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"Top-Up" Bottled inks for the above HP Printers Click here
Another advancement included in HP 901 cartridges is new, dual-drop-volume
technology. This HP technology enables finely detailed graphics and images,
up to 4800x1200 dpi, without the need for the lighter, photo dye-load inks
used in 6-ink printing. In dual-drop-volume printing, the tri-colour ink
cartridge contains specially formulated full dyeload colour inks that are
fired onto the page in two different ink droplet volumes. These ink droplets
can be as small as 1.3 picoliters (pl) and as large as 5 pl. About 3.8
billion of these 1.3 picoliter droplets would fit in a teaspoon. In
dual-drop-volume modes, the printer can fire any combination of small or
large ink droplets on a given print position—small and large droplets
together, just small drops or just large. These combinations of ink droplets
are determined by the printer in order to provide the optimum print quality
and speed. Dual-drop volume printing is used when printing in Normal, Best
and Maximum-dpi print modes on select HP photo and brochure papers.4
Customers can enable the Maximum dpi setting in the Advanced tab of the
printer driver software when printing on HP Advanced Photo Paper.
The new ink cartridge technology also uses high-quality,
high-resolution half toning to deliver enhanced gradient tones for smooth,
uniform colour output. Half toning is the process used by inkjet printers to
lay down different combinations of ink droplets and create the range of
colours seen on the printed page. Generally speaking, colour print quality
is improved when small ink drops are distributed evenly, with minimal
overlap between ink dots. Printers with new cartridge technology achieve
these optimal dot-placement patterns using improved half toning algorithms,
updated for optimal performance with HP’s new dual-drop-volume technology.
Customers see a large colour gamut, enjoy outstanding colour
accuracy and get smooth transitions while using fewer inks and eliminating
the need for optional photo cartridges. Customers benefit from HP advanced
half toning methods in all print modes. Previously, advanced half toning was
available only with the Maximum dpi setting. |
