Image Forming Apparatus Mode Segmentation for Charging Accuracy
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Solution Overview
Problem
Conventional image forming apparatuses lack the ability to distinguish between prints made by users and service engineers, leading to potential misuse where users may pretend to be service engineers and print without being charged.
Innovation Solution
The apparatus operates in two modes: a normal mode for users and a service engineer mode, with the latter having sub-modes for maintenance and check-print, where a specific pattern is superimposed on prints in the check-print mode to differentiate them from user prints, preventing unauthorized charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the image forming apparatus uses a single operation mode without distinction, then the ease of operation is improved, but the reliability deteriorates due to inability to prevent unauthorized charging
Solution Approach 1:
The operation modes are segmented into first operation mode (user mode) and second operation mode (service engineer mode), allowing the system to distinguish between different users and apply different charging rules. This segmentation resolves the contradiction by maintaining operational simplicity through mode switching while ensuring charging accuracy through mode-based differentiation.
Solution Approach 2:
The system dynamically switches between different operation modes based on authentication and context. The control unit determines which mode to activate, enabling the apparatus to adapt its behavior (charging or non-charging) based on the current operational context, thus maintaining both ease of operation and reliability.
2Reliability
If the apparatus distinguishes between user prints and service engineer prints through multiple operation modes, then the reliability of charging records is improved, but the device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it manages operation modes, determines charging status, and controls the charging counter. By making the control unit multi-functional, the system achieves reliable charging records without adding separate dedicated components for each function, thus limiting the increase in device complexity.
Solution Approach 2:
The system changes operational parameters (operation mode status) to differentiate between user and service engineer operations. By using parameter changes rather than physical hardware modifications, the system maintains reliability of charging records while minimizing device complexity.
3Productivity
If the charging counter is updated for all prints, then the productivity of charging management is improved, but the loss of information increases due to inability to distinguish charged vs. non-charged prints
Solution Approach 1:
The charging counter update operation is applied locally based on the operation mode. In the first operation mode, the counter is updated; in the second operation mode, it is not updated. This local application of the charging function ensures productivity in charging management while preserving information about whether a print was charged or not, based on the mode in which it was performed.
Data Source
AI summary
An image forming apparatus makes printing performed for maintenance by a service engineer charge-free, and prevents a print method for the service engineer from being used by a user. The image forming apparatus includes an input unit configured to input an image, a print unit configured to print the image input by the input unit, and a control unit configured to control the image input by the input unit to be output to the print unit and update a charging counter when the image forming apparatus operates in a first operation mode, and configured to control a specific pattern image to be superimposed on the image input by the input unit and the image with the superimposed specific pattern image to be output to the print unit without updating the charging counter when the image forming apparatus operates in a second operation mode.