摘要:
The device comprises a housing (10) having a powder inlet opening (12) in an upper face (13) thereof. A dust shield (14) upstands from the upper face (13) adjacent said powder inlet opening (12). A movable box (16) for accommodating a bag (18) containing powder has an open end (20). Co-operating guides (22, 24) provided respectively on the housing (10) and on the box (16) constrain movement of the box (16) between a first position in which the open end (20) is closed by the dust shield (14) and a second position in which the open end (20) mates with the powder inlet opening (12) to allow powder from the bag (18) to fall through the powder inlet opening (12). Thereby, discharge of the powder contents of a flexible material bag can be achieved in a convenient manner.
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:
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:
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.
摘要:
The invention relates to a process for the manufacture of an article comprising a surface treatment step of at least part of the article in the substantial absence of oxygen; the surface of the article which is to be treated consists of a material which comprises at least one polyolefin and which contains less than 5 mg of oxygen per kg (no account being taken of the optional additives).
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:
After purging an inkjet print head, large drops are formed on the nozzle plate of the inkjet printer. In order to provide sufficient wiping before printing, drops are first removed by skimming the print head. A skimmer, such as a wiper of A wiping system, just touches the drops that are drained from the print head.
摘要:
An ink supply system for feeding ink from an ink cartridge to an inkjet printer includes a dry-break valve system and two coupling elements. Preferably use is made of a hollow tappet rod as a coupling element. The valves in the system are automatically opened in a single action during coupling without introduction of air into the system. The system allows for a high volume ink flow and prevents leakage from the ink cartridge and the printer due to pressure changes.