Image Reader Switchable Multi-Sheet Detection for Data Merging
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Solution Overview
Problem
Image reading apparatuses often erroneously detect multi-sheet feeds, leading to laborious manual feeding of documents or splitting of read data into multiple files, especially with documents like envelopes and center-folded papers.
Innovation Solution
The apparatus includes a transport section, reading section, output controller, multi-sheet feed detection section, and instruction section to disable multi-sheet feed detection during job interruptions, allowing data from before and after the interruption to be merged into a single file.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multi-sheet feed detection is enabled to detect actual multi-sheet feeds, then detection accuracy improves, but documents like envelopes and center-folded papers are erroneously detected as multi-sheet feeds causing job interruptions
Solution Approach 1:
The patent applies dynamics by making the multi-sheet feed detection function switchable between enabled and disabled states. The determination section dynamically changes the detection status based on whether a job interruption has occurred, allowing the system to adapt between high detection accuracy and uninterrupted operation modes.
2Reliability
If documents are manually fed one by one in non-separation mode to avoid erroneous detection, then erroneous detection is avoided, but laborious manual feeding is required
Solution Approach 1:
The patent extracts the multi-sheet feed detection function from the normal operation flow by making it selectively disableable. When a job interruption occurs, the determination section disables the detection function, effectively removing it from the operation chain and allowing automatic feeding to continue without manual intervention.
3Extent of automation
If separation mode is used to automatically transport documents, then automatic transport is achieved, but multi-sheet feed detection causes job interruptions and data splitting
Solution Approach 1:
The system dynamically adjusts the detection function based on operational state. The determination section monitors job interruptions and disables multi-sheet feed detection when interruptions occur, allowing automatic transport to continue uninterrupted while maintaining the ability to detect actual multi-sheet feeds when no interruptions have occurred.
Data Source
AI summary
An image reading apparatus includes a transport section that can transport original documents along a transport path, a reading section configured to read images of the original documents transported by the transport section, an output controller configured to output data of the original documents read by the reading section, a multi-sheet feed detection sensor configured to detect a multi-sheet feed of the original documents transported by the transport section, and an instruction section configured to issue an instruction to disable multi-sheet feed detection by the multi-sheet feed detection section.