Few things can make a business document look more unprofessional or a personal missive so careless as using a poor grade of ink. Superior ink can prevent the wavering hues, blotchy words, and dark freckling which are so prevalent on printed materials these days. The question, then, is just how can consumers be certain that they are purchasing a high quality ink for their home or office printers? One way to obtain crisp, focused copies every time is through using HP Deskjet Ink Cartridges . These cartridges are manufactured with the highest regard to quality and must pass a rigorous inspection process before being distributed for sale. Sold as single units of black and white or colored ink, in twin packs, in combo- packs, these cartridges are easy to insert and make any printing project one that can be presented with pride. One reason Hewlett Packard has had such success with its ink cartridges is because of the care which goes into research and testing each new line. Although many lay people are unaware of it, poor print quality is often related to impurities that have found their way into the ink during processing. These small particles can clump together, causing a clog in the print head which results in spotting. HP has worked to lessen this problem by eliminating as many of the contaminants as possible when the cartridges are being manufactured. Researchers also catch any errors through quality testing controls in an effort to keep any substandard cartridges from reaching public distribution. These same tests also ensure that the ink cartridges sold by HP will not dry out when they are idle for a period and will provide lasting text that can be stored for generations. Using the technology of Vivera ink, HP has cornered a large segment of the ink cartridge market, with at least forty percent of the sales. With ink usage growing rapidly, due in part because deskjet printers are less costly than laser printers, HP is working to lower the cost of ink and improve the efficiency of their most popular lines. Concentrating on brilliant colors, especially for printing home photographs, detailed contrasts for black and white documents, and consistency from one document to another, this company is working to keep their ink cartridges on top in the marketplace. Only consumer opinion and sales will determine if HP will achieve this goal.