Image reading arrangement

An image reading arrangement which comprises:

• an optical projecting mechanism for projecting an image of an original document;
• an image reading device for converting the projected image into an electrical image signal;
• a first magnifying means associated with said optical projecting mechanism for optically enlarging the size of the image to be projected onto said image reading device;
• a second magnifying means including a memory means for temporarily storing an electrical image signal and arranged to electrically enlarge the size of an image by controlling writing and reading of the image signal into and from said memory means;
• a magnification input means for inputting enlarging magnification when the size of the image of the original document is enlarged;
• a region input means for inputting data designating a region on the original document to be read and outputted;
• and
• a control means for controlling said first and second magnifying means in response to said magnification input means and said region input means;
• said control means effects the control in such a manner that, when an entire region as designated can not be read if only said first magnifying means is operated at the input magnification, said control means sets magnification to be used in each of said first and second magnifying means so as to cause said first and second magnifying means to function simultaneously.