Toshiba D5070 Black Developer Unit – 6LK28272000 for e-STUDIO 257/307/357/457/2508A/3008A/3508A/4508A

Black Developer Station for e-STUDIO Mono Copiers

The Toshiba D5070 developer is the black developing unit for the e-STUDIO mono range. It carries part number 6LK28272000 and ships as a complete assembly charged with black developer material. The unit restores image density when the original station reaches its rated life.

The developer station mixes toner with carrier and presents the image to the drum. Wear on the sleeve, doctor blade and seals degrades fill and background density over time. Replacing the complete assembly at the service interval returns the black channel to specification without a partial rebuild. The rated yield reaches approximately 80,000 pages at 5% coverage.

Fitment covers the e-STUDIO 257, 307, 357, 457 and 507. Toshiba also lists the part against the 2508A, 2518A, 3008A, 3018A, 3508A, 3518A, 4508A, 4518A, 5008A and 5018A. Confirm the model plate before ordering because developer assemblies differ across the range. Technicians remove the process unit, release the black developer assembly and seat the replacement on its mount.

The copier accepts the unit without a firmware change or calibration routine. Run a test chart and check density and background before returning the machine to service. Keep the assembly sealed until installation to protect the developer material from humidity.

Key Features

• Complete Black Developer Assembly
  The kit replaces the full developing unit rather than the powder alone.

• Pre-Charged Black Developer
  The assembly arrives with black developer material loaded for immediate installation.

• Scheduled PM Part

  • Fits the black developer station service interval
  • Restores fill and background density together
  • Avoids leaving worn seals and blades in place

• Broad Model Coverage
  The part serves the 257 through 507 range and the 2508A to 5018A series.

• No Calibration Step
  The copier accepts the replacement unit without a firmware or setup routine.

Specifications

What’s in the Box

• 6LK28272000 black developer unit (D5070)

Why Choose This Developer Unit

• The full assembly restores black fill and background density to factory specification.

• Replacing the whole unit avoids partial rebuilds that leave worn seals in place.

• One part number covers several e-STUDIO mono models in a mixed fleet.

• The pre-charged unit cuts bench time during scheduled service.

• Toshiba lists the part as the periodic maintenance item for the black developer station.

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