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INKJET PRINTERS

المؤلف:  Max M. Houck، Jay A. Siegel

المصدر:  Fundamentals of Forensic Science

الجزء والصفحة:  532

2026-08-25

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INKJET PRINTERS

Inkjet printers generally spray ink onto the paper for character and picture formation. As with laser printers and copiers, there is no issue of a user-defined pressure or dark ness of the characters, and misalignment of particular characters is not normally an issue. In addition, as with laser printers or copiers, there is the chance that extraneous, reproducible markings may appear on the paper that may help in pinpointing the source of the copy. As the cartridge runs out of ink, the typescript may become uneven and fade. This is especially pronounced with color cartridges wherein the loss of one-color ink will distort the colors that appear on the page. Again, however, this problem continues with time until there is no more ink or until the user changes cartridges. If there are no reproducible imperfections from the printer, it may still be possible to pin point the printer manufacturer from chemical analysis of the ink. Of course, there are other class characteristics such as font type that can be used to help associate a docu ment with a computer and printer. As with laser printers and copiers, it is not normally possible to trace a document written on an inkjet printer back to a specific machine.