Kodak I800 Series Manuel utilisateur

i800 Series Scanners

Image Processing Guide

User’s Guide

A-61510

ISIS is a registered trademark of Pixel Translations, a division of Input

Software, Inc.

Windows and Windows NT are either registered trademarks or

trademarks of Microsoft Corporation in the United States and/or other

countries.

A-61510 January 2005 1-1

1 Introduction

Kodak i800 Series Scanners

The i800 Scanners are high-volume

production scanners which include

image processing technology that

can improve image quality and

sometimes make the reproduction

better than the original.

You can use the ISIS Driver or

TWAIN Data source (both are

available on the CD that is included

with the scanner) or Kodak Digital

Science Capture Software to enable

image processing.

Other popular scanning applications are also compatible with these

scanners, however, these applications may not be able to access all of

the image processing options. Please refer to your application vendor’s

documentation for specific information.

The features Four configurations of the i800 Series Scanners are available.

♦ Kodak i810 Scanner (bi-tonal) provides bi-tonal scanning with

throughput speeds up to 120 ppm.

♦ Kodak i820 Scanner provides both color/grayscale and bi-tonal

scanning simultaneously with throughput speeds up to 120 ppm.

♦ Kodak i830 Scanner (bi-tonal) provides bi-tonal scanning with

throughput speeds up to 160 ppm.

♦ Kodak i840 Scanner provides both color/grayscale and bi-tonal

scanning simultaneously with throughput speeds up to 160 ppm.

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About this manual This manual provides the following:

Chapter 1, Introduction – includes a brief summary of the Kodak i800

Series Scanners, a list of features available for each scanner and the

support drivers.

Chapter 2, Best Practices – includes information to use when setting up

applications, recommendations on how to handle jam recoveries, image

addressing information, controlling print streams, electronic color

drop-out and much more.

Chapter 3, Using the TWAIN Data source – information on using the

dialog boxes presented by the TWAIN Data source and an explanation

of the fields on each tab.

Chapter 4, Using the ISIS Driver – information on using the dialog boxes

presented by the ISIS driver and an explanation of fields on each dialog

box.

Appendix A – provides a list of differences between the traditional

high-volume Kodak scanners vs. the Kodak i800 Series Scanners.

Appendix B – provides information about what type of setups are

allowed and how they can be mixed and matched.

NOTE: The scanned images used in this guide were selected for the

challenges presented to a typical scanner due to the

low-contrast characteristics of the images.

A-61510 January 2005 1-3

Image outputs i800 Series Scanners can return bi-tonal, grayscale or color images to

the host. Below is a description of the valid combinations.

All i800 Scanners are duplex scanners. This means both the front and

the rear side of each document may be captured. For each side

captured, the scanner creates a bi-tonal/binary only (i810/i830) or a

bi-tonal/binary and color/grayscale (i820/i840) image. The host

application controls which of these images is transferred to the host to

be stored as an image file. For example, for an i840 Scanner if all four

images are returned to the host, the following four files could be created:

• Front bi-tonal/binary: FB.tif. This image file represents the

contents of the front side of the document using one-bit per pixel.

• Front color: FC.jpg. This image file represents the contents of the

front side of the document using 24-bits per pixel.

• Rear bi-tonal/binary: RB.tif. This image file represents the contents

of the rear side of the document using one-bit per pixel.

• Rear color: RC.jpg. This image file represents the contents of the

rear side of the document using 24-bits per pixel.

NOTE: Actual file formats are determined by the host application.

Through the application these image files can be controlled

independently.

FB.tif (front bi-tonal) FC.jpg (front color) RB.tif (rear bi-tonal) RC.jpg (rear color)

A-61510 January 2005 1-4

Another example of a simultaneous output where all four images are

returned to the host would create the following four files:

• Front grayscale: FG.jpg. This image file represents the contents of

the front side of the document using 8-bits per pixel.

• Front bi-tonal/binary: FB.tif. This image file represents the

contents of the front side of the document using 1-bit per pixel.

• Rear grayscale: RG.jpg. This image file represents the contents of

the rear side of the document using 8-bits per pixel.

• Rear bi-tonal/binary: RB.tif. This image file represents the contents

of the rear side of the document using 1-bit per pixel.

NOTE: Actual file formats are determined by the host application.

These image files can be controlled through the application

independently.

