Original Reading Apparatus Double Feed Detection Control
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Solution Overview
Problem
Existing original reading apparatuses lack the ability to automatically switch the double feed detection function between valid and invalid modes, particularly when handling documents like envelopes where stopping the reading operation is not necessary upon detection of double feed.
Innovation Solution
An original reading apparatus with a conveying unit, reading unit, setting unit, and control unit that allows users to set whether to validate or invalidate the double feed detection function based on the detection of originals stacked on an original stacking unit, enabling the apparatus to switch between interrupting and continuing the conveyance accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the double feed detection function is validated to automatically stop reading operation upon detection of double feed, then the reliability of original processing is improved, but the adaptability to different document types (e.g., envelopes) deteriorates
Solution Approach 1:
The patent applies dynamics by making the double feed detection function switchable between valid and invalid modes based on the original type. The control unit dynamically changes the detection function's state according to whether the original is a regular document or an envelope, allowing the system to adapt its behavior to different processing requirements while maintaining reliability for each document type
Solution Approach 2:
The patent changes the operational parameter of the double feed detection function (valid/invalid state) based on the detected original type. When an envelope is detected, the system changes the detection function parameter to invalid mode, allowing continuous conveyance. When regular documents are detected, it switches to valid mode for automatic stopping, thus resolving the contradiction through parameter adaptation
2Productivity
If the double feed detection function is invalidated for envelope reading to allow continuous conveyance, then the productivity is improved, but the reliability of detecting actual double feed deteriorates
Solution Approach 1:
The system changes the operational parameter of the detection function based on original type identification. For envelopes, it sets the detection function to invalid mode to maintain continuous conveyance and high productivity. For regular documents, it sets the function to valid mode to ensure reliable double feed detection and automatic stopping, thus achieving context-dependent optimization
3Adaptability or versatility
If users manually switch the double feed detection function for each job type, then the adaptability to different document types is improved, but the ease of operation deteriorates
Solution Approach 1:
The patent implements self-service by enabling the system to automatically identify the original type (envelope or regular document) and autonomously switch the double feed detection function accordingly. The original type identification unit and control unit work together to automatically configure the appropriate detection mode without requiring manual user intervention, thus improving ease of operation while maintaining adaptability
Solution Approach 2:
The system uses feedback from the original type identification unit to automatically adjust the detection function state. The control unit receives information about the detected original type and automatically switches the detection function between valid and invalid modes, eliminating the need for manual user configuration and simplifying operation while preserving customization capability
Data Source
AI summary
An original reading apparatus conveys an original placed on an original stacking unit, reads the conveyed original, makes a setting about whether to validate a function of interrupting conveyance of originals upon detection of double feed of the originals during conveyance of the originals in accordance with detection of originals stacked on the original stacking unit, detects an original placed on the original stacking unit, and validates the function based on the made setting in accordance with detection of the original by the original detection unit.