Abstract:
An electrostatographic printing apparatus that includes a charge receptor endless belt; a transfer nip including a BTR roll in contact with the charge receptor at a transfer zone, a continuous media supplied to the transfer zone, and the transfer nip adapted for systematic engagement and disengagement with the continuous media for synchronization of image transfer from the charge receptor to the media. More specifically, in response to recognition of imaging inconsistencies such as belt seams, test patches, or label format pitches, the endless belt disengages from the continuous media at the BTR roll. The BTR roll is appropriately turned on and off and the continuous media reversed in direction commonly known as a ‘Pilgrim step’, then returned to normal direction to synchronize the transfer of images to the continuous media, wherein there is substantially zero wrap of the continuous media on the BTR roll during the engagement of the continuous media with the charge receptor belt.
Abstract:
A processor places a printer apparatus in a reduced activity mode after printing requests have not been received for an “inactivity” time period. A belt support device rotates a photoreceptor belt at a reduced speed when the printer apparatus enters the reduced activity mode and for a “delay” time period after the printer apparatus enters the reduced activity mode. The belt support device returns the rotational speed of the photoreceptor belt to the original speed if a new printing request is received during the delay time period. However, the belt support device stops rotation of the photoreceptor belt and reduces the belt tension if the delay time period expires without receiving a new printing request.
Abstract:
An electrostatographic printing apparatus that includes a charge receptor endless belt; a transfer nip including a BTR roll in contact with the charge receptor at a transfer zone, a continuous media supplied to the transfer zone, and the transfer nip adapted for systematic engagement and disengagement with the continuous media for synchronization of image transfer from the charge receptor to the media. More specifically, in response to recognition of imaging inconsistencies such as belt seams, test patches, or label format pitches, the endless belt disengages from the continuous media at the BTR roll. The BTR roll is appropriately turned on and off and the continuous media reversed in direction commonly known as a ‘Pilgrim step’, then returned to normal direction to synchronize the transfer of images to the continuous media, wherein there is substantially zero wrap of the continuous media on the BTR roll during the engagement of the continuous media with the charge receptor belt.
Abstract:
A pressurized ink delivery system having two delivery reservoirs in an inkjet printer enables a control system to alternate between the two reservoirs for printhead supply without coupling pressurized air from a delivery reservoir to a low pressure source of ink. Each delivery reservoir includes a conduit having an orifice that enables the pressure within a delivery reservoir to exit the reservoir before the ink delivery reservoir is fluidly connected to the low pressure source of ink for refilling of the delivery reservoir. By dropping the high pressure reservoir to atmosphere and then switching the seal actuators for the two reservoirs, the spray of ink is avoided.
Abstract:
In a color marking assembly, a series of ROS units are aligned above a photoconductive surface. These units have side mounts and a side positioned outboard linear actuator connecting them to this assembly. The inboard mounts are attached to a first inboard side of the ROS, and the outboard mounted linear actuators are attached to a second outboard side of the ROS unit. The inboard mount is an elongated bar extending beyond the height of the ROS unit. This elongated bar has hinged portions on both its top and bottom connections to the ROS unit. The linear actuator that is positioned on the outboard side of the ROS unit has a rigid sphere resting in a V-housing in a V-block. This actuator configuration and the board mount enable the ROS unit to be easily deskewed when required to provide improved vibration-free images.
Abstract:
In a color marking assembly, a series of ROS units are aligned above a photoconductive surface. These units have side mounts and a side positioned outboard linear actuator connecting them to this assembly. The inboard mounts are attached to a first inboard side of the ROS, and the outboard mounted linear actuators are attached to a second outboard side of the KROS unit.The inboard mount is an elongated bar extending beyond the height of the ROS unit. This elongated bar has hinged portions on both its top and bottom connections to the ROS unit. The linear actuator that is positioned on the outboard side of the ROS unit has a rigid sphere, resting in a V-housing in a V-Block. This actuator configuration and the board mount enable the ROS unit to be easily deskewed when required to provide improved vibration-free images.
Abstract:
A contact blade, formed of a plurality of blade segments, is mounted parallel to and spaced from an imaging surface. A plurality of blade lifters, one blade lifter for each of the blade segments, are individually movable from an inoperative position immediately adjacent to the blade segments to an operative position. When in the operative position the engage lifters engage the blade segments and deflect the blade segments. This causes tips of the blade segments to contact a print sheet contacting the imaging surface and press the print sheet against the imaging surface. A lifter activating device moves a current select number of adjacent blade lifters into the operative position.
Abstract:
A processor places a printer apparatus in a reduced activity mode after printing requests have not been received for an “inactivity” time period. A belt support device rotates a photoreceptor belt at a reduced speed when the printer apparatus enters the reduced activity mode and for a “delay” time period after the printer apparatus enters the reduced activity mode. The belt support device returns the rotational speed of the photoreceptor belt to the original speed if a new printing request is received during the delay time period. However, the belt support device stops rotation of the photoreceptor belt and reduces the belt tension if the delay time period expires without receiving a new printing request.
Abstract:
A pressurized ink delivery system having two delivery reservoirs in an inkjet printer enables a control system to alternate between the two reservoirs for printhead supply without coupling pressurized air from a delivery reservoir to a low pressure source of ink. Each delivery reservoir includes a conduit having an orifice that enables the pressure within a delivery reservoir to exit the reservoir before the ink delivery reservoir is fluidly connected to the low pressure source of ink for refilling of the delivery reservoir. By dropping the high pressure reservoir to atmosphere and then switching the seal actuators for the two reservoirs, the spray of ink is avoided.
Abstract:
This is a paper web transporting component that is useful in a duplexing system that uses a paper web to be imaged. The unit has an IOWA roller (backup roll) with an image sensor above it and a cleaning web structure below it. Since excess toner or ink in duplexing systems can adhere to the transport roll, the sensor will pick up these impurities when scanning the surface of the paper web. Therefore, these impurities must be removed from the transport roll or scanning for proper image registration will be adversely affected. The movement of the paper web causes the transport roll to rotate so that the sensor can scan the entire surface of the transport roll.