Post-processing Device Covering Member Synchronization

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Solution Overview

Problem

Conventional post-processing devices for recording media after image forming processes lack efficient mechanisms for aligning and processing the media, particularly in covering and uncovering openings during the processing stages, which can lead to inefficiencies and noise leakage.

Innovation Solution

A post-processing device with a moving outputting unit and a covering member that reciprocates between covering and uncovering positions, synchronized with the processing mechanism, to ensure efficient media alignment and noise containment during binding and output processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the opening is kept uncovered to allow recording media to pass through, then media output efficiency is improved, but noise from the processing mechanism leaks to the outside

Engineering Contradiction:
Improvemedia output efficiencyVSAvoidnoise leakage
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The covering member is positioned in advance to cover the opening during the binding process, and is moved to uncover the opening only after the binding is completed. This preliminary positioning of the covering member ensures that noise is contained during processing while media output remains efficient when the opening is uncovered.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The covering member is designed to move dynamically between covering and uncovering positions based on the processing state. It covers the opening during binding operations to contain noise, and uncovers the opening during media output to maintain efficiency. This dynamic adjustment resolves the contradiction between noise containment and output efficiency.

Inventive Principle:
Principle #15Dynamics

2Object-generated harmful factors

If the covering member covers the opening during processing, then noise leakage is prevented, but media output is blocked

Engineering Contradiction:
Improvenoise containmentVSAvoidmedia output efficiency
Core Design Contradiction:
Object-generated harmful factorsVSProductivity

Solution Approach 1:

The covering member operates periodically, covering the opening during binding operations and uncovering it during media output operations. This periodic switching between covering and uncovering states ensures that noise is contained during processing while media can be output efficiently when the opening is uncovered, without continuous blockage.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The covering member transitions dynamically between covering and uncovering positions synchronized with the processing mechanism. It covers the opening only when the processing mechanism is actively binding media, and uncovers it when media needs to be output, thus preventing noise leakage without continuously blocking media output.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If the moving member contacts the recording medium for output, then media output control is improved, but the mechanism complexity increases

Engineering Contradiction:
Improvemedia output controlVSAvoidoutputting unit complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The moving member is designed to automatically contact the recording medium at the appropriate timing based on the processing state, without requiring complex external control mechanisms. The moving member moves to contact the medium when the covering member uncovers the opening, and withdraws when the opening is covered, providing self-service media output control that simplifies the overall system.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS8712316B2Post-processing device and image forming system
Publication Date: 2014.04.29 FUJIFILM BUSINESS INNOVATION CORP
  • US8712316B2 patent drawing
  • US8712316B2 patent drawing
  • US8712316B2 patent drawing

AI summary

A post-processing device includes: a casing having an opening; a processing mechanism performing a process on a recording medium; an outputting unit including a contacting member contacting the recording medium and a moving member moving between a contact position to contact the recording medium and a non-contact position not to contact the recording medium and coming close to the contacting member when moving to the contact position, the outputting unit outputting the recording medium via the opening when the moving member is in the contact position; and a covering member moving between a covering position to cover the opening and an un-covering position to uncover the opening to pass the recording medium. When the processing mechanism performs the process, the covering member moves to the covering position, and after the process is performed, the covering member moves to the un-covering position while the moving member moves to the contact position.