July 2013
702P00245
Xerox® DocuMate® 4799/4790
Performance and Image Quality
Expectations Guide
Including general specifications for
the Xerox® DocuMate® 4700
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Table of Contents
Preface ............................................................................................................. v
General Purpose and Audience.........................................................................................................v
FreeFlow Makeready Scanner Support..............................................................................v
Additional Resources............................................................................................................................vi
1
Introduction...............................................................................................1-1
Xerox DocuMate 4799........................................................................................................1-1
Xerox DocuMate 4790........................................................................................................1-2
Versatile Scanning Solution for Large Documents...............................................................1-2
Xerox DocuMate 4700........................................................................................................1-2
Specifications............................................................................................2-1
Specifications at a Glance .................................................................................................2-1
2
3
Specifications ......................................................................................................................................2-2
Performance and Image Quality.......................................................3-1
Performance ........................................................................................................................................3-1
Performance at a Glance....................................................................................................3-2
Scanning Speeds....................................................................................................................3-3
Summary...................................................................................................................................3-4
Image Quality .....................................................................................................................................3-4
Image Quality Evaluation1 ................................................................................................3-5
Summary...................................................................................................................................3-6
Support ........................................................................................................4-1
Service/Maintenance Kits...................................................................................................4-1
FreeFlow Scanner Support .............................................................................................................4-1
4
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Preface
General Purpose and Audience
This document provides a comparative evaluation of the features and characteristics of the
Xerox® DocuMate® 4799 against a reference scanner selected by Xerox (FreeFlow® Scanner
665), and includes additional functional specifications and/or descriptions of the Xerox
DocuMate 4790 and DocuMate 4700 (refer to Section 1: Versatile Scanning Solution for Large
Documents) scanners. It is designed to help customers understand the capabilities and
specifications of the Xerox DocuMate 4799 and DocuMate 4790 prior to making a buying
decision.
Important Note
The Xerox DocuMate range of scanners deliver high-quality black and white and office-quality
color scanned documents that may not be suitable for all scanning applications and/or
customer environments. As such, Customers should carefully evaluate the capabilities and
image quality characteristics of the specific Xerox DocuMate scanner they are considering to
ensure the scanner is suitable for their environment and Xerox printing system(s). The
guidelines outlined herein are provided for informational use only and are not intended to be
comprehensive of all factors that should be considered.
Customers who are considering the Xerox DocuMate range of scanners as a replacement for
an existing FreeFlow Scanner 665 should not expect to achieve the same levels of image
quality and productivity for most scanning applications. However, the Xerox DocuMate
scanners are still among the best quality scanners supported for use with FreeFlow Makeready
on the market today.
FreeFlow Makeready Scanner Support
For customers who require assistance selecting a suitable scanner to use with FreeFlow
Makeready® and/or are interested in purchasing scanning hardware directly from Xerox, Xerox
offers the DocuMate range of scanners.
As the newest additions to the Xerox DocuMate product range, the Xerox DocuMate 4799 and
DocuMate 4790 provide advanced document handling and image processing technology and
are designed for easy operation in a variety of environments with complex document scanning
requirements. The Xerox DocuMate 4799 also supports sRGB, making it color-space
compatible with the Xerox iGen digital press.
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Additional Resources
Xerox DocuMate 4799 and 4790 Data Sheets
Xerox DocuMate 4700 Data Sheet
Xerox DocuMate 4799 and 4790 User Guides
Xerox DocuMate 4700 User Guide
FreeFlow Makeready 9.0 Customer Expectations Guide (CED)
vi
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1
1 Introduction
Since the initial introduction of the Xerox® DocuMate® product line, Visioneer has been
combining its leading scanner technology with the brand recognition of Xerox to deliver a
broad range of scanning solutions for workgroup and mid-volume production environments.
Xerox DocuMate high-performance business scanners and imaging software solutions offer
customers speed, image quality, advanced paper handling and ease-of-use with exclusive
Visioneer OneTouch® Technology.
Designed for mid-volume production environments, the Xerox DocuMate 4799 and DocuMate
4790 continue this tradition by delivering high-quality black and white and office-quality color
scanned documents to Xerox printing systems.
