(ii) Drying condition would also likely affect
the quality of the latent prints. Good latent prints
were obtained from drying with a hair dryer or airdrying for 60 min. The ridge characteristics of gluecoated prints when air-dried within 60 min showed a
slight increase in clarity. However, if the prints were
left longer in the environment, they were typically
adversely affected by natural temperature, humidity
and dust. Nevertheless, some types of glue still gave
better results after air-drying for 1 day, such as N on
wood, OC on tiles and PM on plastic, whilst good
results were obtained from ST under dryer conditions
on plastic, polymer and tiles (Table 1).
(ii) Drying condition would also likely affect the quality of the latent prints. Good latent prints were obtained from drying with a hair dryer or airdrying for 60 min. The ridge characteristics of gluecoated prints when air-dried within 60 min showed a slight increase in clarity. However, if the prints were left longer in the environment, they were typically adversely affected by natural temperature, humidity and dust. Nevertheless, some types of glue still gave better results after air-drying for 1 day, such as N on wood, OC on tiles and PM on plastic, whilst good results were obtained from ST under dryer conditions on plastic, polymer and tiles (Table 1).
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