Electronics and Computer Review

Archive for the ‘Printer & Scanner’ Category

Barcode scanners are light emitting devices that are used to read barcodes. Usually attached to a computer or laptop via PS2 or RS-232, the data collected is stored on a computer for processing or storage. It is now used in many different industries such as retail or production.

They have been on the market for many years now with new versions of barcode scanners available every year. The prices can vary from as low as $50.00 to as high as several thousand dollars. So how do you pick a good barcode scanner?

To answer that question, it is important you know there are 2 major classes of barcode scanners, image-based and laser-based. Image-based barcode scanners use a camera usually embedded in a barcode scanner. The camera will capture the images and then processed by complex image techniques to decode the barcodes. Laser-based barcode scanners uses mirrors and lenses to read the barcodes.

Laser barcode scanners are usually more expensive than image-based scanners. They have their own pros and cons. An image-based barcode scanner do not have internal movable parts therefore are more resistant to drops or knocks than laser barcode scanners. Also, image-based barcode scanners have a shorter scanning distance (4 to 10 inches) compared to laser barcode scanners. On the other hand, laser scanners are more prone to wear and tear due to their lenses. They not only have a longer scanning distance (up to 24 inches) but also are able to scan from a wider angle from the barcode.

Be aware that the scanning distance for both image-based and laser barcode scanners have already improved dramatically over the years and I wouldn’t be surprised if a barcode manufacturer claims an image-based scanner has a scanning distance of 24 inches.

Here are some questions you need to ask yourself before getting a barcode scanner. The size of scanner required? Type of environment the barcode scanner will be using (outdoors, shop, warehouse)? The scanning distance required? Are they to be used hands free or hand-held? Your budget?

So my suggestion is if you need a barcode scanner for long range scanning, get a laser barcode scanner. For short range scanning, use an image-based barcode scanner such as a CCD barcode scanner. The environment as I asked earlier also plays an important part. If the barcode scanner is being used outdoors or in rugged environments where it is expected to take a drop or knock or two, then it is best to get an image-based barcode scanner. If it were for example being used in a retail shop, then a laser barcode scanner would be the best choice.

There are such a wide variety of barcode scanners available that I just can’t explain completely in this article. If you are in doubt, consult the barcode manufacturers such as symbol or metrologic who have sales consultants who are able to do an analysis of the type of barcode scanners needed by your business.

The emergence of technology in transportation, communication, computer and entertainment has long been observed by people. And with the development of these high technology inventions, the need for safety and security arise. Technology has also seen this need which led to the development of barcode tags and scanners.

A barcode is a representation of information. It is readable by a machine called scanner. The barcode is printed on a small piece of paper called tags. The barcodes are printed with dark ink usually with a white background. This is done to create a high and low reflectance allowing the scanner to convert the code into binary language. This way, the scanner can read the code. In the past, barcodes were stored in the spaces of paralleled lines. But technology made it possible to store these data in different shapes and patterns.

Barcodes now have become an important part of people’s lives. They have entered the business world as diverse as transportation and telecommunication. Businessmen find barcodes the most cost-effective aspect pf business and management.

Barcode and scanning system uses several symbols to make the conversion of bar codes into the computer’s language making it possible for scanners to read the code. Some most common symbols are code 39 which is now used for data security. This is an efficient way of securing the data as it has the self-checking property that out of 70 million characters scanned, only one error is expected. UPC, another most common symbol is now found on non-food goods sold in the market. This is used for a more efficient and easier price look up without increasing the printing cost. 2of 5 Code was also created for warehouse inventory handling and airline ticketing. Codabar is used to process airway bills and are now very common in freight forwarding companies and custom brokers. Plessey Code is commonly used in grocery stores. This type of code is the one that are put in items and the cashier or teller scans for price look up and computation of the bill and Code 11 is very effective for telecommunication components labeling.

With the development of different symbols for barcodes comes the development of barcode readers or scanners. Barcodes transmit information and the transmission depends on how the bars and spaces in a code are arranged. The barcode scanners are responsible in scanning and reading the information converting it into the binary language then transmitting it to the computer attached to it. Using the light detector attached to the scanner, the amount of reflection is then converted into an analog pattern. Different kinds of readable machines or scanners have been developed to make the scanning more efficient and accurate. These scanners come in a variety of sizes, shapes, and prices. Checkout scanner is the most commonly used. These are found in many supermarkets. Light pen is also one of the most commonly used as it is portable and cheap. Another type is the barcode slot reader which is used to scan moving codes. This is used in airports to scan the codes attached to the luggage. Laser barcode readers use the las er technology. It deals with light in small powerful beams. These readers can be used in freight forwarding to track the progress of shipment. It is one of the most expensive scanners and many freight forwarding companies and custom brokers invest on this to ensure an effective and safe transporting of goods from one place to another.

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More and more people are shopping online for their printer and toner supplies. There are online stores that carry almost every brand name and accessory in existence. There are advantages and disadvantages of using an online source for these products, and a few things to watch out for while shopping as well. Here’s a quick checklist of what to look for when buying printer and toner supplies online.

Check for Compatibility

The tricky part to buying laser printer supplies and toner is making sure the accessories are compatible with your printer. Most printers come with a toner cartridge already installed. But when it comes time to replace the cartridge, you should look at the old cartridge and write down the product serial or identification number on the cartridge. If you’re not sure about the type of toner cartridge needed, check in your printer manual.

You can also check in the printer manual to find out about other replaceable parts if your printer needs a repair. It’s important to buy parts that are compatible. Trying to install toner or other parts that are not compatible could harm the machine. Also, you’ll save time and money by checking the compatibility in advance. If you order the wrong toner, it will have to be shipped to you and then shipped back to the company for an exchange. The company might not refund your original shipping amount so that’s money lost.

Price versus Quality

Compare prices on printer supplies and toner, but don’t go by price alone. There are many companies that sell cheap made products at cheap prices. It’s better to pay a little more and get a good brand name product than to waste money on a product that won’t last.

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Reasonably limited value for top drawer scans, the Epson Perfection 4490 Photo provides remarkable results with 4800 x 9600 dpi resolution as well as an impressive 3.4 Dmax. This full-featured artist causes it to be simple for anybody to rapidly restore, repair and renew classic photos, film and transparencies for stunning color reprints and enhancements. Effective Digital ICE technology offers built-in dust and scratch removal abilities for film, while Epson Easy Photo Fix provides one-touch color restoration. Together, both of these features bring new existence to faded or broken originals.

The Epson Perfection 4490 Photo offers fully automatic checking for elevated productivity, plus two advanced checking modes for greater control. Convenient film holders accommodate multiple 35mm 35mm slides and disadvantages, plus medium format film. And, Hi-Speed USB 2. guarantees fast bandwith. You will find a completely featured software program which includes Adobe Illustrator Elements, ABBYY FineReader Sprint, and much more.

Suitable for both Microsoft Home windows and Macs os’s, this scanner offers an unequalled solution for just about any task or project. Wealthy in quality and flexibility, the Epson Perfection 4490 Photo will reveal and optimize everything. When joined by having an Epson Stylus inkjet printer, it is a perfect option for creating brilliant images designed to last.

Features include:

• Professional level 4800 x 9600 dpi resolution
• 3.4 Dmax for wide dynamic range and greater image quality
• Powerful Epson Easy Photo Fix™ to restore faded color photos
• Built-in transparency unit with dedicated light source for better scan uniformity
• Versatile scanning with film holders for 35mm negatives, slides and 2-1/4″ transparencies
• Powerful software package for photo and document scanning; includes Adobe Photoshop Elements

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