3D Light-Transmitting Printed Surface With Pad-Printed Shading

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Solution Overview

Problem

Existing decorative and display products require multiple molding and printing steps to achieve a three-dimensional surface structure with light transmission, increasing the number of manufacturing processes.

Innovation Solution

A printed matter is formed by transferring ink onto a base body with a three-dimensional surface structure using a printing pad, creating a print image region with varying ink densities to control light transmission, and forming lighting equipment with an illumination cover using this printed matter.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If molding is performed multiple times to cover effect pigment with transparent resin, then the decorative formed product achieves light transmission and depth effect, but the number of manufacturing steps increases

Engineering Contradiction:
Improvelight transmission qualityVSAvoidnumber of manufacturing steps
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple manufacturing operations into a single injection molding process. The base body, effect pigment layer, and transparent resin cover are formed in one step, eliminating separate coating and curing steps while maintaining light transmission quality and depth effect

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The injection molding process is designed to perform multiple functions simultaneously: forming the base body structure, applying the effect pigment layer, and creating the transparent resin cover. This multi-functional approach reduces the overall number of manufacturing steps while achieving the desired optical effects

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Manufacturing precision

If printing is performed on sheet-like base to control light transmission, then the display device achieves desired light blocking regions, but the sheet-like base must be deformed to conform to three-dimensional structure

Engineering Contradiction:
Improvelight transmission controlVSAvoidmanufacturing process complexity
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The printing pattern is pre-formed on the base body during the injection molding process before the base body is installed in the display device. This preliminary action eliminates the need for subsequent deformation steps and simplifies the overall manufacturing process while maintaining precise light transmission control

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent changes the state of the base body from a deformable sheet-like structure to a rigid three-dimensional molded structure with integrated printing. This parameter change eliminates the need for deformation while maintaining the ability to control light transmission through the printed regions

Inventive Principle:
Principle #35Parameter changes

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 method reduces the number of manufacturing steps and allows for a decorative or display component with a three-dimensional surface structure that can transmit light, suitable for use in lighting equipment.

Implementation Method 1

a printed matter formed by pushing a printing surface of a printing pad to transfer ink placed on the printing surface

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 2

a base body made of a material that allows transmission of light

Methodology Applied
Scientific EffectLight transmission: Light

Data Source

PatentEP4663422A1Printed material, printed material manufacturing method, and illuminating device
Publication Date: 2025.12.17 SHUHO KK
  • EP4663422A1 patent drawingFigure 1~2
  • EP4663422A1 patent drawingFigure 3
  • EP4663422A1 patent drawingFigure 4

AI summary

To obtain a printed matter that can reduce the number of steps, that can be used as a decorative component, a display device, or lighting equipment, that is made of a material allowing transmission of light, and that has a three-dimensional surface structure having a depth on a visible surface, and to obtain a printed matter manufacturing method, and to obtain lighting equipment. A printed matter of the present disclosure is a printed matter formed by pushing a printing surface of a printing pad to transfer ink placed on the printing surface, the printed matter including: a base body made of a material that allows transmission of light, a visible surface of the base body having a three-dimensional surface structure having a depth; a print image region provided on at least one surface of the base body, the print image region being a region in which ink is placed; and a non-printing region provided on the one surface, the non-printing region being a region in which no ink is placed, wherein the print image region is provided in an area including the three-dimensional surface structure formed on the one surface, and the print image region has a smaller amount of light transmitted than the non-printing region.