Abstract: The present invention provides a biaxially twisted structure having curved developable surfaces which can be represented by a simple net. The net is in a two-dimensional shape of two congruent rotationally symmetric convex polygons misalignedly connected along a shared edge. A three-dimensional shape of the structure can be reconstructed from the net by sequentially connecting its edges. The structure has a unique design and mechanical feature, which can be utilized as a box, container, part, toy, building and so on.

Abstract: A panel and a system for use in building a lightweight structure are provided. The panel, made of a film or a sheet capable of being curved or bent with fingers, includes a body in a geometric shape circumscribed by straight or curved edges, and at least one joint formation along the edge for panel connection. The joint formation has tabs separated by at least one gap. Each tab expands bilaterally and proximally from the body at its base, and each gap is positioned along the edge so as to accept the base of the tab. The joint formations along the edges of varied curvatures are alignedly, hingedly, and detachably interlocked with each other by twisting the panels with fingers to individually hook the tab at the gap. The panels are assembled into geometric structures having flat or curved faces.

Abstract: A panel and a system for use in building a lightweight structure are provided. The panel, made of a film or a sheet capable of being curved or bent with fingers, includes a body in a geometric shape circumscribed by straight or curved edges, and at least one joint formation along the edge for panel connection. The joint formation has tabs separated by at least one gap. Each tab expands bilaterally and proximally from the body at its base, and each gap is positioned along the edge so as to accept the base of the tab. The joint formations along the edges of varied curvatures are alignedly, hingedly, and detachably interlocked with each other by twisting the panels with fingers to individually hook the tab at the gap. The panels are assembled into geometric structures having flat or curved faces.

Abstract: A tandem continuous paper printer includes: a first printer engine; a second printer engine; and a printer controller; and performing tandem printing by performing printing using the second printer engine on a paper that has been printed on by the first printer engine, the tandem continuous paper printer being arranged so that the first printer engine is made to print tandem check marks on the paper at check page intervals and the second printer engine is provided with a sensor detecting the tandem check marks.

Abstract: As a user selects one of error recovery methods for each error category, and the selected method is stored in a memory. When an error occurs, an error recovery method corresponding to an error category of the error is detected. If the detected method is automatic print continuation, then the error is ignored and print operation is automatically continued. If the detected method is a recovery by user's operation, then an error message is displayed, and a procedure is performed in accordance with an instruction from the user.

Abstract: A printer provided with a printer controller and a printer engine, wherein the printer controller includes a user interface control unit with a function for grouping together parameters associated with the paper, overlay and so on and recording this group of parameters under a desired name.

Abstract: A tandem continuous paper printer includes: a first printer engine; a second printer engine; and a printer controller; and performing tandem printing by performing printing using the second printer engine on a paper that has been printed on by the first printer engine, the tandem continuous paper printer being arranged so that the first printer engine is made to print tandem check marks on the paper at check page intervals and the second printer engine is provided with a sensor detecting the tandem check marks.

Abstract: A printer system includes a plurality of printing mechanisms, a paper inversion mechanism that inverts a paper between the printing mechanisms, a paper buffer that adjusts a time lag in a synchronous operation, and a controller that receives print data from a host computer and synchronously operates the printing mechanisms to perform double-strike or double-sided printing. Preferably, the controller includes a unit that measures a length of a paper path extended between the printing mechanisms and enters a setup value to perform error recovery printing, an image buffer that stores an amount of data equivalent to a distance between an image transfer point and a fixing point, a pointer function that indicates locations of image data and of data in the image buffer, and a function that employs the pointer function to calculate a range and performs error recovery printing, when a malfunction has occurred and a paper is re-loaded.

Abstract: As a user selects one of error recovery methods for each error category, and the selected method is stored in a memory. When an error occurs, an error recovery method corresponding to an error category of the error is detected. If the detected method is automatic print continuation, then the error is ignored and print operation is automatically continued. If the detected method is a recovery by user's operation, then an error message is displayed, and a procedure is performed in accordance with an instruction from the user.

Abstract: In case the seat portion of the inclining chair is inclined periodically, if a supporting shaft to incline the seat portion is arranged away from a position supporting an ischial tuberosity portion of a seated person in an ordinary posture of sitting, an upper body of the seated person makes an up and down movement widely in compliance with a periodical inclining movement of the seat portion, which might cause dizziness due to a vertical shock to the upper body of the seated person.

Abstract: A printer provided with a printer controller and a printer engine, wherein the printer controller includes a user interface control unit with a function for grouping together parameters associated with the paper and recording this group of parameters under a desired name.

Abstract: A printing apparatus includes a print data correcting section for correcting print data and a selecting section for selecting a correction-method to be used in the print data correcting section. The selecting section is formed so that the correction method is selected according to a posttreatment way of a posttreatment apparatus for performing posttreatment on a print result of the printing apparatus.

