Category: Technology

Role Of Ink

For those of us who own home computers and, therefore printers with which to accompany them, the thought we give to ink is more pronounced as we labor to stay ahead of ink cartridge replacements.

Working with a computer, and a home printer, means that we’ll be faced with ink replacement on a regular basis. And if we’re not vigilant on this front we’re often faced with a surprise shortage of ink that compromises the success of whatever project in which we are engaged.

Printer ink is housed in an ink cartridge and more often than not consumers will replace the entire cartridge when their ink supply runs out. However, there is an alternative in which you can simply replace the ink within the cartridge thus eliminating unneeded waste and keeping costs to a minimum. There are supply stores that can replace your ink or do-it-yourself kits that allow you to handle it at home. Either way, this can be a responsible and cost-efficient alternative to cartridge replacement.

Keeping ahead of the need for ink does not have to be a challenging endeavor. In many cases, a solid and ongoing relationship with a trustworthy vendor can save you money and aggravation. Vendors can keep track of your order history, the type of ink you generally purchase, and the time between orders. If you align yourself with a reputable vendor they can even establish a standing order in which your ink is shipped on a regular basis without you having to go through the order process each time.

Make the ongoing replacement of your ink part of your printer and computer maintenance. By giving some through to this often overlooked resource, you will save yourself any surprises down the line.

LED Screen

  • Size: do you need a Smart car or a BMW X5 (i.e. what are the dimensions of the LED screen you want to install?)
  • Power: do you want to drive it at race circuits or you need it just to do the grocery? (i.e. what’s the resolution of the LED screen?). Note for beginners: resolution = distance between the pixels: the closer they are, the better is the image at shorter viewing distances.
  • Reliability: premium car brands use premium materials and are therefore able to provide longer warranties (i.e. so do LED screens’ manufactures)
  • Credentials: how much do you value the world-class service provided by Toyota? (i.e. beware of newly established Asian companies without a proven technology and history)
  • Training: BMW gives a 2 days safe-drive course to any Customer that purchases the new sport series. (i.e. beware of LED screen manufactures that offer no or minimum training on how to use the display effectively)

Before purchasing a LED screen you should ask yourself these questions and rank them depending of the importance that each point has for you. In this simple way you can define the specifications and profile of the ideal screen and manufacturer you are looking for.

Now, if you need to have exact numbers, here there are some real figures:

  • Size: the smallest led screen size I recommend is 2 x 1.5 meters: of course it depends on the pixel pitch, but in general that’s the smallest size I recommend.
  • Power: the best price/performance ratio resolution I recommend is 10mm: again, the resolution depends on the average viewing distance of your audience, but in general 10mm is a safe bet.
  • Reliability: the warranty should be ideally 2 years or more. some entry-level products might have a 1 year warranty. If this is the products you are looking for, make sure that maintenance contracts are available. And if they are, beware of companies asking 25% of the value of the screen starting from the second year for maintenance it might mean that they consider their product at risk.
  • Credentials: for the credentials of the company I recommend you don’t only check the website because anyone could insert a nice picture on his website (e.g. there are a few pictures of an Italian manufacturer screens published on other websites). What I would recommend you to do is to get the name of at least 2/3 Customers that are already using the screen and then talk to them. Or ask for video-testimonial (indicating the details of the person speaking).
  • Training: concerning the training, make sure that your supplier can provide you at least a basic training on how to use the screen. I’m not talking about a technical training (that’s should be obvious) but I’m talking about a training that shows you the best techniques (and the worst mistakes) to create ads, market your screen, find and win advertisers etc.

Compare Laptops

Today’s laptop market offers a wide selection of laptops with different features. With so many options, buyers are advised to carefully evaluate their needs and compare features of different laptops before purchasing them. Processor speed is one of the key factors for the comparison of laptops. It determines the speed at which the laptop can retrieve data and information. The lower the speed the cheaper the laptop is. System memory is another significant factor to be considered while comparing laptops. System memory is essential for operating multiple functions simultaneously. 128Mb and 256Mb are sufficient for normal operations. If the user needs to perform complex and multiple functions, 512Mb is recommended. The hard drive stores files, data, documents, and other information on the laptop. 10GB to 20GB hard drives are sufficient for laptops. The optical drive refers to external storage readers and can be a CD-ROM, CD-RW, or DVD-ROM or RW or a combination of both. The optical drive allows the user to read files and information from compact disks or DVD disks. It also allows the user to write files to the disk for portable storage. Buyers are recommended to determine the type of optical drive that would best suit their needs before purchasing the laptops. Customers should also compare Internet connectivity features available with different laptops, such as internal modems and wireless connectivity. Some laptops are only compatible with specific operating systems such as Linux, Microsoft, Mac, and so on. Users are recommended to choose laptops based on the type of operating system it offers.

