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Individual coloured droplets of ink are visible; this sample is about 150 DPI. Dots per inch (DPI, or dpi [1]) is a measure of spatial printing, video or image scanner dot density, in particular the number of individual dots that can be placed in a line within the span of 1 inch (2.54 cm).
The ideal pixel density (PPI) depends on the output format, output device, the intended use and artistic choice. For inkjet printers measured in DPI it is generally good practice to use half or less than the DPI to determine the PPI. For example, an image intended for a printer capable of 600 dpi could be created at 300 ppi.
It was one of the first scanners on the market to support the TWAIN API, for which Hewlett-Packard was a principal author (as part of the TWAIN Working Group). Like the ScanJet Plus, the ScanJet IIp scans up to 300 dpi natively at up to 8-bit grayscale; alternatively it can output 600 dpi, interpolated from 300 dpi.
The advantage of DjVu is that it is possible to take a high-resolution scan (300–400 DPI), good enough for both on-screen reading and printing, and store it very efficiently. Provided the images are reasonably clean and the most aggressive compression settings are used, a couple hundred 600-DPI black-and-white text scans can be stored in less ...
The 4L used the 300 DPI [8] PX engine, with the 4P using the upgraded 600 DPI [9] PX-II engine. [1] The 4L was the first LaserJet with power-saving technology that turned off the printer when not in use. [ 5 ]
Occasional Chromebook resolution with 96 DPI; see HP Chromebook 14A G5. ... 300 4∶3: 4∶3: 1∶1: 120,000: 120.00K3 Teletext and Viewdata 40×25 character screens ...
ScanSnap S300 – portable scanner, 10 sheet ADF, 600 dpi optical resolution, 8 to 0.5 pages per minute depending on mode and AC availability [23] ScanSnap S300M – Macintosh version of S300 with similar specifications [ 24 ]
At 300 dpi, there are 90,000 dots per square inch (300 dots per linear inch). A typical 8.5 × 11 sheet of paper has 0.25-inch (6.4 mm) margins, reducing the printable area to 8.0 by 10.5 inches (200 mm × 270 mm), or 84 square inches. 84 sq/in × 90,000 dots per sq/in = 7,560,000 dots. 1 megabyte = 1,048,576 bytes, or 8,388,608 bits, which is ...