Posts Tagged ‘Scanner’

With the rapid development of Internet and the popularity of computer knowledge, coupled with the recent sharp price scanners, more and more households have a scanner. So, how to get the scanner “springs eternal” mean? How can more efficiently use the scanner it? Generally speaking, the main text recognition scanner, image scanner (including in-kind scanning) and other functions, most people are using the flatbed scanner, then the author from the routine ICOM icf11 battery maintenance, text recognition, image scanning and other aspects to talk about how to efficiently use the flatbed scanner.

Routine maintenance

To give full play to the function of the scanner, routine maintenance is essential. The current principle of the scanner can be classified according to their charge-coupled device (CCD) scanners and touch sensitive devices (CIS or LIDE) scanner, two; according to the form of sub-interfaces are EPP, SCSI and USB scanners are three . CCD scanner, which because of its more mature technology, with a high scanning resolution, depth of expression, long life, etc., which are widely used, but because of their use of optical lens, etc., including precision optical system, making it structure is relatively fragile. In daily use, in addition to dust away, but also to prevent the dramatic impact and frequently moving, to avoid damage to optical components. Some scanners (such as Acer scan Prisa 320p, etc.) also has a dedicated lock / unlock (lock / unlock) institutions, mobile scanners, should be locked optical components, but special attention is again scanner, make sure to first unlock! Otherwise, it is likely caused because of negligence damage transmission scanner! I have met quite a few users thus aggrieved it! EPP parallel port for the KENWOOD th78a battery scanner used, in order to prevent the burning of the motherboard, plug the computer must be turned off. And different parallel port scanner support model is different, such as EPP, ECP, etc., the user should be according to the instructions to set the correct parallel port mode and select the optimal settings through practice, improper or wrong parallel port settings will reduce the performance of the scanner, even lead to failure. In addition, many users focus on upgrading graphics cards and other equipment are the driver, but often neglected to upgrade the scanner driver. The driver has a direct impact on the performance of the scanner, and involves a variety of software and hardware system compatibility. To make the scanner work better, should always be to its manufacturer’s website to download updated drivers for its “inject” new “energy”! In short, the “light-light, dust and maintenance, optimization settings, update drivers” to allow the scanner, “the game of eternal vitality,” the secret set by leaders.

Text recognition

The so-called text recognition system, which OCR (Optical Character Rcognize) optical character recognition system, refers to the use scanner to newspapers, magazines and other printed media MOTOROLA HT1000 Battery characters, tables and graphics, and even scanned handwritten Chinese characters into the computer, and then identify, so as to achieve high-speed A Chinese character input software. Most scanners are now supplied a set of OCR software, but how to improve OCR recognition rate? In general, OCR recognition rate is mainly affected by the following four factors:
1. Original quality;
2. The use of OCR software;
3.OCR parameter settings;
4. Scan parameter settings.

Manuscript should be clean and free of dust and impurities, the best selection of high quality printed originals, avoid using manuscripts. Scan, the original should be placed neatly to avoid excessive tilt. Case of tilt, but also with the software’s “tilt correction” function to correct, in order to facilitate the layout of OCR software. If the scanned image noise more, you should first remove the noise of the deal were then identified. The selection of the OCR software, now popular on the market are Tsinghua OCR, Book OCR, Penpower OCR, etc. There are some products Professional and Popular Edition of the points. OCR selected, the right to set its parameters is very important. Many OCR software provides a standard TWAIN interface and the so-called “direct final sweep,” the two scan mode, in actual use, should be through several experiments to ICOM bp209 battery determine which method is more efficient and practical. In addition, many people have such a misunderstanding: increase the resolution (DPI) can improve the recognition rate. But in fact, in general newspapers, magazines, selected around 300DPI Resolution can, but the resolution is too high may reduce the recognition rate. This is because the high resolution will be more “carefully” to scan the details of the printed word, more easily “pulled” out of print presentation flaws, defects, resulting in recognition rate. Especially when the original printing quality is not very good, this reflects the more obvious side effects. In fact, for most of the original, the real impact of the recognition rate of the parameter is the concentration of light and shade, the brightness and contrast. The set of strokes of Chinese characters looked neither incomplete nor mutual adhesion prevail. In short, by “clean originals, placed neatly, preferably OCR, properly set up” the text can effectively improve the recognition rate.

