SHEET CARRYING DEVICE AND IMAGE FORMING DEVICE PROVIDED THEREWITH

PROBLEM TO BE SOLVED: To carry a sheet without a fold and mark (scratch) by a roller on the tip of a sheet. SOLUTION: This sheet carrying device 20 has carrying means 1, 2 for carrying the sheet and carrying rotary body couple 3, 4 positioning in the downstream of the sheet carrying direction of the carrying means. The sheet carrying speed of the carrying means 1, 2 is made to V1 (mm/sec), the periphery speed of the carrying rotary body couple 3, 4 is made to V2 (mm/sec) and when the tip of the sheet makes contact with the rotary body 4 of oneside of the carrying rotary body couple, a collision angle between the tangential line passing the contact part of the rotary body 4 and the tip is made to θ and the friction coefficient between the sheet and roller is made to μ. In case of μ=2 [(1/cosθ×V1)-430]/3 and in the case of 1.0