Print scale problem in A4 format with hp laserjet 5100tn

[Anonymous]

Hello,

We have a problem when printing from Archicad 9.0

When printing in A4 size, the printer ( hp laserjet 5100tn ) modify the scale of the drawing, so if printing in 1/100 scale,
the printed version of the drawing is 1/105.

This problem does not appear when printing A3 size,
but we do not want to continue using more paper because of a program's bog.

Thanks,
Santiago.