, receding grooves for receding the erasing plate are formed in the contact faces of the supporting rods and the erasing plate, and reset pieces for resetting the erasing plate are arranged in the receding grooves. The charging roller provided by the utility model is provided with the wiping plate assembly to wipe the charging roller, so that the cleaning degree of the charging roller is effectively ensured, and the charging roller has better practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser printer technical field, especially a kind of charging roller of laser printer. BACKGROUND

[0002] With the popularization of digital office, laser printer has become an indispensable part in office equipment.Charging roller is a kind of cylinder composed of metal core and conductive rubber, which is set in laser printer, and its main function is to make the surface of photosensitive drum carry uniform negative charge, so that it can adsorb carbon powder to form image in subsequent printing process and form latent image under laser irradiation, and then adsorb carbon powder to complete printing.However, during long-term use of laser printer, impurities such as carbon powder and dust will gradually accumulate in the charging roller inside, which not only leads to the decline of printing quality, such as bottom ash, stripe, blurred handwriting and other problems, but also affects the service life of printer.

[0003] However, in the prior art, the cleaning method of charging roller is mainly manual cleaning, which requires users to disassemble the charging roller regularly and use special cleaning tools or cotton sheets for wiping, which is cumbersome and inconvenient for users.Therefore, a charging roller is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at the deficiency of prior art, and provides a kind of charging roller of laser printer, which can solve the above problems well.

[0005] To achieve the above requirements, the technical scheme adopted by the utility model to solve its technical problems is:

[0006] A kind of charging roller of laser printer is provided, including printer shell, charging roller arranged in printer shell, and cleaning plate for cleaning charging roller;The inner wall of printer shell is provided with pressing assembly for pressing the wiping surface of cleaning plate on charging roller;Two side walls, which are oppositely arranged at both ends of printer shell and charging roller, are both fixedly provided with support rod, and the rotation axis of support rod and charging roller is fixedly connected;That is, the rotation axis rotates, and the inner wall of printer shell is fixedly connected with support rod;Two ends of cleaning plate are arranged at one end of two support rods away from rotation axis, and the contact surface of support rod and cleaning plate is provided with avoiding slot for avoiding cleaning plate, and the avoiding slot is provided with reset member for resetting cleaning plate.

[0007] The utility model discloses a charging roller of laser printer, wherein, pressing assembly includes the pressure block and vertical first electric slide rail of setting, the upper side wall of printer housing is provided with the mounting block, and the mounting block is long strip shape and sets along the length direction of charging roller, the shell of first electric slide rail is transversely slid and is established on the mounting block, and the shell of first electric slide rail is provided with the sliding block, and the side wall of mounting block is equipped with the sliding slot of adapting with sliding block, and the sliding slot is long strip shape and sets along the length direction of mounting block, and the movable end of first electric slide rail sets up towards the pressure block and is fixedly connected with the pressure block.

[0008] The utility model discloses a charging roller of laser printer, wherein, the two wiping plates are oppositely arranged, and the wiping surfaces of the two wiping plates are arranged towards the charging roller, the lower end of the pressure block is arranged between the two wiping plates, the side wall opposite to the pressure block of the wiping plate is provided with a second electric slide rail in the horizontal direction, and the movable end of the second electric slide rail is fixedly connected with the side wall of the pressure block.

[0009] The utility model discloses a charging roller of laser printer, wherein, the lower surface of the pressure block and the lower surfaces of the two wiping plates jointly enclose an arc shape matching the external contour of the charging roller, and the bottom surface of the pressure block is fixedly provided with an electrode sheet.

[0010] The utility model discloses a charging roller of laser printer, wherein, the bottom surface of the pressure block is provided with a detection member for detecting whether carbon powder is accumulated, when the detection member detects that carbon powder is accumulated on the charging roller and needs to be cleaned, the first electric slide rail drives the pressure block to press down, at this time, the pressure block drives the wiping plate to lower, the compression spring, the pressure block and the wiping plate are in contact with the outer side wall of the charging roller at the same time, and the electrode sheet on the lower surface of the pressure block is also in contact with the charging roller, so that the wiping plate plays a cleaning role on the charging roller.

[0011] The utility model discloses a charging roller of laser printer, wherein, the side wall of the wiping plate towards the charging roller is fixedly provided with a cleaning cotton sheet, the cleaning cotton sheet is relatively soft in texture, can effectively clean the charging roller, and can also protect the charging roller from being scratched.

