Printing Transport Path Dynamics for Jammed Media Access
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Solution Overview
Problem
In ink jet recording apparatuses, the transportation path configuration with downward and upward sections at the same level leads to interference between components when the path is uncovered, preventing it from being fully exposed.
Innovation Solution
A transportation apparatus with a cover and path formation portions that move in response to the cover's opening and closing, allowing the transportation path to be fully uncovered while maintaining a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the transportation path has downward and upward sections at the same level to increase path length without increasing apparatus size, then the transportation path length is improved, but component interference occurs when the path is uncovered
Solution Approach 1:
The first path formation portion is made movable between a first position (defining downward path) and a second position (away from downward path) through a movement portion. This dynamic adjustment allows the transportation path to be fully uncovered when the cover opens, resolving the interference problem while maintaining the compact downward-upward path configuration for extended path length
Solution Approach 2:
The movement portion is configured to move the first path formation portion to the second position in advance when the cover opens, and to the first position when the cover closes. This preliminary action prevents component interference before it occurs, enabling smooth cover operation while maintaining the space-efficient path design
2Device complexity
If the first path formation portion stays in the apparatus body to define the downward path, then the path structure is simplified, but it interferes with the second path formation portion when the cover opens
Solution Approach 1:
The first path formation portion transitions from a fixed structure to a movable one, capable of shifting between defining the downward path (first position) and moving away from it (second position). This dynamic behavior eliminates interference with the second path formation portion during cover opening while maintaining structural simplicity during closed operation
Solution Approach 2:
The transportation path is segmented into distinct functional portions: the first path formation portion (movable, defines downward path), the second path formation portion (on cover, defines upward path), and the movement portion (enables positional change). This segmentation allows each component to perform its function independently without interference, resolving the contradiction between structural simplicity and operational ease
Data Source
AI summary
A transportation portion includes an apparatus body, a cover, first and second path formation portions, and a movement portion. The apparatus body has a transportation path including a downward path and an upward path having portions located at the same level in the Z direction. The cover covers and uncovers the transportation path. The first path formation portion is movable to a first position and to a second position. The second path formation portion defines the upward path and defines the downward path with the first path formation portion. The movement portion moves the first path formation portion in response to opening or closing of the cover. The first path formation portion is positioned in a movement area during a closed state. The movement portion moves the first path formation portion to the second position when the cover is opened and to the first position when the cover is closed.