Abstract: A sheet conveying device that more appropriately corrects a positional deviation for a sheet and reduces the time required for a correction of the positional deviation. The sheet conveying device includes a guide unit, for guiding the edges of the sheet that is conveyed and for correcting a positional deviation, and a buffer unit located upstream of the guide unit to form a slack for the sheet, so that one part of the slack formed by the buffer unit is guided by the guide unit. The buffer unit includes an upstream roller pair and a downstream roller pair, and a slack for the sheet is formed between the upstream roller pair and the downstream roller pair.

Abstract: A speed change control system for industrial vehicle, includes: a speed ratio detecting unit that detects a speed ratio of speeds of an input shaft and of an output shaft of a torque converter; speed changer for operating based on the torque converter speed ratio that shifts up or down a speed stage of a transmission in response to the detected speed ratio; a braking detection unit that detects an operation of a braking device for traveling; and a downshift limit unit that permits a downshift to a 1st speed by the speed changer when a non-operation of the braking device is detected by the braking detection unit and limits a lowest speed stage upon downshift by the speed changer to a 2nd speed when an operation of the braking device is detected.

Abstract: An apparatus for and a method of controlling a drag roller in a printing machine to move a web with no shift of a printing position and enhance the printing quality remarkably, even when the drag roller varies in diameter due to its temperature change. From a given temperature-rotational-speed table, a controlling unit obtains a rotational speed of the drag roller so as to adjust a circumferential speed of the drag roller, which speed corresponds to the current circumferential surface temperature checked by a temperature monitor unit. Then, a rotational speed changing unit changes the rotational speed of the drag roller to a value equivalent to the rotational speed obtained by the controlling unit.

Abstract: An apparatus for and a method of controlling a drag roller in a printing machine to move a web with no shift of a printing position and enhance the printing quality remarkably, even when the drag roller varies in diameter due to its temperature change. From a given temperature-rotational-speed table, a controlling unit obtains a rotational speed of the drag roller so as to adjust a circumferential speed of the drag roller, which speed corresponds to the current circumferential surface temperature checked by a temperature monitoring unit. Then, a rotational speed changing unit changes the rotational speed of the drag roller to a value equivalent to the rotational speed obtained by the controlling unit.

Abstract: A turn bar apparatus is incorporated in a rotary press for reversing a web position during running thereof. The turn bar apparatus includes an upstream side turn bar, and a downstream side turn bar disposed along a web running direction. Pull rollers are disposed on an upstream side and a downstream side of the upstream side and downstream side turn bars, respectively. The puller rollers are controlled in such a manner that the peripheral speeds of the pull rollers are faster than a running speed of the web.

Abstract: A tension controller for controlling the tension of running paper web. When a rotary press starts to operate and performs a minimum speed operation, the controller balances the tension of the paper web between a floating roller and a dancer roller, thereby easily bringing the dancer roller to the central position of its swing stroke. Also, the tension controller deactivates a dancer roller positioning mechanism in accordance with an acceleration signal before an impression on signal for starting printing is issued, thereby smoothly initiating tension control from the beginning of printing. Further, the displacement range of the dancer roller is divided into a plurality of regions. Based on values detected by three detection sensors for the dancer roller, namely a displacement direction detection sensor, a displacement speed detection sensor, and a displacement position detection sensor, the tension controller controls the driving time of an infeed roller drive transmission regulation unit.

Abstract: An off-line web finishing system performs plural functions on a pre-printed and rewound web at a series of pieces of equipment arranged in a line. Tension in the web is set at a variable infeed at a substantially constant value that is sufficient to facilitate handling of the web. A common web-transport system drives all draw rolls in the line in unison, at substantially the same speed, and without slippage between the web and the rolls. A second drive system, preferably one using a second drive shaft, rotates the function cylinders of one or more registration sensitive pieces of equipment in unison. A continuously adjustable variable transmission is operatively connected between the secondary line shaft and a main line shaft for the web transport. A control system adjusts the variable transmission. It includes a central microprocessor, an optical scanner associated with each function cylinder, and an encoder to measure the speed of rotation of the function cylinder.

