Abstract: System and methods for a vehicle for determining driver distraction and adapting the operation of driving assistance systems. One example system includes a subsystem for sensing driver interaction with electrical devices located within a passenger compartment of the vehicle, a first sensor configured to sense conditions outside of the vehicle, a second sensor configured to sense conditions outside of the vehicle, and an electronic controller.

Abstract: An inking system for use in transferring ink to a flexographic printing plate in a flexographic printing system includes an anilox member having an ink transfer zone located between first and second recessed bearing contact zones. A radius of the recessed bearing contact zones is less than a radius of the ink transfer zone by at least 0.100 inches. An ink tray includes a floor and first and second end walls. Bearings are mounted outside of the end walls which engage with the first and second bearing contact zones, respectively, thereby positioning the ink tray assembly in a specified position relative to the anilox member. Upper edges of the end walls extend into the recessed bearing contact zones.

Abstract: A method of achieving precision registration in a roll to roll process by simultaneously depositing multiple inks onto a printing roll. One of these inks prints a pattern of fiducial marks onto a substrate while another ink prints a predetermined pattern on the same substrate such that the predetermined pattern bears a predictable spatial relationship to the pattern of fiducial marks. Consequently, even if the ink forming the predetermined pattern is invisible, or has such low contrast with the substrate that it is effectively invisible, or even has been dissolved away in a subsequent processing step, it is still possible to know where the predetermined pattern is by referring to the pattern of fiducial marks.

Abstract: A variable cutoff printing press includes a plate cylinder, a plate cylinder support removably supporting the plate cylinder, a blanket cylinder, a blanket cylinder support removably supporting the blanket, an impression cylinder and an impression cylinder support. An actuator for moving the blanket cylinder support accommodates different blanket cylinder sizes, the actuator further moving the impression cylinder support so that regardless of blanket cylinder size a gap exists between the blanket cylinder support and the impression cylinder support. An on impression actuator moves the impression cylinder support against the blanket cylinder support to set a desired print load. A method is also provided.

Abstract: A compact printing unit includes a plate cylinder, an impression cylinder, and an ink applicator roller in a printing press, in particular a label printing press. In the printing unit, the plate cylinder is disengageable from cylinders contacting the plate cylinder for the purpose of format variation. The plate cylinder is pivotable about the impression cylinder about a pivot axis which is parallel to the axis of rotation of the impression cylinder and a distance between the axes of rotation of the plate cylinder and the impression cylinder is variable. A printing press and a method of producing labels or self-adhesive labels in a printing press are also provided.

Abstract: A variable cutoff printing press is provided. The printing press includes a first plate cylinder rotating at a constant angular velocity and printing on a web during each revolution about a first plate cylinder axis and a first blanket cylinder rotating at varying angular velocities during each revolution about a first blanket cylinder axis. The first blanket cylinder comes in and out of contact with the first plate cylinder during operation. A method of variable cutoff printing is also provided.

Abstract: A printing unit of a printing machine is configured having at least two frame parts, a spacing between which can be modified. Several form cylinders and several transfer cylinders, which cooperate to print a web, are located on each of the at least two frame parts. The distance between the two frame parts is less when the printing unit is closed than it is when the printing unit is open. The printing unit includes at least two web guiding elements. A first tangent is established by a transfer cylinder of a stationary one of the frame parts. A second tangent is established by the at least two web guiding elements. The first tangent and the second tangent are spaced from each other at a distance.

Abstract: A flexographic printing machine including at least one printing unit with an ink roller mounted at one end to a first sliding support and a plate-holding roller mounted at one end to a second sliding support, and at least one guide member for guiding the movements of the supports in directions parallel to an imaginary line which perpendicularly intersects the axes of the ink and plate-holding rollers. In addition, first upper and lower screws are provided parallel to said line above and below the axes of the ink and plate-holding rollers in order to move the first support, and second upper and lower screws are provided parallel to the line above and below the axes of the ink and plate-holding rollers in order to move the second support.

Abstract: A web-fed rotary printing press is structured having two end-surface defining side frames. At least one printing unit, with at least two cooperating printing unit cylinders, is supported between these side frames. At least one of the at least two cooperating cylinders is pre-assembled as a cylinder unit that has side frames and face engaging bearing unit. The at least one printing unit can be placed between the side frames as the one-piece cylinder unit comprising the structural cylinder.

