Dynamic Static Elimination Voltage Control for Printing Systems
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Solution Overview
Problem
Existing printing systems struggle to effectively adjust static elimination voltage values based on varying print environments and sheet types, leading to potential sheet adhesion and print quality issues during post-processing.
Innovation Solution
A printing system with a static elimination apparatus that includes a storage device to store sheet information, allowing for dynamic adjustment of print control values and static elimination applied voltage values based on changes in print control parameters, such as grammage and surface properties, to optimize static elimination processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed static elimination voltage value is used for all sheet types, then the device complexity is reduced, but the static elimination effectiveness deteriorates when sheet types change
Solution Approach 1:
The patent implements dynamic adjustment of static elimination voltage values based on detected sheet types. The control unit automatically changes the voltage parameter according to the sheet type detected by the detection unit, transitioning from a static fixed value to a dynamic adaptive value, thereby resolving the contradiction between simplicity and effectiveness
Solution Approach 2:
The patent changes the voltage parameter dynamically according to sheet type characteristics. Different voltage values are applied for different sheet types (e.g., ordinary paper vs. coated paper) to optimize static elimination effectiveness for each material type, resolving the contradiction through parameter adaptation
2Reliability
If static elimination control is adjusted for each sheet type, then the static elimination effectiveness is improved, but the device complexity increases
Solution Approach 1:
The detection unit automatically detects sheet types and the control unit automatically selects appropriate voltage values without manual intervention. The system serves itself by autonomously adapting to different sheet types, reducing the operational complexity while maintaining high effectiveness
Solution Approach 2:
The detection unit provides feedback about the sheet type to the control unit, which then adjusts the voltage parameter accordingly. This closed-loop feedback mechanism enables automatic adaptation to different sheet types, improving effectiveness while managing complexity through automated control
3Reliability
If manual adjustment of voltage values is required for each sheet type, then the static elimination effectiveness can be optimized, but the ease of operation deteriorates
Solution Approach 1:
The system performs automatic sheet type detection and voltage value selection without requiring user intervention. The detection unit and control unit work together to autonomously optimize static elimination for each sheet type, maintaining effectiveness while greatly simplifying operation
Solution Approach 2:
The system pre-configures voltage values for different sheet types in advance. When a sheet is detected, the appropriate voltage value is already prepared and can be applied immediately, eliminating the need for manual adjustment while ensuring optimized performance
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
The system ensures effective static elimination control, reducing sheet adhesion and improving print quality by dynamically adjusting voltage settings based on sheet characteristics, thereby enhancing post-processing efficiency.
Implementation Method 1
The static elimination implemented by a configuration in which a voltage is applied to the conveyance roller (hereinafter referred to as a 'static elimination roller') cancels out charged static electricity by applying opposite charges of static charges on the sheet to the sheet via the static elimination roller.
Data Source
AI summary
To change a print control value included in sheet information, it has been difficult to appropriately change a static elimination applied voltage value included in the sheet information if the print control value that influences an amount of charge on a sheet is changed. A control method of a printing system including a static elimination apparatus includes storing sheet information including a print control value and a static elimination applied voltage value in a storage device, changing the print control value included in the sheet information stored in the storage device, and changing the static elimination applied voltage value included in the sheet information stored in the storage device based on a changed print control value in a case where the print control value that influences an amount of charge on a sheet is changed.