Techkon SpectroDens User manual
Manual
Spectro-Densitometer
SpectroDens
Software
SpectroDens Connect
TECHKON
TECHKON manuals, technical documentation and programs are copyrighted. Reproduction,
translation or transfer to an electronic medium – in whole or in parts – is prohibited.
TECHKON software is the intellectual property of TECHKON GmbH. Purchase of the soft-
ware grants the user a license for the use on one computer only. Programs may only be copied
for back-up purposes.
TECHKON can not be held liable for any damages that may occur by the use of TECHKON
products.
The TECHKON team takes great care in producing this manual. Nevertheless, we can not fully
guarantee the complete absence of errors.TECHKON GmbH and the authors can not be held
liable neither for any possibly incorrect statements nor their consequences.
Product that are not made by TECHKON GmbH are mentioned for information purposes only
and such statements do not represent trademark infringement. All registered trademarks are
recognized.
TECHKON products and product names are registered internationally under several intellec-
tual patents and trademarks.
Specifications can be subject to change without notice.
Version 2.3, May 2009
You can reach us at the following address:
TECHKON GmbH
WiesbadenerStr.27•D-61462Königstein/Germany
Telephone:+49(0)6174924450•Telefax:+49(0)6174924499
E-mail:info@techkon.com•http://www.techkon.com
Welcome
We welcome you among the worldwide community of users of TECHKON products.
We are happy that you have selected this high-quality measurement instrument. It will
be a valuable tool for your day-to-day quality control tasks.With this manual we invite
you to learn how to use SpectroDens.
The manual is divided into three chapters:
Chapter1: HowtouseTECHKONSpectroDens
Chapter 2: Description of measurement functions
Chapter 3: How to use the Windows software SpectroDens Connect
FortherststepswerecommendtoreadchapterI;inparticularparagraph1.4.
You will be fascinated that after only ten minutes you will know how to work with
SpectroDens.The second chapter will show you detailed insight into the measure-
ment functions and chapter 3 is about the Windows software SpectroDens Connect,
which is part of the package.
Please get the device registered by using the detachable registration card, which is the
last page of this manual. That way we can keep you updated about product news.
Pleasevisitusaswellontheinternetathttp://www.techkon.com.
You will find useful information about the complete product range and new software
versions.
Do you have any suggestions for improvements or do you require information that
goes beyond the contents of this manual? We will be glad to hear from you. Your sug-
gestions or questions make an important contribution to the continuous optimization
of our documentation and products.
Your TECHKON Team
Content
Chapter1: HowtouseTECHKONSpectroDens
1.1 Productdescription........................................................................ 5
1.2 Packinglist ........................................................................................ 8
1.3 DesignofSpectroDens.................................................................. 9
1.4 WorkingwithSpectroDens.......................................................... 11
1.5 Careandmaintenance ................................................................... 19
Chapter 2: Description of measurement functions
2.1 MeasurementfunctionsofSpectroDensBasic......................... 26
2.2 Additional functions of SpectroDens Advanced ...................... 33
2.3 Additional functions of SpectroDens Premium........................ 44
2.4 Storageofmeasurementvalues................................................... 55
2.5 GrayGuidefunction(US-versiononly) ..................................... 58
Chapter 3: How to use the Windows software SpectroDens Connect
3.1 Softwaredescription ...................................................................... 64
3.2 Installation......................................................................................... 64
3.3 Overview .......................................................................................... 65
3.4 Softwaremodule“SpectroDenssettings” ................................. 66
3.5 Deviceupdateanddeviceupgrade ............................................. 67
3.6 Softwaremodule“Export”............................................................ 68
3.7 Optionalsoftwaremodule“SpectroCheck”............................. 69
3.8 Optionalsoftwaremodule“ColorCatcher” ............................. 70
3.9 Optionalsoftwaremodule“PhotoLab”...................................... 71
3.10Optionalsoftwaremodule„MediaWedge“............................... 74
Appendix:
Technical specifications
Manufacturer certificate
Registration card
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDens Page 5
Chapter 1
How to use TECHKON SpectroDens
1.1 Product description
SpectroDens is an all-purpose, modern measurement device.Whether it be in pre-
print for verifying proofs, for ongoing quality control at the printing press, during
delivery inspection of paper and print products or in a color lab, SpectroDens is
exceptionally suitable, whatever the application is.Thanks to the individually adjustable
display functions, you can quickly set up the device for your particular job.
