Universal Laser Systems LaserKiosk User manual

LaserKiosk
Laser Engraving and Cutting System
Operation Manual
Manufactured by:
Universal Laser Systems, Inc.
16008 North 81st Street
Scottsdale, AZ 85260 USA
Phone: [phone]
Fax: [phone]
Web Based Email Support: www.ulsinc.com
October 2000

Notice
This publication and its contents are proprietary to Universal Laser Systems, Inc. (ULS), and are intended
solely for the contractual use of ULS, Inc. customers.
While reasonable efforts have been made to assure the accuracy of this manual, ULS shall not be liable
for errors contained herein or for incidental or consequential damage in connection with the furnishing,
performance, or use of this material.
ULS reserves the right to revise this manual and make changes from time to time without obligation by
ULS to notify any person of such revision or changes.
ULS does not assume any liability arising out of the application or use of any products, circuits, or
software described herein. Neither does it convey a license under its patent rights nor the patent rights of
others.
This publication and its contents may not be reproduced, copied, transmitted, or distributed in any form,
or by any means, radio, electronic, mechanical, photocopying, scanning, facsimile, or otherwise, or for
any other purpose, without the prior written permission of ULS.
ULS provides no warranties whatsoever on any software used in connection with a ULS Laser Engraving
System, express or implied. Neither does it guarantee software compatibility with any off-the-shelf
software package or any software program that has not been written by ULS.
Intended use of this system must be followed within the guidelines of this manual. In no event will ULS
be liable for any damages caused, in whole or in part, by customer, or for any economic loss, physical
injury, lost revenue, lost profits, lost savings or other indirect, incidental, special or consequential
damages incurred by any person, even if ULS has been advised of the possibility of such damages or
claims.
Windows is a registered trademark of Microsoft Corporation.
© Universal Laser Systems Inc., 2000
Written and Illustrated by Vince Budetti
All Rights Reserved

Introduction
Thank you for purchasing the LaserKiosk. Years of testing and refinements have made this unit
the ultimate compact and portable laser engraving and cutting system. With its very small
footprint design, large engraving area, incredible speed, and awesome power, the LaserKiosk is
the laser system of choice only by true professionals.
To begin with, we highly recommend that this entire manual be read before attempting to use
the laser system. The manual includes important information about safety, assembly, use, and
maintenance. We cannot over emphasize the importance of reading the Operation Manual
completely.
How To Get Help
Step 1:
Determine exactly what the problem is. Refer to the Troubleshooting Guide at the end of this
manual for a possible solution.
Step 2:
Try to recreate the problem and write down the circumstances in which the problem occurred.
Be prepared to describe all pertinent information about what is happening. Have the serial
number of the system available. The serial number tag is located on the side of the machine,
next to the parallel port connector.
Step 3:
Please contact us at:
Universal Laser Systems, Inc.
16008 North 81st Street
Scottsdale, AZ 85260
Phone: [phone]
Fax: [phone]
M-F 8am – 5pm Arizona Time
Step 4:
If you would like to contact us via our Web-based email support system, using your Internet web
browser, log on to our website: www.ulsinc.com. Click on the “Technical Support “ link. Then
click on the “Technical Support Request Form” and follow the instructions.

Table of Contents
SECTION 1 – General and Laser Safety
Description of Appropriate Use ........................................................................................1-1
General Safety .................................................................................................................1-1
Laser Safety .....................................................................................................................1-2
Safety Labels ...................................................................................................................1-2
Safety Label Locations.....................................................................................................1-3
EU Compliance (CE)........................................................................................................1-5
FCC Compliance..............................................................................................................1-6
SECTION 2 – Installation and Assembly
Operating Environment ....................................................................................................2-1
Electrical Requirements ...................................................................................................2-1
Laser Module Cooling Requirements...............................................................................2-2
System Assembly.............................................................................................................2-2
Laser Cartridge Installation ..............................................................................................2-4
Computer Module.............................................................................................................2-6
SECTION 3 – System Operation
AC Input Power ................................................................................................................3-1
DC Power Supply.............................................................................................................3-1
Computer Module.............................................................................................................3-1
CPU..................................................................................................................................3-1
Control Panel ...................................................................................................................3-2
Laser Cartridge ................................................................................................................3-2
Motion System .................................................................................................................3-3
Material Applications ........................................................................................................3-4
Filter Module ....................................................................................................................3-4

