Konica Corporation

Yasuaki Satoh

Akira Kida

Taku Saito

Nobu Nakane

Yoshiaki Yamanaka

Katsutoshi Iwai

Kiyoshi Minamisawa

Akemi Kosugi

An exposure apparatus in which a photographic light-sensitive material is exposed to a light image of an original, includes: a light illuminating member for illuminating a light to the original; an optical member for projecting a light transmitted through or reflected on the illuminated original onto an exposure position as a line image of the original; a material conveyor for conveying the material at a constant speed while the line image of the original is projected onto the material; a moving member for moving the original at a definite speed while the line image of the original is projected onto the material; and a start position determining member for determining a start position of the original at which the moving member starts moving according to magnification of the projected image of the original or image density of the original. The moving member starts moving the original from the start position, thereby the definite speed of the original while the slit image of the original is projected onto the material, is varied.

Scanning exposure apparatus

An image reading apparatus has a sensing unit to repeat a scanning on an original image with a predetermined time interval between scans so as to obtain a new set of image information data with each scan, a memory unit to store the image information data and a control unit which commands the memory unit to read the image information stored therein. The memory unit has two memory areas, and each of the two memory areas is alternately updated with each scan for storing a set of the image information data. In response to a read command from the control unit, the memory unit starts to read the image information data from one of the memory areas which is not used for storing at the time the command is issued.

Image reading apparatus

In an exposure control method for photographic printing, average transmitted light from an original on an photographic film is color-separated, and an average photometric value for each color is obtained by measuring each color-separated light. A tentative exposure amount is determined based on the average photometric value. A color dominancy in the original image is evaluated by an analysis of image information which is obtained through a color-separated scanning of the original image, and the tentative exposure amount is corrected based on an evaluation result.

Exposure control method for photographic printing

A method for determining an exposure for printing an original image of a photographic film onto a photographic paper. The method includes the steps of; scanning an image on a photographic film to obtain an image data; obtaining plural region characteristic values which includes a maximum density value, a minimum density value, and an average density value in each of plural areas of an image for example; obtaining plural image characteristic values from the region characteristic values; calculating a linear first order sum of the image characteristic values; and selecting one of plural predetermined sets according to the result of the calculating step. The exposure is determined with the regression equation predetermined for one of the predetermined sets.

Growing community of inventors

Hino, Japan

Yasuaki Satoh