Sheet processing apparatus and image forming system

A sheet processing apparatus comprising:

• a punch portion which punches a hole at an end part of a sheet;
• a sheet conveying portion which conveys the sheet, on which a punch process is performed by the punch portion, by pushing the end part of the sheet where the punch process is performed by the punch portion;
• and
• a controller which controls the sheet conveying portion so that the sheet conveying portion conveys a sheet at a sheet conveying speed lower than a predetermined speed in accordance with at least one of a size and a type of the sheet on which the punch process is performed.

An image forming system comprising:

• an image forming portion which forms an image on a sheet;
• a sheet processing portion which selectively performs a process on the image-formed sheet and stacks the sheet;
• and
• a controller which controls the sheet processing portion,
• wherein the sheet processing portion includes:
• a punch portion which punches a hole at an end part of a sheet;
• and
• a sheet conveying portion which conveys the sheet, on which a punch process is performed by the punch portion, by pushing the end part of the sheet where the punch process is performed by the punch portion, and
• wherein the controller controls the sheet conveying portion so that the sheet conveying portion conveys a sheet at a sheet conveying speed lower than a predetermined speed in accordance with at least one of a size and a type of the sheet on which the punch process is performed.

A sheet processing apparatus comprising:

• a punch portion which punches a hole at an end part of a sheet;
• a sheet conveying portion which conveys the sheet, on which a punch process is performed by the punch portion, by pushing the end part of the sheet where the punch process is performed by the punch portion;
• and
• a controller which controls the sheet conveying portion so that the sheet conveying portion conveys a sheet at a sheet conveying speed lower than a predetermined speed in accordance with at least one of a number, a shape and a size of holes to be punched at the sheet end part.

An image forming system comprising:

• an image forming portion which forms an image on a sheet;
• a sheet processing portion which selectively performs a process on the image-formed sheet and stacks the sheet;
• and
• a controller which controls the sheet processing portion,
• wherein the sheet processing portion includes:
• a punch portion which punches a hole at an end part of a sheet;
• and
• a sheet conveying portion which conveys the sheet, on which a punch process is performed by the punch portion, by pushing the end part of the sheet where the punch process is performed by the punch portion, and
• wherein the controller controls the sheet conveying portion so that the sheet conveying portion conveys a sheet at a sheet conveying speed lower than a predetermined speed in accordance with at least one of a number, a shape and a size of holes to be punched at the sheet end part.

A sheet processing apparatus comprising:

• a punch portion which punches a hole at an end part of a sheet;
• a first stack portion which is capable of stacking the sheet on which a punch process is performed by the punch portion;
• a first sheet discharge portion which discharges the sheet stacked on the first stack portion toward a second stack portion by pushing the end part of the sheet where the punch process is performed by the punch portion;
• a second sheet discharge portion which discharges a sheet on which the punch process is performed by the punch portion to the second stack portion not by pushing the end part of the sheet and not by way of the first stack portion;
• and
• a controller which controls the first and second sheet discharge portions,
• wherein the controller determines, in accordance with at least one of a size and a type of the sheet on which the punch process is performed, and a number, a shape, and a size of holes to be punched at the sheet end part, whether a sheet having holes punched at the end part thereof is conveyed to the second stack portion by the first sheet discharge portion or the second sheet discharge portion.

An image forming system comprising:

• an image forming portion which forms an image on a sheet;
• a sheet processing portion which selectively performs a process on the image-formed sheet and stacks the sheet;
• and
• a controller which controls the sheet processing portion,
• wherein the sheet processing portion includes:
• a punch portion which punches a hole at an end part of a sheet;
• a first stack portion which is capable of stacking the sheet on which a punch process is performed by the punch portion;
• a first sheet discharge portion which discharges the sheet stacked on the first stack portion toward a second stack portion by pushing the end part of the sheet where the punch process is performed by the punch portion;
• and
• a second sheet discharge portion which discharges a sheet on which the punch process is performed by the punch portion to the second stack portion not by pushing the end part of the sheet, and
• wherein the controller determines, in accordance with at least one of a size and a type of the sheet on which the punch process is performed, and a number, a shape and, a size of holes to be punched at the sheet end part, whether a sheet having holes punched at the end part thereof is conveyed to the second stack portion by the first sheet discharge portion or the second sheet discharge portion.