SECTION 4 – Using the LaserKiosk Step-by-Step
Powering ON the LaserKiosk...........................................................................................4-1
Using the Software...........................................................................................................4-1
Choosing the Material .........................................................................................4-1
Creating the Graphic ...........................................................................................4-2
Installing Logos ...................................................................................................4-2
Loading the Material into the LaserKiosk............................................................4-2
Focusing the Laser Beam ...................................................................................4-2
Printing to the LaserKiosk ...................................................................................4-2
Starting the Engraving Process ..........................................................................4-2
Material Removing ..............................................................................................4-3
Material and Machine Usage Tracking ............................................................................4-3
SECTION 5 – Maintenance
Suggested Cleaning and Maintenance Supplies .............................................................5-1
System Cleaning ..............................................................................................................5-3
Optics Cleaning................................................................................................................5-3
Z-axis Table Removal ......................................................................................................5-5
Exhaust Plenum Cleaning................................................................................................5-6
Adjustments and Lubrication............................................................................................5-6
Electronic Upgrading........................................................................................................5-6
Battery Replacement........................................................................................................5-7
Cooling Fan Filter(s).........................................................................................................5-7
Filter Module ....................................................................................................................5-8
Maintenance Schedule.....................................................................................................5-8
Appendices
Warranty..............................................................................................................................A
Specifications ......................................................................................................................B
Troubleshooting Guide........................................................................................................C
How To Get Help.................................................................................................................D

SECTION 1
Safety
This section describes hazards that may occur if the laser is
installed or used improperly.
WARNING: Failure to follow these guidelines can result in injury to yourself, others, or
may cause severe damage to the equipment and your facility. Use of the equipment in a
manner other than what is described in this manual may increase this risk. Operation
and care of the laser must be followed in strict accordance to this manual.
Description of Appropriate Use
This device is designed for laser cutting and engraving of the materials listed in the Laser
Personalization and Identification catalog of engraveable materials. This equipment must be
properly installed and connected to the Exhaust Module included with the system.
General Safety
•Exposure to the laser beam may cause physical burns and can cause severe eye damage.
Proper use and care of this system are essential to safe operation.
•Never operate the laser system without constant supervision of the cutting and engraving
process. Exposure to the laser beam may cause ignition of combustible materials and start a fire. A
properly maintained fire extinguisher should be kept on hand at all times.
•A properly configured, installed, maintained, and operating Exhaust Module is mandatory
when operating the laser system. Fumes and smoke from the engraving process must be
extracted and filtered from the Laser Module.
•Unapproved materials, if engraved or cut with a laser, can produce toxic and caustic fumes.
DO NOT use materials other than those found in the Laser Personalization and Identification catalog.
Processing unapproved material may be a safety hazard and may also cause chemical deterioration
of the laser system such as rust, metal etching or pitting, peeling paint, etc. Systems damaged from
this abuse will NOT be covered under warranty.

1-2 Safety
•Dangerous voltages are present within the electronics and laser enclosures of this system.
Although access to these areas is not necessary during normal use, if it becomes necessary to open
one of these enclosures for service reasons please remember to disconnect the power cord from your
electrical supply.
•Care should be taken when moving or lifting this device. Obtain assistance from 1 or 2 additional
people when lifting or carrying. Severe bodily injury may occur if improper lifting techniques are
applied or the system is dropped.
•This device is specifically designed to comply with CDRH performance requirements under 21
CFR 1040.10 and 1040.11. CDRH is the Center for the Devices of Radiological Health division of the
Food and Drug Administration (FDA) in the USA. It also complies with CE (European Community)
safety regulations. No guarantees of suitability or safety are provided for any use other than those
specified by Universal Laser Systems, Inc.
Laser Safety
•The device contains a sealed carbon dioxide (CO2) laser in a Class I enclosure that produces intense
invisible and visible laser radiation at a wavelength of 10.6 microns in the infrared spectrum. For your
protection, this enclosure has been designed to completely contain the CO2 laser beam. However,
the intense light that appears during the engraving or cutting process is the product of material
combustion or vaporization. DO NOT STARE AT THE BRIGHT LIGHT OR VIEW DIRECTLY WITH
OPTICAL INSTRUMENTS.
•The Top Door and the Laser Cartridge Access Door are safety interlocked and will disable the
invisible CO2 laser beam from firing when the either door is opened.
•Do not operate any system that has had its safety features modified, disabled, or removed as this can
expose your eyes and skin to invisible and visible CO2 laser radiation which can cause permanent
blindness and/or severe burns to your skin.
•Improper use of controls and adjustments, or performance of procedures other than those specified in
this manual, may invalidate the safety of this system.
Safety Labels
CDRH and CE regulations require all laser manufacturers to affix warning labels in specific
locations throughout the equipment. The following warning labels are placed on the laser
system for your safety. DO NOT remove them for any reason. If the labels become damaged
or have been removed for any reason, DO NOT OPERATE the laser system and immediately
contact Universal Laser Systems, Inc. for a free replacement. Labels shown are NOT to scale

