Image Forming Apparatus Interrupt Job Adjustment
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Solution Overview
Problem
Existing image forming apparatuses face challenges in maintaining consistent image quality during interrupt print jobs, as automatic adjustments are not updated, leading to potential deviations in image density and geometric characteristics, especially in double-sided printing.
Innovation Solution
The image forming apparatus includes a printing apparatus, an image reading unit, and a processor that creates a chart for adjustment before resuming an interrupt print job, allowing for real-time adjustment of image forming conditions based on read results, ensuring consistent image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automatic adjustment is disabled during interrupt print job, then processing efficiency is improved, but image quality stability deteriorates
Solution Approach 1:
The system performs preliminary action by creating a chart for adjustment and updating image forming conditions before the interrupt print job is executed. This ensures that when the original print job resumes, the image forming conditions are already updated based on the latest adjustment data, preventing quality deviations without requiring continuous adjustment processing during the interrupt job.
2Reliability
If automatic adjustment is enabled continuously, then image quality stability is improved, but processing time is increased
Solution Approach 1:
The system implements periodic action by updating image forming conditions at specific intervals - specifically before resuming the original print job after an interrupt. The chart for adjustment is created periodically at this transition point, ensuring image quality stability is maintained at critical moments without continuous adjustment processing that would consume excessive time.
3Manufacturing precision
If chart for adjustment is created before resuming print job, then image quality consistency is improved, but additional processing step is added
Solution Approach 1:
The system merges the chart creation and image forming condition update steps into a single integrated process that occurs automatically at the transition point before resuming the print job. This combination ensures image quality consistency is achieved without significantly increasing the number of separate processing steps, as the chart creation is seamlessly integrated into the job resumption workflow.
Data Source
AI summary
An image forming apparatus includes a printing apparatus and controls, when an interrupt print job to be processed by interrupting image formation based on a print job is requested, the printing apparatus to form an image corresponding to the interrupt print job by interrupting processing based on the print job. The printing apparatus is controlled to create a first predetermined number of charts for adjustment obtained by forming the image for adjustment on the sheet before the processing is returned to the print job after end of processing based on the interrupt print job, and adjust the image forming condition based on a result of reading the image for adjustment of the first predetermined number of charts for adjustment by the image sensor before the processing is returned to the print job.