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2

GETTING  STARTED ............................................................... 

 

Packing List ................................................................... 

 ..5

 

Features ........................................................................

..6

 

 

Precautions ....................................................................

..9

 

 

Measurement Shoe / Power On ....................................

10

 

Charging Battery............................................................

.

 

11

 

LCD Contrast Adjustment .............................................. 1

3

 

GENERAL OPERATION........................................................ 

 

Function Keys ................................................................ 

15

 

Measurement Modes .....................................................

18

System Setup ................................................................ 2

1

 

How to Take a Measurement .........................................

25

 

Guide to Measurement Functions ................................. 

26

 

CALIBRATION PROCEDURES ......................................... 

 

Calibration .....................................................................

28

 

Standard Calibration ......................................................

29

 

 

Quick Cal ....................................................................... 3

3

 

MEASUREMENT  FUNCTIONS ......................................... 

 

Density ...........................................................................

36

 

 

Density Difference ......................................................... 4

0

 

Dot Area ........................................................................

44

 

 

Dot Gain ........................................................................

49

 

 

Ink-Trap ......................................................................... 5

3

 

Print Contrast ................................................................. 5

9

 

Hue Error/Grayness/ Saturation .................................... 6

3

 

Cast/Brightness .............................................................

69

 

 

Dot Analysis ...................................................................

73

 

 

Auto-Function ................................................................ 

7

8

 

TABLE OF CONTENTS

 

Содержание OMAS

Страница 1: ...OMAS Densitometer COLOR REFLECTION DENSITOMETER OPERATION MANUAL Model R710 R720 R730...

Страница 2: ...nt Modes 18 System Setup 21 How to Take a Measurement 25 Guide to Measurement Functions 26 CALIBRATION PROCEDURES Calibration 28 Standard Calibration 29 Quick Cal 33 MEASUREMENT FUNCTIONS Density 36 D...

Страница 3: ...3 APPENDIX Specifications 86 Application Notes 87 Density Density Difference 88 Dot Area Dot Gain 89 Ink Trap 90 Print Contrast 92 Hue Error 93 Grayness 94 Typical Densitometer Values 95...

Страница 4: ...4 TABLE OF CONTENTS PACKING LIST FEATURES PRECAUTIONS MEASUREMENT SHOE POWER ON CHARGING BATTERY LCD CONTRAST ADJUSTMENT...

Страница 5: ...hipper immediately Item Part No Description Quantity 1 R7_0 Reflection Densitometer 1 2 406 002 AC Adapter U S A 120 VAC 1 406 003 AC Adapter Europlug 220 VAC 406 004 AC Adapter Great Britain 230 VAC...

Страница 6: ...ge graphic LCD display with contrast adjustment 2 Menu key Main selection for all measurement functions 3 Cable harness attachment Ihara Part No 413 001 4 Help key Help selection for all measurements...

Страница 7: ...7 FEATURES 8 6 7 Bottom View 6 Shoe lock 7 Battery compartment 8 Interchangeable aperture attachment...

Страница 8: ...9 LCD contrast adjustment 10 Configurable RS 232C communication port 11 AC adapter receptacle 12 Charge status indicator Green light indicates the battery is fully charged Orange light indicates the b...

Страница 9: ...ging Avoid operating in an area where the instrument may be exposed to direct sunlight high humidity or extreme temperatures Examine periodically for dust or dirt in the optical area If cleaning is ne...

Страница 10: ...unlock Gently slide the shoe lock forward to release the measure ment shoe To lock Close the measurement shoe and gently slide the shoe lock backward Power On 1 With the measurement shoe unlocked gent...

Страница 11: ...s instrument 1 Charging Sequence 1 Make sure the unit is turned off prior to connecting to the AC adapter 2 2 Insert the AC adapter outlet plug into the receptacle in the back of the unit 3 Plug the A...

Страница 12: ...mately 1 5 hours to fully charge the unit Ni Cad batteries may be charged repeatedly However the time between required charges will reduce gradually If the charging frequency increases dramatically us...

Страница 13: ...e diagram below The contrast of the LCD is adjusted at the factory However contrast may change depending on the ambient temperature You may adjust the LCD contrast to suit your preference We recommend...

Страница 14: ...14 GENERAL OPERATION FUNCTION KEYS MEASUREMENT MODES SYSTEM SETUP HOW TO TAKE A MEASUREMENT GUIDE TO MEASUREMENT FUNCTIONS...

