摘要:
An electrophotographic photoreceptor comprising a photoconductive layer comprising a photoconductor, a support for the photoconductive layer and a surface layer formed on the photoconductive layer and comprising a curable resin film and an inorganic insulator pieces having a size larger than the film thickness of the curable resin film. In order to prevent the image blurring of an a-Si:H photoreceptor, on the outermost surface of the photoreceptor was formed a surface layer having a structure in which inorganic insulator pieces have protruded from the curable resin film. Since the curable resin is of high resistance and shows no quality change by corona irradiation, and besides the protruding inorganic insulator pieces prevent the abrasion of the resin, the surface layer having a long life and excellent humidity resistance, durability for corona irradiation and abrasion resistance can be realized. Further, by covering the surface layer with a fluorine-containing lubricant, the surface layer having a low friction coefficient and excellent cleaning characteristics is obtained, and besides the resin constituting the surface layer absorbs little moisture. As a result, it becomes possible to use the a-Si:H photoreceptors without a heater. Also, the surface layer of the present invention can be removed and then re-formed.
摘要:
An electroluminescent device including dielectric films each of which consists of first regions made of a material with a strong self-healing type dielectric breakdown characteristic, second regions made of a material with a strong propagating type dielectric breakdown characteristic, and mixed regions consisting of a mixture of these two materials, the first and second regions being arranged alternately in the film thickness direction with the mixed regions therebetween, the mixing ratio of these two materials in the mixed regions changing in such a manner that the ratio of one material gradually decreases from a region of this material toward the adjacent region of the other material, that is, the ratio of the other material increases. Thus, the changes in the mixing ratio of these two materials of the dielectric films in the film thickness direction are continuous and periodic. These dielectric films, with a high breakdown field strength, make it possible to obtain an electroluminescent device having a large drive voltage margin and providing a luminescence of high brightness.
摘要:
A thin film EL element which comprises an insulating substrate, a transparent electrode, a first insulating layer, a light-emitting layer, a second insulating layer and a back side electrode, successively laid one upon another, at least one of the first and second insulating layers being composed of a material having a perovskite crystal structure, for example, a layer of SrTiO.sub.3, PbTiO.sub.3 or BaTiO.sub.3, particularly a SrTiO.sub.3. The material having the perovskite crystal structure has an increased (111) plane orientation such that the diffraction intensity ratio of (111) plane to (110) plane, I (111)/I (110), is more than 0.5. The material can be a single crystal, having (111) plane orientation. The material is deposited by sputtering, at substrate temperatures of not less than 200.degree. C. and up to the softening point of the insulating substrate, and at a pressure of not more than 1.times.10.sup.-2 Torr. The material has a high dielectric constant, a high dielectric strength and thus has a high reliability of element performance with a low driving voltage.
摘要:
In an electroluminescence element including light emitting layers emitting light by applying AC voltages thereto the light emitting layer consists of a light emitting layer emitting red light and a light emitting layer emitting bluish green light and a blue filter transmitting blue light and a green filter transmitting green light are disposed on the light emitting surface side of the bluish green light emitting layer. In this way it is possible to take out red, blue and green lights at an approximately equal brightness level and to realize full color.
摘要:
A thin film electroluminescent (EL) device includes a pair of opposing electrodes formed on a substrate of a transparent electrical insulator, and an EL layer formed between the electrodes and covered at both surfaces with insulating layers respectively. Strontium sulfide is used as a host material of the EL layer, and its crystals tend strongly to have a (200) orientation, so that the resistance to free transit of electrons participating in emission of luminescence is substantially eliminated to ensure a higher brightness.
摘要:
A thin film electroluminescent (EL) device comprises a pair of opposing electrodes formed on a substrate of a transparent electrical insulator, and an EL layer formed between the electrodes and covered at both surfaces with insulating layers respectively. Strontium sulfide is used as a host material of the EL layer, and its crystals tend strongly to have a (200) orientation, so that the resistance to free transit of electrons participating in emission of luminescence is substantially eliminated to ensure a higher brightness.
摘要:
An electroluminescent device comprising an electroluminescent layer capable of emitting light under application of AC voltage, the electroluminescent layer comprising strontium sulfide as a matrix and containing at least one of halides and sulfides of cerium, europium, thulium, terbium and samarium, and having a lattice constant of not more than 6.04 .ANG. and a half-width value at the (111) face of not more than 0.21 degree has a higher brightness than an electroluminescent device having an electroluminescent layer comprising ZnS as a matrix.
摘要:
Provided is one of labels 101, 120, 130 and 140, top layer materials formed on a printing medium 201, 246 and 266, information-bearing media 301, 330, 350 and 360, a solid fuel 401, and a wristband clip 510, having the function of absorbing carbon dioxide to which a new carbon dioxide absorbent is added. Provided are also carbon dioxide reduction methods of absorbing carbon dioxide by burning the same.
摘要:
A powder magnetic core with improved high frequency magnetic characteristics and reduced eddy current loss is manufactured by a manufacturing method including the steps of (a) providing coated soft magnetic particles which are particles composed of soft magnetic material which each have been coated with an insulating coating, and insulator particles; (b) forming a magnetic layer by press molding the coated soft magnetic particles in a mold assembly; (c) forming an insulator layer on the magnetic layer by press molding the insulator particles in the mold assembly; and (d) repeating the steps (b) and (c) to fabricate a laminate of alternating magnetic layers and insulator layers and provide the powder magnetic core.
摘要:
Disclosed is an image pickup device, by which cut resistance at the time of cutting a wafer lens is reduced, high production efficiency is maintained, and excellent optical characteristics are obtained. The image pickup device has a first lens block, a second lens block, a spacer, and a sensor unit. The side surface section of the first lens block, the side surface section of the second lens block, and the side surface section of the spacer are formed on the same plane. A lens cover that covers the first and the second lens blocks is provided in a step formed by respective side surface sections of the first lens block, the second lens block and the spacer, and the side surface section of the sensor unit.