Stamp Face Forming Apparatus Thermal Head Heating Control
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Solution Overview
Problem
Existing stamp face forming apparatuses are costly due to the use of expensive edge heads and large size, making it difficult to reduce manufacturing costs while efficiently forming stamp faces on porous materials like sponge rubber.
Innovation Solution
A stamp face forming apparatus with a thermal printer configuration that includes a thermal head with heating elements arranged along the surface, a drive circuit to control heating, and a control unit that adjusts the heating amount per dot based on the decreasing length of the stamp face material, allowing for efficient formation of non-porous areas on the stamp face material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a thermal head with heating elements is used to form stamp faces on porous material, then manufacturing cost is reduced and device size is minimized, but heating uniformity deteriorates due to varying material width
Solution Approach 1:
The patent implements dynamic heating amount adjustment based on the actual width of the stamp face material. The control unit calculates the heating amount for each heating element according to its position and the material width, allowing the heating parameters to vary dynamically across different regions. This resolves the contradiction by maintaining heating uniformity (precision) while using a simple, cost-effective thermal head design rather than requiring complex edge heads or large apparatus.
Solution Approach 2:
The patent changes the heating parameters (heating amount, temperature, time) based on the position of each heating element and the width of the stamp face material. By adjusting these parameters dynamically, the system achieves uniform heating across materials of varying widths while using a simple, low-cost thermal head configuration, thus resolving the contradiction between manufacturing cost and heating precision.
2Device complexity
If the heating amount is uniformly applied across all heating elements, then the control process is simplified, but print quality deteriorates due to non-uniform heating on materials of varying widths
Solution Approach 1:
The control unit dynamically adjusts the heating amount for each heating element based on its position and the stamp face material width. This dynamic control ensures that each region receives appropriate heating to achieve uniform melting and solidification, maintaining high print quality without requiring overly complex control mechanisms.
Solution Approach 2:
The system automatically calculates and adjusts heating parameters based on the detected material width, eliminating the need for manual intervention or complex external control systems. The control unit self-adjusts the heating amounts according to the position information and material characteristics, achieving both simplicity and precision.
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 solution enables the formation of high-quality stamp faces with reduced manufacturing costs by optimizing the heating process based on the width of the stamp face material, preventing ink passage through specific areas and ensuring uniform print quality across varying material widths.
Implementation Method 1
selectively heats heating elements of the thermal head, and makes, on the stamp plate, a stamp face including melted and solidified portions that do not allow the ink to pass through
Implementation Method 2
moves a thermal head while pressing the thermal head against the surface of the porous sheet, selectively heats heating elements of the thermal head
Data Source
AI summary
A stamp face forming apparatus includes: a stamp face forming unit having a plurality of heating elements arranged in a direction along a surface on which a porous stamp face material being able to become nonporous by heating is held, and a drive circuit for controlling the heating states of the plurality of heating elements, the stamp face forming unit being configured to form a stamp face on the stamp face material while pressing the stamp face material; and a control unit configured to control the drive circuit of the stamp face forming unit in such a manner as to reduce the heating amount per one dot to be heated of the stamp face material in the arrangement direction of the plurality of heating elements corresponding to a decreasing length of the stamp face material in the arrangement direction of the plurality of heating elements.