What is a fiber optic continuity tester?
Fiber continuity tester is also called fiber optic continuity checker. It is the simplest visual test of a fiber optic cable link.
To function properly, a fiber optic cable link must be “continuous”, meaning no breakage, either within the fiber cable or in the fiber connectors, should exist. The simplest and least expensive way to check is to inject some visual light into one fiber end and check the light coming out from the other end.
To perform this task, two types of fiber testers are available: a fiber optic continuity tester or a laser visual fault locater.
Differences between a fiber continuity tester and a laser visual fault locator
The most important difference is their light source. A fiber continuity tester typically uses a red or green color high intensity LED while a laser visual fault locator uses red color semiconductor laser.
Visible lasers produce a more powerful light and can provide more information to the technician than a LED light. By coupling the fiber link to a visible laser, problems with connectors, breaks in the fiber near connectors or splices, and some bend radius violations can be located.
On the other hand, LED powered fiber continuity tester can only verify that light can travel through the fiber link and no more information is obtained. Fiber continuity tester simply yields a “no go” result. If the light isn’t visible at the other end of the fiber link, then the fiber is unusable in its present state and requires further testing and repair.
Applications of a fiber continuity tester
Its best application is testing fiber on a reel before you pull it to make sure it hasn’t been damaged during shipment. Look for visible signs of damage (like cracked or broken reels, kinks in the cable, etc.)
The other good application is to check fiber patch cables at patch panels. When connecting fiber cables at patch panels, use the fiber optic continuity tester to make sure each connection is the right two fibers!
And to make certain the proper fibers are connected to the transmitter and receiver, use the continuity tester in place of the transmitter and your eye instead of the receiver.
Understanding the features of a fiber continuity tester
1. Fiber mode compatibility
Some fiber continuity testers only support multimode fibers while the others support both single mode fibers and multimode fibers. So it’s best to check the spec sheet from manufacturers to choose the type you need.
2. Fiber connectors supported
Most fiber continuity testers have adapters available for testing 2.5mm ferrule connectors such as ST, SC and FC, 1.25mm ferrule connectors such as LC, MU and special types such as SMA connectors.
3. Fiber distance
Most fiber continuity testers have enough light power to support 2km on multimode fibers.
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Toshiba BD1710 Laser Printer Developer - 650 grams Review
Feature
Overview
Developer for Toshiba BD1710 Laser Printer Yield: 650 Grams What does Developer do? In a laser printer, the developer unit is a set of negatively-charged beads that pull the positively-charged toner particles out of their cartridge and onto the drum, which then transfers the toner to the page.
Specifications
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The Brother LC61 cartridges have a unique design, come along with three other color sets namely magenta, yellow and cyan and boast high quality prints. An economical choice, these sets of cartridges represent value for money.
Unique design
As part of our Brother cartridge review we found that these LC61 cartridges come with a unique design element. There is a spring catch located on the front part of these cartridges.
Features and specifications
The Brother LC61 cartridges come with approximately 14.6 ml comprising ink. This dye based ink yields around 450 pages at around 5% of coverage.
Price
The brother LC61 cartridges have a market value of around 27 dollars but you can easily get the compatible cartridges for around 6 to 7 dollars. The compatible cartridges work just as fine if not better than the Brother LC61 cartridges available in retail stores.
Other features
As part of our definitive Brother ink cartridge review we found that these cartridges produce very vivid prints and high quality print output. The specially developed formula for the ink helps create graphics and prints, which are ozone resistant as well as resistant to light fading action. All of these Brother LC61 cartridges have undergone rigorous testing in the Brother laboratories and the presence of a high viscosity and consistent printer ink produces ink flow without any clogs and which is easily regulated in flow. When it comes to the multifunction peripherals of Brother, the ink is anti-smearing in nature.
Specifications
The Brother LC61 variety of cartridges comes with three color sets namely cyan, yellow and magenta. The average page yield is approximately 500 pages along with a coverage spanning 5%. The recyclables nature of these cartridges is not seen as both pre-consumer as well as post-consumer recycling is not available from the manufacturer. Each pack of these Brother ink cartridges comes in three colors. The approximate weight of these cartridges is around 0.600 pounds and the unit of measuring is in PK. The standard black ink version of the Brother LC61 is perfect for Brother printer models such as DCP-585CW, DCP-165, MFC-250C, DCP-385C, MFC-290C, MFC-5490CN, MFC-490CW, MFC-6490CW, MFC-5890CN as well as MFC-990CW model versions. The respective model numbers such as LC61C, LC61Y and LC61M are for the cyan, yellow and magenta versions of the colored Brother printer cartridges.
