Weak current College】 【scanner common application methods and failure analysis (3) --- Power By】 【China power house network.

5. scanner alternative uses for broadcasting

"3D" scan

We usually use flatbed scanner is usually only used for scanning plane figure, such as photographs, presentations, in fact, most use CCD sensor scanner can scan 3D objects. In other words, you can use a digital camera, use the scanner to the "shoot" in-kind, directly to small and medium-sized objects are converted to digital imaging. Or not, you can try to place a display card in the scanner's glass platform, although the card devices and scanner glass plane there is a certain distance, but in the scanned photographs would be pleasantly surprised to discover that the naked eye cannot discern the component ID and IC pin could see very clearly. According to experience, generally use CCD sensor with a scanner can clear scan height in 3D 30mm "within" the object, with the depth of field 30mm. I use CCD scanner scans a display card, or a three-dimensional effect. The following will introduce scan 3D objects.

1. the need to scan objects on scanning platform, covered with a sheet of white paper. Cover of the white paper aims to make scanning light to illuminate the side of the scanned object, which is implementing the "3D" scan key.

2. Select the scan resolution is required, and if it is to the newspaper's black and white picture, then select 150dpi, 256-level grayscale scanning greyscale picture size for generic object, in this way scanned pictures fully meet printing requirements.

3. processing of pictures after scanning, mainly to remove the scanned pictures in the background of scattering streaks. Working with pictures of the most easy to use tool may be the Windows95/98 attachments "paint", use paint in Circle tool, Eraser tool to remove the scanned pictures in the background of scattering stripes, plus the text identifies the complete production. Of course, if you need to put the image files are stored as BMP, format, or you can use Photoshop and other image processing software for further processing.

Simulation of copiers

With the printer and scanner price decrease rapidly, many friends have both come home. If so, I'll show you a simulation of the scanner as "copycat". This software is a Photocopier, a manuscript after it control scanner scan, then the printer directly to the output. If the quality of the original text, the "copy" effect is not inferior to the normal Copier on million.

Photocopier is one for Windows95/98/NT/2000 operating system platform, prepared by the Office shared tools software. The current latest version is 2.17, you can link to download the file http://www.nico2000.com/cp.exe size 709KB.

Download installed, scanner and printer ready, and then to copy files to the scanner, and then start the Photocopier to open its jobs window. Photocopier running after the interface shown in Figure 2, its method of operation is very similar to normal Copier. The working window is divided into six functional area, the top is used to display the information in the work process. Left top three buttons are used to set the way the "copy", "black and white photocopying CopyinBlackandWhite", "CopyinGreyScales" as grayscale copy, "CopyinColor" as a color copy. If you wish to use a copy mode, simply click the corresponding button to make it appear red square to the left. For internal only very few pictures of the normal black and white text, it is recommended that you use the "CopyinBlackandWhite" manner. It copied out of something relatively clean, but also the fastest. If you have a color printer, and intend to copy color presentation, you can use the "CopyinColor" manner. If you want to copy the color changing slowly or with large pictures of color, but have only black and white printer, then choose "way better" CopyinGreyScales.

Left middle labeled 100% and 70% of the two buttons are used to set the copy. Click on the "100%" button, you can press the original size without scaling the copy. You use the paper size should be the same size as the original, such as original as A4, A4 paper should also be used. Click the "70%" button, the original narrow to 70% of the original small, you can copy the selected appropriate paper.

The left the bottom of the scroll bar is used to set the brightness, can in the black (left) to white (right) between 7 stalls. Some scanners can automatically adjust the brightness, this feature is not required.

11 press the key on the right to set the number of copies, and copied to two "LCD" figures at least 1, up to 99 copies. If the copy copies setting is incorrect, simply click on the "C" key to clear the original set of results. Note: If you copy more than one copy of the shares, it is best to use a feeder automatically feeds the paper so that the original scan once, "continuous" copy number of copies you want, otherwise you may break because of paper printing.

The above set ready, you can copy into the scanner, plug the printer and scanner power, installed the printer paper, click the diagram's "Copy" button to begin copying, and soon all you have to copy files from the printer output.

"Computer darkroom"

The negatives scanned into the official photos, this one is $ above price professional-grade dual-platform scanner have functionality that is common in the scanner does not scan the transparencies. Now, I can tell you that as long as on the scanner to do some changes to the family of desktop scanner is also able to scan the film, only imagesQuality slightly more narrowly.

Scanning ordinary pictures, the scanner's lamp will light projected onto the surface of the picture, but when the lights through sweep from the film back projection. We want to change only the scanner off the internal lamp, and sweep the film back add a light source. Which the scanner off the internal lights are important steps, if possible, it is best to do a switch on the chassis, this does not affect normal use. When scanning negatives, will cover fully open, the film is placed in the top corner with a thin, fine frosted glass down (Note light so as not to wear flowers in the mirror), use pre scan function determines the negative scan area for the remainder of the platforms you want to cover with black paper, and then open the family table lamp will light in frosted glass top (lamp from glass approximately 3 to 5 cm, s). In fact, many high-end scanners equipped with projection scan adapter and the methods that are described in the installation of the same principle. After the scan is complete, using Photoshop or image editing software such as PhotoStudio2.0 "convert negative" feature that will convert the photo negatives. Here it should be noted that: select a color or grayscale scanning, scanning process 600dpi guarantees the stability of the light. Complete reference of the normal photo negative adjustment of contrast, chroma, and then converted into a negative, do appropriate adjustments, so one need not go to the Studio can "wash" out of the photo. Experienced, the black and white or color films "wash" the black and white photo effect is generally not a problem, but you should not expect too much about this, if you want to wash color photo'd to phase Museum bar (because the color of RGB color conversion and negative is complex, but would not give it five or six months I'm afraid it is very difficult to grasp).


A simple digital camera
Scanners and digital cameras are optoelectronic devices CCD to get graphic image information in the form of, just different. Scanner is a strip of optoelectronic devices, it identifies the graphics process is moving. Optoelectronic devices from one end of the movement to the graphic on the other side, to complete the scan. While digital cameras opto-electronic devices is a matrix-like, it is instantly working process.

If you do not have a digital camera, scanner, and you need to shoot a picture on the computer. Your practices must be first made into a photo, and then to develop photographs, and other photo clean now and then scan a picture after several times of trouble has finally passed into the computer, but the effect can be imagined. We can turn your scanner into a single soil "digital camera".

Scanner to scan in general requirements is flat, but the CCD scanner has some depth of field, you can scan a certain distance of a kind (front was introduced). Then we can imitate the principle, in the digital camera scanner of the above plus a convex lens, let the scenery in the scanner platform Imaging. Specific method is to use mechanical camera, remove the back cover, in the back drop slightly larger than the camera on the frosted glass, hair, face, the best allows frosted glass left the camera about a centimeter to observe focusing will open up the aperture, shutter speed up to B, focusing and holding the shutter when scanning, to clear, you can complete the work of the "shooting".