It becomes quite easy to calculate over one hundred million pixels computer-generated hologram of three
dimensional objects, even with normal personal computers. On the other hand, it is not so easy to output the
calculated result as a hologram that must have micron order resolution for practical three dimensional displays.
It is possible to use the electron beam writer and the laser plotter, which are used to make masks for integrated
circuits. However, these equipments are quite expensive and not suitable for personal use. There have been
reported some results of compact and inexpensive direct fringe printing. They use a laser and an x-y stage,
and the fringe pattern is written point by point, which takes very long time. We are developing area by area
writing printer, which consists of the laser, the x-y stage and a liquid crystal panel as a spatial light modulator.
A fractional part of the entire holographic fringe is displayed on the liquid crystal panel, and the demagnified
image of it is recorded on a holographic plate. Then the plate is translated by the x-y stage to write next part
of the fringe. The system configuration and preliminary results are described.