Sheet registration device and an image forming apparatus having the same

A sheet registration device comprising:

• a sheet transporting means that transports a sheet in a transport direction;
• a sheet positioning member which is disposed on a side of a sheet transport path and in parallel with the transport direction;
• a lateral moving means for moving the sheet transported along the sheet transport path toward the sheet positioning member;
• a moving means for moving the sheet transporting means in a direction perpendicular to the transport direction, the sheet transporting means is located downstream from the lateral moving means;
• an acquiring means for acquiring information about the sheet transported along the sheet transport path;
• a storage means that stores information about the sheet and an amount of movement;
• and
• a controlling means that reads an amount of movement corresponding to the information about the sheet and controls a movement operation of the moving means.

An image fonning apparatus having a sheet supply unit, a sheet registration unit, an image transfer unit, and a sheet discharge unit, the sheet registration unit comprising:

• sheet transporting means for transporting a sheet in a transport direction thereof;
• a sheet positioning member which is disposed in a side of a sheet transport path and in parallel with the transport direction;
• lateral moving means for moving a sheet transported along said sheet transport path, toward said sheet positioning member;
• detecting means for detecting a side edge of the sheet transported along said sheet transport path;
• moving means for moving said sheet transporting means in a direction perpendicular to the transport direction, said sheet transporting means being disposed downstream from said lateral moving means;
• and
• controlling means for, on the basis of a detection result of said detecting means, controlling a movement operation of said sheet transporting means by said moving means.

An image forming apparatus having a sheet supply unit, a sheet registration unit, an image transfer unit, and a sheet discharge unit, the sheet registration unit comprising:

• sheet transporting means that transports a sheet in a transport direction;
• a sheet positioning member which is disposed on a side of a sheet transport path and in parallel with the transport direction;
• a lateral moving means for moving the sheet transported along the sheet transport path toward the sheet positioning member;
• a moving means for moving the sheet transporting means in a direction perpendicular to the transport direction, the sheet transporting means is located downstream from the lateral moving means;
• an acquiring means for acquiring information about the sheet transported along the sheet transport path;
• a storage means that stores information about the sheet and an amount of movement;
• and
• a controlling means that reads an amount of movement corresponding to the information about the sheet and controls a movement operation of the moving means.