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Raster scanning type three-dimensional printing machine

A technology of raster scanning and printing machines, which is applied in the field of digital printing machines, and can solve the problems of easy wear, easy damage of LCD screen, and low resolution of printers.

Inactive Publication Date: 2014-12-24
BEIJING KANGDEXIN 3D TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the diffusion of ink dots brings fusion between adjacent pixels of the image. The actual resolution of the printer is not high, and the actual effect of outputting raster stereoscopic images higher than 75 lines is not good. This shows this point.
The disadvantages are: the precision requirements of the mask grating are extremely high, and the success rate of laminating with the LCD screen is low; the friction with the photosensitive material during scanning exposure is easy to wear, and the replacement cost is high; the large-format LCD screen is fragile, easy to deform, and micro-displacement It is difficult to maintain close contact with the photosensitive material at all times, which affects the output accuracy of the three-dimensional image; due to the directional nature of the mask grating, the largest format is only suitable for outputting banner images

Method used

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  • Raster scanning type three-dimensional printing machine

Examples

Experimental program
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Effect test

Embodiment example 1

[0060] Implementation case 1, a black and white LCD screen is used to construct an exposure unit of a raster-scanning three-dimensional printing machine.

[0061] The exposure unit is composed of a control computer (9), an exposure light source (6) composed of two LED light groups L2 and L5, a black and white LCD screen (1), a scanning grating (2), a photosensitive material fixed platform and a scanning displacement mechanism (5) . The optical distance from the light source to the LCD screen is about 2M, and two reflective mirrors are used in the middle to reflect the light, and the thickness of the glass substrate of the scanning grating is 2mm. The exposure time can be accurate to 1 millisecond. The scanning displacement mechanism (5) drives the fixed platform of the photosensitive material to scan displacement in the X direction, and the precision can reach 1 micron. The native resolution of the LCD screen is 1920*1200, and the clarity of black and white images can be displ...

Embodiment example 2

[0066] In the second implementation case, the exposure unit of a raster-scanning three-dimensional printer is constructed with a color LCD screen.

[0067] The exposure unit consists of a control computer (9), an exposure light source (6) composed of six LED lamp groups L1, L2, L3, L4, L5, and L6, a color LCD screen (1), a scanning grating (2), and a fixed platform for photosensitive materials And scanning displacement mechanism (5) constitutes. The optical distance from the light source to the LCD screen is about 2M, and two reflective mirrors are used in the middle to reflect the light, and the thickness of the glass substrate of the scanning grating is 2mm. The exposure time can be accurate to 1 millisecond. The scanning displacement mechanism (5) drives the photosensitive material fixed platform to scan and displace in the X direction, with an accuracy of 1 micron. The native resolution of the LCD screen is 1920*1200. Interpolate each parallax sequence image into 1920*120...

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Abstract

The invention discloses a raster scanning type three-dimensional printing machine. A direct printing principle is adopted. A high-definition LCD screen is used as an image source. An LED point light source illuminates to the LCD screen. Exposure is performed on the photosensitive material through a scanning raster. Multiple times of exposure are performed on a micro-displacement scanning raster or the photosensitive material for improving the resolution of an output image. The raster scanning type three-dimensional printing machine is composed of an exposure unit and a flushing system. The exposure unit is composed of a control computer, an exposure light source, an LCD screen, the scanning raster, a photosensitive material fixing platform and a scanning displacement mechanism. Compared with other planar output equipment, the raster scanning type three-dimensional printing machine is advantageous in that: resolution is improved by more than 10 times; high stereo perception, comfortable viewing and no dizzy feeling are realized; and the raster scanning type three-dimensional printing machine can be widely applied for the industries of photography, advertisement, etc.

Description

Technical field: [0001] The invention relates to a digital picture output device, more specifically, to a digital printer for outputting stereoscopic photos, and the printer can be used for high-precision output of stereoscopic photos and stereoscopic advertisements. Background technique: [0002] Mainstream digital color expansion machine image output technology includes LASER technology and LDD technology. LASER technology is the laser method, which converts digital electrical signals into red, green, and blue light through red, green, and blue laser tubes and exposes them to photographic paper. The laser has the characteristics of good monochromaticity and almost no diffusion, and can produce clear images. High degree of sharpness, very high sharpness, and very vivid colors are the characteristics of photos, and it is easy to achieve large-format exposure. The laser beam is directly sent to the photo paper to make it photosensitive, without the participation of the imagi...

Claims

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Application Information

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IPC IPC(8): G03B27/10G03B27/14
Inventor 薄淑英金勇
Owner BEIJING KANGDEXIN 3D TECH
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