Method and arrangement for generating positionally accurate print images on a carrier material

A method for generating positionally accurate print images on a carrier material with the aid of an electrophotographic printer or copier, comprising:

• generating at least a first toner image on a toner image carrier;
• transfer-printing the first toner image from the toner image carrier onto a carrier material, the carrier material being contacted by the toner image carrier during the transfer printing at at least one transfer printing point;
• performing a relative movement, after the transfer printing of the first toner image, between the carrier material and the toner image carrier such that the carrier material is no longer contacted by the toner image carrier;
• generating at least a second toner image on the toner image carrier;
• positioning the carrier material, for the transfer printing of the second toner image, with respect to the position of the second toner image generated on the toner image carrier such that the second toner image is transfer-printed at a predetermined distance to the first toner image;
• and
• correcting, depending on a printer-specifically or copier-specifically determined positioning error occurring during the positioning of the carrier material, at least one of a position of the carrier material and a position of the toner image carrier.

An arrangement for generating positionally accurate print images on a carrier material aided by an electrophotographic printer or copier, comprising:

• a toner image carrier on which at least a first toner image and at least a second toner image can be generated;
• a device configured for performing a relative movement between the toner image carrier and a carrier material;
• a control unit configured for controlling the relative movement such that the toner image carrier contacts the carrier material during transfer printing of each toner image from the toner image carrier onto the carrier material at at least one transfer printing point, and in that the carrier material no longer contacts the toner image carrier after the transfer printing of the first toner image;
• a drive unit configured for conveying the carrier material, which, for transfer printing the second toner image onto the carrier material, positions the carrier material such that the second toner image is transfer-printed onto the carrier material at a preset distance to the first toner image;
• the arrangement being configured to, dependent on a printer-specific or copier-specific positioning error occurring during the positioning of the carrier material, perform a correction of at least one of the position of the carrier material and the position of the toner image carrier.

A method for generating positionally accurate print images on a carrier material aided by an electrophotographic printer or copier, comprising:

• generating at least one toner image on a toner image carrier, at least one portion of the toner image being generated during a first operating state, in which a surface of the toner image carrier does not contact a carrier material to be printed;
• driving the toner image carrier at a first circulation speed during the first operating state;
• driving the carrier material at a transport speed during transfer printing of the toner image from the toner image carrier onto the carrier material, the transport speed being at least slightly slower than the first circulation speed;
• moving the toner image carrier and the carrier material relative to one another such that the surface of the toner image carrier contacts the carrier material to be printed for the transfer printing of the toner image during a second operating state;
• reducing the first circulation speed of the toner image carrier to a second circulation speed after contacting;
• and
• determining and correcting a positioning error caused by the change in circulation speed during the transfer printing of the toner image at a transfer printing point.

An arrangement for generating positionally accurate print images on a carrier material aided by an electrophotographic printer or copier, comprising:

• a toner image carrier on which at least one toner image can be generated, at least a portion of the toner image being generatable in a first operating state, in which the surface of the toner image carrier does not contact a carrier material to be printed;
• a first drive unit configured to drive the toner image carrier at a first circulation speed during the first operating state;
• a second drive unit configured to drive the carrier material at a transport speed during the transfer printing of the toner image from the toner image carrier onto the carrier material, the transport speed being at least slightly slower than the first circulation speed;
• a device configured to perform a relative movement between the toner image carrier and the carrier material such that a surface of the toner image carrier contacts the carrier material to be printed for transfer printing the toner image in a second operating state, and after contacting, the first circulation speed of the toner image carrier being reduced to a second circulation speed, which approximately corresponds to the transport speed of the carrier material, the positioning error caused by the change in circulation speed during the transfer printing of the toner image at the transfer printing point being determinable and at least one of the first and second drive unit being controllable such that the carrier material is arranged with respect to the toner image substantially free of positioning errors during transfer printing.