Dual-Mode Printing Drying System for Shape Stability
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Solution Overview
Problem
Existing printing apparatuses face challenges in drying ink on printing media with changeable shapes, such as label sheets with film and paper surfaces, as excessive heating can cause the image formation surface to separate from the opposite surface, leading to shape changes and printing errors.
Innovation Solution
A printing apparatus with a dual-mode drying system, featuring a blower heating unit and a contact heating unit, where the second mode uses lower gas temperatures and higher wind velocities to prevent excessive heating, ensuring the printing medium is heated with a strong wind velocity while maintaining controlled temperatures, thereby suppressing shape changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the heating temperature of the printing medium is excessively high, then the drying efficiency of the ink is improved, but the image formation surface separates from the opposite surface causing shape changes
Solution Approach 1:
The patent implements a dual-mode heating system where the heating conditions are dynamically adjusted based on the printing medium type. The control unit switches between first heating conditions (higher temperature, lower wind velocity) and second heating conditions (lower temperature, higher wind velocity) to optimize both drying efficiency and shape stability for different medium characteristics.
Solution Approach 2:
The patent changes the physical parameters of the heating process by adjusting temperature and wind velocity in two distinct modes. The first mode uses higher temperature with lower wind velocity, while the second mode uses lower temperature with higher wind velocity, allowing optimization of the drying process based on the specific printing medium being used.
2Adaptability or versatility
If a single heating mode is used, then the device complexity is reduced, but the adaptability to different printing medium types is limited
Solution Approach 1:
The patent creates a universal heating system that can handle multiple printing medium types (film-paper combinations, flexible materials, heat-sensitive materials) using a single dual-mode heating apparatus. The control unit automatically selects appropriate heating conditions based on the medium type, making the system adaptable to various materials without requiring separate heating systems for each medium type.
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 dual-mode system effectively prevents shape changes in printing media with changeable shapes by controlling heating temperatures and wind velocities, reducing the risk of printing errors and ensuring consistent image formation.
Implementation Method 1
a blower heating unit configured to blow a gas being a heated gas to the image formation surface
Implementation Method 2
a blower heating unit configured to blow a gas being a heated gas to the image formation surface
Implementation Method 3
a contact heating unit configured to heat the printing medium by coming into contact with a surface on a side opposite to the image formation surface
Data Source
AI summary
A printing apparatus includes a setting unit, a winding unit, a printing head and a drying oven, and the drying oven includes a blower heating unit and a contact heating unit. The printing apparatus includes a first mode and a second mode as printing modes. Either a temperature of the gas blown by the blower heating unit in the second mode is lower than a temperature of the gas blown by the blower heating unit in the first mode or a heating temperature of the contact heating unit in the second mode is lower than a heating temperature of the contact heating unit in the first mode or both. A wind velocity of the gas blown by the blower heating unit in the second mode is higher than a wind velocity of the gas blown by the blower heating unit in the first mode.