The Xerox DocuMate 4799 and DocuMate 4790 are integrated with FreeFlow Makeready®
via the TWAIN interface (TWAIN version 1.9 or above), which may be accessed directly from
the Makeready PC. TWAIN is a widely recognized standard that computers use to receive
images from scanners, digital cameras, and other digital devices.
Xerox DocuMate 4799
The Xerox DocuMate 4799 delivers superior reliability and the most advanced functionality for
high-production environments. By employing three advanced sensor systems: ultrasonic
double feed detection, stapled document detection and intelligent feed control, this innovative
scanner ensures that documents of various sizes can be stacked together in the automatic
feed tray and will be processed at scan speeds up to 112 pages per minute.
Key Features
112 ppm/224 ipm*
A3 (11" x 17") paper size
ADF holds 350 pages†
Staples Document Detection
3 Ultrasonic Double Feed Detection Sensors
Color Space compatibility with Xerox® iGen Digital Press
Pre- and Post-Scan Imprinter (sold separately)
Intelligent Feed Control
Multi-Color Dropout
Easy Maintenance
* Landscape US Letter and A4
† 20 lb., 75-80 g/m2 paper
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Introduction
Xerox® DocuMate® 4799 and 4790
Xerox DocuMate 4790
The Xerox DocuMate 4790 is a dependable scanner for both large-volume and distributed
scanning needs with a daily duty cycle of up to 10,000 sheets and scans up to 90 pages per
minute. It is powered by Visioneer OneTouch scanning technology for simplifying scan jobs
and workflows. The scanner also has an easy-to-read LCD screen with resolution, color mode,
file type, processing and final destination of the scanned document.
Key Features
90 ppm/180 ipm*
A3 (11” x 17”) paper size
ADF holds 200 pages†
LCD Front Panel for job control, status and alerts
Visioneer OneTouch® Scanning Buttons
Stapled Document Detection
Ultrasonic Double Feed Detection
Pre-Imprinter
Double Feed Skip Key
Ionizer to reduce dust
* Landscape US Letter and A4
† 20 lb., 75-80 g/m2 paper
For more information about the Xerox DocuMate 4799 and DocuMate 4790, including
detailed product specifications, contact your local Xerox Sales Representative or visit us on the
Versatile Scanning Solution for Large
Documents
Xerox DocuMate 4700
The Xerox DocuMate 4700 is an 11.7" x 17" flatbed scanner with a built-in USB hub. The hub
enables the DocuMate 4700 to be connected directly to a PC and used as a stand-alone
flatbed scanner, or an Automatic Document Fed (ADF) scanner can be connected through its
USB port for added functionality.
When connected in tandem (‘daisy-chain’) with a Xerox DocuMate 4799 or DocuMate 4790,
the Xerox DocuMate 4700 provides the ability to scan delicate or oversized (up to
A3/11.7"x17") documents that would not otherwise be possible with the ADF alone. A “combo”
scanner driver supplied with the DocuMate 4700 provides the ability to automatically switch
between scanners to capture documents from either source without the need to manually
disconnect and reconnect devices.
The Xerox DocuMate 4700 has been designed specifically for departmental or production
scanning environments and may be a suitable option as a complement to the Xerox DocuMate
4799 and DocuMate 4790 for customers interested in undertaking a wider variety of scanning
tasks.
1-2
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Xerox® DocuMate® 4799 and 4790
Introduction
Key Features
A3 (11.7" x 17") USB Flatbed Scanner
Versatile flatbed option for sheet-fed scanner or direct connect to PC
Visioneer OneTouch® pre-programmed ‘scan-to’ destinations
Hi-speed USB 2.0 interface (USB 1.1 compatible)
For more information about the Xerox DocuMate 4700, including detailed product
specifications, contact your local Xerox Sales Representative or visit us on the web at
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2 Specifications
2
The following section provides an overview of the functional specifications of the Xerox
DocuMate 4799 and DocuMate 4790 in comparison to the FreeFlow Scanner 665 (hereafter
referred to as the “Reference Scanner”).
