A breaking circuit applied to a motor comprises an actuator, an anti-reverse component and a limiting resistor. The actuator comprises a first electricity transmission terminal, a second electricity transmission terminal and a controlled terminal, with the controlled terminal configured to be connected with a power supply port, and the first electricity transmission terminal configured to be electrically connected with a power input terminal of the motor. The anti-reverse component is electrically connected between the controlled terminal and the first electricity transmission terminal of the actuator. The limiting resistor is electrically and serially connected with the first electricity transmission terminal or the second electricity transmission terminal of the actuator. When power supplied from the power supply port to the power input terminal is stopped, the actuator is conducted to form a discharge path from the power input terminal through the limiting resistor to a low electric potential end.

A device for laterally guiding (1) a metal strip (2) running over a metal strip conveyor device. The device has at least one main part module (3) with a guiding plane (4) and at least one grinding body with a grinding surface (5a, 5b, 5c) for contacting the metal strip (2) to be guided for guiding purposes. The grinding body (6) is attached to a support element (7), or the grinding body (6) includes the support element (7). The support element (7) is mounted in the main part module (3) in a movable manner in the direction of the rotational axis (10) and in a rotatable manner. The position of the grinding body in relation to the guiding plane (4) is modified by moving the support element (7) prior to or while laterally guiding metal strips running over a metal strip conveyor device, prior to contacting a first metal strip for guiding purposes, and/or while contacting a first metal strip for guiding purposes.

A suction roll of a web, or sheet, of paper, includes a tubular body that rotates about a longitudinal rotation axis. External and internal lateral surfaces of the suction roll pneumatically communicate with each other through suction holes. The roll includes a suction chamber pneumatically connected to a vacuum generation device for generating a predetermined vacuum degree. A vacuum distribution device selectively puts into pneumatic communication the suction chamber with at least one row of suction holes, at determined angular positions of the tubular body and causes the processed sheet or web of paper to be sucked, and to adhere at a corresponding portion of the external lateral surface arranged between a catching point and a releasing point having determined angular positions. A displacement device moves the vacuum distribution device to change the angular position of the catching or releasing point of the web or sheet of paper.

The invention concerns line guide devices, for example energy guide chains (31, 51), having a movement sensor. An aspect concerns a movement sensor (10; 20) including a bearing having a first component, for example a guide (11; 21) of a linear bearing, and a second component moveable relative thereto, for example a longitudinally displaceable slider (12; 22), and at least one pick-up (13, 14; 23, 24) whose output signal depends on the relative position of both components. The movement sensor (10; 20) can be arranged with the first component at the connecting location to be supplied and with the second component at the moveable end of the line guide device, or vice-versa. A further aspect concerns an apparatus (30; 40) for winding up and unwinding a line guide device. A rotatable drum (32; 42) for winding up and unwinding the line guide device has a drum drive (38; 48). A sensor unit (35; 45) is arranged at the load-side end region (52B) of the line guide device, for detecting a movement parameter. A control unit (36; 46) connected to the sensor unit (35; 45) controls the drum drive. Both aspects are suitable inter alia for shore power supply.

A transport device includes a first rotary part that rotates; a second rotary part that contacts the first rotary part, that forms a pinch region where an object to be transported is pinched between the second rotary part and the first rotary part, and that rotates together with the first rotary part; and a positioning mechanism that positions the second rotary part with respect to the first rotary part. The positioning mechanism includes a swing part that supports one end portion side of the second rotary part, that is supported at one end portion side of the first rotary part, and that is swingable around a rotation center of the first rotary part; and a fixing section that fixes the swing part.

A pivot mechanism for a printer is provided, the pivot mechanism comprising a pivot base and two oppositely disposed side walls extending perpendicular to the pivot base. An arched slot may be provided in each side wall. Each slot may have at least two notches, each notch defining different positions of the pivot mechanism. Two lever arms may be provided, each of the two lever arms comprising a first end and a second end, with a connecting rod connecting the first ends of the lever arms together. A locking pin may be disposed on the second end of each of the lever arms. Each of the locking pins may extend into a corresponding one of the slots and engage with a corresponding notch. A pivot rod extends through the lever arms and into or through the side walls. The printer housing is adapted to pivot on the pivot rod.

A conveying apparatus includes: a first roller and a second roller configured to convey a print sheet while nipping the print sheet at a nip pressure; an adjustor supporting the first roller and the second roller in a manner capable of adjusting an inter-axial distance between the first roller and the second roller, the adjustor being configured to apply a biasing force biasing the second roller toward the first roller and capable of adjusting the biasing force; and a controller configured to control the nip pressure by driving the adjustor to adjust the biasing force.

A document conveyance device includes a feed roller, a separation roller, a first motor for generating a first drive force for driving the separation roller, a planet gear, a drive gear, a second motor for generating a second drive force, and a position switching mechanism for switching a position of the planet gear from a first position in which the planet gear is separated from the drive gear and does not transmit the first drive force to the separation roller to a second position in which the planet gear engages with the drive gear and transmits the first drive force to the separation roller, based on the second drive force. The position switching mechanism includes a support member for supporting the planet gear, and a transfer mechanism for moving the support member so that the planet gear engages with the drive gear, based on the second drive force. The further movement of the planet gear is prevented after the planet gear engaged with the drive gear.

Methods and apparatus for supporting a paper roll in a paper bucket of a printer are provided. The paper bucket may comprise a curved base portion for accepting paper rolls of varying widths, two oppositely disposed side walls movably mounted to the curved base portion, and a two-part spring-loaded spindle assembly extending through each of the side walls and adapted to support a paper roll therebetween. Each spindle assembly may comprise a first spring loaded spindle part and a second spring loaded spindle part movably connected to one another.

A transport device includes a first rotary part that rotates; a second rotary part that contacts the first rotary part, that forms a pinch region where an object to be transported is pinched between the second rotary part and the first rotary part, and that rotates together with the first rotary part; and a positioning mechanism that positions the second rotary part with respect to the first rotary part. The positioning mechanism includes a swing part that supports one end portion side of the second rotary part, that is supported at one end portion side of the first rotary part, and that is swingable around a rotation center of the first rotary part; and a fixing section that fixes the swing part.