Manufacturers such as Dell, Apple, Compaq, Toshiba, and IBM have strengthened their position in the laptop market, and offer a wide selection of laptops with unique features and modern technology.

Local Area Network

LAN are typically used in a small area, say, a building or an office complex. The need for LANs really cropped when PCs appeared on the computing scene. A point to be noted before we discuss anything more is that there are many different versions of LAN being sold in the market by many different vendors. Most. LANs support live or more terminals. There are LANs which support even one hundred terminals. The figure shows several terminals attached to the file server. In many networks these terminals, can be either dumb or intelligent. A dumb terminal is nothing but a keyboard and monitor and a small interface unit which links it to the host computer.

The user siding at the dumb terminal can access the host, but since the terminal does not have- a hard disk or a floppy disk drive he has to store all his data on the file server itself. In fact, the dumb terminal does not have a hard disk or a floppy disk drive he has to store all his data on the file server itself. In fact, the dumb terminal does not have any processing power. An intelligent terminal however is just like a PC (in fact a PC, in most cases), with its own processor, memory and hard-disk drive. It can be used to work with the files stored in the host or it can even work as a stand-alone unit.

Recycling Printer Cartridges

Certain companies specialize in the recycling of printer cartridges once they have been disposed. They provide an incentive for the printer cartridges offered for recycling. It is a process that disposes of unwanted goods and helps to reduce the burden on natural resources. Inkjet and laser printer cartridge recycling minimizes the quantity of garbage in landfills. Since some of the components in a printer cartridge are non-degradable, it is best to recycle these products. The proceeds received from giving unwanted printer cartridges can be donated to various institutions for the benefits of charity.

The avenues for recycling printer cartridges are large, and they do good business. Most organizations dispose of used cartridges that add to the garbage build up. An easier solution is to approach the proper recycling companies and deliver the cartridges to them for recycling. The Internet is a good source to find the recyclers. These companies gather a sufficient number of cartridges before processing them. Large firms are capable of renovating the disposed printer cartridges and converting them into a high-quality product of any nature.

Individuals can also purchase recycled printer cartridges. These cartridges are readily available for a very low price. However, it is advisable to check the product thoroughly before buying it. Common complaints about these products include one-color running dry before the others and leakage of ink. Hence, the reputation of the producer should be carefully analyzed before buying a cartridge. Sending a cartridge for recycling or buying a recycled cartridge not only saves cost but also saves the environment.

Clean Laptop Touchpad

We will be speaking today about this laptops that have a touchpad as their pointing device and most of all, we will be speaking about how to clean the laptops’ touchpad. Cleaning your laptop touchpads improves the quality of the motion and response of the touchpad.

Because touchpads are sealed, you will not need to worry about dirt or dust entering your laptop. Instead yourself as a constant user will probably make your touchpad dirty. Yes, even if you may not be aware and as clean as you may be, your fingers are actually greasy. This grease, while working with your laptops’ touchpad gets on it making it more difficult to use after a period of time.

So, once in a while you have to clean the laptop touchpad. This can be easily done with a damp cloth with a bit of 50% solution of isopropyl alcohol.Or use a small amount of ammonia-based window cleaner. Actually almost any glass cleaning solution will do the trick. However,because of the “almost” word, if you don’t know for sure that you can safely clean your laptop touchpad with the solution you have, try it first on the bottom of your laptop bag to see if the solution doesn’t do some harm to the inside of the bag.

Always remember not to push too hard when cleaning the surface of the touchpad since the laptop’s touchpad is a fragile device that may suffer injuries while cleaning it. So carefully wipe the dirt off the touchpad of your laptop without pushing.