The product name alone suggests the multiple uses of the device. As a spectro-densi-
tometer, SpectroDens combines the qualities of a highly accurate spectro-photometer
and an easy-to-use densitometer. Measurement is spectral, i.e. the entire color infor-
mation – the spectral fingerprint of the color – is precisely registered. The measured
spectral data is converted into measurement data for descriptive analysis and display:
• Densitometric data is widely used in quality control
during the printing process.
• Colorimetric data is used in the evaluation of print proofs,
the creation of color profiles in color management and the
color matching and formulation of inks.
The device works strictly according to the standards valid for the graphic industry.
Select different status filters for density measurement among the device settings.
A special technical feature is the polarization filter which can be activated via the
push of a button.
The SpectroDens Connect software supplied with the device explicitly displays
measurement data on a computer monitor. Measurement data can be transferred into
Microsoft Excel or other applications.The integrated color library is especially easy
to use. For example, you can load complete “digital color books” into the device.The
software also serves as the connecting module for other applications, e.g. programs
for the production of characteristic printing curves or colorimetric quality control.
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDensPage 6
All advantages of TECHKON SpectroDens at a glance
• High-qualityspectralengine
• Patentedmeasurement
head for exact and
direct positio-
ning
•Exchangeableaper-
tures even for the
smallest measurement
patches
• Quickmeasurement
(approximately 1 second)
• Durableprecision
• Insertablepolarization
filter by push of a button
• ConformtoISOandDINstandards
• Exceptionallysuitableformeasurementof
the Ugra/Fogra media wedge
• Absolutewhitestandardintegratedandprotected
in charging console
• Rechargeable, high-capacity batteries with quick recharge
power management on practical charging console for
up to 10.000 measurements per battery charge
•Large,high-resolutionclearcontrastinggraphicdisplay
•USB-portforeasytransferofmeasurementdata
to a PC and for download of additional functions
and device upgrades via PC
•Allmeasurementfunctionseasilyselectable
•Customcongurationdependingon
application, self-explanatory operation
•Automaticmeasurementfunction
displays always the relevant values
•Ergonomicallypositioned,user-
friendly measurement button
•Measurementvaluescan
be memorized with
date and time tag
•Handyandcompact
•Lowweight
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDens Page 7
Three different performance packages
SpectroDensisavailableinthreetypesofperformancepackages:ThemodelBasic
with the essential density functions, the Advanced version which adds extended
densitometry functions, colorimetry and a color library and as the flagship model
the comprehensive Premium device. The devices can be upgraded by post-purchase
to higher performance levels by program upload using the software SpectroDens
Connect.