Safety 1-3
221-0004-0
Class 1 CO2 Laser System Manufactured By :
SERIAL #: 02500A
DATE : MAY 2000
221-0007-0 221-0012-0
221-0015-0 221-0016-0
DANGER
INVISIBLE AND VISIBLE LASER
RADIATION WHEN OPEN
AVOID EYE OR SKIN EXPOSURE TO
DIRECT OR SCATTERED RADIATION
221-0017-0 221-0018-0
!
WARNING
TURN THE LASER SYSTEM OFF BEFORE
CONNECTING OR DISCONNECTING
THE ROTARY FIXTURE
221-0019-0
221-0020-0 221-0021-0
221-0031-0

1-4 Safety
Safety Label Locations
221-0056-0
INPUT POWER:
110 VAC; 50/ 0 Hz; 15 A
221-0023-0
INPUT POWER:
220 VAC; 50/ 0 Hz; 10 A
221-0018-0
221-0004-0
221-0012-0
221-0015-0
221-0022-0
221-0036-0
221-0016-0
221-0016-0
221-0020-0
221-0021-0
221-001 -0
221-0007-0
221-0031-0
221-0017-0
221-0044-0
221-0045-0
221-004 -0
221-0047-0
221-0048-0
221-0049-0
221-0050-0
221-0051-0
221-0018-0

Safety 1-5
EU Compliance (CE)
Product Identification: LaserKiosk Laser Engraving and Cutting System
Manufacturer: Universal Laser Systems, Inc.
16008 N. 81st St.
Scottsdale, AZ 85260
Phone: [phone] Fax: [phone]
USA
This equipment Is manufactured in conformity with the following directives:
89/336/EEC (EMC Directive)
73/23/EEC (Low Voltage Directive)
89/392/EEC (Machinery Directive)
based on the standards listed.
Standards Used:
Safety:
EN 60950: 1995
EN 60825: 1994 (Class IIIa)
EMC:
EN 55022: 1995 (Class A)
EN 50082-1: 1992
EN 60801-2: 1993 (6kV CD, 8kV AD)
EN 61000-3-2: 1996 (class A)
EN 61000-3-3: 1995
EN 61000-4-3: 1997 (3 V/m)
EN 61000-4-4: 1995 (2 kV power line, 0.5 kV signal line)
EN 61000-4-5: 1996 (class 2)
Warning - This is a Class A product. In a domestic environment this product
may cause radio interference in which case the user may be required to take
adequate measures.
L A S E R S Y S T E M S
I N C
.

1-6 Safety
FCC Compliance
This ULS laser system has been tested and found to comply with Federal Communication Commission
(FCC) directives regarding Electromagnetic Compatibility (EMC). In accordance with these directives ULS
is required to provide the following information to its customers.
FCC Compliance Statement and Warnings
This device complied with FCC Rules Part 15. 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.
This equipment has been tested and found to comply with the limits for a Class A digital device as set
forth in Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with
manufacturer’s instructions, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his or her own expense.
Users should be aware that changes or modifications to this equipment not expressly approved by the
manufacturer could void the user’s authority to operate the equipment.
This equipment has been type tested and found to comply with the limits for a Computing Device per FCC
part 15, using shielded cables. Shielded cables must be used in order to insure compliance with FCC
regulations.

