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When one or more colours on an inkjet printer stop printing, there could be a blockage on the print head of the cartridge or where the cartridge connects to the printer’s ink tubes. Dry ink causes these blockages, which can usually be cleared by running the printer’s self-cleaning utility. Manually cleaning the ink cartridges and lines with isopropyl alcohol or soaking the print head in water can help clear more severe blockages. If nothing else works, replace the ink cartridge or have the printer serviced. Self-CleaningAll inkjet printers can clean their print heads by flushing ink through the system, removing blockages and dried ink. The method of accessing this utility varies depending on the printer model, but it is usually accessible via the printer software on a connected computer or directly on the printer. Running this self-cleaning programme will fix all but the most severe ink problems, so always try it before resorting to more drastic measures. You may need to repeat the cleaning procedure twice before the printer works properly, but if you don’t see any improvement after the first two attempts, more attempts are unlikely to help. If ink does escape but is misaligned, use the alignment utility rather than the cleaning utility. Manual CleaningIf self-cleaning doesn’t work, you can manually clean your inkjet cartridges and the print head. Remove the ink cartridge in question from the printer. To access the ink on some printers, you must first set the printer to cartridge replacement mode. Soak a cotton swab or paper towel in hot water or isopropyl alcohol. Wipe the print head clean with a towel or swab on cartridges with built-in print heads. Wipe off the connection point on both the cartridge and the printer side of printers where cartridges connect to internal ink tubes. Let all parts dry before reinserting the ink. SoakingSoak the print head in warm water for several hours to remove stubborn blockages from cartridge print heads. This will loosen the block, allowing you to clean it. If ink is flowing through the printer to the print head, apply several drops of isopropyl alcohol to the ink cartridge connection point, reinstall the ink, and run the self-cleaning utility. This will flush the alcohol through the system, cleaning it out. Isopropyl alcohol, on the other hand, will damage rubber, so avoid using this method if your ink cartridges have rubber gaskets around the connection point. ReplacementIf none of the cleaning methods work, you will need to replace the entire ink cartridge. Unless the printer has become damaged internally, this should resolve any issues. The term “electronic commerce” refers to the sale of electronic goods. Some printers have a hidden maintenance mode with a heavy-cleaning utility that can fix the problem. The manufacturer’s tech support will walk you through this process where applicable. If nothing else works, you will need to arrange for maintenance or replace the printer. Preventing BlockagesAfter fixing the block, prevent further problems by taking proper care of the printer. When leaving the printer unused for several days, turn it off but leave it plugged in – some printers run cleaning programmes while turned off to keep the ink from drying. Always shut off the printer with the power button, not by turning off its power strip, since printers need to lock the ink and print heads in a certain place when shutting down.

Humidity can cause printing issues due to its effects on two different physical elements: paper and ink or toner. Extremely high and low humidity levels can both cause problems. In most cases, maintaining a comfortable level of humidity in your office or company facility will solve or mitigate such problems. Controlling the temperature, using air conditioning, or using equipment such as a humidifier or dehumidifier can all be part of this.   Measurement Humidity can be measured in a variety of ways. The most common is relative humidity, which compares the amount of water vapour in the air to the total amount of water vapour that air can hold. This metric takes into account the fact that different temperatures cause air to hold different amounts of water. As a result, adjusting temperature to avoid extremes may aid in the management of humidity-related printer issues. A hygrometer, which is available in both mechanical and electronic models, can be used to measure relative humidity. If you do not have a hygrometer, printing consultant Howard Fenton recommends operating printers only in areas where it is comfortable to work and the air does not feel excessively damp or dry.   Effects The effects of high humidity depend on the type of printer. Problems with laser printers include pages sticking together in the printer (especially when printing double-sided sheets), colour sections becoming saturated, and toner peeling from the page, leaving blank spaces. Because inkjet printers use liquid ink, there is a greater possibility of ink spreading, showing through the paper, or smudging before it dries.   Low Humidity Printing can also be a problem in low-humidity environments. Ink that appears light or faded because it dried out too quickly, pages that stick together due to static electricity, and text and images that appear to spread out or even repeat because the paper shrinks during the printing process are all issues.   Paper Xerox, a manufacturer of copiers and printers, warns that humidity can cause problems with both paper and equipment. It recommends storing paper in environments with relative humidity levels ranging from 15 to 85 percent, and claims that air conditioning will keep most environments within this range. High humidity can cause paper to wave, whereas low humidity can tighten the paper, potentially causing jams. Xerox also recommends keeping paper reams sealed until they are loaded into a printer and any spare sheets in a resealable plastic bag.

