Hewlett Packard MICR ink
Security and precision are two main features of this ink which is why it is used to print check paper and important documents. These inks contain a small amount of iron oxide which gives these ink toners magnetic properties. This ink is regulated by ANSI which sees to it that it is produced under controlled conditions so that it scatters a small percentage of light when it goes under the scanner. This light is essential as it help to give a good read of the numbers printed on the check.
Apart from this security feature there are a whole lot of other features like prismatic pantographs and security lines as also watermarks are incorporated onto these check stock papers. These check paper sets are treated chemically so that they cannot be forged or duplicated by any individual by any means. Apart from this any contact with a chemical agent will cause these paper sets to disintegrate and thereby prevent illegal activities.
HP MICR toner ink is used to print most of these check stock sets as it is cheap and feasible. These MICR toner ink cartridges are also used by companies to print their very own check paper as it helps to cut down costs of buying new check books.