摘要:
An electron emission device comprising an electron emission element (1) having a lower electrode (2), an upper electrode (5) consisting of a thin film, the surface of the upper electrode (5) being exposed to external space, and a semiconductor layer (4) formed between the lower electrode and the upper electrode, a counter electrode (21) provided to face the upper electrode (5) across the external space, a fine particle charging voltage control unit (22) for applying a voltage that charges fine particles deposited on the surface of the upper electrode (5) to between the upper electrode (5) and the lower electrode (2), and flying voltage control unit (23) for applying a voltage that sends charged fine particles flying from the surface of the upper electrode (5) to between the upper electrode (5) and the counter electrode (21), wherein the fine particle charging voltage control unit is operated to charge deposited fine particles, and the flying voltage control unit is operated to sent charged fine particles flying toward the counter electrode (21).
摘要:
According to a toner and a manufacturing method of the present invention, the toner, which is composed of a binding resin component precipitated in particle shapes with a coloring agent component dispersed in the binding resin component, is produced by dissolving the binding resin component in a supercritical fluid (a SCF), blending the coloring agent component in the SCF, and lowering solubility of the binding resin component for precipitating the binding resin component in the particle shapes. Even when the coloring agent content is increased, by the SCF, the toner can maintain dispersibility of the coloring agent component in the binding resin component precipitated in the particle shapes, meanwhile coloring power is also maintained thereby. Therefore, the toner can promote miniaturization of an image forming apparatus using the toner.
摘要:
A tracking control device for a magnetic recording/reproducing apparatus arranged in such a manner that a head unit having a plurality of magnetic heads is successively moved in the widthwise direction of a magnetic tape for switching tracking positions so that data recording/reproducing is, by each of the plurality of magnetic heads, performed along a plurality of data tracks formed on the magnetic tape in parallel to a direction in which the magnetic tape moves. The tracking control device has at least two servo signal reproducing heads provided integrally with the head unit and provided for the purpose of reproducing servo signals for tracking use from a plurality of servo tracks formed in parallel to the data tracks on the magnetic tape, and movement control unit for controlling, at each of the tracking positions, movement of the head unit in the widthwise direction in accordance with the difference in two servo signals reproduced by adjacent two of the servo signal reproducing heads corresponded to each of the tracking positions.
摘要:
A serpentine magnetic tape recording/reproducing system includes a combination head (21) having a plurality of magnetic heads (W,R). A head positioning system including a head operating unit (100) in conjunction with a head moving unit (110) changes the position of each head relative to a width of the tape (23) whereby each head can traverse a plurality of tracks (T). A light emitting unit (36) is disposed at a position confronting a first side of the magnetic tape for emitting light across the width of the magnetic tape (23). A light receiving unit (33) comprising a plurality of light receiving elements (34, 35) is disposed at a position confronting a second side of the magnetic tape for receiving the light emitted from the light emitting unit (36). The plurality of light receiving units (34, 35) are so disposed that outputs from the units (34, 35) have a predetermined relation which governs feedback control including at a time when the magnetic heads are changing tracks. The light receiving units (34, 35) are particularly positioned relative to the tracks (T) and with respect to one another.
摘要:
A magnetic recording and reproducing apparatus utilizing a magnetic tape in a cassette, the tape being driven by reels and information data being recorded or reproduced on or from the magnetic tape. The apparatus includes a mechanism for pulling or storing the magnetic tape out of or in the cassette which mechanism includes a pair of guide rollers for restricting the running path of the magnetic tape, the guide rollers being movable between an unloading position and a loading position. A magnetic head, which can be a multi-track magnetic head having a plurality of magnetic heads, the number of which is defined to be smaller than the number of tracks standardized as a track format on the magnetic tape, records or reproduces information-data when the guide rollers are in their loading position and the head is allowed to vertically move each time the running direction of the magnetic tape is changed.
摘要:
An electron emission element (1) includes an electrode substrate (2) and a thin film electrode (3), and emits electrons from the thin film electrode (3) by voltage application across the electrode substrate (2) and the thin film electrode (3). An electron accelerating layer (4) containing at least insulating fine particles (5) is provided between the electrode substrate (2) and the thin film electrode (3). The electrode substrate (2) has a convexoconcave surface. The thin film electrode (3) has openings (6) above convex parts of the electrode substrate (2).
摘要:
The present invention provides an electron emitting element, comprising: a first electrode; an insulating fine particle layer formed on the first electrode and composed of insulating fine particles; and a second electrode formed on the insulating fine particle layer, wherein the insulating fine particles are monodisperse fine particles, and when voltage is applied between the first electrode and the second electrode, electrons are discharged from the first electrode into the insulating fine particle layer and accelerated through the insulating fine particle layer to be emitted from the second electrode.
摘要:
An electron emitting element includes an electrode substrate, a thin-film electrode, and an electron acceleration layer provided between them. The electron acceleration layer includes a fine particle layer containing insulating fine particles, which is provided on a side of the electrode substrate, and a deposition of conductive fine particles, which is provided on a surface of the fine particle layer. In the electron acceleration layer, a conductive path is formed in advance, and the deposition has a physical recess which is an exit of the conductive path and which serves as an electron emitting section. Electrons are emitted via the electron emitting section. With the arrangement, it is possible to realize an electron emitting element which prevents that an electrode on an electron emission side gradually wears off along with electron emission and which can maintain an electron emission characteristic for a long period.
摘要:
According to an electron emitting element of the present invention, an electron acceleration layer sandwiched between an electrode substrate and a thin-film electrode contains (i) insulating fine particles and (ii) at least one of (a) conductive fine particles having an average particle diameter smaller than an average particle diameter of the insulating fine particles and (b) a basic dispersant. The electron acceleration layer has a surface roughness of 0.2 μm or less in centerline average roughness (Ra). The thin-film electrode has a film thickness of 100 nm or less. As such, according to the electron emitting element of the present invention, it is possible to reduce the thickness of the thin-film electrode to an appropriate thickness. Accordingly, it is possible to increase electron emission.
摘要:
The present invention provides an electron emitting element which has good energy efficiency and which is capable of controlling a value of current flowing in an electron acceleration layer and an amount of emitted electrons by adjusting a resistance value of the electron acceleration layer and an amount of generated ballistic electrons. An electron emitting element 1 includes an electron acceleration layer 4 including a fine particle layer containing insulating fine particles. In the electron emitting element 1, Ie=α·R−0.67 where Ie [A/cm2] is electron emission current per unit area during the voltage application and R is element resistance [Ω·cm2] per unit area, the element resistance being obtained by dividing (a) a voltage applied between the electrode substrate 2 and the thin-film electrode 3 during the voltage application by (b) current in element per unit area which current flows between the electrode substrate 2 and the thin-film electrode 3 during the voltage application, and where α is not less than 2.0×10−6, and the electron emission current Ie is not less than 1.0×10−9.