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US 4,433,339 AGranted
Direct-writing recorder
AssigneeHioki Denki Kabushiki Kaisha
InventorTakehiko Sakaguchi
Life of this patent
Estimating the term…
Abstract
A direct-writing recorder of dot type causes an area of a record paper (70) which is to be printed to oscillate in a direction perpendicular to the paper plane for contact with a printing element (22) on a pointer (21) at a given periodic interval. A vibrator unit (50) is disposed at a distance below the printing element (22), and drives the record paper (70), passing between the printing element (22) and the vibrator unit (50), to be urged against the printing element (22).
Claims9
In a direct-writing dot type recorder:
- printing means including a movable printing element for dot printing on a record medium;
- feeding means for intermittently feeding in a stepwise manner a record medium so as to intermittently position successive print areas of the record medium in spaced-apart relationship from the printing element;
- and means synchronized with the intermittent feeding of the record medium for periodically displacing the record medium toward the printing element so as to bring successive print areas of the record medium into contact with the printing element during the successive pause intervals occurring between the intermittent feeding motion of the record medium, said means for periodically displacing the record medium comprising an electromagnetic vibrator unit including a vibratable vibrator plate, a cover member attached to the vibrator plate, means defining a gap between the cover member and the vibrator plate and through which extends the record medium, means defining an opening in the cover member for receiving therethrough the printing end of the printing element, and electromagnetic means responsive to an electrical drive signal for electromagnetically vibrating the vibrator plate to effect displacement of the record medium toward the printing element to bring the record medium into contact with the printing end of the printing element.
In a direct-writing dot type recorder:
- printing means including a movable printing element for dot printing on a record medium;
- feeding means for intermittently feeding in a stepwise manner a record medium so as to intermittently position successive print areas of the record medium in spaced-apart relationship from the printing element;
- and means synchronized with the intermittent feeding of the record medium for periodically displacing the record medium toward the printing element so as to bring successive print areas of the record medium into contact with the printing element during the successive pause intervals occurring between the intermittent feeding motion of the record medium, said means for periodically displacing the record medium comprising an electromagnetic vibrator unit including a vibratable vibrator plate, a cover member disposed in spaced relation from the vibrator plate, means defining a gap between the cover member and the vibrator plate and through which extends the record medium, means defining an opening in the cover member for receiving therethrough the printing end of the printing element, and electromagnetic means responsive to an electrical drive signal for electromagnetically vibrating the vibrator plate to effect displacement of the record medium toward the printing element to bring the record medium into contact with the printing end of the printing element.
Dependencies are inferred from the claim text.