Image reading and reproducing apparatus

摘要

The improved image reading and reproducing apparatus comprising a scanner which reads an image on an original photoelectrically, an image processor which performs specified image processing on image data output from the scanner and a printer which writes the image data output from the image processor into a memory, reads the recording image data sequentially from the memory and records an image on an auxiliary scanned recording material in accordance with the recording image data, satisfies the following relation (1):Tr>/=(82.5/Vp)+ alpha (1)where Tr is the time of reading one frame of the original image from the start of image reading with the scanner to the storage of obtained recording image data in the memory in the printer; Vp is the speed of auxiliary scanning of the recording material in the printer; and alpha is the overhead time which occurs unavoidably between the recordings of two successive frames of the image in the printer. This image reading and reproducing apparatus ensures that each of its functional parts such as the scanner, image processor and recorder suffers only limited time losses such as interruptions of the operation of that part due to other parts, thereby allowing for efficient and high-speed outputting of the finished prints.