Image Forming Apparatus Print Counting Accuracy
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Solution Overview
Problem
Conventional image forming apparatuses face challenges in accurately counting the number of prints, particularly in distinguishing between monochrome and color printing, which affects billing accuracy and operational efficiency.
Innovation Solution
The implementation of a monochrome counter and a color counter, along with a target-counter-setting unit and a print-number-reflection unit, that differentiate between achromatic and chromatic toner consumption to accurately reflect the number of prints in the printing process, using a print-number-counting program to manage and update these counters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single counter is used for all printing operations, then the device complexity is reduced, but the measurement precision of print counting deteriorates because it cannot distinguish between monochrome and color printing
Solution Approach 1:
The patent divides the single counter into two separate counters: a monochrome counter for counting monochrome prints and a color counter for counting color prints. This segmentation allows each counter to specialize in a specific printing type, thereby improving measurement precision while maintaining manageable device complexity through functional separation.
Solution Approach 2:
The patent assigns different counting functions to different counters based on the local requirement of each printing type. The monochrome counter is optimized for achromatic material consumption tracking, while the color counter is optimized for chromatic material consumption tracking. This local quality approach ensures each counter operates with high precision for its designated purpose.
2Ease of operation
If the system automatically distinguishes between monochrome and color printing, then the ease of operation is improved, but the device complexity increases due to additional control logic
Solution Approach 1:
The system automatically detects whether a print job is monochrome or color based on the toner consumption data, and self-manages the selection of the appropriate counter without requiring manual intervention. The control unit examines the print job characteristics and autonomously determines which counter to use, improving ease of operation while keeping the control logic relatively simple through rule-based automation.
3Reliability
If separate counters are maintained for monochrome and color printing, then the reliability of billing calculation is improved, but the loss of time for counter management increases
Solution Approach 1:
The system performs preliminary classification of print jobs into monochrome or color categories before the actual printing process begins. By determining the print type in advance and pre-selecting the appropriate counter, the system ensures reliable billing calculations from the outset and eliminates the need for time-consuming post-print analysis or manual counter selection.
Solution Approach 2:
The control unit continuously monitors toner consumption data and provides feedback to automatically update the appropriate counter. This real-time feedback mechanism ensures that billing calculations remain accurate and up-to-date without requiring manual intervention, thereby maintaining high reliability while minimizing the time lost to counter management through automated tracking.
Data Source
AI summary
Provided is an image forming apparatus capable of counting a number of prints with high accuracy and a recording medium. An MFP that includes a monochrome counter for monochrome printing and a color counter for color printing sets the monochrome counter as a target counter for reflecting the number of prints in a printing process when only monochrome toner of monochrome toner and color toner is consumed in the printing process. Moreover, the MFP sets the color counter as a target counter when color toner is consumed in a printing process. Then, the MFP reflects the number of prints in a printing process on the set target counter.