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Dots per inch. A close-up of the dots produced by an inkjet printer at draft quality. Actual size is approximately 1⁄4 by 1⁄4 inch (6 by 6 mm). 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 ...
Lines per inch (LPI) is a measurement of printing resolution. A line consists of halftones that is built up by physical ink dots made by the printer device to create different tones. Specifically LPI is a measure of how close together the lines in a halftone grid are. The quality of printer device or screen determines how high the LPI will be.
An image scanner (often abbreviated to just scanner) is a device that optically scans images, printed text, handwriting, or an object and converts it to a digital image. The most common type of scanner used in offices and in the home is the flatbed scanner, where the document is placed on a glass window for scanning.
Intentionally blank pages are usually the result of printing conventions and techniques. Chapters conventionally start on an odd-numbered page ; therefore, if the preceding chapter happens to have an odd number of pages, a blank page is inserted at the end. Book pages are often printed on large sheets because of technical and financial ...
DPI against PPI[edit] DPI (Dots Per Inch) is a unit of measure that only exist in a physical world, a dot on something physical; paper, plastic, metal etc. It can NEVER exist in a digital world. PPI (Pixel Per Inch) is a unit of measure that only exist in a digital world. It can never exist in a physical world world.
Dot matrix printing. Dot matrix printing, [1] sometimes called impact matrix printing, is a computer printing process in which ink is applied to a surface using a relatively low-resolution dot matrix for layout. Dot matrix printers are a type of impact printer that prints using a fixed number of pins or wires [2][3] and typically use a print ...
Near letter-quality (NLQ) printing is a process where dot matrix printers produce high-quality text by using multiple passes to produce higher dot density. [1] The tradeoff for the improved print quality is reduced printing speed. Software can also be used to produce this effect. [2][3] The term was coined in the 1980s to distinguish NLQ ...
Inkjet photo paper. Photo paper is inkjet paper specifically for printing photographs. It is a bright white due to bleaching or pigments such as titanium dioxide, and has been coated with a highly absorbent material that limits diffusion of the ink. Highly refined clay is a common coating to prevent ink spread.