FIELD: instrument making.
SUBSTANCE: unit of toner amount measurement radiates image developed by toner with light, and unit to capture image developed by toner captures image according to reflected wave corresponding to light reflected by image developed by toner. Then amount of applied toner is calculated on the basis of peak position or height of reflected wave peak in compliance with information related to density of generated image developed by toner.
EFFECT: measurement of amount of applied toner in wide range from range of low densities to range of high densities, reduced dimensions of device.
16 cl, 27 dwg
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