Sheet transporting apparatus and sheet processing apparatus using the same

A sheet transporting apparatus which transports a sheet in a forward direction to a processing section via a sheet transportation path, comprising:

• a sheet aligning mechanism which aligns a transportation posture of the sheet so a leading edge of the sheet is transported toward the processing section positioned along the transportation path;
• wherein the sheet aligning mechanism includes an adjusting mechanism which automatically adjusts the transportation posture of the sheet in accordance with a deformation degree of the sheet, the adjusting mechanism has a side position adjusting mechanism that is positioned to the side of the transportation path and adjusts a side regulation position of the sheet, orthogonal to the leading edge of the sheet, that is transported;
• and
• a controlling device which controls the adjusting mechanism and which includes a measuring section that measures the sheet deformation degree;
• wherein the sheet has a first face and a second face that is opposed to the first face, and when the sheet is transported in a state where the second face is directed upward in the sheet transportation path after the sheet is transported in a state where the first face is directed upward in the sheet transportation path, the leading edge of the sheet is switched and the side regulation position of the sheet is adjusted based on whether or not the second face is directed upward.