IPhones include a service called AirPrint that allows users to print documents over Wi-Fi networks. The phone also includes a Bluetooth transmitter, allowing you to send documents to Bluetooth-enabled printers. If you need to print something that will be seen by customers or clients, you should probably print it from your computer, which gives you more control over the printed output. a number of times during the course of a single day, in the course of a single day, in the course of a single day, in the course of a single day.   1.Set your Bluetooth printer to be discoverable. The procedure varies according to your device. You simply press an external button with some devices. 2.From the iPhone’s home screen, go to “Settings” and then “Bluetooth.” To turn on your Bluetooth transmitter and display a list of available devices, tap and slide the switch to the “On” position. 3.Tap the name of your printer to connect to it via Bluetooth. 4.Right-click on the document or page you want to print and select Print. 5.Tap the curved arrow icon to open a pop-up menu, then select “Print” to send the document to your Bluetooth printer.

Rollers in a laser printer transfer text from the printer mechanism to the paper. When it fails to function properly, the quality of your prints may suffer. Streaking, squealing, jamming, and odours coming from the printer are all symptoms of a bad transfer roller. To restore your prints to their normal high quality, troubleshoot your transfer rollers. StreakingIt’s possible that the roller is dirty if your printout appears lighter than it should or streaky in some places. Use a soft, dry cloth that won’t leave lint behind to clean it. Allowing liquid to touch the transfer roller can damage the unit and prevent it from properly transferring toner. If the print job is not only streaky but also splotched with black ink, the transfer roller should be replaced. SquealingSquealing indicates that the transfer roller is not properly positioned or that the clips that hold it are broken. To avoid damaging other components, remove the transfer roller from the machine according to the manufacturer’s instructions for your printer. When you push down on the left and right sides of the transfer roller, it should feel flat and springy. If repositioning doesn’t work, replace the transfer roller; if the clips are broken, have a professional replace the printer assembly. JammingIf your paper is jamming at the transfer roller, the hardware in the printer may be positioned incorrectly. Removing the transfer roller and replacing it correctly can help paper flow normally through the printer again. Wear gloves or handle the transfer roller from the ends to keep oils off the unit when removing it. When a new printer arrives, always readjust the transfer rollers because they can shift during transport. OdorsIf the printer emits an unusual odour, the transfer roller may be dirty or interacting incorrectly with another part. In either case, as soon as you notice the odour, stop all print jobs, remove the printer roller, and then wipe it before replacing it in the machine. When it’s back in place, print some test files to see if it’s working properly.

Whatever types of documents your company needs to print, you want output hardware that provides the best performance for the lowest possible purchase price. Today’s inkjet printers produce excellent photographic output and text quality that rivals that of a laser printer. Consider two top-level hardware characteristics as they relate to image quality when evaluating inkjet printers in light of your business and its typical document workflow, and select the version of these attributes that matches your workflow. Printhead DesignInkjet printers employ one of two basic printhead technologies. Thermal designs use heat to push tiny ink bubbles onto the paper, whereas piezo-electric designs use electricity to change the shape of the nozzle, releasing ink droplets of varying sizes. Because piezo-electric printheads do not require heat to force out ink, they may offer faster print speeds and longer hardware durability than thermal counterparts. Furthermore, smaller ink droplets can result in improved image reproduction. Ink TypeInkjet printers use dye- or pigment-based inks. Dye-based inks produce a wide range of brilliant colours, allow for smaller ink droplets, and are less expensive than pigment-based inks, but their absorption into paper can blur fine detail reproduction. Furthermore, dye-based inks fade faster than pigment-based inks. Their water-soluble colouring agents result in output with little water resistance. Pigment-based inks set on the surface of paper rather than sinking into it, making them less susceptible to water damage and fading, but they produce a narrower colour gamut. Ink UsageInkjet printers with low prices typically use only two ink cartridges: one for black and one for cyan, magenta, and yellow. If one of the three colours runs out before the other two, you’ll have to discard a partially viable cartridge. Individual ink tanks or cartridges are used for each ink colour in higher-end printers; photo printers may use eight or ten inks to produce subtle colour variations. Image reproduction quality can be affected not only by printhead and ink type, but also by the number of inks used by the printer and whether it includes options for optimal black output on papers with different surface finishes, typically glossy or matte. ConsiderationsAlthough the paper you use isn’t a printer feature, it has an impact on output quality almost as much as the hardware’s capabilities and limitations. Papers designed to improve the perceived sharpness and clarity of printed output by using specialised chemistry to produce well-matched surface characteristics can improve the perceived sharpness and clarity of printed output. Printing on standard office bond paper, on the other hand, yields inferior results, especially when printing photographs or graphics.

