Abstract: A member assembly includes a first member and a second member joined to the first member. The first member includes an engagement piece provided with an engaged portion. The second member includes an engaging portion to be engaged relative to the engaged portion, and a hook allowing a tip of the engagement piece to be inserted therein. The hook permits the engagement piece to move in a direction intersecting with an inserting direction of the engagement piece. The engaging portion permits the engaged portion to move by a certain distance in the direction intersecting with the inserting direction of the engagement piece.

Abstract: A member assembly includes a first member and a second member joined to the first member. The first member includes an engagement piece provided with an engaged portion. The second member includes an engaging portion to be engaged relative to the engaged portion, and a hook allowing a tip of the engagement piece to be inserted therein. The hook permits the engagement piece to move in a direction intersecting with an inserting direction of the engagement piece. The engaging portion permits the engaged portion to move by a certain distance in the direction intersecting with the inserting direction of the engagement piece.

Abstract: A cowl top garnish includes a protruding portion that protrudes upward, with its top being situated at an upper position when a vehicle body is viewed in a lateral cross-sectional view. The protruding portion has a front segment that is disposed in along the width of the vehicle and extends from the top in a lower forward direction, and a rear segment that extends from the top in a lower backward direction. The protruding portion is an element having flexibility that allows the front segment and the rear segment to spread when a load acts on the protruding portion from above the top. The front segment has a projecting portion that projects toward the rear segment. The rear segment has a load receiving portion onto which the projecting portion abuts to receive the load when the load acts on the front segment in the backward direction.

Abstract: A cowl top garnish includes a protruding portion that protrudes upward, with its top being situated at an upper position when a vehicle body is viewed in a lateral cross-sectional view. The protruding portion has a front segment that is disposed in along the width of the vehicle and extends from the top in a lower forward direction, and a rear segment that extends from the top in a lower backward direction. The protruding portion is an element having flexibility that allows the front segment and the rear segment to spread when a load acts on the protruding portion from above the top. The front segment has a projecting portion that projects toward the rear segment. The rear segment has a load receiving portion onto which the projecting portion abuts to receive the load when the load acts on the front segment in the backward direction.

Abstract: A water-repellent film that is formed on a solid substrate includes: a molecule (A) including at least one or more of siloxane bonding (—Si—O—) at both ends and a hydrocarbon chain in a middle part; and a molecule (B) including a fluorocarbon chain at one end and at least one or more of siloxane bonding (—Si—O—) at another end, wherein a polymer film is formed at least with the molecule (A) and the molecule (B). This polymer film forms a covalent bond with a surface of the substrate via siloxane bonding (—Si—O—), and the surface thereof is covered with fluorocarbon chains having high water repellency. Therefore, this film prevents the intrusion of alkali ions. Thereby, an ink jet head and an ink jet type apparatus having a water-repellent film that is not destroyed by the long-term contact with alkaline ink can be provided.

Abstract: A method for forming a water-repellent film on a solid substrate. The method includes: preparing a mixed solution of a silane coupling agent (A) including reactive functional groups at both ends and a hydrocarbon chain and a benzene ring in the middle part; a silane coupling agent (B) including a fluorocarbon chain at one end and a reactive functional group at another end; and a chemical material including at least an organic solvent, water and acid catalyst; allowing hydrolysis and dehydration polymerization reaction of the silane coupling agents (A) and (B) to proceed; diluting the solution; applying the solution to the substrate and heating the substrate, thereby forming a polymer film of the silane coupling agent (A) and the silane coupling agent (B). Thus, there is provided a method for producing an alkali resistant water-repellent film at low cost.

Abstract: In manufacturing a nozzle plate for an ink-jet printer including a nozzle hole to jet ink formed so as to penetrate the nozzle plate in the thickness direction thereof and a water-repellent film formed on an ink downstream-side surface of the both sides of the nozzle plate at which the nozzle hole is opened, firstly the water-repellent film is formed by Sol-Gel process, and then the nozzle hole is formed. A thickness of the water-repellent film is formed less than 1 &mgr;m.

Abstract: A water-repellent film that is formed on a solid substrate includes: a molecule (A) including at least one or more of siloxane bonding (—Si—O—) at both ends and a hydrocarbon chain in a middle part; and a molecule (B) including a fluorocarbon chain at one end and at least one or more of siloxane bonding (—Si—O—) at another end, wherein a polymer film is formed at least with the molecule (A) and the molecule (B). This polymer film forms a covalent bond with a surface of the substrate via siloxane bonding (—Si—O—), and the surface thereof is covered with fluorocarbon chains having high water repellency. Therefore, this film prevents the intrusion of alkali ions. Thereby, an ink jet head and an ink jet type apparatus having a water-repellent film that is not destroyed by the long-term contact with alkaline ink can be provided.

