Document Transport Assistance Member Posture Stabilization

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Solution Overview

Problem

The existing document transport assistance members in image processing devices face challenges with varying document postures due to transport roller configurations, leading to inconsistent separation states and reduced reading accuracy.

Innovation Solution

A document transport assistance member is designed with a cover sheet and a support sheet bonded together, featuring a first bonding part that extends beyond the reading position and nipping point, ensuring stable document alignment and posture during transport, thus maintaining consistent reading accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the document transport assistance member is fed into the image processing device, then the document can be transported through the device, but the posture of the document transport assistance member varies under the influence of the transport roller configuration, causing inconsistent separation states between the reading part and the document

Engineering Contradiction:
Improvedocument transportVSAvoidreading accuracy
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The patent applies preliminary action by designing the bonding part to be positioned at a specific location that anticipates and prevents posture variation before the document reaches the reading part. The bonding part is configured to maintain document posture during transport, ensuring consistent separation state between the reading part and document surface, thereby preserving reading accuracy throughout the transport process.

Inventive Principle:
Principle #10Preliminary action

2Stability of the object's composition

If a bonding part is added to bond the cover sheet and support sheet, then the document posture can be stabilized, but the device complexity increases

Engineering Contradiction:
Improvedocument posture stabilityVSAvoidstructure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent applies local quality by implementing a bonding part with specific localized properties at a strategically positioned location. Rather than uniformly bonding the entire cover sheet and support sheet, the bonding part is concentrated at a specific region that provides maximum posture stabilization benefit while minimizing the added structural complexity. This localized approach maintains document stability without unnecessarily increasing device complexity.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS10944881B2Document transport assistance member and image processing device
Publication Date: 2021.03.09 SEIKO EPSON CORP
  • US10944881B2 patent drawing
  • US10944881B2 patent drawing
  • US10944881B2 patent drawing

AI summary

A document transport assistance member for an image processing device including a transport roller and a reading part provided upstream of the transport roller in a transport path, the document transport assistance member including a cover sheet, a support sheet, and a bonding part that serves as a bonding part where the cover sheet and the support sheet are bonded together, and bonds a first end portion at a first direction side along a first axis, wherein a length between a side end of the document transport assistance member at the first direction side and a rear end of the bonding part at the opposite side from the first direction is greater than a length between a reading position where the reading part can read the document and a position of a nipping part where the transport roller performs nip on the document transport assistance member in the transport path.