Patent Document ID: 4388005
Application ID: 06257479

Base Claim:
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.

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Claim 2:
2. A method as defined in claim 1 for removing erroneously typed characters in an office machine equipped with a correcting device including an erase ribbon, the printer including a carriage carrying the typing element and mounted in the machine for movement relative to the medium along the typing line, the machine including a drive device for effecting such movement of the carriage, a memory for storing a representation of at least one of the characters to have been last printed, an ink ribbon, a control device for producing signals for setting the position of the typing element, and means providing an erase signal for bringing the erase ribbon into position to cooperate with the typing element in place of the ink ribbon and for setting the typing element to effect imprint of the character to be erased, wherein said step of effecting an initial relative movement is carried out by effecting such relative movement between the carriage and the medium and comprises bringing the erasing tape into operative association with the typing element in place of the ink ribbon before generating the first-recited imprint, and further comprising withdrawing the erasing ribbon from operative association with the typing element after said step of generating a further imprint.