1.GATF digital signal strip
GATF digital signal strip is made of 27l/cm thick dot for the substrate, inlaid with 80l/cm flat net laid 0 ~ 9 number, in the original version of the signal bar in the digital density and background density the same. Specific use is as follows:
The 1GATF digital signal strip is based on the assumption that the coarse net is constant and the dot does not exist. The difference in density between the digits and the ground color is observed with the naked eye. 2 On the original version, the area of ​​1 to 7 digital dots was successively reduced by 3% to 5%, and 7 to 9 were decremented by more than 5%. The area of ​​No. 0 net was the largest, and that of No. 9 net was the smallest. 3 Since it is assumed that the coarse wire does not expand at all, the amount of dot gain is determined based on that digital and background density.
2. Star site control
Thirty-six black and white wedge lines of equal width are emitted from the center of the circle, with a small white point in the center of the circle.
Stars are based on the size of the central white point to determine the size of the dot expansion. The center of the star sign has a large white dot, indicating that the dot expansion is small; the white dot at the center of the star sign is small, indicating that the dot gain is large.
As a test tool for testing dot gains, the star's role is to identify the types of dot gains.
1 The white spots in the center of the star become elliptical, indicating that the outlets have directional expansion. When the center white dot of the star sign shows an ellipse, it indicates that the dot network is expanding around, called horizontal expansion; when the dot network shows an up and down expansion dot network or vertical expansion. 2 If the center of the star appears ghosting, the middle white dot will not only become smaller, but also appear as "8" or "∞" shape, indicating that the dot ghosting and stencil will be affected.
Source: PACK.CN
Wall lamps refer to auxiliary lighting decorative lamps installed on indoor walls, mostly equipped with milky white glass lampshades. The light of the wall lamp is elegant and harmonious, which can put the ring
The environment is decorated with elegance and richness. There are many types and styles of wall lamps, common ceiling lamps, color-changing wall lamps, bedside wall lamps, mirror wall lamps, etc. 2, if the surrounding is narrow, optional
Thin wall light. The power of the wall light source should be consistent with the purpose of use. The installation height of the wall lamp should be slightly higher than the human head.
1. Pay attention to the quality of the lampshade. When buying a wall lamp, first look at the quality of the lamp itself. The lampshade is usually made of glass, while the bracket is usually metal
made. The lampshade mainly depends on whether its light transmittance is suitable, and the pattern and color of the surface should echo the overall style of the room. Whether the corrosion resistance of the metal is good
Well, whether the color and gloss are bright and full are important indicators to check the quality.
2. Light brightness. - - Generally speaking, soft light is better, and the degree should be less than 60 watts. In addition, different types of wall lamps should be selected according to the needs of installation, such as: .
If the room is small, use a single-head wall lamp, if the room is large, use a double-head wall lamp, if the space is large, you can choose a thicker wall lamp; otherwise, choose a thinner one. Last note
It is best to choose a wall lamp with a protective cover for the bulb, which can prevent the wallpaper from igniting and cause danger.
3. Style specifications. The style and specifications of wall lamps should be coordinated with the installation site. For example, double-fire wall lamps can be installed in large rooms, and single-fire wall lamps can be installed in small rooms. The thickness of the wall lamp
Coordinate with the installation site environment. If the surrounding area is large, thick wall lamps can be selected; if the surrounding areas are narrow, thin wall lamps can be selected.
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