Specifications at a Glance
Reference Scanner
Xerox DocuMate 4790 Xerox DocuMate 4799
Productivity
(black & white/color)
/
/
/
Optical Resolution
Output Resolution
Output Bit Depth
Document
Handling Sizes
Media Types
Tracy Capacity
Mixed Length
Document Glass
Error Handling
Duty Cycle
Overall
Fair Good Very Good
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Specifications
Xerox® DocuMate® 4799 and 4790
Specifications
Reference Scanner
Xerox DocuMate 4790
Xerox DocuMate 4799
400 dpi
Scan Speed1
(black & white,
400 dpi
65 simplex
400 dpi
50 simplex
82 simplex
grayscale or color @
400 and 600 dpi)
images/minute, 20
duplex images/minute
black & white
images/minute, 100
duplex images/minute
black & white
images/minute, 157
duplex images/minute
black & white
60 simplex
49 simplex
66 simplex
images/minute, 20
duplex images/minute
color
images/minute, 67
duplex images/minute
grayscale
images/minute, 66
duplex images/minute
grayscale
35 simplex
39 simplex
600 dpi
65 simplex
images/minute, 20
duplex images/minute
black & white
images/minute, 37
duplex images/minute
color
images/minute, 39
duplex images/minute
color
600 dpi
600 dpi
34 simplex
46 simplex
40 simplex
images/minute, 69
duplex images/minute
black & white
images/minute, 89
duplex images/minute
black & white
images/minute, 20
duplex images/minute
color
33 simplex
34 simplex
images/minute, 35
duplex images/minute
grayscale
images/minute, 32
duplex images/minute
grayscale
17 simplex
14 simplex
images/minute, 17
duplex images/minute
color
images/minute, 16
duplex images/minute
color
Scan Method
Full Width Array (FWA)
image sensor (single
CCFL light source)
Dual Color Contact
Image Sensor (CCFL
light source), switchable
black or white
Dual Charge-Coupled
Device (CCD) / white
LED light source
background
Optical Resolution
Output Resolution
600 dpi
600 dpi
600 dpi
Up to 1200 dpi
monochrome, 600 dpi
color
Up to 600 dpi
Up to 600 dpi
Output Bit Depth
24-bit color, 1-bit black
and white
24-bit color, 8-bit
grayscale, 1-bit black
and white
24-bit color, 8-bit
grayscale, 1-bit black
and white
Interface
Ultra Wide SCSI
Hi-speed USB 2.0 (1.1
compatible)
Hi-speed USB 2.0 (1.1
compatible)
Dimensions
31.3"(w) x 26.4"(d) x
13.9"(h)
(795 x 671 x 353 mm)
18.5" (w) x 17.5"(d) x
13.4"(h)
(468 x 444 x 339 mm)
18.7"(w) x 23"(d) x
13"(h)
(474 x 585 x 329 mm)
Weight
97 lbs. (44 kg)
40 lbs. (18 kg)
55 lbs. (25 kg)
ADF Minimum
Document Size
5.5" x 8.27"
(140 mm x 165 mm)
1.9" x 2.8"
(48 mm x 70 mm)
1.9" x 2.8"
(48 mm x 70 mm)
2-2
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Xerox® DocuMate® 4799 and 4790
Specifications
Reference Scanner
Xerox DocuMate 4790
Xerox DocuMate 4799
ADF Maximum
Document Size
11.7" x 17"
(297 x 432 mm)
11.7" x 17"
11.7" x 17"
(297 x 432 mm): custom
lengths up to 100"
(2,540 mm)
(297 x 432 mm): custom
lengths up to 100"
(2,540 mm)
ADF Capacity
Document Glass
Duty Cycle
100 sheets (20 lb., 75-80 200 sheets (20 lb., 75-80 350 sheets (20 lb., 75-80
g/m2 paper)
g/m2 paper)
g/m2 paper)
Up to 12" x 18"
(305 mm x 457 mm)
Not available
Not available
3,500 pages/day
15,000 pages/day
40,000 pages/day
1 Based on manufacture’s specifications
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3 Performance and
Image Quality
3
The following section includes both objective and subjective criteria, which is intended to
provide a comparative evaluation of the features and characteristics of the Xerox DocuMate
4799. The features and characteristics of this scanner, which serve as the test criteria, were
logically split into two groups: formalizable (e.g. performance), which can be expressed
numerically and non-formalizable (e.g. image quality), which represent general impressions.
