Avision AV261C User manual

AV261C
Color Image Scanner
User's Manual
(D/N 250-0207-E Rev. A)
 Avision Inc. 1998

ii
Trademarks
Microsoft is a U.S. registered trademark of Microsoft Corporation.
Windows and MS-DOS are trademarks of Microsoft Corporation.
IBM, PC, AT, XT are registered trademarks of International Business
Machines Corp.
Other brands and product names herein are trademarks or registered
trademarks of their respective holders.
Copyright
All rights reserved. No part of this publication may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any
language or computer language, in any form or by any means, electronic,
mechanical, magnetic, optical, chemical, manual, or otherwise, without the
prior written permission of Avision.
Material scanned by this product may be protected by governmental laws
and other regulations, such as copyright laws, the customer is solely
responsible for complying with all such laws and regulations.

iii
Warranty
The information contained in this document is subject to change without
notice.
Avision makes no warranty of any kind with regard to this material,
including, but not limited to, the implied warranties of fitness for a
particular purpose.
Avision shall not be liable for errors contained herein or for incidental or
consequential damages in connection with the furnishing, performance, or
use of this material.

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FCC Radio Frequency Interference Statement
This equipment has been tested and found to comply with the limits for
a Class B digital device, pursuant to Part 15 of the FCC rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful
interference to radio communication. However, there is no guarantee
that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or
more of the following measures:
* Reorient or relocate the receiving antenna.
* Increase the separation between the equipment and receiver.
* Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
* Consult the dealer or an experienced radio/TV technician for help.
FCC CAUTION: To assure continued compliance,(example- use only
shielded interface cables when connecting to computer or peripheral
devices). Any changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate the
equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Responsible Party: AVISION LABS INC.
6815 Mowry Ave. Newark CA 94560,
Telephone No.: [phone]

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Table of Contents

1-1
1. Introduction
Congratulations on your purchase of Avision AV261C color
image scanner. The AV261C is compact and small to save desk
space.
You can scan both normal printing material including
photographs as well as the transparency to store them into your
computer. Then you can modify them for a variety of purposes
on your computer.
The following sections introduce the unpacking, hardware and
software installation, the operation, and maintenance information
to you. Please do take a few minutes to read through them to
keep quality scanning result possible.
Figure 1-1 shows how the scanner is packed. Please check all
the items against your checklist contained in the box or against
Figure 1-1. If there is any missing or damaged, please contact
your nearest dealer immediately for the replacement.

1-2
1. Power Adapter, 2. Cushion 3. Manual,Driver Kit CD.
4. D25P Cable, etc 5. Scanner 6. Carton
Figure 1-1 Scanner packing
1
2
3
5
6
4

2-1
2. Scanner Installation
2.1 Precautions
Ÿ Keep the scanner out of direct sunlight. Direct
exposure to the sun or excessive heat may cause
damage to the unit.
Ÿ Do not install the scanner in a humid or dusty place.
Ÿ Be sure to use the proper AC power source.
Ÿ Place the scanner securely on an even, flat surface.
Tilted or uneven surfaces may cause mechanical or
paper-feeding problems.
Ÿ Retain the scanner box and packing materials for
shipping purposes.

2-2
2.2 Unlocking the Scanner
As shown below, unlock the scanner by turning the
scanner lock to the Use position.
1. “Shipping” Position 2. “Use” Position
Figure 2-1 Unlocking the Scanner

2-3
2.3 Connecting the Cable
Connect the power cable and signal cable as shown
below.
1. Scanner 2. Power Supply
3. D25P Cable 4. PC Parallel Port
5. Printer Cable
Figure 2-2 AV261C scanner cable connection

2-4
2.4 Document Placement
As shown in Figure 2-3, place the document on the glass
with the text facing away from you.
1. Document Cover 2. Document Pad
3. Reference Frame 4. Glass
5. Document Board 6. Document
Figure 2.3 Document Placement

