Abstract: A heater controller is provided. The heater controller includes a switching unit which switches a conduction state of a heater with an AC power source between ON and OFF at a timing at which an AC power voltage becomes zero; and a control unit which controls the switching unit at each unit interval corresponding to a half wave period of the AC power voltage. The control unit outputs a switch signal for switching the conduction state based on a pattern in a control time period set as an integral multiple of the half wave period. In the pattern, ON intervals in which the conduction state is to be ON, and OFF intervals in which the conduction state is to be OFF are arranged so that one of the ON intervals and the OFF intervals, a number of which is smaller are not successive within the control time period.

Abstract: A light scanning device is provided. The light scanning device includes: an oscillating mirror which oscillates rotationally and reflects a light beam to be scanned over a scanning range, the scanning range including a first scanning range and a second scanning range set across a center of the scanning range; a detection unit including a light receiving face, on which the light beam is incident, to detect the light beam; and first and second stationary mirrors which reflect the light beam reflected by the oscillating mirror to the first scanning range and the second scanning range, respectively, to be incident on the light receiving face, wherein an incident pattern of the light beam reflected by the first stationary mirror incident on the light receiving face is different from an incident pattern of the light beam reflected by the second stationary mirror incident on the light receiving face.

Abstract: A printing and embroidering system having a positional data appending system that is adapted to append positional data indicating positions of a first image and a second image with respect to each other to first image data representing the first image to be formed by one of printing and embroidering and second image data representing the second image to be formed by the other one of printing and embroidering, a first image forming unit with a first fabric holding member, which is adapted to form the first image based on the first image data on a fabric being held by the first fabric holding member, and a second image forming unit with a second fabric holding member, which is adapted to form the second image based on the fabric being held by the second fabric holding member, wherein the first image forming unit is provided with a mark forming system, which is adapted to form a predetermined mark represented by the positional data on the fabric, and wherein the second image forming system is provided with a mis

Abstract: A method is provided for producing a roller thrust bearing having a plurality of rows of rollers, the bearing featuring reduced differential slip, reduced friction and wear, and increased longevity without flaking. The method includes forming a cage to accommodate the rollers, crowning the rollers, and arranging the rollers in pockets such that the rollers held by a pocket have respective end surfaces in direct contact with each other.

Abstract: A method for manufacturing a raceway member, in which a hardness of a region to be plastically deformed is controllable in a stable manner and a sufficient rolling contact fatigue life is ensured by making a hardness of a region including a raceway surface sufficiently high, while suppressing increase in the manufacturing cost, includes a steel member preparation step, a heat treatment step, and a finishing step. The heat treatment step includes: a carbonitriding step, in which the steel member is heated to a carbonitriding temperature, which is a temperature not lower than A1 point, and carbonitrided; a temperature holding step, in which the steel member is cooled from the carbonitriding temperature to a temperature range between not lower than a temperature 100° C.

Abstract: A heater controller is provided. The heater controller includes a switching unit which switches a conduction state of a heater with an AC power source between ON and OFF at a timing at which an AC power voltage becomes zero; and a control unit which controls the switching unit at each unit interval corresponding to a half wave period of the AC power voltage. The control unit outputs a switch signal for switching the conduction state based on a pattern in a control time period set as an integral multiple of the half wave period. In the pattern, ON intervals in which the conduction state is to be ON, and OFF intervals in which the conduction state is to be OFF are arranged so that one of the ON intervals and the OFF intervals, a number of which is smaller are not successive within the control time period.

Abstract: A complex data processing device that processes embroidery data representing an embroidery pattern to be formed on fabric by a sewing machine capable of embroidering and print data representing print pattern to be printed on the fabric by a printer. The complex data processing device includes a data acquiring unit that acquires the embroidery data and the print data, an overlapped region detecting unit that detects an overlapped region at which an embroidery region represented by the embroidery data and a printing region represented by the print data overlap based on the embroidery data and the print data acquired by the data acquiring unit, and a data modifying unit that deletes data corresponding to the overlapped region detected by the overlapped region detecting unit from at least one of the embroidery data and the print data.

Abstract: A light scanning device is provided. The light scanning device includes: an oscillating mirror which oscillates rotationally and reflects a light beam to be scanned over a scanning range, the scanning range including a first scanning range and a second scanning range set across a center of the scanning range; a detection unit including a light receiving face, on which the light beam is incident, to detect the light beam; and first and second stationary mirrors which reflect the light beam reflected by the oscillating mirror to the first scanning range and the second scanning range, respectively, to be incident on the light receiving face, wherein an incident pattern of the light beam reflected by the first stationary mirror incident on the light receiving face is different from an incident pattern of the light beam reflected by the second stationary mirror incident on the light receiving face.

