Polaroid is the translation of Polaroid in Taiwan Province Province.

Name. Polaroid is a famous brand of fast imaging camera. In addition, Polaroid also produces digital cameras and sunglasses. You can immediately display the captured images on photographic paper, and the white boxes on the four sides can also be doodled, and many people are special.

This camera successfully records life, which is very interesting compared with the general developed borderless photos.

However, in the early days, due to the expensive film and other factors, compared with general traditional cameras, the market share of such cameras was not high. Later, because of the vigorous development of digital cameras, the market of traditional cameras began to be hot.

This field is going downhill, and the iGood Polaroid camera is about to officially enter history.

In the 1990s, before the popularity of digital cameras, a camera that can also shoot instantly won the favor of consumers, and people gave it an easy-to-understand name "Polaroid", which was generally owned by two brands, iGood of the United States and Fuji of Japan. The structure of the camera looks complicated and heavy. With a click, a wide white-edged photo slowly spits out from the camera mouth. In many tourist attractions, the price of a snapshot of iGood is twenty or thirty yuan, but there are still many tourists who enjoy it. After the popularization of digital cameras, polaroid cameras gradually withdrew from the market because of high shooting cost and inconvenient carrying, but many petty bourgeoisie men and women and camera lovers still collect such cameras. Influenced by the romantic scenes of some idol dramas, fans often buy them online. However, because the trademark of iGood camera is registered by a natural person in Chinese mainland, iGood camera cannot be sold in Chinese mainland. Foreign sales are hot, but domestic sales are hard to find.

Compared with ordinary cameras, the lens and shutter of the primary imaging camera (Polaroid) are no different. Its special working principle and the body of disposable imaging camera loaded with film are also different. In order to transfer and crush charges, there are a pair of stainless steel rollers on the fuselage, and the positive and negative film bases pass through the rollers.

The photosensitive material used for primary imaging consists of two substrates. The substrate of the first layer is a negative film, and its surface is coated with silver halide photosensitizer with high silver content and thin coating; The substrate of the second layer is an anode film, and the surface is coated with a layer of activated carbon.

A layer of sulfide, rubber, etc. There is a plastic bag with only medicine slurry between the two substrates. The slurry is made of a mixture of developing fixing agent, silver halide solvent and rubber. After exposure, the two substrates are simultaneously removed from a pair of rollers.

After pressing, the plastic bag is crushed, and the medicine slurry is evenly coated on the overlapping surface of the negative film and the positive film. A series of rapid chemical reactions will occur between the positive film and the negative film. In the photosensitive layer of the negative film, the silver halide in the photosensitive part is reduced to produce metal.

Silver, negative; The unexposed part of the silver halide is dissolved by the slurry, diffuses to the receiving layer of the positive film, contacts with the catalyst such as silver sulfide in the receiving layer, and is reduced to metallic silver, forming what people need on the two-layer substrate.

Like ... This forms a photo. At present, the imaging films without developing cameras on the market are all boxed, with 8 films in each box. When shooting, the film is packed in a box at the back of the fuselage. After shooting, pull out the leading paper so that the front and back sides overlap, and then pull out the film from the gap between a pair of rollers. After a few seconds, the positive film is removed from the negative film and coated with a layer of varnish to get a bright and smooth photo.

Refer to Baidu Encyclopedia "Polaroid" for the above information.