Image scanning

Scanner to obtain digital images of our critical equipment, it is clear, scanning the same photo, the Motorola radius p210 battery optical resolution of 600 × 1200DPI, 36Bit scanner color depth than the 300 × 600DPI, 24Bit color depth image scanner to obtain more clear and bright. Therefore, the more economically well-off users, should try to choose the optical resolution of 600 × 1200DPI, 36Bit color depth of more than CCD scanners. So, with high-end scanner, we will be able to obtain high-quality digital images? No! To obtain high-quality digital images, in addition to a sophisticated “weapons” but also must become less “internal strength miscellaneous.”

1, the interpolated resolution of choice

The so-called “interpolated resolution” refers to the built-in scanner technology to provide compensation by interpolation mathematical resolution, it is usually much higher than the optical resolution. But its not very effective to improve image quality, but several times or even several times to increase the image file size, reducing the scan speed. Therefore, if it is used for high-quality print output, select high interpolated resolution meaningless.

2, the scanned image post-processing

Almost all KENWOOD th27a battery scanners are different degrees, the following four areas:
(1) the overall contrast distortion. As flatbed scanner will confuse the image dynamic range compression image bright and dark at the gap, causing the overall image contrast distortion.
(2) image color cast. The optical system, and many other reasons, the image scanner to obtain the phenomenon of color cast can easily occur, resulting in incorrect colors.
(3) reticulate (network). Are based on the print outlets in print, the scanner’s “piercing eyes”, these outlets will be “true colors”, if not dealt with, once again printed output, the network will be more prominent, affecting the printing quality.
(4) focal length are not allowed. As the camera as the optical scanner system, there are also the focal length error, especially the CIS scanner device, thus leading to the scanned image is not clear enough.

Although many cheap sony batteries scanner manufacturer through the provision of hardware or software to network, set the filter in the driver as much as possible and other ways to offset these negative factors, but no doubt is: scan the image post-processing is essential! So, how can we efficiently and easily complete a one-time post-processing work? This author describes a method for your reference.

In the above, we the working principle of the scanner and do a lot of structure. Here, we choose the scanner also do some shows. On the scanner to purchase, we summarize the following points:

Appearance:

First, we want to observe the appearance of the scanner, this is not to see it looks beautiful, but see if it is strong. On the MOTOROLA GP340 battery scanner, the shell is crucial to whether or not a solid part, because the scanner all internal components are fixed in the shell, shell strength and stiffness of the clarity of the scanner a great influence on the design a good case you can simply open the cover to the inside wall of the scanner can see a significant strengthening of Article column, bottom plate is not flat, there are a lot of bump. The scanner relative to the poor is only one layer is a thin plastic case, strength not up to standard. The metal casing should not be too sure, over time, easily deformed, resulting in scanner accuracy.

Performance indicators:

In addition to the appearance of strong outside the performance index is the most important part. Performance scanner look good or bad, to observe the following points:

1, the scanner’s resolution:

Currently, the resolution of the scanner scanner reflects the clarity of the image. Scanner on the market, there are 300 * 600dpi, 600 * 1200dpi, 1000 * 1200dpi, 1200 * 2400dpi optical resolution of several different. Home or office users generally recommended to choose 600dpi * 1200dpi (horizontal resolution * vertical resolution) of the scanner. 1200dpi * 2400dpi are above the level of professional-grade, suitable for advertising and design industry. Scanner will be written on the packaging may be the highest resolution is to achieve its 600x1200dpi, you want to see the first figure of 600, which means that the scanner has the scanning sensor 600 sensing points. The more sensitive point, the better the scanner to read more information. The general picture on the website only 150dpi, if handled text and photos, that at least 300dpi resolution, detailed images will have at least 600dpi. Dpi scanner, but some do not have to use some of the larger value of “interpolation digital” (interpolated resolutions) to indicate the resolution, the MOTOROLA GP320 battery scanner is in the projection method using software to scan images to fill the incomplete. We suggest you purchase a resolution of the real performance numbers (ie dpi) scanner.

