1. An electrostatic ink jet head, comprising:
a vibrating plate, and
an electrode installed facing the vibrating plate at a predetermined gap; wherein, an electric pulse is applied between the electrode and the vibrating plate such that the vibrating plate is displaced by electrostatic force, and an ink drop is discharged by mechanical resilience of the vibrating plate pressurizing ink in the ink chamber; wherein, a pixel is formed by the ink that is discharged by one electric pulse; and where a ratio PT of a period during which the vibrating plate and the electrode contact each other to a period required to form a pixel is equal to or less than (2002.79PV) %, where PV is a per cent ratio of displacement volume of the vibrating plate to volume of a vibrating chamber that is a space enclosed by the vibrating plate and a board of the electrode.
2. An electrostatic ink jet head, comprising:
a vibrating plate, and
an electrode installed facing the vibrating plate at a predetermined gap; wherein, an electric pulse is applied between the electrode and the vibrating plate such that the vibrating plate is displaced by electrostatic force, and an ink drop is discharged by mechanical resilience of the vibrating plate pressurizing ink in the ink chamber; wherein, a pixel is formed by the ink that is discharged by a plurality of electric pulses; and where a ratio PT of a period during which the vibrating plate and the electrode contact each other to a period required to form a pixel is equal to or less than (2002.79PV) %, where PV is a per cent ratio of displacement volume of the vibrating plate to volume of a vibrating chamber that is a space enclosed by the vibrating plate and a board of the electrode.
3. An electrostatic ink jet head, comprising:
a nozzle,
an ink chamber that is connected to the nozzle
a vibrating plate that constitutes a common electrode,
an individual electrode installed outside the ink chamber, and facing the vibrating plate at a predetermined gap; and
a plurality of electrostatic actuators that discharge ink drops from the nozzle, the ink being the ink chamber and pressurized by mechanical resilience of the vibrating plate when the vibrating plate is deformed by electrostatic force generated by an electric pulse applied between the vibrating plate and the individual electrode; where a ratio PT of a period during which the vibrating plate and the electrode contact each other to a period required to form a pixel is equal to or less than (2002.79PV) %, where PV is a per cent ratio of displacement volume of the vibrating plate to volume of a vibrating chamber that is a space enclosed by the vibrating plate and a board of the electrode.
4. The electrostatic ink jet head as claimed in claim 3, wherein one electric pulse is applied between the vibrating plate and the individual electrode when forming one pixel.
5. The electrostatic ink jet head as claimed in claim 3, wherein a plurality of electric pulses are applied between the vibrating plate and the individual electrode when forming one pixel.
6. An ink jet recording apparatus, comprising the electrostatic ink jet head as claimed in any one of claims 1 through 5, wherein the electrostatic ink jet head faces recording paper such that recording is performed by ink jet drops.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. Wiper blade (20) comprised of a wiper strip support (22) and a wiper strip (24) that is guided laterally with respect to a wiper arm (10) by a device (28) with a connecting rod (32, 74), whereby one end of the connecting rod (32, 74) can be fixed so that it can pivot on an articulated part (12) of the wiper arm (10) approximately vertically to a windshield (26), and the connecting rod (32, 74) having lateral guide surfaces adjacent a clip that sits on the wiper blade (20), characterized in that a pivot bearing (86, 88) is arranged on both ends of the connecting rod (32, 74), one of which permits longitudinal movement of either the wiper arm (10) or the wiper blade (20), and characterized in that at least one catch pin (42) that is permanently connected to the connecting rod (32, 74) forms the pivot bearing (88) on the side of the wiper blade (20), whereby the catch pin (42) is received in the clip (30, 78) that sits on the wiper blade (20) and is positioned in a catch groove (48) that runs in the longitudinal direction of the wiper blade (20).
2. Wiper blade according to claim 1, characterized in that the clip (30, 78) is embodied as an end cap.
3. Wiper blade according to claim 1, characterized in that an elastic locking hook (50) holds the catch pin (42) in the catch groove (48) that is open towards an articulated bolt (18).
4. Wiper blade according to claim 1, characterized in that the pivot bearing (86) on the side of the wiper arm (10) is formed by a rotational axis (34), which is positioned in rest bore holes or indentations of the articulated part (12) or in an adapter (52, 62) that is connected to it and guided by lateral stopping faces (36).
5. Wiper blade according to claim 4, characterized in that the adapter (62) is made up of two opposing adapter pieces (52), which are fastened to inner surfaces of side cheeks of the articulated part (12) and each feature a key slot (58) that is open towards the windshield (26) and that has a rest bore hole (60) arranged on an end, into which the rotational axis (34) is clipped.
