Print Unit Management for Document Processing Devices
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Solution Overview
Problem
Organizations using multiple document processing devices face challenges in financing and tracking printer utilization, as existing methods do not efficiently manage usage or allow pay-per-use options, leading to difficulties in attributing costs to users based on actual usage.
Innovation Solution
A document processing device with a programmable computer that stores and manages 'print units' based on usage, allowing operations only when authorized by a customer account, with different operations (like color vs. monochrome printing) consuming varying amounts of print units, and enabling reduced functionality when units are depleted, while an external management system handles account management and consumable tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If organizations pay upfront for equipment and consumables, then device availability is ensured, but cost attribution to actual usage becomes difficult
Solution Approach 1:
The patent segments the consumable resource into discrete, trackable units (print units) that can be individually allocated and accounted for. Each print unit represents a segment of the consumable resource that can be tracked through the management system, enabling precise cost attribution while maintaining device availability.
Solution Approach 2:
The system implements feedback mechanisms where the management system continuously monitors print unit consumption, tracks usage patterns, and provides real-time information about remaining units and cost attribution. This feedback loop enables organizations to see actual usage data while ensuring devices operate with sufficient resources.
2Loss of information
If pay-per-use options are implemented, then cost attribution to usage is improved, but device complexity increases
Solution Approach 1:
The patent introduces a management system as an intermediary between the document processing device and the organization's billing/accounting systems. This intermediary handles the complex tracking, monitoring, and accounting of print units, allowing the device itself to remain relatively simple while still enabling sophisticated pay-per-use cost attribution.
Solution Approach 2:
The document processing device performs self-service functions by automatically monitoring its own consumable levels, tracking print unit consumption, and communicating usage data to the management system without requiring complex external intervention. This reduces the operational complexity burden on the organization while maintaining accurate cost attribution.
3Reliability
If print units are depleted, then device functionality should be restricted, but user convenience is reduced
Solution Approach 1:
The system dynamically adjusts device functionality based on remaining print unit balances. As units are depleted, the system can progressively restrict certain functions (such as color printing or high-resolution modes) while maintaining basic operations. This dynamic adaptation provides cost control through functional restriction while preserving maximum usability until absolutely necessary.
Solution Approach 2:
The management system provides advance notifications and warnings to users before print units are completely depleted, allowing users to plan ahead and recharge or replace consumables proactively. This preliminary action prevents sudden functionality loss and maintains user convenience by giving advance notice of upcoming restrictions.
Data Source
AI summary
Document processing devices and methods are presented, in which the device stores a remaining print unit value in its memory that represents the amount of print units currently available to enable the device to perform the document processing operations, and a programmable computer of the device selectively performs document processing jobs for users and decrements the remaining print unit value until the value reaches zero and the device provides for expenditure of print units according to color content and/or coverage levels determined for a given job.