Abstract: A distributor unit includes a reservoir (7) containing a liquid substance, an anilox cylinder (8) and a cliché cylinder (9) onto which is movably fitted a cliche jacket (18), the reservoir (7), the anilox cylinder (8) and the cliche cylinder (9) being movable from and to a cylinder (2) on which travels a web-shaped material (3) which has to receive the substance. The distributor unit has an operator side and a transmission side, the anilox cylinder (8) and the cliche cylinder (9) being held by corresponding supports on operator side (14, 15) and on transmission side (16, 17). A device (19) for locking the cliche cylinder in cantilever position when the corresponding cliche jacket (18) has to be substituted is associated to the support on transmission side (17) of the cliche cylinder (9). The support on operator side (15); of the cliche cylinder (9) includes a first and a second element (150, 151) automatically movable from and to the cliche cylinder (9).

Abstract: A web-fed rotary printing press, which is used for printing a web has at least four printing points or locations that are allocated to the web in an imprinting mode of the press. At least one of each two printing points or locations can be alternatively engaged with the web. These two printing points apply the same ink to the same side of the web. These two printing points or locations are situated in two different printing units. In each of the operating modes of the press, at least one of the printing points or locations in each of the units is in a print-on position.

Abstract: A spindle-nut combination for applying a roller to a counterbearing moved essentially at the circumferential speed of the roller. In order to be able to adjust the play of the spindle in a simple manner, an additional nut is associated with, and displaceable against the spindle nut. Both nuts mesh with the thread of the spindle. An additional securable nut is also provided to brace against the additional nut and prevent undesired turning thereof.

Abstract: A process for correcting the longitudinal registration error of a rotary printing press with several inking systems in which a control unit adjusts the desired application line of the printing plate on the material web lying on one of the two rollers. In making the adjustment, the control unit takes into account the shift of the effective print line that arises as a consequence of an adjustment movement of one of the two rollers along an axis that does not run coincident with the connecting line of the axes of rotation of the two rollers, and determines correction values from the relative positions of the two rollers and the inking system, and the angle between the connecting line of the axes of rotation and the axis of adjustment.

Abstract: A web-fed rotary printing press is used for printing a web and consists of at least two satellite cylinders and of at least six cylinders, each of which defines a printing location in cooperation with the satellite cylinders. Each printing location can be brought into a printing-on or a printing-off position. The six or more printing locations can be positioned to all print the same side of the web. At least five of the printing locations, that can be positioned on the same side of the web, are arranged in direct succession along the path of travel of the web.

Abstract: A rotary press to lay patterns of a material on a strip material comprises a working cylinder bearing embossing plates of the patterns of the aforesaid material to be laid and an opposed anvil cylinder. The working cylinder is rotated. A heater for the working cylinder. A device to exert a defined prestress between the working cylinder and the anvil cylinder. Ball-bearings between the anvil cylinder and its shaft. A device adjusts the space between the working cylinder and the anvil cylinder, independent of the device to exert the defined prestress.

Abstract: An apparatus for integrally and conveniently adjusting printing pressures of blanket cylinders in a satellite-type printing press is provided. Printing pressure is adjusted all together by rotating eccentric bearing means (26) of a plurality of blanket cylinders (18) by wheel (34) which is fixed to primary axis (28), penetrating through the center of common pressure cylinder (10).

Abstract: A flexographic rotary platen printing press for printing indicia on a web of flexible material moving along a longitudinal axis. The flexographic rotary platen printing press includes a print drum assembly that is affixed to a trolley that is moveable in a linear direction across the web generally transverse to the direction of the web movement. When the web is stopped, the print drum is caused to roll across the web that is sandwiched between the print drum and a flat, planar platen to print indicia onto the web in a line contact. A linear drive system causes the movement of the print drum assembly. The speed of the transverse movement is electronically coordinated to the speed of the rotation of the print drum as it moves across the web to carry out the printing operation.

Abstract: The invention relates to a method for engaging and disengaging cylinders, in particular cylinders (03; 07) that are disposed in a line. According to the invention, in addition to the displacement required for engaging and disengaging the cylinders, steps are taken to at least reduce the relative tangential speed between the working outer surfaces of the cylinders that are to be engaged against one another or against an intermediate web (08). This is achieved by the release of, or impression upon a specific rotation.

