Printing Static Elimination Control for Humidity-Driven Sheet Sticking
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Solution Overview
Problem
Static electricity on sheets during printing causes sheets to stick together, leading to quality issues and potential device damage, and existing static electricity elimination methods are inadequate due to variations in print environment and sheet type, requiring optimal charge adjustment values that are not effectively controlled.
Innovation Solution
A printing system with a static electricity elimination device and sensors to detect humidity and sheet conveyance path changes, adjusting the static electricity elimination settings based on detected changes to prevent inappropriate charge adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed charge adjustment value is used for static electricity elimination, then the device complexity is reduced, but the adaptability to different print environments and sheet types deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of the charge adjustment value based on detected print environment conditions. The control unit modifies the charge adjustment value in response to changes in humidity, temperature, or sheet type, transforming the system from static to adaptive, thereby resolving the contradiction between simplicity and adaptability
Solution Approach 2:
The patent changes the parameter of charge adjustment value dynamically according to environmental conditions. By monitoring humidity, temperature, and sheet type parameters, the system adjusts the charge adjustment value accordingly, enabling effective static electricity elimination across different print environments without requiring complex manual intervention
2Reliability
If the charge adjustment value is increased to eliminate static electricity more effectively, then the static electricity elimination performance is improved, but the risk of inducing static electricity and causing sheet sticking increases
Solution Approach 1:
The patent employs feedback control by detecting the actual charge state of the sheet and adjusting the charge adjustment value accordingly. The control unit monitors conditions such as humidity and sheet type, and modifies the charge adjustment value in real-time to maintain optimal static electricity elimination while avoiding excessive charge that could cause sheet sticking
Solution Approach 2:
The system dynamically adjusts the charge adjustment value based on real-time detection of print environment conditions. By making the charge adjustment value variable rather than fixed, the system can optimize static electricity elimination effectiveness while preventing the induction of harmful static charges that would cause sheet sticking
3Adaptability or versatility
If manual adjustment of charge adjustment value is required for different environments, then the adaptability is improved, but the ease of operation deteriorates
Solution Approach 1:
The patent implements self-service functionality where the control unit automatically detects print environment conditions and adjusts the charge adjustment value without user intervention. The system monitors humidity, temperature, and sheet type, and autonomously optimizes static electricity elimination settings, eliminating the need for manual adjustment while maintaining high adaptability
Solution Approach 2:
The system uses feedback from environmental sensors to automatically adjust the charge adjustment value. By continuously monitoring print conditions and adapting the charge adjustment value accordingly, the system achieves both high adaptability to different sheet types and ease of operation, as no manual intervention is required
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 sticking and reduces waste by dynamically adjusting static electricity elimination settings in response to environmental and configuration changes, ensuring effective static electricity management.
Implementation Method 1
A component (hereinafter, referred to as 'static electricity elimination roller') that applies the voltage to the conveyance rollers cancels static electricity by applying a charge opposite to a charge on a sheet to the sheet via the static electricity elimination roller
Implementation Method 2
a sensor configured to detect humidity
Data Source
AI summary
There is provided a system for performing static electricity elimination properly in a case where there is a change in humidity. A method for controlling a printing system includes printing an image on a sheet, performing static electricity elimination on the sheet with the image printed on the sheet, detecting humidity, and notifying a user to change a setting value of the static electricity elimination in a case where the detected humidity has changed.