Slider-Guided Paper Path Positioning for Compact Jam-Clearance Printers
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Solution Overview
Problem
Existing printing apparatuses face challenges in saving workspace for positioning a platen and conveyance roller, and require cumbersome manual operations for jam removal due to separate and independently opening platen and platen support members.
Innovation Solution
The printing apparatus incorporates a slider that moves between positions to facilitate the positioning of conveyance-path guides, allowing for a compact design and simple operation for jam removal by integrating the platen and conveyance roller positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the platen support member pivots about a vertical axis when closed to position the platen and conveyance roller, then the positioning is achieved, but a large work space is used which is not suitable for a small apparatus
Solution Approach 1:
Instead of pivoting the platen support member about a vertical axis, the invention inverts the approach by using a slider mechanism that moves horizontally to simultaneously position both the platen and conveyance roller. This inversion of the positioning mechanism eliminates the need for large rotational work space while achieving accurate positioning.
Solution Approach 2:
The invention merges the positioning functions of the platen and conveyance roller into a single slider mechanism. The slider simultaneously positions both components along the sheet conveyance direction, consolidating what would otherwise require separate positioning mechanisms and large work space into one compact integrated system.
2Ease of operation
If the platen and platen support member are separate members that open and close independently, then the jam removal access is provided, but the operation becomes troublesome requiring multiple manual steps
Solution Approach 1:
The invention merges the platen and platen support member into an integrated assembly that opens and closes as a single unit. This eliminates the need for independent operation of separate members, reducing the number of manual steps required for jam removal while maintaining full access to the printing area.
Solution Approach 2:
The integrated platen assembly serves multiple functions: it provides the printing surface, supports the conveyance roller, and enables jam removal access. By combining these functions into a single operable unit, the system achieves multi-functionality without requiring multiple separate manual operations.
3Area of stationary object
If the slider positions both the first conveyance-path guide and the second conveyance-path guide simultaneously, then the work space is saved, but the positioning mechanism becomes more complex
Solution Approach 1:
The invention uses a dynamic slider mechanism that can move along the sheet conveyance direction to position both conveyance-path guides simultaneously. The slider's linear motion dynamically adjusts the positions of both guides in coordination, achieving compact space utilization while managing complexity through a single degree of freedom motion.
Solution Approach 2:
The slider acts as an intermediary mechanism that mediates the positioning of both the first and second conveyance-path guides. By introducing this intermediate component, the system achieves simultaneous positioning of multiple elements through a single controlled motion, saving work space while distributing the positioning function through the intermediary slider.
Data Source
AI summary
A printing apparatus includes a housing, a first conveyance-path guide, a second conveyance-path guide, and a slider. The first conveyance-path guide is disposed in the housing. The first conveyance-path guide includes a first guide surface defining a first conveyance path. The second conveyance-path guide is disposed in the housing. The second conveyance-path guide includes a second guide surface defining a second conveyance path. The slider is disposed in the housing. The slider is movable between a first position and a second position. At the first position, the slider contacts and positions each of the first conveyance-path guide and the second conveyance-path guide. At the second position, the slider separates from the first conveyance-path guide and the second conveyance-path guide, and releases positioning of the first conveyance-path guide and the second conveyance-path guide.