Canon imageCLASS MF4450
Troubleshooting. Image. Smudged/Streaked
Bleeding (smear) occurs immediately after the power is turned on for the first time for the day
Description
There is sometimes a case where the difference of temperature between air and inside of the machine causes moisture to occur on the toner immediately after the power is turned on for the first time for the day.
As a result, when the toner transferred on a sheet at the time of initial printing passes through the fixing assembly, moisture on the toner is vaporized into steam, causing breading (smear) to occur.
Field Remedy
Prevent bleeding using the following user mode items.
| Setting items | Setting value | Description | Additional information |
|---|---|---|---|
| Adjustment/ Maintenance > Special Processing > Special Mode Z |
Not used,Mode 1 through 4 (Factory setting: Mode 2) |
Make a setting to perform thinning of printed image data by processing of the controller. When the value set for the mode increases, the amount of thinning increases. (The image density decreases.) | Printing time does not increase because the method of image processing performed by the controller is changed. This mode is less effective than Mode B. |
| Adjustment/ Maintenance > Special Processing > Special Mode B |
Not used,Mode 1 through 3 (Factory setting: Not used) |
Extend the initial rotation period by processing of the engine. When the value set for the mode increases, the initial rotation period is extended. |
The initial rotation period in engine operation is extended, and printing time increases. The initial rotation period for each mode is shown below. Mode 1: 13 sec, Mode 2: 30 sec, Mode 3: 60 sec |