2 color digits:

The median color scanner is a reflection of the scanned image color range and Analysis capabilities. Usually the color scanner, the median, the more truly reflect the color of the original image, scanner, color reflected the more extensive scan of the image effect is more true, of course, the consequent increase of the image file size will be . The specific indicator is the median color of “bit” (that is how much power 2) to describe the common median color scanner with 24-bit, 30 bit, 36, 42, 48, of whom 30 have the following is out of product. While most cards only support 24-bit color, but because the human eye sensitive CCD and the different curves, in order to ensure accurate color reproduction, you need to be amended, which requires the color scanner to reach at least 36 digits to get good color reproduction. Therefore, it is recommended we should buy more than 36 bits color scanner. Still dominant in the current 36 product, but there are really 36 of 36 (input and output are 36) and sham 36 (input is 36 bits, the output is 24 bits) of the points. This can be reflected in PHOTOSHOP, true 36-bit scan is reflected in the mode 16bit/channel, and leave the 36 is embodied in the mode where 8bit/channel.

3, the light-sensitive components:

Sensor is a key component of a scanner. On the classification and definition of sensor that we have been introduced in the above. CCD scanners currently in use is still the majority, but for several years, mature. Proposed purchase using CCD scanner

4, scanning format:

A common format scanner A4, A4 Long, A3, A1, A0. Large format scanner its price is relatively high, for the average home and office users can choose A4 or A4 MOTOROLA HNN9008A Battery scanner longer, generally to meet their own needs.

5, scanning the volume:

Scanner working process will have some noise, the noise is a measure of the scanner scans the mechanical structure is an important parameter, which will also directly related to the scanned image quality. So I chose the scanner should also consider whether the volume can tolerate it, usually the product specifications for the scanner also marked the book to dB (decibels) of noise data as a unit for your reference.

6, the software and drivers:

As a computer peripheral equipment, scanners, the friendliness of the software interface is also directly related to the user’s use. Currently, scanners are supported TWA1N agreement to support TWA1N in almost all the software to scan directly on the scanning process includes preview, scan, set the resolution, set the color mode, to network, color correction and other functions, the menu for the Chinese way . Should be clear in the instructions on the color effects are options, depending on the equipment to carry out the different adjustments, so choose the color effect is option is a must. In addition, the supplied software must be practical. Ability to identify the best set of optical character recognition software (OCR) for document scanning, and an image editor for photo scanning. If you want to create some of the top of the image, the best buy comes with professional image editing software such as Adobe PhotoshopLE.

Interface:

As already said, the scanner interface, there are three, namely, USB, SCSI, EPP interface. Transfer rate, whether or convenient connection from the point of view, USB interface, has played a very big advantage. So if your computer supports USB interface, it or to vote for it correct. However, some older motherboards do not support USB computer interface, in this case you can only select the EPP interface. (When using the EPP interface, the computer will scan large image significantly to the delay), of course, you can replace your ICOM bp209 battery motherboard to support USB interface, after all, this is where the future trend of peripherals.

Actual needs:

In fact, a price of a sub-goods, expensive things that most of them are good. But since we are as a family to buy, that depends on the actual demand. First, you have to plan your expenses. Although the scanner in the computer accessories and peripherals which are low prices, but for a family, it was actually not a small expenditure. Moreover, it also did not like the computer can be upgraded over time, will be eliminated, and, out of trouble you can not find repair parts from batteries shop. Buy a scanner to figure out is what you first used, or difficult to say whether the scanner you buy enough. The general usefulness of the family of scanners, there are two, one is to use it to scan the newspapers, text books, engage in some Chinese character recognition, the requirements of this scanner is the lowest, but this does not means that you buy the most cheap scanner on it, because you can not use a scanner to scan always typeset text, and if you want to scan poorly printed articles, that will be scanned, regardless of black and white, but there a large number of black spots, stroke fonts have connected the phenomenon, which character you identify the inconvenience. Of course, this is not the cheapest scanner that can not be used, but when the manufacturers in the design to reduce costs, no design feature automatically adapts to the paper. This scanner scans if you want to get better results, it must be adjusted by hand, of course, more trouble. Advantages and disadvantages in terms of price and display Traditional and Simplified, you weigh it. In addition, there are many friends to use the scanner needs to design web pages. Many friends have their own personal web page, can do to make home more attractive, you might make their photograph put up, there are two ways: by digital cameras and scanners. Thus, the accuracy of your scanner must be increased to a level 600dpi, 300dpi scanner can not meet your MOTOROLA NTN7143 battery requirements (now the standard optical resolution, generally to the two values, such as 300 * 600dpi, 600 * 1200dpi, we refer here to the former)

