For BearPaws, look at the Plustek, MA-1509, and gt68xx backends.

The backend needs work especially in the quantization code but it may work.

Driver provides: Binary, Despeckle, Deskew, Cropping, Calibration, other resolutions.

Driver provides: Binary, Despeckle, Deskew, Cropping, Calibration.

Imprinter, barcode, custom gamma and multistream unsupported.

For Umax Astra 4450 Scanner Plus Grayscale And

Software creates other resolutions, plus grayscale and binary modes.

Hardware grayscale mode is not used due to poor calibration.

For other Mustek BearPaws, look at the Plustek and the MA-1509 backend.

Image is upside down because hardware in this model is upside down.

This backend should work with all Ricoh scanners in the IS450 family as well as the IS420 series, but the IS420 has not yet been tested.

Features provided by the optional Image Processing Unit (IPU) are not yet integrated into the backend, as my scanner lacks the IPU.

Certain non-scanning features, such as those related to scanner maintenance, are not supported.

Such features would be better implemented in a separate stand-alone tool.

For instance, if you replace the ADF Unit, you must recalibrate the scanner optics using a Ricoh Test Sheet and reset the E2PROM registers.

Does grayscale or colour scans in the following sizes: wallet, 3x5, 4x6, 5x7, 8x10, letter.

SCSI driver issue Please contact me if you own such a device.

Driver For Umax Astra 4450 Scanner For Mac