Ricoh Gen5/7PL MH5421 Cable: 248mm - J36002

This Ricoh Gen5/7PL Water-based Printhead MH5421 Cable: 248mm - J36002  with a total length of 248mm is suitable for a range of water-based printers. It supports up to 2 colours and has a total of 1.280 nozzles. It is built with longevity and robustness in mind and used in the latest industrial inkjet printers. This is Ricoh original printhead and it is covered by a manufacturer warranty.

Product overview

    What is this part? The Ricoh Gen5 (MH5421) industrial inkjet printhead, part number J36002, is a 1,280‑nozzle, water‑based ink printhead with a short (248 mm total) cable intended for two‑color or grayscale industrial printing applications.

    Primary use cases: textile, label, packaging and other industrial aqueous‑ink printing systems where compact head / short cable layouts are required.

Key specifications (quick bullet facts)

•     Nozzles: 1,280 (4 × 320 channels), staggered.
•     Native drop size: 7 pL (multi‑drop grayscale up to 21 pL or higher depending on configuration).
•     Colors supported: up to 2 colors for MH5421 model (two‑color configuration) and grayscale capability.
•     Print width / head dimension: head element ~54.1 mm print width; body dimensions ≈ 89 × 69 × 24.5 mm (excluding cable/connectors).
•     Cable length / total length: marketed as the 248 mm (short‑cable) version (Ricoh part J36002).
•     Jetting frequency / speed: high frequency design (manufacturer data lists up to tens of kHz jetting; see product page for exact rated max).
•     Temperature & control: integrated heater and thermistor; operating range typically up to ~50–80°C depending on spec sheet and installation.
•     Materials and durability: stainless steel construction, corrosion‑resistant components, long service life (manufacturer lifecycle metrics cited for billions of actuations).

Compatibility and integration

•     Ink compatibility: designed primarily for aqueous (water‑based) inks; some suppliers list compatibility notes for specific ink families—confirm with ink vendor and Ricoh for your specific formulation.
•     Controller / printer compatibility: used in many industrial printers listed by aftermarket suppliers; verify mechanical mounting, electrical connector pinout, and firmware/driver compatibility with your controller.
•     Mechanical notes: short cable version is optimized for compact printhead placement; ensure your carriage/printbar spacing matches nozzle row geometry and row‑to‑row offsets.

Performance and quality

•     Resolution and nozzle spacing: nozzle spacing ~0.1693 mm (1/150"); supports high resolution (up to ~600 dpi effective with multi‑row staggering).
•     Grayscale and drop control: multi‑drop capability (7/14/21 pL or manufacturer‑dependent) gives grayscale rendering; confirm required drop tables for your RIP/driver.
•     Expected lifetime: industrial design with long life; suppliers quote very high actuation lifetimes (manufacturer lifecycle figures available in spec sheets).

Ordering and part variants

•     Exact part number to order: MH5421 — Ricoh J36002 for the 248 mm (short cable) variant.
•     Alternate cable length: 500 mm / long cable variant exists (different Ricoh part number often listed for long cable).
•     OEM vs aftermarket: We are available as original Ricoh OEM units from authorized distributors and as aftermarket/third‑party listings - prefer OEM for reliability and warranty.

Installation, maintenance and troubleshooting

•     Mounting tips: align nozzle row carefully, set correct head spacing and anti‑collision protection, and ensure heater/thermistor wiring is connected for thermal control.
•     Priming / flushing: follow ink system priming recommendations; use compatible cleaning fluids for aqueous inks and avoid contact with actuator surfaces (ink path isolation is a design feature).
•     Common faults: clogged nozzles, air in ink path, misalignment, and connector/cable damage; maintain filtration and proper ink viscosity.
•     Spare parts and consumables: nozzle plates, connectors and removable ink‑hose fittings are common consumables—confirm availability from your supplier.

Purchase checklist (yes/no quick items before buying)

1.     Is this the correct cable length for your printer carriage? (short/248 mm)
2.     Does your ink chemistry match aqueous compatibility?
3.     Can your controller support the electrical pinout and jetting frequency?
4.     Do you need a two‑color head (MH5421) or four‑color alternative (MH5441)? (choose MH5421 for two colors)

Pricing, lead time, and warranty (what to ask us)

•     Ask for: unit price, MOQ (if any), lead time, OEM warranty terms, and return/DOA policy.
•     Ask for: a copy of the Ricoh product datasheet and interface/connector pinout drawing.
•     Request: sample jet‑test images or a test‑report showing drop volumes and nozzle health prior to shipment (if available).

One-line example specification to send to us.

    “Request quote for Ricoh MH5421 (Gen5 7PL) printhead, Ricoh part J36002, short cable 248 mm, aqueous ink version, 1,280 nozzles, two‑color configuration — include price, lead time, OEM warranty, and datasheet.”