Abstract: Apparatus for displaying an image wherein the apparatus includes an image light source that transmits light along a first direction. A transparent plate having forward facing and rearward facing opposing surfaces is provided. The rearward facing surface has a reflective layer and is oriented at an oblique angle relative to the first direction so that image light is reflected therefrom along a second rearward direction toward the operator. Light control means is interposed between the light source and the transparent plate in such a manner that it restricts viewing of the image at locations forward of the plate while permitting viewing of the image at locations rearward of the plate.

Abstract: A printer for a portable computer receives the computer into a well and includes a connector plug that receives a connector socket of the computer. The printer restricts the orientation of the computer when the computer is inserted into the well so that the computer connector can be engaged with the printer's connector only after the computer has been placed in the well and moved along a predetermined axis.