Printing device capable of adjusting output resolution ratio

A technology of printing equipment and resolution, applied in the field of printing, can solve the problems of plastic grating scale vibration, insufficient stability, and failure to meet precision requirements, etc., and achieve the effect of high reliability and high printing speed

Active Publication Date: 2007-08-15
SHENZHEN RUNTIANZHI DIGITAL EQUIP
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] Since the plastic grating scale adopts ordinary film technology and is produced by phototypesetting, this production process makes the accuracy of the plastic grating scale very limited, generally only up to 200dpi. If the resolution of the output image is increased by frequency doubling, it cannot meet the requirements. Everyday Accuracy Requirements
Therefore, once the grating ruler is selected, its resolution is fixed, which cannot meet people's diverse needs for resolution.
[0005] In addition, the plastic grating scale is completed by the principle of light transmission, so the plastic grating scale must be embedded in the inside of the reading head, only partly installed on the rack, and most of it must be suspended in the air, which is easily affected by the outside world, and the stability not enough
Moreover, when the printing speed exceeds 1.5m / s, the plastic grating scale will vibrate, which will affect the printing quality and the stability of the equipment operation

Method used

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  • Printing device capable of adjusting output resolution ratio
  • Printing device capable of adjusting output resolution ratio

Examples

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Embodiment 1

[0029] Embodiment 1, a printing device with adjustable output resolution, this printing device includes a metal grating scale 21 , a reading head 22 , a frame 23 , wires 24 , wires 27 , a decoder 25 and an adjustable frequency divider 26 . Figure 2 is a schematic diagram of the installation structure of the device. In FIG. 2 , one plane of the metal grating ruler 21 is close to the frame 23 and fixed on the frame 23 , and the read head 22 is located on the other side of the metal grating ruler 21 opposite to the frame 23 . The signal read by the reading head 22 is output to the adjustable frequency divider 26 through the wire 24, and the adjustable frequency divider 26 divides the input signal according to the frequency division factor selected by the user, and then outputs it to the decoder 25 through the wire 27 , the decoder 25 decodes and outputs the signal output by the adjustable frequency divider 26 . Each time a decoding pulse is output, the nozzle completes one injec...

Embodiment 2

[0036] Embodiment 2, a printing device with adjustable output resolution. The difference from Embodiment 1 is that the printing device also includes a frequency multiplier, which is used to multiply the frequency of the signal output by the decoder before outputting. The frequency multiplication coefficient Can be 2 or 4. For example, when the frequency multiplication factor is 2, the precision of the metal grating scale used is still set to 1um, and the corresponding output resolution after 100 frequency division decoding at this precision is 254dpi, then after 2 frequency multiplication, the actual output resolution is 254dpi*2=508dpi, after 4 frequency multiplication, the actual output resolution is 254dpi*4=1016dpi, similarly, after 200 frequency division and 2 frequency multiplication, the output resolution is 127dpi*2=254dpi,...256 frequency division and then 2 The output resolution after frequency doubling is 99dpi*2=198dpi, so the continuously adjustable range of outpu...

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Abstract

The invention provides a printer with adjustable output resolution, comprising a metal grating scale, a reader, a frame, an adjustable frequency divider, and a decoder. One plane of the metal grating scale is contacted and fixed on the frame, the frame is used to fix the metal grating scale, the reader is at another face of the grating scale opposite to the frame, the adjustable frequency divider can divide frequency the signal output from the reader and send it to the decoder, and the decoder decodes and outputs the input signal of adjustable frequency divider. The invention can change the frequency division factor of the divider to obtain different output resolutions.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to a printing device with adjustable output resolution. Background technique [0002] Print resolution, also known as output resolution, refers to the maximum number of dots per inch that can be printed in both horizontal and vertical directions when printing output, usually expressed in dots per inch (dpi, Dot Per Inch). Printing resolution is an important index to measure the printing quality of the printer. It determines the fineness that the printer can display when printing images, and its level has an important impact on the output quality. To some extent, the print resolution determines the output quality of the printer. [0003] At present, various printing devices such as desktop printers and inkjet printers on the market have adopted fixed benchmark resolutions, such as 150dpi, 180dpi, and 200dpi. The size of the resolution is determined by the grating ruler and the rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01B41J2/07
Inventor 江洪
Owner SHENZHEN RUNTIANZHI DIGITAL EQUIP
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