Every page in your office colour laser printer contains yellow dots that are too small for the average person to see. The dots form patterns that allow the printer’s make and model to be identified. Printer companies added the dots at the request of the US government in order to trace documents back to the printer. The Electronic Freedom Foundation, a civil rights and technology organisation, has investigated the use and nature of these yellow dots. Information PrintedColor laser printers’ yellow identifying dots contain information identifying the printer’s make, model, and serial number. The dots identify the current date and time if the printer has them. The exact information contained in the dot patterns is known only to printer manufacturers and the government, though outside investigators have partially deciphered its meaning. Affect on DocumentsThe yellow colour contrasts poorly with white paper, making the dots difficult to see with the naked eye. The dots are generated by the laser printing mechanism. In most cases, the dots have no effect on the quality of photos, graphics, or other documents printed on laser printers. Because the dots are so small, they have no effect on toner consumption. PurposeAs the resolution of colour copiers and laser printers has improved, the technology has simplified money counterfeiting and other types of forgery, which is why the FBI and the US Secret Service have asked equipment manufacturers to develop a method that allows law enforcement to detect counterfeit money produced on these machines and then trace the currency back to its source. Types of Printers AffectedYellow dot technology appears to be restricted to colour laser printers and copiers. Because monochrome laser, LED, and inkjet printers lack the yellow toner required to print the dots, these markings are not produced. Furthermore, because Xerox developed the yellow dot technology in the 1990s, this only affects printers manufactured since then. Yellow dot marks have been found on documents from a variety of printer manufacturers, including Xerox, Hewlett-Packard, Toshiba, and Canon. According to the Electronic Freedom Foundation, experts are unaware of any other secret identifying marks in printed materials at the time of publication. Making Dots VisibleBy shining a bright blue light on a printed document, you can increase the contrast of the yellow dots. Light from a blue LED “keychain” source, for example, turns the yellow dots black, making them more visible. A page with little content is an excellent candidate because the black dots stand out more against a blank background.

When you buy a new inkjet printer for your business, you quickly discover that it only accepts a limited number of ink cartridge models. If you run out of ink and your office supply store is out of the consumables for your hardware, that no-substitutions design can be aggravating. However, if you look inside the design principles that guide printer hardware, you’ll notice that not all inks are made of the same materials, effectively preventing one printer’s cartridges from working in another. Printer Design Printer ink is far more sophisticated and machine-specific than universal liquids like automotive washer solvent or window cleaner. Printer and print head designs differ from one manufacturer to the next and from one model to the next. Thermal inkjet printers heat their nozzles, causing them to expel tiny ink bubbles and sucking in ink as the heat dissipates. Piezo-electric inkjets use an electric current to bend a piece of crystal, opening an ink nozzle and emitting a droplet without the use of heat. The proprietary ink formulations used by manufacturers reflect their hardware configurations and output capabilities. Ink Types The types of ink used by these devices differ from manufacturer to manufacturer, just as printhead technologies do. The majority rely on dye- or pigment-based formulations. Dyes are the older and less expensive of the two technologies. Their vibrant colours and finely detailed output make for eye-catching prints, but they can fade faster than pigments, which are made up of colour particles suspended in a liquid. Paper absorbs dyes, which improves friction resistance but can blur details. Pigments dry on the surface of the paper, which helps images stay sharp, but their behaviour makes them susceptible to wear. Cartridge Shapes Even within the products of a single inkjet printer manufacturer, different cartridge designs are specified for different models. Although some of these cartridges may fit multiple models of hardware, these printers share hardware characteristics that allow them to share inks. When you try to install cartridges designed for a different hardware series, you’ll run into the “square-peg-in-a-round-hole” problem. Output Integrity Many inkjet cartridges technically fit interchangeably into the slots for other colours in the same printer. That doesn’t mean they can’t be used interchangeably, unless you’re doing a colour channel experiment. Inkjet user guides advise you to correctly install cartridges and to run a cleaning cycle on your hardware if you accidentally insert one in the wrong place. Even if your printer has more than four ink tanks, you’re unlikely to confuse the black ink tank with another colour. Because of the prevalence of text in typical output, most printers use a larger container for black ink.

