Abstract: The present invention relates to an electrostatic information recording medium in which a charge retaining layer having high insulating properties is laminated on an electrode, and an electrostatic information recording/reproducing process wherein, while said electrostatic information recording medium is positioned in opposition to a photosensitive member on which a photoconductive layer is laminated, the recording medium is subjected to information exposure with the application of voltage between both electrodes to accumulate electrostatic charges thereon depending upon the dosage of said information exposure, and the electrostatic information thus accumulated is reproduced by potential reading.The present electrostatic information recording medium has an information density as expressed in terms of a high recording capacity of the order of 8.times.10.sup.8 bits/cm.sup.

Abstract: A high-resistance compound semiconductor 12 is epitaxially grown on a low-resistance compound semiconductor 11 and a dielectric reflecting film 13 is formed thereon, thereby forming a monolithic sensor 10. As the low-resistance compound semiconductor 11, a compound semiconductor is used which has a large bandgap so as to enable probe light to pass therethrough without being absorbed and which has a lattice constant and a thermal expansion coefficient, which are close to those of the high-resistance compound semiconductor. In addition, since the low-resistance compound semiconductor 11 also serves as an electrode, a compound semiconductor which has a resistivity of 10.sup.+1 .OMEGA.cm or less is used. Since the shorter the wavelength of the probe light used, the larger the retardation change and the larger the signal output, a compound semiconductor which has a large bandgap is used as the high-resistance compound semiconductor 12 so that light of short wavelength can be used.

Abstract: An electrostatic information recording medium according to this invention includes an inorganic oxide layer 3 and a photoconductive layer comprising a charge-generating layer 4 and a charge-transport layer 5 laminated onto an electrode 2 in this sequence, as illustrated in FIG. 1. To record information, the information is exposed to light while voltage is being applied between the electrode 3 and another opposite electrode, or alternatively voltage is applied therebetween while the information is being exposed to light.After information recording, the electrostatic information recording medium is uniformly electrified on its surface as by corona charging, whereby the information can be easily reproduced in the form of electrostatic information. This recording medium, if tone-developed, can be used as an original plate for electrostatic printing.

Abstract: A photoconductive layer 5 of a photosensitive material 1 is located in opposition to a charge carrier layer 6 of a charge carrier medium 2, followed by connection to a power source 8. The charge carrier medium 2 is then exposed to light 9 having a given wavelength through the photoconductor material 1 to form an electrostatic latent image on the charge carrier layer 6 of the charge carrier medium 2. Subsequently, the charge carrier medium 2 is disconnected from the power source 8 to develop and fix the latent image on the charge carrier layer 1 with toner. Etching is finally carried out, using the thus formed toner image 16 as a mask, thereby removing all portions of the charge carrier layer 6, on which the toner is not deposited, Thereby obtaining a printing plate including a printing area constructed from the toner 16 and charge carrier layer 7 on an electrically conductive substrate 7.

Abstract: An electrode 2c and a pinene polymer recording layer 2a with a molecular weight of 500 to 10000 are successively stacked on a substrate 2c, as shown in FIG. 3 . By carrying out thermal development, information electric charge that is formed on the resin surface is formed into a thermally stable frost image without decay of the information electric charge. Since no photoconductive layer is needed, when transmitted or reflected light is used to reproduce the frost image, there is no effect of the coloring of a photoconductive layer. If exposure is effected under the application of a voltage, since the depth of dimple patterns of a frost image varies in accordance with the quantity of exposure energy, tonal reproducibility is obtained. In addition, it is possible to obtain high resolution and make an original for OHP, a microfilm, a slidefilm, etc. which is of good quality and has high fidelty to the original document.

Abstract: The present invention provides an image-recording process wherein the voltage applied between a photosensitive member 2 and electrostatic information recording medium 1 is put off after the lapse of a given time from the closing of an exposure shutter 13. It is thus possible to move all the generated carriers onto electrostatic information recording medium 1 and accumulate them as charges in an amount corresponding to the quantity of exposure irrespective of a voltage shutter time. It is also possible to electrically charge electrostatic information recording medium 1 or the photosensitive member 2 in advance and put on-off an electrical connection between the electrodes of the photosensitive member 2 and electrostatic information recording medium 1 to control image exposure, thereby dispensing with any external high voltage power source and obtaining a positive image.

Abstract: An electrostatic printing method, wherein a photosensitive member has a photoconductive layer formed on a support member with a conductive layer therebetween is placed face to face with a drum of electrostatic information recording medium, which has an insulating layer formed on a cylindrical conductive layer. Voltage is applied between the photosensitive member and the conductive layer of the electrostatic information recording medium drum. Electric charge is accumulated in the shape of an image on the surface of the electrostatic information recording medium drum, by performing image exposure from the direction of the photosensitive member. Recording film is supplied at the same speed as the rotating speed of the drum on contact or non-contact basis with the drum, and toner development is performed by a developing machine which is installed face to face to the drum with the recording film therebetween. A conductive roller may be provided at a position where the recording medium is separated from the drum.

