
Here is a guide to assistance you lot position which printing method has been used. The best method is to await real closely alongside a loupe at the alphabetic character forms together with therefore confirm past times looking at the halftone dots themselves. Although these images were taken at nearly 200x to demo equally much special equally possible, they are non that different than what would last seen past times the human oculus nether a loupe at 10-20x.
Offset lithography
Type edges are abrupt together with good defined. The ink density is similar across the letter. The newspaper simply about the printed ink is unremarkably clear/unprinted. The sharpness together with consistent ink density is reflected inward the halftone dots. Note that this same abrupt appearance occurs if the halftone concealment used is FM (the 3rd image) rather than AM (second image).



Gravure
All graphic elements appear halftone screened therefore the edges of text demo a petroleum halftone appearance. Although presswork color may appear rich, viewed nether a loupe, the halftone dots may receive got a watery appearance. Individual dots may appear to receive got a hole inward their centers.


Flexography
Flexography uses a rubber-like plate that, nether pressure, transfers ink to the substrate. This results inward type that ofttimes appear to last surrounded past times a sharp-edged "halo." The same effect, but inward opposite, occurs inward the halftone dots which may receive got night edges together with lite centers. Both type together with halftone dots unremarkably receive got real abrupt together with good defined edges. Note that this dot sharpness besides occurs alongside an FM concealment printed alongside flexo (third image).



Electrophotographic (a.k.a. Light Amplification by Stimulated Emission of Radiation toner, Xerographic)
With electrophotographic systems the ikon is created past times depositing a pulverisation toner. This results inward a "sprayed on" appearance. Type edges are soft together with at that spot are ofttimes specks of wayward toner on what should last unprinted paper. On unopen seek out you'll probable run across patently random Yellow dots. Those are anti-counterfeiting tags. Halftone dots receive got a similar fuzzy appearance.


Inkjet
Under a loupe, ink jet type has a "blocky" "chunky" border appearance. This is caused past times the depression resolution/large droplet size typical of these devices (despite the claims of high dpi). Sometimes at that spot volition last the occasional "satellite" ink droplet close the alphabetic character (two are shown inward the ikon below). Because of the agency the ink is sprayed onto the substrate, halftoned areas appear to last done alongside an FM screen. However, dissimilar the FM screening used inward commencement lithography, at that spot is unremarkably no apparent blueprint or scheme to the dots.


Engraving
Engraving is typically used for currency/bank banking concern annotation printing, stamps, together with sometimes real exclusive stationary. Type is real crisp together with sharp. The procedure is capable of extremely fine special together with equally a outcome is used to impress safety microtype. Halftones are unremarkably created alongside trace effects rather than a conventional halftone screen. Softly passing one's fingers over the printed move volition disclose a tangible texture due to the raised ink.


Thermography
Thermography is commonly used on marriage invitations, letterheads, trace of piece of job organisation cards, together with greetings cards equally an attractive option to the to a greater extent than expensive engraving process. Type has a raised surface texture similar to engraving however, alongside thermography type appears to last printed nether a transparent coating. The depression resolution of this procedure makes it unsuitable for lineament halftone screening.

LCD display (print to concealment - simply for fun)
The alphabetic character "e" equally displayed dark against a white background on my laptop's display. Since the LCD display produces no lite of its own, it requires a mutual frigidity cathode fluorescent light situated behind the LCD panel. Electronically-modulated pixels filled alongside liquid crystals are arrayed inward front end of the lite root to hit images inward color. Passing the backlight through the red, green, together with bluish liquid crystals recreates the backlight white, piece blocking the backlight creates black. Anti-aliasing of the alphabetic character helps to shine the shape of the alphabetic character bird together with compensates for the relatively depression resolution of the concealment itself. Note that the pixels forming the ikon are non foursquare but rectangles.

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