Description

✅ Density Detection Sensor / Knot Sensor Assembly

Part Numbers:

• RM2-5874 – Main Paper Density / Knot Sensor

• RK2-6381, RK2-6396, RC4-3728 – Associated with paper feed sensing modules

• RM2-7396 / RM2-7397 – Typically related to duplex and advanced sensing functions

️ Compatible HP Printer Models:

HP Color LaserJet Pro Series:

• M150 / M154 / M180 / M181 / M252 / M253 / M254 / M255

• M274 / M277 / M280 / M281 

• M281fdw / M281cdw / M281

Canon i-SENSYS / ImageCLASS Series:

• Canon LBP Series: LBP612 / LBP653 / LBP654 / LBP654Cdw / LBP611Cn /LBP613Cdw / LBP622Cdw

  ️ Canon LBP Series:

  •  LBP611 / LBP612 /  LBP613 / LBP622

Primary Functions:

• Detects paper thickness/density

• Ensures correct media type identification

• Supports duplex and media registration

• Helps prevent paper misfeed and skewing

• Improves print accuracy by aligning print data to media quality

Additional Notes:

• This sensor is critical for consistent print quality and jam-free performance.

• Recommended replacement if printer reports frequent paper mismatch, skew errors, or media detection faults.