Patent application number | Description | Published |
20090038743 | METHOD OF MANUFACTURING GLASS SUBSTRATE - A glass block is formed by stacking, fixing, and integrating a plurality of thin glass plates having a predetermined thickness. An annular glass block is formed by coring the glass block. Surfaces of an inside circumference and an outside circumference of the annular glass block are ground. The annular glass block of which the surfaces of the inside circumference and the outside circumference are ground are separated into individual annular glass substrates, and separated annular glass substrates are cleaned. Then, edge portions of the inside circumference and the outside circumference of a cleaned annular glass substrate are chamfered. | 02-12-2009 |
20090042493 | CHAMFERING APPARATUS FOR CHAMFERING GLASS SUBSTRATES - A chamfering apparatus is used to chamfer a peripheral edge of a glass substrate. The chamfering apparatus includes a grindstone having a cylindrical hollow end portion; a grindstone driving unit that rotates the grindstone around an axis of the cylindrical hollow end portion; a substrate rotation-driving unit that rotates the glass substrate around either one of an axis of the outer periphery and an axis of the center circular hole; and a pressing unit that presses the grindstone to the glass substrate such that an annular end surface of the grindstone contacts with an edge of either one of the outer periphery and the inner periphery of the glass substrate while the cylindrical hollow end portion of the grindstone faces with one of the outer periphery and the inner periphery of the glass substrate. | 02-12-2009 |
20090104853 | METHOD OF MANUFACTURING DISK SUBSTRATE - A method of manufacturing a disk substrate includes a disk substrate forming step of forming a disk substrate; and an outer chamfering step of chamfering an outer edge of the disk substrate. The outer chamfering step includes chamfering the outer edge by bringing an end surface of a cylindrical-shaped outer chamfering grindstone having a hollow portion on its end into contact with the outer edge such that the hollow portion faces the outer edge while rotating each of the outer chamfering grindstone and the disk substrate. | 04-23-2009 |
20090113935 | PROCESS FOR PRODUCING GLASS BAR - Included are a reducing-heterogeneous-layer removing process of removing at least a part of a reducing heterogeneous layer in a surface of a plate glass manufactured through a float process, and a heating drawing process of heating and softening the plate glass from which at least the part of the reducing heterogeneous layer is removed in a heating furnace to draw the plate glass to a desirable thickness to form a glass strip. Thus provided is a method of manufacturing a glass strip capable of manufacturing a thin, rod-like glass strip with an excellent flatness even when a plate glass to be subjected to the heating drawing is a plate glass manufactured through the float process. | 05-07-2009 |
20100317265 | CHAMFERING APPARATUS FOR CHAMFERING GLASS SUBSTRATES - A chamfering apparatus is used to chamfer a peripheral edge of a glass substrate. The chamfering apparatus includes a grindstone having a cylindrical hollow end portion; a grindstone driving unit that rotates the grindstone around an axis of the cylindrical hollow end portion; a substrate rotation-driving unit that rotates the glass substrate around either one of an axis of the outer periphery and an axis of the center circular hole; and a pressing unit that presses the grindstone to the glass substrate such that an annular end surface of the grindstone contacts with an edge of either one of the outer periphery and the inner periphery of the glass substrate while the cylindrical hollow end portion of the grindstone faces with one of the outer periphery and the inner periphery of the glass substrate. | 12-16-2010 |
20120006063 | METHOD OF MANUFACTURING GLASS SUBSTRATE - A method includes forming a glass ribbon by heating and softening a glass plate preform and drawing the glass plate preform to a predetermined thickness in a heating furnace; and performing coring on the glass ribbon in order to form circular substrates in a straight line along a longitudinal direction of the glass ribbon. | 01-12-2012 |
20130229131 | VOLTAGE MONITORING CIRCUIT - A voltage monitoring circuit includes: a ripple filter configured to output an output voltage from which a ripple component included in an input voltage, which is input from a voltage source, has been removed; a load configured to operate with the output voltage as a supply voltage and output a first signal through the operation; a comparator configured to compare an electric potential of the output voltage with an electric potential of the first signal and output a second signal when the electric potential difference is equal to or less than a predetermined threshold value; and a control circuit configured to reduce the electric potential of the first signal under the condition that the second signal is input thereto. | 09-05-2013 |
20130234772 | CLOCK SUPPLY CIRCUIT - A circuit that supplies a clock signal to a load having a clock input section capable of suppressing power consumption is disclosed. A clock generating section generates a clock signal having an amplitude corresponding to an absolute value of an electric potential difference between a lower limit of a high-level input voltage V | 09-12-2013 |