Angled Head Chip Mounting for Synchronized Ink Landing
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Solution Overview
Problem
Existing liquid ejecting heads, such as those in inkjet printers, have limited configurations for arranging multiple head chips on a fixing plate, lacking variation and leading to inconsistencies in ink landing times due to parallel alignment, which affects printing quality.
Innovation Solution
The liquid ejecting head incorporates a fixing plate that bends to fix two types of head chips at different angles, allowing their nozzles to face different directions, reducing the difference in ink landing times by aligning them closer together.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple head chips are arranged parallel to a plane on the fixing plate, then the device complexity is reduced and manufacturing is simplified, but the ink landing times become inconsistent affecting printing quality
Solution Approach 1:
The patent transitions from a two-dimensional parallel arrangement of head chips on a flat fixing plate to a three-dimensional configuration where head chips are arranged at different angles (e.g., 45 degrees) relative to each other. This angular arrangement in multiple dimensions allows ink droplets from different nozzles to reach the medium simultaneously, resolving the landing time inconsistency problem while maintaining structural feasibility.
Solution Approach 2:
The patent introduces asymmetric arrangement of head chips on the fixing plate, where head chips are positioned at different orientations (e.g., first head chip at 0 degrees, second head chip at 45 degrees) rather than symmetric parallel alignment. This asymmetric configuration compensates for positional differences and achieves synchronized ink deposition, improving printing quality without requiring complex additional components.
2Manufacturing precision
If head chips are arranged at different angles on the fixing plate, then ink landing time consistency is improved, but the device complexity increases
Solution Approach 1:
The fixing plate is segmented into multiple functional regions, each accommodating a head chip at a specific angle. The plate includes distinct flat plate portions for each head chip and bent portions connecting them, allowing each segment to be positioned independently at the required orientation. This segmentation simplifies the manufacturing process by enabling modular assembly while achieving the desired angular arrangement for synchronized ink deposition.
Data Source
AI summary
A liquid ejecting head includes a first head chip, a second head chip, and a fixing plate, in which the fixing plate includes a first flat plate portion including a first fixing surface to which the first head chip is fixed, and a first surface that is opposite from the first fixing surface, and a second flat plate portion including a second fixing surface to which the second head chip is fixed, and a second surface that is opposite from the second fixing surface, the first surface and the second surface are caused to face different directions from each other by bending the fixing plate, and in a view from a first direction along an intersection line between the first surface and the second surface, an angle formed between the first surface and the second surface is less than 180 degrees.