Medium Conveyance Device Staple Detection and Mode Switching

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Solution Overview

Problem

Existing medium conveyance devices face issues when handling bound mediums with staples, as direct separation can damage the medium or cause paper jams, and existing technologies lack efficient methods to differentiate between single and multi-page documents for proper separation and processing.

Innovation Solution

A medium conveyance device equipped with a first separator, a processor, and a second separator, along with a controller that switches between non-separation and separation modes based on processing information, uses sensors and actuators to detect and handle staples, ensuring safe conveyance and separation of documents, preventing damage and jams.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a separator directly separates bound mediums with staples, then separation efficiency is improved, but the medium may be damaged or paper jams may occur

Engineering Contradiction:
Improveseparation efficiencyVSAvoidmedium integrity
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system performs preliminary detection of staples using a sensor before the separation action is executed. Based on the detection result, the controller determines whether to activate the separator, thus preparing in advance to avoid damaging bound mediums while maintaining separation efficiency for loose documents

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The sensor provides feedback information about the presence of staples to the controller, which then adjusts the separation operation accordingly. This feedback mechanism allows the system to adapt its separation behavior based on the actual state of the medium, preventing damage to bound documents while maintaining efficiency for separable documents

Inventive Principle:
Principle #23Feedback

2Speed

If a separator separates all mediums, then document processing speed is improved, but bound mediums may be damaged

Engineering Contradiction:
Improvedocument processing speedVSAvoiddamage to bound mediums
Core Design Contradiction:
SpeedVSObject-affected harmful factors

Solution Approach 1:

The sensor detects staples in advance before the separator operates, allowing the controller to make a predetermined decision about whether to perform separation. This preliminary detection prevents harmful separation actions on bound mediums while maintaining fast processing speed for documents that can be safely separated

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The sensor acts as an intermediary between the document and the separator, providing information about the document's binding state. This intermediary detection mechanism allows the controller to mediate the separation process, enabling it to proceed only when safe, thus preventing damage while maintaining overall processing efficiency

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If the device adds detection and control mechanisms, then handling of bound mediums is improved, but device complexity increases

Engineering Contradiction:
Improvehandling capabilityVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The sensor serves multiple functions: detecting staples, providing feedback to the controller, and enabling the system to adapt to different document types. This multi-functionality allows the system to handle both bound and unbound documents with a single detection mechanism, improving versatility without proportionally increasing complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses its own sensor and controller to automatically detect and decide on the separation action, making the device self-regulating. This self-service capability allows the system to adapt to different document types autonomously, improving handling versatility while keeping the control architecture relatively simple

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11511957B2Medium conveyance device
Publication Date: 2022.11.29 PFU LTD
  • US11511957B2 patent drawing
  • US11511957B2 patent drawing
  • US11511957B2 patent drawing

AI summary

A medium conveyance device includes a first separator that separates a first medium from a plurality of mediums, a processor that processes the first medium and sends the processed first medium as a second medium, a second separator that when a non-separation mode is set, conveys the second medium to a next processor, and when a separation mode is set, conveys a third medium, which is separated from the second medium, to the next processor, and a controller that switches between the non-separation mode and the separation mode based on information obtained as a result of processing the first medium.