High-speed scanner

Abstract

The invention discloses a high-speed scanner which comprises a transparent flatbed used for placing files to be scanned and a pressing plate used for pressing the files to be scanned and arranged above the transparent flatbed. The high-speed scanner is characterized in that a cavity for light to pass is arranged below the transparent flatbed, and the side wall of the bottom of the cavity is provided with a digital camera body used for imaging once. The high-speed scanner has simple structure and high scanning speed; especially in color scanning, the scanning speed of the high-speed scanner is tens of times higher than a traditional flat scanner.

Description

technical field [0001] The invention relates to a scanning device, in particular to a high-speed scanner. Background technique [0002] Current scanners all use one-dimensional arrayed image sensors (charge-coupled devices (CCD)) for pattern scanning, that is, the sensors are arranged in a row, and one line (about 10 microns in width) is scanned at a time. Transformation, the scanner scans the graphic line by line, and the entire graphic scan is completed. There are two ways to change the position of the sensor and the graphic, one is that the drawing does not move while the sensor moves - flatbed scanner, and the other is that the sensor does not move while the drawing moves - drum scanner. [0003] ①Due to the relative movement between the drawing and the sensor, to ensure the accuracy of the scanned graphics, the processing and installation of the scanner's transmission (including stepping motors, belts, pulleys, gears, guide rails, etc.), the arrangement of the sensors ...

AI Technical Summary

Problems solved by technology

Therefore, the cost and price of large format scanners and fast document graphic scanners (currently available in A4 and A3 formats) are higher

[0004] ②Small format scanners are cheap, but slow and cannot scan large images; fast and robust graphic scanners can only scan A4 and A3 format graphics, and cannot scan large images; large format scanners are expensive and have a limited lifespan , it is impossible to use it for document scanning for a long time, even if it is used occasionally, it is inconvenient (compared to small-format scanners)

[0005] ③Because ordinary scanners have a mobile device for adjusting the relative position of the sensor and the drawing, long-term use will cause wear and tear, and the mobile device has a great impact on the scanning accuracy, so the wear of the mobile device will affect the scanning accuracy, resulting in the accuracy of the ordinary scanner. will decrease with long-term use

[0006] ④ For drum scanners, paper jams are likely to occur if the drawings are not loaded properly, especially for old drawings, which are easy to damage the drawings and cause irreparable losses

[0007] ⑤It is larger than the large-format roller scanner, because the thickness of the drawing is different, the smoothness is different (the friction coefficient is different), so the paper-feeding speed is not the same when the speed of the pressure roller is the same, resulting in a certain error in the roller scanner

[0008] ⑥Because of the high price and the properties of precision instruments, large-format drum scanners need to be kept and used by special personnel, which restricts more people from mastering graphic scanning technology

[0009] ⑦Because of the high price and single function, many users who need large-format scanners and fast and stable graphic scanners cannot afford to buy them, which reduces the popularity of such devices and slows down the digitalization process

However, current scanners generally have the disadvantage of slow scanning speed. When doing black-and-white scanning, they are slightly faster, and can scan about 2 sheets per minute. When doing color scanning, they cannot scan one sheet in a minute; Scanning speed is unbearable for some users

Images