[0012] The utility model discloses a beneficial effect lies in: through setting up the wiping board and pressing subassembly in the printer shell, realized the automatic cleaning function of charging roller, need not user manual dismounting and cleaning, improved the convenience and efficiency of cleaning greatly, reduced the workload and operation difficulty of user, promoted the user experience. Wiping board can be automatic reset under the action of reset piece, guaranteed the consistency and effect of each time cleaning, effectively removed the carbon powder and dust and other impurities on the surface of charging roller, thereby improved the printing quality significantly, reduced the emergence of the problem such as bottom ash, stripe, handwriting blur. The reasonable layout and design of cleaning device, such as the fixed shaft rotary connection of support rod and pivot and the setting of avoidance groove, ensure the stability and reliability of whole device, will not produce the interference to the normal operation of printer, also help to prolong the service life of printer, reduce maintenance cost and equipment loss, have higher practical value and market popularization potential. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will be combined with the drawings and embodiment to the utility model make further explanation, the following description in the drawings is only part of the embodiment of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings:

[0014] Fig. 1 It is the front view of the charging roller of a laser printer of the utility model.

[0015] Fig. 2 It is the side view of the pressing block and wiping board in the charging roller of a laser printer of the utility model.

[0016] Fig. 3 It is the bottom view of the pressing block and wiping board in the charging roller of a laser printer of the utility model.

[0017] In the drawing, 1, printer shell;10, mounting block;11, sliding groove;2, charging roller;20, pivot;3, wiping board;30, wiping surface;31, second electric slide rail;32, cleaning cotton sheet;4, support rod;40, avoidance groove;41, reset piece;5, pressing subassembly;50, pressing block;51, first electric slide rail;52, electrode sheet;53, detection piece. DETAILED DESCRIPTION

[0018] The terms "first", "second", "third", and "fourth" and the like in the description and claims of the present document are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprising", "including", "containing", and "having" and their conjugates, as used herein, are inclusive and are intended to permit the inclusion of the listed elements, as well as additional elements, without precluding any of the listed elements. For example, a process, method, article, or apparatus that comprises, has or includes an element, without excluding any of the listed elements, can also include additional elements, whether or not the additional elements are listed.

[0019] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase that an embodiment in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with one another.

[0020] "Multiple" means two or more. "And / or", describing the relationship between the associated objects, means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B exist at the same time, and B alone. The character " / " generally represents that the associated objects before and after are a "or" relationship.

[0021] Furthermore, the terms "upper", "lower", "left", "right", "top", "bottom", "vertical", and the like, which indicate the orientation of the device or equipment described in the present application, are based on the attitude position of the device or equipment in normal use.

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0023] A charging roller of a laser printer according to a preferred embodiment of the present application is shown in Figs. 1-3As shown, it comprises a printer shell 1, a charging roller 2 arranged in the printer shell 1, and a wiper plate 3 for cleaning the charging roller 2; the inner wall of the printer shell 1 is provided with a pressing assembly 5 for pressing the wiping surface 30 of the wiper plate 3 on the charging roller 2; the two side walls of the printer shell 1 opposite to the two ends of the charging roller 2 are both fixedly provided with a support rod 4, and the support rod 4 is fixedly connected with the rotating shaft 20 of the charging roller 2; that is, the rotating shaft 20 rotates, and the support rod 4 is fixedly connected with the inner wall of the printer shell 1; the two ends of the wiper plate 3 are respectively arranged at the ends of the two support rods 4 away from the rotating shaft 20, and the contact surface of the support rod 4 is provided with an avoiding groove 40 for avoiding the wiper plate 3, and the avoiding groove 40 is provided with a reset member 41 for resetting the wiper plate 3.

[0024] In this embodiment, the pressing assembly 5 comprises a pressing block 50 and a first electric sliding rail 51 arranged vertically; the upper side wall of the printer shell 1 is provided with a mounting block 10 protruding therefrom, and the mounting block 10 is in a strip shape and arranged along the length direction of the charging roller 2; the outer shell of the first electric sliding rail 51 is transversely slidably arranged on the mounting block 10, and the outer shell of the first electric sliding rail 51 is provided with a sliding block protruding therefrom; the side wall of the mounting block 10 is provided with a sliding groove 11 matched with the sliding block, and the sliding groove 11 is in a strip shape and arranged along the length direction of the mounting block 10; the movable end of the first electric sliding rail 51 is arranged towards the pressing block 50 and fixedly connected with the pressing block 50.

[0025] In this embodiment, the wiper plate 3 is provided with two wiper plates arranged opposite to each other, and the wiping surface 30 of the wiper plate 3 is arranged towards the charging roller 2; the lower end of the pressing block 50 is arranged between the two wiper plates 3, and the side wall opposite to the wiper plate 3 of the pressing block 50 is provided with a second electric sliding rail 31 arranged in a horizontal direction; the movable end of the second electric sliding rail 31 is fixedly connected with the side wall of the pressing block 50.

