Obliquely traveling sheet correcting device and image forming apparatus

An image forming apparatus, comprising:

• first sheet conveyer means for conveying a sheet;
• second sheet conveyer means disposed downstream of said first sheet conveyer means for conveying the sheet;
• stopping means disposed in the vicinity of said second sheet conveyer means for abutting against the leading edge of the sheet conveyed by said first conveyer means to thereby stop the leading edge of the sheet, said stopping means for swinging between a position of a first attitude where it abuts against the leading edge of the sheet and a second position attitude where it permits the sheet to pass therethrough, wherein said stopping means causes the sheet to form a loop when in the position of the first attitude as the sheet is conveyed by said first sheet conveyor means and is moved to the position of the second attitude by a force from the sheet after the sheet forms the loop, and as said stopping means moves to the position of the second attitude, the leading edge of the sheet stays abutted against said stopping means at least until clamped by said second sheet conveyor means;
• and
• urging means for urging said stopping means to the position of the first attitude;
• and
• image forming means for forming an image on the conveyed sheet.

A sheet conveyer device, comprising:

• first conveyer means for conveying a sheet;
• second conveyer means disposed downstream of said first conveyer means for conveying the sheet while clamping it;
• and
• stopping means movable between a first position where it stops the leading edge of the sheet conveyed by said first conveyer means and a second position where it permits the sheet conveyed by said first conveyer means to pass therethrough, wherein said stopping means causes the sheet to form a loop when in the position of the first attitude as the sheet is conveyed by said first conveyor means and is moved to the position of the second attitude by a force from the sheet after the sheet forms the loop, and as said stopping means moves to the position of the second attitude, the leading edge of the sheet stays abutted against said stopping means at least until clamped by said second conveyor means, and wherein when said stopping means is located at the first position, it abuts the leading edge of the sheet upstream of said second conveyer means.

A sheet conveyer device comprising:

• a sheet conveyer means for conveying a sheet;
• a sheet conveyer roller disposed downstream of said sheet conveyer means for conveying the sheet, wherein said sheet conveyer roller is divided into a plurality of rotary bodies each disposed on a shaft;
• a plurality of stopping members rotatably supported on said shaft for abutting against the leading edge of the sheet conveyed by said sheet conveyer means to thereby stop the leading edge of the sheet, wherein each of said stopping members rotates between a first position where it abuts against the leading edge of the sheet and a second position where it permits the sheet to path there through, wherein said plurality of stopping members causes the sheet to form a loop when in the first position as the sheet is conveyed by said sheet conveyor means and is moved to the second position by a force from the sheet after the sheet forms the loop, and as said stopping members move to the second position, the leading edge of the sheet stays abutted against said plurality of stopping members at least until clamped by said sheet conveyor roller, and each of said stopping members is disposed between said rotary bodies;
• a connecting member for connecting said plurality of stopping members integrally;
• and
• urging means for urging said plurality of stopping members to said first position.