Recording Apparatus Collision Detection for Foreign Matter

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Solution Overview

Problem

Existing flatbed recording apparatuses risk damage from foreign matter colliding with projecting sections during movement, which can also damage the recording medium and the apparatus itself.

Innovation Solution

Incorporating collision detection sections on both sides of the projecting sections and overlapped areas to quickly stop the moving mechanism when collisions are detected, using a combination of contact-type and optical-type detection systems to prevent damage and facilitate adjustment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the Y-axis unit includes projecting sections that extend over the stage section, then the recording unit can cross over the stage effectively, but foreign matter may collide with the projecting sections causing damage

Engineering Contradiction:
Improverecording unit movementVSAvoidforeign matter collision damage
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The collision detection sections are arranged in advance on both sides of the projecting sections to detect foreign matter before it causes damage. This preliminary detection allows the system to stop the moving section before the foreign matter can collide with and damage the recording unit or stage section.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The collision detection sections provide real-time feedback about the presence of foreign matter to the control mechanism. When collision is detected, the control mechanism immediately stops the moving section, creating a feedback loop that prevents damage while maintaining operational capability.

Inventive Principle:
Principle #23Feedback

2Reliability

If collision detection sections are arranged on both sides of projecting sections, then collision detection capability is improved, but device complexity increases

Engineering Contradiction:
Improvecollision detection accuracyVSAvoiddetection system structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The collision detection system is segmented into multiple independent detection sections positioned at different locations (both sides of the projecting sections). Each detection section independently monitors its specific area, allowing the system to achieve comprehensive coverage through simple, modular components rather than a single complex detection system.

Inventive Principle:
Principle #1Segmentation

3Object-affected harmful factors

If the moving section is stopped quickly upon collision detection, then damage prevention is improved, but loss of operational time increases

Engineering Contradiction:
Improvedamage preventionVSAvoidmovement interruption
Core Design Contradiction:
Object-affected harmful factorsVSLoss of time

Solution Approach 1:

The immediate stop response creates a rapid feedback loop where collision detection directly triggers movement cessation. This minimizes the time between detection and protection action, preventing damage while the brief interruption is acceptable given the rarity of foreign matter collisions compared to the cost of damage repair.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS9022518B2Recording apparatus
Publication Date: 2015.05.05 SEIKO EPSON CORP
  • US9022518B2 patent drawing
  • US9022518B2 patent drawing
  • US9022518B2 patent drawing

AI summary

There is provided a recording apparatus including a support stage which supports a recording medium, a recording processing section which includes a recording unit for performing recording on the supported recording medium and is bridged so as to cross over the support stage in an X-axis direction, a Y-axis moving section which moves the recording processing section in a Y-axis direction with respect to the support stage, and a collision detection section which detects collision between a foreign matter and the recording processing section, in which the recording processing section includes projecting sections projecting in the X-axis direction with respect to the support stage, and side collision detection sections are respectively arranged on front and rear sides of the respective projecting sections.