Printing device

Abstract

Abstract PURPOSE:To facilitate the adjustment of printing timings and to make a device small, by a method wherein a plurality of line printing heads are staggered so as to alternate with each other in position and direction in a sub-scanning direction. CONSTITUTION:Line thermal heads 20a-20d are a planar head. The line thermal heads 20a and 20c on the front line are elastically installed so as to be pressed down against platen rollers 10a and 10c by a predetermined pressure with printing parts disposed backwards. The line thermal heads 20b and 20d on the rear line are elastically installed so as to be pressed down against platen rollers 10b and 10d by a predetermined pressure with printing parts disposed frontwards. As a result, the line thermal heads 20a-20d are staggered so as to alternate with each other in position and direction in a sub-scanning direction. In this manner, a shortage in printing can be prevented between the line thermal heads 20a-20d, and the distance between the line thermal heads 20a-20d in the sub-scanning direction can be made smaller to facilitate the adjustment of printing timings of the line thermal heads 20a-20d.

Inventors

• 👤 Mitsuhito Koike
• 👤 Toshiyuki Suzuki

Bibliographic Details