摘要:
An ink system for use in an inkjet printing apparatus includes an inkjet printhead, a supply subtank for containing a supply of an ink to the inkjet printhead, and a return subtank for containing a surplus of the ink not used by the inkjet printhead. A first fluid path couples the supply subtank with the inkjet printhead and with the return subtank, and provides a flow of ink from the supply subtank to the inkjet printhead and to the return subtank. A second fluid path couples the return subtank with the supply subtank and feeds the ink from the return subtank back to the supply subtank. The ink system is characterised by having the supply subtank, the return subtank and the first fluid path supported on a carriage for reciprocating together with the inkjet printhead across the printing medium.
摘要:
An ink tank and a print head are mounted on a carriage for supplying ink to an inkjet print. The ink tank includes: one or more ink chambers, where each of the ink chambers includes one or more functional elements (1) symmetrically arranged, mounted and centered about a center plane of the respective ink chamber, and (2) positioned perpendicular to a direction of movement of the carriage. The functional elements include, for example, a feed outlet for feeding ink to the print head, a supply inlet for supplying ink to the ink chamber, an ink movement damper, an ink level sensor, a vacuum inlet to extract air from the ink chamber, and a re-flow inlet to allow re-flow of air bubbles from the print head to the ink chamber.
摘要:
An ink jet printer including an ink-supply system having: a lower ink container, an upper ink container, a liquid droplet deposition apparatus with nozzles, wherein an ink circulator is provided for circulating ink from the lower container to the upper container and from the upper container through the liquid droplet deposition apparatus (a printhead) back into the lower container and wherein the upper container, having a bottom and side walls and containing ink forming an ink surface, has a first compartment with an inlet for ink wherein the inlet contains a flow guiding device for avoiding directional flow of the ink towards the ink surface and a second compartment, separated from the first one by a partition placed between the first and second compartments so that the two compartments communicate only in a lower part of the upper container.
摘要:
An ink circulation system for use in an inkjet printing apparatus includes an inkjet printhead, an ink supply path for supplying an ink to the inkjet printhead and an ink return path for returning ink not used for printing from the inkjet printhead. The ink return path is coupled to the ink supply path for replenishing the ink supply path with the ink returned from the printhead. The coupling establishes an ink circulation circuit. The ink circulation circuit can be replenished with fresh ink from a main tank, as ink is withdrawn by the printhead for printing. In the circulation system an active through-flow ink degassing unit is provided to control the dissolved gas level of the ink in the ink circulation system.
摘要:
An ink circulation system for use in an inkjet printing apparatus includes an inkjet printhead, an ink supply path for supplying an ink to the inkjet printhead and an ink return path for returning ink not used for printing from the inkjet printhead. The ink return path is coupled to the ink supply path for replenishing the ink supply path with the ink returned from the printhead. The coupling establishes an ink circulation circuit. The ink circulation circuit can be replenished with fresh ink from a main tank, as ink is withdrawn by the printhead for printing. In the circulation system an active through-flow ink degassing unit is provided to control the dissolved gas level of the ink in the ink circulation system.
摘要:
An ink circulation system for use in an inkjet printing apparatus includes an inkjet printhead, a supply subtank for containing a supply of ink for the inkjet printhead and a return subtank for containing a surplus of ink not used by the inkjet printhead. The supply subtank is coupled with the return subtank and with the inkjet printhead via a first fluid path. A second fluid path couples the return subtank with the supply subtank for circulating the ink from the return subtank back to the supply subtank. This way a closed ink circulation path is realized. The ink flow from the supply subtank to the inkjet printhead and to the return subtank is controlled by means of a pressure difference between the ink in the supply subtank and the ink in the return subtank. A back pressure at the nozzle of the inkjet printhead is established via active pressure control means.
摘要:
An ink tank and a print head are mounted on a carriage for supplying ink to an inkjet print. The ink tank includes: one or more ink chambers, where each of the ink chambers includes one or more functional elements (1) symmetrically arranged, mounted and centered about a center plane of the respective ink chamber, and (2) positioned perpendicular to a direction of movement of the carriage. The functional elements include, for example, a feed outlet for feeding ink to the print head, a supply inlet for supplying ink to the ink chamber, an ink movement damper, an ink level sensor, a vacuum inlet to extract air from the ink chamber, and a re-flow inlet to allow re-flow of air bubbles from the print head to the ink chamber.
摘要:
A process for manufacturing a fuel tank including a baffle, and an attachment part and an offset part, both made of an incompressible material and being of fixed size and shape, the process including: manufacturing a fuel tank including a wall; making an opening in this wall; through this opening, introducing the baffle into the tank; attaching the baffle to the wall of the tank via its attachment part. The offset and attachment parts together describe a fixed angle, the baffle has a fixed shape and when it is being introduced into the tank, the baffle is rotated to be able to pass through the opening.
摘要:
An ink circulation system includes a supply subtank for supplying ink to an ink jet print head and a return subtank returning the ink not ejected by the ink jet print head. A print circulation path links the supply subtank with the ink jet print head and the return subtank for providing a print flow of ink from the supply subtank to the ink jet print head, the return subtank, and back to the supply subtank. A degas circulation path links the supply subtank with a through-flow degassing unit for providing a degas flow of ink from the supply subtank to the through-flow degassing unit and back to the supply subtank. The ink circulation system improves the degassing quality of the ink supplied to the ink jet print head of a printing apparatus is provided.
摘要:
In a video frame grabber for digitizing analog video signals which have a pure analog video signal component and a synchronization signal component, the synchronization signals are digitized along with the pure analog video signals. Video gain and offset, sync gain, and sync threshold can be adjusted electronically. A variable time delay can be imposed on the sampling clock signals and on horizontal reference signals. Optimal values can be determined for the various parameters.