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Inkjet printing is a type of computer printing that recreates a digital image by propelling droplets of ink onto paper and plastic substrates. [1] Inkjet printers were the most commonly used type of printer in 2008, [2] and range from small inexpensive consumer models to expensive professional machines.
Droplet formation mostly depends on momentum, viscosity and surface tension. [2] In inkjet printing for example, an ink with a too high Ohnesorge number would not jet properly, and an ink with a too low Ohnesorge number would be jetted with many satellite drops. [3]
In this method, a stream of ink is released continuously from the nozzle. A garden hose jet stream is a good example of a continuous flow from a nozzle except CIJ nozzles are tiny (less than .005 inch or about 1/10 millimeter). The ink stream naturally breaks into separate drops due to Plateau–Rayleigh flow instability. Fluid streams can be ...
Three examples of droplet detachment for different fluids: (left) water, (center) glycerol, (right) a solution of PEG in water. In fluid dynamics, the Plateau–Rayleigh instability, often just called the Rayleigh instability, explains why and how a falling stream of fluid breaks up into smaller packets with the same total volume but less surface area per droplet.
The contact angle is the angle between a droplet of liquid and a paper surface. The molecular structure of co-styrene acrylate The molecular structure of co-styrene-maleic anhydride. In sizing, the strength and printability of paper is increased. Sizing also improves the hydrophilic character, liquid spreading, and affinity for ink. Starch is ...
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).
Ink can also transfer on to different parts of the page when the ballot paper is folded, potentially leading to a vote being rejected if the voter appears to have picked multiple candidates.
An ink cartridge or inkjet cartridge is a component of an inkjet printer that contains ink to be deposited onto paper during printing. [1] It consists of one or more ink reservoirs and can include electronic contacts and a chip to exchange information with the printer.