Siete qui: prodotti · uvscale film L Description: Fuji Uvscale Film L: Photosensitive Film Suitable for Measuring the Distribution of Surface UV Light Irradiation

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Uvscale Film L

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Uvscale Photosensitive Film for Measuring UV Light Irradiation Distribution



Fuji Uvscale Film L: Overview

The Uvscale film was recently introduced by Fuji Film to enable the verification and study of light distribution determined by an UV source. Famiglia Fuji Uvscale Film To better address the variety of potential uses for Uvscale, Fuji Film has developed this product line across different measurement ranges to cover most applications. Specifically, the Uvscale L film represents the lowest grade available in the Uvscale product range. In manufacturing and production contexts, verifying the correct intensity of UV light applied, as well as its actual coverage of the treated area, is essential. The ability to monitor this important parameter allows for timely replacement of UV lamps when their light output decreases, improving production quality and enhancing process repeatability. The Uvscale product range provides a useful methodology for studying, analyzing, and verifying surface UV irradiation phenomena. It does not require specific skills or technical knowledge for use. The Uvscale photosensitive film is straightforward, quick, and intuitive to use, and does not need special preparation. From the very first use, the image impressed with various shades of blue will clearly visualize UV irradiation distribution, which can be interpreted by direct comparison with the provided colorimetric reference chart or through more accurate and repeatable electronic measurement methods.

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Fuji Uvscale Film L: Key Features

  • easy "mapping" of surface UV irradiation distribution;
  • good repeatability of results obtained in measurement campaigns;
  • colorimetric chart provided (for visual appreciation);
  • availability of optional electronic analysis systems;
  • simple and intuitive use.
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Fuji Uvscale Film L: Technology Overview

Depending on their measurement range, Uvscale films are available in two different formats: single and double sheet. Tecnologia Uvscale Film The most sensitive sheet (L) is a single sheet type, used directly with the UV light source, while the other gradations (M and H) involve a second sheet with photo-reducing characteristics, which alters the operational range of the sensitive Uvscale film. The Uvscale film with the L range is available only in a single sheet version (mono sheet type). This single sheet type consists of a sensitive sheet coated with a highly uniform layer of microcapsules (using proprietary PSC - Particle Size Control technology), which contains a substance that changes color in response to absorbed UV radiation.

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When the Uvscale film is exposed to UV light, the dye contained in the microcapsules changes color, and the new color density can be visually assessed against the film's white background. This allows for comparison using the color scale provided with the product.
If you have any doubts, further useful information can be obtained by consulting the FAQ Uvscale

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Fuji Uvscale Film L: Technical Specifications

  • denomination: Uvscale;
  • product code: L;
  • type: single sheet film;
  • roll dimensions: 270 mm x 5 meters (length);
  • measurable UV sources: Hg lamp (high and low pressure), metal halide, UV LED (365 nm);
  • measurement range (* high pressure Hg lamp): from 4 to 200 mJ/cm²;
  • measurement range (* metal halide lamp): from 6 to 200 mJ/cm²;
  • measurement range (* low pressure Hg lamp): from 20 to 3000 mJ/cm²;
  • measurement range (* UV led 365 nm lamp): from 200 to 6000 mJ/cm²;

(*) this does not guarantee the absolute values of UV light.
(*) measurement ranges detected using FUD-7010E.
(*) applicable to wavelengths in the range of 200 to 420 nm.
(*) the amount of light that can be visually controlled is the density on the standard color samples (from 0.30 to 0.75) reported in the instruction manuals.

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Fuji Uvscale Film L: Usage Instructions

It is advisable to prepare the Uvscale L film well in advance of the test, allowing the films to acclimate to the environmental conditions in which they will be used. Unroll a sufficient amount of film for the test, ensuring that it rests on a clean, dry surface, preferably in dim lighting. These preparatory actions will help the films settle, making the subsequent cutting and positioning operations easier, as described in the sequence below. During these operations (and those that follow), place only the glossy sides of the films on the work surfaces, as the matte sides are the ones that, when combined, determine the density and distribution of the recorded coloration. This will help prevent any accidental contact that could affect the films before the tests.

none none Cut the Uvscale L film sheet to the desired dimensions using a simple pair of scissors. Since this grade of Uvscale (L) consists of a single film, ensure that the cut sheet is appropriately sized for the area to be tested.


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none none Handle the Uvscale L film with care, avoiding any dirt or creases on the sheets to be tested. The single sensitive film should be placed with the glossy side facing down on the surface, while the matte side should be exposed to the UV light source being tested.

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none none Ensure that the work area to be tested is adequately prepared and cleaned, and verify the correct positioning of the ultraviolet light source in advance. Once the Uvscale film is properly oriented, position it in the area to be tested.


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none none Activate the UV light source to begin the emission of ultraviolet light for analysis. For details on how to conduct the test, such as light intensity and type of UV source, refer to the instruction manual provided with the Uvscale film.


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none none Deactivate the UV light source to conclude the test. Remove the exposed Uvscale film from the work area.
The Uvscale film will now display the mapping of the UV light exposure zones detected.

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none none Evaluate the results of the test using the instruction manual provided, which includes the colorimetric scale and reference charts.
The film will show the mapping of the UV exposure applied, recording the intensity of the detected UV light based on the developed color density.
This can be visually compared with the colorimetric chart to assess the UV irradiation levels.
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THE NEXT STEPS ARE OPTIONAL AS THEY REQUIRE ADDITIONAL ANALYSIS TOOLS, WHICH ARE AVAILABLE FOR SEPARATE PURCHASE.

none none Where more accurate and repeatable evaluations of the results obtained are necessary, it is possible to scan the impressed films (for example, using an Epson™ Perfection scanner) to obtain electronic images. These images can be saved, stored, and archived for future comparisons, and can also be analyzed using optional support software.
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none none Once digital scans of the Uvscale films impressed by the analyzed event have been prepared, you can use the optional FUD-7010E support software to perform additional analyses. This includes tasks such as evaluating colorimetric results using false colors, rendering three-dimensional profiles, and measuring the amount of light exposure, among other functions.
See package FUD-7010E for more details.
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Fuji Uvscale Film L: Reference Documentation

file PDF - Fuji Uvscale Film L - general brochure (english)
file PDF - Fuji Uvscale Film L - instruction manual (english)
file PDF - Fuji Uvscale Film - safety data sheet (english)

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Fuji Uvscale Film L: Main Applications

The Uvscale films have been advantageously used in applications such as the following:

  • fine-tuning UV light curing systems;
  • verifying the distribution of UV light irradiating resins in molding systems;
  • fine-tuning coating processes with UV resins;
  • studying and verifying UV irradiation in LCD display machines and electronic components;
  • verifying UV irradiation in microelectronics systems (e.g., back grinding, etching, and dicing processes);
  • fine-tuning and verifying inkjet printing systems with UV exposure;
  • assessing and verifying UV irradiation distribution in reflectors for subsequent fine-tuning;
  • studying and analyzing UV sterilization systems.

It is also recommended to refer to the specific section containing the Application Notes prepared by Fuji Film for the Uvscale Film.

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©1998-2024 Spare sas
In preparing this document, the utmost care has been taken to ensure that the content accurately reflects the characteristics of the described product. However, despite these efforts, Spare sas cannot be held responsible or liable for any inaccuracies. Furthermore, in the context of ongoing product development and improvement, please note that the information provided may not be up-to-date with the latest version, as manufacturers reserve the right to withdraw or modify their product documentation at any time without notice. Consequently, it is advised to verify the accuracy and currency of the information at the time of purchase.