Important Note
The Xerox DocuMate range of scanners deliver high-quality black and white and office-quality
color scanned documents that may not be suitable for all scanning applications and/or
customer environments. As such, Customers should carefully evaluate the capabilities and
image quality characteristics of the specific Xerox DocuMate scanner they are considering to
ensure the scanner is suitable for their environment and Xerox printing system(s). The
guidelines outlined herein are provided for informational use only and are not intended to be
comprehensive of all factors that should be considered.
Customers who are considering the Xerox DocuMate range of scanners as a replacement for
an existing FreeFlow Scanner 665 should not expect to achieve the same levels of image
quality and productivity for most scanning applications. However, the Xerox DocuMate
scanners are still among the best quality scanners supported for use with FreeFlow Makeready
on the market today.
For the purpose of the evaluation, the tests were performed using the Xerox DocuMate 4799
and the Reference Scanner using a set of first generation copies of original test patterns/
images scanned directly to a PC running FreeFlow Makeready. The obtained scans were
captured independent of applying image enhancement software, which might otherwise
improve or enhance the appearance of the test patterns/images.
Note:
The following performance and image quality evaluation focuses on the Xerox DocuMate
4799 only. Customers interested in the Xerox DocuMate 4790 (or DocuMate 4700) should
evaluate the features and characteristics of this scanner to determine if it is a suitable solution
for their environment
Performance
The Xerox DocuMate 4799 (and DocuMate 4790), as well as the Reference Scanner, are
equipped with Duplex Automatic Document Feeders (ADF), allowing them to scan multi-page,
duplex (two-sided documents). The Xerox DocuMate 4799 achieves optimal throughput by
scanning both sides of a document simultaneously through the use of dual-image sensors
versus the Reference Scanner, which scans each side of a document independently using a
single image sensor. The Reference Scanner also incorporates a stationary glass surface
(flatbed) for scanning delicate or oversized (up to 12"x18") documents that cannot be
accommodated via the ADF.
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Performance and Image Quality
Xerox® DocuMate® 4799 and 4790
Other factors, such as the color depth and resolution (dpi – dots per inch) of the scanned
image, as well as the scanning interface itself, also contribute to the overall speed of the
scanner. The Reference Scanner was connected to the FreeFlow Makeready PC via an Ultra-
Wide SCSI interface, which provides the best performance especially for high volume scanning
operations (large data). The Xerox DocuMate 4799 utilizes a Hi-speed USB 2.0 interface, which
offers plug-and-play convenience and is more widely used in the industry today.
FreeFlow Makeready allows customers to scan black and white or color documents and save
them as RDO (Raster Document Object) or Adobe PDF (Portable Document Format) files.
Makeready provides two options for saving scanned documents as PDFs: a Xerox option and
an Acrobat (Distiller) option. Both options produce an Adobe PDF file, however, the resulting
file size may vary depending on the option selected and/or the scanner driver.
Performance at a Glance
Reference Scanner
Xerox DocuMate 4799
Scan Speeds (20 page, 8.5" x 11" landscape document at 600 dpi)
Black & White
Grayscale1
Color
Simplex
Duplex
File Size
Simplex
Duplex
File Size
Simplex
Duplex
File Size
Overall
Fair Good Very Good
1 In order to simulate grayscale (8 bits per pixel), the Reference Scanner captures halftone
images at 1 bit per pixel (black and white) and renders them using halftone screening. Refer to
Image Quality for more information
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Xerox® DocuMate® 4799 and 4790
Performance and Image Quality
Scanning Speeds
The following tables show the speed of the Xerox DocuMate 4799 compared to the Reference
Scanner based on a 20 page, 8.5" x 11" landscape document (mix of black and white, and color
text and images) scanned at 600 dpi, as well as the size of the resulting file that was captured
and saved in RDO and Adobe PDF file formats in FreeFlow Makeready.