Abstract: An adjusting device for adjusting a sheet transport cylinder in a sheet-fed rotary printing machine, depending upon various printing-material thicknesses, includes a mounting support for mounting the sheet transport cylinder so that a rotational axis of the sheet transport cylinder is adjustable from a first axial position, which corresponds to a given printing-material thickness, to a second axial position, which corresponds to another printing-material thickness and is axially parallel to the first axial position.

Abstract: At printing time, a blanket cylinder gear is meshed with a plate cylinder gear, whereby a first plate cylinder is rotatable by a drive motor. At image-recording time, the blanket cylinder gear is separated from the plate cylinder gear. In this state, a different motor drives the plate cylinder gear to rotate the first plate cylinder at low speed.

Abstract: A method of printing utilizing a plurality of printers, each capable of printing an image on a same side of a web, the method comprising: printing, by a first printer, of first images, separated by spaces, along a first side of a web; and printing, by a second printer, of second images at spaced positions within the spaces between the first images on the first side.

Abstract: A method of providing printing and embossing data includes transmitting print image data defining an image to be printed and emboss image data defining an image to be embossed, where the data is transmitted over a single data path to a common recipient processor.

Abstract: In order to provide a rotary printing machine for direct printing, in which the printing-assembly cylinders are arranged in a space-saving way, there is arranged in side walls at least one double printing assembly containing two form cylinders which are located one above the other, each having its own drive motor and between which at least one impression cylinder is arranged, a web being printable between a form cylinder and an impression cylinder. Each form cylinder and the impression cylinder cooperating with the latter are mounted, adjustably in terms of their mutual spacing, in side walls of the printing unit. For this purpose, the adjustable cylinders are mounted on both sides in slides which are moveable on guide elements fastened to the side walls.

Abstract: An adjustable bearing arrangement is used for the remote controlled adjustment of an inking roller or a dampening roller with respect to a second, contacting roller. The journal of the roller to be adjusted is secured to an adjusting element. A pre-settable adjusting force is transferred from one roller to the other. In the adjustment position, the receiving element or elements are locked so that it is temporarily impossible for the now adjusted roller to move either in, or opposite to the direction of adjustment.

Abstract: A rotary printing machine includes a first gearwheel, a second gearwheel, and a setting device for selectively adjusting the second gearwheel into a first position, in which the gearwheels are coupled to one another, and into a second position, in which the gearwheels are uncoupled from one another. The printing machine includes a traction mechanism for securing a staggered-teeth rotary-angle position of the second gearwheel relative to the first gearwheel when the second gearwheel is adjusted into the second position, and a first tension element for tensioning a rotatably arranged traction means of the traction mechanism. The first tension element is loaded by a spring. The traction means is assigned a second tension element, and in the second tension element is mounted so to be a selectively adjustable into a first switching position and a second switching position.

Abstract: A method and apparatus for more simply and efficiently coupling and decoupling a cylinder in a printing machine. The coupling and decoupling apparatus includes a bearing bushing (11) in a fixed bushing (28). The bearing bushing (11) carries an axial force loaded spindle (10) that is axially displaceable within the bushing (11) between a coupling position in a centering portion (9) of the cylinder and a decoupling position in which a braking system (24, 25) is engaged.

Abstract: A device for quickly and reliably establishing a production-run state in a printing group of a rotary printing machine after the printing cycle has been interrupted. A plurality of freely programmable memory devices having various different printing control programs stored therein may be manually or automatically connected to a control computer that determines which of the preprogrammed control programs are necessary to return the printing machine to a production-run state. The computer then controls the inking unit and, as applicable, the dampening unit in such way that its inking profile for production-run printing is quickly established.

Abstract: The present invention relates to an imprinter unit, and is for the purpose of facilitating the plate replacement to reduce the work load. In an imprinter apparatus capable of replacing a portion of or all of a common pattern to be printed in a printer with a different pattern, there is provided a plate cylinder on which a press plate is mounted and a blanket cylinder to which a pattern on the press plate is transferred. The press plate is a gapless press plate having no joint.