Страница 15: ...to begin selection B FUNCTION KEYS The function of the three variable function keys is indicated to the left of each key on the LCD C HELP KEY Opens the Help Menu which offers explanations and proced...

Страница 16: ...r paper values manually Prompts you to measure solid or enter solid values manually Proceed to the next cylinder Return to the previous cylinder Proceed to the next page Scroll up Return to the previo...

Страница 17: ...tions menu of the function displayed Select item to revise value Begins battery refresh process Select highlighted item Proceed to next item Prompts you to measure reference target or enter values man...

Страница 18: ...0 R730 Measures the dot area on a halftone patch DOT GAIN R720 R730 Measures the increase in size of the halftone It allows the user to evaluate the quality of the print AUTO FUNCTION R720 R730 This m...

Страница 19: ...lso hue error measurements are needed by the color separator to adjust to the correct color GRAYNESS R730 Measures the contamination of one ink with another If the measurement deviates from the usual...

Страница 20: ...t gain curve for a press You may record up to 8 cylinders SECURITY USER CODE Optional for R710 R720 R730 As an option to safeguard your investment the R series densitometers may be set to operate only...

Страница 21: ...ss the ENTER key to select System Setup 5 4 Press the appropriate arrow key to scroll to the item you want to configure 5 Press the ENTER key to make the selection MODE SYS SETUP POWER OFF TIMER SOUND...

Страница 22: ...then shut off only with the ON OFF switch located on the rear of the instrument SOUND CONTROL The user may turn the beep sound on or off LEFT RIGHT VIEW The user may adjust the viewing direction of th...

Страница 23: ...English or Spanish BATTERY REFRESH The built in Ni Cad battery has a life of about two years If battery performance declines before this time the user may perform battery refresh To completely dischar...

Страница 24: ...nter your own 4 digit security code 3 Confirm your 4 digit security code by entering it again 4 Select the number of measurement readings to be allowed before the security confirmation screen appears...

Страница 25: ...n the Function Menu 3 Scroll down to highlight a measurement function 4 Press the ENTER key to select the function 5 Place the aperture target window on the area you wish to measure 6 Depress the top...

Страница 26: ...f all the indicators and variable function keys Measurement Mode Steps to enter into a measurement mode Measurement Procedures Steps to make a measurement Setup Parameters Description of available set...

Страница 27: ...27 CALIBRATION PROCEDURES STANDARD CALIBRATION QUICK CALIBRATION...

Страница 28: ...her calibration cards If you are calibrating this instrument for the first time please select standard calibration If the calibration reference card values had previously been entered into the instrum...

Страница 29: ...e 3 1 1 Press the MENU key to open the Function Menu 2 Press the UP ARROW key to scroll to CALIBRATION 3 Press the ENTER key to 5 select Calibration function 4 Press the DOWN ARROW key to scroll to ST...

Страница 30: ...erence Card perform the following procedure 1 Press the appropriate arrow key to scroll to the 2 value you want to change 2 Once that value is highlighted press the EDIT key to select 3 The value sele...

Страница 31: ...ee page 36 STEP 2 Enter calibration values for the black patch see Calibration Reference Card for black patch values MODE CALIBRATION STEP 2 BLACKVALUES K 1 71 C 1 69 M 1 73 Y 1 79 ENTE R MODE CALIBRA...

Страница 32: ...ation Reference Card STEP 5 Measure the black patch on the Calibration Reference Card STEP 6 Measure the cyan patch on the Calibration Reference Card STEP 7 Measure the magenta patch on the Calibratio...

Страница 33: ...enu 2 Press the UP ARROW key to scroll to CALIBRATION 3 Press the ENTER key to select Calibration function 4 Press the UP ARROW 5 key to scroll to QUICK CAL 5 Press the ENTER key to select Quick Cal F...

Страница 34: ...the white patch on the Calibration Reference Card STEP 5 Measure the black patch on the Calibration Reference Card STEP 6 Measure the cyan patch on the Calibration Reference Card STEP 7 Measure the ma...

Страница 35: ...MEASUREMENT FUNCTIONS 35 DENSITY DENSITY DIFFERENCE DOT AREA DOT GAIN INK TRAP PRINT CONTRAST HUE ERROR GRAYNESS SATURATION CAST BRIGHTNESS DOT ANALYSIS AUTO FUNCTION...