Black and White
Simplex/Landscape (600 dpi)
Reference Scanner
Xerox DocuMate 4799
Scan Speed
25 seconds (1.2 sec/page)
31 seconds (1.5 sec/page)
RDO file size
22.5 MB
21.3 MB
21.3 MB
27.6 MB
27.1 MB
27.1 MB
Save as PDF with Xerox option
Save as PDF with Acrobat
option
Duplex/Landscape (600 dpi)
Reference Scanner
Xerox DocuMate 4799
Scan Speed
115 seconds (5.75 sec/page)
32 seconds (1.6 sec/page)
RDO file size
22.6 MB
21.4 MB
21.4 MB
27.8 MB
27.5 MB
27.4 MB
Save as PDF with Xerox option
Save as PDF with Acrobat
option
Grayscale1
Simplex/Landscape (600 dpi)
Reference Scanner
Xerox DocuMate 4799
Scan Speed
57 seconds (2.85 sec/page)
RDO file size
59.1 MB
326.4 MB
60.4 MB
Save as PDF with Xerox option
Save as PDF with Acrobat
option
Duplex/Landscape (600 dpi)
Reference Scanner
Xerox DocuMate 4799
Scan Speed
80 seconds (4.0 sec/page)
RDO file size
68.6 MB
365.3 MB
70 MB
Save as PDF with Xerox option
Save as PDF with Acrobat
option
1 In order to simulate grayscale (8 bits per pixel), the Reference Scanner captures halftone
images at 1 bit per pixel (black and white) and renders them using halftone screening. Refer to
Image Quality for more information
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Performance and Image Quality
Xerox® DocuMate® 4799 and 4790
Color
Simplex/Landscape (600 dpi)
Reference Scanner
Xerox DocuMate 4799
Scan Speed
37 seconds (1.85 sec/page)
77 seconds (3.85 sec/page)
RDO file size
139 MB
44.7 MB
142.4 MB
68.9 MB
66.6 MB
70.4 MB
Save as PDF with Xerox option
Save as PDF with Acrobat
option
Duplex/Landscape (600 dpi)
Reference Scanner
Xerox DocuMate 4799
Scan Speed
115 seconds (5.75 sec/page)
159 MB
110 seconds (5.5 sec/page)
84.1 MB
RDO file size
Save as PDF with Xerox option
64.6 MB
88.7 MB
Save as PDF with Acrobat
option
163.4 MB
85.9 MB
Summary
The Xerox DocuMate 4799 achieves fast scanning speeds for duplex (two-sided) black and
white and grayscale documents as a result of the Duplex Automatic Document Feeder (ADF),
which supports simultaneous two-sided scanning— and speeds, on average (simplex/duplex),
which are comparable to the Reference Scanner for color documents for most scanning
applications.
While not as efficient at transferring large amounts of data as the SCSI interface on the
Reference Scanner, the Hi-speed USB 2.0 interface on the DocuMate 4799 is suitable for most
scanning applications, offers the added convenience of plug and play and does not require
adding a separate controller board to the PC.
Saving files to PDF using the Xerox option produces noticeable larger file sizes for grayscale
documents and is not recommended.
Image Quality
A variety of industry standard test patterns and images were used to objectively evaluate the
Xerox DocuMate 4799 and its ability to accurately capture (and reproduce) fine detail (text
and line art), or shades of gray and different colors (color depth). Both the Xerox DocuMate
4799 and the Reference Scanner support 24-bit color depth and are capable of assigning one
of 16.8 million values to a color. For scanning monochrome or grayscale images, the Xerox
DocuMate 4799 supports 8-bit grayscale (1-bit black and white) while the Reference Scanner
supports 1-bit black and white.
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Xerox® DocuMate® 4799 and 4790
Performance and Image Quality
Note
In order to simulate grayscale (8 bits per pixel), the Reference Scanner captures halftone
images at 1 bit per pixel (black and white) and renders them using halftone screening at
different frequencies (lpi – lines per inch) based on the content of the document (fine or course
halftone) versus the Xerox DocuMate 4799, which renders a grayscale image at 8 bits per
pixel. As a result, the Xerox DocuMate 4799 is capable of reproducing images that more
closely approximate the original document
The captured digital images were then compared to equivalent scans (digital images)
obtained from the Reference Scanner, which served as the baseline, or reference for
comparison. The results of this comparison have been documented below. All scans were
captured independent of applying image enhancement software, which might otherwise
improve or enhance the appearance of the images during or post-capture.
