Fuji Photo Film Company, Limited

Fujifilm Corporation

Yuji Shimoyama

Daisuke Nakaya

Yoji Okazaki

Takeshi Fujii

Katsuto Sumi

Takao Ozaki

Morimasa Sato

Norihisa Takada

Takayuki Uemura

Mitsutoshi Tanaka

Yoko Takada

An image-drawing device, which carries out image-drawing on the basis of image-drawing data, has image-drawing heads which are moved relatively in a predetermined scanning direction along an image-drawing surface. The image-drawing heads have a large number of image-drawing elements lined-up two-dimensionally within a plane which is parallel to the image-drawing surface. The straight lines along which the plural image-drawing elements are lined-up are inclined, with respect to the scanning direction, at a predetermined inclination angle such that an image-drawing magnification has an effective value after a decimal point. A data allocating unit allocates the image-drawing data to the respective image-drawing elements at predetermined timings corresponding to a resolution determined in accordance with the image-drawing magnification. In this way, resolution in the scanning direction can be increased without making a scanning speed of the image-drawing heads slower or making a modulation speed of the image-drawing elements faster.

Image-drawing device and image-drawing method

Light modulated by a spatial light modulator is projected onto photosensitive material and the photosensitive material is exposed to light in a predetermined pattern. The action of the spatial light modulator is controlled so that the amount of the light projected onto the photosensitive material is changed in at least two stages according to the part of the photosensitive material.

Exposure method and exposure system

A method of correcting image read signals including the steps of reading an image line by line by a linear sensor; determining an average value when a plurality of lines of a plurality of blind pixels of the linear sensor are read, computing the signals read from the image by using the average value so as to correct an influence of a dark current of said linear sensor, and outputting said computed signal as the image read signal. According to the present invention, the dark current can be accurately obtained according to the read state without being affected by errors in measurement due to the variations in each of the one-line pixels or due to noise.

Method and apparatus of correction image read signals by removing the

An original document image is irradiated with light emitted from a light source, and light reflected from or passed through the original document image is applied to a line sensor for reading the image. A maximum output value of the line sensor is determined within a linear characteristic region thereof with respect to the amount of exposure of the line sensor to the light reflected from or passed through the original document image. The amount of light emitted from the light source is regulated within the maximum output value to determine a sensitivity correcting value for the line sensor with respect to a reference object, and the sensitivity correcting value is stored as corrective data. An image signal from the line sensor is corrected with the corrective data when the original document image is read.

Shading correcting method in image reading device

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Kanagawa, Japan

Yuji Shimoyama