How to use the scanner, how to use the scanner

Scanners can also perform their functions in the office. With the help of scanners, it will become easier and more convenient for people to scan documents, effectively improving work efficiency. But how to use the scanner? People who have not used this product will be curious about its use function. In order to solve this problem, I have made a description of how to use the scanner.

1. How to use the scanner

1. Determine the appropriate scanning method

The scanner can scan photos, text, images, etc., and different scanning objects have different scanning methods. First open the driver interface of the scanner, and then you will find that the program provides a total of three scanning options, among which the black and white mode is suitable for originals with white paper and black text. The scanner will represent the two pixels of black and white according to one bit, which will save a lot of money. Disk space. Grayscale is suitable for the mixed layout of graphics and text with both pictures and text. Scan this type of text and pictures with multiple gray levels. Photos are suitable for scanning color photos, sampling and storing multiple levels of red, green and blue channels.

2. Optimize the scanner resolution

The higher the scanning resolution, the higher the resolution of the image it will get, but considering that if it exceeds the resolution of the output device, the clear image will not be printed, but it only takes up disk space and has no practical value. For example, prepare to use a 600DPI resolution printer to output the results, scan at 600dpi, and if possible, scale down large images after scanning. For example, if you scan a 4*4 inch image at 600dpi and reduce it to 2*2 inches in the grouping program, its resolution is 1200dip.

3. Set the scan parameters

Before the scanner is used, there will be a pre-scan function, which is scanned according to the default scanning parameter values of the system. The effect may be different for different scanning objects and different scanning methods. Therefore, in order to be able to move higher image scanning quality, we can manually adjust the parameters. For example, when the brightness of grayscale and color images is too bright or too dark, you can drag the slider on the brightness slide bar. Change the brightness.

4. Design the file size

Regardless of whether the scanned object is a text or a photo, the output through the scanner is an image, and the size of the image is directly related to the file capacity. The size of the scanned file can also be set.

5. Store the curve and load it into the scanning software

In order to get the best color and scan contrast, first do a low-resolution scan, open it in photoshop, and use photoshop to curve function to improve the color and contrast. Store the curve and load it back into the scanning software. The scanner will now use this color correction curve to create a better high-resolution file.

2. Instructions for using the scanner

1. Preparation

Before using the scanner, we must have a preliminary understanding of the basic principles of the scanner, which will help us to use the scanner correctly. In order to reflect the image objectively and truthfully, it is necessary to ensure that the light can smoothly shine on the manuscript to be scanned, so you can first turn on the scanner to warm up for a few minutes, so that the lamp in the machine can achieve a uniform luminous state, which can ensure Its light is in a certain inch of space.

2. Pre-scan steps

In order to save scanning time, some friends will be greedy for convenience and will ignore the pre-scan step. In fact, the pre-scan function is very necessary, it can guarantee the scanning effect. Good manuscripts attach great importance to high-quality scanning effects, while poor-quality manuscripts are difficult to achieve good scanning results through software.

3. What resolution to use

When using a scanner, many users want to know what resolution to use for scanning. In fact, this is still determined according to the user's needs. A scanner with a higher resolution means that the image is clearer, but at the same time it is thought that the image file is not easy to handle. If you want the scanned work to be printed out by a printer, you have to consider the resolution of the printer.

How to use the scanner? In fact, the usage of the scanner is very simple. The usage of the scanner is explained as above. Those who don't understand can understand its specific usage in detail. There are also scanners with instructions. If you don’t know how to use it, you can understand the instructions first, and then follow the instructions.

Photoelectric conversion components

The component that completes the photoelectric conversion is the photosensitive device, which is the core of the scanner. Its photoelectric conversion characteristics, such as spectral response, light stability, sensitivity, noise, etc., are very important for image information transmission.

① CCD (Charge Coupled Device)

The Chinese name of CCD is charge coupled device, which is similar to general semiconductor integrated circuits. It integrates thousands of phototransistors on a single silicon crystal. These phototransistors are divided into three columns, which are divided into red, green and blue The color filter is covered to realize color scanning. The phototransistor can generate current when it is irradiated by light, and output after being amplified. Scanner technology using CCD has been quite mature after years of development, and it is the main photosensitive element used by mainstream scanners on the market. To

The advantage of CCD is that the image quality scanned by it is high, it has a certain depth of field, and it can scan uneven objects; the temperature coefficient is low, and for general work, the change in ambient temperature can be ignored. The shortcomings of CCD are: because the thousands of phototransistors that make up the CCD are very close (micron level), there is obvious leakage phenomenon between the phototransistors, and the interference generated by the signals of each photosensitive unit reduces the actual performance of the scanner. Sharpness; due to the use of mirrors and lenses, image color deviations and aberrations will be generated, which need to be corrected by software; because CCD requires a sophisticated optical system, the size of the scanner is difficult to be small.

② CIS (Contact Image Sensor)

The Chinese name of CIS is contact image sensing device. It uses a contact-type photosensitive element (photosensitive sensor) for light sensitivity. At 1mm～2mm below the scanning platform, 300～600 red, green and blue LED (light emitting diode) sensors are tightly arranged together to produce a white light source. It replaces the complex mechanisms such as CCD array, lens, fluorescent tube and cold cathode ray tube in the CCD scanner, turning the light, machine, and electricity of the CCD scanner into the machine and electricity of the CIS scanner. Scanners made with CIS technology have the advantages of small size, light weight, and low production cost. However, CIS technology also has shortcomings. The main reason is that CIS cannot be used to make high-resolution scanners and the scanning speed is relatively slow.

how to use a scanner step by-step

How to use scanner app

How to use a scanner on your phone

How to use scanner Epson