Emails and text messages are convenient ways to communicate, but there are some things that must be written down. That means you’ll need printers, which come in a dizzying array of sizes, models, and capabilities. Printers are sometimes classified as impact or non-impact, though the ones you use in your office are almost always non-impact. What Is an Impact Printer?An impact printer needs to physically strike a ribbon against the paper to make a mark, which is where the name comes from. In the early days of the computer era, the best print quality came from so-called daisy-wheel printers, which worked pretty much like a typewriter operated by a superhumanly fast typist. They printed beautifully, but they were slow, lacked graphic capabilities, and were extremely noisy. It wasn’t quite like working in a roomful of jackhammers, but it was close. Many offices also used dot-matrix printers, which formed letters by hammering pins against the paper to make the correct pattern.Although the print quality was lower and they were still noisy, a dot-matrix printer was faster and could print graphics. Line printers were used for high-speed, high-volume printing. These printed a whole line at each strike, and could use either movable type – like a daisy-wheel printer – or a whole line’s worth of pins, like a dot-matrix printer on steroids. These were horrendously noisy too, but did their work in separate printing facilities where you didn’t have to listen to them. What Is a Non-Impact Printer?Once you know what an impact printer is, it’s easy to guess that non-impact printers are the opposite. Instead of hammering a letter onto the paper, they use a variety of gentler, quieter technologies. Inkjet printers are somewhat similar to dot-matrix printers, but instead of pins striking a ribbon they form letters with print nozzles that squirt tiny, almost microscopic dots of ink. Laser printers work on much the same technology as photocopiers, using a drum with an electric charge to attract powdered toner to the page, and then a heating unit to fuse it to the paper. Both technologies provide excellent print speed and quality, as well as beautiful graphics and the option of printing in colour.Thermal printers take a different approach. They form the letters using special heat-sensitive paper and controlled temperatures. This means they don’t need ink, ribbons or toner, which makes them great in niche uses like gas pumps or self-serve kiosks where you want to keep maintenance to a minimum. Printers in Your OfficeNon-impact printers, such as inkjets or lasers, are almost always used in and around the office. Inkjet printers can be significantly less expensive to purchase, bordering on disposable, but because of their relatively small ink cartridges, they are best suited for light to moderate use by individual users or small groups. The smallest and lowest-cost laser printers compete in that end of the market as well, while high-volume, high-speed lasers can churn out hundreds of thousands of pages just as quickly as a line printer and look better doing it. When you’re choosing printers for the office, you’ll need to look at your projected usage and the costs of ownership to make an informed decision. The Buying DecisionIt all comes down to how much printing you do and how you distribute your use. Inkjet printers are great for light printing, but their ink cartridges can be costly on a per-page basis. Laser printers get cheaper per page as you move up in print volume, with high-end machines – and their relatively huge toner capacity – costing relatively little. Big machines make the most sense when they’re shared, so if it’s physically feasible to have a single large laser serve multiple departments, that may be a better option than several smaller machines.Your best bet is to consider how much printing you do, the capacity and cost of each printer’s ink or toner, and then calculate how many you’ll need in a year. This, combined with the purchase price, gives you a good estimate of the cost of ownership for each printer you’re considering, which is a very useful way to choose between them. Impact Printers Still Have a PlaceYou’re unlikely to use an impact printer in your office, but they’re not entirely extinct. They still do some things very well, and there are many applications for them. If you need to print multipart forms on carbon or carbonless paper, for example, your carbon paper printer will always be an impact printer. It could be a dot matrix for low-volume forms or a line printer or line matrix for high-volume forms, but the physical impact is required. Impact printers are still used in industrial settings as well, where their physical reliability and tolerance of poor conditions – dust, heat, humidity – mean they’ll outlast any number of laser or inkjet printers. Another point that might weigh heavily in some businesses is that impact printers are very “green.” Your consumables are fabric ribbons, which have a long life and have a low impact on the environment, and the printers themselves can last for years or even decades with proper maintenance. Inkjet and laser printers, on the other hand, use a lot of ink and toner cartridges and only last a few years. The net environmental impact of an impact printer can be much, much lower.

