Patent ID: 8437684

Claim:
An image forming apparatus capable of both sides printing, comprising: a register roller to adjust a sheet conveyed from a sheet feeding section in a first conveyance direction by contacting a leading edge section of the sheet and feed the sheet; an image forming section to form an image on one surface of the sheet conveyed from the register roller, and a reversal section to convey the sheet in a second conveyance direction which is different from the first direction, with a first side surface section of one side of the sheet as a leading edge section of the sheet on which the image has been formed by the image forming section, and feed the sheet again along the first conveyance direction with the leading edge section which has been contacted with the register roller as a leading side after turning over the sheet by swapping positions of the first side surface section and a second side surface section, wherein the reversal section comprises: a first reversal section having; a first conveyance roller to convey the sheet conveyed from the image forming section along the first conveyance direction to a first position where the conveyance direction of the sheet is switched from the first conveyance direction to the second direction, and a first reversal roller to convey the sheet, having been conveyed to the first position through the first conveyance roller, with the first side surface section of the sheet as the leading section in the second conveyance direction, a second reversal section having; a second reversal roller to convey the sheet, conveyed along the second conveyance direction through the first reversal roller, to a second position so as to switch the conveyance direction of the sheet from the second conveyance direction to the first conveyance direction, and a second conveyance roller to convey the sheet, having been conveyed to the second position through the second reversal roller, in the first conveyance direction with the leading edge section which has been contacted with the register roller as a leading edge side, and a reversal path, disposed between the first reversal section and the second reversal section, to swap the positions of the first side surface section and the second side surface section of the sheet to be conveyed from the first reversal section and to convey the sheet to the second reversal section, wherein the second reversal section comprises a correction member to correct bias and skew of the sheet by contacting with the first side surface section of the sheet conveyed from the first reversal section via the reversal path and the correction member can be moved in a width direction of the sheet in accordance with a sheet size in case the sheet is conveyed with reference to a center of the sheet.