6. Wiper blade according to claim 5, characterized in that the adapter pieces (52) are connected by spring elements (64) and feature pins (66) on their outer sides, which lock into corresponding recesses or indentations of the articulated part.
7. Wiper blade according to claim 1, characterized in that the pivot bearing (86) on the side of the wiper arm (10) is formed by a rotational axis (34) that is permanently connected with the wiper arm (10), on which a hub piece (40) is pivoted, which is permanently connected with the connecting rod (32, 74) and guided by lateral stopping faces (36).
8. Wiper blade according to claim 1, characterized in that guide surfaces (44, 46) on the connecting rod (32, 74) or on the clip (30, 78) are arranged between the pivot bearings (86, 88).
9. Wiper blade according to claim 1, characterized in that two parallel connecting rods (32) are provided, which feature guide surfaces (44) on their facing sides, which guide surfaces are adjacent to lateral guide surfaces (46) of the clip (30).
10. Wiper blade according to claim 1, characterized in that the connecting rod (32) is guided into a guide slot (80) of the clip (78).
11. Wiper blade according to claim 1, characterized in that two connecting rod are provided, wherein the connecting rods (32, 74) are mutually supported at a hub piece (40) or a rotational axis (34) via a connecting piece (38).
12. Wiper blade according to claim 1, characterized in that the connecting rod (32, 74) has an annular cross-sectional profile.
13. Wiper blade according to claim 1, characterized in that the connecting rod (32, 74) features a cross-sectional contour deviating from a circular shape.
14. Wiper blade according to claim 1, characterized in that the catch pin (68) is crowned along its length and runs in a corresponding guide groove (70) of the clip (30).
15. Wiper blade according to claim 14, characterized in that the catch pin (68) is positioned on bearing pins (72) on the connecting rods (32).
16. Wiper blade according to claim 1, characterized in that the connecting rod (74) is supported at a hub piece (40) or a rotational axis (34) via a supporting angle (76).
17. Wiper blade (20) comprised of a wiper strip support (22) and a wiper strip (24) that is guided laterally with respect to a wiper arm (10) by a device (28) with a connecting rod (32, 74), whereby one end of the connecting rod (32, 74) can be fixed so that it can pivot on an articulated part (12) of the wiper arm (10) approximately vertically to a windshield (26), and the connecting rod (32, 74) having lateral guide surfaces adjacent guide surfaces on a clip that sits on the wiper blade (20), characterized in that a pivot bearing (86, 88) is arranged on both ends of the connecting rod (32, 74), one of which permits longitudinal movement of either the wiper arm (10) or the wiper blade (20), and, characterized in that the guide surfaces (44) on the connecting rod (32, 74) or the guide surfaces (46, 80) on the clip (30, 78) feature spring elements, with which they are adjacent to the respective other guide surfaces (44, 46, 80).
18. Wiper blade according to claim 17, characterized in that the pivot bearing (86) on the side of the wiper arm (10) is formed by a rotational axis (34), which is positioned in rest bore holes or indentations of the articulated part (12) or in an adapter (52, 62) that is connected to it and guided by lateral stopping faces (36).
19. Wiper blade according to claim 18, characterized in that the adapter (62) is made up of two opposing adapter pieces (52), which are fastened to inner surfaces of side cheeks of the articulated part (12) and each feature a key slot (58) that is open towards the windshield (26) and that has a rest bore hole (60) arranged on an end, into which the rotational axis (34) is clipped.
20. Wiper blade according to claim 19, characterized in that the adapter pieces (52) are connected by spring elements (64) and feature pins (66) on their outer sides, which lock into corresponding recesses or indentations of the articulated part.
21. Wiper blade according to claim 17, characterized in that the pivot bearing (86) on the side of the wiper arm (10) is formed by a rotational axis (34) that is permanently connected with the wiper arm (10), on which a hub piece (40) is pivoted, which is permanently connected with the connecting rod (32, 74) and guided by lateral stopping faces (36).
22. Wiper blade according to claim 17, characterized in that the guide surfaces (44, 46) on the connecting rod (32, 74) or on the clip (30, 78) are arranged between the pivot bearings (86, 88).
23. Wiper blade according to claim 17, characterized in that the connecting rod (32, 74) has an annular cross-sectional profile.
24. Wiper blade according to claim 17, characterized in that the connecting rod (32, 74) features a cross-sectional contour deviating from a circular shape.