Inkjet Head Assembly Parallel Alignment Mechanism
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Solution Overview
Problem
Linehead type inkjet recording apparatuses face challenges in accurately positioning recording heads, leading to potential deviations in image density due to non-parallel nozzle surfaces and conveyance surfaces, which affect image quality.
Innovation Solution
A head assembly comprising a base member, recording heads, coupling members, and pressing members, where the coupling members include urging members to ensure the nozzle surfaces of the recording heads are parallel to the conveyance surface, allowing for precise height adjustment through the use of pressing members and support parts to maintain optimal alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If recording heads are mounted on a base member without additional positioning mechanisms, then the device complexity is reduced, but the manufacturing precision of nozzle surface alignment deteriorates
Solution Approach 1:
A positioning member is introduced as an intermediary component between the recording head and base member. This positioning member includes a positioning surface that contacts the nozzle surface of the recording head, serving as a mediator to achieve precise alignment without complex direct mounting structures
Solution Approach 2:
The invention replaces complex mechanical adjustment mechanisms with a spring member-based elastic positioning system. The spring member provides automatic mechanical positioning through elastic deformation, substituting for more complex mechanical alignment systems
2Manufacturing precision
If spring members are used to provide urging force for positioning, then the manufacturing precision of recording head alignment is improved, but the device complexity increases
Solution Approach 1:
The spring member serves multiple functions simultaneously: it provides urging force to maintain contact between the positioning member and recording head, compensates for dimensional variations in assembled parts, and enables automatic positioning. This multi-functionality reduces the need for additional separate components
Solution Approach 2:
The spring member enables self-service positioning through its elastic properties. When the recording head is mounted, the spring member automatically deforms to provide the necessary urging force, allowing the system to self-adjust and position the recording head without requiring external adjustment mechanisms
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 configuration enables accurate positioning of recording heads, ensuring parallel nozzle surfaces relative to the conveyance surface, thereby improving image quality by maintaining consistent image density and enhancing the overall performance of the inkjet recording apparatus.
Implementation Method 1
The coupling member includes a spring member that serves as an urging member to urge a lower surface of the recording head toward an upper surface of the recording head
Data Source
AI summary
A head assembly includes a base member, a recording head, a coupling member, and a pressing member. The recording head ejects ink. The coupling member couples the recording head to the base member. The pressing member is in contact with a first surface of the recording head. The coupling member includes an urging member that urges a second surface of the recording head toward the first surface of the recording head. The second surface of the recording head is a surface of the recording head on an opposite side from the first surface.