Patent
Method and apparatus for driving an ink jet head
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TLDR
In this paper, a drive pulse is applied to each energy-generating element several times, thereby forcing the ink outwards from the ink outlet port and increasing a surface area of the ink from a surface of the meniscus.Abstract:
An ink jet head having ink chambers, energy-generating elements provided in the ink chambers, respectively, and ink outlet ports communicating with the ink chambers, respectively. The ink jet head may be left unused for a time longer than a predetermined time, with a meniscus formed in each ink outlet port. In this case, a drive pulse is applied to each energy-generating element several times, thereby forcing the ink outwards from the ink outlet port and increasing a surface area of the ink from a surface area of the meniscus. Then, a negative pressure is applied in each ink chamber, thereby drawing the ink back toward the ink chamber, thus forming a meniscus again in the ink outlet port. In this condition, a drive pulse is applied to the energy-generating element, thus ejecting an ink droplet from the ink outlet port to record data.read more
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High frequency droplet ejection device and method
TL;DR: In this paper, a method for driving a droplet ejection device having an actuator, including applying a multipulse waveform that includes two or more drive pulses to the actuator to eject a single droplet of a fluid, wherein a frequency of the drive pulses is greater than a natural frequency, fj, of the device.
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TL;DR: An ink delivery system for a printer as mentioned in this paper includes an ink reservoir (15), a printhead assembly (12), a pump (23) configured to provide ink from the ink reservoir to the print head assembly at a selected pressure, and a controller (20) configures to adjust the selected pressure based on a characteristic of an image to be printed.
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Imaging apparatus and methods for homogenizing ink
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TL;DR: In this article, an imaging apparatus (100, 200, 300) and a method of homogenizing ink (212, 312) are described, where a pump (220, 320) causes the ink to circulate between the ink supply (210, 310) and the printhead (214, 314).
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Ink jet recording device
TL;DR: In this paper, the problem of dot plugging is addressed by driving a printing head using a drive control means and protecting a jet orifice with a protecting means, if a power supply is suspended from the power supply means and the failure to set a printer head at a home position is detected.
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Methods and apparatus for preventing clogging in ink jet printers
TL;DR: In this paper, the authors present a method for preventing ink clogging in impulse ink jet printers using a control means unit for generating and applying the sequence to the nozzle and for controlling the amplitude of the control signals.
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TL;DR: In this article, an ink jet recording apparatus has a recording head provided with a plurality of ink discharging openings and an ink chamber commonly connected to the ink paths, and the recording thermal energy generating element can be driven in a specific driving condition with a smaller thermal energy input rate than in the recording operation.
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Printing apparatus and method utilizing a light-activated ink release system
Ravi Sharma,Nicholas L Abbott +1 more
TL;DR: In this article, a printing apparatus in the form of an inkjet printer and a printing method utilizes a light-activated ink release system, where the ink can form an unextended droplet meniscus.
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Ink jet recorder
TL;DR: In this article, the authors describe an ink jet recorder with a head having ink ejection orifices, a cap for covering the orifice, a suction device for sucking ink from the head covered with the cap, a moving device for moving the cap with respect to the head, and a control device for controlling the moving and suction devices.