Sheet Conveying Device Width Deviation Correction
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Solution Overview
Problem
In image forming apparatuses, positional deviations of sheets in the width direction during conveying lead to inefficient correction processes, resulting in prolonged conveying intervals as the correction rollers must move to a reference position after each correction, disrupting continuous sheet conveyance.
Innovation Solution
A sheet conveying device with a pair of conveying members that detect deviations, move based on detected amounts, and determine when to return to a reference position after conveying, ensuring efficient alignment and minimizing interval disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the conveying members are moved to a reference position after every sheet correction, then the sheet position accuracy is improved, but the conveying interval becomes prolonged and continuous conveyance is disrupted
Solution Approach 1:
The conveying members transition from a static reference position to a dynamic correction position during sheet conveyance. The conveying members are moved to a correction position corresponding to the detected sheet position deviation, allowing real-time correction without returning to the reference position after each sheet, thus maintaining continuous conveyance while ensuring position accuracy.
2Productivity
If the conveying members remain at the correction position for continuous sheets with similar deviations, then the conveying efficiency is improved, but the position accuracy for sheets requiring different correction may deteriorate
Solution Approach 1:
The system continuously detects the position deviation of each sheet and provides feedback to the control unit. Based on this feedback, the conveying members are dynamically adjusted to the appropriate correction position. This closed-loop control ensures that each sheet receives the precise correction it needs while maintaining efficient continuous conveyance.
Data Source
AI summary
A sheet conveying device includes a pair of conveying members, a detection processing portion, a first movement processing portion, and a second movement processing portion. The pair of conveying members nip and convey a sheet, the pair of conveying members being movably provided along a width direction of the sheet. The detection processing portion detects a deviation amount of the sheet conveyed by the pair of conveying members in the width direction. The first movement processing portion causes the pair of conveying members that are nipping the sheet to move along the width direction based on the detected deviation amount. The second movement processing portion causes, when determined that a movement condition is satisfied in a case of moving the pair of conveying members, the pair of conveying members that have finished conveying the sheet to move to a reference position.