He Luster paper , Also known as lustrillo, silhouette or patent leather, is a paper that comes in a great variety of shades and stands out mainly for being very bright on its surface, while on its other side is white. It is usually a biodegradable paper.
It comes in many grades, types and sizes. They are usually square in shape, although some come in rectangular plies. It is a very used paper in the crafts in school, for the creation of origamis, wraps, celebrations, celebrations, disguises, gifts, compositions, to cover notebooks, as well as to print photographs.
The brightness of the surface of the luster paper is the result of a great reflection or excellent diffusion. If the incident light rays are reflected at an angle X, the paper appears bright.
If the incident light beams striking the paper at a normal angle to the plane of the paper are diffuse reflections (reflected at angles other than X), the paper appears matte or matte.
Using a goniophotometer
The goniophotometer measures the reflectance of light at various angles, taking into account an angle of incidence of 75 degrees to a line normal to the paper surface. The brightness measurement is given as a peak reflected intensity ratio.
The brightness of the luster paper is also measured by comparing the reflection intensity of the paper with a standard, such as black glass. A related measure is reflectivity.
The theory is the same, but the measurements are carried out differently. In this case, the incident light is filtered, so that the color and luminosity of the paper can be characterized by their reflectivity at various wavelengths.
The brightness of a paper is measured by illuminating the sample with a 45 degree font on the paper surface and filtered at 457nm, and a photocell at 90 degrees from the paper surface.
The instrument is calibrated using magnesium oxide, referred to as 100. The brightness of the gloss paper is measured by the reflected light ratio of the paper to the light reflected from the magnesium oxide.
Opacity is the ability of paper to block transmitted light. The instrument used to measure this property takes a measure of the light reflected by the sample placed in front of a white pattern, in relation to a measurement of the light reflected by the sample placed in front of a black pattern.
The luster paper is bright, reflects light and has no ability to block transmitted light, on the contrary, reflects the brightness of light.
Photo glossy paper
The gloss paper is one of several photo paper finishing options, which resembles the pearl in its visual appearance and a photographic lab quality satin in its texture.
The luster finish is quite unique and used by a small number of manufacturers often in their professional range. It produces vivid colors with crisp detail and black-and-white production with rich blacks and a soft tonality.
Of course, the quality will vary depending on the supplier and the qualities of the paper in terms of weight, coating of the receiving layer and other aspects.
The glossy paper contains low levels of glare, but nowhere near brightness levels does a glossy finish paper. Therefore, it is often described as a"semi-glossy"finish.
It is a compromise between bright and matte that becomes very useful when photography is viewed from various angles (as in the case of an image that is displayed in a gallery) and under certain lighting conditions.
This type of paper is not for everyone's taste due to the soft gloss properties of the paper and its categorization of"professional paper", which often means that it is not the cheapest option.
However, if you are looking for a satin finished paper with a soft luster surface like those obtained from a photo lab, it is certainly a suitable option for you.
The surface of the luster is also called satin, pearl, and sometimes semi-gloss. The term of the photographic industry for brightness is"E-Surface". The gloss inkjet paper has a repetitive textured surface. This texture has two important functions:
1) Allows paper to withstand tampering.
2) Reduces the direct reflection of light towards the viewer. This makes it less bright and makes the image easier to see at all angles.
The paper luster usually offers a wider range of colors and better resolution, but suffer from glare which can be a problem under certain lighting conditions.
The luster paper is excellent for photos that are handled bare. They can show fingerprints, but they are usually quite durable, to the point that they can easily erase smudges or fingerprints without damaging the prints.
Profileing the luster paper is often easier, as this paper offers"uncompromising"quality that really brings out the best in color and resolution that your printer can deliver.
They are often not the best option as they can sometimes stick to the surface that mounts against the printed side of the paper.
Also keep in mind that if you decide to go with third-party documents, the gloss paper is the most particular about compatibility with certain printers. That is, it is easier to find luster paper that does not work well with your particular printer or has problems of light loss with certain inks.
Differences between matte paper and luster paper
The difference between matte paper and luster paper is the brilliance of the paper. This difference is most evident when the sheets of paper are exposed under the light. Both types of paper look and feel different to the touch, but are actually made in a very similar way.
Matte paper uses the same chemical layer as the gloss paper. The gloss paper simply has more of the applied coating than the matte paper.
You can think of matte paper as"semi-glossy"or"light-glossy"paper, which has enough coating to add thickness and softness to the paper, but not enough to reflect the paper under the light. The luster paper is slightly thinner than the matte paper, although they are of the same weight.
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- Image via twenga.es