Abstract: A method and a device (10) for setting up a web (1) of paper having lateral dragging holes (2) in a paper processing and/or printing apparatus. The device (10) is capable of making a reference hole (3) at the midway line (4) between two successive lateral holes (2a,2b). According to the method, when the web (1) is dragged by a paper dragger (7), reference hole (3) passes under a sensor (6) which signals the passage of it to a control unit. The control unit stores such passage and starts the linear measurement of the web from that moment, by an encoder. The control unit operates a perforating apparatus (8) which makes on the web transversal perforations (9) at the chosen distance for one another. Transversal perforations 9 are made coinciding with the midway line of two successive lateral dragging holes.

Abstract: Transversal perforating apparatus of paper for printers fed by a continuous strip of paper (1) without lateral dragging holes. The apparatus (12) comprises a perforator roller (13) holding a blade (16) substantially transversal to and engaging on a pressure roller (14) rotating in synchronism with the perforator roller (13). Means for varying the speed of the perforator roller (13) are provided for as well as means for measuring the position of the blade (16) with respect to the paper which communicate with a central processor. It is possible, therefore, to make transversal perforations coincident with the beginning and the end of each page printed by printing heads (2,3) being able to also vary the interval between two successive perforations during the course of printing.

Abstract: Transversal perforating apparatus of paper for printers fed by a continuous strip of paper (1) without lateral dragging holes. The apparatus (12) includes a perforator roller (13) holding a blade (16) substantially transverse to and engaging a pressure roller (14) rotating in synchronism with the perforator roller (13). The speed of the perforator roller (13) is varied and the position of the blade (16) is measured with respect to the paper. Encoders communicate with a central processor. Transverse perforations are made coincident with the beginning and the end of each page printed by printing heads (2,3). Intervals between two successive perforations can be varied during the course of printing.

Abstract: Improved apparatus for rotary printing of a strip of paper (1) or similar material, comprising a printing roller (2) provided with a cliche (3) brought into contact with a back pressure roller (4) and a screened roller (5) to quickly interrupt and resume the printing of the paper (1), said means comprising a support (20) to which the printing roller (2) is rotatingly connected and which is, in turn, rotatingly connected to a fixed pivot (21) eccentric with respect to the printing roller (2) and around which rotation occurs by means of an actuator (22). Washing means (15) are also provided for the cliche (3) and a mobile support (30) of the ink roller (6) which allows it to be distanced from the screened roller (5) so as to create a space (8) which promotes the formation of a film of ink on the screened roller (5) itself suitable to keep it damp and prevent drying. (FIG.

Abstract: A device for unwinding and discharging paper reels, having endless conveyor belts rotatably mounted on a pair of oppositely disposed rollers for unwinding a paper reel and having a concave portion between the oppositely disposed rollers for receiving the paper reel, the paper reel being supported above the endless conveyor belts for frictional engagement of the reel with the endless conveyor belts for movement of an end of the paper from the reel in a direction of movement of the endless conveyor belts, and a stopping member positioned on the endless conveyor belts between the oppositely disposed rollers downstream of the paper reel, the stopping member being positioned on the endless conveyor belts prior to a substitution of another paper reel for the paper reel already on the endless conveyor belts, and the stopping member comprises a wedge-shaped member having an upper inclined surface substantially in conformity with the outer surface of the paper reel and a lower surface in conformity with an upper surfa

Abstract: Splicing apparatus for a laser printer and to assist in carrying out an operating method for a service apparatus for laser printers having a pair of conveying belts with upper surfaces parallel, co-planar and displaceable in the same direction and having a stationary splicing area provided between the conveyor belts with fixed and movable anchors for the temporary anchoring of two sheets to be spliced, and an adhesive tape supported for unwinding by two V-shaped gorges having an apex flush and aligned with the splicing line, and a motor coupled with a frame for the translation thereof between a first position in which it forms the upper cover for an exit from the service apparatus of the laser printer and a second position in which it is displaced towards one end in a cantilevered manner, so as to uncover and give access to the exit of the service apparatus.

Abstract: A method for zig-zag folding a web of sheet material includes feeding the web with a pair of rollers against an obstacle to form a loop. The loop is engaged by a roller having a higher peripheral speed than the pair and engaged against another obstacle to form a fold line from the first loop and to form a second loop. Another roller having a higher peripheral speed than the pair forms the second loop into a fold line, and the steps are repeated to form a zig-zag folded stack.

Abstract: Teleprinting system, at a telephone user, comprising an apparatus containing a microprocessor corrected to a telephone line through a modem unit providing to distinguish data transmission messages from standard telephone messages using differences in the ring signal to send the received data to a printer, to a display, or through an interface circuit to an outer computer, and receiving messages from an optical reader or from a keyboard for their transmission through the modem unit to the corresponding apparatus of an agency or individual connected in order to embody the interaction, and is particularly applicable to telebilling or teleinvoicing methods from service agencies to an end user.

Abstract: Machine for high speed folding in an accordion-like manner of bands of elastic materials such as paper, thin plastic laminates or metal sheets coming from coils onto which are stored in a rolled up form, comprising an orientable guide (104) launching the band (102) against an obstacle (24, 26) so as to cause a length of the band to be bent into an arc-shaped manner, thus forming a loop (150), towards a first roller (20) having circumferential grooves (40) and areas (136, 138, 140) having high friction coefficient with respect to the material of the band to be folded, the roller (20) being rotated at a speed such that its peripheral speed is greater than the advancing rate of the band (102), whereby the loop (150) formed by the band is drawn by the roller (20) up to impinge against releaves (32) engaged within the circumferential grooves (40), causing the band (102) to be pinched, thus forming a sharp fold and then to start again the arc-shaped folding in the opposite direction until it comes into contact with

Abstract: Splicing apparatus for a laser printer and to assist in carrying out an operating method for a service apparatus for laser printers having a pair of conveying belts with upper surfaces parallel, co-planar and displaceable in the same direction and having a stationary splicing area provided between the conveyor belts with fixed and movable anchors for the temporary anchoring of two sheets to be spliced, and an adhesive tape supported for unwinding by two V-shaped gorges having an apex flush and aligned with the splicing line, and a motor coupled with a frame for the translation thereof between a first position in which it forms the upper cover for an exit from the service apparatus of the laser printer and a second position in which it is displaced towards one end in a cantilevered manner, so as to uncover and give access to the exit of the service apparatus.

Abstract: Automatic service truck with a method for moving sheet packages comprising a base frame (22) surrounded by vertical upright struts (24-30) and housing a plurality of planes or trays (34, 36, 38) for receiving the sheet packages; the truck receives the packages, along first direction (x), moving along a second direction (y) perpendicular with respect to the first direction (x) with the help of wheels (50-54) and subsequently lifting the planes or trays (34, 36, 38) along a third direction (z) perpendicular with respect to both the first directions (x) and the second direction (y) to allow subsequent loading of sheet packages on the planes or trays.