Our verdict
Overall, the Brother LC61 version of cartridges is superior and provides solid performance. The specially developed ink formula guarantees exceptional print quality and graphics, which do not fade in the presence of light or ozone exposure. In addition, the average pricing of the cartridge per ml is around 46 or 47 cents, which is not much. Thus, these Brother LC61 cartridges are cost effective and produce high quality of graphics as well as prints. The cartridges also guarantee a long shelf life because of the even ink flow and distribution of ink across the page, which lends a uniform print quality.
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Welcome to the final part of our three part series on service contracts. This article covers service contracts on laser printers. Laser printer maintenance contracts are similar to copier service contracts. Most laser printer service contracts are billed by cost per print. It is essentially the same thing as cost per copy. Each time you print a page the internal meter clicks. On a printer you can get the page count or meter reading by printing a configuration page. Then, each month or quarter an invoice is generated by multiplying the cost per page by the total prints made. The cost per page is determined by monthly volume, age of machine and environment. Environment plays a big part because if it is in a dirty environment it will need possibly twice as much service than a machine in a clean environment.
Service contracts are really similar to an insurance policy. They may or may not save you money. The good part is that your costs are fixed, so you will know how much per year you will spend instead of hoping it won’t break down too much or have a serious or really expensive part break. There are many ways of paying for a service contract. It depends on the way you and your company would like to be billed. Most service companies offer monthly, quarterly and annual billing.
Total Cost Management
There is an explosion of service companies providing this way of tracking all of the costs associated with your copiers and printers. It is called “Total Cost Management.” Most if not all copiers, MFP’s and printers can be monitored on your network with revolutionary print management software. You are able to track your total pages or copies. You can monitor toner low warnings, error codes, paper jams, and everything associated with your machine. This software can help you calculate how much you are paying for the total ownership of all of your equipment. This is very helpful when purchasing new equipment. The software will help you figure all the costs of your equipment, toner, parts, supplies and service.
Coverage
Understanding what is covered and what is not covered is very important to find out before you purchase a service contract. Does the contract include supplies? Some supply items are toner and maintenance kits. Find out what hours the service company is available and days of the week that they operate. Which holidays do they take off? What is their response time? Most service contracts do not cover abuse or neglect. So be cautious with those paper clips and staples as they can cause an expensive repair and it probably won’t be covered. Get all of this in writing then there will not be any surprises.
Which Type of Contract?
Choose an all inclusive service contract that covers everything such as parts, labor, maintenance kits and supplies. Or choose a contract that only covers parts and labor.
Color Laser Printers
Service contracts on full color laser printers are essentially the same except that you will be paying for a color print or a black and white print. Pricing varies, but you will be paying about 9-10 times more per print for color than for black and white. If you have ever purchased toner for a color printer you know that color toner is more expensive.
Conclusion
This concludes our article series on service contracts for Copiers, Fax machines and Laser Printers. My purpose for writing this series was to help shed some light on shopping for service contracts for companies that have never purchased one or are in the process of purchasing a service contract. Each service company will have different options but for the most part they all bill their maintenance contracts as described in my series.
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Choosing an output device (notice I did not say “printer”) is an arduous task indeed: inkjet, laser, LED, 3-in-1, 5-in-one, 7-in-one, photo printers, MFPs….. the choices are seemingly endless.. To make matters worse, the employee at the big retail/computer/electronics store has held the job for less than a week and is a lot more knowledgeable about PlayStation than anything else. So what do you do? Here’s a little quick guide to help you sift through most of the choices.
These tips are based on how much paper you use per month. If you do not know (I wouldn’t if somebody asked me), then think of how often you buy paper and how much; then divide by the appropriate timeframe. Regular office paper (A4, letter- or legal-size) normally comes in 500-page reams or 2500 or 5000-sheet boxes. If you buy a 2500-sheet (5 ream) box once a quarter, you therefore use 833 sheets per month.
A - Less than 50 sheets per month: Get as cheap an inkjet as you can - just make sure there are store-brand or knockoff cartridge brands readily available so you can purchase those as soon as the warranty on your printer runs out. If your printer dies, DO NOT fix it: it will be cheaper to get a new one (which will come with a new cartridge pack). I would personally buy a “multi-function” with a flatbed scanner, as they are now quite cost effective. The more mainstream the brand, the more retailers carry it, the better.
