1000003627 - Sheet, Linear Scale XJ-740 (encoder strip)

Linear encoder strip – Roland XJ-740 / LEJ-640 – 1000003627

The Roland 1000003627 linear encoder strip (Sheet, Linear Scale XJ-740) is the optical scale mounted along the carriage rail of the XJ-740 and the LEJ-640 and LEJ-640FT UV hybrid printers. The encoder sensor continuously reads it to determine the exact position of the print heads.

Its graduations at 180 lines per inch (180 LPI) provide the controller with a positional reference for each pass. This precision ensures accurate drop placement and bidirectional printing without misalignment.

Supplied on its own, in the original dimensions of 2543 × 15 mm, including mounting holes. Three options are available on this product page: New (genuine Roland part), Refurbished (inspected genuine part) or New / Compatible (strip manufactured by DG Spare Parts).

Technical specifications

• OEM part number: 1000003627
• Manufacturer: Roland DG
• Part type: Linear encoder scale (linear encoder strip)
• Resolution: 180 LPI
• Dimensions: 2543 mm × 15 mm (total length, including holes)
• Axis affected: Print carriage movement
• Delivery: Single part
• Condition: New (OEM), Refurbished or New / Compatible depending on the variant selected

Compatibility and use

• Roland XJ-740
• Roland LEJ-640
• Roland LEJ-640FT

‘New / Compatible’ version – manufactured by DG Spare Parts

• Tape cut in our workshop from a generic 180 LPI encoder tape, 15 mm wide, to the original length of 2543 mm.
• Supplied without mounting holes: these must be drilled by the customer by marking out the position of the holes on their original strip.
• Same resolution and width as the original part, compatible with the existing encoder sensor.
• Made to order; does not carry the Roland manufacturer’s warranty.

Function

• To provide the encoder sensor with the carriage’s position reference
• Ensure synchronisation between the carriage’s movement and the heads’ firing
• Ensure alignment of the forward and return passes
• Maintain the dimensional accuracy of the prints

Possible symptoms of wear

• ‘Motor error’ message or carriage stoppage during printing
• Misalignment or duplication of passes in bidirectional mode
• Fine, irregular stripes across the width of the media
• Scratches, ink marks or faded graduations visible on the tape

Replacing the encoder belt restores reliable carriage positioning and eliminates registration errors caused by impaired reading.

♻️ DG Spare Parts – European specialist in spare parts for large-format printers and plotters.