摘要:
The invention relates to a transport apparatus (2) for a printing press (1), particularly for a digital printing press, for transporting a substrate (6) to be imprinted. The transport apparatus (2) comprises a transport roller (4), a pressure roller (5), which can be pressed radially against the transport roller (4) by way of a guidance apparatus (21), and a drive unit (9) for driving the transport roller (4). The transport roller (4) has a ceramic coating (12) on the surface, at least partially on the lateral surface.
摘要:
In accordance with the invention, there are media feeding assemblies and methods of making a roll of a media feeding assembly. The method can include providing a soluble carbon nanotube composition, providing a first elastomeric rubber composition, and mixing the soluble carbon nanotube composition with the first elastomeric rubber composition to form a composite rubber composition, such that the soluble carbon nanotubes are substantially uniformly dispersed in the composite rubber composition. The method can also include applying the composite rubber composition to a mold and curing the composite rubber composition to form a composite rubber tire, such that the substantially uniformly dispersed soluble carbon nanotubes in the composite rubber tire provide at least about 10 % decrease in wear.
摘要:
In a portable small size printer unit 1, when a pickup roller 50 is replaced, user grips a roller main body 55 and slides it resisting a bias force of a spring 57. Consequently, when the roller main body 55 is slid, the entire length of the pickup roller 50 is shortened, so that a first convex portion 55c is removed from a first concave portion 51a. After that, the front end of a slide shaft member 58 is removed from a shaft mounting portion 42a by tilting the roller main body 55 and then, the pickup roller 50 is removed from the printing mechanism unit 7. By sliding the slide shaft member 58 outward of the roller main body 55, the roller main body 55 is taken out of the slide shaft member 58 and the like so as to replace only the roller main body 55.
摘要:
The invention relates to a rotary printing machine including: a continuous print tape (12) of material to be printed, at least one printing unit (6) designed to print on the print tape (12), and a cutting device (10) designed to cut the print tape (12) with the printing unit (6). The machine also includes a traction device (8) located downstream of the printing unit (6) that is located furthest downstream and upstream of the cutting device (10). The traction device (8) is designed to apply a pre-determined mechanical strain on the print tape (12) leaving the most downstream printing unit (6). The print tape (12) comprises a band of coated paper. The invention is suitable for magazine printing presses.
摘要:
The present invention provides an anomalous-noise-suppressed roller having excellent durability and small thickness. The anomalous-noise-suppressed roller is formed of polyurethane foam, wherein the polyurethane foam is produced from a prepolymer derived from a caprolactone diol; a chain-extender formed of a 2-functional diol; and a cross-linking agent formed of a short-chain polyol having three or more functionalities; the cross-linking agent is employed in an amount of 10% by mass or more and less than 20% by mass, with respect to the total amount of the chain-extender and the cross-linking agent; the polyurethane foam exhibits a permanent compressive strain, as determined under 25% compression at 70°C for 22 hours, of 20% or less, and an Asker C hardness of 60 to 70°; and the roller has a thickness of 4 mm or less.
摘要:
The aim of the invention is to improve devices (3) for transporting material webs (1) and for fixing said webs (1) on a counter bearing (4). Said devices (3) have the following characteristics: at least one transport roll (2, 2a, 2b) for transporting the material webs (1) and means for applying an electrostatic charge (q) to at least parts (8) of the material web (1), whereby the electrostatic forces of said charge (q) aid in the fixing of said parts on a counter bearing. The invention is characterised in that at least one transport roll (2, 2a, 2b) comprises means for applying an electrostatic charge (q) to at least parts (8) of the material web (1). The invention also relates to a method for operating a device of this type.
摘要:
A roller (10) having a cylindrical housing (12) with a central bore (14) of variable diameter and a channel (20) between the bore (14) and the housing (12). Air can flow from the bore into the channel. An air-cooled roller designed to provide a uniform temperature gradient across the entire length of the roller, for use inter alia in printing equipment.
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung einer ein Innenrohr und ein das Innenrohr ummantelndes und abschnittweise relativ zu diesem bewegbaren Außenrohr (19) umfassenden Breitstreckwalze mit folgenden Schritten: a) Bereitstellen eines ersten Formkörpers, welcher die Kontur des herzustellenden Innenrohrs aufweist, b) Anbringen eines ersten polymeren Harzmaterials an den ersten Formkörper, zur Bildung des Innenrohrs (8), wobei das Innenrohr (8) zumindest eine Bereich mit maximalem Durchmesser (d max ) umfasst, c) zumindest abschnittweises Bereitstellen eines zweiten Formkörpers (15) auf dem gebildeten Innenrohr (8) außerhalb des zumindest einen Bereichs mit dem maximalen Durchmesser, d) Aufbringen eines zweiten polymeren Harzmaterials auf den zweiten Formkörper und auf dem Innenrohr (8) im Bereich seines maximalen Durchmessers, wodurch das Außenrohr (19) gebildet und das Außenrohr (19) im Bereich des maximalen Durchmessers des Innenrohrs mit dem Innenrohr (8) verbunden wird, e) Entfernen des abschnittweise zwischen dem Innenrohr (8) und dem Außenrohr (19) angeordneten zweiten Formkörpers.