Liquid Supply Control for Consistent Sheet Bundle Binding

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Solution Overview

Problem

Existing medium processing apparatuses face challenges in efficiently applying and managing liquid for binding processes, such as crimping and stapling, without adequate control over liquid levels and supply, leading to inconsistent binding quality.

Innovation Solution

A medium processing apparatus equipped with a liquid applier, first and second liquid storage tanks, a liquid supplier, and a liquid detector, controlled by processing circuitry, to manage liquid application and supply based on remaining liquid levels, ensuring consistent binding quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If liquid is applied to a sheet-shaped medium for crimping, then binding force is obtained, but liquid level control is insufficient leading to inconsistent binding quality

Engineering Contradiction:
Improvebinding quality consistencyVSAvoidliquid level control
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

The patent implements a feedback control system where a liquid level detector continuously monitors the liquid level in the liquid storage, and the control unit adjusts the liquid supply operation based on the detected level. This feedback mechanism ensures consistent liquid application for crimping, directly resolving the contradiction between binding quality consistency and liquid level control reliability.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent changes the liquid supply parameters dynamically by adjusting the liquid supply stop level according to the remaining liquid amount in the liquid storage. When liquid remains, the stop level is set higher; when liquid is low, the stop level is lowered. This parameter adjustment ensures consistent liquid application quality while adapting to varying liquid levels.

Inventive Principle:
Principle #35Parameter changes

2Manufacturing precision

If liquid supply operation is executed without dynamic adjustment, then simple operation is maintained, but liquid application consistency deteriorates

Engineering Contradiction:
Improveliquid application consistencyVSAvoidliquid supply control system
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The control unit receives feedback from the liquid level detector and automatically adjusts the liquid supply operation accordingly. This feedback loop enables consistent liquid application without requiring complex manual intervention, as the system self-regulates based on detected liquid levels.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs self-service by automatically monitoring its own liquid level and adjusting the supply operation without external intervention. The control unit independently manages the liquid supply based on detector feedback, maintaining consistency while avoiding the need for complex external control mechanisms.

Inventive Principle:
Principle #25Self-service

3Quantity of substance

If liquid is continuously supplied to liquid storage, then liquid availability is ensured, but liquid waste increases

Engineering Contradiction:
Improveliquid availabilityVSAvoidliquid waste
Core Design Contradiction:
Quantity of substanceVSLoss of substance

Solution Approach 1:

The liquid supply operation is executed periodically rather than continuously. The control unit supplies liquid only when the level detector indicates that the liquid level has fallen below the supply threshold, and stops supply when the threshold is reached. This periodic action ensures liquid availability while preventing waste from continuous supply.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent dynamically changes the liquid supply parameters by adjusting the stop level based on remaining liquid amount. This ensures liquid is supplied only when needed and in the appropriate amount, maintaining availability while minimizing waste through optimized supply timing and quantity.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20250382151A1Medium processing apparatus and image forming system
Publication Date: 2025.12.18 RICOH CO LTD
  • US20250382151A1 patent drawing
  • US20250382151A1 patent drawing
  • US20250382151A1 patent drawing

AI summary

A medium processing apparatus includes a liquid applier to apply liquid to a part of a medium to perform liquid application, a post-processing device to perform desired processing on a bundle of media including the medium subjected to the liquid application, a first liquid storage to store the liquid for the liquid application, a second liquid storage to store the liquid supplied to the first liquid storage, a liquid supplier to supply the liquid from the second liquid storage to the first liquid storage, a liquid detector to detect a liquid level of the liquid in the first liquid storage, and processing circuitry to control operations of the post-processing device and the liquid supplier. The circuitry changes a liquid level at which liquid supply is stopped in a liquid supply operation executed by the liquid supplier, according to a remaining amount of the liquid in the first liquid storage.