51results about "Record carrier cleaning" patented technology

A digital VTR is capable of reproducing a recorded picture image in a normal mode and a variable speed reproduction mode. During normal speed reproduction, the digital VTR reproduces a recorded picture from data that has been recorded in a normal play area of a recording medium. When the digital VTR is in a variable low speed reproduction mode, it reproduces a picture from data recorded in a first trick play area. When the digital VTR is in a variable high speed reproduction mode, it reproduces a picture from data recorded in a second trick play area. The first and second trick play areas are located at respective tracks that correspond to different azimuths.

A cleaning solution for electronic materials contains dissolved oxygen gas at a concentration greater than atmospheric saturation concentration, 0.1-10,000 mg / liter of ammonia, and 0.1-10,000 mg / liter of hydrogen peroxide in water. Alternatively, the cleaning solution contains dissolved reducing agents, 0.1-10,000 mg / liter of ammonia, and 0.1-10,000 mg / liter of hydrogen peroxide in water. A method for making the cleaning solution of the present invention is provided. A method for cleaning electronic materials using the cleaning solution of the present invention is also provided.

A disc cleaner (10) for cleaning discs (D), which in some aspects can clean vertically oriented discs. The disc cleaner may include a housing (20) for supporting a disc, a drive assembly supported by the housing and engageable with the disc to rotate the disc, and means for applying cleaning agent (B) to a data recording surface of the disc (R) while the disc is supported by the housing. The disc cleaner may include housing that facilitates handling of the disc by its central hole, a drive assembly disposed within the housing, the drive assembly frictionally rotating the disc by its perimeter, and a switch (75) for actuating the drive assembly when the disc is at least partially inserted in the housing.

A cleaning solution and method for removing submicron particles from the surface and / or the bevel of an electronic substrate such as a hard disk media substrate, or an imprint mold used in the manufacturing of the hard disk media or a read / write head assembly part. The cleaning solution comprises a polycarboxylate polymer or an ethoxylated polyamine. The method comprises the step of contacting a surface of the substrate with a cleaning solution comprised of a polycarboxylate polymer or an ethoxylated polyamine. Additional optional steps in the method include applying acoustic energy to the cleaning solution and / or rinsing the surface with a rinsing solution with or without the application of acoustic energy to the rinsing solution.

A chemical cleaning composition for cleaning electronic equipment and electric or electronic appliances, a device for the application of such composition, and a method of cleaning such equipment are disclosed.

A cleaning solution and method for removing submicron particles from the surface and / or the bevel of an electronic substrate such as a semiconductor wafer. The cleaning solution comprises a polycarboxylate polymer or an ethoxylated polyamine. The method comprises the step of contacting a surface of the substrate with a cleaning solution comprised of a polycarboxylate polymer or an ethoxylated polyamine. Additional optional steps in the method include applying acoustic energy to the cleaning solution and / or rinsing the surface with a rinsing solution with or without the application of acoustic energy to the rinsing solution.

An active matrix type liquid crystal display device in the lateral electric field system is disclosed, in which a high aperture factor is ensured even in a narrow pitch case, while also ensuring high contract and reduced vertical stroke is disclosed. In a liquid crystal display device, in which substantially bank-like third insulating film 208 is formed a video signal line 204 and covered by a common electrode 210, a light shield electrode 213 is formed underneath an extension of a common electrode 210 from an edge of a video signal line 204. With this arrangement, a liquid crystal display device is realized, which shields light from the sides of a step part as well as ensuring high aperture factor and high contrast.

The present invention holds a card-like electronic appliance, such as a semiconductor storage medium or an expansion module, and makes it difficult for dust, dirt and moisture to adhere to the card-like electronic appliance. The invention also makes it possible for card-like electronic appliances to be easily and appropriately held, stored, and organized, even when there are a large number of card-like electronic appliances. The card-like electronic appliance holder includes a holder main body with an appliance insertion hole into which at least part of a card-like electronic appliance is inserted, and is provided with a support part with a through-hole for hanging the holder main body. A convex part for engaging a concave part provided in the card-like electronic appliance and holding the card-like electronic appliance is provided inside the appliance insertion hole. Since card-like electronic appliances are held in this way, it becomes difficult for the card-like electronic appliances to become lost when kept separately, and dust, dirt, moisture, etc. can be kept from adhering to the card-like electronic appliance.

The invention provides a disc inspection and rejuvenation / repair system. The inspection system and rejuvenation / repair system may be provided as separate modules or may be combined in an integrated unit. The integrated unit may be manually operated, or may be an automated system comprising a controller and disk handling system Appertaining methods of operating the system and modules are also provided.

