Abstract: This invention aims to provide a method of lapping a bevel gear effectively by placing a gear-shaped tool whose axis has the same relation with the axis of the bevel gear as those of hypoid gears. In a double mode, gear-shaped tools are placed whose axes lie in a position offset with respect to the axes of the first gear and the second gear and have the same relation as those of hypoid gears. The first gear is engaged with one gear-shaped tool and the second gear is engaged with the other gear-shaped tool, while lapping liquid is supplied to engaging portions, thereby lapping engaging surfaces of toothed portions of the first gear and the second gear.

Abstract: A finishing machine for internal spline tooth surfaces which comprises a holding device for holding a work having the internal spline tooth surfaces, a grinding stone having a plurality of tooth portions for simultaneously processing a plurality of tooth portions in the work, and a vibrating device for vibrating the grinding stone with a high speed in the axial direction of the work.

Abstract: An electron multiplier includes an improved resistor assembly for applying relevant voltages to respective dynodes. Resistor patterns are printed on one surface of an insulation substrate. Each resistor pattern is connected to one end of one of a plurality of conductor patterns which are also printed on the same surface of the insulation substrate, so that each resistor pattern is sandwiched between adjacent conductor patterns to provide a predetermined resistance therebetween. The other end of each conductor pattern extends to a corresponding insertion hole formed on the insulation substrate. One end of a conductor element, which may be a lead, wire, or other wire shaped conductor, is inserted into the corresponding insertion hole and electrically connected to its corresponding conductor pattern. At least the area around where the conductor pattern is connected to the conductor element and also areas around resistor patterns are covered with an insulating seal material.

Abstract: A plasma discharge apparatus formed with a plasma chamber in which discharge is carried out wherein use is made, as the discharge gas sealed in the plasma chamber, of a mixed gas represented by Ne.sub.100-x Ar.sub.x A.sub.y (wherein, A is Ar, Kr, and/or Xe, x is 10 to 30 percent by volume, and y is 1 to 10 percent by volume). Note that when Kr and Xe are included as A, it is preferable that the Kr be included in an amount of 1 to 5 percent by volume and the Xe in an amount of 1 to 5 percent by volume.

Abstract: An electrified portion electric-potential, exposed portion electric-potential, and developing biasing electric-potential are controlled so as to obtain a constant ratio between an input level in exposure to generate the electrostatic latent image and the density associated with the toner-made image resulting from the developing for said electrostatic latent image. A target electric-potential determination table obtains therefrom respective target values for the electrified portion electric-potential, exposed portion electric-potential, and developing biasing electric-potential, wherein the target values obtained may vary depending on variation in the relevant characteristics due to ambience and/or aging of the developing system. A control-input determination unit determines control-input for controlling the electrified portion electric-potential, exposed portion electric-potential and developing biasing electric-potential so that these potentials equal their respective target values.

Abstract: The electron multiplying device according to this invention comprises an electron multiplying unit including dynodes arranged in a plurality of stages. The electron multiplying unit has an incidence opening for an energy beam to be multiplied to enter through, and has the proximal end secured to a base. There is provided a casing for housing the electron multiplying unit. The forward edge of the casing is secured to the base, and a space defined by the base and the casing houses the electron multiplying unit. The casing has an entrance window formed at a position opposed to the incidence opening. Energy beams enter the electron multiplying unit through the entrance window, but the electron multiplying unit itself is housed in the casing to be protected from surrounding air flow and unnecessary energy beams not to be measured.

Abstract: There is disclosed a data processing apparatus capable of providing a desired output print regardless of the size of print data by modifying the density of the print. For this purpose there is provided a processing unit for determining the print density based on data associated with the printing medium used in a printing unit.

Abstract: The present invention relates to a printer which can print in at least two print colors and is especially capable of outputting a desired print color. The printer comprises a printing unit having plural developing colors, and a printer control unit which outputs image data, which has been input from host equipment and developed in a bit map memory, into the printing unit. The printer control unit has plural color modulation data, and selects one of these color modulation data for color modulation of the bit map data.

Abstract: A device for controlling an electrophotographic process such that a stable latent image is formed on a photoconductive drum in matching relation to changes in the characteristics of a photoconductor. Deterioration detecting sections classify, among the characteristics of the drum, a plurality of drum deterioration factors including the amount of wear, electrostatic fatigue, fatigue due to exposure, the degree of continuous use, temperature and humidity by a time range such as long-term/short-term/day or by a number-of-copy range such as great amount/small amount/day-amount. The deterioration detecting section quantizes each of such degrees of deterioration of the drum by fuzzy inference. A latent image manipulation value determining section determines a charge manipulation value and an exposure manipulation value by fuzzy inference.

Abstract: A document retrieval system includes an inputting unit for inputting a retrieval condition including one or a plurality of keywords and a weight value for each keyword, an operating unit having first factors corresponding to relationship values, each relationship value being defined as a degree of the relationship between two keywords out of keywords which are predetermined in the document retrieval system and second factors corresponding to importance values, each importance value being defined as a degree of importance of a keyword in each one of a plurality of documents which are predetermined in the document retrieval system, the operation unit generating a relevance value, which represents a degree of relevance in satisfying a user's requirement, for each of the documents on the basis of the retrieval condition input from the inputting unit, the first factors and the second factors, and an outputting unit for outputting the relevance value for each of the documents as a retrieval result.

