Roland Ink Damper for EJ640
Roland Ink Damper for EJ640
Roland Ink Damper for EJ640
Roland Ink Damper for EJ640
Roland Ink Damper for EJ640
Roland Ink Damper for EJ640
Roland Ink Damper for EJ640

Roland Ink Damper for EJ640

$21.88
$21.88
Subtotal: $21.88
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Roland Ink Damper for EJ640

Roland Ink Damper for EJ640

$21.88
Roland Ink Damper for EJ640
Roland Ink Damper for EJ640
Roland Ink Damper for EJ640
Roland Ink Damper for EJ640
Roland Ink Damper for EJ640
Roland Ink Damper for EJ640
Roland Ink Damper for EJ640

Roland Ink Damper for EJ640

$21.88
Description
Description
x

Roland Ink Damper — EJ-640

  • DX7-type ink damper for stable, bubble-free ink supply
  • Dual fine mesh filters reduce clogging and banding
  • Compatible with eco-solvent and solvent inks
  • Direct-fit replacement; easy to install
  • Improves nozzle stability and print consistency

The Roland EJ-640 Ink Damper stabilizes ink flow between the ink line and the printhead. Replacing old dampers restores consistent pressure, prevents micro-bubbles, and ensures smooth, high-quality printing.

Printer Compatibility

  • Roland EJ-640
  • Also fits: XF-640, XT-640, RA-640, RE-640, RF-640
  • VS-Series: VS-300 / VS-420 / VS-540 / VS-640 / VS-i models
Type DX7 Ink Damper (double-chamber)
Filter Dual fine mesh, integrated gasket
Ink Eco-solvent / Solvent
Condition New
Packing 1 pc (4 pcs set available)

Installation Tips

  • Check ink tubes and negative pressure system when replacing dampers.
  • Prime the system to remove air bubbles before printing.
  • Replace old O-rings and clamps together for better performance.
  • Run a nozzle test after installation to confirm stable ink flow.

Use Position & Function

  • The damper is normally installed between the ink supply path and the printhead to stabilize pressure and reduce bubbles.
  • It helps support smoother ink delivery and can also assist with filtering fine particles before ink reaches the printhead.
  • Damper performance has a direct effect on ink stability, especially on multi-channel or high-speed printers.

Compatibility Reference

  • Referenced machine models: EJ640, EJ-640, XF-640, XT-640, RA-640, RE-640, RF-640, VS-300, VS-420, VS-540, VS-640.
  • Referenced printheads: DX7.
  • Suitable for solvent use when the connector type, orientation, and sealing method match the reference damper.

When Buyers Replace This Part

  • Replace when ink flow becomes unstable, bubbles increase, colors drop out, or the damper body becomes contaminated or deformed.
  • Compare the manufacturer part number, connection layout, and mounting direction before ordering.
  • For best maintenance results, buyers often inspect cap tops, tubing, and ink filters at the same time.

Common Replacement Scenarios

  • Replace when colors intermittently drop out, bubbles appear repeatedly, or the printhead side shows unstable ink feeding.
  • Inspect this part when the damper body becomes stained, swollen, cracked, or no longer seals reliably.
  • On printers with multiple channels, one weak damper can affect daily color consistency even if the printhead is still usable.

Fitment Checklist

  • Referenced machine models: EJ640, EJ-640, XF-640, XT-640, RA-640, RE-640, RF-640, VS-300, VS-420, VS-540, VS-640.
  • Referenced printheads: DX7.
  • Check joint style, filter structure, connector direction, sealing method, and manufacturer reference before final purchase.

Service Pairing Suggestions

  • Many buyers inspect cap tops, ink tubes, pumps, and filters at the same time when damper problems appear.
  • Use this damper only when the solvent ink path, connector style, and physical size match the reference assembly.
  • Professional installation is recommended when the printer uses a sealed manifold or tightly packed multi-channel head carriage.
Shipping & Return
Shipping & Return
x

Returns Policy

Please confirm product model, specifications, and compatibility before ordering. Buyer-side compatibility mistakes are generally not eligible for return, refund, or compensation.

Printheads, inks, cleaning liquids, electronic boards, and opened or installed items are non-returnable and non-refundable unless we shipped the wrong item or the goods arrived damaged.

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

Shipping time, stock availability, duties, and import charges may vary by product and destination. Some orders require manual confirmation before shipment.

Estimated delivery time is for reference only and is not a guaranteed delivery date.

If you need an urgent shipment or compatibility check, please contact us before purchase.

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