You are here: prodotti · uvscale film M Description: Fuji Uvscale Film M, photosensitive film suitable for measuring the distribution of superficial UV light irradiation.

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Uvscale Film M

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Uvscale photosensitive film for measuring the distribution of UV light irradiation.



Fuji Uvscale Film M: Overview

The Uvscale film has been recently introduced by Fuji Film to allow for the verification and study of light distribution from a UV source. Famiglia Fuji Uvscale Film To better meet the diverse range of possible applications for Uvscale, Fuji Film has developed this product family, offering different measurement ranges to cover most applications. Specifically, the Uvscale M film is an intermediate-grade film available in the Uvscale product range. In manufacturing and production environments, there are numerous situations that require verification of the correct UV light intensity applied and its effective coverage over the treated area. The ability to monitor this crucial parameter allows for timely replacement of UV lamps when their light output decreases, improving production quality levels and ultimately increasing process repeatability. The Uvscale product range is an effective methodology for studying, analyzing, and verifying UV light irradiation phenomena. Its use does not require specialized skills or technical knowledge. The Uvscale photosensitive film is very simple, quick, and intuitive to use, and does not require specific preparation. From the first use, the film will display varying levels of blue, providing a clear visualization of UV irradiation distribution, which can be interpreted by direct comparison with the provided colorimetric reference chart or through more accurate and repeatable electronic measurement tools.

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Fuji Uvscale Film M: Key Features

  • easy mapping of UV light distribution on surfaces;
  • good repeatability of results in measurement campaigns;
  • colorimetric table included (for visual assessment);
  • availability of optional electronic analysis systems;
  • simple and intuitive use.
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Fuji Uvscale Film M: Technology Overview

Based on their measurement range, Uvscale films are available in two formats: single-sheet and double-sheet. Tecnologia Uvscale Film The more sensitive sheet (L) is a single-sheet type used directly with the UV light source, while other grades (M and H) are obtained using a second sheet with photosensitive properties, which modifies the operating range of the sensitive Uvscale film. The Uvscale M film is available only in a double-sheet version. This type consists of a sensitive sheet with an extremely homogeneous layer of microcapsules (proprietary PSC - Particle Size Control technology) that change color based on the absorbed UV radiation, and of an additional photosensitive sheet that acts as a filter between the light source and the Uvscale sensitive film. This configuration allows for a more precise measurement and filtering of UV light, suitable for a range of applications.

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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 (thanks to the white background of the film support), using the provided color scale. To prevent color saturation of the film, additional Uvscale grades are achieved by using the second film provided (grades M and H), which features photosensitive properties. This second film acts as a filter, moderating the amount of UV exposure impacting the Uvscale film. If you have any doubts, further useful information can be obtained by consulting the FAQ Uvscale

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Fuji Uvscale Film M: Technical Specifications

  • denomination: Uvscale;
  • product code: M;
  • type: double sheet film;
  • roll dimensions: 270 mm x 5 meters (length);
  • measurable UV sources: high pressure Hg lamp, metal halide lamps, UV LEDs (365 nm);
  • measurement range (* high pressure Hg lamp): from 50 to 2000 mJ/cm²;
  • measurement range (* metal halide lamp): from 30 to 1000 mJ/cm²;
  • measurement range (* UV led 365 nm lamp): from 300 to 7000 mJ/cm²;

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

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Fuji Uvscale Film M: Usage Instructions

It is advisable to prepare the Uvscale M films well in advance of the test to allow the films to adjust to the environmental conditions in which they will be used. Unroll an adequate amount of films for the test to be conducted, ensuring they rest on a clean, dry, preferably dimly lit surface. These preparatory actions will allow the films to settle, simplifying the subsequent cutting and positioning operations described in the sequence below. During these operations (and those that follow), place only the glossy sides of the films on the work surfaces (the matte sides are the ones that, when combined, determine the density and distribution of the recorded color) to avoid any accidental contact that could affect the films before testing.

none none Proceed to cut the Uvscale M films to the desired dimensions using a simple pair of scissors. Since it consists of two films (a photo-reducing film and a sensitive film), ensure to cut both films that make up the Uvscale Film, making sure that the dimensions are appropriate for the area to be tested.

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none none Handle the Uvscale M with care, avoiding any contamination or bending of the sheets to be tested. Overlap the two films so that the cut shapes match for both sheets. The sensitive film should be placed with the glossy side down on the surface, while the matte side should be covered by the photo-reducing sheet. Be sure to account for this arrangement during the cutting process.
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none none Ensure that the work area to be tested is properly prepared and cleaned, and check the correct positioning of the ultraviolet light source in advance. After correctly aligning the two Uvscale films, proceed to place them in the area to be tested.


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none none Activate the UV light source to start the emission of the ultraviolet light to be analyzed. For details on how to conduct the test (e.g., light intensity, type of UV source, etc.), further information can be obtained from the instruction manual provided with the Uvscale film.

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none none Deactivate the UV light source to conclude the experiment. Remove the exposed Uvscale film from the work area. The Uvscale films will now display the mapping of the UV light exposure areas.


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none none Evaluate the results of the test using the instruction manual provided, which includes a colorimetric scale and reference charts. The film will display the mapping of the applied UV exposure, recording (based on the developed color density) the intensity of the detected light exposure. This can be visually assessed by comparing it with the colorimetric chart.

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THE FOLLOWING STEPS ARE OPTIONAL AS THEY REQUIRE THE USE OF ADDITIONAL ANALYSIS TOOLS THAT MUST BE PURCHASED SEPARATELY.

none none Where more accurate and repeatable evaluations of the results are needed, it is possible to scan the impressed films (e.g., using an Epson™ Perfection scanner) to obtain electronic images. These images can be saved, stored, and archived (for future comparisons) and, most importantly, can 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 further analyses. These analyses may include evaluating colorimetric results using false colors, rendering three-dimensional profiles, measuring light exposure, and more.
See package FUD-7010E for more details.
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Fuji Uvscale Film M: Reference Documentation

file PDF - Fuji Uvscale Film M - general brochure
file PDF - Fuji Uvscale Film M - instruction manual
file PDF - Fuji Uvscale Film - safety data sheet

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Fuji Uvscale Film M: Main Applications

Uvscale films have been advantageously used in various applications, including:

  • development of UV light curing systems;
  • verification of UV light distribution in resin curing systems;
  • optimization of UV resin coating processes;
  • study and verification of UV exposure in LCD display machines and electronic components;
  • UV exposure verification in microelectronics (back grinding, etching, and dicing processes)
  • development and testing of UV exposure inkjet printing systems;
  • assessment and verification of UV exposure distribution in reflectors for fine-tuning;
  • study and analysis of UV sterilization systems.

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