Abstract: An off-line web finishing system performs plural functions on a pre printed and rewound web at a series of pieces of equipment arranged in a line. Tension in the web is set at a variable infeed at a constant value that is sufficient to facilitate handling of the web. A common web-transport system drives all draw rolls in the line in unison, at the same speed, and without slippage between the web and the rolls. In the preferred form, a second drive line rotates in unison the function cylinders of pieces of equipment that are registration sensitive. The second line is driven by a main line shaft of the web transport system via a variable transmission that is adjusted in response to at least one optical scanner that senses misregistrations between the printed pattern on the web and the function cylinders. The registration sensitive function cylinders operate on the web only intermittently.

Abstract: An off-line web finishing system performs plural functions on a pre-printed and rewound web at a series of pieces of equipment arranged in a line. Tension in the web is set at a variable infeed at a constant value that is sufficient to facilitate handling of the web. A common web-transport system drives all draw rolls in the line in unison, at the same speed, and without slippage between the web and the rolls. In the preferred form, a second drive line rotates in unison the function cylinders of pieces of equipment that are registration sensitive. The second line is driven by a main line shaft of the web transport system via a variable transmission that is adjusted in response to at least one optical scanner that senses misregistrations between the printed pattern on the web and the function cylinders. The registration sensitive function cylinders operate on the web only intermittently.

Abstract: A relieved plastic floor tile rolling press having an automatic alignment device comprising a surface roller from which a surface substratum with plane patterns printed thereon is unwound, a pressing roller on which recessed carves shaped the same as the plane patterns are formed to form relieved patterns on the plastic tile, and a sensing device to detect the lateral deviation and also detect the longitudinal location of the surface substratum. The sensing device also comprises a sensor to detect the rotational location of the pressing roller. The information detected by the sensing device is then sent to microprocessors to adjust the lateral location of the surface substratum and eliminate the difference between the longitudinal location of the surface substratum and the rotational location of the pressing roller.

Abstract: A motor drive device for an operation of a camera such as film winding, etc. with a motor is arranged to detect the rotating speed of the motor and to shift, according to the rotating speed thus detected, the reduction ratio of a driving force transmitting gear train of a drive mechanism for transmitting the driving force of the motor to a load, so that the load can be adequately driven.

Abstract: The apparatus comprises a printing cylinder for printing an element such as a paper web and feed and take-up rollers for the web. Sensors are provided for sensing the relative positioning of the web and the print which is applied to the web and the signals from the sensors are fed to a micro-processor. The micro-processor controls the feed and take up rollers so that if the relative positioning of the web is incorrect, the feed and take-up rollers are controlled simultaneously to move the web relative to the printing cylinder substantially without varying any tension in the web between the feed roller and the take-up roller.

Abstract: The apparatus is an improved web processor, which operates at a high web speed, and can achieve variable document lengths with only programmable changes. To achieve this result the web processor uses an improved tool and web drive control. The tool control insures that the tool contacts the web once per document length. The web drive control varies the web speed to mate with the tool during impact and then speed up or slows down the web to maintain a constant speed throughout the processing unit.

Abstract: Apparatus for controlling the infeed speed of a web of material relative to the outfeed speed so that damage to the web will be minimized. The control apparatus senses the length of a loose loop formed by the web and includes a moving belt provided with perforations along its length and which is, in part, positioned between a vacuum chamber and the downwardly depending portion of the web loop. The downwardly descending portion of the web loop is held in contact with the adjacent surface of the perforated belt by a low level vacuum in the vacuum chamber and the position of the loop, with respect to the number of the holes in the belt covered by the downwardly descending portion of the loop, regulates the degree of vacuum in the vacuum chamber. As the loop lengthens, the vacuum increases in a vacuum chamber behind the belt, conversely, when the loop shortens, the vacuum in the chamber decreases. A signal corresponding to the vacuum in the vacuum chamber is communicated to a pressure transducer-amplifier.

Abstract: Apparatus for coordinating the transfer of two continuous cords or strips includes a first roll for delivering a first cord or strip, a second roll for delivering a second cord or strip, a drive for the first roll, a drive capable of operating the second roll at speeds different from that of the first roll, and a tension-detecting control arrangement for detecting changes in the tension of the cord or strip being delivered by the first roll and changing the speed of the second roll in response thereto.