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Small rectangular paper sensor circuit board with connector

YINGHUA

YINGHUA QM7-4573 QM7-4572 Paper Sensor for Canon G1800 G1810 G2800 G2810 G3800 G3810 G4800 G4810

SKU CH-8277-KK7K2

Detects paper presence in Canon G-series printers using part numbers QM7-4573 and QM7-4572

  • Product TypePrinthead
  • Direct replacement for Canon G-series printers using part numbers 4573 and 4572
  • Restores reliable paper detection on G1800, G1810, G2800, G2810, G3800, G3810, G4800 and G4810 models
  • New YINGHUA sensor matches original specifications for consistent feed performance
  • Supports multiple compatible part references for flexible sourcing

Replacement Paper Sensor for Canon Printers

This paper sensor replaces the original QM7-4573 and QM7-4572 parts in compatible Canon PIXMA models. It restores paper detection when the original sensor fails or becomes misaligned. The part fits G1800, G1810, G2800, G2810, G3800, G3810, G4800 and G4810 printers. It is supplied new and ready for installation.

Mechanical Switch Limits Reliability

The sensor uses a mechanical lever that can jam if paper dust accumulates inside the tray. It detects presence only, not paper size or type, so the printer firmware handles all media logic. A bent actuator arm will cause false jam errors even with fresh paper loaded. The component has no electronic diagnostics, so faults must be confirmed by visual inspection or swap testing.

Highlights

  • Direct replacement for Canon G-series printers using part numbers 4573 and 4572
  • Restores reliable paper detection on G1800, G1810, G2800, G2810, G3800, G3810, G4800 and G4810 models
  • New YINGHUA sensor matches original specifications for consistent feed performance
  • Supports multiple compatible part references for flexible sourcing

Specifications

Product TypePrinthead

Questions about this item

Which part number matches my printer, QM7-4573 or QM7-4572?

Both part numbers are listed as compatible with the Canon G1800, G1810, G2800, G2810, G3800, G3810, G4800 and G4810 models.

What does this sensor do once installed in the printer?

It detects paper presence and position so the printer can feed sheets correctly and avoid jams or misfeeds.

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