FIXING DEVICE FOR SHEET ELECTROPHOTOGRAPHIC PRINTER

PROBLEM TO BE SOLVED: To stably fix a sheet of paper conveyed at a high speed by heat, without wrinkling the sheet.SOLUTION: A fixing drum 9 capable of heating an outer peripheral surface with a heater incorporated therein is provided in a position separated downstream from the furthest downstream sheet transfer part of each of printing units 1a and 1b, so as to be rotated at a peripheral speed that is the same as the running speed of a sheet in the printing unit. A first sprocket 10 is provided at a place adjacent to the furthest downstream sheet transfer part of the printing unit. A second sprocket 11 having a pitch circle diameter substantially the same as the circular diameter of the fixing drum and rotated integrally with the fixing drum is provided in the same axial position as the fixing drum. A conveyance chain 12 is wound around each of the first and second sprockets, the conveyance chain having catching nails 13 and being used to convey a sheet while being wound around the periphery of the fixing drum by catching a sheet run from the furthest downstream transfer part, by use of the catching nails. A pressure application member is disposed around and in pressure contact with the periphery of the fixing drum.