Abstract: An armrest (1) for providing wrist and forearm support during keyboard and mouse operations is provided. The armrest (1) is placed at the front edge of the keyboard and supports most of the forearm from the elbow to the wrist so that the operator can operate the keyboard and handle the mouse, with the forearm supported close to the keyboard. The armrest (1) includes an enlarged support area (12, 22), an elbow protrusion area (13) at the longitudinal ends of the armrest (1), and two mouse pads (2: 21, 22) on the same surface running from the center area (11, 21) to one of the longitudinal ends. The armrest is positioned so that the center area (11, 21) of the mouse pad (2) faces the space bar (4), and the enlarged support area (12, 22) faces the number keypad (5) and projects out to the right of the number keypad.

Abstract: An armrest (1) for providing wrist and forearm support during keyboard and mouse operations is provided. The armrest (1) is placed at the front edge of the keyboard and supports most of the forearm from the elbow to the wrist so that the operator can operate the keyboard and handle the mouse, with the forearm supported close to the keyboard. The armrest (1) includes an enlarged support area (12, 22), an elbow protrusion area (13) at the longitudinal ends of the armrest (1), and two mouse pads (2: 21, 22) on the same surface running from the center area (11, 21) to one of the longitudinal ends. The armrest is positioned so that the center area (11, 21) of the mouse pad (2) faces the space bar (4), and the enlarged support area (12, 22) faces the number keypad (5) and projects out to the right of the number keypad.

Abstract: An armrest (1) for providing wrist and forearm support during keyboard and mouse operations is provided. The armrest (1) is placed at the front edge of the keyboard and supports most of the forearm from the elbow to the wrist so that the operator can operate the keyboard and handle the mouse, with the forearm supported close to the keyboard. The armrest (1) includes an enlarged support area (12, 22), an elbow protrusion area (13) at the longitudinal ends of the armrest (1), and two mouse pads (2: 21, 22) on the same surface running from the center area (11, 21) to one of the longitudinal ends. The armrest is positioned so that the center area (11, 21) of the mouse pad (2) faces the space bar (4), and the enlarged support area (12, 22) faces the number keypad (5) and projects out to the right of the number keypad.

Abstract: A chair with an automatic seat which cyclically inclines is configured with a forward/backward cyclically inclining mechanism (8) which supports the seat (6) supplied separate from and independent of the backrest (2) so that the seat can be inclined forward and backward and driven mechanically to incline by continuously changing its inclining angle. The inclination direction of the seat can be automatically reversed within a specified angle range. In addition, the chair is equipped with a rightward/leftward cyclically inclining mechanism (13) which is rectangularly installed beneath the forward/backward cyclically mechanism (8) to support it along with seat 6 to allow and drive inclination in the rightward and leftward directions.

Abstract: A a fixing apparatus for an electrophotographic apparatus includes a heat roller (11a) having a heater (14) therein and a pressure roller (11b) urged against the heat roller, wherein a recording material (6) holding a toner image (25) thereon is sandwiched and carried while being heated and pressurized at a pressing portion between the heat roller and the pressure roller thereby to fix the toner image on a surface of the recording material, the fixing apparatus further including a first temperature detecting mechanism (18) formed by a temperature detecting element (15) provided at a portion of an outer periphery of the heat roller and a sensor head (17) disposed so as to be able oppose to the temperature detecting element, a second temperature detecting mechanism (19) formed by a plurality of temperature detecting elements disposed at a constant interval therebetween along an axial direction of the heat roller and spaced from the outer periphery of the heat roller, and a control mechanism (20, 21, 22, 23, 24)

Abstract: This invention relates to an anti-theft device for an engine-driven vehicle having a control unit for controlling either of the supply of fuel to an engine and the ignition timing of this fuel, and a back-up mechanism acting for the control unit when the control unit is damaged. It is determined whether or not the control unit has functioned appropriately when the engine is started up, and if it is determined that it has not, the function of the back-up mechanism is prohibited. Hence, the engine will not start and theft of the vehicle is prevented even if, for example, the control unit is deliberately damaged and an attempt is made to start the engine. However, the back-up mechanism does function if the control unit develops a fault while the vehicle is running, and the vehicle therefore continues to run.

Abstract: A fuel injection amount computing unit for an internal combustion engine is disclosed, wherein when an intake air flow Qho as calculated from a throttle valve opening degree and an engine speed is greater than a predetermined value, and when a variation .DELTA.Tp.sub.REAL of a smoothed basic fuel injection amount Tp.sub.REAL is negative and a final basic fuel injection amount AvTp including phase adjustment and prefetched correction is greater than a trimmed basic fuel injection amount TrTp (=Tp.sub.REAL .times.Ktrm), a surging smoothing index ND is switched from a value (0; smoothing prohibited) corresponding to the transient state to a value (3; smoothing maximized) corresponding to the fully open state.