PERFECCIONAMIENTOS INTRODUCIDOS EN UN APARATO TRAZADOR DE GRAFICOS Y SIMILAR, ESPECIALMENTE PARA MATERIA EN HOJA.

摘要

An automated plotting apparatus has a carriage assembly for positioning an axially elongated pen relative to a plotting sheet supported on a plotting surface in response to command signals received from a controller. A solenoid assembly coaxially surrounds an associated portion of the pen and moves it axially into marking engagement with the sheet. Marking fluid is supplied to the pen from a pressurized reservoir. Pinions driven by a motor mounted in stationary position relative to the plotting surface engage racks mounted on the carriage assembly to move the carriage assembly relative to the plotting surface.