Brand:

In addition to the above, the brand also have to consider when buying a scanner. The formation of the brand are all a process, and often represent excellent quality and perfect after-sales service and so on. There is now common market scanner manufacturer: Microtek, Mustek, Umax, ARTEC, ACER, PRIMAX, AGFA, HP, purple (UNISCAN) and other brands. The domestic market scanner Microtek, Uniscan external laptop battery and Acer, etc are famous manufacturers, market share is relatively high, this is a manifestation of its overall strength, it is recommended to buy. Of course, when you actually have to buy to learn more about the local situation the duration of the warranty scanner, good or bad quality of service, response time, speed and other factors. Other value-added, such as the complimentary software, the company offers activities carried out can also be taken into account.

Effectiveness:

Of course, the most important election or a scanner to scan results, do not look at business presentations, business is to sell their products, they are often selected for their scanned images, they used the knowledge of the poor customers scan, scanned image of the effect is very good, but if you replace the other image effects is not the same. Bring their own pictures for, compare the result of the scan. Look at the MOTOROLA GP340 battery effect of black and white scanning. Do not make any adjustments to the software, in the white paper will not see or little black spots, and the font is not even the pen phenomenon, a relatively good. Second, a color scan. Because large volumes of data, you can only scan part, to see the scan results, the images adjusted to 1 to 1, in this case refers to the pixels on the screen and the scan result is one to one, the actual display image on the screen than the original Big 8 times. At this time the color of the paper should be close to the original. If the font is no jagged edges, which is representative of the sharpness of the scanner, while the paper should be seen in the clear surface is uneven, which represents the reduction of color scanner capability, as long as the above three features, scanner performance on the basic good.

Preparation before scanning

Before scanning to do a little preparation and before testing, can save a lot of time later, in particular, is trying to remove from the scanned image when Chenai or stain, might as well start from a scanner or when photographic film Zhongqiang them erased. These preparations include:

①Preheat
Scanner, take a few minutes of warm up. To get better results, should be scanned at the beginning 30 minutes before the power PANASONIC VW-VBG130 Battery to open the scanner. Youxie scanner did not reach the correct temperature, they can automatically remind and to perform preheating process, until it is completely ready to date.
② erase blemishes and fingerprints
Do not use tissues, because tissue is made from paper pulp, can be very fine to scratch the glass on the scanner platform or drum on the drum scanner, or leave marks on film and print. Can wipe off the glass using a special cotton cloth, gently wipe the dust on photographic materials. Leave fingerprints on the film can not be erased directly, sometimes from a photographic equipment store cleaning fluids, but we can not water.
③ leveling the material to be scanned
 
Scanning some of the square is not curled material than later trimmed using the software easier, better results. If the repair will reduce the use of software image clarity and quality.

Scanner proper use and maintenance

As an ordinary user, not only to buy a quality clearance, convenient and durable scanner products, but also learn the proper use and simple maintenance, which is very important.

The following is the process of using the scanner need attention:

① When the scanner is powered, do not hot-swappable SCSI, EPP interface cable, this will damage the scanner or computer, USB interface, except that it itself is hot-swappable.
② scanner at work, do not half-way cut off the SONY NP-BN1 battery power, usually have to wait until the scanner lens group wholly owned by bit and then cut off the power, which the circuit chip scanner work is very meaningful.
③ Some small-scale three-dimensional scanner can scan items placed in the scanning should be noted that when sharp objects to avoid scratching the glass Do not move, including the Fan Shegao staples on.
④ work because the scanner will produce static electricity, which absorb large amount of dust into the body of Mirror Group. Therefore, do not use the easy fabric to cover the dregs of children (cashmere products, cotton, etc.), can be used such as silk or batik cloth and covered with humidity of the room appropriate to avoid the impact of dust on the scanner.