Страница 36: ...Off allows the user to specify exactly what is being measured D Measurement Format Absolute Measurement includes paper values Relative Measurement excludes paper values E Display Format AUTO Displays...

Страница 37: ...to scroll to DENSITY 3 Press the ENTER key to select the density function Density measurement step 1 Measure solid Measurement reading displayed FUNCTION MENU CALIBRATION DENSITY DENS DIFFERENCE ENTE...

Страница 38: ...luding paper or relative excluding paper The default setting is in the absolute density mode The absolute mode is recommended since we are usually only concerned with the total visual response on a pr...

Страница 39: ...d item 4 Press the appropriate 5 arrow key to scroll to the desired option 5 Press the ENTER key to input selection 6 Measurement screen displayed 7 You may now take a measurement with your option new...

Страница 40: ...ENCE B Measurement Indicator C Auto Detection Indicator See page 42 D Measurement Format See page 42 E Display Format See page 42 F Battery Indicator G REF Function Key H SETUP Function Key I Referenc...

Страница 41: ...o select the density difference function Density difference measurement step 1 Press the REF function key 2 Measure reference target or input reference values manually 3 Measure target 1 Measurement r...

Страница 42: ...Measuring Mode See page 44 Reference Density difference is a comparison between the reference and the target Therefore the user must first enter the reference value before measuring the target Measur...

Страница 43: ...ameter you 3 wish to change 3 Press the ENTER key to select the highlighted item 4 Press the appropriate arrow key to scroll to the desired option 5 5 Press the ENTER key to input selection 6 Measurem...

Страница 44: ...ct paper solid or halftone measurements Off allows the user to specify exactly what is being measured D Display Format AUTO Displays only the dominant color SINGLE Displays only the color selected E N...

Страница 45: ...ion Dot area measurement steps 1 Measure paper 2 Select the halftone patch 3 Measure the solid patch nearest the selected halftone patch 4 Measure the selected halftone patch Measurement reading displ...

Страница 46: ...ss the SETUP key 2 Press the appropriate arrow key to highlight the N value selection 3 Press the ENTER key to select 4 The current N value will blink 5 Press the appropriate arrow key to edit the val...

Страница 47: ...2 Press the appropriate arrow key to scroll to the item you wish to change 3 Press the EDIT key to select item 4 The selected item will begin to blink 5 Press the appropriate arrow key to change the v...

Страница 48: ...em 5 4 Press the appropriate arrow key to scroll to the desired N value 5 Press the ENTER key to input selection 6 Returns to Dot Area Measurement screen 7 You may now take a measurement with your new...

Страница 49: ...ode DOT GAIN B Measurement Indicator C Auto Detection Indicator See page 50 D N Value Indicator E Battery Indicator F SOLID Function Key G PAPER Function Key H SETUP Function Key MODE DOT GAIN SETU P...

Страница 50: ...riate arrow key to scroll to DOT GAIN 3 Press the ENTER key to select the dot gain function Dot gain measurement steps 1 Measure paper 2 Select the halftone patch 3 Measure the solid patch nearest the...

Страница 51: ...values prior to the dot gain measurement The color bar values of the highlight midtone and shadowshould match the halftone percentages of the color bar being used Example In a System Brunner color ba...

Страница 52: ...hlighted item 5 4 Press the appropriate arrow key to scroll to the desired N value 5 Press the ENTER key to input selection 6 Returns to Dot Gain Measurement screen 7 You may now take a measurement wi...

Страница 53: ...53 INK TRAP In the ink trap function there are two different measurement screens Screen 1 Indicates the ink color measurement Screen 2 Indicates the ink trap measurement...

Страница 54: ...r On allows the instrument to automatically detect paper solid or trap measurements Off allows the user to specify exactly what is being measured E Trap Formula Indicator Preucil GATF Brunner Newsprin...

Страница 55: ...Trap Indicator C Measurement Indicator D Auto Detection Indicator See page 60 E Print Sequence Indicator F G Trap Formula Indicator Battery Indicator See page 60 H SOLID Function Key I PAPER Function...

Страница 56: ...K TRAP 3 Press the ENTER key to select the ink trap function Ink Trap measurement steps 1 Measure paper 2 Measure the solid cyan patch closest to the trap patch 3 Measure the solid magenta patch close...

Страница 57: ...arameters Trap Formula Select either Preucil GATF Brunner or Newsprint trap formula Print Sequence Select the correct ink application sequence Sequence options CMY CYM MCY MYC YCM YMC Paper See page 5...