3-1
3. Scanner Driver Installation
To run at optimum speed, the AV261C color image
scanner is recommended to have the following minimum
requirements:
* IBM compatible PC 386/486, Pentium or later;
* Microsoft Windows 3.1,Windows 95, Windows NT;
* One printer port available (enhanced parallel port
recommended);
* 20 Megabytes of available hard disk space for
installation;
* 8 Megabytes of RAM (16 Megabytes or higher
recommended);
* A video graphics array (VGA) monitor;
* A Microsoft Windows-compatible pointing device (e.g.,
mouse);
* A CD ROM drive.
3.1 to-Installation Program
Installation procedures of AV261C Scanner driver with
Avision Auto-installation Program are as follows:
1. Start Windows 3.1 or Windows 95.
2. Insert AV261C CD into your CD ROM drive.
3. From the File Menu, choose RUN, type
d:\driver\AV261C.exe (d represents the letter for your
current CD ROM drive). Click O.K.

3-2
In Windows 95 or Windows NT
3. Press the Start button, choose RUN, type
d:\driver\AV261C.exe (d: the CD ROM drive in use), and
then click O.K. (See Figure 3-1,3-2)
4. Follow the on-screen instructions to complete the
installation.
Fig. 3.1
Fig. 3.2

3-3
3.2 Uninstall the Scanner
You can uninstall the scanner by selecting
Start….Programs….Avision Scanner AV261C and double
clicking on the Uninstall command from the Avision
Scanner AV261C.

4-1
4. Scanner Operation & Document
Printing
Scanning Images from within an Application
(TWAIN)
1. Open your application and choose Select
Source from the File menu. If the Select
Sourcemenu options are not available from the
File menu, see the user guide of your
application to learn how the TWAIN link is
used.
2. A dialog box appears containing the different
TWAIN sources that you can choose from to
bring an image into your application.
3. Select AV261C/xx VX.xx as the source.
4. When you have used the dialog box to select a
different source, you will need to select
AV261C as the source again before you can
reuse the AV261C scanner.
5. Place the image to be scanned face down on the
glass.
6. From the File menu, select Acquire.
7. AV261C TWAIN user interface will pop up on
the screen. Click on the Preview or Scan button
to get the image.

4-2
AV261C TWAIN user interface:

4-3
4.1 Image Type
AV261C provides five image types as explained in below:
Line art
Error Diffusion
Scanning Source Halftone
Gray Color
Scanning Source
Two scanning sources are provided- flatbed as
well as transparency.
Line art
Line art presents the image in black and white
only and there are no intermediate shades of gray
in between.
Halftone
In addition to the black and white display,
Halftone can present a somehow gray shade of
image by using different size of dots.
Error Diffusion
While taking up but a minimum storage space,
error diffusion gives good image texture and
excellent image details.
Gray (4096 levels gray scale)
Gray presents a 4096 shades of gray in an image.

4-4
Color
The 36 bits True Color presents 68.7 billion
colors and gives much more tonal range and
details in a color image.

4-5
4.2 Scanning Parameters & Image Control
Resolution: The number of dpi (dots per inch) that AV261C
uses for a scan. Usually the greater the number,
the higher the resolution. Yet up to a certain
level, the resolution will not be visually increased
but the disk space will be increased.
Brightness: Adjusts the lightness or darkness of an image.
The higher the value, the brighter the image.
Contrast: Adjusts the range between the darkest and the
lightest shades in the image. The higher the
contrast, the bigger the different gray scales.

4-6
Auto Level
Auto Area
Descreen
Color Match
Reset
Image Information
Auto Level: Optimizes the scanned image.
Auto Area: Automatically sets the whole document as the
scan area, no matter what its size.
Descreen: Eliminates the Moire patterns commonly found in
printed matter.
Before descreen After descreen
Invert
Advance_Settings
Quality Mode
Speed Mode
Pixel/Inch/CM
Set Gamma