First of all, thank you for answering.
In order to make it as simple as possible, let's say that it isn't supposed to work in daylight.
I want to say that the projector's purpose is to show pictures like- me and my friends or things like that, and therefore the projector must display the pictures in a good quality.
I think that the level of quality is most affected from the way I print the pictuer on the transparency. SO, should a standard printer produce such a pleasant quality?
(again- Im sorry if my language makes it hard for you to understand me..)