ES449818A1 - Device for positioning original disk for energy beam recorder - Google Patents

Abstract

Improvements in disk recording devices by energy beam, of the type in which signals are recorded directing the energy beam towards a master disk, whose energy beam has characteristics representative of the signals to be recorded and having the master disk characteristics sensitive to the energy beam; characterized in that a frame is arranged in combination; a base plate attached to the frame; a turntable to hold a master disk; means attached to the base plate to rotatably hold the turntable; means coupled to the turntable to produce the rotation movement thereof; a cover plate mounted to the frame, whose cover plate defines a recording chamber, surrounding the turntable, in cooperation with the base plate; a car; bearing means secured to the cover plate to support the translation movement of the carriage relative to the cover plate; a recording column, to provide a beam of energy representative of the signal; the recording column being held to the carriage to effect a translation movement therewith, the carriage and the cover plate having openings through which a part of the recording column protrudes, entering the recording chamber to direct said energy beam towards the master disk held by the turntable; the opening of the cover plate having dimensions that allow the translation movement of the recording column; the carriage bearing devices being oriented in such a manner that the translation movement of the carriage results in a movement of the energy beam along a path radially with respect to the center of the turntable; means coupled to the carriage to produce the translation movement of the recording column in correlation with the rotational movement of the turntable, so that the energy beam performs recording along a spiral groove on the master disk, a device of positioning of the electronic beam comprising a platform, whose platform is located inside the recording chamber and is placed adjacent the outer perimeter of the master disk held by the turntable, the platform having a surface oriented in coincidence with a surface of the master disk held by the turntable that is sensitive to the energy beam also serving the means that produce the movement of translation to selectively position the recording column aligned with the platform to be able to direct the beam of energy on the surface in coincidence of the platform of placement in order to detect relevant characteristics of the beam of energy; means to rarefy in a way the recording chamber is read; and means coupled between the translatable recording column and the opening of the cover plate to prevent air from entering the recording chamber through the opening of the cover plate, when the vacuum is formed in the recording chamber. (Machine-translation by Google Translate, not legally binding)