Image Quality Evaluation1
Xerox DocuMate 4799
Assessment
Better reproduction (clarity) of fine text and
line art compared to the Reference Scanner
Black and White
Scans the image bi-
tonal, where everything
on the page is either
black or white
Not suitable for reproducing grayscale or
color graphics
Good overall reproduction of shades of
gray – variations from black at the weakest
intensity to white at the strongest, and Tonal
Reproduction Curve (TRC) – luminance, or
brightness of the image, compared to the
Reference Scanner
Grayscale
Scans the image using
varying shades of gray
to reproduce the
document
May experience Moiré (interference pattern
or artifact) in certain images
Acceptable overall reproduction of color
(color depth/balance), especially in highlight
areas compared to the Reference Scanner
Color
Scans the image in color,
creating a full color copy
of an original document
Acceptable Tonal Reproduction Curve (TRC)
– graduations of Cyan, Magenta, Yellow or
Black (CMYK) from 0 -100%, compared to
the Reference Scanner
Good reproduction (color and clarity) of fine
lines and color text compared to the
Reference Scanner
Light color text on light backgrounds may
appear fuzzy in certain color combinations
Overall
Fair Good Very Good
1 Compared to equivalent scans from the Reference Scanner
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Performance and Image Quality
Xerox® DocuMate® 4799 and 4790
Summary
The Xerox DocuMate 4799 is capable of reproducing color images suitable for most scanning
applications with acceptable results in comparison to the Reference Scanner. To achieve the
best results, Customers should ensure that they have the latest drivers, which can be
and Acuity Image Processing software.
The Xerox DocuMate 4799 achieves very good results for black and white (bi-tonal text and
line art), and acceptable results for grayscale scanning applications; producing captured
images that are, in some cases, comparable to the Reference Scanner. Black and white mode
should not be used to reproduce grayscale or color images.
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4 Support
4
Support for the Xerox DocuMate range of scanners is provided directly by Visioneer. All
DocuMate scanners come with US-based, toll-free technical support by contacting Visioneer at
1(800) 648-0410. Warranties are valid in the U.S. and Canada. An online Knowledgebase for
Note
If you require training and/or support for FreeFlow Makeready, or the Makeready Scan and
Print application, contact your local Xerox Analyst for assistance. The scope of support
provided by Visioneer for the Xerox DocuMate scanners as part of the initial installation is
limited to installing the scanner and device drivers, and performing a test scan to validate
operability.
Service/Maintenance Kits
Over time, all scanners require occasional cleaning and maintenance in order to keep the
product in good working order. Visioneer offers maintenance kits that may be purchased to
maintain the scanner. Each kit contains cleaning supplies, as well as replacement rollers, and
pads.
Frequent paper jams are a symptom of a worn roller assembly. A worn roller can cause
documents to feed in skewed at an angle, or multiple pages to feed at the same time. A worn
roller should be replaced to avoid damage to the scanner’s internal parts. Before replacing the
roller you should clean it as excessive dust on the roller will make it appear worn and smooth.
For questions regarding replacement parts or ordering information, refer to the scanner User’s
Guide or contact your local authorized Visioneer distributor.
FreeFlow Scanner Support
Comprehensive TWAIN support falls outside of the Xerox Field Service Maintenance
Agreement (FSMA). Issues found with FreeFlow Makeready and a supported Xerox DocuMate
scanner will only be addressed if they can be reproduced on a reference scanner available to
the Xerox Customer Support Center (XCSC).
In addition, the following limitations may apply when scanning from Makeready via a
supported Xerox DocuMate scanner and the TWAIN (version 1.9 or above) interface:
Image quality or performance-related problems are not supported
Optimization and targeting for a particular Xerox black and white or color printer is not
supported
The [Fit to output stock size] selection under [Reduce/Enlarge] in FreeFlow Makeready is
not supported
The input page size passed from the FreeFlow Makeready Scan and Print user interface
may not match Data Source capabilities and, thus, may not be effective. To choose an
exact input page size, customers should make a selection from the [Advance Scanning]
user interface
The [Rotate] selection under [Image Orientation] in FreeFlow Makeready is not supported
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Support
Xerox® DocuMate® 4799 and 4790
The following options in FreeFlow Makeready will be disabled if the parameter is not
supported by the data source:
[2 sides] selection under [Sides to Scan]
[Color] selection under [Mode]
[Scale to] selection under [Reduce/Enlarge]
[Brightness] slide control
For more information, refer to the FreeFlow Makeready 9.0 Customer Expectations Document
(CED).
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