1. A method for generating plural imprints of a selected character on a record carrier medium, which imprints are close together, mutually offset and partially overlapping, in an office machine printer equipped with a typing element, the printer being arranged to produce lines of typed characters, in which method a relative movement takes place along a typing line between the typing element and the record carrier medium, said method comprising, in the order recited: effecting an initial relative movement between the typing element and the record carrier medium in a first direction along the typing line to an initial position, and generating at least one imprint of the selected character; effecting a second relative movement between the typing element and the medium by a given number of elemental steps, which number is equal to at least one, each having a length which is a fraction of the spacing between successive characters on a typed line, in the first direction from the initial position to a second position; and effecting a third relative movement between the typing element and the medium by the same number of elemental steps as said second movement, in a second direction, opposite to the first direction, along the typing line, from the second position to a third position, and generating at least one further imprint of the selected character.
4. A method as defined in claim 1 wherein: the printer includes a carriage mounted in the machine for movement relative to the medium along the typing line; the printing element is a daisy wheel rotatably mounted on the carriage and provided with a plurality of radially spaced elastic arms each bearing a type face of a respective character; the printer further includes a motor connected to rotate the wheel in steps to bring a selected type face into position to effect imprinting of its associated character; said step of effecting an initial relative movement and generating at least one imprint comprises bringing the carriage to the initial position, rotating the wheel in a first angular direction to bring the selected character type face into position to effect imprinting, generating a first imprint of the selected character, rotating the wheel in the first angular direction by a given number of elemental angular steps, which number is equal to at least one, each having a magnitude which is a fraction of the radial distance between adjacent wheel arms, rotating the wheel by the same number of elemental angular steps in a second angular direction, opposite to the first angular direction, and generating a second imprint of the selected character; said step of effecting a second relative movement is carried out by effecting such relative movement between the carriage and the medium; and said step of effecting a third relative movement and generating at least one further imprint comprises effecting such relative movement between the carriage and the medium to the third position, generating a first further imprint of the selected character, rotating the wheel in the second angular direction by a given number of angular steps, each having a magnitude which is a fraction of the radial distance between adjacent wheel arms, rotating the wheel by the same number of elemental angular steps in the first direction, and generating a second further imprint of the selected character.