Division Management in Image Forming Devices
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Solution Overview
Problem
Image forming devices, such as digital multifunction machines, face challenges in managing user requests for image formation across multiple divisions, particularly in scenarios where division identification is not valid, leading to inefficiencies in tracking and limiting page counts.
Innovation Solution
The implementation of an image forming device with a dual operation mode system, including an identification unit to determine user divisions, a division management unit to track page counts, and a limiting management unit to manage page usage, allowing for image formation even when division identification is not valid, ensuring accurate and user-specific management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the division management function strictly requires division identification for all image forming operations, then measurement precision of page count per division is improved, but ease of operation deteriorates because users cannot perform operations when division identification is unavailable
Solution Approach 1:
The patent applies dynamics by making the division management system flexible rather than rigid. The control unit dynamically adjusts its behavior based on the validity of division identification: when division ID is valid, it enforces strict division-based management; when division ID is invalid, it automatically switches to a mode that allows image forming operations to proceed. This dynamic adaptation resolves the contradiction by making the system both precise when needed and operationally available when division identification is unavailable.
Solution Approach 2:
The patent changes the operational parameters of the division management function based on the validity of division identification. When division ID is invalid, the system changes parameters to allow image forming operations to proceed without strict division constraints, while still maintaining page count tracking capabilities. This parameter change enables the system to maintain measurement precision while improving ease of operation.
2Ease of operation
If the system allows image forming without division identification, then ease of operation is improved, but measurement precision of division-specific page counts deteriorates
Solution Approach 1:
The patent introduces an intermediary approach where the control unit acts as a mediator between the division management requirements and user operations. When division identification is invalid, the control unit intermediates by allowing operations to proceed while still maintaining the capability to track and manage page counts, thus preserving measurement precision without compromising ease of operation.
Solution Approach 2:
The system dynamically adjusts its measurement and management behavior based on division ID validity. When division ID is invalid, the system transitions to a mode that maintains operational availability while adapting the page count management approach to work without strict division constraints, thereby preserving both ease of operation and a form of measurement precision.
3Productivity
If the division management function enforces strict page limits for each division, then productivity control is improved, but adaptability deteriorates because the system cannot handle cases where division identification is not valid
Solution Approach 1:
The patent applies parameter changes by making the page limit enforcement flexible. When division identification is valid, the system enforces strict page limits per division for productivity control. When division identification is invalid, the system changes parameters to allow operations to proceed with adapted page management, thus maintaining both productivity control and adaptability.
Solution Approach 2:
The system dynamically adjusts its productivity control mechanism based on division ID validity. The control unit enables the image forming unit to operate even when division ID is invalid, while still maintaining page count tracking and management capabilities. This dynamic behavior allows the system to enforce productivity control when needed while adapting to maintain versatility when division identification is unavailable.
Data Source
AI summary
In a case where both a division management function which counts the number of pages printed for each division and a color management function which counts the only number of chromatically printed pages for each division are valid, an image forming device executes monochromatic printing even if a division to which a user belongs who has requested the printing is not determined, and executes color printing after the division to which the user belongs who has requested the printing is determined. Furthermore, the image forming device counts the number of monochromatically printed pages by a division undefined counter which is not associated with a specific division, and counts the number of chromatically printed pages by a division counter corresponding to the division to which the user belongs who has requested the printing.