Fuji Photo Film Company, Limited

Yu Tojo

Takahiro Hideshima

Izumi Watanabe

Tatsunari Arito

Akira Ichizuka

Kazuteru Kowada

An image is read by moving a line sensor relative to the image in a subsidiary scanning direction perpendicular to the direction of a pixels array of the line sensor. An image processor receives image signals from the sensor and produces an output image magnified relative to the image in accordance with a magnification ratio. The magnification ratio falls into one of n contiguous magnification ratio ranges between a reference magnification ratio and a minimum magnification ratio. The moving speed of the sensor relative to the image is set as a function of the magnification ratio such that, within each magnification ratio range i, for i=2 to n, the moving speed of the sensor decreases from a maximum speed at a lowest magnification ratio in the magnification ratio range to the maximum speed decreased by 1/i at a highest magnification ratio in the magnification ratio range, and, for i=1, the moving speed of the sensor decreases from the maximum speed at a lowest magnification ratio in the magnification ratio range to a reference speed at a highest magnification ratio in the magnification ratio range.

Method and apparatus for reading and processing an image at a rate

A method of preventing the occurrence of blackened margins on a photosensitive sheet processed in an electrophotographic apparatus. The method comprises the steps of calculating a first sheet transporting length by which the photosensitive sheet is required to be transported until the forward end of an image area of the photosensitive sheet within which an image is allowed to be formed is charged with electricity and a second sheet transporting length by which the sheet is required to be further transported until the rear end of the image area is charged with electricity. A charging device is caused to turn ON when the actually transported length of the photosensitive sheet attains the calculated first sheet transporting length, and then is deactuated to turn OFF when the additionally transported length of the photosensitive sheet attains the calculated second sheet transporting length. Thus the photosensitive sheet can be charged with electricity only in its image area regardless of the overall length of the photosensitive sheet and of the position in which the photosensitive sheet is placed for exposure to the image-forming light. As a result, the margins of the photosensitive sheet, although they have not been exposed to the image-forming light or to erasing light, nevertheless attract no toner particles and so are not blackened.

Method of preventing the occurrence of blackened margins on

A method of fixing a frame image which has not been fixed due to burnout of a fixing lamp or a power failure. Such unfixed frame is detected, and the address thereof is stored in memory. When processing is resumed, the address of the unfixed frame is read in order to fix the frame, and thereafter, the address of the unfixed frame is erased. It is therefore possible to fix any unfixed frame reliably and automatically without any fear of the operator forgetting to effect fixing of such unfixed frame. Also disclosed is an apparatus which may suitably be employed to carry out the above-described method.

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Kanagawa, Japan

Yu Tojo