Print Head Maintenance Unit Positioning Mechanism
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Solution Overview
Problem
Existing image recording devices require complex mechanisms for switching between image recording, maintenance, and manual task states, necessitating frequent attachment and detachment of the maintenance unit, which is inefficient and cumbersome.
Innovation Solution
An image recording device with a support member, print head, maintenance unit, first guide mechanism for moving the print head between image recording and maintenance positions, and a second guide mechanism for moving the maintenance unit between withdrawn and maintenance positions, allowing for efficient switching between states without the need for frequent attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the maintenance unit is frequently attached and detached to switch between maintenance state and other states, then the maintenance function can be implemented, but the operation becomes cumbersome and inefficient
Solution Approach 1:
The maintenance unit is configured to automatically engage with the print head when the carriage moves to the maintenance position, eliminating the need for manual attachment and detachment operations. The system uses the movement of the carriage itself to trigger the maintenance engagement, making the operation self-service and improving efficiency.
2Adaptability or versatility
If complex mechanisms are used to support the print head and maintenance unit for state switching, then the maintenance and manual task states can be achieved, but the device complexity increases
Solution Approach 1:
The carriage structure serves multiple functions: it transports the print head during recording operations and automatically positions the maintenance unit for maintenance operations. This multi-functionality eliminates the need for separate complex mechanisms for each state transition, reducing overall device complexity while maintaining versatility.
Solution Approach 2:
The maintenance unit is integrated with the carriage structure, combining the recording and maintenance functions into a single movable assembly. This merging of functions allows seamless transition between recording and maintenance states without requiring separate complex support mechanisms.
3Reliability
If the maintenance unit is positioned close to the print head for maintenance, then maintenance effectiveness is improved, but the device size increases
Solution Approach 1:
The maintenance unit is positioned in the vertical dimension above or below the print head rather than horizontally adjacent to it. This vertical positioning allows close proximity for effective maintenance while minimizing the horizontal footprint of the device, thus reducing overall device size while maintaining maintenance effectiveness.
Data Source
AI summary
An image recording device includes a support member, a print head, a maintenance unit, a first guide mechanism and a second guide mechanism. The first guide mechanism is configured to guide movement of the print head between the image recording position and the maintenance-receiving position. The second guide mechanism is configured to guide movement of the maintenance unit between a withdrawn position for separating away from the print head and a maintenance position for drawing nearer to the print head than the withdrawn position while the maintenance unit faces the print head disposed at the maintenance-receiving position. A surface of the maintenance unit facing the print head when the maintenance unit is at the withdrawn position is disposed farther away from the print head in a movement direction of the maintenance unit than a portion of the support surface that is disposed closest to the print head.