Roland Xc-540 Assy, Captop - 1000004546 / 1000002794

The Roland XC-540 Assy Cap Top (part number 1000004546, replacing earlier part 1000002794) is the genuine original Roland foam capping station assembly for the DX4-based Roland SOLJET, VersaCAMM, VersaUV, and VersaArt printer range — covering the SJ, SP, VP, XC, XJ, FJ, SC, RS, CJ, LEC, LEJ, and LEF series. This complete assembly includes the foam cap body, felt pad, and ink tube — not just the rubber cap alone. It seals the DX4 printhead during idle and overnight shutdowns, preventing eco-solvent ink from drying in the nozzle array, and serves as the inlet for the printer's purge and cleaning cycles. Every 1000004546 we stock at Digiprint USA is 100% genuine original Roland — not aftermarket, not compatible.

Product Details

Specification	Detail
Roland Part Number	1000004546 (supersedes 1000002794)
Assembly contents	Foam cap body + felt pad + ink tube (complete assembly)
Compatible printhead	Epson DX4 (Roland part 6000005213 / 6000005180)
Ink compatibility	Eco-solvent and water-based (solvent-resistant foam)
Dimensions	220mm × 33mm × 17mm
Weight	15g
Function	Seals DX4 printhead during idle — prevents nozzle drying; cleaning cycle inlet
Replacement interval	Replace at every printhead installation; replace immediately if cap seal is degraded
Condition	100% genuine original Roland, brand new

Compatible Printers

Roland SolJet Pro II / Pro III

• SJ-540 / SJ-640 / SJ-645ex / SJ-740 / SJ-745ex / SJ-1000 / SJ-1045ex

• SC-540 / SC-545ex

• XC-540 / XC-540MT / XC-540W

• XJ-540 / XJ-640 / XJ-740

Roland VersaCAMM SP / VP Series

• SP-300 / SP-300i / SP-300v / SP-540 / SP-540i / SP-540v

• VP-300 / VP-300i / VP-540 / VP-540i

Roland Hi-Fi Jet / ColorCAMM / VersaArt / FP Series

• FJ-540 / FJ-640 / FJ-740

• FP-740

• CJ-540

• RS-540 / RS-640

Roland VersaUV / LEF / LEC / LEJ Series

• LEC-300 / LEC-300a / LEC-330 / LEC-540

• LEJ-540 / LEJ-640

• LEF-12 / LEF-12i / LEF-20 / LEF-200 / LEF-300

All printers listed above use the Epson DX4 printhead and the same 1000004546 cap top assembly. Contact us to confirm compatibility with your specific model if not listed above.

DX4 vs DX5/DX6 Cap Top — Different Parts for Different Generations

Roland's DX4 and DX5/DX6 printer generations use different capping station assemblies. Do not substitute:

Generation	Part Number	Printers
DX4 — this listing	1000004546 / 1000002794	XC-540, SP/VP/SJ/FJ/SC/RS/XJ/LEC/LEJ/LEF series
DX5/DX6 — VS/RE/RA generation	6000007135 (current) / 6701409200 (discontinued)	VS-300/420/540/640, RE-640, RA-640, RF-640, XF-640, BN-20, RT-640

What Does the Cap Top Do — and Why the Felt and Ink Tube Matter

The cap top assembly seals against the DX4 nozzle face when the printhead parks in the capping position between jobs and overnight. The foam body creates the primary seal; the felt pad absorbs excess ink purged during cleaning cycles, preventing pooling on the nozzle face; and the ink tube carries waste ink drawn through the cap to the waste ink tank during maintenance purges. A worn or hardened foam seal fails to maintain airtight contact with the nozzle face — allowing eco-solvent carrier to evaporate from the nozzle menisci during idle, leaving pigment deposits that block the DX4's 0.02mm nozzle openings. A saturated or degraded felt pad allows waste ink to reflux onto the nozzle face during cleaning, causing smearing and cross-contamination between ink channels. Replacing the complete assembly — not just the foam cap alone — restores all three functions simultaneously.

Signs Your Cap Top Needs Replacing

• Nozzle drop-out or banding that appears after overnight shutdown but clears after cleaning cycles — classic incomplete cap seal symptom

• Ink pooling on the cap surface rather than being drawn away during purges — degraded suction caused by worn foam seal or blocked ink tube

• Visible hardening, cracking, or permanent ink saturation of the foam body

• Felt pad fully saturated with dried ink — no longer absorbing waste during cleaning cycles

• Increased cleaning cycle frequency required to recover nozzles between jobs

Roland DX4 Maintenance — Full Consumable Checklist

• Cap top (this listing) — replace at every printhead swap and at first sign of seal failure

• Head data cables — 2× 21-pin cables per DX4 head (Roland part 22805470 / various lengths)

• Dampers — replace all head dampers for the position being serviced

• Wiper blade — worn wipers smear ink on the nozzle face during maintenance cycles

Why Buy from Digiprint USA

• 100% genuine original Roland 1000004546 — not aftermarket, not compatible

• Complete assembly — foam cap + felt + ink tube included

• In stock in Doral, Miami FL — same day shipping before 2PM EST

• We also stock the Epson DX4 printhead (6000005213), DX4 data cables, and DX4 dampers

• Ideal for Latin American Roland SJ/SP/VP/XC service operations using Miami freight forwarders

View our full range of Roland printer spare parts and maintenance consumables stocked by Digiprint USA.

Frequently Asked Questions

What is the relationship between 1000004546 and 1000002794?
Both numbers refer to the same DX4 foam cap top assembly. Part number 1000004546 is the current Roland designation, superseding the earlier 1000002794. If your service documentation references 1000002794, 1000004546 is the correct current replacement — no changes to installation or function.

Does this cap top fit both eco-solvent and water-based DX4 printers?
Yes. The 1000004546 foam cap is specified for both eco-solvent and water-based applications across the full DX4 Roland platform. The foam material is solvent-resistant and compatible with both ink systems used in the listed printer range.

Is this the same cap top as the VS-640 / RE-640 / RA-640?
No. The VS-640 / RE-640 / RA-640 / XF-640 generation uses the DX5/DX6 capping unit (part 6000007135, which replaced the discontinued 6701409200) — a different physical assembly for a different head generation. The 1000004546 is specific to the older DX4-based printer range (XC-540, SP/VP/SJ/FJ series). Always verify your printer generation before ordering.

Do you ship Roland XC-540 cap tops to Latin America?
Yes — same day shipping from our Doral, Miami FL warehouse. Ideal for Latin American Roland SJ/SP/VP/XC/FJ/RS service operations and eco-solvent print shops using freight forwarders in the Doral area.