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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.
A laser printer applies toner through a controlled electrostatic charge, and may be in the range of 600 to 2,400 DPI. The DPI measurement of a printer often needs to be considerably higher than the pixels per inch (PPI) measurement of a video display in order to produce similar-quality output. This is due to the limited range of colours for ...
This chart shows the most common display resolutions, with the color of each resolution type indicating the display ratio (e.g., red indicates a 4:3 ratio).
600 × 829 (273 KB) Carrite (talk | contribs) Program for the game between the Philadelphia Eagles and the Pittsburgh Steelers of the National Football League, October 17, 1953. Stock cover art by Larry Tisdale. Published as ''Philadelphia Eagles vs. Pittsburgh Steelers: Connie Mack Stadium, Philadelphia, October 17, 1953. No copyright notice.
The resolution used is usually from 150 to 300 dpi, although the hardware may be capable of 600 or higher resolution; this produces images of text good enough to read and for OCR, without the higher demands on storage space required by higher-resolution images.
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 ...
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 ]
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.