Страница 58: ...5 Press the ENTER key to input selection 6 Measurement screen displayed 7 You may now take a measurement with your newly selected setup option MODE INK TRAP TRAP FORMULA PRINT SEQUENCE ENTE R AD PREU...

Страница 59: ...Indicator Current mode PRINT CONTRAST B Measurement Indicator C Auto Detection Indicator See page 50 D Battery Indicator E SOLID function key F PAPER function key G SETUP function key MODE CONTRAST SE...

Страница 60: ...the ENTER key to select the print contrast function Print contrast measurement steps 1 Measure paper 2 Measure solid 3 Measure shadow 70 75 or 80 on the color bar Measurement reading displayed FUNCTIO...

Страница 61: ...61 PRINT CONTRAST Setup Parameters Auto Detection See page 52 Paper See page 53 Solid See page 53...

Страница 62: ...for Auto Detection 3 Press the ENTER key to input selection 3 4 Measurement screen displayed 5 You may now take a measurement with your newly selected setup option MODE CONTRAST AUTO DETECTION ON OFF...

Страница 63: ...In the hue error grayness saturation function there are two different measurement screens Screen 1 Indicates the measurement reading for hue error grayness and saturation Screen 2 Indicates the densit...

Страница 64: ...ERROR GRAYNESS SATURATION B Ink Color Indicator C Measurement Indicator for Hue Error Grayness Saturation D Auto Detection Indicator See page 42 E Battery Indicator F NEXT PAGE Function Key G PAPER Fu...

Страница 65: ...N B Ink Color Indicator C Measurement Indicator for Density D Auto Detection Indicator See page 42 E Measurement Format Relative Measurement excludes paper values F Battery Indicator G NEXT PAGE Funct...

Страница 66: ...teps 1 Measure paper 2 Measure solid 3 Measurement reading displayed 4 4 Press the NEXT PAGE key to view the ink density readings in relative mode excluding paper values FUNCTION MENU INK TRAP PRINTCO...

Страница 67: ...N Setup Parameters Auto Detection Automatically detects if a measurement is that of a solid paper halftone or overprint Auto Detection may be turned off if the user needs to specify exactly what is be...

Страница 68: ...input selection 4 Measurement screen displayed 5 You may now take a measurement with your newly selected setup option MODE HUE GRAY INK CYAN HUE ERROR M 35 SETU P GRAYNESS 15 PAPER SATURATION 0 32 NEX...

Страница 69: ...69 CAST BRIGHTNESS In the cast brightness function there are two different measurement screens Screen 1 Indicates the cast and brightness measurements Screen 2 Indicates the reflectance of the paper...

Страница 70: ...Function Indicator Current mode CAST BRIGHTNESS B Measurement Indicator for Cast Brightness C Measurement Format Absolute Measurement includes paper values D Battery Indicator E NEXT PAGE Function Key...

Страница 71: ...n Indicator Current mode CAST BRIGHTNESS B Measurement Indicator for Reflectance C Measurement Format Absolute Measurement includes paper values D Battery Indicator E PREV PAGE Function Key MODE CAST...

Страница 72: ...er 2 Measurement reading displayed 3 Press the NEXT PAGE 3 key to view the reflectance values in the absolute mode including paper values There are no setup parameters for this function FUNCTION MENU...

Страница 73: ...responding graph is generated to give a visual representation The data can be saved for future reference Basic measurement steps for Dot Analysis 1 Enter the number of cylinders or colors to be evalua...

Страница 74: ...Function Indicator Current mode DOT ANALYSIS B Menu Options for Dot Analysis Mode C DOWN ARROW Function Key D ENTER Function Key MODE DOT ANLYS CYLINDER S MEASUREMENT FILENAME SCREEN VALUE GRAPH PRINT...

Страница 75: ...lysis measurement steps 1 Press the appropriate arrow key to scroll to the number of cylinders or colors to be evaluated 2 Press the ENTER key to input selection 3 Measure the halftone values for 100...

Страница 76: ...the reference density and dot gain readings for each of the cylinders 50 0 65 21 40 0 48 17 NEXT 30 0 39 16 CYLND 20 0 26 8 10 0 21 7 PREV 0 0 12 0 PAGE MODE DOT ANLYS CYLINDER 1 C REF DENS GAIN PREV...