B - 50 to 250 sheets per month: If your usage dictates that you need colour and/or a multi-function (any combination of 2 of the following: printer/fax/scanner/copier), then definitely get a multi-function inkjet. However, before you do, do some research (15 minutes on the internet) to determine how much cartridges cost and what their yield (how many pages you can get out of them) is. If a cartridge costs $45 and yields 450 sheets, it will start getting expensive. If you do not need anything other than straight B/W printing, then get an entry-level laser/LED printer. They now come with a very good price tag (under $200) and are very cost-effective.
C - 250 to 1000 sheets per month: In this case, there is no doubt you need to get a laser or LED since it does not make any kind of sense to get an inkjet - the cost will be much higher. If you can, try to get a Multi-function, but remember to do your homework on cartridge cost vs. yield - and do not let the comparatively lower cartridge cost fool you (a $280 cartridge with a 5000 page yield is a lot better than a $120 cartridge with a 1000 page yield). Also, get a system that is suited to your primary application: do not get a fax-based system if 90% of your usage will be copying.
D - Over 1000 sheets per month: In this case, your best bet is to call 3 or 4 office-equipment providers, as they will guide you towards the best choices according to your needs. Just be sure to get 3 or 4 quotes (just to keep them honest) and get an all-inclusive service contract; they include toner and all your services and are typically cheaper (at this stage) than buying toner alone for a laser system.
A few parting words: These tips are for basic office use only; if you need oversize paper (11×17 or A3), o photo-quality finishes for pre-press, these tips are not for you. Also, I do not recommend refilling laser cartridges, as the systems themselves are somewhat of an investment and can be picky. For inkjets, however, since the machines themselves are almost disposable nowadays, it should not be a major issue.
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The Sony unveils its new and enhanced backup storage tape cartridge DAT160 on 1 April 2008. The Sony DAT160 tape (DGDAT160) has native capacity of 80 GB and compressed capacity of 160 GB. The Sony DAT160 is dual layer cartridge, which has extremely thin layer technology. The DAT 160 tape has increased linear recording density. The Sony backup tape offers excellent reliability and performance. The noise level is low, even in the high frequency band. It has the ability tocause repeated read / write operations.
To navigate the new Sony tape is user friendly and simple. Sony has developed the DAT160 backup band, which is capable of protecting data on the effects of heat. The tape loading and unloading is also stable. Sony also conducted various tests designed to simulate transport and storage of the stage of the selection of materials and the cartridge so that the cartridges have a sufficient resistance to temperature fluctuations.
This backupVolume ensures stable tape travel, the damage is reduced by the tape reading and writing operations. These backup tapes were tested by dropping them, and still have the original data is completely recovered. The Sony backup tape has more impact resistance by the addition of polycarbonate for the cartridges. The DAT160 resistance is 15 times more than the polystyrene, which is commonly used in the video cassettes.
The tape is stiff and robust, because the ultrasonic weldingused for the assembly of the tape. Therefore, the data is safe, even if the tape is damaged from the drop impact. The Sony backup tape is robust against abrasion by a metal guide pin that is used at the end of the magnetic tape. The DAT160 tape can be performed more than 20,000 stable repeated cycles using metal guide column. The recording method that is used for inclusion in the DAT drive is called a "helix-scanning method. To see the entire process of inclusion in DAT drive and the videoCassette recorder (VCR) is the same. The DAT tape drive uses 2 heads for the purpose of the letter and the other 2 heads to read the data. An examination of the data collected is done through the heads. In the case where errors in data collection, the data rewritten by the write heads.
The DAT drive has a special software called "recovery software" that will save the file directory. The DDS (Digital Data Storage) was later than the DAT "Digital Audio calledDAT tape technology. "The" Digital Audio Tape DAT technology "is considered one of the most productive of all the other backup tape formats.
According to the results of a survey, about six million drives have shipped since the year 2000. The latest addition to the DAT family is the DAT 160 tape drive. The technology of DAT-160 is on the previous DAT technology and is very similar to the technology of earlier generations of digital audio tape. The main advantageof the DAT technology that made it so popular is that it offers low ownership cost and provides the best results. The wrap angle and rotation speed of the drum both help to calculate the data transfer speed in the Digital Audio Tape (DAT) technology.