FG.jpg (front

grayscale)

FB.tif (front

bi-tonal/binary)

RG.jpg (rear

grayscale)

RB.tif (rear

bi-tonal/binary)

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2 Best Practices

This chapter provides you with recommendations for program

logic, which will allow you to interact efficiently with the i800

Scanner. This high-level information is not intended to be used

as a coding guide. The following information is provided in this

chapter:

• Basic image capture

• Controlling image transfer order – switching between

color/grayscale and bi-tonal

• Jam recovery

• Image file storage locations

• Bar code recognition

• Starting image addresses

• Controlling print strings

• Electronic Color Dropout (form design, drop-out colors)

• Available image header information and its uses

• Zone processing (recombining images, especially for viewing)

• Programmable keys

• Patch reading

• Batching

NOTE: The term host in the sections that follow refers to either the

driver or application depending on code logic.

Basic image capture Basic image capture is the high-level logic flow for retrieving images

from the scanner.

Follow this sequence to scan documents: set up the scanner,

enable scanning, initiate polling, feed documents and disable

scanning.

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Scanner setup To set up the scanner:

1. Set up your scanner operating conditions:

• simplex/duplex

• starting image address

• image order

• lamp timeout

• transport timeout

• transport timeout response

• length detection status and response

• multi-feed detection status and response

• page-on-demand or batch count mode

• starting document count

• batching parameters (batch level, count, start and

end-of-batch functions)

• patch parameters (patch types to recognize, transfer patch

definition)

• printing parameters (printing status, print font, orientation

and strings)

• programmable keys

• level to follow level rules

• confirmation tone

• image address formats

For information on programming these conditions, see Chapters

3 or 4 (depending on your driver). For other vendor tool kits, refer

to their documentation.

2. Select your Color table as appropriate for color document

scanning. See Chapters 3 or 4 (depending on your driver).

For other vendor tool kits, refer to their documentation.

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3. Determine if any changes to the Image Processing

parameters need to be made for the current application.

NOTE: This check needs to occur for up to four separate images

from the six available options depending on your

application: Front Color, Front Bi-tonal, Front Grayscale,

Rear Color, Rear Bi-tonal, Rear Grayscale.

Image Processing parameter changes remain in effect until

one of the following conditions occur:

• The scanner is powered down using the power switch.

• A SCSI bus device Reset command is executed.

• New imaging parameters are sent from the host.

4. It is recommended that you calibrate the scanner. For

procedures on how to do this, see the Kodak i800 Series

Scanners,User’s Guide.

5. Prepare documents according to the instructions found in the

Kodak i800 Series Scanners, User’s Guide.

Enable scanning The host must issue a Scan command to enable scanning before

documents can be transported through the scanner. If scanning has

not been enabled, the feeder and transport system will not turn on.

Initiate polling Initiate host system polling of the scanner to ensure scanned

document images are transferred from the image buffer to the host

system. Polling should continue until scanning is disabled.

For more information see the sections entitled, “Controlling

image transfer order” and “Image header information” later in this

chapter.

Feed documents Feed documents according to the instructions found in the Kodak

i800 Series Scanners, User's Guide.

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Disable scanning Scanning is disabled to allow the host to download configuration/

setup changes between jobs and to handle certain types of errors.

Scanning is also disabled when one of the following conditions

occur:

• The scanner is first powered on using the power switch.

• A SCSI bus device Reset command is executed.

• An End-of-Job indicator is sent by the operator from the operator

control panel.

• A scanner-unique End-of-Job command is issued by the host

computer.

• An error occurs requiring fault recovery.

NOTE: When scanning is disabled, documents cannot be scanned

until the host enables scanning.

Error handling The scanner recognizes and reports a variety of error conditions.

Some errors are reported to either the host (via the SCSI interface) or

the operator control panel, while others are reported to both the host

and the operator control panel.

An error (via the SCSI interface) is defined as either a current or

deferred error.

A current error results from a problem in processing the current

SCSI command. This can include sending an invalid command,

trying to read from an empty image buffer, or an end-of-job

condition. Since one or more errors may be pending at any time,

current errors are reported first.

A deferred error results from an error condition within the scanner,

such as a document jam. Deferred errors that may have occurred

are reported after current errors.

NOTE: Low level SCSI commands and information will be handled

by your device driver. The following information is provided

for reference only.

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