A facsimile apparatus which includes a control part, first and second rolls of first and second recording sheets of different sizes, a platen roller being driven to transport a recording sheet selectively being fed from either the first roll or the second roll, a thermal recording head being provided...http://www.google.com.tw/patents/US5268766?utm_source=gb-gplus-share專利 US5268766 - Facsimile apparatus with two different sized paper supply rolls having timer/counter to choose primary supply roll to prevent curling
