Patent ID: 7901732

Claim:
A process for producing a light amount adjustment member, which comprises the step of ejecting plural kinds of inks different in light amount adjustment function from each other from an ink-jet head, from which the inks are ejected, onto a transparent base material, on the surface of which an ink-receiving layer has been formed, while scanning the ink-jet head relative to the transparent base material, to apply the inks to the ink-receiving layer, thereby forming a light amount adjustment region, wherein during the scanning, the light amount adjustment region is formed by changing at least one of (i) the kind and number of the inks ejected from the ink-jet head, (ii) application intervals of ejecting the inks onto the transparent base material, and (iii) quantities of the inks ejected, such that the light amount adjustment function has a gradient, wherein a light transmittance when the ink having the smallest light amount adjustment function among the plural kinds of the inks is applied to the whole light amount adjustment region is at least 50%, and wherein, in a case of forming an area of the light amount adjustment region having a light transmittance equal to or lower than the light transmittance when the ink having the smallest light amount adjustment function among the plural kinds of the inks is applied to the whole light amount adjustment region, an ink selected from the plural kinds of inks an ink is applied to the entirety of the area.