Media Registration System Lateral Alignment via Sensor Feedback
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Solution Overview
Problem
Existing media registration systems for image forming apparatuses, such as printers, fail to accurately align and stack sheets due to media feed errors and varying sheet properties, leading to misalignment and improper accumulation, which can result in errors during secondary operations like stapling and hole-punching.
Innovation Solution
A media registration system that employs sensors to monitor the position of each media sheet and a translator to adjust the registration end's position, ensuring accurate alignment of sheets before allowing secondary operations, with the system halting or completing the stack based on alignment status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mechanical mechanisms are used to tap and convey media sheets, then media transport is achieved, but positioning accuracy deteriorates due to media feed errors and varying sheet properties
Solution Approach 1:
The patent replaces mechanical positioning mechanisms with an optical sensing system. Media sensors detect the position of each sheet's leading edge, and a controller calculates required adjustments based on detected positions rather than relying solely on mechanical tapping and conveying. This substitution of mechanical systems with optical detection and electronic control resolves the contradiction by achieving both efficient transport and high positioning accuracy.
Solution Approach 2:
The patent implements a feedback control system where media sensors continuously monitor sheet positions, the controller processes this position information, and adjusts the registration end position accordingly. This closed-loop feedback mechanism allows the system to compensate for media feed errors and varying sheet properties in real-time, maintaining positioning accuracy while preserving transport productivity.
2Device complexity
If media sheets are conveyed without continuous position monitoring, then device complexity is reduced, but alignment precision deteriorates
Solution Approach 1:
The patent divides the media transport system into distinct functional segments: media sensors for position detection, a controller for processing and decision-making, and a registration end for physical alignment. This segmentation allows each component to perform its specific function efficiently, with sensors providing continuous position data that feeds into the controller's alignment calculations, achieving high precision without overwhelming complexity.
Solution Approach 2:
The controller acts as an intermediary between the media sensors and the registration end. It receives position data from sensors, calculates required adjustments, and controls the registration end's movements. This intermediary function consolidates the complexity in a centralized unit while maintaining simple sensor-to-controller and controller-to-registration-end connections, achieving precise alignment without proportionally increasing overall system complexity.
3Device complexity
If registration end position is fixed, then device complexity is minimized, but adaptability deteriorates面对 varying sheet properties and feed errors
Solution Approach 1:
The patent transforms the registration end from a fixed position to a dynamically adjustable position. The registration end can move laterally in response to detected sheet positions and calculated adjustments. This dynamic capability allows the system to adapt to varying sheet properties and feed errors without requiring complex adjustment mechanisms throughout the entire system, as only the registration end needs to be movable while maintaining relatively simple overall device complexity.
Data Source
AI summary
A media registration system including an accumulation region and a transport track to receive and transport each media sheet of a series of media sheets forming a media job in a transport direction from an intake end to a registration end proximate to the accumulation region, and to stack the media sheets of the media job in the accumulation region to form a job stack. A translator adjusts a position of the registration end of the transport track in a direction lateral to the transport direction for each sheet to align edges of each sheet of the job stack in the lateral direction. A media sensor indicates a position of each sheet along the media path to facilitate a controller to determine an accumulation status of the job stack.