Stamp Face Forming Apparatus Heat Distribution Control

Solution Overview

Problem

Existing stamp face forming technologies face challenges in preventing dot collapse during the printing process, particularly when a dot to be heated is adjacent to a dot that is not heated, due to thermal plasticization and ink permeation issues in porous thermoplastic materials like EVA.

Innovation Solution

A stamp face forming apparatus and method that control the amount of heat applied to heating elements, adjusting the signal to the drive circuit such that the heat per dot adjacent to a non-heated dot is less than that of a dot not adjacent to a non-heated dot, using a plurality of heating elements arranged along the surface of the stamp face material, and a controller to manage this heat distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If uniform heat is applied to all dots in the stamp face material, then the stamp face can be formed efficiently, but dots adjacent to non-heated dots collapse due to thermal plasticization

Engineering Contradiction:

Improvestamp face formation efficiencyVSAvoiddot shape accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent applies different heat amounts to different dots based on their position relative to non-heated dots. Specifically, dots adjacent to non-heated dots receive less heat than dots not adjacent to non-heated dots. This local differentiation prevents thermal plasticization at critical locations while maintaining overall production efficiency.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes the heat parameter (amount of heat applied) based on the spatial relationship between dots. By adjusting the heat amount according to whether a dot is adjacent to a non-heated dot, the system prevents dot collapse while maintaining efficient stamp face formation.

Inventive Principle:

Principle #35Parameter changes

2Quantity of substance

If the stamp face material is porous to allow ink permeation, then ink can be absorbed effectively, but thermal plasticization causes dot collapse during heating

Engineering Contradiction:

Improveink absorption capacityVSAvoiddot shape accuracy

Core Design Contradiction:

Quantity of substanceVSManufacturing precision

Solution Approach 1:

The patent applies different heat amounts to different dots based on their position relative to non-heated dots. Specifically, dots adjacent to non-heated dots receive less heat than dots not adjacent to non-heated dots. This local differentiation prevents thermal plasticization at critical locations while maintaining overall production efficiency.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes the heat parameter (amount of heat applied) based on the spatial relationship between dots. By adjusting the heat amount according to whether a dot is adjacent to a non-heated dot, the system prevents dot collapse while maintaining efficient stamp face formation.

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

This approach effectively suppresses dot collapse by optimizing heat distribution, ensuring high-quality stamp face formation with reduced ink permeation and improved print accuracy.

Implementation Method 1

a stamp face forming part including a plurality of heating elements arranged in a direction along a surface holding a porous stamp face material that can be made non-porous by heating

Methodology Applied

Scientific EffectHeating: Heating

Implementation Method 2

an amount of heat per dot for a dot to be heated directly adjacent to a dot to be non-heated is less than an amount of heat per dot for a dot to be heated not directly adjacent to the dot to be non-heated

Methodology Applied

Scientific EffectThermal plasticization: Plasticity

Data Source

PatentUS9399361B2Stamp face forming apparatus, stamp face forming method, and medium

Publication Date: 2016.07.26 CASIO COMPUTER CO LTD

AI summary

A stamp face forming apparatus includes a stamp face forming part including a plurality of heating elements arranged in a direction along a surface holding a porous stamp face material that can be made non-porous by heating, and a drive circuit for controlling heat generating states of the plurality of heating elements to form a stamp face on the stamp face material; and a controller for controlling the drive circuit of the stamp face forming part by adjusting a signal to be applied to the drive circuit such that an amount of heat per dot for a dot to be heated directly adjacent to a dot to be non-heated is less than an amount of heat per dot for a dot to be heated not directly adjacent to the dot to be non-heated in image data for forming the stamp face.