Kodak A-61555 manual Patch function overview, Patch Readers, Patch types

Patch function overview

All i1800 Series Scanners provide toggle patch capability. This type of patch is used to trigger the scanner to switch from the current image stream (black-and-white) to the alternative image stream (color/ grayscale).

The Patch Readers	The Patch Readers allow you to automatically increment the image
	address or initiate a special function. Image addressing must be
	enabled in order to use the Patch Readers. Patch sheets are inserted
	during document preparation.
	There are four off-center, permanently mounted Patch Readers. They
	can be independently enabled or disabled by your capture software
	application.
	If more than one Patch Reader is enabled and any one of the enabled
	Patch Readers successfully decodes the patch, then the patch will be
	read. Also, if the patch bars pass under more than one patch head that
	is enabled, there is a higher probability that the patch will be read.
	NOTE: Almost all patch reading problems are related to poor quality
	patch codes or patch sheets. Using only the best quality printed
	patch sheets will ensure the highest possible read rates.
	See Kodak publication A-61599, Patch Code Information, for complete
	information.
Patch types	Patch Types 1, 4, and 6 — these patch types can be used by the
	capture software application to perform post-scan functions. These
	patches are not used for image addressing.
	IMPORTANT: Do not use these illustrated patches for production —
	they are not to spec.
Patch 1	Patch 4	Patch 6

Toggle Patch — the Toggle patch is a Type 4 patch that is used to trigger the scanner to switch from the current image stream (black-and- white) to the alternative image stream (color/grayscale).

NOTE: Toggle patch orientation is different depending on whether image addressing is disabled or enabled.

4-12 A-61555 April 2009