What Are the Precautions for Using Photo Paper?

I. Basic Construction of Photo Paper:

1. Paper Base: Composed of quality fiber paper adhering to standards. It must be white, uniform, and resistant to deformation.

2. Barium Sulfate Layer: A thin layer enhancing whiteness by filling minor defects.

3. Resin-Coated Layer: Applied to prevent chemical liquid penetration during development. Without this layer, it's termed base paper; with it, it's coated photo paper.

4. Photosensitive Emulsion Layer.

5. Surface Protection Layer.

6. 

II. Precautions for Photo Paper:(A) Usage Precautions:

1. Ensure using ink cartridges and photo paper from the same packaging.

2. The glossy side of photo paper is the print side; insert it facing up in the paper tray to avoid printing errors.

3. Avoid touching the print surface to prevent fingerprint marks.

4. If the ink film on the ink cartridge is loose, tighten it following the arrow direction before use.

5. After printing text, avoid immediate contact to prevent smudging and ink bleeding.

(B) Printing Precautions:

1. Avoid prolonged exposure to high temperatures and humidity, which may cause color changes after extended storage.

2. Coated photo paper (resin-coated) may experience emulsion layer detachment due to varying water absorption and thermal expansion rates in different layers over time. Generally, its lifespan is considered no more than 40 years. Properly handled, inkjet prints theoretically have no expiration. Certain specialized imaging processes, when handled correctly, may outlast paper-based prints. Avoid storing in high-temperature, high-humidity, or direct sunlight areas. Unused photo paper should be returned to its original packaging and stored flat.