When developing PCB Laminate Photo board the image is developing off, what steps can I take to prevent this please?

This can be caused by a number of factors the common ones are:-

  1. Poor density artwork, check the image is opaque.

2. Developer solution is to strong, dilute the developer.

3. Developer solution is to hot, check the temperature.

4. Resist has being exposed to stray white light, ensure the boards are correctly protected from stray white light during the processing stages.