Inkjet Recording Head Angle Adjustment Mechanism
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Solution Overview
Problem
Linehead type inkjet recording apparatuses face challenges in achieving uniform angles of recording heads, leading to potential image quality issues such as vertical stripe noise due to non-uniform positioning of recording heads that eject the same color ink.
Innovation Solution
A head assembly with a base member, recording heads, coupling members, rotating shaft members, and angle adjustment mechanisms allows for precise adjustment of recording heads' angles by rotating them about their respective shafts, ensuring parallel alignment in a plane, thereby improving image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If recording heads are fixed in position without adjustment mechanisms, then the device structure is simple, but the positioning precision and angle uniformity of recording heads deteriorate
Solution Approach 1:
The patent applies the dynamics principle by making the recording heads rotatable about rotating shaft members rather than fixed. Each recording head can be rotated to adjust its angle relative to the base member, transforming a static structure into a dynamic one that allows for precise angular positioning. This enables the recording heads to achieve uniform angles while maintaining a relatively simple overall structure through the use of rotation mechanisms.
2Manufacturing precision
If recording heads are arranged without angle adjustment capability, then the device is easy to manufacture, but the angle uniformity and parallel alignment of recording heads deteriorate
Solution Approach 1:
The patent applies preliminary action by providing angle adjustment mechanisms that allow the recording heads to be positioned and adjusted to precise angles during assembly. The rotating shaft members and coupling members enable the recording heads to be pre-adjusted to uniform angles before final installation, ensuring proper parallel alignment. This preliminary adjustment capability simplifies the overall manufacturing process by allowing for easier assembly with correct positioning.
3Ease of operation
If recording heads are rigidly coupled to base member, then the structure is simple and stable, but the ability to adjust angles and achieve parallel alignment deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the coupling between recording heads and base member into multiple independent components: rotating shaft members, coupling members, and angle adjustment mechanisms. Each recording head is independently coupled through its own rotating shaft and coupling members, allowing individual angle adjustment without affecting other recording heads. This segmented approach provides the necessary adjustability while keeping each individual coupling mechanism relatively simple.
Data Source
AI summary
A head assembly includes a base member, a recording head, a first coupling member, a second coupling member, a first rotating shaft member, and a first angle adjustment mechanism. The first coupling member couples a first end of the recording heads to the base member. The second coupling member couples a second end of the recording head to the base member. The first rotating shaft member functions as a rotating shaft of the recording head. The first angle adjustment rotates the recording head about the first rotating shaft member as a rotation center. The first rotating shaft member is provided for the first coupling member. The first angle adjustment mechanism is provided for the second coupling member.