Abstract:
En un aparato de fusion, como el utilizado en xerografia, dos rodillos forman una linea de contacto entre ellos. Un miembro guia es posicionable para dirigir una hoja que se aproxima a la linea de contacto a entrar a la linea de contacto en un angulo, de modo que se crea un arco o rizo en la hoja entre la estacion de marcacion y la linea de contacto. El arco o rizo es util para evitar la transferencia de energia mecanica al aparato de fusion de la estacion de marcacion. Cuando el borde trasero de la hoja sale de la estacion de marcacion, el miembro guia es colocado para enderezar la hoja.
Abstract:
In a fusing apparatus, such as used in xerography, two rolls (12,14) form a nip therebetween. A guide member (20) is positionable to direct a leading edge of a sheet (5) approaching the nip to enter the nip at an angle so that an arc or buckle is created in the sheet (5) between a marking station (104,106,108) and the nip. The arc or buckle is helpful in avoiding the transfer of mechanical energy from the fusing apparatus (12,14) to the marking station (104). As the trailing edge of the sheet (S) exits the marking station (104), the guide member (20) is positioned to straighten the sheet.
Abstract:
Un método evalúa la posición de una cabeza de impresión en un montaje de cabeza de impresión de arreglo alternado a todo lo ancho (SFWA, por sus siglas en inglés). El método incluye seleccionar una primera configuración de cabeza de impresión para imprimir un primer patrón de prueba sobre un miembro receptor de imágenes, generar datos de corrección de posición para desplazamientos de arrastre y unión obtenidos de datos de imágenes capturados del primer patrón de prueba, comparar los datos de corrección de posición con al menos un umbral en un intervalo de desplazamiento, y operar al menos un accionador de cabeza de impresión de acuerdo con los datos de corrección de posición en respuesta a los datos de corrección de posición que exceden al menos un umbral predeterminado en el intervalo de desplazamiento.
Abstract:
A device for inverting a sheet along a path in an electric photographic printing machine. A gateless sheet inverter is provided in which a curved portion of a sheet path branch intersects a second portion of the sheet path to form a curved inverter throat. As the sheet is driven from the curved branch portion of the path into the throat portion the beam strength of the sheet causes the trail edge of the sheet to flip toward a second nip leading to the second sheet path. A pair of reversing rolls captures the lead edge of the sheet to be inverted and then reverses to drive the sheets out of the second nip formed by a tri-roll arrangement. A sheet having a radius of curvature equal to or greater than the radius of curvature of the throat will be guided along the throat baffle and fed through the second nip. To further assist in assuring the trail edge flips to the second sheet path an air knife can be added at the intersection of the path branches to assist in moving the trail edge into the second path branch. A fixed deflector can also be added and configured so that the trail edge of the sheet is guided into the second branch of the sheet path to increase the latitude of sheet curvature that can be handled by the device, the deflector further having a curved radius on the portion of the deflector contacting the sheet so that coated sheets are not damaged.
Abstract:
PROBLEM TO BE SOLVED: To prevent the print quality of a form sending-in guide in a transfer area from deteriorating. SOLUTION: A printer is equipped with an electric charge receptor such as a photoreceptor 10, a transfer corotron 14 which determines the transfer area associated with the electric charge receptor, and a peeling corotron 16 and further a guide member 18 which sends a sheet in the transfer area is provided in the transfer area. The guide member 18 has a plurality of ribs (30) supports the sheet in the transfer area so that it moves in a processing direction (in the moving path direction of the sheet). A 1st group of ribs (30) is set to a direction oblique to the processing direction and a 2nd group of ribs is set to a 2nd direction oblique to the processing direction. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a fusing apparatus used for electrostatographic printing. SOLUTION: As for the fusing apparatus, a nip is formed between two rolls. A guide member is positioned so as to direct the lead edge of the sheet toward the nip at an angle which causes the sheet to form an arc between the marking station and the nip as the lead edge of the sheet enters the nip. The transmission of mechanical energy from the fusing apparatus to the marking station is prevented by the arc of the sheet. The guide member is positioned so as to straighten the sheet as the trail edge of the sheet substantially exits the marking station. COPYRIGHT: (C)2004,JPO