METHOD OF CORRECTING OUTPUT FROM IMAGE FORMATION APPARATUS AND IMAGE FORMATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a means of precisely reducing irregular concentrations in an array-like printhead for a long picture.

SOLUTION: An information of concentrations from each image N to be corrected (step S2) is obtained in the first place before a concentration information data DNi that corresponds to each recording pixel i is specified(step S4), and a deviation ▵DNi=DNi-DNave, iscalculated treating an average of the concentration data DNi as DNave (step S5). Then, a difference of the quantity of light, ▵ENi, corresponding to the deviation ▵ENi is obtained using a straight line of conversion (step S6), followed by (step S7) that calculates a correction quantity CNi=10(-▵ENi) that meets each recording pixel and (step S9) that composes the quantity of correction CNi calculated from each correction image N.

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