Abstract: The present invention addresses the problem of providing a cylinder liner for insert casting, with which the bonding strength between a cylinder liner and a cylinder block can be improved by reducing voids generated on the cylinder block. The problem is solved by a cylinder liner for insert casting which includes plural projections on its outer peripheral surface and satisfies the following (i) and (ii): (i) the number of the projections is 5 to 50 per 1 cm2 on the outer peripheral surface, and (ii) when two 15.2 mm×0.03 mm lines are set in parallel with a gap of 3.8 mm therebetween at an arbitrary position on the outer peripheral surface of the cylinder liner, the total number of projections that are in contact with the two lines is 8 or less.

Abstract: The present invention addresses the problem of providing a cylinder liner for insert casting, with which the bonding strength between a cylinder liner and a cylinder block can be improved by reducing voids generated on the cylinder block. The problem is solved by a cylinder liner for insert casting which includes plural projections on its outer peripheral surface and satisfies the following (i) and (ii): (i) the number of the projections is 5 to 50 per 1 cm2 on the outer peripheral surface, and (ii) when two 15.2 mm×0.03 mm lines are set in parallel with a gap of 3.8 mm therebetween at an arbitrary position on the outer peripheral surface of the cylinder liner, the total number of projections that are in contact with the two lines is 8 or less.

Abstract: A portable information terminal apparatus includes a portable information terminal unit having a display surface capable of displaying the information and a cradle on which the portable information terminal unit can be detachably mounted. When the portable information terminal unit is loaded on the cradle, data can be transmitted/received to or from another electronic equipment through the cradle. The portable information terminal apparatus includes a lock mechanism for switching the portable information terminal unit between a locked state and an unlocked state when the portable information terminal unit is loaded on the cradle. The portable information terminal unit includes an information readout unit for reading out the contact information and a controlling unit for controlling the lock mechanism when the information readout unit has read out the preset contact information.

Abstract: A portable information terminal apparatus includes a portable information terminal unit having a display surface capable of displaying the information and a cradle on which the portable information terminal unit can be detachably mounted. When the portable information terminal unit is loaded on the cradle, data can be transmitted/received to or from another electronic equipment through the cradle. The portable information terminal apparatus includes a lock mechanism for switching the portable information terminal unit between a locked state and an unlocked state when the portable information terminal unit is loaded on the cradle. The portable information terminal unit includes an information readout unit for reading out the contact information and a controlling unit for controlling the lock mechanism when the information readout unit has read out the preset contact information.

Abstract: The present invention provides a disk drive, a loading/unloading apparatus, and a method for controlling the apparatus, capable of improving the reliability of data by performing stable speed control.