Polygon mirror motor, optical writing device and image forming device

A multi-faceted mirror and optical writing technology, which is applied in optics, optical components, instruments, etc., can solve the problems of high noise of the multi-faceted mirror motor, and achieve the effects of low machine noise, improved user experience, and reduced energy consumption

Inactive Publication Date: 2019-06-07
至像科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the present invention provides a polygon mirror motor, an optical writing device and an image forming device, aiming at solving the problem of high noise of the existing polygon mirror motor

Method used

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  • Polygon mirror motor, optical writing device and image forming device
  • Polygon mirror motor, optical writing device and image forming device
  • Polygon mirror motor, optical writing device and image forming device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] figure 2 with image 3 As shown, a polygonal mirror motor provided for the embodiment includes a rotor 1 and a stator 2 arranged around the rotor 1, and also includes: a polygonal mirror 3, which is connected to the rotor 1 and has a polygonal prism structure. There is a reflective surface 4, the reflective surface 4 is used to reflect light beams; and a guide part 5 formed on at least one side edge, the guide part 5 is used to reduce the impact on the polygon mirror 3 when it rotates. Wind resistance.

[0044] When the polygonal mirror in this embodiment rotates at high speed, the airflow near the side edge can smoothly flow through the guide part 5, which reduces the wind resistance, and the setting of the guide part 5 can make the side edge place a continuous plane or curved surface The structure avoids the obvious gap when the airflow flows through the side edge, reduces the pressure difference between the windward side and the leeward side, and prevents the form...

Embodiment 2

[0053] Such as Figure 4 with Figure 5 As shown, it is a polygonal mirror motor provided in this embodiment. Compared with the above-mentioned embodiment 1, in this embodiment, the flow guide part 5 is a curved surface extending from the side edge to the position of the vertex angle. Specifically The guide part 5 is a circular chamfer arranged along the height direction of the side edge, and the circular chamfer in this embodiment is an equal-radius rounded corner with a size of 9.25 mm. The setting of the size of the equal-radius fillet here can be optimally designed according to the boundary conditions of the reflection area 4 while meeting the size requirements of the reflection surface 4. The 9.25mm in this embodiment is based on the multi-facet Optimal implementation of the determination of the size of the mirror and the boundary conditions of the reflective surface 4.

[0054] In some other embodiments, the diversion portion 5 is a circular chamfer with a variable rad...

Embodiment 3

[0057] Such as Image 6 As shown, this embodiment provides an optical writing device, which includes the polygon mirror motor described in Embodiment 1 or 2 above, and has all the technical advantages of the polygon mirror motor.

[0058] In addition, while the optical writing device has low-noise operation, due to the setting of the guide part, the wind resistance is reduced, and the energy consumption of the polygon mirror motor A to overcome the wind resistance is reduced. The polygon mirror motor A is used as the optical writing device. The reduction of energy consumption and wear of the core drive components is beneficial to the increase of the service life of the entire optical writing device.

[0059] The optical writing device in this embodiment further includes an IC substrate, the polygon mirror motor A is fixed on the IC substrate through the motor mounting plate, and the IC substrate is used to control the operation of the polygon mirror motor.

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Abstract

The present invention provides a polygon mirror motor, an optical writing device, and an image forming device. The polygon mirror motor includes a rotor and a stator disposed around the rotor; the polygon mirror motor further includes a polygon mirror and at least a flow guiding portion; the polygon mirror is connected with the rotor and is of a polygonal prism structure; a reflecting surface forreflecting a light beam is formed at the side edge surface of the polygon mirror; when the polygon mirror rotates at a high speed, airflow near the side edges of the polygon mirror smoothly flows through the flow guiding portion, and therefore, air resistance can be reduced; with the flow guiding portion adopted, each side edge of the polygon mirror can be of a continuous flat or curved structure,and therefore, a condition that obvious gaps exist between the airflow when the airflow passes through the side edges can be avoided, difference between the pressure of a windward surface and the pressure of a leeward surface can be decreased, turbulence or vortex formed due to atmospheric pressure difference at the leeward surface can be prevented, and therefore, the noise reduction processing of the polygon motor can be realized.

Description

technical field [0001] The invention relates to the technical field of laser printing, in particular to a polygonal mirror motor, an optical writing device and an image forming device. Background technique [0002] In the current laser printers, the laser unit mostly adopts LSU (laser scanning unit) and LPH (laser matrix unit). Among them, the LSU needs to use a polygonal mirror motor to reflect the laser light emitted by the laser generator, so as to realize the function of scanning and dotting. [0003] The rotation speed of the polygonal mirror motor is mostly between 30000rpm-50000rpm. The polygonal mirrors in the prior art are generally regular polygonal prism structures, and the facets of the regular polygonal prisms are used as reflecting mirrors. Cutting air with straight edges tends to produce harsh noises. Such as figure 1 As shown, when the polygon mirror 1 rotates along the direction shown in the figure, a windward side and a leeward side will be formed at the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/12
Inventor 姜乔
Owner 至像科技有限公司
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