SECTION 2
Installation
Proper operating conditions are vital to a safe and productive
environment. This section describes the ideal environment and setup of the laser system. Failure to
operate the laser system within these guidelines can seriously damage the laser system and may cause
an unsafe operating environment. Although conforming to these guidelines will greatly reduce the chance
of a problem occurring, it does not guarantee it. It is your responsibility to provide a safe and proper
operating environment.
Operating Environment
•Ambient room temperature MUST be between 50 and 95 degrees F (10 and 35 degrees C). The
Laser Cartridge is equipped with a special temperature sensor that detects if the ambient
room temperature is not within specifications and will prevent the Laser Cartridge from
emitting a laser beam until proper room temperature is achieved.
•Ambient room dewpoint temperatures MUST be less than 50 degrees F (10 degrees C).
•Avoid dusty or dirty air environments that can damage the laser system. Also, keep the laser system
isolated from any type of sandblasting, sanding, grinding, milling, sawing, or any other machinery that
produces airborne particles or caustic fumes.
•Provide a worktable or storage area next to or nearby the system. This prevents the operator from
using the system as a table or storage facility.
Electrical Requirements
•Refer to the “INPUT POWER” sticker near the system’s ON/OFF switch and power inlet for your
system’s electrical requirements. Make sure that your electrical outlet is capable of providing the
proper voltage, frequency and amperage that your laser system needs.
•Noisy or unstable electricity as well as voltage spikes can cause interference and possible damage to
the electronics of the laser system. It may be necessary to connect the laser system to a dedicated
electrical line if this is a problem.
•If electrical power fluctuations, brown outs, or constant power outages are a problem in your area, an
electrical line stabilizer, UPS (Uninterruptible Power Supply), or backup generator might be required.
If installing any of these devices, make sure that they meet the electrical requirements of the laser
system.

2-2 Installation
•Never remove the ground lead to the electrical cord and plug the system into a non-grounded
outlet. This is very dangerous and can lead to a severe, if not fatal, electrical shock. Always plug the
system into a 3 prong grounded outlet.
•Do not operate the laser system near devices that emit high levels of radio frequency
(RF) emission. High levels of RF will interfere with the operation of the laser system and
can damage your system or seriously effect engraving or cutting quality.
If the above requirements cannot be met, you may need the services of a qualified, licensed electrical
contractor to certify your installation. Remember, it is your responsibility to provide a quality electrical
source. Damages to the laser system due to neglect, abuse, or improper or unsuitable electrical
supply will not be covered under warranty.
Laser Module Cooling Requirements
The Laser Module uses fans to keep the Laser Cartridge and electronics cooled during
operation. Maintaining the proper ambient temperature, as outlined previously in the Operating
Environment section, is essential to proper and reliable operation.
WARNING: Do not confine the back of the machine by surrounding it with
furniture, shelving, backing it into a corner, etc. The backside of the laser system
must be allowed to “breathe” otherwise the Laser Cartridge, Power Supply,
and/or the CPU may overheat which can cause serious and very costly damage
to the system and may invalidate your warranty.
System Assembly
•Remove all materials from the shipping container.
•Place the Filter Module on a level surface. Press
down on the locking tabs of the two front casters to
prevent it from rolling (1).
•Make sure the circular handle on the side of the Filter
Module is pointing vertically(2).
•With the assistance of another person, pick up the
Laser Module (3) noting that there are four (4)
alignment feet on the bottom. Keeping it balanced,
guide the feet of the Laser Module into the holes in the
top of the Filter Module
(1)
(2)
(3)

Installation 2-3
•Open the Computer Module storage compartment
door by pressing the round button on the latch (1)
and pulling it open. Remove any packing
materials.
•Locate and plug in the Power Cord (2).
•Turn the circular handle clockwise until it engages
and rests in a horizontal position (3). This clamps
and electrically connects the Laser Module to the
Filter Module.
•Note the two notches in the mounting plate (4)
that the Computer Module will attach to.
•Gently place the Computer Module upside down
on a clean surface.
•Lift the support plate up (1) until it stops.
•Locate the two pins on the side of the module
(2).
•Turn the Computer Module right side up and
securely affix the two pins into the mounting plate.
•Connect the Printer Cable from the Computer
Module to the Laser Module next to the serial tag.
•In the front of the system, locate the two button
latches. Press on the circular buttons (1) until
the latch pops out.
•Grasp the latch and gently fold the access panel
down to the floor.

