Job Conditions
Overview
Changes to the job conditions impact upon the condition of the system, and can lead to issues during printing.
In order to prevent issues such as image defects, it is necessary to take the appropriate measures according to the job conditions.
This section introduces a range of helpful tips for everyday use, using 3 characteristic job conditions as examples.
Consecutive Printing of Jobs With Different Levels of Coverage
If printing a job with high coverage immediately after printing a high volume of jobs with low coverage, you may find white spots appearing on the image due to image distortion or a build up of toner.
Use "Toner Refresh" to prevent issues caused by coverage fluctuations.
What is Coverage?
Coverage is the ratio of toner used for a single A4 sheet of paper.
The higher the number of color photographs or illustrations, the higher the coverage. The greater the amount of single color (monochrome) text, the lower the coverage.
Example: When an A4 sized sheet is filled in with black toner, the black toner coverage is 100%.
-What is Toner Refresh?
1 reason that issues may occur as a result of coverage fluctuations is toner left in the developer for extended periods or high numbers of prints being made without use of much toner. The longer the toner is left in the developer, the more the toner degrades, resulting in distortions to the image.
Be sure to perform "Toner Refresh" before commencing the job. Take out any old toner and fill the developer with new toner to help stabilize image quality. For details, refer to [Execute Adjust Operation].
When Printing Large Volumes or Important Jobs
Use the "Auto Image Adjustment" function if Intelligent Quality Optimizer IQ-501 is mounted to the system.
What is the "Auto Image Adjustment" Function?
Auto Image Adjustment is a function that automatically prints adjustment crop marks and gradation patches in the trim margin of the printed item, which are then scanned and corrected by the sensor on Intelligent Quality Optimizer IQ-501.
Corrects the image position and any gradation misalignment in real time, improving image stability during printing. For details about the operation method, refer to Auto Image Adjustment.
When printing in large volumes, or when printing jobs in which color is important, adjust the "image position" and "image quality" after performing Toner Refresh. Doing this helps stabilize the image quality of the printed item. For details about Toner Refresh, refer to [Execute Adjust Operation].
Step 1
Adjust the image position
Perform both-side adjustment when you want to ensure stable accuracy on both sides or immediately before outputting a job where both-side accuracy is important. For details about the operation method, refer to Adjustment Workflow for Each Job.
Step 2
Adjust the image quality
Adjust the image quality just before printing jobs in which color is important. For details about the operation method, refer to Daily Adjustment Flow (High Precision).
When Reprinting Previously Printed Jobs
To print previously printed jobs with the same finish as the original print, you can improve reproducibility by creating and using "image position" and "image quality" adjustment values set as reference values previously.
The 3 operations that must be performed are listed below.
- Create image position and image quality adjustment values
- Register these adjustment values as reference values and use them accordingly
- Perform calibration to improve image quality reproducibility
Step 1
Register the adjustment values to be used as reference values for printed items on the system
Adjust the "image position" and "image quality" before outputting the job, and register the results of that adjustment as reference values on the system. Registering these values allows them to be used as reference values when making a reprint of the job.
- Image position: Adjustment Flow for When Using New Types of Paper
- Image quality:
Performing automatically: [Each Paper Type Color Adj.] (With Intelligent Quality Optimizer IQ-501)
Performing manually: [Each Paper Type Color Adj.] (With MYIRO-1)
Step 2
Use the reference adjustment values when reprinting
Configure the feed tray with the reference adjustment value settings when reprinting a previously printed job with the same finish.
- Image quality: [Each Paper Type Color Adj.Data]
Step 3
Perform calibration
Perform calibration in order to improve image reproducibility.
- Image quality:
Performing automatically: [Basic Setting]
Performing manually: [Color Density Manual Control]
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and is registered as a bookmark.