Patent ID: 6760055
Filing Date: 2004-07-06
Classification: G03B,H04N

Abstract:
A photographic processing apparatus which exposes photographic papers using a laser beam modulated based on image data comprising:a laser beam emitting device; a changeover means for changing the level of a driving signal to any one of a plurality of discrete levels according to a coloring characteristic of a photographic paper, the level of the driving signal determining the intensity of a laser beam outputted from the laser beam emitting device, wherein said changeover means comprises an adjuster for adjusting the level of the driving signal according to an environmental factor so that the intensity of a laser beam outputted from the laser beam emitting device is fixed; a filter which reduces the intensity of the laser beam outputted from the laser beam emitting device; and filter control means for producing a signal indicative of an amount to change the laser intensity to any one of a plurality of levels according to the coloring characteristic of the photographic paper and providing the signal indicative of the amount of change to the filter.