The following features are part of the three different models:
SpectroDens Basic
• Automaticdensity
• DensitiesCMYK(withreferencevalues)
• Dotarea
• Dotgain
• Printcontrast
• Grayandcolorbalance
• InktrappingtoPreucil
SpectroDens Advanced
asSpectroDensBasic,butalsofeatures:
• Characteristicprintingcurve
• Printingplatemeasurement(dotareatoYule-Nielsen)
• Sluranddoublingvalue
• Spectraldensityforspotcolors
• TrendfunctionExPressoMini
• Densityspectrum
• InktrappingtoBrunnerandRitz
• CIEL*a*b*,CIEcolorcircle,CIEXYZ,ΔE*a*b*
• Remissioncurve
• Colorlibrary
• GrayGuideaccordingtoGracolG7™(US-versiononly)
SpectroDens Premium
as SpectroDens Advanced, but also features:
• ISO-Check:accordingtoISO12647
• InkCheck(ColorGuide):evaluationofspotcolors
• CIEL*C*h*ab,CIEL*u*v*,CIEL*C*h*uv,CIExyY,DINLab99
• ΔE cmc, ΔE*CIE94,ΔE*CIE2000
• Metameryindex
• Whiteness,yellowness
• Pass/Failtolerance,average
• Ugra/Fogramediawedgeevaluation
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDensPage 8
The carrying case protects SpectroDens and
parts
1.2 Packing list
Contents of delivery:
• MeasurementdeviceSpectroDens
• Carryingcase
• Chargingconsolewithintegrated
absolute white standard
• ACadapterwithuniversalplugs
for Europe, UK and USA
• ThismanualwithISO9000certicate
• USB-cableforPCconnection
• CDwithWindowssoftware
SpectroDens Connect
(the CD is attached on the last page
of this manual)
Optional accessories:
• Exchangeableaperturesofsmallsizeforsmallmeasurementpatches
• ExchangeableaperturewithUV-Cutlterformeasuringuorescendingsamples
• PrintControlStripTECHKONTCS
(the Digital Print Control Strips TECHKON TCS can be downloaded free of
charge at http://www.techkon.com
• DeviceupgradesfortheBasic-orAdvanced-modelstohigherfunctionality
• AdditionalsoftwaremodulesforSpectroDensConnect:
Colorqualitycontrol“PhotoLab”and“Ugra/Fogramediawedgeevaluation”
• ColorreferenceSpectroCheck
• Replacementparts:
Charging console with white standard, rechargeable battery, measurement lamp.
All parts are separately available and easy to exchange.
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDens Page9
1.3 Design of SpectroDens
SpectroDens is a solidly designed measurement device which is very functional and
easytouse.Itiscompactinsize;thebuttonscanbereachedwiththerightindexn-
gerwhenthedeviceisheldwiththerighthand.TheLCDdisplayisinclinedtowards
the user, so the display information can be read clearly.
SpectroDens can be easily positioned on the measurement sample.
The device incorporates a high-resolution spectral sensor which analyzes the color
spectrum of the measured sample. The spectral data is the base information for calcu-
lating densitometric and colorimetric data which is displayed. Densitometric values
can be solid density, dot area, dot gain or trapping values. Colorimetric values are
typicallyCIEL*a*b*-orΔE*-colorinformation.
TheUSB-connectorisforlinkingwithaPC.TheUSB-cablewithaMini-USBplug,
which fits into the connector at the back of the device, is part of the package.
Charging contacts
Device base
Batterycase
USB-connector
for PC connection
Navigation buttons
Right hand
grip zone
Exchangeable
measurement
aperture
Device label with
serial number
Measurement
head
Greenmeasurement
button (also for
switching on)
Device display
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDensPage 10
The charging console incorporates an absolute white standard which is protected
against light and dust. Turning the black wheel releases the white standard from the
protected position.
The ceramic white standard should not be touched and should always be kept clean.
Therefore we recommend to keep it in the protected position and only to turn it out
during the calibration procedure.
The above image shows how to connect the plug of the AC adapter with the charging
console.TheACadaptercanbeuseduniversallyfor100–240Vand47–63Hz.
Use only the original TECHKON SpectroDens AC adapter.The use of other power
sources is hazardous!
There are three adapter plugs for different countries.To change an adapter plug, just
pull it off the AC adapter and push in the new one. Make sure it is connected firmly!
AC adapter with three different mains plugs Device in the state of charging
UK
USA
Europe
1.
2.
3.
1. The black wheel can be turned to bring
the protected absolute white standard in
position for the calibration procedure.
2. Chargingcontacts
3. Lowvoltageconnectorfortheplugofthe
AC adapter
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDens Page 11
1.4 Working with SpectroDens
Switching on and off
SpectroDens is switched on by pressing the green measurement button.
Itisimmediatelyreadytomeasure.Inthisstatepowerconsumptionisverylow.
Ifnobuttonispressedwithinveminutes,thedevicewillswitchoffautomatically.
Switching it on again with the green measurement button will show on the display the
last measurement done.There is no button to turn SpectroDens off.
