An image forming apparatus comprising: a movable endless belt; an image forming unit (SY, SM, SC, SK) configured to form a toner image on said belt; a plurality of rollers (71, 72, 73) configured to stretch said belt at an inner peripheral surface side of said belt, wherein said rollers (71, 72, 73) include a first roller configured to form a transfer portion where the toner image is transferred from said belt onto a recording material and a second roller provided at a position which is adjacent to and at an upstream side of said first roller with respect to a movement direction of said belt; and an urging member configured to urge said belt toward an outer peripheral surface side of said belt in contact with an inner peripheral surface of said belt along a widthwise direction crossing the movement direction of said belt, wherein said urging member is provided at the inner peripheral surface side at a position which is adjacent to and upstream of said first roller and which is downstream of said second roller with respect to the movement direction of said belt, and wherein said urging member is supported at an upstream end portion thereof with respect to the movement direction of said belt and characterised in that the urging member includes a first urging portion contacting to said belt at a first contact portion and a second urging portion contacting to said belt at a second contact portion away from the first contact portion in the movement direction of said belt, said first urging portion and said second urging portion simultaneously urging said belt at the first and the second contact portions wherein said first urging portion is disposed adjacently to said second urging portion in a downstream side with respect to the movement direction of said belt, when a downstream end portion of said first urging portion with respect to the movement direction of said belt is a first contact point and a downstream end portion of said second urging portion with respect to the movement direction of said belt is a second contact point, a distance from the first contact point to a center of the transfer portion with respect to the movement direction of said belt is 25 mm or less. a movable endless belt; an image forming unit (SY, SM, SC, SK) configured to form a toner image on said belt; a plurality of rollers (71, 72, 73) configured to stretch said belt at an inner peripheral surface side of said belt, wherein said rollers (71, 72, 73) include a first roller configured to form a transfer portion where the toner image is transferred from said belt onto a recording material and a second roller provided at a position which is adjacent to and at an upstream side of said first roller with respect to a movement direction of said belt; and an urging member configured to urge said belt toward an outer peripheral surface side of said belt in contact with an inner peripheral surface of said belt along a widthwise direction crossing the movement direction of said belt, wherein said urging member is provided at the inner peripheral surface side at a position which is adjacent to and upstream of said first roller and which is downstream of said second roller with respect to the movement direction of said belt, and wherein said urging member is supported at an upstream end portion thereof with respect to the movement direction of said belt and characterised in that the urging member includes a first urging portion contacting to said belt at a first contact portion and a second urging portion contacting to said belt at a second contact portion away from the first contact portion in the movement direction of said belt, said first urging portion and said second urging portion simultaneously urging said belt at the first and the second contact portions wherein said first urging portion is disposed adjacently to said second urging portion in a downstream side with respect to the movement direction of said belt, when a downstream end portion of said first urging portion with respect to the movement direction of said belt is a first contact point and a downstream end portion of said second urging portion with respect to the movement direction of said belt is a second contact point, a distance from the first contact point to a center of the transfer portion with respect to the movement direction of said belt is 25 mm or less.