Abstract: There is provided a roller thrust bearing providing reduced differential slip, free of significant friction and wear, and providing increased longevity against flaking. The present invention provides a thrust bearing in the form of a roller thrust bearing including at least two radially arranged rows of rollers and a cage holding the rollers, the rollers including at least one roller crowned.

Abstract: A nitrogen enriched layer is formed in a primary heat treatment, and requenching is conducted in a secondary heat treatment, while the heat treatment efficiency is improved across the entire system. In a primary heat treatment device 1, a bearing component is heated in a heater 11 at a temperature exceeding the A1 transformation point, and is then cooled in a cooler 12 to a temperature less than the A1 transformation point, thus forming a nitrogen enriched layer at the surface of the component. The bearing component that has undergone primary heat treatment is then subjected to high frequency heating in a heater 21 of a secondary heat treatment device 2, at a temperature exceeding the A1 transformation point, and is then cooled in a cooler 22 to a temperature less than the A1 transformation point. Following cooling by the cooler 22, the component is tempered using high frequency heating.

Abstract: A complex data processing device that processes embroidery data representing an embroidery pattern to be formed on fabric by a sewing machine capable of embroidering and print data representing print pattern to be printed on the fabric by a printer. The complex data processing device includes a data acquiring unit that acquires the embroidery data and the print data, an overlapped region detecting unit that detects an overlapped region at which an embroidery region represented by the embroidery data and a printing region represented by the print data overlap based on the embroidery data and the print data acquired by the data acquiring unit, and a data modifying unit that deletes data corresponding to the overlapped region detected by the overlapped region detecting unit from at least one of the embroidery data and the print data.

Abstract: A printing and embroidering system having a positional data appending system that is adapted to append positional data indicating positions of a first image and a second image with respect to each other to first image data representing the first image to be formed by one of printing and embroidering and second image data representing the second image to be formed by the other one of printing and embroidering, a first image forming unit with a first fabric holding member, which is adapted to form the first image based on the first image data on a fabric being held by the first fabric holding member, and a second image forming unit with a second fabric holding member, which is adapted to form the second image based on the fabric being held by the second fabric holding member, wherein the first image forming unit is provided with a mark forming system, which is adapted to form a predetermined mark represented by the positional data on the fabric, and wherein the second image forming system is provided with a mis

Abstract: There is provided a roller thrust bearing providing reduced differential slip, free of significant friction and wear, and providing increased longevity against flaking. The present invention provides a thrust bearing in the form of a roller thrust bearing including at least two radially arranged rows of rollers and a cage holding the rollers, the rollers including at least one roller crowned.

Abstract: There is provided a roller thrust bearing providing reduced differential slip, free of significant friction and wear, and providing increased longevity against flaking. The present invention provides a thrust bearing in the form of a roller thrust bearing including at least two radially arranged rows of rollers and a cage holding the rollers, the rollers including at least one roller crowned.

Abstract: There is provided a roller thrust bearing providing reduced differential slip, free of significant friction and wear, and providing increased longevity against flaking. The present invention provides a thrust bearing in the form of a roller thrust bearing including at least two radially arranged rows of rollers and a cage holding the rollers, the rollers including at least one roller crowned.

Abstract: There is provided a roller thrust bearing providing reduced differential slip, free of significant friction and wear, and providing increased longevity against flaking. The present invention provides a thrust bearing in the form of a roller thrust bearing including at least two radially arranged rows of rollers and a cage holding the rollers, the rollers including at least one roller crowned.

Abstract: A roller bearing which can sufficiently ensure an endurance life of rollers even under conditions where debris contamination and temperature rise are large. As the material for an outer ring, inner ring and tapered rollers, a steel in which the Si and-Mn contents are increased is used, and after it has been treated to carbo-nitriding, it is quenched to adjust the amount of retained austenite in the carbo-nitrided layer formed on the surface layer of each part to 20-50 vol %. Thus, it is possible to prevent surface peeling resulting from initiation and propagation of cracks,. thereby greatly improving the endurance life of the rolling bearing under conditions in which debris contamination or temperature rise at bearing portions is large.