US 8,511,665 B2 · Sheet processing apparatus and image forming apparatus

Abstract

A sheet processing apparatus includes a processing tray configured to stack a sheet to be processed, a sheet overlap unit configured to allow a sheet fed while the sheet to be processed is stacked on the processing tray, to be overlaid and made to wait, first and second bundle conveyance rollers configured to convey the sheet to the processing tray from the sheet overlap unit, and a sheet processing apparatus control unit configured to control an overlap operation in the sheet overlap unit, wherein the sheet processing apparatus control unit determines, based on sheet information relating to the sheet fed to the sheet overlap unit, whether a sheet to be then fed is overlaid on the sheet fed to the sheet overlap unit.

Claims9

Dependent claims

A sheet processing apparatus comprising:

a sheet stacking unit configured to stack sheets to be processed;
a sheet overlap unit configured to allow a predetermined number N of successively fed sheets to be overlapped and made to wait, while a preceding sheet bundle to be processed is being stacked on the sheet stacking unit;
a conveyance unit configured to convey overlapped sheets from the sheet overlap unit to the sheet stacking unit;
and
a control unit configured to control the overlapping of sheets in the sheet overlap unit,
wherein the control unit is arranged to determine, based on sheet information relating to an Mth sheet fed to the sheet overlap unit, before the number of fed sheets reaches the predetermined number N, whether an M+1th sheet is overlapped on the Mth sheet in the sheet overlap unit.

3 more elements

An image forming apparatus comprising:

a feeding unit configured to feed a sheet on which an image is to be formed;
and
a sheet stacking unit configured to stack sheets to be processed;
a sheet overlap unit configured to allow a predetermined number N of successively fed sheets to be overlapped and made to wait, while a preceding sheet bundle to be processed is being stacked on the sheet stacking unit;
a conveyance unit configured to convey overlapped sheets from the sheet overlap unit to the sheet stacking unit;
and
a control unit configured to control the overlapping of sheets in the sheet overlap unit,
wherein the control unit is arranged to determine, based on sheet information relating to an Mth sheet fed to the sheet overlap unit, before the number of fed sheets reaches the predetermined number N, whether an M+1th sheet is overlapped on the Mth sheet in the sheet overlap unit.

5 more elements

Dependencies are inferred from the claim text.

Sheet processing apparatus and image forming apparatus

Life of this patent

Sheet processing apparatus and image forming apparatus

Life of this patent

Abstract

Claims9