Printed Surface Preheating and Pressurizing for Coating Adhesion
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Solution Overview
Problem
Coating technologies have not addressed the issue of coating layer peeling off in some printers, leading to the issue of the coated layer easily peeling off in some printers.
Innovation Solution
A coating apparatus and a coating system that includes a coating processing section, a pressurizing roller pair, and a heating section to heat and pressurize the printed surface of a workpiece, using materials with low friction coefficients to prevent peeling of the coating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coating processing is performed on a printed surface without additional heating and pressurization, then the coating process is simple, but the coated layer peels off easily
Solution Approach 1:
The patent combines the heating section and pressurizing roller pair into an integrated treatment unit that processes the printed surface before coating. This merging of functions allows simultaneous thermal and mechanical treatment to improve toner aggregation and adhesion, resolving the contradiction between reliability and device complexity by creating a unified preprocessing system rather than separate independent components.
Solution Approach 2:
The heating section and pressurizing roller pair perform preliminary treatment on the printed surface before the coating process. By pre-heating and pre-pressurizing the toner layer, the system prepares the surface to receive the coating agent more effectively, ensuring better adhesion before the actual coating occurs. This preliminary action prevents peeling issues that would otherwise require complex post-coating treatments.
2Manufacturing precision
If the printed surface is heated and pressurized before coating, then the toner is properly aggregated and fixed, but the processing time and energy consumption increase
Solution Approach 1:
The heating section and pressurizing roller pair operate continuously as the workpiece passes through the coating apparatus. The heating and pressurization processes occur in-line during normal production flow, eliminating the need for separate batch processing steps. This continuous action maintains manufacturing precision while minimizing interruptions to the production cycle, thereby reducing overall processing time.
3Reliability
If a pressurizing roller pair is added to the coating apparatus, then the workpiece is properly pressurized for better coating adhesion, but the device complexity and manufacturing cost increase
Solution Approach 1:
The pressurizing roller pair allows precise control of pressure parameters applied to the workpiece during the coating process. By adjusting the pressure magnitude and distribution, the system optimizes toner aggregation and coating adhesion without requiring complex mechanical structures. This parameter-based control achieves reliable adhesion while maintaining ease of manufacture through simple adjustable mechanisms rather than complex fixed structures.
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 coating apparatus effectively aggregates and fixes the toner on the printing surface, suppressing the separation of the coated layer and preventing peeling.
Implementation Method 1
a heating section disposed at the same position as or on an upstream side of the pressurizing roller pair with respect to a conveyance direction of the workpiece and configured to heat the printed surface of the workpiece
Implementation Method 2
a pressurizing roller pair disposed on an upstream side or a downstream side of the coating processing section and configured to sandwich, pressurize and convey the workpiece
Data Source
Figure 1
Figure 2~4
Figure 5
AI summary
A coating apparatus 1 including: a coating processing section 30 configured to perform predetermined coating processing on a printed surface of a workpiece 2 which is a sheet or a plate having a surface subjected to electronic printing processing; a pressurizing roller pair 21, 22 disposed on an upstream side or a downstream side of the coating processing section 30 and configured to sandwich, pressurize and convey the workpiece 2; and a heating section 23, 57 disposed at the same position as or on an upstream side of the pressurizing roller pair 21, 22 with respect to a conveyance direction of the workpiece 2 and configured to heat the printed surface of the workpiece 2.