Printing Amount Management for Decolorable Toner Sheets

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Solution Overview

Problem

There is a need to incentivize users to reuse decolorable toner sheets by managing and tracking printing amounts effectively, as existing systems lack a mechanism to reward users for reusing decolored sheets, which are valuable due to their potential for further printing.

Innovation Solution

A printing amount management apparatus and method that communicates with image processing and decoloring apparatuses to track and update user records for printing and decoloring operations, allowing the printing amount to be increased based on decoloring activities, while ensuring it does not exceed predetermined limits, and controlling printing functions accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the printing amount is increased based on the number of decolored sheets to incentivize reuse, then user motivation for sustainable practice is improved, but the risk of excessive printing and resource waste increases

Engineering Contradiction:
Improveuser motivation for sheet reuseVSAvoidpotential printing resource waste
Core Design Contradiction:
Ease of operationVSLoss of substance

Solution Approach 1:

The system implements feedback by monitoring the number of decolored sheets and automatically adjusting the printing amount accordingly. The management apparatus receives decoloring information from the decoloring apparatus, calculates the appropriate printing amount based on predetermined ratios, and updates the user's printing quota. This closed-loop feedback mechanism ensures that printing incentives are directly tied to actual decoloring activities, preventing excessive printing while maintaining user motivation for sustainable sheet reuse.

Inventive Principle:
Principle #23Feedback

2Reliability

If a management apparatus is introduced to track and manage printing amounts, then printing control and sustainability are improved, but system complexity increases

Engineering Contradiction:
Improveprinting amount controlVSAvoidsystem structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system is segmented into distinct functional modules: the image processing apparatus for printing, the decoloring apparatus for sheet regeneration, and the management apparatus for tracking and control. Each module performs a specific function and communicates through standardized interfaces. This segmentation allows the management apparatus to focus solely on tracking decoloring activities and managing printing quotas, simplifying its internal structure while maintaining effective overall control.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The management apparatus acts as an intermediary between the decoloring apparatus and the image processing apparatus. It receives decoloring information, calculates printing amounts based on predetermined rules, and transmits updated printing quotas to the printing apparatus. This intermediary role centralizes the control logic in a dedicated component, preventing the need for complex distributed control mechanisms across all devices.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Loss of substance

If the printing amount is capped at a predetermined maximum to prevent resource waste, then resource conservation is improved, but user flexibility and incentive value are reduced

Engineering Contradiction:
Improveprinting resource conservationVSAvoiduser printing flexibility
Core Design Contradiction:
Loss of substanceVSAdaptability or versatility

Solution Approach 1:

The printing amount quota is dynamic rather than static. It automatically increases based on the number of decolored sheets processed, allowing users to earn more printing capacity through sustainable practices. However, the system enforces a predetermined maximum cap to prevent excessive printing. This dynamic adjustment mechanism provides flexibility within controlled boundaries, balancing resource conservation with user incentive value.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3373074B1Printing amount management apparatus and method
Publication Date: 2019.10.16 KK TOSHIBA
  • EP3373074B1 patent drawingFigure 1
  • EP3373074B1 patent drawingFigure 2
  • EP3373074B1 patent drawingFigure 3

AI summary

A printing amount management apparatus according to an embodiment communicates with an image processing apparatus which prints an image on a sheet and a decoloring apparatus which decolors an image formed on the sheet with a decolorable toner. A storage unit stores, in correspondence with each of a plurality of user records, a printing amount that sets a maximum number of times of printing in the image processing apparatus in association with the corresponding user record. A processor receives, from the decoloring apparatus via the communication interface, a number of sheets decolored by the decoloring apparatus according to an operation of a user corresponding to one of the plurality of user record. The processor increases, based on the received number of decolored sheets, the printing amount stored in the storage unit in correspondence with the one of the plurality of user record.