Copying apparatus with recircular automatic document feeder

Claim 1

A copying apparatus comprising, a document circularly conveying means including a document feed-in device to which a document is inserted, and a recirculating path through which said inserted document is circularly conveyed, to convey circularly said document in said recirculating path; an image processing means for forming and copying the document image; a paper feeding means for feeding a roll paper to said image processing means; a cutting means for cutting said roll paper according to a prescribed cutting signal; a first document detecting means disposed at said document feed-in device for detecting said document thereat to output a first document detecting signal; a document length detecting means for detecting the inserted document length; a document length memory means for storing said document length detected by said document length detecting means; a second document detecting means disposed in said recirculating path for detecting said document thereat to output a second document detecting signal; and a cutting control means outputting said cutting signal on the basis of said first document detecting signal of said first document detecting means when copying a first sheet, and outputting said cutting signal on the basis of said document length stored in said document length memory means, and said second document detecting signal of said second document detecting means when copying a second sheet onward.