Similarly, scanner maintenance work should do the following:

① regular cleaning work to do
Scanner can be said that a more sophisticated device, we usually have to do a good job cleaning work. Scanner glass plate and the reflective lenses, lens, or if the dust off some other impurities, the scanner will weaken the reflected light, thus affecting the quality of scanned images. When cleaning, can be wiped with a soft muslin dust cover, and then cleaning the glass plate, as the panel is directly related to the clean image of the scan quality, so we are cleaning the panel, the first glass detergent to wipe it again, and then using a soft dry cloth to wipe clean.
② the benefits of warm-
At the beginning to let the scanner scan the best warm-up before the period of time (time from 60 seconds to several minutes, depending on the specific environment). Just open the scanner when the light source is unstable, and the light source color temperature has not reached the scanner to work the desired value, then scan the output saturation of the image are often inadequate.

Troubleshooting and resolved BP-511A Battery scanner

① Open the scanner, when “SCSI Card not found” prompt.
This is the SCSI card, set the fuse, when faced with adverse circuit conditions (voltage instability or short circuit, etc.) will be automatically disconnected, to be a good line or lower the temperature measured automatically after connection.
② scan shows “Scanner not found.”
This phenomenon may be due to host the first open, after the opening caused by the scanner, you can restart the computer or press the “Device Manager” and “refresh” button. If the scanner is the right boot kept the lights flashing, indicating that the scanner status is not normal. Check scanner and computer interface cable is a problem, and whether the scanner driver installed. Also, check the “Device Manager” in the scanner is conflict with another device, if the conflict can change the jumper on the SCSI card.
③ scan large noise
This may be the scanner moving mechanical parts of the work produced, and the scanning speed are closely related. Machine according to the specific brand of software, the scanning speed is set to medium or low speed to solve the problem.
Scanning may be mechanical noise increases the lack of lubricant. Can open the machine cover, sewing machine oil on toilet paper will be to find Lens wipe grease on the two tracks, and then sewing machine oil on the drive gear and bearings on both ends of the belt (note that oil is moderate), and finally adjusted elastic belt.
④ When the NB-9L battery scanner “is not enough hard disk space or memory” message.
First, make sure the hard disk and memory is enough, if plenty of room, check whether you set the scanning resolution file data is too large causing excessive.
⑤ cause long scan time scanning speed is slow.
Check the remaining capacity of the hard disk, optimize hard disk space, delete unwanted TMP document, do disk defragmentation. Note: If the final setting of the actual scan resolution, higher than the optical resolution scanner, the scanning speed will slow down, this is normal.
⑥ scanner light is orange
If you turn on the scanner, its light has been on the orange, the power should turn off the scanner and check the scanner is plugged in tight supply in the socket, and is grounded. About 60 seconds then turn the scanner power switch.

In short, in daily use should be noted that the process of scanning techniques and maintenance of these matters in order to effectively ensure the scanning quality and PANASONIC VBG130 Battery scanner life.

Scanner is a widely used computer input devices. As optical, mechanical integration of high-tech products, it is our common office equipment, once it fails it will make us helpless, some faults require professional repairs, there are many failures are their own can be ruled out. Here, we show some common troubleshooting method:

Removing the scanner

In the Cheap camera batteries maintenance and repair often require demolition when the scanner, so the scanner first to introduce the basic method of demolition:

1, first remove the glass platform to reach into holes with a Phillips screwdriver unscrew the screws in, you can remove the top cover up and glass platform. Open the scanner, you can see the stepping motor, belts, scanning head and circuit boards and other components. Some of the upper and lower parts of the scanner is not a plastic buckle with screws but the convergence of dismantling a small screwdriver with a flat pry the plastic snaps into the slot, you can separate two parts, prying action to light when the plastic buckle not to damage the plastic parts.

2, unplug the data cable soft. Scanner internal circuit boards generally have two – block fixed in the scan head back, and the other – the scanner block installed in the rear, two soft circuit boards through the data cable connected. Remove the scan head must first remove the data before the soft cable. Soft cable card data in the circuit board cable card slot, remove the soft cable is required on both sides of the first cable card slot outside sales call, then you can easily draw out the soft cable .