2-4 Installation
•Locate the Pre-Filter (1), the Main Filter (2) (may
or may not be pre-installed), the Vacuum Motor
attachment thumbscrews (3) and the Vacuum
Motor (4). If the Main Filter is not installed, locate
the filter, remove the plastic wrapping, and slide it
into the Filter Module, as far as it will go, with the
Red Arrow pointing straight up. The Filter Module
will not operate if the Red Arrow is not pointing
straight up.
•Close the door and secure the latches.
Laser Cartridge Installation
•With your finger, press the circular button on the
latch and it will pop out.
Gently fold the rear cover up and over the top door.
Visually locate the two Mounting Blocks, the Laser
Latch, and the Alignment Fork. Locate the small
notch in the Alignment Fork.
•Observe the “V” groove along the upper and
lower part of the Laser Cartridge. Also locate
the Alignment Plate at the end of the Laser
Cartridge.
1) Mounting Blocks
2) Laser Latch
3) Alignment Fork
1) Upper V-groove
2) Lower V-groove
3) Alignment Plate

Installation 2-5
•Pick up the Laser Cartridge by the sides. Tilt the
Laser Cartridge downward on a 30-degree angle.
Mount the cartridge onto the Mounting Blocks by
placing the upper “V” groove of the cartridge on
top of the Mounting Blocks. Slide the cartridge to
the right until the Alignment Plate of the Laser
Cartridge makes contact with the inside of the
large protruding plate of the Alignment Fork.
•Slowly rotate the Laser Cartridge making sure
that the Alignment Plate is centered in the small
gap of the Alignment Fork. And the Laser Latch
“clicks” and locks the cartridge into place. It may
require some slight force to actuate the latch.
•Verify that the Laser Cartridge is resting, at a
90-degree angle, and the Alignment Plate is
centered within the Alignment Fork.
•Plug in the Power Connector. The connector is
keyed so it will only insert one way.
•Close the Rear Cover and push down on the
latches until they “click.
Close-up view of small gap

2-6 Installation
•Open the Top Door of the Laser Module. Remove any packing material from within the
engraving area. Remove the rubber band that retains the X-axis arm.
•Plug in the Power Cord into your electrical supply. The entire system, the Laser Module,
Filter Module, and the Computer Module are all powered through this cord.
Computer Module
The Computer Module consists of a laptop computer attached to a removable platform. The computer is
pre-loaded with the software needed to run the LaserKiosk. When you power ON the computer, the
LaserKiosk software automatically starts up. From that point on, simply follow the on-screen instructions.
WARNING: Never connect or disconnect the printer cable while either
the Computer Module or the Laser Module is powered ON. Always
power OFF both the Laser Module and the Computer Module when connecting
or disconnecting the printer cable.

