Repositionable Sheet Stack Edge Guide With Integrated Latch Lever
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Solution Overview
Problem
Existing stack edge guides for print media trays require complex and unintuitive manual actions to reposition, often necessitating simultaneous pinching and sliding movements, which can be difficult for users and prone to accidental damage, and typically allow movement in only one direction.
Innovation Solution
A repositionable stack edge guide with an integrated latch disengaging system and movement mechanism, featuring an upstanding lever arm that can be manually moved in both directions to unlatch and reposition the guide, eliminating the need for separate actions and allowing bi-directional movement with a single finger push or pull.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional stack edge guides use separate latching and movement mechanisms, then the guide can be securely held in position, but the operation becomes complex requiring simultaneous pinching and sliding actions
Solution Approach 1:
The patent combines the latching mechanism and movement function into a single integrated lever arm. When the lever arm is moved, it simultaneously disengages the latch from the latching surface and allows the guide to slide to a new position. This merging of functions eliminates the need for separate pinching and sliding actions, directly resolving the contradiction between secure positioning and ease of operation.
Solution Approach 2:
The lever arm serves multiple functions: it acts as both the latching/disengaging mechanism and the movement actuator. By making this single component multi-functional, the design eliminates the need for separate controls for latching and positioning, thereby simplifying the user interaction while maintaining reliable positioning through the latching system.
2Device complexity
If stack edge guides allow movement in only one direction, then the mechanism is simpler, but the guide cannot accommodate different paper sizes requiring reduction in both directions
Solution Approach 1:
The patent makes the lever arm movable in both directions along its mounting track, enabling the guide to be repositioned dynamically to accommodate different paper sizes. The lever arm can slide bidirectionally while maintaining its latching capability at various positions, providing adaptability without significantly increasing mechanism complexity.
3Manufacturing precision
If multiple simultaneous manual actions are required to adjust the edge guide, then precise positioning is achieved, but the operation becomes difficult for casual users and may cause accidental damage
Solution Approach 1:
By merging the latching release and position adjustment into a single lever arm movement, the patent maintains positioning accuracy through the latching system while dramatically improving user friendliness. The user simply needs to move the lever arm to the desired position, and the latch automatically secures it, eliminating the need for coordinated multi-action operations.
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 provides a more intuitive and user-friendly operation, reducing the risk of damage and accommodating different print media sizes with automatic latching in the desired position, enhancing usability for casual users and compliance with accessibility regulations.
Implementation Method 1
an upstanding lever arm which is manually moveable in both of said opposite repositioning movement directions of said stack edge guide and operatively connected to said latching system
Implementation Method 2
pivoting a respective one of said two different spaced apart pivot areas against a camming surface on said stack edge guide to lift a latch engagement surface
Data Source
AI summary
A more intuitive and easier to use repositionable sheet stack edge guide, in which a single simple manual movement of a single visible upstanding member in either of the opposite possible repositioning directions can both automatically unlatch the edge guide latching system from its previously latched position by the partial pivoting of that member and also move the edge guide in its desired repositioning direction.