Watch Dial Decoration via Metal Nanoparticle Ink-Jet Printing
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Solution Overview
Problem
Existing watch component decoration methods, such as those disclosed in JP-A-2000-111660, struggle to express innovative designs due to limitations in forming complex patterns on metal plates without requiring manufacturing of films or printing plates, resulting in a lack of visual complexity and luxury in watch designs.
Innovation Solution
A watch component featuring a base material with a first pattern formed through recessed portions and a second pattern created by dot-forming with ink composed of metal nanoparticles, using ink-jet printing to display a binarized pattern that enhances the design with visual recognition and luxury aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a transparent ink reception layer is formed on a metal plate with plating to enable ink-jet printing, then manufacturing of films or printing plates is not required and a variety of dials can be produced in small quantities in a short time at a low cost, but it is difficult to express an innovative design
Solution Approach 1:
The dial surface is divided into two distinct pattern layers: a first pattern formed by recessed portions in the metal plate, and a second pattern formed by ink-jet printing with metal nanoparticle ink. This segmentation allows each pattern to contribute differently to the overall design, enabling both ease of manufacture and innovative design expression.
Solution Approach 2:
The invention uses a composite structure combining metal plate with recessed portions and metal nanoparticle ink deposition. The combination of the metallic base material with the nanoparticle ink creates a composite decorative surface that achieves both manufacturing efficiency and design sophistication.
2Device complexity
If a character or image is simply formed through ink-jet on the surface of the metal plate with plating, then the manufacturing process is simple, but it is difficult to express an innovative design
Solution Approach 1:
The decorative pattern is segmented into two components: the first pattern created by physical recessed portions in the metal plate, and the second pattern created by ink-jet deposition of metal nanoparticles. This segmentation transforms a simple ink-jet process into a sophisticated two-stage decorative method.
Solution Approach 2:
Different regions of the dial surface are given different properties: areas with recessed portions provide one type of visual texture, while areas with metal nanoparticle ink deposition provide another type of visual texture. This local differentiation enables rich design expression while maintaining process simplicity.
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 method allows for the creation of visually complex and luxurious watch designs by combining the base material's texture with the metal nanoparticle patterns, enabling easy variation of the second pattern to provide distinct impressions while emphasizing the first pattern, thereby improving design aesthetics and luxury appeal.
Implementation Method 1
a second pattern is displayed by dot-forming a binarized pattern with ink composed of metal nanoparticles on a front surface of the base material
Data Source
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AI summary
A watch component includes a base material having a first pattern, wherein a second pattern is displayed by dot-forming a binarized pattern with ink composed of metal nanoparticles on a front surface of the base material, and a desired design is expressed with the first pattern and the second pattern.