HP color laserjet 4500 사용자 설명서

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170 Chapter 9 Image quality
 EN
Image defect details 
The media does not meet HP specifications.
The toner cartridge is defective.
The inside of the printer is dirty.
The transfer roller is dirty or worn. Generate a cleaning page.
Banding occurs when solid fill areas show streaks or bands of shade 
variations. This can be caused by:
Worn, damaged, or contaminated gears
Consumables that are beyond their rated life
Improper consumable storage
If the problem persists:
Print a configuration page to check the life of the consumables. 
Replace any consumable that is past its rated life.
Banding is more visible in some halftone patterns than in others. 
Print a page using a halftone pattern such as “banddiag” provided in 
the Color Smart selection in the printer driver. If the defect occurs 
only once on a letter-size sheet, try printing the pattern on a legal-
size sheet.
Background scatter
   
Banding and horizontal lines