CN212845063U - Laser printer's LSU foreign matter detects structure - Google Patents
Laser printer's LSU foreign matter detects structure Download PDFInfo
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- CN212845063U CN212845063U CN202020563188.1U CN202020563188U CN212845063U CN 212845063 U CN212845063 U CN 212845063U CN 202020563188 U CN202020563188 U CN 202020563188U CN 212845063 U CN212845063 U CN 212845063U
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- foreign matter
- industrial camera
- polygon mirror
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Abstract
The utility model discloses a laser printer's LSU foreign matter detects structure, including LSU laser emitter, with laser emitter complex polygon mirror, the rotatory polygon mirror motor of drive polygon mirror, be used for acquireing polygon mirror reflected laser light's industry camera and the camera drive structure of connecting industry camera, camera drive structure drive industry camera is reciprocating motion in laser light's reflection scope. The utility model adopts the above structure, simple structure need not whether there is impurity by the naked eye observation, can be swift, in time detect the foreign matter.
Description
Technical Field
The utility model relates to a laser printer technical field, concretely relates to laser printer's LSU foreign matter detects structure (LSU: laser scanning unit).
Background
In the prior art, the diameter of a single laser spot of an LSU optical system is 60-80 um. In the production process, after foreign matters such as dust, fibers and the like enter the LSU, the foreign matters are difficult to find by naked eyes, but the foreign matters have adverse effects on the printing quality of the product. Since dust and fibers are difficult to be found and can be detected only by the actual printing effect, there are problems such as delay in finding, high rework cost, and the like. There is a need for an apparatus that can quickly and timely detect foreign objects.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to disclose a laser printer's LSU foreign matter detects structure, has solved current laser printer and has had foreign matters such as dust, fibre to get into the problem that is difficult to the discovery.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a laser printer's LSU foreign matter detects structure, includes LSU laser emitter, with laser emitter complex polygon mirror, the rotatory polygon mirror motor of drive polygon mirror, be used for acquireing polygon mirror reflected laser light's industry camera and the camera drive structure of connecting industry camera, camera drive structure drive industry camera is reciprocating motion in laser light's reflection scope.
Further, a motor shaft of the polygon prism motor is connected with the polygon prism through a gear structure, and the polygon prism is driven to rotate around the central axis of the polygon prism.
Further, the polygon mirror is a 5-prism.
Further, the industrial camera is located in a position to mate with the polygon mirror.
Further, camera drive structure includes the slide rail, with slide rail swing joint's slip table and the servo motor of being connected the slip table, industry camera connection slip table, servo motor drive slip table along the slide rail displacement, drive industry camera along the slide rail displacement simultaneously.
Further, the system also comprises an industrial control computer connected with the industrial camera and used for acquiring the image acquired by the industrial camera.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a camera drive structure drive industry camera is reciprocating motion in laser light's reflection scope, and industry camera is at the removal in-process, shoots in succession at a high speed. The industrial control computer collects images acquired by the industrial camera in real time, and forms a complete laser image covering all theoretical ranges of the photosensitive drum through software synthesis and comparison, and theoretically forms a straight line segment. If the middle of the line segment is broken, the LSU is indicated that foreign matters exist in the LSU to shield part of laser. By adopting the structure, the structure is simple, whether impurities exist or not can be observed by naked eyes, and foreign matters can be detected quickly and timely.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is the utility model relates to a laser printer's LSU foreign matter detects structure, the schematic diagram of embodiment.
In the figure, an LSU laser transmitter 1; a polygon mirror 2; an industrial camera 3; a camera driving structure 4; a slide rail 41; a slide table 42; a servo motor 43; an industrial control computer 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
An LSU foreign object detecting structure of a laser printer according to an embodiment shown in fig. 1 includes an LSU laser emitter 1, a polygon mirror 2 engaged with the laser emitter 1, a polygon mirror motor (not shown) for driving the polygon mirror 2 to rotate, an industrial camera 3 for acquiring laser light reflected by the polygon mirror 2, and a camera driving structure 4 connected to the industrial camera 3, wherein the camera driving structure 4 drives the industrial camera 3 to reciprocate within a reflection range of the laser light.
