Scanning guns are also known as scanning guns. Pictures, photographs, film to all kinds of drawings and graphics and manuscript information can be input into the computer with a scanning gun, and then realize the processing, management, use, storage or output of these image information. Types of handheld scanner, small drum scanner, platform scanner.
A, hand-held scanner gun
Hand-held scanner gun is the 1987 launch of the technology to form the product, the shape is very much like a supermarket cashier held in the hands of the use of bar-code scanner gun. The vast majority of hand-held scanner using CIS technology, optical resolution of 200dpi, black and white, grayscale, color multiple types, including color type is generally 18-bit color. There are also individual high-grade products using CCD as a photoreceptor, can be achieved bit true color, scanning effect is better.
Two, a small drum scanner
This is a handheld scanner and platform scanner gun intermediate products (in recent years, there are new appearances, because it is built-in power supply and small size is known as the laptop scanner gun) the vast majority of such products using CIS technology, optical resolution of 300 dpi, color and grayscale two kinds of color models are generally 24-bit color. There are also and a few small drum scanner using CCD technology, scanning effect is significantly better than CIS technology products, but due to structural limitations, the volume is generally significantly larger than the CIS technology products.
Small drum type design is the scanner gun lens is fixed, and move the object to be scanned through the lens to scan, operate like a printer, the object to be scanned must be sent through the machine again, therefore, the object to be scanned can not be too thick. The biggest advantage of this scanner is that the volume is very small, but because of the use of a variety of limitations, such as only thin paper scanning, the range can not exceed the size of the scanner.
Three, platform scanner gun
Also known as flatbed scanner gun, desktop scanner gun, most of the scanner guns currently on the market belong to the flatbed scanner gun, is now the mainstream. This type of scanner gun optical resolution between 300dpi-8000dpi, color bits from 24 to 48 bits, scanning format is generally A4 or A3. flatbed benefit is like using a copier, as long as the scanner gun's top cover is open, whether it is a book, newspaper, magazines, photo negatives can be put on the scanning, quite convenient, and scanning out the effect of all common types of It's also the best of all the common types of scanners.
Other large-format scanning with a large-format scanner, pen scanner, barcode scanner, film scanner (note that not a flatbed scanner plus scanning, the effect is much better, of course, the price is also expensive), in-kind scanning gun (not a flatbed scanner with the ability to scan in-kind, a little similar to a digital camera), and mainly used in the field of industry printing and layout of the cylinder scanner, and so on many more.
The type of scanner gun and its use of the difference, so that the scanner gun price is also a big difference, hundreds of dollars to thousands of tens of thousands of dollars of scanner guns are also different because of the appearance and its use of environmental factors. Choosing a suitable scanner gun will make the workflow easier and more convenient.
Baidu Encyclopedia - Scanner gun