Printer Cartridge Provisioning with Location-Aware Expiration Management

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Solution Overview

Problem

Existing systems fail to effectively manage ink or toner cartridges to prevent waste due to expiration dates, leading to potential quality issues and inefficiencies in inkjet recording devices.

Innovation Solution

A system and method for managing ink or toner cartridges through a centralized server that tracks inventory, expiration dates, and usage, ensuring timely replacement and redistribution of cartridges based on usage patterns and proximity to expiration, thereby optimizing inventory and reducing waste.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If ink substitution is performed based on expiration dates to reduce waste, then the amount of ink disposed of wastefully is reduced, but print quality deteriorates because the print is printed by a different color than the expected color

Engineering Contradiction:
Improveink wasteVSAvoidprint quality
Core Design Contradiction:
Loss of substanceVSManufacturing precision

Solution Approach 1:

The system performs preliminary actions by proactively managing ink inventory before expiration occurs. It predicts future ink requirements based on usage patterns and automatically orders replacement ink cartridges before the current ones expire, ensuring timely replacement without compromising print quality or causing waste.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements continuous feedback mechanisms by monitoring ink usage rates, cartridge expiration dates, and inventory levels in real-time. This feedback enables dynamic adjustment of ordering decisions and provides alerts to users about impending expirations, allowing for timely intervention to prevent both waste and quality issues.

Inventive Principle:
Principle #23Feedback

2Loss of substance

If ink substitution is performed to reduce waste, then ink waste is reduced, but the system complexity increases due to tracking and management requirements

Engineering Contradiction:
Improveink wasteVSAvoidsystem complexity
Core Design Contradiction:
Loss of substanceVSDevice complexity

Solution Approach 1:

The system enables self-service functionality by automatically tracking ink usage, calculating projected expiration dates, and initiating reordering processes without requiring manual intervention. The system serves itself by managing its own inventory optimization, reducing the need for complex manual tracking while minimizing waste.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system integrates multiple functions into a unified platform: it monitors ink levels, tracks usage patterns, predicts expiration dates, manages inventory across multiple cartridges, and coordinates with suppliers. This multi-functionality consolidates what would otherwise require separate complex systems into a single streamlined solution.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Productivity

If centralized inventory management is implemented to optimize redistribution, then resource utilization is optimized, but the device complexity increases due to centralized tracking requirements

Engineering Contradiction:
Improveresource utilizationVSAvoidcentralized tracking complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The system merges inventory data from multiple distributed sources into a single centralized database, enabling holistic optimization of resource allocation. By consolidating information about all ink cartridges across the network, the system can efficiently redistribute inventory to where it is most needed, maximizing resource utilization while managing complexity through unified data architecture.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4328828B1Provision system, provision method, and management device
Publication Date: 2025.09.10 SEIKO EPSON CORP
  • EP4328828B1 patent drawingFigure 1
  • EP4328828B1 patent drawingFigure 2
  • EP4328828B1 patent drawingFigure 3

AI summary

A cartridge provision system includes a printer that ejects liquid (recording material) supplied from a cartridge onto a print medium; and a server 10 that manages a provision of the cartridge to a user of the printer, wherein the server 10 manages vendor inventory data 22, which is data that associated an inventory of the cartridge held by a sales company who provisions the cartridge to the user with expiration date of the cartridge, and a location data 33, which indicates the location of the user, and determines, when the sales company provisions the cartridge to the user, which expiration date of the cartridge should be provided from the inventory of the cartridge held by the sales company based on the vendor inventory data 22 and the location data 33.