The polygon mirror in this embodiment is a 5-prism mirror. The motor shaft of the polygon prism motor is connected with the polygon prism 2 through a gear structure, and the polygon prism 2 is driven to rotate around the central axis of the polygon prism.
The industrial camera 3 is located in a position to cooperate with the polygon mirror 2. The camera driving structure 4 comprises a slide rail 41, a sliding table 42 movably connected with the slide rail 41 and a servo motor 43 connected with the sliding table 42, the industrial camera 3 is connected with the sliding table 42, and the servo motor 43 drives the sliding table 42 to move along the slide rail 41 and simultaneously drives the industrial camera 3 to move along the slide rail 41.
The present embodiment further comprises an industrial control computer 5 connected to the industrial camera 3 for capturing images acquired by the industrial camera 3.
As a further explanation of the present embodiment, the operation flow thereof will now be explained: the LSU laser emitter 1 emits continuous laser, and the continuous laser is scanned into a continuous and stable laser line segment at an emitting position through the polygon mirror 2 rotating at a high speed. The industrial camera 3 is arranged at a laser emitting position to replace a photosensitive drum in the prior art; to acquire image information over the entire photoreceptor drum length, the industrial camera 3 is mounted on a camera drive structure 4, driven by a servo motor 43, to move in a lateral direction with a uniform motion. The industrial camera 3 continuously takes pictures at high speed during the movement. The industrial control computer 5 collects images acquired by the industrial camera 3 in real time, and forms a complete laser image covering all the theoretical ranges of the photosensitive drums through software synthesis and comparison, and theoretically forms a straight line segment. If the middle of the line segment is broken, the LSU is indicated that foreign matters exist in the LSU to shield part of laser.
Other structures of this embodiment are seen in the prior art.
The present invention is not limited to the above embodiment, and various modifications and variations of the present invention are also intended to be included within the scope of the claims and the equivalent technical scope of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a laser printer's LSU foreign matter detects structure which characterized by: the industrial camera driving device comprises an LSU laser emitter, a polygon mirror matched with the laser emitter, a polygon mirror motor driving the polygon mirror to rotate, an industrial camera used for obtaining laser rays reflected by the polygon mirror and a camera driving structure connected with the industrial camera, wherein the camera driving structure drives the industrial camera to reciprocate in the reflection range of the laser rays.
2. A LSU foreign matter detecting structure of a laser printer according to claim 1, wherein: a motor shaft of the polygon prism motor is connected with the polygon prism through a gear structure, and the polygon prism is driven to rotate around the central axis of the polygon prism.
3. A LSU foreign matter detecting structure of a laser printer according to claim 1 or 2, wherein: the polygon prism is a 5-prism.
4. A LSU foreign matter detecting structure of a laser printer according to claim 1, wherein: the industrial camera is positioned to mate with the polygon mirror.
5. A LSU foreign matter detection structure of a laser printer according to claim 1 or 4, wherein: the camera driving structure comprises a sliding rail, a sliding table movably connected with the sliding rail and a servo motor connected with the sliding table, the industrial camera is connected with the sliding table, the servo motor drives the sliding table to move along the sliding rail, and meanwhile, the industrial camera is driven to move along the sliding rail.
6. A LSU foreign matter detecting structure of a laser printer according to claim 1, 2 or 4, wherein: the system also comprises an industrial control computer connected with the industrial camera and used for acquiring the image acquired by the industrial camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020563188.1U CN212845063U (en) | 2020-04-15 | 2020-04-15 | Laser printer's LSU foreign matter detects structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020563188.1U CN212845063U (en) | 2020-04-15 | 2020-04-15 | Laser printer's LSU foreign matter detects structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212845063U true CN212845063U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020563188.1U Active CN212845063U (en) | 2020-04-15 | 2020-04-15 | Laser printer's LSU foreign matter detects structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212845063U (en) |
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2020
- 2020-04-15 CN CN202020563188.1U patent/CN212845063U/en active Active
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