How long does it take to develop the photos?

It takes about ten minutes to half an hour to develop black and white film by itself. Search the tutorial online, it is best to learn from the master, and then prepare all the medicines and equipment to set off.

1. development: preheat the rolled developing tank in a water bath for 5 minutes. (The temperature is measured at 20 degrees) Add at least 400ml of developer in preheating and tap the bottom of the developing tank to avoid air bubbles remaining. Timing (continuous stirring is required for the first 30 seconds, and this operation is always continuous stirring, with a frequency of 1-2s) and development for 9 minutes. Then pour the developer into the beaker.

2. Stop developing: Immediately after pouring out the developing solution, pour in the stopping developing solution (measure the temperature) and keep stirring. After stopping developing for 30s, pour out the stopping developing solution.

3. Fixation: Immediately pour the fixing liquid (measure the temperature), then time it and keep stirring. After fixing 10 minutes, pour out the fixing solution.

4. Water washing: add pure water for preliminary water washing, and then continuously wash with tap water for 10 minute (the temperature difference between water washing temperature and developer shall not exceed 5℃).

5. Drying: put the washed film in front of the air conditioner to dry.

Photo printing belongs to digital printing, and digital printing technology belongs to the cutting-edge technology of photosensitive industry. Digital printing adopts the method of color expansion. Digital printing exposes digital images on color paper and outputs color photos. Digital printing is a high-speed, low-cost and high-quality method to make digital photos.

A photo in the orthodox sense refers to a silver salt print, which is a color image obtained by printing, but it is not a photo in the real traditional sense obtained by other means.

Printing photos is different from pictures. The concept of pictures is very big. The pictures stored on your mobile phone, computer and camera all belong to pictures, and they are all electronic pictures. Newspapers and periodicals in life, posters of various sizes are also pictures. Printed photos are more realistic than printed photos, and the image effect is more lasting.

Development of developing photos

Technology upgrading

With the popularity of digital cameras and the rapid development of IT digital wave, traditional cameras are gradually replaced by digital cameras, and people's photography consumption patterns have also changed. From simple photography to printing, to digital photography, appreciation, sorting and printing, the demand for digital printing has arisen. Because of the better quality of digital printing, we can be sure that in the near future, traditional photo printing will be completely replaced by digital photo printing.

Raise the threshold

Many printing service operators and other investors are very optimistic about the digital printing market, but the biggest obstacle to its entry into the market is the high procurement cost of laser digital printing equipment. In the market, foreign equipment needs at least one million yuan, while domestic equipment needs several hundred thousand yuan, but it is also a big investment for the majority of small and medium-sized printing operators. Even if there is capital investment, if the return on investment is calculated, it will take at least several years for any kind of equipment to recover funds only from the cost of recovering equipment. Therefore, the purchase cost of equipment is the biggest obstacle to enter the digital printing market.