Sincehardware-version2thedisplayisprovidedwithbacklightwhichturnsonauto-
matically when the device is started.
Charging
The battery status is displayed as a battery symbol in the lower left corner of the
LCDscreen,whentheunitisturnedon.
Whenthebatteryturnsempty,thebatterysymbolstartstoash.Inthisstateseveral
measurementsstillcanbeobtained;butitistimetoputitonthechargingconsoleto
avoid a total discharge and damage of the battery.
Charging starts automatically by placing the device on the charging console. Please
keep the charging contacts on the console and under the device always clean.
Ifoxidized,useaspecialmetalcontactcleaner.
Five seconds after placing the device on the console the display will show a clock and
an animated battery symbol.When the symbol displays a full battery, the charging is
completed and the battery is fully charged. Completely charging an empty battery will
take approximately four hours.
SpectroDens has a regulated charging management. This means it will power-charge
an empty battery, so the device can be used again after a few minutes. On the other
hand,thereisnooverchargingoffullbatteries.Youcanparkthedeviceonthecharg-
ing console when not in use.This way it is guaranteed to have always an operational
measurement instrument at hand.
Up to 10.000 measurements can be carried out with one battery charge.
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDensPage12
How to measure
After switching on SpectroDens, it is instantly ready to measure. Just position the
measurement aperture on top of the measurement sample and press shortly with
the index finger the green measurement button. Within one second the resulting
measurement value will appear on the display of the device.
Please ensure that the device always has a firm stand on a flat surface. There must
not be a distance between the measurement head and the sample where light could
pass through, because this can influence the measurement. On the bottom of the
device there are anti-slip rubbers which prevent the device from being moved during
a measurement.
The color of the background material underneath the measurement sample can have
an influence on the measurement result. Different technical standards describe which
backingmaterialtouse.Intheprintingindustrythefollowingprocedureiswidely
used: White backing for single printed papers and black backing for double printed
sheets in order to avoid that the back printed side might shine through the paper and
influence the measurement.
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDens Page13
The center of the display shows the current
measurements.
1. Reference measurement
2. Samplemeasurement
3. Calibration
4. DELTA-mode(=forcomparisons)
5. Average function
(only SpectroDens Premium)
6. Color library
(only SpectroDens Advanced / Premium)
7. Device settings
8. Measurement conditions
9. Measurementfunctions
10.Batteryandchargingstatus
1.2.3.
4.
5.
6.
7.
9.8.
10.
Device settings with the display menu
Thanks to the interactive device menu, settings are very easy to adjust. The display
is divided logically into a center and a frame.The center displays the measurement
results.Itisframedbyinteractive“soft keys” and status information displays.
Pressing shortly on one of the Arrow buttons will move an active cursor from
“soft key” to “soft key” around the frame. An active “soft key” is indicated by inverse
appearance, except for the items “Reference” and “Sample” which just open up to
thecenterwindow,whenselected.BykeepinganArrowbuttonpressed,thecursor
travels from “soft key” to “soft key” at a constant speed until the Arrow button is
depressed again.
BypressingtheEnter button a function behind a “soft key” is selected and a select-
able menu appears.Within such a menu again the navigation is done via the Arrow
buttons and the selections are made with the Enter button. Some menu items or
“soft keys” might be shaded in appearance and can not be selected, because they are
only active in a higher performance package (Advanced or Premium) of SpectroDens.
Pressing the red, round Escape button will always bring you one step back in the
menuorwillcloseamenuwindow.ItcanbecomparedtotheEscapebuttonor
Undo-functiononaPC.Itwillalwaysbringyoubacktothemeasurementmode.
1. Escape button
2. Arrowbuttons
3. Enterbutton
1.
2. 3.
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDensPage14
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
2. Sound will activate an acoustic signal
after each measurement.
3. WithactivatedAutomatic Paper
White Calibration SpectroDens will always
perform automatically a paper white calibra-
tion when a measurement on a paper white
is made.
We recommend to deactivate this function
and instead to intentionally perform calibra-
tions with the calibration function.This way
you always know that a calibration is per-
formed properly.
