Abstract: The present invention provides a printing apparatus that selects a suitable speed, thereby enabling a rapid printing operation with printing quality maintained. In the printing apparatus, the number of heating elements for every printing line is counted. A printing constant speed is determined based upon the dividing number of a thermal head selected from the counting result. When the printing constant speed is changed, a corresponding numerical table is selected and set from a printing speed accelerating table and a printing speed decelerating table stored in a ROM and set for every printing constant speed.

Abstract: The present invention provides a printing apparatus that selects a suitable speed, thereby enabling a rapid printing operation with printing quality maintained. In the printing apparatus, the number of heating elements for every printing line is counted. A printing constant speed is determined based upon the dividing number of a thermal head selected from the counting result. When the printing constant speed is changed, a corresponding numerical table is selected and set from a printing speed accelerating table and a printing speed decelerating table stored in a ROM and set for every printing constant speed.

Abstract: A tape printing apparatus and the tape printing system capable of preventing deformation of the rollers or sticking thereof to a print head, and capable of preventing degradations in tape feeding accuracy and the inability to print. The tape printing apparatus has a platen roller and a tape feeding roller movable between a pressing position at which they are pressed against a tape accumulated in a cassette and a releasing position in which they are remote from the tape and arranged to perform printing by performing tape feeding upon disposing the platen roller and the tape feeding roller at the pressing position. The apparatus includes a roller driving portion that moves the platen roller and the tape feeding roller between the pressing position and the releasing position and a controller that controls the roller driving portion in correspondence with input signals.