3, the removal scan head. Most of the scan head in a circular rod wear (rail), driven by the belt along the longitudinal motion of the scanner, just circle the plastic rod from the deck of the base removed from the belt to the scan head can Remove the scan head and round up the rod, and will be out of round metal bar from the scanning head.

4 Remove the tubes. Scan head lamp at the top, placed horizontally along the scan head, the card in the scan head on both sides of the plastic deck, and its Dell latitude d600 battery power supply plug is inserted in the scan head and the back of the circuit board. Simply remove the lamp power supply circuit board plug, you can remove the tube from the scan head. Only the finest tube matchstick thickness, remove, place the required care.

5, removal of circuit boards. Unscrew the two screws to remove the scan head of the board, the board can see the front of the CCD DIP package devices. CCD devices are required because the optical path of the scanning optical lens, the installation will affect the scan quality to restore properly, the proposed scanning head Do not remove the circuit board.

Common cause of the malfunction and troubleshooting

1, the entire image is acquired only a small part of the

Failure and exclusion: Focus rectangle is still stuck in the preview image; only the rectangle of the area to be retrieved. After focusing in the finish, remove the focus rectangle click, trial and error to get the images.

2, there are too many image patterns (noise)

Failure and exclusion: the working environment of the scanner humidity exceeded its permitted range (perhaps outside the scope of the scanner is allowed to be stored or transported.) Let scanner working within the allowable range. Turn off the computer, and then turn off the scanner, then turn on the scanner first, then open the APPLE 15-inch aluminum powerbook g4 battery computer to re-calibrate the scanner.

3, the color difference between the original color and the screen is too large

Failure and exclusion:
(1) Check the screen of the color, brightness and contrast settings are in line with the normal requirements.
(2) Check ColorLinks screen configuration options are correct.
(3) If FotoLook is running under Photoshop plug-in, check the File-Preferences Monitor Setup, Printing lnks Setup and Seperation Setup are correct.
(4) Assuming the above settings are correct, you can do something in between the scanner and the display color correction.

4, scan the entire image distortion or blurred
Failure and exclusion:
(1) the scanner glass is dirty or dirty bar mirror; glass with a soft cloth and clean the mirror bar.
(2) Scan the original documents were not always flat against the document table; ensure scanned always flat on the platform.
(3) ensure that the files do not move during the scan.
(4) scanner during the scan produced by placing uneven vibration; attention to the scanner placed on a smooth surface.
(5) adjust the exposure settings of software or “Gamma” setting.
(6) If the above occurs parallel port scanner, transmission lines may be a problem, we recommend using these high-performance IEEE-1284 cable.

5, dell laptop battery scan the image on the screen display or printed output always appears the phenomenon of loss of points and lines
Failure and exclusion:
(1) Check whether the scanner’s sensor failure or file automatically appears in the paper guide and paper feeder institution fails, look for checks and maintenance professionals.
(3) of the scanner to do dust optical lens processing, with special best small vacuum cleaner.
(4) Check Scanner white calibration bar outside the cover if there is dirty, the need for timely clean.
(5) check whether the document glass is dirty or scratched, thoroughly clean the scanner can be regularly or replace the document glass to avoid this from happening. In the latter case should contact the local authorized technical service center.

6, scanning prints, the turtle pattern (cross image) appears in the image of a specific area
Cause of the malfunction and troubleshooting: First, let us look at the simple principle of color print image. Try to take a Dell Inspiron 1520 battery magnifying glass look at the general color prints, in fact any graphics are composed by 4 colors, is often referred to cyan, magenta, yellow and black. The colors are very small dots (good color printing should have a resolution of 1200 dpi), using combinations of dots are arranged so that the eye illusions, such as certain areas are more red dots, the human brain’s visual system bias that this area will be red. This small network, when the scan will be detected by sensitive light-sensitive component out, so the results of the scan lines of a variety of whole picture will appear, seriously affecting the quality of scanned images. Can use several options to avoid the generation of moire.
(1) In the “Image Type” select “color photos” (to reticulate) settings, or in the “image type” dialog box, select “go to reticulate” setting.
(2) between the file and place a transparent platen page, defocusing the image.
(3) The correct positioning of the image.
(4) the small HP pavilion dv8000 battery image size can be adjusted slightly.
(5) the TWAIN scanner select the “Clear Edge clarity” check box.