After cleaning it, if the touchpad was seriously wet, and the touchpad does not responde in the normal, expected way, a week or so of non-use may cure keys that don’t work.

Refilling Ink Cartridges

The new cartridge is much smaller now this changes things a lot with regard to refilling. The problem is that the entire sponge must be filled with ink in order to hold the recommended amount of ink. This is hard to achieve for the amateur because of air in the sponge.

The professional filler fills the cartridge under a high vacuum this removes the air and then the ink is injected. Only after the sponge is filled completely is air let back into the cartridge. This works very well and if the empty is a good one it almost always results in a working cartridge. Now we are talking about the small cartridges produced in the last 2 or 3 years. That is like the small the HP 56 and 57and The Lexmark 16 and 26.

So what can you do to increase your chances of success? First thing is don’t try to fill the cartridge to it’s full capacity. For instance the HP 56 originally had 19 ML so only put in 8 to 10 ML of ink. Trying to fill it full will only result in leaking and other problems.

Because of the air problem I recommend that you insert the needle as far as possible and angle it toward the print head. Another thing that can help is to use a gravity feed. Remove the plunger from the syringe and put in the correct amount of ink. Let the ink slowly enter the cartridge by gravity.

Don’t try and fill a cartridge that been sitting around for weeks or months. Even the professional have problems with these. Fill the cartridge at the first sign that it’s going dry.

After filling your cartridge you may find that it won’t work at all. When you touch it against a paper towel nothing at all comes out. There’s a channel between the print head and the compartment that has the sponge. If this channel gets empty it can take some effort to get it filled with ink. You can buy a cartridge primer to solve this problem. These clip onto the cartridge and the syringe hooks to it. You pull out on the plunger of the syringe and this sucks ink into the empty void I was talking about. You can find these by doing a search on Google or another search engine.

The other way of forcing ink into the cartridges uses centrifugal force. Don’t do this where ink can get on anything! How the cartridge at about shoulder height and bring the cartridge rapidly down to about your knee. Stop abruptly and the ink tries to keep going forcing it up into the print head. You may have to do this several times before your successful. Keep checking by touching the print head against a paper towel. Ink should come out freely. Buying a primer is by far the best method.

The other reason the cartridge won’t print at all is that it is dripping ink. A dripping cartridge won’t print right and in most cases it won’t print at all. If you have over filled then you can suck some of the ink out. Or you may let it set for 2 or 3 hours a will usually do the trick.

Remember we are talking about cartridges that aren’t dried out. If your cartridge are dried out I would recommend buying new or refilled cartridges, as you will probably have a lot of problems. Also we are talking about Hp And Lexmark cartridges. For the others I recommend buying new compatibles, as it’s cheaper in the long run than refilling.

Flash Drives

So where should you buy a Flash Drive? What should you use it for? What size Flash Drive should you buy? What precautions should you take in using a Flash Drive? These topics and more are covered in this article.

Flash Drives can be used to back up files created on nearly any computer that has a USB port. This is especially useful if you are using a program such as Microsoft Word at a public library or a university. Flash Drives are also useful for ordinary tasks such as copying files between two computers in your home, or your computer and a friend’s computer. While you can also accomplish these tasks using CD or CD rewrite media, flash is often more convenient and easier to use.

Flash Drives can also hold large amounts of mp3 or picture files. For example, a 1 GB Flash Drive can hold 16 hours of MP3 music or more than 1000 digital photographs (depending on the resolution of the photographs).

You can get a great deal on a flash drive by watching the sale flyers of national computer discount stores such as Staples, Best Buy, CompUSA, Office Max, and others. Most Sunday newspapers contain advertisements for these stores, or you can go to store Websites, and click on the “Weekly Flyer” link. You will see devices with capacities ranging from 256 MB to 2 GB.

256 MB means 256 megabytes and it is about the smallest capacity flash drive sold. 2 GB means 2 gigabytes and this is one of the largest capacity flash drives sold — although larger sizes will be available soon.

Which size flash drive you buy depends on your budget and how you plan to use it. If you want to store lots of picture files, mp3 files, and other media files, then you may want to think about getting the largest drive available.

If your budget is limited, and all you want to do is exchange a few files between computers or back up a few word processing files, 256 or 512 MB should be more than sufficient.

