Movable Processing Portion for Sheet Conveyance Interference
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Solution Overview
Problem
In image forming systems, the processing of sheet bundles is hindered when the conveyance of succeeding sheets is interrupted by the processing portion, which is engaged with a preceding sheet, leading to inefficiencies and productivity losses.
Innovation Solution
A sheet processing apparatus with a movable processing portion and control system that positions the processing portion to prevent interference with succeeding sheets, allowing for uninterrupted conveyance by timing the movement to align with the passage of sheets and ensuring sufficient processing time for preceding sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the processing portion processes a preceding sheet at the sheet placement portion, then the predetermined processing is performed on the sheet, but the conveyance of succeeding sheets is hindered by the processing portion
Solution Approach 1:
The processing portion is made movable between a first position (where it performs processing on sheets) and a second position (where it does not interfere with sheet conveyance). The control portion dynamically positions the processing portion based on whether a sheet is present at the placement portion, allowing the system to switch between processing mode and conveyance mode to prevent hindrance to succeeding sheets
2Manufacturing precision
If the processing portion is positioned to process preceding sheets, then processing is performed, but time for conveying succeeding sheets is reduced
Solution Approach 1:
The control portion determines in advance whether a sheet is present at the placement portion before the processing portion arrives. If no sheet is present, the control portion positions the processing portion to the second position (non-interference position) in advance, allowing succeeding sheets to pass through without hindrance. This preliminary positioning action prevents time loss during conveyance
Data Source
AI summary
Provided is a sheet processing apparatus, including: a placement portion to which a sheet conveyed by a conveyance portion in a conveyance direction is placed; a processing portion configured to perform predetermined processing on a sheet placed on the placement portion, and to be movable in a predetermined moving range; and a control portion configured to control the processing portion to position, at a timing at which a sheet conveyed by the conveyance portion passes through the moving range, from a first position of preventing from interfering with the sheet to a second position of performing the predetermined processing on a preceding sheet having been conveyed by the conveyance portion and placed on the placement portion before the sheet.