Printing Charge Elimination Control for Sheet Type Changes
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Solution Overview
Problem
Static electricity on sheets during printing processes can cause sheets to stick together, leading to poor print quality, jamming, and device damage, and existing charge elimination methods are inadequate in adjusting to varying printing environments and sheet types.
Innovation Solution
A printing system with a charge elimination unit that adjusts its settings based on detected changes in sheet type during printing, suspending the process if necessary and providing user prompts for appropriate charge elimination settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed charge elimination charge adjustment value is used, then the control operation is simple, but the charge elimination becomes inappropriate when sheet type changes
Solution Approach 1:
The patent applies dynamics by making the charge elimination charge adjustment value variable rather than fixed. The control unit dynamically changes the charge adjustment value based on detected sheet type changes during printing, allowing the system to adapt to different sheet materials while maintaining automated control operation.
Solution Approach 2:
The patent implements feedback by using a sheet type detection unit to continuously monitor the type of sheet being processed. When a sheet type change is detected, the feedback mechanism triggers the control unit to adjust the charge elimination charge adjustment value accordingly, ensuring optimal performance for each sheet type.
2Productivity
If charge elimination is performed with inappropriate charge adjustment value, then the printing process continues without interruption, but sheets may be charged oppositely and stuck together
Solution Approach 1:
The patent applies preliminary action by detecting sheet type changes before they cause problems. The sheet type detection unit identifies when a different sheet type is introduced, and the control unit adjusts the charge elimination settings in advance, preventing opposite charging and sheet sticking before they occur.
Solution Approach 2:
The system uses feedback from the sheet type detection unit to monitor and adjust charge elimination parameters in real-time. When sheet type changes are detected, the feedback mechanism ensures the charge adjustment value is updated appropriately, maintaining reliable sheet handling throughout the printing process.
3Adaptability or versatility
If the charge adjustment value is changed manually, then the charge elimination can be optimized for different sheet types, but the operation becomes complex and error-prone
Solution Approach 1:
The patent applies self-service by enabling the system to automatically detect sheet type changes and adjust charge elimination parameters without manual intervention. The sheet type detection unit and control unit work together to self-regulate the charge elimination process, optimizing performance for different sheet types while keeping the operation simple and error-free.
Solution Approach 2:
The system implements automated feedback control where the sheet type detection unit continuously monitors the printing process and provides feedback to the control unit. This automatic feedback loop adjusts the charge elimination charge adjustment value based on detected sheet types, eliminating the need for manual adjustment and reducing operational complexity.
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
Reduces the risk of inappropriate charge elimination by ensuring the process matches the current sheet type, preventing sheet sticking and improving print quality and device reliability.
Implementation Method 1
the static electricity on a sheet is dissipated by application of electric charges opposite to the electric charges on the sheet to the sheet via the charge elimination rollers
Data Source
AI summary
If a sheet type has been changed without changing the charge-elimination charge adjustment value, a charge elimination control may be performed on sheets with a charge adjustment value inappropriate for the sheets, which may result in charging the sheets and lead to further sticking of the sheets. A control method for printing system, that includes a charge elimination unit that performs a charge elimination process on a sheet, includes performing a printing process, performing, in a case where a sheet type to be used for the printing process has been changed during the printing process, control to stop the printing process, and changing a setting of charge elimination that is performed by the charge elimination unit.