Thermal printer using recording papers different width-sizes
AssigneeFuji Photo Film Co., Ltd.
InventorHidemi Sasaki
Life of this patent
Estimating the term…
Abstract
A thermal head is swingably supported by a shaft. Arm members are swingably attached to the shaft. The arm member presses a head base of the thermal head via a pressure spring. Above the arm members, cam disks are rotatably arranged. The cam disk presses the arm member toward the thermal head. When printing is performed on a color thermosensitive recording paper having a narrow width, the inside cam disks press the arm members to press the thermal head against the recording paper. When printing is performed on another recording paper having a broad width, all the cam disks press the arm members to press the thermal head against the recording paper.
Claims15
A thermal printer for printing an image on a recording paper, said thermal printer comprising:
- a platen for supporting said recording paper;
- a thermal head being movable between a thermal-recording position to be pressed toward said platen, and an evacuation position separated from said platen, said thermal head printing the image on the recording paper interposed between the thermal head and the platen when located at the thermal-recording position;
- and
- a head-pressing mechanism for moving said thermal head between the thermal-recording position and the evacuation position, said head-pressing mechanism changing a pressure force of said thermal head in accordance with a width of the recording paper in the thermal-recording position,
- wherein said thermal head extends in a scanning direction corresponding to a width direction of said recording paper;
- said recording pacer moves in a feed direction perpendicular to the scanning direction while the image is printed;
- and said head-pressing mechanism changes positions in the scanning direction for pressing said thermal head in accordance with the width of said recording paper.
A thermal printer for printing an image on a recording paper, which comprises:
- a platen for supporting said recording paper;
- a thermal head being movable between a thermal-recording position to be pressed toward said platen, and an evacuation position separated from said platen, said thermal head printing the image on the recording paper interposed between the thermal head and the platen when located at the thermal-recording position;
- and
- a head-pressing mechanism for moving said thermal head between the thermal-recording position and the evacuation position, said head-pressing mechanism (i) changing a pressure force of said thermal head in accordance with a width or thickness of the recording paper in the thermal-recording position and (ii) comprising (ii-1) a plurality of arms attached so as to be coaxial with said thermal head;
- (ii-2) a plurality of cam disks for pressing corresponding ones of said arms toward the thermal head;
- and (ii-3) a plurality of first springs disposed between respective ones of the arms and the thermal head.
Dependencies are inferred from the claim text.