Sheet Placement Table Raising Mechanism for Printer Usability
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Solution Overview
Problem
Existing sheet conveying devices require users to wait for the sheet placement table to return to its initial position after each image processing operation, which can be inconvenient for immediate subsequent image processing tasks.
Innovation Solution
A sheet conveying device with a raising/lowering control mechanism that lowers the sheet placement table upon detection of a human by a human detection sensor, allowing for immediate preparation for the next image processing task without waiting for the table to return to its initial position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sheet placement table is raised after image processing to enhance visibility and prevent forgetting sheets, then sheet visibility and user reminder function are improved, but user convenience for immediate subsequent tasks deteriorates due to required waiting time
Solution Approach 1:
The sheet placement table transitions from a static position to a dynamic raising/lowering mechanism. The table can be raised to enhance visibility and remind users of completed tasks, then lowered upon detecting user presence to restore convenience for immediate subsequent operations. This dynamic adjustment resolves the contradiction between maintaining reliability (visibility/reminder) and ease of operation (convenience).
Solution Approach 2:
A detection means (human detection sensor) provides feedback about user presence to the control system. When the sensor detects a user approaching or present in the detection region, the control system automatically lowers the sheet placement table, eliminating the need for manual intervention and seamlessly transitioning from the reminder state back to the operational state.
2Reliability
If the sheet placement table remains in the raised position after image processing, then sheet visibility is maintained, but productivity decreases due to waiting time before next task
Solution Approach 1:
The system performs preliminary action by automatically lowering the sheet placement table in advance when a user is detected approaching the device. This proactive adjustment ensures the table is ready for the next task before the user actually needs to perform it, eliminating waiting time and maintaining high productivity while preserving visibility when needed.
Solution Approach 2:
The dynamic raising/lowering mechanism allows the system to switch between visibility mode (raised) and productivity mode (lowered) based on real-time user presence detection, ensuring optimal performance for each operational phase without compromising either reliability or throughput.
3Ease of operation
If a human detection sensor is added to automatically lower the sheet placement table, then ease of operation and productivity are improved, but device complexity increases
Solution Approach 1:
The human detection sensor provides automatic feedback about user presence to the control system, enabling seamless automatic adjustment of the sheet placement table. This feedback mechanism eliminates the need for manual user actions while maintaining simple operation, with the added complexity being justified by the significant improvement in ease of operation and productivity.
Solution Approach 2:
The system performs self-service by automatically detecting user presence and adjusting the table position without requiring manual intervention. The detection means and control system work together to autonomously manage the table's state, improving ease of operation while the added components remain integrated into the existing device architecture.
Data Source
AI summary
A sheet conveying device includes a sheet placement table, a sheet discharge table, a conveyance mechanism, raising/lowering mechanism, and a raising/lowering control portion. The sheet discharge table is located below the sheet placement table. The conveyance mechanism conveys a sheet placed on the sheet placement table onto the sheet discharge table via an execution position at which image processing is executed by an image processing portion. The raising/lowering mechanism raises and lowers the sheet placement table. The raising/lowering control portion controls the raising/lowering mechanism to lower the sheet placement table when a human detection sensor configured to detect a human in a detection region has detected a human in the detection region.