Image Forming Method Using Rough Recording Medium
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Solution Overview
Problem
Existing image forming methods require heating the resin layer to a high temperature or adding a large amount of softener to achieve a glittering effect, which can damage the recording medium.
Innovation Solution
An image forming method that involves forming a resin layer on a recording medium with a surface arithmetic mean height of 1.000 or more, allowing powder particles to be inclined without fully softening the resin layer by supplying powder onto the surface of the resin layer and aligning it to achieve a glittering effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the resin layer is heated to a high temperature or a large amount of softener is added to soften the resin layer sufficiently, then powder particles can be aligned to be inclined against the surface, achieving a glittering effect, but there may occur large damage of the recording medium
Solution Approach 1:
The invention changes the surface roughness parameter of the recording medium to achieve the desired decoration effect without altering the temperature or softener amount parameters. By selecting a recording medium with specific surface roughness (arithmetic mean height Sa of 1.000 or more), the powder particles can be aligned at an angle without requiring high temperature heating or large amounts of softener, thus avoiding damage to the recording medium while achieving the glittering effect.
2Object-affected harmful factors
If the resin layer is not sufficiently softened, then the recording medium is protected from damage, but powder particles are horizontally aligned and the decoration effect is limited
Solution Approach 1:
The invention changes the surface roughness parameter of the recording medium to achieve inclined powder alignment without requiring the resin layer to be sufficiently softened. By using a recording medium with arithmetic mean height Sa of 1.000 or more, the powder particles can be aligned at an angle even when the resin layer is not fully softened, thus maintaining protection of the recording medium while achieving a glittering decoration effect.
Solution Approach 2:
The surface roughness of the recording medium acts as an intermediary factor that enables powder particle alignment without requiring the resin layer to be sufficiently softened. The rough surface provides the necessary mechanical interaction to orient powder particles at an angle, serving as a mediator between the powder supply and the resin layer softening process.
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 enables the formation of a decorated image with a glittering effect without damaging the recording medium, as the powder particles can be inclined without fully softening the resin layer, thus reducing the need for high temperatures or excessive softeners.
Implementation Method 1
it is necessary to heat the resin layer to a high temperature, or add a large amount of a softener to the resin layer
Implementation Method 2
causing a decoration to adhere to the image by utilizing an adhesive force imparted to the image
Data Source
AI summary
The present invention provides an image forming method for forming a decorated image having a resin layer and a powder contacted with each other, the method including: forming a resin layer on a recording medium; and supplying a powder onto the recording medium, in which the recording medium has a surface with an arithmetic mean height Sa of 1.000 or more.