Abstract: An image forming method for forming an image by transferring toner image formed on a photoconductive element to a paper sheet or similar recording medium. Variable factors affecting image transfer, paper separation and paper transport characteristics are classified. An image transfer state, a paper separation state and a paper transport state are each estimated as a combination of membership functions of the variable factors to determine an image transfer condition, a paper separation condition, a paper transport condition and auxiliary conditions such that control is executed on the basis of the determined conditions.

Abstract: An electrophotographic process control device capable of controlling the supply of a toner in such a manner as to stabilize an image against changes in the characteristics of a photoconductive element and in toner density. At the learning stage of a neural network, data from sensors are applied to the input layer of the network while a latent image gamma characteristic indicative of a relation between the amount of exposure and the potential of an image area is used as learning data to be given via the output layer of the network. At a control stage, the data from the sensors are applied to the input layer of the network, as at the learning stage, and the amount of exposure is so controlled as to set up a desired potential in an image area on the basis of a latent image gamma characteristic obtainable from the output layer of the network.

Abstract: A variable length character string detection apparatus comprises a character collating part which registers a character string and compares each character of an input character string with each character making up the registered character string so as to output character string collating signals which respectively indicate whether or not each character of the input character string coincides with one of the characters making up the registered character string, a partial character string detecting part for carrying out predetermined logic operations on the character string collating signals and for outputting partial character string collating signals which respectively indicate whether or not the registered character string which coincides with the input character string and partial character strings thereof exist, and a detection pattern control part for carrying out a predetermined logic operation on the partial character string collating signals and for outputting collating result signals which respectivel

Abstract: An electrophotographic process control device for controlling the supply of a toner in such a manner as to stabilize images against changes in the characteristics of a photoconductive element and in the concentration of the toner. An image density sensor measures the density of an image formed on a photoconductive drum. A scanner writes read image data representative of a document on the photoconductive drum. A determining section is responsive to the image density from the image density sensor and write image data from the scanner and representative of the area of an image for executing a predetermined fuzzy combination operation by using fuzzy rules registered beforehand and converts a membership function resulted from the operation to a non-fuzzy value to thereby determine a toner supply manipulation value.

Abstract: A document retrieval system employs a keyword connection table which contains relation information of keyword connections respectively coupling two arbitrary keywords which are used for retrieving registered documents. The relation information at least includes a relation name and a relationship describing the relation between the two arbitrary keywords. The relation information may dynamically change depending on a frequency of use of the keywords, that is, by a learning function.

Abstract: A brake control device for vehicles includes a master cylinder, a plurality of wheel cylinders, and an anti-lock control apparatus disposed between the master cylinder and the wheel cylinders of at least one hydraulic circuit. The anti-lock control apparatus includes a hydraulic pump, a reservoir and a changeover device which is selectively changed over at least between a first condition which permits an increase in the hydraulic pressure of the wheel cylinders of at least one hydraulic circuit and a second condition which permits an decrease in the hydraulic pressure of the wheel cylinders of at least one hydraulic circuit in response to the locking condition of the road wheels.

Abstract: A document retrieval system retrieves a registered document from a document database responsive to a designated retrieval condition including one or a plurality of designated keywords. The document retrieval system includes a storage for storing keyword relationships which indicate relationship values of keywords and relations of the keywords and registered documents, an input part for designating a retrieval condition including one or plurality of designated keywords, where the retrieval condition determines a registered document which is to be retrieved from the storage, a selector for selecting a plurality of keyword relationships based on the retrieval condition and for converting the selected keyword relationships into analog signals, an analog operation circuit for calculating a relevance of document based on the analog signals, and a converter for converting the calculated relevance of document into a digital value.

Abstract: Printing is performed with the higher one of the two resolutions designated for text data and image data if these resolutions are different from each other. If in this case the resolution designated for the text data is changed, character patterns based the an optimum number of constituent dots are selected for printing of characters of the designated size in accordance with the text data. If the resolution of the image data is changed, the image data is interpolated.

Abstract: A liquid crystal display device of the type in which thermo-writing is performed by means of irradiation of laser beams, the display device including a laser-sensitive liquid crystal composition exhibiting a maximum absorption at or near the wavelength of the impinging laser beam with which the display device is to be used. The specific improvement of the present invention comprises including in the liquid crystal composition at least two types of laser-responsive dyes, each being present in an amount less than its solubility limit in the liquid crystal composition, and each of the dyes evidencing a maximum absorption at or near the wavelength of the laser beam. In an embodiment, the dyes are chosen from the class of squarilium dyes.

Abstract: A communication network structure including a plurality of communication networks, and a plurality of router hosts for coupling the communication networks. The router hosts which are directly connected to an arbitrary communication network store as a whole the host numbers of all of the terminal hosts which are directly connected to certain ones of the communication networks. The certain communication networks are indirectly coupled to the arbitrary communication network through the router hosts. The router hosts which are directly connected to the arbitrary communication network do not store the host number of a terminal host which is directly connected to the arbitrary communication network.