Because of their permanent, water-resistant properties, industrial printer inks are oil-based, but the machines are expensive and not always suitable for smaller office setups. There are two types of ink available for a general desktop printer: oil-based pigment and water-based dye. Both contain a colourant, a solvent, and bonding additives, but there are differences in how these elements interact and deposit on paper that have a direct impact on water resistance, colour saturation, and overall print quality. Pigment-Based InksBefore being applied to paper, pigments must be mixed with a liquid. Pigment dyes, like industrial printing ink, are typically oil-based for their water- and fade-resistant properties, which are especially useful on slick surfaces such as transparencies and glossy brochures. Pigment dye printers apply a layer of colour on top of the page rather than absorbing it into the paper. The printer uses a combination of heat and pressure to evaporate the liquid and permanently attach the pigment to the paper after the pigment particles and solution mix coat the paper. Dye-Based InksWater-soluble dye-based inks mean that the colour is fully dissolved in the water mixture rather than being stored as tiny crystal particles. Dye-based ink is distributed in the same way that pigment inks are, with the printer laying down the ink solution and then applying the same heat and pressure to dissolve the liquid, but the dye-based ink is left bonded with the paper, absorbed within rather than coating the surface. PermanenceAccording to Wilhelm Imaging Research, a company that publishes printer permanence data, some dye-based inks degrade within two years of printing, though some manufacturers have managed to produce much longer lifespans (up to 100 years) if stored and displayed properly. Similar research indicates that pigment-based inks can last for more than 225 years. Water-SolubilityBecause dye-based inks are water-soluble, they are susceptible to moisture damage. A single drop of water will dissolve and mix the ink, and humid environments will cause the dye to evaporate faster. The oil-based crystal makeup of pigment inks, on the other hand, is unaffected by water, making it ideal for printed pieces that will be exposed to the elements or documents that will be archived for a long time. Color DepthBecause water-soluble compounds are also added for optical enhancement, the colourants in dye-based inks produce deeper blacks and more vivid colours than pigment-based inks. This makes them suitable for photo printing, which relies on vibrancy to bring out the details in a photograph. Pigment-based ink, on the other hand, is more resistant to smearing because it sits on the surface rather than being absorbed into it. Graphics with sharp colour differentiation are better produced with pigmented ink because it has a better blending effect than dye-based ink, which causes colours to dissolve and smear into each other. CostThe materials and production of dye-based inks are much less expensive, and the ink is much more widely available in stores. Pigmented inks are more expensive to produce than dye-based inks, so they are more expensive. However, pigment-based inks are becoming more common, which means that prices will begin to fall.

Laser and inkjet printers are the most popular choices for home or small-office use. Both produce high-quality prints. Laser printers are typically less expensive to operate and use a wider variety of papers, but inkjet printers are less expensive, physically smaller, and produce very good colour images for their price. There are two competing technologies in the inkjet market: conventional inkjets and “bubble jet” printers. Their printed output is similar, but they print using different mechanisms. Print BasicsEarly computer printers functioned similarly to typewriters. An inked fabric ribbon was used to stamp a letter shape onto the paper, leaving an imprint of that letter. Later models, known as “dot matrix” printers, used a set of fine pins to form letters from individual dots. They were faster and more versatile, but the print quality was mediocre. Dots are also used to form letters in inkjet printers, which were first developed in the 1960s. Individual dots or pixels, on the other hand, are much finer than with dot matrix printers, and the resulting print is of higher quality. Conventional Inkjet TechnologyAn inkjet cartridge is made up of an ink reservoir and a network of fine nozzles that produce the droplets used to print text and graphics on your page. Each nozzle contains a tiny piezoelectric crystal, similar to those used to generate buzzing sounds for alarms. When an electric signal is applied to the piezo crystal, it vibrates extremely quickly. The crystal squeezes out a tiny droplet of ink on the forward stroke of the vibration. It creates suction and draws ink from the cartridge’s reservoir into the nozzle on the backstroke, preparing it to print the next droplet. Bubble Jet TechnologyAn inkjet cartridge is made up of an ink reservoir and a network of fine nozzles that produce the droplets used to print text and graphics on your page. Each nozzle contains a tiny piezoelectric crystal, similar to those used to generate buzzing sounds for alarms. When an electric signal is applied to the piezo crystal, it vibrates extremely quickly. The crystal squeezes out a tiny droplet of ink on the forward stroke of the vibration. It creates suction and draws ink from the cartridge’s reservoir into the nozzle on the backstroke, preparing it to print the next droplet. ChoosingBubble jet technology can be found in Canon printers, as well as other brands that use Canon print mechanisms. Canon claims that its process produces more consistent droplet size and thus higher-quality print. However, for both home and business users, the technology used by a printer is less important than its applicability to the job and where it fits in your budget. Consider your printer’s anticipated workload as well as the cost of its consumables. Purchase a machine with a high enough duty cycle to meet your printing needs and low enough ink costs to fit your budget.