A method of cleaning an optical exit face of refractive element of a near field optical scanning apparatus for scanning an optical disc, the method comprising a contacting step, comprising bringing into mechanical contact the refractive element and a cleaning pad such that the optical exit face of the refractive element is non-parallel to a surface of the cleaning pad, the refractive element contacting the surface pad along a contact edge and a first cleaning step, comprising at least a relative movement of the cleaning pad relative to the refractive element at least along cleaning axis, wherein the cleaning axis is in the plane of the surface of the cleaning pad and substantially perpendicular to the contact edge. The invention also related to a near field optical scanning apparatus enabled to clean a refractive element according to the said method.

A cleaning structure for removing dust is constituted of a guiding member having a sliding surface for guiding run of a tape, and a vacuum pressure supply source for making a vacuum pressure effect on a suction space provided inside the guiding member and so on. At the sliding surface of the guiding member, a suction port for making the suction space communicate with an external space is formed, and the opening edge of the suction port on the downstream side in the tape running direction is served as a first dust removal portion for removing dust on the tape surface. The guiding member has a guiding wall having a contact surface which guides at least one tape edge of a tape, and the contact surface is served as a second dust removal portion for removing dust adhering to the tape edge.

A method of manufacturing a disk drive device including: assembling a subassembly by fixing at least a bearing unit, a drive unit and a hub to a base member in a first clean room; cleaning the subassembly in a second clean room; and sealing the subassembly by a sealing member. The first clean room and the second clean room are communicated with each other by a communicating opening for transferring the subassembly, and an atmospheric pressure in the second clean room is equal to or higher than that in the first clean room.

A cleaning solution for electronic materials contains dissolved oxygen gas at a concentration greater than atmospheric saturation concentration, 0.1-10,000 mg / liter of ammonia, and 0.1-10,000 mg / liter of hydrogen peroxide in water. Alternatively, the cleaning solution contains dissolved reducing agents, 0.1-10,000 mg / liter of ammonia, and 0.1-10,000 mg / liter of hydrogen peroxide in water. A method for making the cleaning solution of the present invention is provided. A method for cleaning electronic materials using the cleaning solution of the present invention is also provided.

In an optical disc apparatus for recording and / or reproducing data on an optical disc, a lens holder for holding an objective lens is dynamically moved not only in a direction perpendicular to a data recording face of an optical disc but also in a direction parallel to the data recording face and crossing substantially at right angle with data recording tracks on the data recording face when the optical disc is loaded on the optical disc apparatus so as to remove the stick of the movement of the objective lens due to adhesion of dust, break or deformation of the components.

A method of manufacturing a disk drive device including: assembling a subassembly by fixing at least a bearing unit, a drive unit and a hub to a base member in a first clean room; cleaning the subassembly in a second clean room; and sealing the subassembly by a sealing member. The first clean room and the second clean room are communicated with each other by a communicating opening for transferring the subassembly, and an atmospheric pressure in the second clean room is equal to or higher than that in the first clean room.

The present invention holds a card-like electronic appliance, such as a semiconductor storage medium or an expansion module, and makes it difficult for dust, dirt and moisture to adhere to the card-like electronic appliance. The invention also makes it possible for card-like electronic appliances to be easily and appropriately held, stored, and organized, even when there are a large number of card-like electronic appliances. The card-like electronic appliance holder includes a holder main body with an appliance insertion hole into which at least part of a card-like electronic appliance is inserted, and is provided with a support part with a through-hole for hanging the holder main body. A convex part for engaging a concave part provided in the card-like electronic appliance and holding the card-like electronic appliance is provided inside the appliance insertion hole. Since card-like electronic appliances are held in this way, it becomes difficult for the card-like electronic appliances to become lost when kept separately, and dust, dirt, moisture, etc. can be kept from adhering to the card-like electronic appliance.

A universal media disc cleaning / repairing device including: a main body having a receptacle for snugly receiving a universal media disc; a driving motor mounted in the main body; a disc driving mechanism rotationally drivable by the driving motor, the disc driving mechanism having a disc driving tray upward protruding from a carrier board section of the main body for rotationally driving the universal media disc placed in the carrier board section; a cleaning / repairing tray pivotally mounted on the main body and rotationally drivable by the driving motor. The cleaning / repairing tray is adapted to contact with lower side of a read / write window of the cartridge of the universal media disc placed in the carrier board section.

Methods, systems and apparatus for cleaning phonograph records are disclosed. In some embodiments, a phonograph record can be cleaned in a liquid basin using ultrasonic transducers, wherein the liquid basin has a dampening structure. Also, the ultrasonic transducers are disposed on a flexible wall for reducing vibrations of the cleaner.