1. The SpectroDens INFO screen shows
thetypeofdevice(Basic,AdvancedorPre-
mium), the software- and hardware-version
as well as the serial number.
Menu: Device settings
The “soft key” with the tool symbol opens the window for the device settings.
Within this window you can navigate with the Arrow buttons and select with the
Enter button.
The red Escape button brings you back to the measurement mode.
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDens Page 15
4. Usingthedevicesetting% Measure-
ment Automatic Dens you can activate
the automatic switch to % values for the
measurement function Automatic Density.
When measuring a %-patch the device will
then automatically switch to the display “Dot
area” and show the calculated values.
Youcanalsoturnofftheautomaticswitch
to %-values to avoid switching caused by
fluctuation.When the function is deactivated,
the device will always show the density
values and the dot area will not be calculated
automatically.
5. The LCD Display Contrast can be
turned darker or brighter.
6. Sets the menu Language of the device.
7. / 8. All measurement values get a Time-
and Date-stamp.This information will be
visible when the data is transmitted to the
PC software SpectroDens Connect.
9. Forthemeasurementofdensities,the
Display format CMYK can be selected.
The device can display two or three decimals.
The information in the chosen format is car-
ried out in all density modes.
10. / 11. The functions Density adjustment
(SLOPE) and Absolute white reference
values are for the internal device adjustment.
Attention! The device is correctly adjusted
by the factory and changes of these settings
should be made only in special cases (see
page23/24:SettingoftheDensityadjustment
(SLOPE).
Menu: Device settings
12.AReset puts the device to factory
settings.
Attention! All stored measurement values
and a recently made calibration will be
deleted and should therefore be saved on
the PC if necessary, by using the software
SpectroDens Connect. Only the factory-set
calibration values are still valid. A reset can
make sense, if SpectroDens does not work
properly.
13.TheinformationofDevice Voltages is
for diagnosis of the device by service person-
nel.
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDensPage 16
Menu: Measurement functions
When the “soft key” in the left section of the lower bar is activated, a window opens
where you can select the measurement functions.
ThemeasurementfunctionslistedbelowandtheGrayGuidefunction(US-version
only)aredescribedindetailinchapter2.
Indexofthemeasurementfunctions:
1. AutomaticDensity p.26
2. DensitiesCMYK p.29
3. DotArea p.30
4. DotGain/Contrast p.31
5. Trapping p.32
6. PrintingCurve p.33
7. PrintingPlate p.34
8. SlurandDoubling p.36
9. Densitygraph p.38
10. ExPressoMini p.39
11. CIEL*a*b* p.41
12. CIEColorCircle p.43
13. CIEXYZ p.43
14. Remissioncurve p.43
15. ISO-Check p.44
16. InkCheck(ColorGuide) p.48
17. CIEL*C*h*ab p.50
18. CIEL*u*v* p.50
19. CIEL*C*h*uv p.50
20. CIExyY p.50
21. DINLab99 p.50
22. Metamerism-Index p.51
23. Whiteness/Yellowness p.52
24. PASS/FAIL p.52
25. MediaWedge p.53
GrayGuidefunction p.58
(US-version only)
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDens Page 17
Menu: Measurement conditions
When the “soft key” in the right section of the lower bar is activated, a window
opens where you can set the measurement conditions which define the parameters
of the measurement, e.g. which filter will be applied.
Themeasurementconditions4.–14.andtheGrayGuideSetup(US-versiononly)
are described in detail together with the corresponding measurement functions in
chapter2.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
1. The device has an integrated Polarizing
filter, which can be activated or deactiva-
ted by a push of a button. Polarizing filters
compensate for measurement differences
between glossy and non-glossy surfaces (e.g.
freshly printed and dried sheets). The techni-
cal standards in Europe recommend the use
of such a filter for densitometric measure-
ments. On the other hand, colorimetric
measurements(e.g.L*a*b*-measurements)
should be taken without a polarizing filter.
