Seam quality is improved by introducing the separately-driven right and left active tension mechanisms. The needle thread tension is automatically corrected according the sewing speed. Consistently seam quality is, therefore, achieved regardless of changes in sewing speed. The needle thread tension is automatically corrected according to the remaining amount of bobbin thread. Seam quality is, therefore, stabilized even when the remaining amount of bobbin thread has reduced.
Changeover from the normal stitching to the corner stitching is carried out semi-automatically using the lever while ensuring ease of operation. The operator only needs to input data on the needle gauge/stitching angle through the operation panel. Then, the operator can start the corner stitching only by operating the lever during sewing. Thereafter, the sewing machine automatically changes the sewing mode between the normal stitching and the corner stitching. This means that even the inexperienced operator can produce consistent seam quality while improving productivity.
Seam quality is improved by introducing the separately-driven right and left active tension mechanisms.
The needle thread tension is automatically corrected according the sewing speed. Consistently seam quality is, therefore, achieved regardless of changes in sewing speed.
The needle thread tension is automatically corrected according to the remaining amount of bobbin thread. Seam quality is, therefore, stabilized even when the remaining amount of bobbin thread has reduced.
In the case of using the automatic needle thread tension correction feature according to the remaining amount of bobbin thread, the bobbin-thread change notification signal is provided to warn the operator when the remaining amount of bobbin thread has reduced to the predetermined level.
Thanks to the adoption of the digital presser foot, the presser foot pressure can now be corrected according to the sewing speed.
- The large hook that has a 1.8-fold capacity, in comparison with the standard hook, is adopted. Frequency of bobbin thread changing decreases by half. *The world’s first sewing machine, for sewing foundation, provided with this hook.
- The horizontal-feed is controlled by motor. The stitch pitch can be set on the operation panel.
In addition to the conventional function of the LED light, the color shade can be changed over as “white⇔neutral color (initial value) ⇔incandescent” so as to help reduce the operator’s eye fatigue.
The use of a 1/2 opener system reduces noise and vibration, reducing stress and fatigue to the operator.
