Abstract: An image formation system includes an image data outputting device for outputting three-primary-color image data for forming a full color image, and a printer selectively writing the image data from the image data outputting device in an optical image memory by beam light for printing the image out on a recording medium, the printer including, a specifying device for specifying an arrangement of images written in the optical image memory, and a writing device dividing the single optical image memory into sections corresponding to the specified arrangement, for writing primary color images into the sections, the optical image memory being a memory where a stored image is optically recognizable and can be repetitively read out.

Abstract: An image formation apparatus includes a writing device for selectively writing image data on a liquid crystal cell by beam light, a printer for printing out an image on a recording medium, an erasing device for erasing the image written on the liquid crystal cell by a beam of light from a specified region, and a controller for controlling the writing device for writing a novel image in the region from which the previously written image has been erased.

Abstract: An image writing device including a beam source emitting laser beam, a memory for storing a plurality of frames of image data, a modulator for modulating the laser beam with the image data, at least one liquid crystal cell, a scanner for scanning the liquid crystal cell with the laser beam sweeping the same, a shift device for shifting the liquid crystal cell in the direction orthogonal to the scanning direction, and controller for reading the image data from the memory and actuating the laser beam to write the plurality of frames of images in different areas on the liquid crystal cell.

Abstract: Image formation device includes an optical image memory which is shaped like a flat board and includes an image area formed almost in the center portion for storing an image and a void area surrounding the image area, where no image is written, the image stored being optically recognizable and able to be repetitively read; image writing means for writing the image in the optical image memory by the selectively irradiating the image area in accordance with data on a desired image; exposing means for exposing a photosensitive material by irradiating light through the optical image memory to the photosensitive material from which color coupler in a non-exposed portion is discharged by applying pressure; light control means for controlling a width of light irradiated to an area of the photosensitive material through the void area in the direction of the widthwise extension of the photosensitive material so that the width of light is identical with the width of the photosensitive material; and developing means for

Abstract: An image forming apparatus which includes a bucket for accommodating a cartridge holding a roll of a photosensitive sheet and a take-up shaft for taking up the photosensitive sheet after use, the bucket having an exposure plate disposed above the cartridge, a slidable means engageable with a slidable means provided on the image forming apparatus so as to enable the bucket to be slidably mounted in and dismounted from the image forming apparatus, and a positioning means for securing the exposure plate in its optically proper position.

Abstract: Data receiving-and-transmitting stations are connected in a ring-shaped network, each transmitting data packets normally in the order in which they are received. Each station can identify a high-priority data packet and is programmed to transmit a high-priority data simutaneously with the normal-priority data packet which has been to be transmitted next according to the order in which it was received.

Abstract: An image data composing system and process is described which includes initially separating image data obtained from an original into a plurality of items of primary image data when the original bears a polychrome image. The items of image data, as separted for primary colors, are then stored in a plurality of memories. Next, the image data obtained from the original is converted to monochrome image data comprising first and second level value data when the original bears a monochrome image. This monochrome image data is then entered into at least one specified memory, included in the previously mentioned memories, and first level value is written in addresses corresponding to first level value data. Then, the binary image data is entered into the remaining memories and the second level value is written in addresses corresponding to the first level value data. Finally, the image data is delivered from the memory device to an image forming apparatus from item to item.

Abstract: A color processor which first writes each line of color data into a frame memory on the receipt of the color data from the color scanner which optically scans the color document and reads red, green, and blue components that are resolved from an individual picture element. Then, the processor reads color data before printing out the color image data via the color printer unit comprising the following elements: a memory controller, which controls the frame memory and incorporates a writing address counter and a reading address counter; an address controller which controls the writing/reading address counters; a timing circuit which controls the operations of the frame memory and the address controller by applying the predetermined drive timing; and unit for providing the timing circuit with predetermined drive timings in order that the reading of each line of color data can be synchronized with the writing of color data into the frame memory by the data-write and data-read timing clocks.