Abstract: A digital printing or copying machine (1) is proposed for the one-sided or double-sided printing onto a substrate (5), using at least one toner. The machine (1) includes at least one fixation device (3) for fixing the toner image on the substrate (5). The fixation device (3) has at least one heating device (13) for melting the toner image, past which the substrate (5) can be taken. The machine (1) is distinguished by a guide device (17) for the free floating movement of the substrate (5) in the effective range of the heating device (13).

Abstract: A digital printing or copying machine (1), and a process which can be carried out with it, for one-sided or double-sided printing of a substrate (5) using at least one toner are proposed. The machine (1) includes at least one fixing device (3) for fixing of a toner image (29) on the substrate (5), having at least one heater (21, 23) for melting the toner image (29), past which the substrate (5) can be guided by a transport device (11) which has one or more transport elements (29, 63 to 71). The machine (1) is characterized in that the heater (21, 23) has at least two melt areas (31, 33, 43 to 47) on the substrate (5) which viewed in the substrate transport direction (15) are arranged in succession and laterally offset to one another.

Abstract: Digital printers or copier machines (1) and processes to be performed using them, for fixing a toner image (5) transferred onto an image-carrier substrate (9), are proposed. One of the processes is characterized in that to fuse the toner particles, at least two electromagnetic radiation pulses are applied in a time-delayed manner onto the same area of the image-carrier substrate (9).

Abstract: A method for fixation of toner on a carrier or printing stock wherein the printing stock with toner is exposed to at least one radiation pulse or radiation flash of electromagnetic radiation and heated for melting of the toner, and a toner having a sharp transition from its solid to liquid state when heated is used. The toner is preferably characterized by the ratio of the value of the elastic modulus G′, at the reference temperature value calculated from the initial temperature at the beginning of the glass transition of the toner plus 50° C., to the value of the elastic modulus G′ at the initial temperature itself, is less than 10−5.

Abstract: A process for printing and/or coating of a substrate, especially of paper or cardboard, is proposed. The process calls for at least one toner layer (1) to be transferred to the substrate and fixed on it, the surface (3) of a gloss variation device (5) acting at least in sections on at least one fixed toner layer (1), or one toner layer (1) in the course of being fixed, in order to influence the gloss of the fixed toner layer (1). In the process, depending on the gloss to be achieved, the force with which the surface (3) of the gloss variation device (5) acts on at least one toner layer (1) and/or at least one property of the surface (3) of the gloss variation device (5) is changed.

Abstract: A digital printing or copying machine (1) is proposed which has at least one fixing device for fixing of a toner which has been transferred to a flexible substrate (11), and the substrate (11) can be guided past the fixing device. The printing or copying machine (1) is characterized by a deformation device (3) for bending the substrate (11), which is located directly in front of the fixing device, and/or within the fixing device.

Abstract: The invention relates to a process for heating at least one second material layer (2), especially a toner layer which has been transferred to an image receiver substrate, in which energy delivery from electromagnetic and/or acoustic waves (5), the electromagnetic and/or acoustic waves (5) is incident from a first material layer (1) at an angle of incidence (&agr;) relative to the normal (7) of the second material layer (2). The angle of incidence (&agr;) is chosen such that the energy delivery which causes at least the heating of the second material layer (2) takes place at least predominantly via the quantum tunnel effect.