Kodak I780 - Document Scanner Bedienungsanleitung

A-61504 October 2007 1-1

1 Introduction

The Kodak i600/i700 Series Scanners are high-volume production

scanners which includes 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 Datasource (both are available

on the CD that is included with the scanner).

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 vendor’s

documentation for specific information.

The Kodak i600/i700 Series Scanners provide both color/grayscale and

black and white scanning simultaneously with throughput speeds

ranging from 80 to 130 ppm.

About this manual This manual provides the following:

Chapter 1, Introduction includes a brief summary of the Kodak i600/

i700 Series Scanners.

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

dropout and much more.

Chapter 3, Using the TWAIN Datasource includes information on using

the dialog boxes presented by the TWAIN Datasource and an

explanation of the fields on each tab.

Chapter 4, Using the ISIS Driver includes information on using the tabs

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

Appendix A, TWAIN Image Processing Terminology — the TWAIN

Datasource for the Kodak i600/i700 Series Scanners has been updated

to include new terminology for traditional Kodak image processing

functions. See this appendix for a comparative chart to map between

terms.

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.

1-2 A-61504 October 2007

Image outputs The i600/i700 Series 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 black and white and color/

grayscale image. The host application controls which of these images is

transferred to the host to be stored as an image file.

The Kodak i600/i700 Series Scanners can return black and white,

grayscale or color* images to the host. Below is a description of the

valid combinations.

•Front black and white: FB.tif. This image file represents the

contents of the front side of the document using 1-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.

•Back black and white: BB.tif. This image file represents the

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

•Back color: BC.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.

These image files can be controlled through the application

independently.

FB.tif

(front black and white)

FC.jpg

(front color)

BB.tif

(back black and white)

BC.jpg

(back color)

1-4 A-61504 October 2007

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 black and white: FB.tif. This image file represents the

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

•Back grayscale: BG.jpg. This image file represents the contents of

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

•Back black and white: BB.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.

*The Kodak i610 Scanner only returns black and white/grayscale images.

FG.jpg

(front grayscale)

FB.tif

(front black and white)

BG.jpg

(back grayscale)

BB.tif

(back black and white)

A-61504 October 2007 2-1

2 Best Practices

This chapter provides you with recommendations for program logic,

which will allow you to interact efficiently with the i600/i700 Series

Scanners. 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

• Switching between color/grayscale and black and white

• Jam recovery

• Image file storage locations

• Bar code recognition

• 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)

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

driver or application.

Basic image capture Basic image capture is a 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.

2-2 A-61504 October 2007

Scanner setup To set up the scanner:

1. Set up your scanner operating conditions:

• simplex/duplex

• image order

• transport timeout

• transport timeout response

• length detection status and response

• multi-feed detection status and response

• starting document count

• Energy Star timeout

• printing parameters (printing status, print font, orientation and

strings)

• confirmation tone

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. 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 Black and white, Front

Grayscale, Rear Color, Rear Black and white, 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.

• New imaging parameters are sent from the host.

3. Prepare documents according to the instructions found in the Kodak

i600/i700 Series Scanners User’s Guide.

A-61504 October 2007 2-3

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 i600/

i700 Series Scanners User’s Guide.

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 1394 bus device Reset command is executed.

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

computer.

• Transport timeout is set to End-of-Job.

• 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 the host (via the 1394 interface) or via the

LEDs on the scanner while others are reported to both the host and the

LEDs.

An error (via the 1394 interface) is defined as either a current or

deferred error.

A current error results from a problem in processing the current scanner

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 are reported after current errors.

NOTE: Low-level 1394 commands and information are handled by the

device driver. The following information is provided for reference

only.

2-4 A-61504 October 2007

Some error conditions disable scanning and cause the document

transport to stop. This is done to prevent additional images from

entering the image buffer while allowing the host to perform fault

recovery activities.

NOTE: The scanner cannot determine exactly which images were

affected by the error and which images were not.

If an error occurs that disables the scanner, the host can continue to

read images from the image buffer without enabling the scanner.

However, when the image buffer has been emptied, an error will be

generated indicating fault recovery is required. This differentiates

between an end-of-job disable and a disable caused by an error. The

operator may continue scanning documents after the host enables the

scanner.

Controlling image

transfer order

This section provides job stream examples which can be used in

scanning applications.

The host application is responsible for determining the order in which

the scanner returns images. Front images must always be retrieved

before rear images.

Black and white only -

duplex

This job stream is available for all i600/i700 Series Scanners.

1. Prepare documents.

2. Start the scanner to do black and white duplex scanning (front black

and white and rear black and white).

3. Setup the scanner to retrieve black and white images.

4. Enable the scanner and start polling.

Loop

Read front black and white image header

Read front black and white image

Read rear black and white image header

Read rear black and white image

End loop

A-61504 October 2007 2-5

Color only - duplex This job stream is available for i620, i640, i660 and i780 Scanners.

1. Prepare documents.

2. Start the scanner to do color duplex scanning (front color and rear

color).

3. Setup the scanner to retrieve color images.

4. Enable the scanner and start polling.

Loop

Read front color image header

Read front color image

Read rear color image header

Read rear color image

End loop

Grayscale only - duplex This job stream is available for all i600/i700 Series Scanners.

1. Prepare documents.

2. Start the scanner to do grayscale duplex scanning (front grayscale

and rear grayscale).

3. Setup the scanner to retrieve grayscale images.

4. Enable the scanner and start polling.

Loop

Read front grayscale image header

Read front grayscale image

Read rear grayscale image header

Read rear grayscale image

End loop

2-6 A-61504 October 2007

Dual stream - black and

white and color - duplex

This job stream is available for i620, i640, i660 and i780 Scanners.

1. Prepare documents.

2. Start the scanner to do dual stream duplex scanning by selecting

front black and white, front color, rear black and white and rear

color.

3. Setup the scanner to retrieve black and white images first.

4. Enable the scanner and start polling.

Loop

Read front black and white image header

Read front black and white image

Read front color image header

Read front color image

Read rear black and white image header

Read rear black and white image

Read rear color image header

Read rear color image

End loop

Dual stream - black and

white and grayscale -

duplex

This job stream is available for all i600/i700 Series Scanners.

1. Prepare documents.

2. Start the scanner to do dual stream duplex scanning by selecting

front black and white, front grayscale, rear black and white and rear

grayscale.

3. Setup the scanner to retrieve black and white images first.

4. Enable the scanner and start polling.

Loop

Read front black and white image header

Read front black and white image

Read front grayscale image header

Read front grayscale image

Read rear black and white image header

Read rear black and white image

Read rear grayscale image header

Read rear grayscale image

End loop

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