Flash Drives are part of a category of computer peripherals called “USB Devices”. USB stands for “Universal Serial Device”. Nearly all PCs sold in the last 5 years have USB ports. Most computers have four or more USB ports. If you don’t know where the USB ports are on your computer, look in the manual, or any computer-savvy person can point them out to you. They are often found on the back of a computer or in front, sometimes behind a little sliding or popup cover – the ports are little rectangles, approximately ¼ x ½ inch. Public Computers often have a cable with a USB Jack, laying next to the computer.

Flash Drives, like all USB devices, may be plugged in “hot”. This means, than can be plugged into and unplugged from the computer while it is running. But be cautious. It is possible to lose data or damage your file system, if you plug or unplug your Flash Drive when the computer is engaged in certain activities. Luckily, there is a way to be totally safe.

To safely disconnect a Flash Drive, follow these steps:

  • In the System Tray (lower right corner area of your screen), right click on the Safely Remove Hardware icon and select “Safely Remove Hardware”.
  • A Safely Remove Hardware window will pop up. If you have only one storage device connected you can simply select it and click the “Stop” button. If you have more than one storage device, you may need to double click on the individual devices to figure out which one you want to remove, and then hit the “OK” button.
  • If the system tells you that it is OK to remove the Flash Drive, do so, and you are done.
  • If the system says the device cannot be stopped, close out any programs that are using the USB Drive, then try again.
  • If you can’t get rid of the device busy message, then save your work and shut down the computer. It is then safe to remove the drive.

You should also be aware that Flash Drives are as vulnerable to virus attack as any other storage device. In fact, a Flash Drive can be particularly vulnerable to virus attacks because it may be plugged into multiple computers. Exercise caution in regard to which computers you plug in your drive. On a positive note, many commercial virus protection packages (Mcafee and Norton for example) can protect and disinfect Flash Drives.

Cheap Laptop Batteries

There are many types of batteries that include nickel-cadmium batteries, Lithium ion batteries and nickel hydride. The price of these batteries depends on the material that is used for manufacturing them. A nickel cadmium battery is the cheapest among all the three types of batteries mentioned above.

The price of a nickel cadmium battery can range from $50 to$100 whereas a nickel hydride battery is slightly costlier compared to cadmium batteries. The price of a nickel hydride battery can range from $80 to $150. A lithium polymer battery is more expensive compared to the other two types of batteries that are mentioned above.

Another invention that is revolutionizing laptop batteries are the new external batteries that offer a run-time of about seven hours (also depends on the programs being used on the laptop) at about half the price. Many vendors on the Internet offer batteries at low cost if bought in bulk. Some companies offer discount on batteries if the same company manufactures the laptop.

Alkaline batteries are the cheapest among batteries, but incur the highest cost per cycle. Other cheap batteries include lithium ion polymer and lithium ion batteries. Cheap batteries are also available in the Chinese market and can be shipped to the US by booking them on the Internet.

The life of a battery can be increased by about fifty percent thus decreasing the price of the same. Many precautionary steps can be taken in order to increase the life of a battery such as – fully discharging the battery and recharging them again at least once a month, keeping the batteries cool and dry, and making sure that the batteries are not overcharged.

Surplus Computer Parts

Pick up any local classified, and you will find that there are literally hundreds of ads claiming to give you the best deals on surplus computer parts. When buying surplus computer parts, always be careful and buy it from a reputed dealer. This way, the chances of a part going bad or not working at all is minimized.

When buying any used part, look out for minor damages that are not visible at first. For instance, if you are in the market for a used laptop screen, look in the corners for any chipped plastic around the LCD screen. Such attention to detail is necessary to avoid future hassles. What this means is that virtually any component that you want to buy should be checked thoroughly. Wires are a good example. An overheated wire, for example, could be potentially dangerous to use. Same is the case with a melted cord or power box.

Any accessory that you need to purchase should be cross checked before you make your ultimate purchase decision. For instance, batteries may have been working for a long period of time, and it is always better to check the batteries for leaks or other kinds of damage. Hard disk drives available in the surplus markets are important accessories that are prone to disaster if not checked properly, as are the ports and other connecting devices involved in a computer. One can get extensive information on both buying and choosing surplus computer parts through a simple search on the Internet.