Brother Kogyo Kabushiki-Kaisha

Hisaki Okada

Shigeki Akiyama

Kiyoshi Takahashi

Isao Mori

A dot-matrix printer for printing characters in a matrix of dots wherein columns of dots each column consisting of a suitable number of dots and extending in a given direction are arranged at a predetermined printing pitch in a printing direction intersecting the direction of the columns of dots. The printer has a print head which is moved in the printing direction and has a first and a second group of dot-forming elements for forming dots such that the dots formed by the second group correspond to the dots formed by the first group and are spaced in the printing direction, by a predetermined distance from the corresponding dots formed by the first group, if the first and second groups of dot-forming elements are activated simultaneously. A first and a second control device are provided for selectively activating the dot-forming elements of the first and second groups, respectively, during movement of the print head, according to dot information representative of characters, such that a character formed by the first group of dot-forming elements and the same character formed by the second group of dot-forming elements have a predetermined positional relation with each other.

Emphasized character dot-matrix printer having two groups of dot-forming

A carriage drive control device to enable printing on a printing sheet from the leading edge thereof. A carriage drive control device repositions a carriage supporting a print head and a paper guide member at the midpoint of a printing line prior to each advance of the printing sheet as long as the leading edge of the printing sheet has been advanced beyond the printing line by a distance less than a predetermined distance.

Carriage drive control device in a printing device

A printing device in which a printing ribbon moves in one direction and a printing head moves back and forth parallel to the ribbon. When the head and ribbon move in the same direction, printing is not started until the ribbon is moving at a faster speed than the head. When the head and ribbon move in opposite directions, printing is not started until the ribbon is moving at a given speed which is a fraction of the speed of the head.

Growing community of inventors

Aichi, Japan

Hisaki Okada