Страница 77: ...ph of dot gain and dot area for each cylinder D Print If the instrument is connected to a printer the measurement readings will be printed out 3 Press Enter key to input selection 20 CYLIN DER 1 0 NEX...

Страница 78: ...TO FUNCTION In auto function there are three different measurement screens Screen 1 Indicates the density measurement Screen 2 Indicates the dot gain measurement Screen 3 Indicates the ink trap measur...

Страница 79: ...the instrument to automatically detect paper solid halftone and ink trap measurements Off allows the user to specify exactly what is being measured E Measurement Format F Display Format ALL CMYK Displ...

Страница 80: ...O FNCT B Measurement Function Indicator C MeasurementIndicator D Halftone Indicator E Auto Detection Indicator See page 50 F N Value Indicator G Battery Indicator H SOLID Function Key I PAPER Function...

Страница 81: ...ent Function Indicator C Measurement Indicator D Auto Detection Indicator See page 60 E Print Sequence Indicator F Trap Formula Indicator See page 60 G H Battery Indicator SOLID Function Key I PAPER F...

Страница 82: ...3 Press the ENTER key to select Auto Function Auto Function measurement steps 1 Measure paper 2 Measure the black solid patch 3 Measure the cyan solid patch 4 Measure the magenta solid patch 5 Measur...

Страница 83: ...ensity B B Dot Gain C Ink Trap C MODE AUTO FNCT INK TRAP RED Y M 90 SETU P PAPER C M Y AD PREUCIL SOLID MODE AUTO FNCT DOT GAIN SETU P C 15 HIGHLIGHT 15 PAPER SOLID AD N 1 00 MODE AUTO FNCT SOLID DENS...

Страница 84: ...n 6 Measurement screen displayed 7 You may now take a measurement with your newly selected setup option MODE AUTO FNCT MEASURING MODE ABSOLUTE RELATIVE ENTE R AD ABS ALL MODE AUTO FNCT MEASURING MODE...

Страница 85: ...APPENDIX 85 SPECIFICATIONS APPLICATION NOTES...

Страница 86: ...r GaAsP Photodiode Display 128 x 64 Dot Graphic LCD Power Supply Ni Cad 4 8V 800mAh Recharge Time Approximately 1 5hours Measurements Approximately 4 000 Internal Testing Per Charge SecurityUser Code...

Страница 87: ...is especially useful for the first time user of densitometers References are examples only since specific requirements will vary The following topics are discussed Density Density Difference Dot Area...

Страница 88: ...ess By using a densitometer the user can interpret the work output systematically It eliminates the guess work of adjusting the ink displacement Increase or decrease of the amount of ink applied durin...

Страница 89: ...ring color separation Also dot gain is a good indicator of the quality of the print Dot Area Equation Dot Area 1 10 D t D p n x 100 1 10 D s D p n Where D t is the density of the tint D s is the densi...

Страница 90: ...equence ink film thickness blank pressure etc GATF Preucil Trap Equation Trap 2 color Dop D1 x 100 D2 Where D1 1st ink density minus paper density D2 2nd ink density minus paper density Dop 2 color ov...

Страница 91: ...1 1st ink density minus paper density D2 2nd ink density minus paper density Dop 2 color overprint minus paper density Dm is the maximum printable density for the given substrate minus substrate densi...

Страница 92: ...tyand sharp images are desired This measurement will give a quick indication of the optimal ink feed relating to the shadow tones Relative Print Contrast Equation Print Contrast 1 Dt Dp x 100 Where Me...

Страница 93: ...the ink sample and communicate this information to the color separator The color separator can then make the adjustments to the film to achieve the best possible colors Hue Error Equation Hue Error Dm...

Страница 94: ...ed ink during a press run If the reading is beyond the normal value it is an indication that there may be a tack problem trapping or ink contamination etc Grayness Equation Grayness Dmin x 100 Dmax Wh...

Страница 95: ...5 0 05 DOT GAIN 50 Midtone Gloss Coated Paper 19 Uncoated Paper 25 Newspaper 31 TRAP 2 color overprint 75 Red 73 Green 80 Blue 77 PRINT CONTRAST 75 target GlossCoatedPaper Black 42 Cyan 37 Magenta 35...

Страница 96: ...Wagtech Court Station Rd Thatcham RG19 4HZ United Kingdom T 44 0 1635 872929 Fax 44 0 1635 873509 E sales trace2o com W www trace2o com...

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