Sheet stacking apparatus, sheet processing apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsHideki Kushida, Daisaku Kamiya
Life of this patent
Estimating the term…
Abstract
A sheet stacking apparatus includes an intermediate process tray stacked with sheets, a trailing end lever movable upward from a pressing position in which to press the sheets on the intermediate process tray, a lever stopper regulating the upward movement of the trailing end lever, and an adjusting mechanism changing the regulating position of the trailing end lever by the lever stopper in accordance with a sheet stacking height of the sheets stacked on the intermediate process tray, wherein the adjusting mechanism keeps substantially constant a distance to the regulating position from the pressing position of the trailing end lever irrespective of the sheet stacking height of the sheets stacked on the intermediate process tray.
Claims25
A sheet stacking apparatus comprising:
- a sheet stacking portion which stacks a sheet;
- a sheet pressing member which presses the sheet on said sheet stacking portion in a pressing position and which is movable upward about an axis by abutting a sheet that is delivered onto said sheet stacking portion;
- a regulating member which regulates the upward movement of said sheet pressing member about the axis;
- and
- an adjusting mechanism which changes a regulating position where said sheet pressing member is regulated by said regulating member in accordance with a sheet stacking height of the stacked sheets and keeps substantially constant a distance to the regulating position from the pressing position of said sheet pressing member irrespective of the sheet stacking height.
A sheet processing apparatus which executes processing on a sheet, comprising:
- a sheet stacking portion which stacks the sheet;
- a sheet pressing member which presses the sheet on said sheet stacking portion in a pressing position and which is movable upward about an axis by abutting a sheet that is delivered onto said sheet stacking portion;
- a regulating member which regulates the upward movement of said sheet pressing member about the axis;
- and
- an adjusting mechanism which changes a regulating position where said sheet pressing member is regulated by said regulating member in accordance with a sheet stacking height of the stacked sheets and keeps substantially constant a distance to the regulating position from the pressing position of said sheet pressing member irrespective of the sheet stacking height.
An image forming apparatus comprising:
- an image forming portion which forms an image on a sheet;
- and
- a sheet processing apparatus which executes processing on the sheet on which the image is formed by said image forming portion,
- said sheet processing apparatus comprising:
- a sheet stacking portion which stacks the sheet;
- a binding unit which binds the stacked sheets;
- a sheet pressing member which presses the sheet on said sheet stacking portion in a pressing position and which is movable upward about an axis by abutting a sheet that is delivered onto said sheet stacking portion;
- a regulating member which regulates the upward movement of said sheet pressing member about the axis;
- and
- an adjusting mechanism which changes a regulating position where said sheet pressing member is regulated by said regulating member in accordance with a sheet stacking height of the stacked sheets and keeps substantially constant a distance to the regulating position from the pressing position of said sheet pressing member irrespective of the sheet stacking height.
An image forming apparatus comprising:
- an image forming portion which forms an image on a sheet;
- a sheet stacking portion which stacks the sheet bearing the image formed by said image forming portion;
- a sheet pressing member which presses the sheet on said sheet stacking portion in a pressing position and which is movable upward about an axis by abutting a sheet that is delivered onto said sheet stacking portion;
- a regulating member which regulates the upward movement of said sheet pressing member about the axis;
- and
- an adjusting mechanism which changes a regulating position where said sheet pressing member is regulated by said regulating member in accordance with a sheet stacking height of the stacked sheets and keeps substantially constant a distance to the regulating position from the pressing position of said sheet pressing member irrespective of the sheet stacking height.
A sheet stacking apparatus comprising:
- a sheet stacking portion which stacks conveyed sheets;
- a sheet pressing member which is movable upward about an axis by abutting the conveyed sheet and which presses the sheets on said sheet stacking portion in a pressing position;
- and
- an adjusting mechanism which changes an upper limit position where the upward movement of said sheet pressing member about the axis is regulated,
- wherein a conveying path space for the conveyed sheet is provided in a gap between the pressing position and the upper limit position, and
- wherein the adjusting mechanism changes the upper limit position so as to prevent the conveying path space from narrowing by an increase of the sheet stacking height of the stacked sheets.
Dependencies are inferred from the claim text.