ByselectingAuto from the menu, this will
be taken into account and there will be auto-
matically the right filter setting.
2. Therearetwopossibilitiesfordeningthe
White reference: Density measurements
usually are referred to the white value of
the paper printed on. Colorimetric measure-
ments refer to an absolute white reference
which is supplied as a ceramic tile on the
charging console.
ByselectingAuto from the menu, there will
always be the right setting according to the
measurement mode which is selected.
3. Dependingontheregionaltechnical
standards different Density filter settings
are required. SpectroDens as a powerful
spectro-photometer has the great advantage
that any filter specification can be exactly
calculated out of the spectral data.There is
no limitation known from conventional filter
based densitometers with fixed filters built in.
In Europe filter DIN 16536 is to be
selectedasthestandardlter.Insomecases
DIN16535NB(=NarrowBand)canbe
demanded.
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDensPage 18
Menu: Calibration
Prior to every series of measurements a calibration should be carried out. After a
calibration the device is long term stable, however it is recommended to perform
a calibration before starting a new measurement task just to be sure the device is
working properly.
For density measurements the calibration is carried out on paper white.This will
ensure that the density values are in direct ratio to the ink thickness which is applied
on the paper.When there is a change in the paper type, a new calibration has to be
done. Only in a few cases density measurements are referenced to an absolute white
standard.
A calibration is as easy to carry out as a measurement: Select the “soft key” Calibra-
tion and place the device with the measurement head on top of an unprinted area
of the paper sheet. The calibration can be started now by pressing either the Enter
button or the green Measurement button. After one second there will appear a win-
dow with the message that the calibration has been done.The device is now ready for
measurements.The message window will disappear with the next measurement.
During the calibration process always take care that the instrument is on a flat, stable
surface and that the material backing the paper is the same as for the following mea-
surements (white, gray or black).When the paper sample is printed on both sides, it
is recommended to use a black backing material in order to avoid misreadings due to
color shining through the back of the opaque paper.
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDens Page19
1.5 Care and maintenance
SpectroDensisahighly-preciseopticalinstrument.Itisdesignedtoworkinharsh,
industrial environments. However, it should be handled with care.
Avoid mechanical
shocks, heat, dusty or humid environments! Keep it always at a safe place, for example
in the carrying case.
Cleaning
The measurement head with the optical system is sealed against dust and dirt.
Take care that the visible, open measurement aperture is always free of dust.
Youcancleanthemeasurementaperturewithoil-free,cleancompressedairanda
brush used for cleaning photographic equipment. For easy cleaning the aperture can
be taken off from the measurement head by unscrewing two screws with a special
TORXT6screwdriver(whichispartofthepackageofaspareapertureset).
Clean the device casing and the display window only with a soft cloth and a non-
aggressive plastic cleaner. Never use alcohol or chemically aggressive solvent-based
cleaners which can destroy the surfaces. The same procedure is valid for the white
standard whichisintegratedinthechargingconsole.Ifthewhitestandardshouldbe
defective, it has to be replaced completely.
Should the display window show small scratches, these can be polished out with
special display polish greases as they are e.g. available for mobile phones and other
electronic equipment as well.
The charging contacts at the bottom of the device and on the charging console
can be kept clean with a cotton bud soaked with metal contact spray.
Please do not stick any labels at the bottom of the device.This could lead to faulty
measurements, because the direct contact – which is important for the correct opti-
cal field of depth – might not be maintained
Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDensPage20
1. Release the two screws completely so
they can be taken out. Now the aperture
can be lifted from the measurement head.
2. Whenassemblinganewaperture
take care that no dust enters the optical
elements. Do not press the screws too
tight in order to avoid damaging the
threads.
Exchanging apertures
The measurement aperture can be replaced for cleaning purposes or for change to a
differentaperturesize.AspecialscrewdrivertypeTORXT6isrequiredwhichispart
of each aperture replacement kit.
Turn the instrument upside down. Use a soft cloth as protective layer to avoid any
scratches of the display- or case-surface.
AftereachchangeofaperturesanewwhitecaIibrationhastobecarriedout.
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