[0026] In this embodiment, the lower surface of the pressing block 50 and the lower surfaces of the two wiper plates 3 jointly enclose an arc shape matched with the external contour of the charging roller 2; and the bottom surface of the pressing block 50 is fixedly provided with an electrode sheet 52.

[0027] In the embodiment, the bottom surface of the pressing block 50 is provided with a detection member 53 for detecting whether carbon powder is accumulated. The detection member 53 is a magnetic induction sensor, which detects the accumulation of carbon powder on the charging roller by using the magnetism of the carbon powder. When carbon powder is accumulated on the charging roller, the strength of the surrounding magnetic field is changed. The magnetic induction sensor detects the change of the magnetic field and transmits a signal to an external controller electrically connected thereto. The controller drives the first electric slide rail 51 to lower the pressing block. When the detection member 53 detects that carbon powder is accumulated on the charging roller 2 and needs to be cleaned, the first electric slide rail 51 drives the pressing block 50 to lower. At this time, the pressing block 50 drives the cleaning plate 3 to lower, the compression spring is compressed, and the pressing block 50 and the cleaning plate 3 are in contact with the outer side wall of the charging roller 2. The electrode sheet 52 on the lower surface of the pressing block 50 is also in contact with the charging roller 2. Not only the cleaning plate 3 can clean the charging roller 2, but also the contact between the electrode sheet 52 and the charging roller 2 can guide the excess charge on the charging roller 2, thereby ensuring the uniform distribution of the surface charge of the charging roller.

[0028] In the embodiment, the cleaning cotton sheet 32 is fixed on the side wall of the cleaning plate 3 facing the charging roller 2. The cleaning cotton sheet 32 is soft, which can effectively clean the charging roller 2 and protect the charging roller 2 from being scratched.

[0029] In the embodiment, the charging roller includes a rotating shaft and a roller body. The rotating shaft is made of iron, and the roller body is made of semi-conductive rubber. The charging roller composed of the semi-conductive rubber and the iron shaft is made of chloro ether, butyrin, and super-conductive material, which can significantly improve the stability of the charging roller in various environments.

[0030] It should be understood that those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes shall fall within the protection scope of the appended claims of the utility model.

Claims

1. A charging roller for a laser printer, characterized in that, The printer includes a printer housing, a charging roller disposed within the printer housing, and a cleaning plate for cleaning the charging roller. The inner wall of the printer housing is provided with a pressing assembly that presses the wiping surface of the cleaning plate onto the charging roller. Support rods are fixedly mounted on both side walls of the printer housing opposite to the two ends of the charging roller, and the support rods are rotatably connected to the rotating shaft of the charging roller. The cleaning plate has two ends respectively located at the ends of the two support rods away from the rotating shaft. A clearance groove is formed on the contact surface between the support rod and the cleaning plate to avoid the cleaning plate, and a reset component is provided within the clearance groove to reset the cleaning plate.

2. The charging roller of the laser printer according to claim 1, characterized in that, The pressing assembly includes a pressing block and a vertically arranged first electric slide rail; a mounting block is protruding on the upper side wall of the printer housing, the housing of the first electric slide rail is slidably mounted on the mounting block, and the movable end of the first electric slide rail is positioned towards the pressing block and fixedly connected to the pressing block.

3. The charging roller of the laser printer according to claim 2, characterized in that, There are two wiping plates arranged opposite each other. The lower end of the pressure block is located between the two wiping plates. A second electric slide rail is provided on the side wall of the wiping plate opposite to the pressure block in the horizontal direction. The movable end of the second electric slide rail is fixedly connected to the side wall of the pressure block.

4. The charging roller of the laser printer according to claim 3, characterized in that, The lower surface of the pressure block and the lower surfaces of the two wiping plates together form an arc shape that fits the outer contour of the charging roller; an electrode sheet is fixedly provided on the bottom surface of the pressure block.

5. The charging roller of the laser printer according to claim 2, characterized in that, The bottom surface of the pressing block is equipped with a detection element to detect whether there is carbon powder accumulation.

6. The charging roller of the laser printer according to claim 1, characterized in that, A cleaning cotton pad is fixed on the side wall of the wiping plate facing the charging roller.

7. The charging roller of the laser printer according to claim 1, characterized in that, The charging roller includes a rotating shaft and a roller body. The rotating shaft is made of iron, and the roller body is made of semi-conductive rubber.

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