Recording Head Pressing Mechanism for Stable Positioning
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Solution Overview
Problem
The existing recording device in JP-A-2023-076882 faces instability in the posture of the head unit due to moments generated during movement, leading to potential failure in accurately positioning the recording head, which affects the recording process.
Innovation Solution
A recording device with a pressing unit that includes a first advancing and retreating member and a first pressing member, independent of the recording section, to cancel moments generated by the positioning section and movement mechanism, along with a second advancing and retreating member and a second pressing member within the recording section, to stabilize the posture and improve positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a unit-pressing unit is provided to cancel the rotation moment of the head unit at the recording position, then the posture stability of the head unit is improved, but the head unit cannot be moved appropriately to the recording position due to excessive pressing force becoming a load during movement
Solution Approach 1:
The pressing unit is designed with a movable pressing member that can dynamically adjust its position between pressing and non-pressing states. The pressing member is movable in the movement direction of the head unit, allowing it to be retracted during movement to reduce load and extended at the recording position to stabilize posture. This dynamic adjustment resolves the contradiction between posture stability and ease of movement.
Solution Approach 2:
The pressing member is retracted in advance before the head unit reaches the recording position, and the pressing force is applied only when the head unit is properly positioned. This preliminary action ensures smooth movement without excessive load while still achieving posture stabilization at the target position, resolving the contradiction between movability and posture stability.
2Manufacturing precision
If the pressing unit applies force to cancel the rotation moment, then the positioning accuracy is improved, but the pressing force creates excessive load during the movement from retreat position to recording position
Solution Approach 1:
The pressing force is applied dynamically only when needed for positioning, not continuously during movement. The pressing member moves to apply force only when the head unit reaches the recording position, reducing the overall force load during the movement process while maintaining positioning accuracy at the target position.
Solution Approach 2:
The pressing member is retracted in advance to prevent excessive pressing force from acting as a load during movement. By timing the application of pressing force to occur only after the head unit reaches the recording position, the system avoids the harmful effect of excessive force during movement while still achieving accurate positioning.
3Device complexity
If the pressing unit is composed of a rotatably provided rotation member and driven roller, then the structure is simplified, but the head unit receives excessive pressing force as a load when moving to the recording position
Solution Approach 1:
The pressing member in the simplified structure is made movable to dynamically adjust the pressing force. This allows the simple rotational structure to be enhanced with a degree of freedom that enables the pressing member to retract during movement and engage only when needed for positioning, reducing excessive force load while maintaining structural simplicity.
Solution Approach 2:
The pressing member is retracted in advance before the head unit reaches the recording position, preventing excessive pressing force from acting as a load during movement. This preliminary retraction maintains the simplicity of the rotational structure while avoiding the harmful effect of excessive force during the movement phase.
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
The solution stabilizes the posture of the recording section, allowing it to move appropriately to the positioning position, enhancing positioning accuracy and recording quality by suppressing loads and sudden forces.
Implementation Method 1
a first pressing member that is provided independently of the recording section and that presses the first advancing and retreating member toward the recording section
Implementation Method 2
a second pressing member that is provided in the recording section and that presses the second advancing and retreating member toward the first advancing and retreating member
Data Source
AI summary
A recording device includes a movement mechanism that moves a recording section along a movement direction between a recording position where the recording section records on a medium and a retreat position where the recording section is retreated from the recording position; a positioning section that determines a position of the recording section in the movement direction as a positioning position; and a pressing unit that, in a state where a part of the recording section is in contact with the positioning section, presses the recording section so as to cancel moment generated in the recording section by force received from the positioning section and the movement mechanism, wherein the pressing unit includes a first advancing and retreating member that is provided independently of the recording section and that is configured to advance and retreat with respect to the recording section, a first pressing member that is provided independently of the recording section and that presses the first advancing and retreating member toward the recording section, a second advancing and retreating member that is provided in the recording section and that is configured to advance and retreat with respect to the first advancing and retreating member, and a second pressing member that is provided in the recording section and that presses the second advancing and retreating member toward the first advancing and retreating member.