Inkjet Printing on Irregular Hides with Adaptive Layout Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for decorating leather articles with inkjet technology face challenges such as labor-intensive screen printing, inferior image quality on finished leather, and alignment errors during layout application, which affect the luxury feel and efficiency of personalized leather products.
Innovation Solution
A method involving inkjet printing on irregularly shaped hides using pigmented inks, with adaptive layout adjustments to match the hide's contour, including rotation, translation, and scaling of printing elements, and application of base and protective coats to enhance image quality and scratch resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If screen printing is used to decorate leather, then decoration can be achieved, but the process becomes labor intensive and requires individual screens for each color which increases cost and time
Solution Approach 1:
The patent replaces the mechanical screen printing system with a digital inkjet printing system. Instead of using physical screens and manual printing processes, the invention uses digital files that can be directly printed onto leather surfaces, eliminating the need for screen fabrication and manual operation while maintaining decoration quality
Solution Approach 2:
The invention changes the fundamental parameters of the printing process by transitioning from subtractive screen printing to additive inkjet printing. This allows for variable data printing and personalization without requiring new screens, enabling rapid customization while maintaining production efficiency
2Ease of manufacture
If inkjet printing with heat transfer paper is used on finished leather, then printing can be performed, but the image quality is inferior with light fading and poor scratch resistance
Solution Approach 1:
The patent changes the chemical parameters of the ink system by using pigmented inks specifically formulated for leather substrates. These inks contain pigments with high light fastness and adhesion promoters that bond to the leather surface, providing superior durability against fading and scratching compared to conventional dye-based inks
Solution Approach 2:
The invention uses composite ink formulations that combine pigments, binders, and adhesion promoters specifically designed for leather surfaces. This composite material approach ensures the printed image adheres strongly to the irregular leather surface while maintaining color fastness and resistance to environmental degradation
3Productivity
If standard inkjet printing layout is applied to irregular shaped hides, then printing can proceed, but alignment errors occur between printed layout and hide contour causing waste
Solution Approach 1:
The patent implements a dynamic layout adaptation system that automatically adjusts the printing layout based on the actual contour and dimensions of each irregular hide. The system uses digital imaging to capture hide geometry and dynamically repositions, rotates, and scales design elements to fit within the hide boundaries, ensuring precise alignment without manual intervention
Solution Approach 2:
The invention incorporates a feedback mechanism where the actual hide contour is scanned and measured, then this information is fed back into the printing system to adjust the layout. This closed-loop approach ensures that each hide receives a customized layout that perfectly fits its unique shape, eliminating alignment errors and material waste
Data Source
AI summary
A method of decorating a hide comprising the following steps: selecting a digital layout (501) comprising a digital contour (110) of the hide; a first printing element (551) and a second printing element (552); applying the hide on a support (300) of an inkjet printer; adapting the digital layout (501) to match the digital contour (110) with the applied hide; decorating the applied hide by printing the adapted layout with the inkjet printer; and wherein the step of adapting comprises rotating (600) the first and second printing element (551, 552) by the same angle.