Abstract: A method for forming a water-repellent film on a solid substrate. The method includes: preparing a mixed solution of a silane coupling agent (A) including reactive functional groups at both ends and a hydrocarbon chain and a benzene ring in the middle part; a silane coupling agent (B) including a fluorocarbon chain at one end and a reactive functional group at another end; and a chemical material including at least an organic solvent, water and acid catalyst; allowing hydrolysis and dehydration polymerization reaction of the silane coupling agents (A) and (B) to proceed; diluting the solution; applying the solution to the substrate and heating the substrate, thereby forming a polymer film of the silane coupling agent (A) and the silane coupling agent (B). Thus, there is provided a method for producing an alkali resistant water-repellent film at low cost.

Abstract: In manufacturing a nozzle plate for an ink-jet printer including a nozzle hole to jet ink formed so as to penetrate the nozzle plate in the thickness direction thereof and a water-repellent film formed on an ink downstream-side surface of the both sides of the nozzle plate at which the nozzle hole is opened, firstly the water-repellent film is formed by Sol-Gel process, and then the nozzle hole is formed. A thickness of the water-repellent film is formed less than 1 &mgr;m.

Abstract: In an optical pickup, an optical guide member is provided in an optical path of light from a light source, and has a plurality of inclined surfaces inclined with respect to a light beam emitted from the light source. A light-receiving element is provided for receiving light and for converting the received light into an electrical signal. The optical guide member and the light-receiving element are contained in a packaging member. The light beam from the light source is reflected by the plurality of inclined surfaces of the optical guide member, and then are directed to a recording medium. The reflected light from the recording medium is directed to the light-receiving element. At least one of dry air and inert gas such as nitrogen gas is charged in the interior of the packaging member at a pressure of 0.5 atm to 1.5 atm, thereby preventing the optical characteristics from being degraded.

Abstract: A magnetic recording medium comprises a substrate (1,2), a magnetic film layer (4), a buffer layer (5), and a hydrogen-containing carbon film layer (6). The buffer layer (5) is made of a material whose crystal structure is bcc-structure and atomic radius is equal to or larger than 0.122 nm, or is made of a material whose crystal structure is diamond structure. The hydrogen-containing carbon film layer (6) shows a Raman spectrum (8) having two peaks at wave numbers of approximately 1550 cm.sup.-1 and 1350 cm.sup.-1 in Raman spectroscopic analysis. This Raman spectrum (8) is expressed by combination of first and second Gaussian curves (9, 10) having respective peaks at wave numbers of approximately 1550 cm.sup.-1 and 1350 cm.sup.-1. And, an integrated intensity of the second Gaussian curve (10) having its peak at the wave-number of approximately 1350 cm.sup.-1 is equal to or less than 3 times of an integrated intensity of the first Gaussian curve (9) having its peak at the wave number of approximately 1550 cm.

Abstract: A magnetic recording medium comprises a substrate (1,2), a magnetic film layer (4), a buffer layer (5), and a hydrogen-containing carbon film layer (6). The buffer layer (5) is made of a material whose crystal structure is bcc-structure and atomic radius is equal to or larger than 0.122 nm, or is made of a material whose crystal structure is diamond structure. The hydrogen-containing carbon film layer (6) shows a Raman spectrum (8) having two peaks at wave numbers of approximately 1550 cm.sup.-1 and 1350 cm.sup.-1 in Raman spectroscopic analysis. This Raman spectrum (8) is expressed by combination of first and second Gaussian curves (9, 10) having respective peaks at wave numbers of approximately 1550 cm.sup.-1 and 1350 cm.sup.-1. And, an integrated intensity of the second Gaussian curve (10) having its peak at the wave-number of approximately 1350 cm.sup.-1 is equal to or less than 3 times of an integrated intensity of the first Gaussian curve (9) having its peak at the wave number of approximately 1550 cm.

Abstract: A magnetic recording medium comprising: a non-magnetic substrate; a ferromagnetic metal thin film provided on the non-magnetic substrate; a filmlike first carbon layer provided on the ferromagnetic metal thin film; and a hard and amorphous second carbon layer provided on the first carbon layer; the first and second carbon layers having first and second Raman spectra based on Raman spectrophotometry, respectively; assuming that when each of the first and second Raman spectra is decomposed into a first band of Gaussian function having a peak in the vicinity of 1380 cm.sup.-1 and a second band of Gaussian function having a peak in the vicinity of 1550 cm.sup.-1 in X-Y rectangular coordinates with an X-axis expressed in cm.sup.

Abstract: A method of forming a film on a substrate by plasma CVD, comprising the steps of: providing a discharge tube in a vacuum chamber; providing a partition wall around the discharge tube; evacuating space between the discharge tube and the partition wall to vacuum; providing the substrate at a position confronting the discharge tube; and effecting plasma discharge in the discharge tube.