Abstract: According to the present invention, the photosensitive member and the electrostatic information recording medium are immersed in the toner after image exposure is performed, and the electric field is formed in the gap by short-circuiting between the electrodes of the photosensitive member and the electrostatic information recording medium. Also, bias voltage is applied between the electrodes of the photosensitive member and the electrostatic information recording medium, and the surfaces of the electrostatic information recording medium and the photosensitive member are immersed in the toner. Bias voltage is set to higher than the potential on the unexposed portion and lower than the maximum potential of the exposed portion on the electrostatic information recording medium or the photosensitive member, and toner development of electrostatic latent image is performed with high fidelity on the photosensitive member to form positive or negative image.

Abstract: In the information recording an reproducing method and apparatus according to the present invention, a piece of picture image information is recorded as an analog quantity or a digital quantity an information carrying medium in a planar manner at a high density, charge potential is read for outputting electric signals to correspond to the recorded picture image information and then the outputted signals are printed out by means of various display unit or output device, with high quality and high resolution as well as ease processing of the information. The information carrying medium provides a long period of storage of information and enables stored picture image information to be repeatedly reproduced with a picture quality according to need.

Abstract: A mounting device (30) comprises an integral stamping of sheet metal having a head portion (40) and legs (50) extending downwardly therefrom; the head portion including a latch (48) extending angularly to the plane of the sheet metal and barbs (43, 44) extending in the plane to lock within a slot (74) of a component (70), the legs (50) each including a first portion (52, 54) tapered outwardly and a second portion (52a, 54a) tapered inwardly to provide a spring action transverse to the plane of the device and to the plane of a hole in a board in which the device is mounted. The leg portions (52a, 54a) operate to ease insertion in the hole in a board, and the ends of the said legs are free for cantilever action.

Abstract: There are disclosed a method of delivering pictorial image data per each color obtained by applying color resolution to a manuscript using a color scanner to a sublimation transfer printer to effect a transfer from a sublimation transfer sheet to an image-receiving sheet, thus to make a hard copy of a color image, and a device for implementing such a method. The image data comprises three primary data of cyan, magenta and yellow and black data calculated from the three primary data. Data obtained by applying color and gradation corrections to the four color data are delivered to the sublimation transfer printer. The sublimation transfer sheet is provided with a transfer ink layer of four colors of cyan, magenta, yellow and black. By the operation of the sublimation transfer printer, the ink of each transfer ink layer is transferred onto the image-receiving paper, thus to make a hard copy.

Abstract: There are disclosed a method of delivering pictorial image data per each color obtained by applying color resolution to a manuscript using a color scanner to a sublimation transfer printer to effect a transfer from a sublimation transfer sheet to an image-receiving sheet, thus to make a hard copy of a color image, and a device for implementing such a method. The image data comprises three primary data of cyan, magenta and yellow and black data calculated from the three primary data. Data obtained by applying color and gradation corrections to the four color data are delivered to the sublimation transfer printer. The sublimation transfer sheet is provided with a transfer ink layer of four colors of cyan, magenta, yellow and black. By the operation of the sublimation transfer printer, the ink of each transfer ink layer is transferred onto the image-receiving paper, thus to make a hard copy.

Abstract: The invention provides a novel printing plate suitable for use in a dry-process direct planographic printing without the use of a blanket as used in offset printing and without the use of dampening water as in ordinary planographic printing. The printing plate of the invention is constructed with a substrate of which at least the surface layer is made of a rubbery elastomer with an oleophilic or ink-receptive surface and a pattern-wise layer of an ink-repellent material such as a silicone provided on the surface of the substrate to form the non-image areas of the printing plate while the image areas of the printing plate are formed by the oleophilic surface of the substrate exposed bare. By virtue of the rubbery elasticity of the surface layer of the substrate, satisfactorily sharp printed materials are obtained with the inventive printing plate without the use of a blanket as an intermediate carrier of the printing ink.

Abstract: A very simple and easy method for preparing dry planographic printing plates having a high printing performance and durability in the absence of dampening water is proposed. The method comprises the steps of (a) coating one surface of substrate which is transparent to ultraviolet light with an uncured photocurable silicone, (b) bringing the thus coated surface into direct contact with a surface of a base plate to form a laminate, (c) providing on the other surface of the substrate an image pattern made of a material which is opaque to ultraviolet light, (d) irradiating the laminate with ultraviolet light from above the image pattern and (e) separating the substrate from the base plate to allow a portion of the photocured silicone coating to transfer to the surface of the base plate, and a portion of the uncured silicone coating to stay in situ on the surface of the substrate.