SECTION 3
System Operation
This section describes how the system functions and will familiarize
you with laser terminology. Think of the LaserKiosk as just another output device such as a laser printer,
dot matrix printer, or plotter. In fact, the LaserKiosk utilizes certain characteristic from each of those
output devices.
(1) AC Input Power
(2) DC Power Supply
(3) Computer Module
(4) CPU
(5) Control Panel
(6) Laser Cartridge
(7) Motion System
(8) Application Material
(9) Filter Module
(The dotted
box
represents
the Laser
Module)
1) AC Input Power
The operator must provide a suitable AC Input Power source and electrical grounding circuit.
Refer to the section on “Electrical Requirements” for a complete description of what is
necessary to operate the LaserKiosk.
2) DC Power Supply
The internal DC Power Supply converts the incoming AC electricity to 48 volts DC used to power both the
Laser Cartridge and the CPU. It is not user serviceable nor requires maintenance.
3) Computer Module
The Computer Module consists of a laptop computer attached to a removable platform. The computer is
pre-loaded with the software needed to run the LaserKiosk. When you power ON the computer, the
LaserKiosk software automatically starts up. From that point on, simply follow the on-screen instructions.
4) CPU
The CPU is the “brains” of the system and controls everything. When the system is first powered ON, it
goes through an initializing procedure and then “homes” the motion system (moves to the upper right
corner of the engraving area so that the X and Y home sensors can detect its physical position). After the
“homing” procedure is complete, it is ready to receive a file from the Computer Module.
Once the “START” button is pressed the CPU starts the Motion System movement, which places the
Focus Carriage (part of the motion system that contains the Focus Lens) above the designated engraving
or cutting area. The CPU then sends signals to the Laser Cartridge to precisely control the firing of the
laser beam with the movement of the motion system. Once the file is complete, the Focus Carriage will go
“home” to the upper right corner.
I2
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3-2 System Operation
5) Control Panel
This is where the operator controls the laser system.
START: The LaserKiosk software will inform you
when it is OK to press the START button. Pressing the START button will begin laser processing.
STOP: Pressing the STOP button will halt the engraving or cutting process.
STOP + START: Press and hold the STOP button then press the START button. This button
sequence clears the Laser Module's file memory and re-homes the X, Y, and Z-axis.
GREEN LIGHT
System is powering ON
System is running a file
Flashing
File is being downloaded to system
ON Entire file is in memory indicating that transfer is complete
OFF File has finished processing
6) Laser Cartridge
The Laser Cartridge is a very sophisticated device. It is composed of a gas filled plasma tube containing
a special mixture of CO2 and other gases, two electrodes, and RF (radio frequency) electronics. The
function of the entire assembly is to turn electrical energy into concentrated light energy. The word
LASER is an acronym for Light Amplified Stimulated Emission of Radiation.
(1) Gas filled plasma tube
(2) Electrodes
(3) RF Power Supply
(4) #1 Mirror
(5) Beam Window
(6) Beam diameter
(7) #2 Mirror
(8) #3 Mirror
(9) Focus Lens
(10)Focal length
(11)Focal range
(12)Material
(13)Spot size
STOP
START
®

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System Operation 3-3
The Laser Cartridge receives power from the 48VDC power supply and its “trigger signal” from the CPU.
When the trigger signal comes from the CPU, the RF electronics produce a high frequency signal across
the electrodes located inside the plasma tube. This causes spontaneous photon emissions from the gas
mixture that produces an invisible, infrared light beam at a frequency of 10.6 microns.
The CO2 laser beam exits the Laser Cartridge through its output optics, reflects off the #1 Mirror, passes
through the Beam Window, reflects off the #2 and #3 Mirrors, to finally pass through the Focus Lens. The
#2 and #3 Mirrors and the Focus Lens are all mounted to the Motion System. The width of the laser
beam as it exits the tube, called the “Beam Diameter”, is about 4 mm in diameter. The Focus Lens
focuses the beam into a very small spot whose “Spot Size” is dependent on the “Focal Length” of the
lens. The “Focal Length” is the distance from about the center of the lens to the point where it converges
the beam into the smallest spot possible. The laser system is equipped with the 1.5-inch Focal Length
lens. It creates a nominal spot size of around .003 inches (.08 mm).
The term “Wattage” signifies the amount of heat energy that the laser light is producing measured over a
period of time. Laser beam wattage is measured with a laser power meter. Do not confuse the electrical
wattage rating of a light bulb or a hair dryer with the wattage rating of the laser system.
7) Motion System
The motion system consists of the mechanically moving parts of the laser system. It is made up of rails,
motors, bearings, belts, mirrors, a lens, home sensors, and other parts. There are two directions of
motion, left and right is called the “X-axis”, front to back is called the “Y-axis”, and the movement of the
engraving table up and down is called the “Z-axis”.
(1) X-axis Rail (Arm)
(2) X-axis Motor and Drive Gear
(3) X-axis Bearings
(4) Focus Carriage
(5) X-axis Belt
(6) X-axis Idler Pulley
(7) #2 Mirror
(8) #3 Mirror and Focus Lens
(9) Y-axis Bearing(s)
(10) Y-axis Rail(s)
(11) Y-axis Motor
(12) Y-axis Belt
(13) Y-axis Idler Pulley(s)
(14) Y-axis Drive Gear(s)
(15) Y-axis Shaft(s)
The CPU controls the movement of the motors, which moves the mirrors and Focus Lens across the
engraving area and over the material. At the same time, it is synchronizing the laser
pulses that produces the highest quality and fastest speed of engraving.