Konica Corporation

Madoka Shoji

Tomoaki Tamura

Chie Nemoto

Takaichi Hayashida

Keita Kimizuka

An image-forming apparatus processes image signals based on a predetermined gradation-converting curve. The predetermined gradation-converting curve includes at least one of: a first gradation in which a maximum absolute-value of a difference between a lightness gradation curve and its smoothed curve in a range of about 1/10 of its gradation number is not greater than 1; a second gradation in which a maximum absolute-value of first-order differential values of a difference curve between a lightness gradation curve and its smoothed curve in a range of about 1/10 of its gradation number is not greater than 100; and a third gradation, in which a maximum absolute-value of first-order differential values of a difference curve between a first smoothed curve in a range of about 1/100 of a gradation number and a second smoothed curve in a range of about 1/10 of a gradation number, is not greater than 100.

Image-forming apparatus and method for evaluating gradation characteristic

In a camera provided with image-pickup elements for receiving light to form an image of a subject, for converting the light into electric signals and for producing image information of the image of the subject by the electric signals; there are further provided a print information producing device to produce print information for printing the image information; and a transmitor to transmit the image information and the print information.

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Hino, Japan

Madoka Shoji