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among home user customers the most popular makes of printer are hewlett packard, HP, lexmark, brother and canon all use different technologies and as a result different types of inkjet cartridge . these cartridges all contain ink which has been system matched for optimum printing performance depending upon what the printer has been designed by the manufacturer to achieve. some are geared toward producing high quality, high speed text, others are designed for digital photo printing. based upon this the resolution of these printers varies dramatically from those geared towards high speed text printing at resolutions of 360 or 600 dpi ranging to those printing high quality digital photographs at 4800 or 5760dpi. ink refill kits hp ink cartridge refills are simple to use and offer big discounts and cost savings – the colour kits can be used with 51625a no.25, 51641a no.41, c1823a/d/g no.23, c6625an/dn no.17, c6578an/dn no.78, 51649a/g no.49, c8728an no.28, c6657an no.57, c8766ee no: 343 & 342, c9352ae no.22, c9363ee no.344 – the black kits work with 51626a no.26, 51629a no.29, 51640a no.40, 51645a no.45, c4844a no.10, c6614a/d no.20, c6615a/d no.15, c6656a no.56, c8727a no.27, c9351a no.21, c8767ee no.339 & 338. for lexmark ink cartridges poplar refills include no 16, no 17, no 26, no 27, no 32, no 33, no 1 & no 2 inkjet cartridges – offering huge savings and environmentally sound cheap ink cartridges are not typically a feature of any manufacturer branded products as this is basically where the manufacturer hopes to make profits on the consumables. this therefore has spawned a whole industry specialising in third party replacement printer cartridges these can be classified into two different types compatible inkjet cartridges such as our own generic HP ink cartridges or recycled or remanufactured such as our own total rebuild series hp ink cartridges . throughout the united kingdom you will find various websites supplying office supplies all at different pricing structures. we supply into a very niche sector of this marketplace and specialise in products which differ in construction from those originally intended for use in a particular system or facsimilie machine. alternatively we are also environmentally concious and are trying to promote the art of recycling, whether done via ourselves or yourself by way of refilling when you run out of inks is one way that we hope to make the planet a better place for all to live. throughout europe many organisations, some backed by eec initiatives have attempted to create an environment which actively encourages the re-use of printer cartridges which typically are not bio-degradable. in all tests we are finding that the refilled products can perform at optimum printing levels and especially when used in conjunction with plain paper facsimilie machines the resultant savings can equate to more than the printer cost initially especially if costed out on an annual basis. it is for this reason that we have become specialists in this arena and hope that the message of the ease & simplicity that allows consumables to be refilled will eventually be heard and adopted by all. in all instances the ink cartridge is simply part of a complete mechanism that allows the ink to be put onto the page. it should also be noted that a key factor in inkjet printing is the quality of the inkjet paper by using paper which is specifically designed for use by inkjet printers rather than standard office photocopying paper the quality of the printed results are dramtically improved . inkjet cartridges plus is both the uk's and europe's largest on-line suppliers of compatible inkjet cartridges these are not cheap inkjet cartridges they are generic versions of the manufacturers original consumable sold at a discounted price.In the personal and small business computer market, inkjet printers currently predominate.Inkjets are seen as inexpensive, quiet, and reasonably fast; and many models can produce high-quality output. Like most modern technologies, the present-day inkjet has built on the progress made by many earlier versions. Among many contributors, HP, Hewlett-Packard and Canon can claim a substantial share of credit for the development of the modern inkjet. In the worldwide consumer market, four manufacturers account for the majority of inkjet printer sales: Canon, Hewlett-Packard, HP, and Lexmark.Ink jet printers use one of three main technologies: thermal, piezoelectric, and continuous.Thermal Ink Jet Most cheap consumer inkjet printers (Lexmark, Hewlett-Packard, Brother , Dell , Canon) work by having a print cartridge with a series of tiny electrically heated chambers constructed by photolithography. To produce an image, the printer runs a pulse of current through the heating elements causing a steam explosion in the chamber to form a bubble, which propels a droplet of ink onto the paper (hence Canon's tradename of Bubblejet for its inkjets). The ink's surface tension as well as the condensation and thus contraction of the vapour bubble, pulls a further charge of ink into the chamber through a narrow channel attached to an ink reservoir. The ink used is usually water-soluble pigment or dye-based and the print head is generally produced more cheaply than other ink jet technologies. The principle was discovered by Canon engineer Ichiro Endo in August 1977. Note that this has no relation to thermal printers, which produce images by heating thermal paper, as seen on older fax machines, cash