Abstract: In order to provide a rotary printing machine for direct printing, in which the printing-assembly cylinders are arranged in a space-saving way, there is arranged in side walls at least one double printing assembly containing two form cylinders which are located one above the other, each having its own drive motor and between which at least one impression cylinder is arranged, a web being printable between a form cylinder and an impression cylinder. Each form cylinder and the impression cylinder cooperating with the latter are mounted, adjustably in terms of their mutual spacing, in side walls of the printing unit. For this purpose, the adjustable cylinders are mounted on both sides in slides which are moveable on guide elements fastened to the side walls.

Abstract: To provide a synchronous control apparatus in a rotary press having a plurality of multicolor printing units to print the synchronous control apparatus including a printing image allocation setting section for allocating printing images which printing couples are to print, a drive unit for driving the printing couples, an inking transmission unit, a first moving unit for moving blanket cylinders of two sets of printing couples, a second moving unit for making it possible to supply ink, slave control sections for controlling rotation of the drive unit, a transmission unit related to the printing couples and inking devices, operation control sections for controlling operations of the first moving unit and second moving unit according to output signals of the slave control sections, and a master control section connected to the printing image allocation setting section and each of the slave control sections via a network.

Abstract: A nine-cylinder satellite printing unit includes printing stations having a first, second, third and fourth transfer cylinder which a web passes through. The transfer cylinders are capable of being stopped when the printing assembly is switched off. A distance between each of the first and second transfer cylinders, the second and third transfer cylinders, and the third and fourth transfer cylinder is shorter than the distance between the first and fourth transfer cylinder. A guide roller keeps a supplied portion of the web away from the first transfer cylinder and another guide roller keeps a discharged portion web away from the fourth transfer cylinder when the first and fourth printing cylinders are respectively in print thrown-off positions.

Abstract: A web-fed offset printing press has printing units each comprising a plate cylinder, a blanket cylinder, and an impression cylinder, the impression cylinder being movable into and out of rolling engagement with the blanket cylinder via the web. A first printing unit prints a first image portion on the web at prescribed spacings, by moving the impression cylinder away from the blanket cylinder each time one first image portion is printed. A second printing unit prints a second image portion on the spacings left on the web by the first printing unit, also by moving the impression cylinder away from the blanket cylinder each time one second image portion is printed. A variable speed motor rotates each blanket cylinder, while each time the associated impression cylinder is held away to create a space on the web for causing printing of the first or the second printing portion at required spacings.

Abstract: A central impression printing press (20) utilizes a plurality of quick change print stations (100, 200, 300) to increase safety and print quality. The print stations (100, 200, 300) include movable carriages (102, 202, 302) which mount anilox rolls (40) and meter rolls (38). The carriages (102, 202, 302) roll on guide track assemblies (104, 204, 304) and are locked in operative positions by lock mechanisms (106, 206, 306) utilizing lock arms (1100, 316) with progressive engagement surfaces (1106, 318). The carriages (102, 202, 203) have anilox roll mounts (132) and mounting slots (134) which allow the anilox rolls (40) and meter rolls (38), respectively, to be simply lifted off the carriages (102, 202, 203). The anilox rolls (40) are driven by engagement of a shear pin (160) which shears off if foreign matter becomes caught in the rolls. The press (20) also uses an upstream doctor blade (1126) used on the upstream print station (102).

Abstract: A cylinder throwing-off/throwing-on controller for a multicolor lithographic rotary press in which paper splicing is performed.

Abstract: A printing unit in a lithographic web fed rotary printing press has a plate cylinder and an associated blanket cylinder mechanically coupled via a gear train. A first drive motor drives both the plate cylinder and blanket cylinder. An impression cylinder is associated with the blanket cylinder, the impression cylinder being in rolling contact with the blanket cylinder and being driven by a second drive motor. The web passes through a nip formed between the impression cylinder and the blanket cylinder for printing. A clutch is provided for interrupting a drive connection between the first drive motor and the blanket cylinder, as is a throw-off mechanism for separating the plate cylinder from the blanket cylinder. With the printing unit, the blanket cylinder can remain in rolling contact with the impression cylinder and be friction-driven by the web after the drive connection has been interrupted.

Abstract: A web of paper is printed with selective non-variable information and vastly different variable information on portions of the paper web which are ultimately separated into discrete documents. At least one ion deposition print unit and a number of flexographic print units are utilized, as well as a data source containing at least the variable information, and first and second computers. Data is read from the data source with the first computer and in response to the read data the ion deposition print unit is controlled with the first computer to print variable information on the paper web. Form lag commands are provided from the first computer to the second computer. In response to the lag commands the flexographic print units are independently controlled by the second computer to operatively engage and disengage the paper web and thereby print non-variable information from at least one of the flexographic units on each discrete document portion of the paper web.

