摘要:
An inkjet printhead comprising a substrate having an ink feed slot formed in the substrate and having a first longitudinal edge and a second longitudinal edge opposite to the first longitudinal edge, the first longitudinal edge extending along a first longitudinal axis (X); a first row of vaporization chambers arranged along the first longitudinal edge and a second row of vaporization chambers arranged along the second longitudinal edge, in which each chamber comprises an ink droplet generating portion and a connection portion, the connection portion including at least one duct in fluid connection with the ink feed slot, wherein the connection portions of the chambers of the first row overlap along the first longitudinal axis (X) with the connection portions of the chambers of the second row.
摘要:
Ink jet print head comprising a substrate with an upper surface and a lower surface; a plurality of actuators with ejection chambers and ink supply passages, an ink distribution slot formed in the substrate between the lower surface and the upper surface; a manifold formed in the substrate of the upper surface around the slot for the feed to the actuators; and a plurality of bubble prevention elements formed in the feed manifold. The plurality of bubble prevention elements is provided only for a marginal set of actuators remote from the distribution slot.
摘要:
The ink jet printer comprises a printhead (22) movable in front of a printing medium (30) and provided with an ink cartridge (25) integral with it; the cartridge is filled with ink from a main, high capacity tank (35), which is connected at intervals to the cartridge (25) by means of a capillary element. During each connection, the capillary element (101) is brought into contact with the sponge (41) inside the cartridge, while a peristaltic pump (134) mounted integral upon the main tank provides a pressure suitable for generating a sufficient flow of ink to refill the cartridge (25) in a short time frame. To perform the refilling, the cartridge is brought at the end of its stroke into a service station (5) mounted on the body of the main tank (35), which is moved against the cartridge by means of a motor-driven linkage, controlled by a refilling management programme, in response to the signals of a cartridge ink level sensor.
摘要:
An inkjet printhead comprising a substrate having an ink feed slot formed in the substrate and having a first longitudinal edge and a second longitudinal edge opposite to said first longitudinal edge, the first longitudinal edge extending along a first longitudinal axis (X); a first row of vaporization chambers arranged along said first longitudinal edge and a second row of vaporization chambers arranged along the second longitudinal edge, in which each chamber (20) comprises an ink droplet generating portion and a connection portion, said connection portion including at least one duct in fluid connection with said ink feed slot, wherein the connection portions of the chambers of the first row overlap along said first longitudinal axis (X) with the connection portions of the chambers of the second row.
摘要:
Ink jet print head comprising a substrate with an upper surface and a lower surface; a plurality of actuators with ejection chambers and ink supply passages, an ink distribution slot formed in the substrate between the lower surface and the upper surface; a manifold formed in the substrate of the upper surface around the slot for the feed to the actuators; and a plurality of bubble prevention elements formed in the feed manifold. The plurality of bubble prevention elements (72) is provided only for a marginal set of actuators remote from the distribution slot.
摘要:
This invention relates to an ink jet system (10) and to a corresponding method of use suitable for rendering the printing characteristics homogeneous upon changes in working conditions, such as the type of printing medium, inks and ambient conditions. The object is attained through optical means (24) suitable for detecting the quantity of light reflected by appropriate patterns and a control unit (21) suitable for processing the data corresponding to the quantity of light reflected in order to identify the real dimensions of the ink droplets (dot size) on the printing medium and for transmitting them to the print management programs or print drivers (67b). The system (10) and method guarantee total independence from the working conditions, with the result that the images printed will be uniform no matter what the conditions.
摘要:
The device comprises a printing head (15) constituted by an insulating container (19) with a capillary nozzle (36). The electrically conductive ink is kept under circulation in the container via a feed tube (26, 23) and a return tube (27, 24) leading to a suction pump, in order to allow the formation of a convex meniscus at the exit aperture of the nozzle (36) and eliminate any vapor bubbles. A pulse generator creates a voltage of a predetermined value and duration between an electrode (37) external to the nozzle and an electrode (23) in contact with the ink, in order to create a state of excitation of the meniscus and partial vaporization of a layer of ink, such as to expel a plurality of ink particles. The head is mounted on a carriage movable transversely to the paper, which advances at each stroke reversal of the head.
摘要:
A thermal ink jet printhead (40) for the emission of drops of ink on a print medium (46) comprises a tank (103) containing ink (142), a lamina (67), a groove (45) and a plurality of ejectors (73), each of which comprises in turn a chamber (74) placed laterally with respect to the groove (45), and fluidly connected thereto by means of a plurality of elementary ducts (75) produced on said lamina (67).
摘要:
The ink jet printer comprises a printhead (22) movable in front of a printing medium (30) and provided with an ink cartridge (25) integral with it; the cartridge is filled with ink from a main, high capacity tank (35), which is connected at intervals to the cartridge (25) by means of a capillary element. During each connection, the capillary element (101) is brought into contact with the sponge (41) inside the cartridge, while a peristaltic pump (134) mounted integral upon the main tank provides a pressure suitable for generating a sufficient flow of ink to refill the cartridge (25) in a short time frame. To perform the refilling, the cartridge is brought at the end of its stroke into a service station (5) mounted on the body of the main tank (35), which is moved against the cartridge by means of a motor-driven linkage, controlled by a refilling management programme, in response to the signals of a cartridge ink level sensor.
摘要:
A thermal ink jet printhead (40) for the emission of drops of ink on a print medium (46) comprises a tank (103) containing ink (142), a lamina (67), a groove (45) and a plurality of ejectors (73), each of which comprises in turn a chamber (74) placed laterally with respect to the groove (45), and fluidly connected thereto by means of a plurality of elementary ducts (75) produced on said lamina (67).