The DAT drives of the previous generations had the warp angle of 90 degree, while the new DAT 160 drive has wrap angle of 180 degrees. Therefore, this extended angle of 180 degrees in the new DAT160 tape drive helps to enhance the tape and head contact. So, in this way the data transfer speed of the DAT-160 drive increases and as a result the efficiency of the tape drive enhances.
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There are various factors for which a toner cartridge is required to be changed. Some of them are:-
o The printer points the full capacity of toner. It shows low toner; that implies that few hundred of pages can be printed without any problem.
o Repeated shortcomings of similar variety may be developed in pages.
o Users can change the toner in black and white printer. But it is difficult to change the color toner of the colored printer. You have to ring the helpdesk for the changes in color printer.
o The appearance of the turning out of printer might be withered.
Model of printer
Generally two names are subscripted on the printer, one is the printer’s name and the other is its model name. What is required to change a toner cartridge is the model name. Only with this information, store person can let you know about the toner cartridge to be applied. If there is any confusion regarding the exchange, give your serial number to the manufacturer to make sure to receive appropriate toner cartridge.
Steps to replace toner cartridge
o New cartridge is taken back to the printer and fresh toner cartridge is taken out from the package.
o Switch off the printer.
o Remove the tone cover from the printer.
o Remove the older toner from the printer. It should show low tone to print with a modest amount of a pressure.
o Take out the new toner and remove the strip from the cartridge. Take care that there is a small tab bound to plastic strip on the side of the cartridge. This strip is also to be removed; else the printer will print only blank sheets. Take care that the toner is not spilled over you. If it does, wash it off with cold water.
o Fix the new cartridge in the printer in the similar manner as you removed an older one. There will be directions to help you to place it correctly.
o After setting down the cartridge, place the toner cover over it.
o Switch on the printer.
o Print few pages
You are successful, if the print appears wonderful. Pack the old cartridge in the pack like the new one and give it to some recycler. People might get the credit for their old cartridges.
Deducing the fault, if any
Sometime there can be some problem with the trial pages as the cartridge may be faulty or refurbished. If there is a change that was not with the previous toner, there will be some problem with the toner cartridge. Use another cartridge and see the change in printing. If there is again the same problem then there might be problem with the printer else with the toner cartridge.
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New printers come out in the UK every year coming from more than a dozen brands. Many of these brands are known for manufacturing other computer related electronics like HP and Dell, while others aim towards budget users that need a quick replacement of their old printer. Printers that are worn out and do not perform as well as they should will find that even the most affordable modern printers can spell a huge difference in printing speed, quality, or both. Getting a new printer these days is as easy as ordering from the many online UK stores available. However, disposing the printer is an entirely different story and isn’t as easy as throwing it to the bin.
Why Printers Need Proper Disposal
The WEEE (Waste Electrical and Electronic Equipment) Directive applies in the UK as well, encouraging consumers to properly dispose their electronic waste. While printers do not fall in the hazardous category, unused and secondary printers fall in the “Electronic Waste” category just like ordinary computers and peripherals. Proper recycling of these components helps the environment or can be sent to other developing countries. One of the disposal methods which are selling can be useful in getting some money to buy a better printer. Here are some basics to ensure proper disposal of your printer.
Remove and Recycle Any Ink or Toner Cartridges
Whether the printer is a laser or inkjet, the cartridge or toner must be individually recycled or disposed properly. Instructions are usually detailed cartridge box or cartridge itself. There are also a few UK-based sites that sell printers and offer cartridge recycling services that are willing to pick up the cartridge box without charge. Take good advantages of these services as they make sure that these materials are recycled or properly placed in the land-fill.
Obtain Disposal Information from the Printer Manual or Online Help
If the printer was purchased in the UK, there could be some useful recycling information that can be listed and followed for UK residents. Depending on the brand, that information may be found on documents or online support areas of the UK site. Be sure to follow those methods first as they are the most efficient and sometimes rewarding way in properly disposing these printers.
Find Local Computer or Electronic Stores that Accept Used Printers
While the above method is more recommended, this can be done first if the printer is in very good condition where money may still be earned by selling the printer so they get to properly dispose or resell the unit to another consumer. All it takes is to find any local electronic stores or to search online for sites that may accept them. Most of the sites have contact forms and shouldn’t be too far away if they based locally.
