Abstract: An optical disk drive has an inserting/ejecting mechanism for performing an insertion and ejection of either a CD mounted on a CD carrier or an MO cartridge and a recording and reproducing mechanism for reading or reproducing with either medium. The inserting/ejecting mechanism has a load mechanism which is activated when a CD and a CD carrier on which the CD has been mounted or a medium as an MO cartridge are inserted in an inserting/ejecting port and moves the medium to the position of a spindle motor for attachment to a motor rotary shaft. In addition, an ejecting mechanism, which is activated on the basis of a medium ejecting instruction, moves the medium to an ejecting position of the inserting/ejecting port after the medium was removed from a spindle motor.

Abstract: Functions regarding a mechanical structure are made common so as to enable both of a CD and an MO cartridge to be used by one apparatus. When the CD as an exposed medium is loaded, the apparatus operates as a CD player. When the MO cartridge as a cartridge enclosed medium is loaded, the apparatus operates as an optical disk drive.

Abstract: A printer comprises a cylindrical platen for supporting and feeding a printing sheet, a pinch roller in resilient contact with the platen to cooperate therewith to feed the cut sheet, and an inclined sheet guide on which a cut sheet is loaded. A leading edge of the cut sheet is inserted into a space between the platen and the pinch roller so that the cut sheet is ready to be compulsorily fed by the platen. When or after a cut sheet is loaded on the sheet guide, the platen is rotated in the reverse direction by a predetermined amount of rotation and then rotated in the forward direction to set the cut sheet at a given print start position. During the reverse rotation of the platen, the leading edge of the cut sheet is pushed up so that the posture of the cut sheet is corrected.

Abstract: In a method and apparatus for changing the line of a sheet to be printed, the sheet is set in a print starting position, in which a front end of the sheet is located in front of bail rollers which feed the sheet together with a platen, and a carriage with a print head and a sheet guide is moved to a predetermined guide position in which the sheet guide is located at or near the center of width of the sheet, prior to every change of line, until the front end of the sheet is held between the bail rollers and the platen.