Temperature-Controlled Digital Printing for Engineered Wood Boards
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Solution Overview
Problem
High density fiberboard printing results are inconsistent due to temperature variations, leading to undesirable color variations and print quality issues, despite primer application and identical printer settings.
Innovation Solution
Incorporating a temperature measurement device to monitor and control the entering temperature of the wood material board workpiece during printing, ensuring it remains within a target interval, and using a control unit to generate warnings or interrupt printing if temperatures are outside this range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the wood material board workpiece is primed with white pigmented synthetic resins and dried, then the coloring should be even from board to board and charge to charge, but different printing results are still achieved over time due to temperature variations
Solution Approach 1:
A temperature measurement device measures the actual temperature of the wood material board workpiece before printing, and this measured temperature is fed back to a control unit. The control unit then adjusts printer settings (such as ink quantity, drying time, or heating power) based on the feedback to compensate for temperature variations, ensuring consistent printing results despite changes in board temperature
Solution Approach 2:
The invention dynamically changes printing parameters based on the measured temperature of the wood material board workpiece. When the board temperature varies, the system adjusts parameters such as ink viscosity, drying temperature, or printing speed to maintain optimal printing conditions, thereby resolving the contradiction between manufacturing precision and reliability
2Temperature
If the wood material board workpiece enters the printing device at higher temperature, then the ink loses water more rapidly and viscosity increases, but the printed image becomes saturated and less detailed
Solution Approach 1:
The system dynamically adjusts printing parameters based on the real-time temperature of the wood material board workpiece. When the board enters at higher temperature, the system automatically modifies ink flow rate, drying conditions, or heating parameters to compensate for the accelerated water loss and viscosity increase, maintaining consistent image quality across varying temperature conditions
3Temperature
If the wood material board workpiece enters the printing device at lower temperature, then the ink viscosity decreases and droplets run more, but the printed image becomes blurry with lower coverage
Solution Approach 1:
The system dynamically adjusts printing parameters based on the real-time temperature of the wood material board workpiece. When the board enters at lower temperature, the system automatically modifies ink flow rate, drying conditions, or heating parameters to compensate for the decreased viscosity and excessive ink spreading, maintaining sharp image edges and proper coverage across varying temperature 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
This approach reduces color variation and improves print quality by maintaining consistent ink behavior, allowing for more detailed and saturated decorations, and minimizing waste by ensuring optimal printing conditions.
Implementation Method 1
a temperature measurement device which is disposed in order to determine an entering temperature of the wood material board workpiece during printing
Implementation Method 2
At a higher temperature, the ink that is sprayed on during printing does not flow as far, as it loses water more rapidly due to the higher temperature
Data Source
AI summary
The disclosure relates to a wood material board production installation for producing a wood material board, in particular a high density fiberboard, the installation having a wood material board workpiece production device for producing a wood material board workpiece and a digital printing device for printing the wood material board workpiece. A temperature measurement device is provided which is disposed to determine an entering temperature of the wood material board workpiece during printing.