Application of moiré technique to the measurement of modulation transfer functions (MTF) of printing systems |
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Authors: | Khosro Madanipour M. Taghi Tavassoly |
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Affiliation: | aPhysics Department, Faculty of Science, University of Tehran, Kargar Shomally, Tehran 14399-55961, Iran |
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Abstract: | It is shown theoretically and verified experimentally that by writing a low spatial frequency Ronchi grating by a computer and printing two copies of it on two transparencies by a printer, the modulation transfer function (MTF) of the printed image can be evaluated by measuring the transmittance of the superimposed gratings in a moiré fringe spacing. Application of the technique is quite simple and the results are reasonably reproducible. The technique does not require a high sensitive intensity detector and a very narrow slit for transmission scanning. Also, the presented technique can be applied to other imaging systems. |
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Keywords: | Modulation transfer function Optical transfer function Laser printer Moiré technique |
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