Thermal Binding Pressure Release for Faster Paper Jam Clearance
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Solution Overview
Problem
Existing sheet processing apparatuses face difficulties in safely and efficiently removing a paper jam without causing wrinkles or tears when sheets are sandwiched between pressurizing and reception members during thermal pressure bonding.
Innovation Solution
A sheet processing system with a conveyance unit, detection unit, and control unit that detects a jam and releases the pressurized state immediately, allowing for safe removal of jammed sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressurizing unit maintains pressurization for a predetermined time to ensure bonding, then bonding reliability is improved, but user safety and ease of operation deteriorate when paper jam occurs
Solution Approach 1:
The control unit immediately releases pressurization upon detecting a paper jam, before the predetermined bonding time elapses. This preliminary action prevents the sheets from being damaged during removal while still allowing normal bonding operations to proceed after jam clearance.
Solution Approach 2:
The detection unit continuously monitors the sheet conveyance path for paper jams and provides real-time feedback to the control unit. When a jam is detected, the control unit receives feedback and immediately adjusts the pressurization timing, creating a closed-loop control system that balances bonding reliability with operational safety.
2Strength
If the pressurizing unit design allows strong pressurization for bonding, then bonding strength is improved, but sheet damage during manual removal worsens
Solution Approach 1:
The pressurization timing is made dynamic rather than fixed. The control unit adjusts the pressurization duration based on real-time jam detection, immediately releasing pressure when a jam occurs. This dynamic control allows strong pressurization during normal bonding while preventing damage during jam clearance operations.
Solution Approach 2:
The system provides beforehand cushioning by immediately releasing pressurization when a paper jam is detected, preventing the harmful effect of strong pressurization from causing sheet damage during manual removal operations.
3Manufacturing precision
If the system maintains pressurization until predetermined time to complete bonding cycle, then bonding quality is improved, but time required for jam clearance increases
Solution Approach 1:
The control unit takes preliminary action by immediately releasing pressurization upon jam detection, before the predetermined bonding time completes. This reduces the time users must wait for jam clearance while maintaining bonding quality through controlled pressurization during normal operations.
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
Enables safe and efficient paper jam clearance without damaging the sheets, enhancing user convenience and apparatus reliability.
Implementation Method 1
an apparatus that performs thermal pressure bonding of sheets with toner applied thereon as an adhesive material by heating and pressurizing the sheets
Implementation Method 2
thermal pressure bonding of sheets with toner applied thereon as an adhesive material by heating and pressurizing the sheets
Data Source
AI summary
The present disclosure relates to a sheet processing system allowing a user to easily remove a sheet from a sheet pressure bonding unit when a jam occurs. A control method for the sheet processing system includes conveying a sheet, pressurizing, for a predetermined time, a plurality of conveyed sheets by a pressurizing unit, detecting an occurrence of a jam of the conveyed sheet or sheets, and controlling the pressurizing unit to release a pressurized state by the pressurizing unit even if the predetermined time has not elapsed in a case where the occurrence of the jam is detected while the plurality of sheets is being pressurized.