Imageclip for white and light color garment for laser does not work with light, gradient and photo images. The polymer is blotchy in those types of artwork.
Here is what I use from pressing the two sheets together to pressing the imaging sheet on the shirt:
1) Set the press to low pressure with nothing between platen. Clamp a strip of printer paper on one corner. Pull the paper. The paper should pull out with small resistance.
2) Set the temp at 210F.
3) Set the timer to 10 seconds.
4) Press the two sheets for 10 seconds.
5) Open the press.
6) Cover the two sheets with silicon baking sheet
7) Press it again for another 5 to 10 seconds.
8) Wait 5 t0 10 seconds before peeling the sheets apart.
Note: Do empirical test between 5 to 10 seconds that will produce the least amount of polymer speckles. Some speckles will not show on the garment. I have pressed transfer with fair amount of speckles on pastel especially Safety Green shirts with no issues.
9) Do not remove the silicon sheet. It keeps the two sheets hot while being peeled
10) Lift the corner of the silicon sheet to gain access to the corner of the top sheet.
11) Peel both the silicon sheet and the top sheet together, while keeping the pair close to the lower platen, with even motion.
The green sheet should have a very faint trace of toner on it. The red sheet should have even coat of polymer and very little speckle of polymer left behind in unprinted areas.
The silicon baking sheet does make a difference.
Pressing the transfer on the shirt:
1) Set the temp to 375F
2) Set dwell to 15 seconds
3) Set pressure to very heavy
4) Preheat the lower platen by clamping and locking the upper platen for 6 to 10 seconds
5) Lay the shirt on the lower platen then press for 6 seconds to remove moister and wrinkle.
6) Locate and align the imaging sheet (Red)
7) Press for 15 seconds
8) Open the press
9) Wait 10 seconds to let the polymer cool a little so it will set on the shirt
10) Press again for 5 to 6 seconds
11) Peel the transfer diagonally in smooth and even motion starting from the top corner. Do not lift the transfer while peeling. Keep it as close to the lower platen to keep the shirt fibers from lifting up.
12) Stretch the shirt on its sides.
13) Cover the image with parchment paper then press for 5 to 6 seconds for durability. Do not use Teflon sheet. Polymer tends to stick on the Teflon, which can cause ghosting on the next shirt, especially when it is worn.
The silicon sheet in the images below is Silpat which cost a little more than the other brands sold in department stores. I use both and they work equally well.