The present invention provides a cleaning disk and a magneto-optical disk drive apparatus being simple in structure, adaptable to cleaning disks having various specifications, low in power consumption, low in electromagnetic noise, and preventing damage to the magnetic head and the optical head; the cleaning disk comprises a magneto-optical disk having an information layer, and a head-cleaning member, provided on the magneto-optical disk, for cleaning the magnetic head of the magneto-optical disk drive apparatus, wherein information regarding a magnetic head cleaning condition for setting the operation condition of the magneto-optical disk drive apparatus during cleaning of the magnetic head has been recorded in advance on the information layer of the magneto-optical disk. The magneto-optical disk drive apparatus reads the information regarding the magnetic head cleaning condition so as to set the operation condition properly.

An optical disk polishing device which includes: a disk holder for rotatably holding an optical disk 11, the disk holder installed in a lower fixed portion 10; a cylindrical buff disposed in parallel with the surface of the optical disk 11 and perpendicular to a rotary shaft of the disk holder in an offset manner; a drive motor to rotate the buff 21; and an upper opening-and-closing portion 20 normally urged to an open state to the lower fixed portion 10 by a spring or other member. The device makes it possible to clean a readout surface of the optical disk in a short period of time, and to be offered at a low price owing to the simple and small-sized structure thereof.

A cleaning device for the main shaft CD carrying tray of a CD player includes a sheet body and an attachment layer. The sheet body made of a preset material is to be placed on the tray of a CD player and conveyed into the CD player, having a center-positioning hole to be fitted on the center projecting portion of the CD carrying tray of the CD player. The surface of the attachment layer has proper viscosity or suction property, and the attachment layer has its underside fixed on the circumferential portion of the positioning hole of the sheet body, having its surface range covering at least the circumferential portion of the CD carrying tray, which supports the CD. Impurities attached on the circumference of the CD carrying tray can be adhered and cleared away by the attachment layer of the cleaning device.

By not recording a signal which can be the subject of focussing on a disc, a simple and inexpensive lens cleaner is provided which is able to perform cleaning of an object lens in a simple and reliable manner, without causing the disc to rotate, even in a standard disc device. In order to clean the object lens of the optical disc device, a bristle brush which makes contact with the object lens is provided on the disc, an operating ribbon for operating the disc from the outside of the device is attached to the disc, and no recording face that can be the subject of focussing by the object lens is provided, or alternatively, no signal that can be the subject of focussing by the object lens is recorded, on the face of the disc adjacent to the object lens.

A protective device (1) for protecting an optical head (2) of a disc drive unit against dirt and dust and shock when the disc drive unit is not in use comprises a carrier disc (5) similar to a music CD disc for engaging in the disc receiving area of the disc drive unit. A brush member (6) located on the carrier disc (5) at a position corresponding to the inner data track (10) of a music CD disc is provided for engaging a lens (3) and a peripheral portion (7) of a lens carrier (4) of the head (2) when the head (2) is in the inactive position for protecting the lens (3) and the peripheral portion (7) against dirt and dust. Fibers (15) of the brush member (6) embrace the lens (3) when the head (2) is in the inactive position.

A cleaning structure for removing dust is constituted of a guiding member having a sliding surface for guiding run of a tape, and a vacuum pressure supply source for making a vacuum pressure effect on a suction space provided inside the guiding member and so on. At the sliding surface of the guiding member, a suction port for making the suction space communicate with an external space is formed, and the opening edge of the suction port on the downstream side in the tape running direction is served as a first dust removal portion for removing dust on the tape surface. The guiding member has a guiding wall having a contact surface which guides at least one tape edge of a tape, and the contact surface is served as a second dust removal portion for removing dust adhering to the tape edge.

In an optical disc apparatus for recording and / or reproducing data on an optical disc, a lens holder for holding an objective lens is dynamically moved not only in a direction perpendicular to a data recording face of an optical disc but also in a direction parallel to the data recording face and crossing substantially at right angle with data recording tracks on the data recording face when the optical disc is loaded on the optical disc apparatus so as to remove the sticking of the movement of the objective lens due to adhesion of dust, break or deformation of the components.

A disk cleaning scrub module comprising a scrub lane and a plurality of brushes that rotates and scrub washes a plurality of disks having a diameter D in the scrub lane, wherein a disk-to-disk center distance for scrub wash of the plurality of the disks is S and a ratio of S / D is greater than 1 and less than 1.6 is disclosed.