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 user 2006-04-05 at 11:58:00 am Views: 49
  • #15280

    Ink and paper make a world of difference
    06:THERE’S a feeling among consumers that printer makers recommend
    their own ink and paper to make more money. Not so, say the major
    Connect asked HP, Kodak, Canon and Epson: “Why should
    consumers always use your paper and inks with your printers? And what
    happens if they don’t?” Here are their responses.

    Tests show that third-party inks require more head cleaning on an inkjet printer and cause more blockages than genuine inks.
    ink has some fixed and some variable characteristics. Viscosity and
    temperature are two key ones. Every type of paper has its own
    characteristics. Absorption rate and permeability are two key ones. To
    achieve optimal print quality, every printer vendor programs its
    printer drivers with the characteristics of their own ink and paper
    Epson printers have a table of how viscosity of the ink in
    the printer (known by the printer talking to the chip on the ink
    cartridge) varies with temperature. The printer also has a small
    thermometer to measure ink temperature.
    When these are known, the
    printer automatically varies the droplet size and shape (and sometimes
    angle of firing) to match the current viscosity of the Epson ink, so
    you get an optimal result according to the type of Epson paper the ink
    is being applied to. If either the ink or the paper is not genuine
    Epson, then their precise characteristics are unknown to the printer
    and it will then apply ink to the paper in the way that is optimal for
    Epson ink and paper, which in all likelihood will not be correct for an
    alien ink-paper mix. The result will be of less quality.

    HP carefully co-designs the printer, ink and photo paper together as a
    system, using HP inks and paper gives maximum reliability, ease of use
    and the best print quality. A non-HP ink can cause a multitude of
    problems within the printhead/cartridge. Glued areas can gradually
    delaminate because of chemical incompatibility. Tiny channels can get
    plugged because ink designs are not “torture tested” with the same
    rigour as HP inks.
    A non-HP ink will not use the exclusive
    colourants contained in genuine HP ink, so colours are different to
    what was intended by the engineer who designed and optimised the
    “colour maps” in the printer. Wilhelm Imaging Research
    (wilhelm-research.com) shows that genuine OEM inks outlast after-market
    inks by a factor of 20x or more.

    has dedicated considerable resources to the research and development of
    Canon inks and photo paper to ensure Canon printer owners obtain
    best-quality photos. The combination of Canon’s ChromaLife100 inks and
    selected Canon photo papers allows photos printed at home to last as
    long as, if not longer than, photos developed by labs.

    has a range of high-quality photo paper available in a number of sizes.
    These have been optimised to be used with a variety of printers because
    Kodak doesn’t produce printers. Kodak’s EasyShare range of photo
    printers use a thermal dye-printing method where the ink is applied to
    the paper in layers. The final layer also provides a protective clear
    coating. The result is an instant waterproof and smudge-proof 6×4
    borderless print that will last for decades.