register and ATM receipts and lottery ticket printers Piezoelectric Ink Jet Most commercial and industrial ink jet printers use a piezoelectric material in an ink-filled chamber behind each nozzle instead of a heating element. When a voltage is applied, the crystal changes shape or size, which generates a pressure pulse in the fluid forcing a droplet of ink from the nozzle. This is essentially the same mechanism as the thermal inkjet but generates the pressure pulse using a different physical principle. Piezoelectric ink jet allows a wider variety of inks than thermal or continuous ink jet but is more expensive.Inkjet Inks - The basic problem with inkjet inks is the conflicting requirement for a colouring agent that will stay on the surface and rapid dispersement of the carrier.Desktop inkjet printers, as used in offices or at home, all use aqueous inks based on a mixture of water, glycol and dyes or pigments. These inks are inexpensive to manufacture, but are difficult to control on the surface of media and therefore often require specially coated media. Aqueous inks are mainly used in printers with disposable, so-called thermal inkjet heads, as these heads require water in order to perform.In professional wide format printers, a much wider range of inks is used, most of which require piezo inkjet heads: Solvent inks: the main ingredient of these inks are VOCs. The main advantage of these inks is that they are very inexpensive and also enable printing on uncoated vinyl substrates, which are used to produce vehicle graphics, billboards and banners. UV-curable inks: these inks consist mainly of acrylic monomers with an initiator package. After printing, the ink is cured by exposure to strong UV-light. The advantage of UV-curable inks is that they "dry" as soon as they are cured, they can be applied to a wide range of uncoated substrates and produce a very robust image. Disadvantages are that they are more expensive, require expensive curing modules in the printer and the cured ink has a significant volume and so gives a slight relief on the surface. Dye sublimation inks: these inks contain special sublimation dyes and are used to print directly or indirectly on to fabrics which consist of a high percentage of polyester fibres. A heating step causes the dyes to sublimate into the fibers and create an image with strong color and good durability. Cartridge Print Head Cleaning The primary cause of inkjet printing problems is due to moisture evaporating from the nozzles on the printhead, causing the pigments and dyes to dry out and form a solid block of hardened mass that plugs the microscopic ink passageways. Most printers attempt to prevent this drying from occurring by covering the printhead nozzles with a rubber cap when the printer is not in use. However this seal is not perfect, and over a period of several weeks the moisture can still seep out, causing the ink to dry and harden.To combat this drying, nearly all inkjet printers include a mechanism to reapply moisture to the printhead. Typically there is no separate supply of pure ink-free solvent available to do this job, and so instead the ink itself is used to remoisten the printhead. The printer attempts to fire all nozzles at once, and as the ink sprays out, some of it will wick across the printhead to the dry channels and partially softens the hardened ink. After spraying, a rubber wiper blade is swept across the printhead to spread the moisture evenly across the printhead, and the jets are again all fired to dislodge any ink clumps blocking the channels. Most HP printers also use a supplemental air-suction pump, utilizing the rubber capping station to suck ink through a severely clogged cartridge. Due to the built-in head design, the suction pump is also needed to prime the ink channels inside a new HP printer, and to reprime the channels between ink tank changes. The ink consumed in the cleaning process needs to be collected somewhere to prevent ink from leaking all over the surface under the printer. The collection area is known as the spittoon, and in Hewlett Packard printers this is an open plastic tray underneath the cartridge storage and cleaning/wiping station. In HP printers, there is typically a large fibrous absorption pad in a pan underneath the paper feed platen. For printers several years old, it is common for the dried ink in the spittoon to form a pile that can stack up and touch the printheads. Some larger professional printers using solvent inks may employ a replaceable plastic receptacle to contain waste ink and solvent.The type of ink used in the printer can affect how quickly the printhead nozzles become clogged. While the official brand of ink is highly engineered to match the printer mechanism, generic inks cannot exactly match the composition of the official brand since the actual ink composition is a trade secret. Generic ink brands may alternately be too volatile to keep the printhead moist during storage, or may be too thick and jellied leading to frequent printhead channel clogging.There is a second type of ink drying that most printers are unable to prevent. In order for ink to spray out of the cartridge, air needs to enter somewhere to displace the removed ink. The air enters via an extremely long, thin labyrinth tube, up to 10 cm long, wrapping back and forth across the ink tank. The channel is long and narrow to slow down moisture from evaporating out through the vent tube, but some evaporation still occurs and eventually the ink cartridge dries up from the inside out.