Recording Medium Cutting Apparatus Preventing Width Displacement

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Solution Overview

Problem

In recording medium processing apparatuses, the recording medium may be displaced in the width direction due to the force from the cutting member and the pull of the second conveyance unit, leading to inaccuracies in processing.

Innovation Solution

A recording medium processing apparatus is designed with a first conveyance unit that conveys the recording medium, a cutting member that cuts the medium along the conveying direction, a second conveyance unit located upstream, and a preventing or avoiding unit that prevents the portion overlapped with the cutting member from being pulled by the second conveyance unit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the second conveyance unit pulls the recording medium during cutting, then conveyance efficiency is improved, but the recording medium is displaced in the width direction causing processing inaccuracy

Engineering Contradiction:

Improveconveyance efficiencyVSAvoidprocessing accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The conveyance units are divided into multiple independent units (first conveyance unit, second conveyance unit, third conveyance unit) that can be controlled separately. This segmentation allows the second conveyance unit to be stopped during cutting while other units continue operation, resolving the conflict between maintaining conveyance efficiency and preventing displacement during cutting operations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The second conveyance unit operates periodically - conveying the recording medium before cutting, stopping during cutting to prevent displacement, then resuming after cutting. This periodic on-off operation pattern allows the system to maintain overall conveyance efficiency while ensuring processing accuracy during critical cutting phases.

Inventive Principle:

Principle #19Periodic action

2Stability of the object's composition

If the recording medium is allowed to be pulled by the second conveyance unit, then continuous conveyance is maintained, but the cut portion position varies due to width direction displacement

Engineering Contradiction:

Improveconveyance continuityVSAvoidcut portion position accuracy

Core Design Contradiction:

Stability of the object's compositionVSManufacturing precision

Solution Approach 1:

The second conveyance unit completes the conveyance action before the cutting operation begins, positioning the recording medium in advance. This preliminary conveyance ensures the medium is properly positioned and stable before cutting starts, preventing position variations during the cutting process while maintaining overall conveyance continuity.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system applies preliminary anti-action by stopping the second conveyance unit before cutting occurs, preventing the harmful pulling force that would cause width direction displacement. This preemptive stopping eliminates the risk of cut portion position variation while allowing conveyance to resume immediately after cutting.

Inventive Principle:

Principle #9Preliminary anti-action

3Speed

If multiple conveyance units operate simultaneously, then processing speed is improved, but control complexity increases leading to potential displacement issues

Engineering Contradiction:

Improveprocessing speedVSAvoidcontrol complexity

Core Design Contradiction:

SpeedVSDevice complexity

Solution Approach 1:

The control system dynamically adjusts the operation state of each conveyance unit based on the processing phase. During cutting, the second conveyance unit is stopped while first and third units continue; during non-cutting phases, multiple units operate simultaneously. This dynamic control enables high processing speed while managing complexity through context-dependent activation.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The control unit monitors the cutting operation state and provides feedback to adjust conveyance unit operations accordingly. When cutting is detected, feedback triggers the second conveyance unit to stop; when cutting completes, feedback resumes normal multi-unit operation. This feedback mechanism coordinates multiple units efficiently without excessive control complexity.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20250100828A1Recording medium processing apparatus, image forming system, and non-transitory computer readable medium

Publication Date: 2025.03.27 FUJIFILM BUSINESS INNOVATION CORP

AI summary

A recording medium processing apparatus includes: a first conveyance unit that conveys a recording medium; a cutting member that is provided alongside the first conveyance unit in a width direction of the conveyed recording medium and cuts the recording medium along a conveying direction of the recording medium; a second conveyance unit that is located upstream of the first conveyance unit in the conveying direction and conveys the recording medium having reached a predetermined conveyance route; and a preventing or avoiding unit that, in the recording medium which is conveyed by the first conveyance unit and whose upstream end in the conveying direction has not passed the predetermined conveyance route, prevents or avoids a portion overlapped with the cutting member in the conveying direction from being pulled by the second conveyance unit.