扫描仪的使用方法（Scanner usage）

扫描仪的使用方法（Scanner usage） 扫描仪的使用方法(Scanner usage) A method using the scanner: 0 time: 2007-3-26 20:45 | | questionger: tuyaowen999 The best answer is to use a scanner Scanners have become an essential part of our daily work and life. More understanding of the use of scanners, maintenance, common sense, is conducive to improving work efficiency. Detection and evaluation Consumers often buy when scanner products, often only pay attention to technical index label, how many DPI scan resolution, how many bit color number but has not fully reflect the quality of a scanner. The MICROTEK company produced Microtek scanner as an example, provides some simple methods, can scanner sensor quality, transmission mechanism, resolution, gray scale and color performance testing is simple and effective, so that consumers will not because of freeloaders and be cheated. 1. detection of photosensitive element: scan a group level thread (such as hair or wire), and then in the ACDSee 32 browser, set the scale to 100% observations, such as longitudinal break phenomenon, that the photosensitive element is arranged in uniform or a bad block. 2. detection transmission mechanism: scan a scanner format size of the picture, in the ACDSee 32 browser, set the scale to 100% observations, such as horizontal tearing phenomenon or horizontal line can observe, that transmission mechanism of a mechanical failure. 3. detection resolution: scanner nominal resolution (300dpi, 600dpi) scanning color photos, and then in the ACDSee 32 browser, set the scale to the l00% observation, not observed mixed color as qualified, otherwise the lack of resolution. 4. detection of gray level: nominal gray level scanner, scanning a light night photos, watch the bright and dark between the level of high gray level scanner, details of the image (especially dark area) the performance of. 5. digit: detection color scanner nominal color number, scan of a colorful color, true color mode is set to the display, a comparison with the original manuscript, observe the color is full, there is no partial color phenomena. It should be noted that: consistent with the original situation is not likely to produce, display color, so that the influence of observation, photosensitive system scanner will produce a certain color. Most high and mid-range scanners come with color correction software, but only a few low-end scanners have color correction software. 6.OCR text recognition input detection: scan a printed version with the use of black and white, two, nominal resolution scan, 300dpi scanner can make correct identification of the newspaper 5 words, 600dpi scanner can almost recognize the name card on the 7 words. Use and maintenance As ordinary users, not only to buy a quality clearance, convenient and durable scanner products, but also to learn how to use correctly and maintain simple maintenance is also very important. 1. once the scanner is powered on, do not plug in the SCSI and EPP interface cables. This will damage the scanner or computer, except the USB interface, of course, Because it itself supports hot plug. 2., when the scanner is working, please do not cut off the power supply in the middle, and generally wait until the scanner's mirror group is fully positioned, then cut off the power supply, which is very meaningful to the normal work of the scanner circuit chip. 3. because some CCD scanner can scan three-dimensional small items, the instrument should be paid attention to in the scan: when placed sharp objects do not move so as not to scratch the glass, including staples reflecting the draft on; put down when the cover is not too hard, so as not to break the glass. 4. some scanners in the design did not completely cut off the power switch, when the user is not used, the scanner lamp is still lit, because the scanner lamp is consumables (can be analogous to the fluorescent lamp, but lasts much longer), so users are advised to cut off the power when not in use. 5., the scanner should be placed away from the window, should be near the window of dust, and will be direct sunlight, will reduce the service life of plastic parts. 6., because the scanner will produce static electricity in the work, and thus absorb a lot of dust into the body, affecting the work of the mirror group. Therefore, do not use easily falling child fabrics (cotton velvet covered products, etc.), can be covered with silk or batik cloth, room proper humidity can avoid dust on the scanner. Common problems with scanner use 1. when the scanner switch is turned on, the scanner sends out an abnormal sound. This is because some types of scanners have locks that are designed to lock the mirror group to prevent vibration during transit, so the lock should be opened before opening the scanner power switch. 2. the scanner does not respond to power. Some types of scanners are energy efficient, and only after entering the scan screen will the light be lit and will automatically go out once it exits. 3. scan shows "no scanner found"". This phenomenon may be caused by first opening the host and then opening the scanner. You can restart your computer or refresh it in device management,. Is the resolution of the 4. scanner and the resolution of the printer a concept? How do I choose the printer according to the resolution of the scanner? The unit of resolution of the scanner should be strictly defined as PPI rather than dpi. PPI refers to the number of pixel per inch. For scanners, each pixel is not a simple description of 0 or 1, but rather a description of 24bit, 36bit, or CMYK (1004). Printer resolution in dpi D refers to English in dot, every dot no shades of points, but the concept of 0 or 1, and for the scanner, 1 pixel needs a plurality of 4 kinds of dot (CMYK) to describe, namely a bit of color is determined by the density of the different dot the. So the scanner's DPI is different from the printer's DPI concept. With 1440dpi printer output 1:l images, scanning with about 100-150dpi scan can be. 5. scan when scanning appears "hard disk space is insufficient or memory is insufficient" hint. First of all, make sure the hard disk and memory are enough. If the space is large, please check that the scanning resolution you set is too large, resulting in excessive amount of file data. The 6. scan makes the noise very loud. Disassemble the lid of the machine, Find some sewing machine oil drops in the toilet paper, mirror set two track on the grease clean, then sewing machine oil drops in the bearing and transmission gear set on both ends of the belt (note moderate oil), finally adjust the belt tension. 7. scanning time is too long. Check the remaining capacity of the hard disk, optimize the hard disk space, first delete the useless TMP documents, do Scandisk, and then do Defrag or Speed Disk. Please note that scanning speed will slow if the actual scan resolution is set above the scanner's optical resolution, which is normal.