Inkjet Recording Head Staggered Substrate Arrangement
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Solution Overview
Problem
Full-line inkjet recording heads are larger than reciprocating-scanning heads, making them less suitable for cost-effective and space-efficient applications, and current solutions do not adequately address the need for increased recording speed while maintaining a compact form factor.
Innovation Solution
The design includes a supporting plate with multiple recording element substrates and filters, where the filters are positioned on the opposite surface and the liquid supply flow paths are defined by vertical and inclined walls, allowing for staggered arrangement of recording element substrates to reduce the overall size of the inkjet recording head.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-line inkjet recording heads are used to increase recording speed, then recording speed is improved, but device size increases
Solution Approach 1:
The recording head is divided into multiple recording element substrates arranged in parallel rows on the supporting plate. Each substrate contains recording elements and discharge ports, allowing independent operation and compact arrangement. This segmentation enables the full-line recording capability while maintaining a compact overall structure that fits within standard printer assemblies.
Solution Approach 2:
The liquid supply flow paths utilize inclined walls that extend in alternating directions (first direction for one row, second direction opposite to the first for adjacent rows). This three-dimensional arrangement of flow paths allows efficient liquid distribution to all recording elements without increasing the planar footprint, thereby maintaining compact device size while supporting high recording speed.
2Productivity
If multiple recording element substrates are arranged on the supporting plate, then recording speed is improved, but device complexity increases
Solution Approach 1:
Multiple recording element substrates are integrated onto a single supporting plate structure, merging what would otherwise be separate components into one unified assembly. The supporting plate provides common liquid supply flow paths and structural support for all substrates, reducing the number of separate parts and simplifying assembly while maintaining high recording speed capability.
Solution Approach 2:
The supporting plate serves multiple functions: it provides mechanical support for the recording element substrates, contains the liquid supply flow paths for all substrates, and provides structural integration for the entire recording head assembly. This multi-functionality reduces device complexity by eliminating the need for separate support structures and fluid distribution systems.
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 a compact inkjet recording head capable of high-speed operation, reducing the size of the recording apparatus and improving space efficiency without compromising recording speed.
Implementation Method 1
The recording elements generate discharge energy for discharging the liquid from the discharge ports
Implementation Method 2
The recording elements generate discharge energy for discharging the liquid from the discharge ports
Implementation Method 3
The supporting plate is provided with a plurality of liquid supply flow paths that supply the liquid to the liquid supply ports at the respective recording elements
Data Source
AI summary
An inkjet recording head in which liquid supply flow paths formed in a first plate are defined by vertical walls and inclined walls. The vertical walls are perpendicular to surfaces of corresponding recording element substrates that contact the first plate. The inclined walls are inclined with respect to these surfaces. In the liquid supply flow paths that supply ink to ink supply ports of the recording element substrates arranged in one row, the inclined walls extend in a first direction along a direction of arrangement of the recording element substrates with respect to the vertical walls. In the liquid supply flow paths that supply the liquid to the liquid supply ports of the respective recording element substrates arranged in another row that is adjacent to the one row, the inclined walls extend in a second direction, which is opposite to the first direction, with respect to the vertical walls.