摘要:
Systems and methods are provided for aligning printheads of a printing system. One embodiment is a system for aligning printheads of a printing system. The system includes a first sensor configured to detect lateral positions of an upstream printhead relative to sections of a web of print media traveling through the printing system, and a second sensor configured to detect lateral positions of a downstream printhead relative to the sections of the web. The downstream printhead is placed after the upstream printhead in the direction of travel of the web. The system also includes a controller configured to align the downstream printhead with the sections of the web based on the lateral positions of the upstream printhead and the lateral positions of the downstream printhead.
摘要:
Systems and methods are disclosed for determining an operational range of colorant densities and heating powers that result in successful drying for a print media that is based on a drying quality of test images printed by a printing system. One embodiment comprises a printing system that applies colorant onto a continuous-form medium and applies heat to the medium based on a heating power. The printing system prints a plurality of test images onto the medium, where one or more of a colorant density and a heating power vary for each of the printed test images. The printing system determines a drying quality for the printed test images, and calculates an operational range of colorant densities and heating powers for the medium based on the drying quality of the printed test images.
摘要:
Systems and methods for tuning Key (K) black ink printed by a production printer. In one embodiment, an ink tuning system is implemented in a printing system. The printing system includes a production printer that is operable to print color ink onto a continuous-form medium, and includes a radiant dryer that is operable to dry the ink that is applied to the medium. The ink tuning system identifies areas of K black ink designated for printing on the medium by the production printer, and applies a liquid agent to the areas of K black ink to increase the liquid mass of the K black ink before the medium enters the radiant dryer.
摘要:
Systems and methods are provided for controlling a dryer of a printing system. The system comprises a controller and a sensor. The controller is operable to determine a speed of a web of print media traveling through a dryer, and to apply power to a heating element of the dryer based on a power profile that models a non-linear relationship between power applied to the heating element and speed of the web. The controller is further able to determine a type of media for the web, and to select the power profile based on the type of media.
摘要:
A method is disclosed. The method includes setting a desired flow rate for ink in an ink jet printer, measuring an actual flow rate of the ink, determining if the measured flow rate is equal to the desired flow rate and adjusting the flow rate if the measured flow rate is not equal to the desired flow rate.
摘要:
Systems and methods for adjustable interlacing of drying rollers in a print system. One system is an apparatus that includes first rollers that conduct heat from a heat source, and dry a web of print media as the web travels over a front side of the first rollers in a first direction. A last roller of the first rollers turns the web in a second direction. The apparatus also includes second rollers disposed a distance above the first rollers and that transport the web in the second direction. The apparatus further includes a movement mechanism that reduces the distance between the second rollers and the first rollers to cause the second rollers to occupy spaces between the first rollers so that the web traveling in the second direction contacts a back side of the first rollers to further dry the web.
摘要:
Fire control and containment for a production printing system that includes a dryer unit, an air intake fan, and an exhaust fan. A fire control and containment system includes an enclosure surrounding the dryer unit. The enclosure includes controllable doors, a temperature sensor, and an air pressure sensor in the enclosure. The fire containment and control system also includes a controller operable to detect a fire event based on changes in air pressure and air temperature in the enclosure detected by the air pressure and air temperature sensors. In response to detecting the fire event, the controller closes the doors of the enclosure to prevent the print medium from entering, controls the air intake fan and the exhaust fan to reduce the air pressure in the enclosure, and controls the dryer unit to reduce temperature in the enclosure to suppress fire.
摘要:
Fire control and containment for a production printing system that includes a dryer unit, an air intake fan, and an exhaust fan. A fire control and containment system includes an enclosure surrounding the dryer unit. The enclosure includes controllable doors, a temperature sensor, and an air pressure sensor in the enclosure. The fire containment and control system also includes a controller operable to detect a fire event based on changes in air pressure and air temperature in the enclosure detected by the air pressure and air temperature sensors. In response to detecting the fire event, the controller closes the doors of the enclosure to prevent the print medium from entering, controls the air intake fan and the exhaust fan to reduce the air pressure in the enclosure, and controls the dryer unit to reduce temperature in the enclosure to suppress fire.
摘要:
Systems and methods are provided for predictively compensating for frequency-based shifts of the position of a web of print media in a continuous-forms printer. The system comprises a sensor and a controller. The sensor is able to detect lateral shifts of the web of print media traveling through the continuous-forms printer. The controller is able to identify a frequency of the lateral shifts of the web, and to steer the web based on the frequency.
摘要:
Systems and methods control the rate of cooling of a print media downstream of a drying process. One embodiment comprises a printing system. The printing system includes a print engine that applies colorant onto a continuous-form media. The printing system further includes a radiant dryer downstream of the print engine along a media path, and includes a drum downstream of the radiant dryer along the media path. The drum includes a heat source. The printing system estimates a temperature of the media, estimates a temperature of the drum, and adjusts heat applied to the drum utilizing the heat source to maintain the temperature of the drum below the temperature of the media within a threshold amount.