Abstract: A flexographic rotary printing machine has a supporting structure provided with two lateral shoulders, an impression roller over which a material in sheet form to be printed passes, at least one printing element or assembly arranged adjacent to the impression roller and having an inking unit, a printing plate cylinder and an anilox roller, which are sleeve cylinders, and a drive for transmitting motion between the impression roller and each printing assembly. At each shoulder there is at least one lateral support device for the advancement-retraction of the sleeve cylinders, adapted to move them between a retracted or resting position, in which a respective sleeve can be inserted or removed, and an advanced or active position, in which the cylinders are kept in contact with, and operatively connected to, the impression roller.

Abstract: A device for engaging and disengaging or throwing-off printing unit cylinders in a printing entity of a rotary printing press for printing a web of material, the printing entity including a lower and an upper printing unit, and one of the printing unit cylinders having a stationary mounting support in one of the printing units of the rotary printing press, includes a first adjusting unit for adjusting printing unit cylinders of the printing entity which are formed as printing form cylinders, and a second and eccentric adjusting unit for adjusting one of two of the printing unit cylinders of the printing entity which are formed as transfer cylinders, so that the printing unit cylinders of each of the lower and the upper printing units, respectively, are in mutual engagement, while the transfer cylinders of the respective lower and upper printing units are disengaged from one another.

Abstract: A rotary printing press with rubber-rubber printing units arranged essentially vertically above one another. The rubber cylinders of at least one rubber-rubber printing unit can be retracted from one another in the formation of a usable gap between the two rubber cylinders.

Abstract: A printing system for a multi-color web-fed rotary printing press utilizes a plurality of printing system units that are arranged in a vertical array. Each printing system unit includes a left printing portion, a right printing portion, and a central printing portion. The left and the right portions are supported in left and right shiftable frames which are shiftable horizontally with the respect to a center frame that supports the center portions of the printing system units.

Abstract: A device for the coupling and uncoupling of a printing unit, said printing unit, with its plate cylinder, being engaged with a blanket cylinder in a first position and being disengaged from said blanket cylinder in a second position. Further, the device can be configured so as to additionally serve for a printing press, having at least two printing units assigned to one blanket cylinder, to be variably operated with optimal results. This is achieved in that the printing unit can be brought into a third position, wherein it is disconnected from the drive. Also contemplated herein is a method for coupling printing stands to one another in a printing press.

Abstract: An automated printing press (10) is provided with a plurality of printing stations (13), each having a printing mechanism (60) which prints at least one component image at spaced apart locations along a web (11). Each printing mechanism (60) is positionable to one side of the press for servicing. The print roller (61) is driven through a swingable gear assembly (268) that maintains gear spacing as the print roller to impression roller spacing varies and that engages and disengages tangentially to improve meshing. Microprocessor based computer controllers (400, 405) at each station (13) precisely and repeatably control positions of the printing mechanism (60) and precisely register the component images being printed at the stations (13).

Abstract: In an apparatus for the displacement of bearing blocks mounted on carriages which support shafts, a first carriage is carried for displacement in a carriage guideway fixed to the frame, and the other carriage is carried in a carriage guideway of the first carriage, these two carriage guideways being mutually parallel. To allow the carriages to be displaced with sufficient accuracy without expensive control devices, two spindle screw nuts designed as toothed belt pulleys are mounted in the first carriage parallel to each other and freely rotatable, and the screw spindles screwed into them are mounted selectively for free rotation and for being fixed, on the one hand in the machine frame and, on the other hand, in the second carriage. In the first carriage there is mounted a further drive belt pulley that is drivable by a motor and securable by a securing device, this further drive belt pulley driving an endless toothed belt that drives said spindle screw nuts designed as toothed belt pulleys.

Abstract: A printing press including at least one impression cylinder, at least one plate cylinder, a pair of swivel arms corresponding to each plate cylinder and pivotal about a central axis of the plate cylinder, and a transfer cylinder corresponding to each plate cylinder and supported by the pair of swivel arms is disclosed. The swivel arms can be pivoted, so that each transfer cylinder can be moved between a printing position where the transfer cylinder is engaged with the running web and a non-printing position where the transfer cylinder is disengaged from the running web. The transfer cylinders of the present invention also can be commonly adjusted to vary the pressure against a running web.

