821 results about "Paper dust" patented technology

An inkjet printhead with a nozzle plate that has an exterior surface with formations for reducing its co-efficient of static friction. By reducing the co-efficient of static friction, there is less likelihood that paper dust or other contaminants will clog the nozzles in the nozzle plate. Static friction, or “stiction” as it has become known, allows dust particles to “stick” to nozzle plates and thereby clog nozzles. By patterning the exterior of the nozzle plate with raised formations, dust particles can only contact the outer extremities of each formation. This reduces friction between the particles and the nozzle plate so that any particles that contact the plate are less likely to attach, and if they do attach, they are more likely to be removed by printhead maintenance cleaning cycles.

The present invention relates to an elliptical acetabuliform blade for shredder, where a sheet metal is punched by a mold to integrally form an elliptical acetabuliform blade, where the periphery of elliptical blade is integrally formed into serration. The serrated periphery extending horizontally inwards to integrally form a planar disk for cutting paper along a longitudinal direction serves as a flank. The two ends along the major axis of the elliptical flank are each integrally formed into a hooked edge for cutting the paper along a longitudinal direction to form paper chips having double-tapering ends. These characteristics help to reduce the manufacturing cost, reduce the motor load and power consumption, to thereby enhance the market competitiveness.

A first paper-dust removing device is provided to mainly remove pulp fibers of the paper dust. The first paper-dust removing device is located downstream from a transfer position in the photosensitive drum rotating direction. A second paper-dust removing device is provided to mainly remove talc in the paper dust. The second paper-dust removing device may be located downstream from the first paper dust removing device in the photosensitive drum rotating direction or upstream from the transfer position in the sheet conveying direction along the sheet transport path. An additional first paper-dust removing device may be located upstream from the transfer position in the sheet conveying direction along the sheet transport path.

The invention discloses a safe and environmentally-friendly firecracker firing device. The safe and environmentally-friendly firecracker firing device consists of a pedestal, a firecracker firer, an exhaust fan, a smoke purifier and universal wheels, wherein the firecracker firer, the exhaust fan and the smoke purifier are mounted on the pedestal; the firecracker firer is divided into a firecracker firing layer, a paper scrap siding layer, a paper scrap gathering layer and a sound smoke mixing layer; the firecracker firer is connected with the exhaust fan; and an air outlet of the exhaust fan is connected with the smoke purifier. According to the safe and environmentally-friendly firecracker firing device disclosed by the invention, a long string of firecrackers is put in a firecracker firing box around a transverse partition, and ignition cores of the long string of the firecrackers are fired, so that the long string of the firecrackers is fired in the firecracker firing box, fired and exploded paper scraps drop to the paper scrap sliding layer through the firecracker firing box, and slide to a collecting drawer in the paper scrap gathering layer along an inclined slide plate. The exhaust fan is switched on while the firecrackers are fired, smoke waste gas in a sound and smoke mixing layer in the firecracker firer is exhausted through the exhaust fan, and is finally discharged through the exhaust tube via the smoke purifier. The safe and environmentally-friendly firecracker firing device has the advantages of being environmentally friendly, and safely firing the firecrackers.

An image recording apparatus includes an ink jet head which ejects ink toward a recording medium to record an image thereon, a paper feed unit which feeds the recording medium, a recording medium conveyance unit which conveys the recording medium, an intake fan provided at the recording medium conveyance unit to adsorb the recording medium by negative pressure, and an exhaust fan to remove dust from between the paper feed unit and the recording medium conveyance unit. The image recording apparatus prevents the ink jet head from not discharging ink drops and discharging ink drops curvedly because of paper dust and dust in the air, and prevents ink drops from failing to land in a proper position because of an airflow to form a new flow path in the apparatus, thereby recording a high-quality image with high reliability.