All of these methods are far better than just leaving the printer in the bin. No matter how damaged the printer is, proper disposal will always be the right thing to do and it isn’t very difficult to accomplish.
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Man is always in constant search for knowledge which he
makes use to create innovations that will make his life
better. Among the varied inventions of man is a
computer printer. The first computer printer can be
traced back in the year 1953 which was developed by
Remington-Rand as a match for Univac computer. Laser
printers were evolved from the dry printing process or
Xerox invented by Chester Carlson in 1938. 1971
witnessed the birth of the first laser printer which
was then named as EARS. The next years are period of
experiments and added inventions which paved the way to
the first IBM printer. The IBM 3800 Printing System was
considered as the first high-speed laser printer with a
speed of more than 100 impressions-per-minute.
Nowadays, a computer printer is of vital importance in
the different areas of human activities. It goes hand
in hand with a computer as a component that generates
the hard copy or a readable text from the stored data
on the computer’s system. Several printer technologies
are available today but it can be categorized into two
types - namely the impact and the non-impact
technologies. A computer printer that uses the impact
technology is equipped with a system that requires
contact with the paper or whatever material that can be
used to produce the readable text.
Dot Matrix and Character Printers are the two major
classifications of Impact printer technology. A
character printer is a computerized typewriter made up
of a group of bars which serve as the platform for
letters and numbers. Like a typewriter, the right
characters are hit or struck to touch the ink ribbons
which in turn pass on the characters to the paper. It
can be used with speed but has limited uses. Computer
printers with Dot matrix technology have a group of
small pins needed to strike the ink coated ribbon to
pass on the image to the paper.
A printer using the Non-Impact technology does not need
contact with the paper to produce the desired image.
An example of this is the commonly used Inkjet painters
and Laser printers. An inkjet printer directly sprays
drop of inks into the paper while a laser printer is
equipped with a toner, heat and static electricity to
produce the image. Inkjet printers are used in almost
all offices, business, café and many other
establishments. The printed image coming from an
inkjet printer has tiny dots that usually have a
diameter of 50-60 microns.
Print head assembly, paper feed assembly, power supply,
control circuitry and interface ports are the parts
making up a typical inkjet printer. The quality of the
produced image in an inkjet printer is also dependent
on the type of paper used. Brightness and absorption
are the main factors that determine the quality of the
printed image. The brightness is determined by the
smoothness of the paper’s surface. Smooth surface
reflect more light which makes the image brighter.
Absorption refers to the ability of the paper to take
in the ink. Papers with good absorption capacity have
images that will stay tight while poor absorption
capacity can result in blotting.
Monochromatic and multi-colored images can be produced
depending on the type of printer. Monochrome printer is
only capable of generating images with only one color,
commonly black, while a color printer can produce
colored images. A printer can transform a group of
characters, a vector image and a bitmapped image into a
printed version. Other printers however cannot process
all of these types. By examining your needs, you can
choose the optimum printer for you.
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Before you purchase your next inkjet or laser printer, you will need to understand the importance of the term “Yield”, which we will discuss in a moment. For now, let’s take a look at the various elements that go into determining the cost of printing just “One Page”.
We can identify two major costs. The first being the cost of the printer and the second being the cost of the ink. An Inkjet printer usually runs anywhere from $50 to $300, while a Laser Jet can cost you $200 up to $6,000 depending on the type (Color vs. Monochrome).
As far as the purchase of ink, generally the cost of ink for an Inkjet printer is cheaper than that of a Laser printer. However, you will need to buy it more often than the laser cartridges you purchase for the laser printer. But does buying an expense printer cost you less in ink or does purchasing a cheaper Inkjet printer mean that it does not matter what the cost of ink is? Can we include a common denominator that will determine just how much your printer is costing you? Or better put, what is the cost of printing just “One Page”?
Well, for one thing, you will need to learn a new term called “Yield”. This is defined as dividing the cost of the ink by the number of pages you can print with one cartridge. For example, if it costs you $40 for your ink cartridge and you can print 500 pages, then the yield is 8 cents per page ($40/500=$.08). Compare this with a laser cartridge that costs $150 which produces 10,000 pages per cartridge. The cost of this cartridge is like sticker shock compared to the inkjet printer, right? But this cartridge will only cost you 1.5 cents per page to print. By doing this simple calculation, you can better determine which printer is the most cost effective on a “cost per page” basis.
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