Sheet finisher having an angularly movable stapler and image forming system including the same

An image forming system comprising:

• an image forming apparatus configured to form a toner image on a recording medium in accordance with input image data;
• and
• a sheet finisher for executing preselected processing with the sheet introduced into said sheet finisher from said image forming apparatus and then discharging said sheet, said sheet finisher comprising:
• stacking means for temporarily stacking sheets sequentially delivered thereto;
• jogging means for jogging the sheets within said stacking means;
• stapling means for stapling a sheet stack jogged in said stacking means;
• a guide shaft supporting said stapling means such that said stapling means is movable along said guide shaft in a direction perpendicular to a direction of sheet conveyance and angularly pivots about a single axis, said single axis being an axis of said guide shaft;
• and
• moving means for moving said stapling means along said guide shaft in the direction perpendicular to the direction of sheet conveyance, said moving means includes cam means for controllably regulating movement of said stapling means, said cam means being fixedly mounted on a body of said sheet finisher,
• wherein said stapling means angularly pivots about the axis of said guide shaft by means of said cam means as said stapling means moves along said guide shaft.

A sheet finisher comprising:

• a sheet stacking device configured to receive sheets sequentially delivered thereto;
• a stapler configured to staple a sheet stack in said sheet stacking device;
• a guide shaft supporting said stapler, wherein said stapler is movable along said guide shaft in a direction perpendicular to a direction of sheet conveyance and angularly pivots about a single axis, said single axis being an axis of said guide;
• and
• a moving device configured to move said stapler along said guide shaft in the direction perpendicular to the direction of sheet conveyance, said moving device includes a cam configured to controllably regulate movement of said stapler, said cam being fixedly mounted on a body of said sheet finisher,
• wherein said stapler angularly pivots about the axis of said guide shaft by means of said cam as said stapler moves along said guide shaft.

A sheet finisher comprising:

• a sheet stacking device configured to receive sheets sequentially delivered thereto;
• a jogging device configured to jog the sheets received within said sheet stacking device;
• a stapler configured to staple a sheet stack jogged in said sheet stacking device;
• a guide shaft supporting said stapler such that said stapler is movable along said guide shaft in a direction perpendicular to a direction of sheet conveyance and angularly pivots about a single axis, said single axis being an axis of said guide shaft;
• and
• a moving device configured to move said stapler along said guide shaft in the direction perpendicular to the direction of sheet conveyance, said moving device includes a cam configured to controllably regulate movement of said stapler, said cam being fixedly mounted on a body of said sheet finisher,
• wherein said stapler angularly pivots about the axis of said guide shaft by means of said cam as said stapler moves along said guide shaft.

An image forming system comprising:

• an image forming apparatus configured to form a toner image on a recording medium in accordance with input image data;
• and
• a sheet finisher for executing preselected processing with the sheet introduced into said sheet finisher from said image forming apparatus and then discharging said sheet, said sheet finisher comprising:
• a sheet stacking device configured to receive sheets sequentially delivered thereto;
• a jogging device configured to jog the sheets received within said sheet stacking device;
• a stapler configured to staple a sheet stack jogged in said sheet stacking device;
• a guide shaft supporting said stapler such that said stapler is movable along said guide shaft in a direction perpendicular to a direction of sheet conveyance and angularly pivots about a single axis, said single axis being an axis of said guide shaft;
• and
• a moving device configured to move said stapler along said guide shaft in the direction perpendicular to the direction of sheet conveyance, said moving device includes a cam configured to controllably regulate movement of said stapler, said cam being fixedly mounted on a body of said sheet finisher,
• wherein said stapler angularly pivots about the axis of said guide shaft by means of said cam as said stapler moves along said guide shaft.