Sheet Bonding Control for Thickness-Induced Jam Prevention
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Solution Overview
Problem
Existing image forming systems face issues with sheet bonding due to thickness inconsistencies, leading to potential jams and processing failures, especially when using toner as an adhesive.
Innovation Solution
A sheet processing apparatus that includes a conveyance unit, bonding unit, and control unit to manage sheet thickness, aborting bonding processing if the thickness exceeds a threshold, and providing user warnings or adjustments to prevent jams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bonding processing is executed for sheets with varying thickness, then productivity is maintained, but reliability deteriorates due to jams and processing failures
Solution Approach 1:
The system performs preliminary measurement of sheet thickness before bonding processing using a thickness measurement unit. Based on the measured thickness, the control unit determines in advance whether the sheets are suitable for bonding, preventing processing failures before they occur
Solution Approach 2:
The system implements a feedback mechanism where thickness measurement results are fed back to the control unit, which then adjusts or aborts bonding processing accordingly. This closed-loop control ensures that only sheets within acceptable thickness ranges undergo bonding, maintaining reliability
2Reliability
If sheet thickness is strictly controlled within a narrow range, then reliability is improved, but ease of operation deteriorates due to limited flexibility
Solution Approach 1:
The system dynamically adjusts the thickness threshold based on actual sheet measurements and bonding conditions. Rather than using a fixed narrow threshold, the control unit can adaptively determine acceptable thickness ranges, providing flexibility while maintaining reliability
Solution Approach 2:
The system changes the thickness parameter criteria dynamically based on measured values. The control unit can modify acceptance thresholds, adjust bonding parameters, or abort processing based on real-time thickness data, allowing flexible response to varying sheet conditions
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents sheet jams and ensures reliable bonding by dynamically adjusting to sheet thickness, improving usability and processing efficiency.
Implementation Method 1
bonds together sheets on which adhesive images have been formed using an adhesive by applying heat and pressure to the sheets
Implementation Method 2
bonds together sheets on which adhesive images have been formed using an adhesive by applying heat and pressure to the sheets
Implementation Method 3
toner is used as an adhesive
Data Source
AI summary
A sheet processing apparatus includes: a conveyance unit configured to convey a sheet to a loading board; a bonding unit configured to execute bonding processing for bonding together a plurality of loaded sheets loaded on the loading board, with use of an adhesive image formed on the plurality of loaded sheets; and a control unit configured to control the bonding processing executed by the bonding unit in order to create a bundle of sheets from a designated number of sheets designated by a job, wherein the control unit is further configured not to execute the bonding processing with respect to the plurality of loaded sheets in a case where a thickness of the plurality of loaded sheets exceeds a first threshold.