Pressure-Balanced Print Head Mechanism for Uniform Carrier Printing

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Solution Overview

Problem

Current printing apparatuses lack a pressure-adjusting mechanism to maintain uniform printing quality when handling carrier bodies of varying widths and thicknesses, leading to non-uniform color and lining issues due to unbalanced forcing at the print head.

Innovation Solution

A pressure-balanced mechanism for the print head, comprising a fixation frame, pivot point assembly, print head assembly, and depression assembly, which includes a supportive shaft, pivotal structure, frame structure, print head module, fix shaft, and depression structures, allowing for adjustable three-point equilibrium and distributed pressure to ensure uniform printing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed-spec printing apparatus is used to handle carrier bodies of varying widths and thicknesses, then the apparatus can accommodate different sizes, but the print head generates non-uniform printing due to unbalanced forcing

Engineering Contradiction:
Improveaccommodation of different carrier body sizesVSAvoidprinting uniformity
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent implements a dynamic pressure balancing mechanism where the print head assembly can pivot around a pivot point, allowing the pressing force to be dynamically adjusted based on the carrier body thickness. The depression structure with adjustable depression amount enables the system to adapt to varying carrier body dimensions while maintaining uniform printing pressure, resolving the contradiction between adaptability and printing precision

Inventive Principle:
Principle #15Dynamics

2Device complexity

If the print head is fixed without pressure-adjusting mechanism, then the structure is simple, but non-uniform printing occurs on carrier bodies with variant thicknesses

Engineering Contradiction:
Improvestructure simplicityVSAvoidprinting uniformity
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The patent segments the pressure application mechanism into distinct functional components: the pivot point assembly that enables rotational movement, the depression structure with adjustable depression amount, and the print head assembly. This segmentation allows each component to perform its specific function while maintaining overall structural simplicity, achieving uniform printing without excessive complexity

Inventive Principle:
Principle #1Segmentation

3Device complexity

If the print head applies uniform force to all carrier bodies, then the mechanism is simple, but printing quality deteriorates on carrier bodies with different thicknesses

Engineering Contradiction:
Improvemechanism simplicityVSAvoidprinting quality consistency
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent changes the pressure application parameter by introducing an adjustable depression amount in the depression structure. This allows the pressing force to be varied according to carrier body thickness, maintaining printing quality consistency across different carrier bodies while keeping the mechanism relatively simple through a single adjustable parameter

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS9132675B1Pressure-balanced mechanism for a print head
Publication Date: 2015.09.15 TSC AUTO ID TECHNOLOGY CO LTD
  • US9132675B1 patent drawing
  • US9132675B1 patent drawing
  • US9132675B1 patent drawing

AI summary

A pressure-balanced mechanism for a print head includes a fixation frame, a pivot point assembly, a print head assembly and a depression assembly. The pivot point assembly further includes a supportive shaft and a pivotal structure. The supportive shaft is connected to the fixation frame. The pivotal structure is to movably sleeve the supportive shaft. The print head assembly further includes a frame structure and a print head module. The frame structure is to sleeve the supportive shaft and has the pivotal structure to contact at an inside thereof. The print head module is mounted inside the frame structure by separating from the pivotal structure. The depression assembly further includes a fix shaft and two depression structures. The fix shaft is connected to the fixation frame. The depression structure slippery along the fix shaft can contact elastically the frame structure outside to the print head module.