摘要:
In a joint between welded end portions of corrosion-protectively coated steel pipes, a heat-shrinkable tube is positioned so as to cover the outer circumference of a welded portion and the outer circumferences of its adjacent portions, and the heat-shrinkable tube is thermally shrunk in a state in which a gap between the heat-shrinkable tube and the aforementioned portions is kept in a vacuum so that the aforementioned portions are corrosion-protectively coated with the heat-shrinkable outer layer of the heat-shrinkable tube thus thermally shrunk.
摘要:
A method for applying a corrosion-protective coating, with a heat-shrinkable tube, to a joint between welded end portions of corrosion-protectively coated steel pipes, has a configuration comprising the steps of: preparing a coating implement having a releasant layer formed on the outer circumferential portion of the heat-shrinkable tube, and a heating layer formed on the outer circumferential portion of the releasant layer; positioning the coating implement so as to cover the welded portion of the joint and its adjacent portions; thermally shrinking the coating implement in a state in which the gap between the coating implement and the aforementioned portions is kept in a vacuum; and removing the releasant layer and the heating layer, whereby the aforementioned portions are corrosion-protectively coated by the heat shrinkage of the tube.
摘要:
In a floppy disk drive for writing/reading information to/from a floppy disk having a magnetic recording medium of a high memory capacity, a bottom plate of a driver casing defining a floppy disk containing space has a plurality of exhaust ports for expelling dust outside therethrough adjacent a front end opening for loading and unloading the floppy disk to the floppy disk containing space. The driver casing further has sealing elements for closing cable holes formed in the bottom plate and other gaps for blocking air flows from outside into the floppy disk containing space through the cable holes and gaps.
摘要:
A high-density flexible disk drive capable of accessing a large-capacity flexible disk is provided with a large-capacity detecting switch. The large-capacity flexible disk has a case accommodating a magnetic disk medium, with the case being provided with a write protection hole and a single large-capacity identifier hole formed in a vicinity of the write protection hole for distinguishing the large-capacity flexible disk from a small-capacity and a medium-capacity flexible disk. The large-capacity detecting switch of the high-density flexible disk drive is provided at a position corresponding to the large-capacity identifier hole for detecting the large-capacity identifier hole when the large-capacity flexible disk is inserted into the high-density flexible disk drive. In a preferred embodiment, the large-capacity detecting switch is integrally formed in a single unit with a write control switch for detecting open and close states of the write protection hole.
摘要:
In a high-density flexible disk drive, a color of at least a surface of a cover (22) (in addition, a color of at least a surface of an eject button (30)) is different from that of at least a surface of a body of a front panel (20). A user can visually distinguish the high-density flexible disk drive from a normal-density dedicated flexible disk drive in which a color of a surface of a cover is identical with that of a surface of a body of a front panel. Thus, a large-capacity flexible disk can be correctly inserted into the high-density flexible disk drive without being erroneously inserted into the normal-density dedicated flexible disk drive.
摘要:
The present invention aims at reducing the thickness of a floppy disk drive by minimizing a vertical movement of a floppy disk-retaining disk holder and reducing the height of a chassis. The disk holder is provided on both side surfaces of its rear end portion with support shafts, which are connected to the chassis so that the support shafts can be turned. The disk holder becomes pivotable around these support shafts as fulcrums, i.e., the front portion of the disk holder is turned vertically. The upper and lower magnetic heads are formed so that they can be engaged with and disengaged from the floppy disk in conjunction with a pivotal movement of the disk holder.
摘要:
Head load pressure generation means 36 is provided that flexibly supports an upper read/write head 25, via a leaf spring 27 attached to a main body 22, that moves forward and backward along the tracks on a magnetic data recording medium 3, and that adjusts the head load pressure applied to the upper read/write head 25 in accordance with whether a high-density or a low-density magnetic data recording medium is employed. Using this means, the head load pressure and the revolutions of a chucking motor are adjusted in accordance with whether a high-density or a low-density magnetic data recording medium is employed.
摘要:
A flexible disk drive includes a magnetic head carriage, a linear motor for moving the carriage, and a carriage locking mechanism for locking the carriage in response to ejecting action of a flexible disk from the flexible disk drive. A lever unit has an ejecting lever and a locking lever. The ejecting lever is a part of an ejecting mechanism for ejecting the flexible disk from the flexible disk drive. The locking lever is disposed in the vicinity of the carriage, and locks the carriage from movement after the flexible disk is ejected from the flexible disk drive by the ejecting lever. The lever unit is made of non-magnetic material such as resin as one body.
摘要:
A pen recorder for recording a magnitude of a measured signal with a pen which is moved in accordance with a digital servo controller. High performance and function are attained by using ASIC with simple interactive operation. A novel pen mechanism is used for recording. High quality is achieved at low cost by selecting a pen of adequate pen pressure in accordance with recording velocity.