Abstract: A printing press (32) with a pair of plate cylinders (12A, 12B) each having a cylindrical body (22A, 22B) and a central axis of rotation (20A, 20B) mounted in fixed parallel spaced relationship, a pair of blanket cylinders (14A, 14B) located adjacent the plate cylinders (12A, 12B) with each having a cylindrical body (30A, 30B) and a rotary axis (24A, 24B) parallel to the axes (20A, 20B) of the plate cylinders (12A, 12B), having a blanket cylinder throw off apparatus (26) mounting the blanket cylinders (14A, 14B) in an operative position in engagement with the pair of plate cylinders (12A, 12B), respectively, and with their rotary axes (24A, 24B) in lateral alignment with the axes of rotation (20A, 20B) of the plate cylinders to reduce vibration and a throw off position in which a throw off gap (39) exists between the pair of blanket cylinders (14A, 14B) and a pair of gaps (403, 43B) exist between the pair of plate cylinders (12A, 12B), respectively.

Abstract: When a screw 60 has been adjusted, a printing pressure adjusting disc 72 is turned through a shaft 75 and a segment gear 73 to adjust an eccentric pin through a link 78 and a lever 79. Also when the amount of eccentricity of a rubber cylinder 53 has been changed as a result of the adjustment of the stopper screw 60, the eccentric pin of each plate cylinder also is simultaneously adjusted in accordance with the amount of adjustment of the screw 60, and further the amount of eccentricity of the plate cylinder is changed to such a state that a printing pressure is kept constant in relation to the rubber cylinder 53, thus enabling the printing pressure adjustment with little labor and time to thereby improve printing operation performance.

Abstract: Apparatus for printing images on certain randomly selected ones of the pre-printed pages comprising a web. The pages are attached to one another end to end to form the web. The apparatus imprints in specific defined areas on the pre-printed pages fixed data in a color other than the color of the pre-printed information on the pages.

Abstract: In a rotary printing machine, there is provided a device for bringing a lacquering/inking cylinder into and out of engagement with at least one of a pair of cylinders including an impression cylinder, the lacquering/inking cylinder being mounted on a shaft, which includes a substantially circular ring turnably disposed on the shaft of the lacquering/inking cylinder, the ring being spring-biased towards two bracing stops and being formed with an indentation at a section of the circumference thereof, the ring being turnable on the shaft so as to move the indented section of the circumference thereof into a position opposite one of the bracing stops for bringing the lacquering/inking cylinder out of engagement with the impression cylinder, the ring being spring-biased in a direction towards the other of the pair of cylinders, the other of the bracing stops being disposed in an open angle formed by an intersection of a line connecting respective axes of the lacquering/inking cylinder and the impression cylinder a

Abstract: The web-fed printing machine preferably intended for the printing of banknotes has two closely adjacent impression cylinders (2, 3), each of which interacts with several blanket cylinders (4, 6). Each blanket cylinder (4, 6) is inked by a plate cylinder (5, 7) which receives its ink from its own inking unit (9, 9'; 11, 11'). The paper web (P) runs between the respective impression cylinder (2, 3) and blanket cylinders (4, 6), partially looping first round one impression cylinder (2) and then in the opposite direction round the other impression cylinder (3), so that the two sides of the paper are successively printed directly with the individual colors. All the blanket and plate cylinders interacting with an impression cylinder (2, 3) are arranged on a respective common exchangeable machine stand (15, 16).

Abstract: This invention relates to an apparatus for displacing shaft-mounting bearing stands, which are secured to carriages, in carriage guides, preferably for displacing the bearing stands of plate cylinders and inking rollers of a printing unit in carriage tracks of the inking unit supports of a multicolor rotary press, comprising screw drives, which are driven by electric motors. To solve the object to provide such an apparatus in which shafts and particularly plate cylinders and associated inking rollers can mutually independently be displaced relative to each other and, e.g., relative to an impression cylinder, the invention resides in that a screw that extends parallel to a single carriage track is rotatably mounted in the machine frame or on the inking unit support and is provided with a drive. A nut which is non-rotatably and axially immovably connected to a bearing stand or to a carriage is mounted on the screw.