Printing device capable of adjusting output resolution ratio

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...

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

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