Image Forming Apparatus Job-Specific Log Generation
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Solution Overview
Problem
In multifunction peripherals, when multiple jobs are executed simultaneously, a common log image is created for all jobs, even if they have different contents, making it difficult to match job products with their corresponding log images and thus challenging to identify information leak sources.
Innovation Solution
An image forming apparatus and control method that generate job history information, including a log image and log information, for each job executed, allowing for distinct log image generation based on job-specific conditions and enabling easy identification of information leak sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a common log image is created for multiple simultaneously executed jobs, then the processing efficiency is improved, but the ability to identify information leak sources deteriorates
Solution Approach 1:
The patent divides the common log image into separate job-specific log images for each simultaneously executed job. Each log image is associated with its corresponding job log, enabling individual tracking and identification of information leak sources while maintaining efficient processing through parallel generation.
2Device complexity
If a common log image is created for multiple jobs, then the device complexity is reduced, but the measurement precision of job-specific log information deteriorates
Solution Approach 1:
The system segments the log information into distinct job-specific log images, each with precise job identification information. This segmentation enables accurate measurement and tracking of each job's log information without requiring complex additional devices.
Solution Approach 2:
The patent creates separate log image copies for each job from the processed image data. Each copy is tagged with job-specific identification information, allowing precise measurement and tracking of each job's log information while using the same image processing resources.
3Loss of information
If job-specific log images are generated for each job, then the ability to specify information leak sources is improved, but the processing time increases
Solution Approach 1:
The patent performs preliminary actions by embedding job identification information into log images during the image processing stage itself, rather than adding it later. This preliminary tagging enables quick identification of information leak sources without requiring additional processing time after job completion.
Solution Approach 2:
The system merges the job identification information with the log image data in a single integrated structure. This combining of identification and log data eliminates the need for separate matching processes, reducing processing time while maintaining the ability to specify information leak sources accurately.
Data Source
AI summary
An information processing system includes a server and an image forming apparatus. The image forming apparatus includes an image forming unit, an image reading unit, and the like, and executes a job of copy, transmission or reception of an electronic mail, print, FAX transmission, or the like in accordance with an operation of a user. In the image forming apparatus, in a case where a plurality of jobs are simultaneously executed, history information that includes log information of each of the plurality of jobs and image data corresponding to an image handled by the job is generated.