Troubleshooting

4-2-3 Horizontal Black Band

• Description

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

1.Dark or blurry horizontal stripes occur in the printing periodically. (They may not occur periodically.)

Check and Cause

 

Solution

 

 

 

1. Bad contacts of the voltage terminals to

1.

Clean each voltage terminal of the Charge,

developer.

 

 

Supply, Develop and Transfer roller.

 

 

 

(remove the toner particles and paper par-

 

 

 

ticles)

2. The rollers of developer may be stained.

2.

Clean the right Gear that has relatively

Charge roller

= 37 mm

 

small gap of the teeth in the OPC.

Supply roller

= 27 mm

 

 

Develop roller = 32 mm

 

 

Transfer roller

= 47 mm

 

 

 

 

3.

If the malfunction persists, replace the

 

 

 

developer.

 

 

 

 

4-2-4 Black/White Spot

• Description

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

1.Dark or blurry black spots occur periodically in the printing.

2.White spots occur periodically in the printing.

Check and Cause

Solution

 

 

1. If dark or blurry black spots occur periodi-

1. Run OPC cleaning Mode Print and run the

cally, the rollers in the Developer may be

Self-test 2 or 3 times.

contaminated with foreign matte or paper

 

particles.

 

( Charge roller : 37 mm interval

 

OPC drum : 75mm interval)

 

2. If faded areas or voids occur in a black

2. In case of 75mm interval unremovable in 1,

image at intervals of 75 mm, or black

cleanly remove foreign substances stuck on

spots occur elsewhere, the OPC drum

the OPC location equivalent to black spots

surface is damaged.

and white spots with a dry duster.

3. If a black image is partially broken, the

3. The transfer roller guarantees 50,000

transfer voltage is abnormal or the trans-

sheets printing. If the roller's life is expired,

fer roller's life has expired.

replace it.

 

4. In case of 37mm interval unremovable in 1,

 

take measures as to replace the developer

 

cartridge and try to print out.

 

5. Clean the inside of the set against the paper

 

particles and foreign matter in order not to

 

cause the trouble.

 

 

4-6

Samsung Electronics

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Samsung ML-1210, ML-1200 specifications Horizontal Black Band, Black/White Spot
Page 18 Page 20

ML-1200, ML-1210 specifications

The Samsung ML-1200 is a noteworthy monochrome laser printer designed to deliver impressively sharp and high-quality printouts, making it a popular choice for both home and small office environments. While it boasts a compact design, the ML-1200 does not compromise on performance, offering a variety of features that enhance productivity and ease of use.

One of the most defining characteristics of the ML-1200 is its print speed. Capable of producing up to 12 pages per minute (ppm), it ensures that users can handle their printing tasks quickly and efficiently. The first page out time is a mere 8.5 seconds, allowing users to receive their documents promptly without unnecessary delays.

Resolution is another critical factor in print quality, and the ML-1200 does not disappoint. With a printing resolution of up to 1200 x 1200 dots per inch (dpi), this printer provides crisp text and detailed graphics, making it suitable for various documents ranging from simple text files to more intricate reports and presentations.

Equipped with Samsung's unique ReCP (Rendering Engine for Clean Page) technology, the ML-1200 enhances the clarity of printed text and images. This technology works by improving edge detail and overall print quality, minimizing the chances of blurry or unclear outputs, which is a common issue with lower-tier models.

In terms of connectivity, the Samsung ML-1200 features standard USB 2.0 support, allowing users to connect the printer directly to their computer seamlessly. While it may lack wireless capabilities, this direct connection provides a stable and reliable interface for personal use.

The device offers a standard paper tray capacity of 150 sheets, along with a one-sheet manual feed slot, catering to different media types. The printer supports various paper sizes, including A4, Letter, and Legal, further enhancing its versatility for various printing tasks.

In conclusion, the Samsung ML-1200 is a robust monochrome laser printer that offers a combination of speed, print quality, and usability, making it an ideal choice for individuals and small businesses looking for a reliable printing solution. Its compact size and efficient technologies ensure that it can easily fit into any workspace while delivering outstanding results consistently.
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