Animating a print out of the printer

Start by opening an image of a printer. Make cutout of the printer to knock out the background.

Create a selection of the paper tray. Press Ctrl+Shift+J to cut paste the selection in a new layer. Move this layer below all the layers in layer order in layer palette.

Create a selection as shown. Press Ctrl+J to copy paste the selection in a new layer.
Create a rectangle for the paper using rectangular shape tool. Press Ctrl+T. Right click the layer and select warp. Adjust nodes to get the shape as shown.
Open any image you want to print.
Press Ctrl+T. Right click the layer and select distort. Adjust nodes to get the shape as shown.
Open animation window. For the first frame hide the printed sheet.

Duplicate frame. Move the blank paper downwards so that it's completely invisible behind the printer.

Click tween button from the animation window. Apply settings as shown.
Duplicate the last frame. Select 14th frame and unhide the printed sheet and move it behind the printer so that though it's visible it's hidden behind the printer.
Duplicate frame. Move the printed sheet out of the printer.
Click tween button from the animation window. Apply settings as shown.

Press Ctrl+Alt+Shift+S to save an optimized animated GIF.