Rite Life 394 manuale d’uso

393/394 Sensitometer Operation Manual[...]

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i FCC This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equi pment is operated in a commercial environment. This equipment generates, uses, and can radiate radio freque[...]

ii CE DECLA RATION Manufacturer’s Name X-Rite, Incorporated Manufacturer’s Address: 3100 44 th Street, S.W. Grandville, Michigan 49418 U.S.A. Model Name: Sensitometer Model No.: 393 and 394 Directive(s) Confor mance: EMC 89/336/EEC WA RNING This is a class A product. In a domestic environment this product may cause radio interf erence in which [...]

iii Limited Warranty X-Rite, Incorporated warra nts each unit manufactured to be free of defects in mater ial and workmanship for a period of twelve months. I f the fault has been caused by misuse or abnorm al conditi ons of operations, repairs will be billed at a nominal cost . In this case, an estim ate will be submitted before work is started, i[...]

iv Table Of Contents 1. Getting St arted ...................................... 1 Unpacking and In specti on ..................... 1 Instrument De scripti on ........................... 2 Applying Po w er ...................................... 3 2. A pplication and Procedures ................. 4 Sensitometer Monitoring For Process Contro l ........[...]

1 1. Getting Started Unpacking and Inspection After rem oving the instrument from the shipping carton, inspect for possible damage. I f any damage has occurred during shipping, im mediately contact the transportation company. Do not proceed with installation until the carrier’s agent has inspected the damage. If damage is not evident, ch eck to m[...]

2 Instrument Description The Process Optimization Sensitom eter is a battery operated, dual color, single or dual (394 only ) sided exposure sensitometer, desi gned for quality control of cine and X-ray processing system s. It produces a repeatable stepped exposure on applicable film . Its ease of operation enables anyone with little instruction to[...]

3 Applying Power The sensitometer is shipped from the factory with the battery installed and power switch in the “Off” (left) position—slide switch to the “On” (right) position. The battery switch for the 393 is located on the front of the instrument. T he battery switch for the 394 is located on the bottom of the instrum ent. Because the[...]

4 2. Application and Procedures Sensitometer Monitoring For Process Control The sensitometer exposes film with a known quantity of light through a 21-step light m odulator . The maxim um light is emitted from Step No. 21. Each successive step emits approxim ately 70.7% of the light emitted from the step adjacent to it (.15 log exposure). The proces[...]

5 Variations in processor conditions are m onitored on this step. • Contrast Index: An indicator of the slope of the straight-line portion of the D-Log E Cur ve is called Contrast Index. Select the step closest to but not larger than 2.20D. Subtract from this step the step closest to but not lower then 0.45D. Contrast Index is used to m onitor pr[...]

6 The film selected to m onitor a given processor should be representative of the film used with that processor. Scheduling Sensitometric Control Every processor in use should have a separate control chart plotted to monitor its behavior . The more fr equent the data points, the better the control feedback. A control film should be run at star t-up[...]

7 5. After processing of film is complete, record the date, time, and pr ocessor identification number on the film in the designated areas. Manual Data Recording Procedure Establishing Normal Speed Index, Contrast Index, and Base+Fog The norma l speed index, cont rast index, and base+fog values are established on a representative film, when the pro[...]

8 NOTE: Monitor subsequent film s on the same steps selected for norma l contr ast index. • Date - Month - Day – Year • Processor Number - Processor identification • Emulsion Number - Film batch identification • Developer Type - Developer vendor identification • Fixer Type - Fixer vendor identification • Film Type - Film vendor identi[...]

9 Automatic Data Recording Procedure—Using the 391 Densitometer When the X-Rite 391 densitometer is used to measure process control films, it will autom atically calculate and store the values for: speed index, contrast index, and base+fog. The unit will also store up to 32 measurem ents of film data for twelve processors. Printing Process Contro[...]

10 Processor Troubleshooting When troubleshooting out of tolerance processor conditions, use Speed Index as the prim ary guide. Speed Index is the most predictable indicator for all film types. Base+Fog is predictable, but is the least sensitive. Contrast Index reacts predictably for a given set of film conditions but m a y vary from film to film. [...]

11 3. Using the Sensitometer Setting Exposure Color Optimum sensitometric control occurs when the proper color light exposes the film. E xpose with the sam e color emitted from the intensifyi ng screen recomm ended by the film m anufacturer for the film being exposed. For example, when using blue em itting intensifying screen—expose in “BLUE”[...]

12 Selecting Single or Dual Exposure (394 only) Depending on the type of film that is to be exposed, the sensitometer can have either single sided or double- sided exposure selected. If the film to be exposed is a single em ulsion type, slide the exposure switch to the “SINGLE” position and expose Emulsion Side Down . Expose double emulsion typ[...]

13 activated. When th e green color is selected, switches A,B,C,D bracketed as green are activated. Exposure Setting A B C D 1 MIN OFF OFF OFF OFF 2 ON OFF OFF OFF 3 OFF ON OFF OFF 4 OFF OFF ON OFF 5 ON ON ON OFF 6 OFF OFF OFF ON 7 MAX OFF OFF ON ON Adjusting Exposure Setting (394) The sensitometer has the capability of seven different exposure tim[...]

14 Exposing Film Expose the selected film as follows: 1. Select exposure color—blue or green. 2. Select single or dual exposure (394 only). 3. Adjust exposure setting if required. 4. Insert the film —emulsion side down if single— with the back edge against the stop, and the film centered in the unit. 5. Press the expose button down and hold u[...]

15 6. Release the expose button and rem ove the film imm ediately. 7. Develop the film in the pr ocessor to be m onitored (refer to Section 2). 8. Record data on film im mediately after development (re fer to Section 2). IMPORTA NT NOTES: • Film m ust be inserted a ll the way to the back of the unit in order to be exposed properly. • The sensit[...]

16 4. General Maintenance Repair Information Your 393/394 Instrum e nts ar e covered by a one-year limited warranty —excluding alkaline battery—and should be referred to the factory for repair within the warranty period. Attempts to m ake repairs within this time fram e may void the warranty. X-Rite provides a factory repair service to their cu[...]

17 Cleaning the Instrument Your instrument requires very little m aintenance to achieve years of reliable operation. However, a few simple cleaning procedures should be performe d from time to tim e. General Cleaning The exterior of the instrum e nt m ay be wiped clean with a cloth dampened in water or a m ild cleaner, whenever required. NOTE: DO N[...]

18 Replacing the Battery A low battery condition prevents exposures from occurring . Always Replace The Battery before ref erring the unit for service. 1. Turn Power Switch “Off” and rem ove battery access cover by sliding outward. 2. Disconnect old 9-Volt battery from the circuit and discard. WARNING: Connecting the battery leads backward may [...]

19 5. Technical Specifications Design Conformance: A.N.S.I. PH2.9-1974* Unit-to-Unit Repeatability : ±.02 Log Exposure Exposure Stability: ±.02 Log Exposure per year Temperature Sensitivity: ±.02 Log Exposure from 59°F (15°C) - 86°F (30°C) Electrical Required: 9-Volt alkaline battery Light Modulation: 21-Step Wedge, 0.15D per step Blue Color[...]

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P/N 393-500 Rev. O-4/28/04 X-Rite, Incorporated - World Headquarters 3100 44th Street S.W . • Grandville, Michig an 49418 • USA www.x-ri te.co m • Te l: 1- 888-826-3044 Fax: 1-888-826-3045 or (616)-534-0686 International Tel: 1-888-826-3039 or (616) 534-7663 Fax: (616) 534-0723 X-Rite GmbH Stollwerckstraße 32 • 51149 Köln • Germany Tel:[...]