摘要:
There is provided a technique with which an abnormal discharge state in a discharge component can be determined on the basis of residual vibration. A printer includes a discharge component that discharges ink, a detector that detects residual vibration in the discharge component, and a tester that tests the discharge component on the basis of the change in the period of the residual vibration.
摘要:
A printing device that forms a background by a first ink and images on the background by a second ink includes a head having first and second nozzle lines that eject, respectively, the first and second inks. The inks are ejected as the head moves, with respect to a medium, in a main scanning direction intersecting the first and second nozzle lines. A transport section transports the medium in a sub-scanning direction along the first and second nozzle lines. In an ejecting operation, the first and second inks are ejected in the relative movement in the main scanning direction and the relative transportation in the sub-scanning direction is performed. In the sub-scanning direction, first and second nozzle line used areas are set where the first and second inks, respectively, are ejected from the first and second nozzle lines. A nozzle unused area is defined therebetween.
摘要:
An apparatus for printing an image on a transparent medium based on a selected mode, the apparatus includes: a head that ejects ink droplets from nozzles, wherein when a first mode is selected, the head prints a first image on the transparent medium, prints a background image on the first image, and prints a second image which is different from the first image on the background image, and wherein when a second mode is selected, the head prints a second image on the transparent medium, prints a background image on the second image, and prints a first image on the background image.
摘要:
Droplet deposition apparatus including at least one droplet ejection unit having a plurality of fluid channels disposed side by side in a row, an actuator, and a plurality of nozzles, said actuator being actuable to eject a droplet of fluid from a fluid channel through a respective nozzle, a support member for said at least one droplet ejection unit, a first conduit extending along said row and to one side of both said support member and said at least one droplet ejection unit for conveying droplet fluid to each of the fluid channels of said at least one droplet ejection unit; and a second conduit extending along said row and to the other side of both said support member and said at least one droplet ejection unit for receiving droplet fluid from each of the fluid channels of said at least one droplet ejection unit.
摘要:
A liquid jet apparatus according to the present invention includes a drive waveform generator adapted to generate a drive waveform signal, a modulator adapted to execute pulse modulation on the drive waveform signal, a digital power amplifier adapted to power-amplify the modulated signal, on which the pulse modulation is executed by the modulator, with a pair of switching elements push-pull coupled with each other, a lowpass filter adapted to smooth the amplified digital signal obtained by the power-amplification of the digital power amplifier, and a modulation period modification circuit adapted to modify a modulation period of the pulse modulation of the modulator based on data of the drive waveform signal.
摘要:
Images are printed up to the edges of printing paper while preventing ink droplets from depositing on the platen. According to the present invention, an area R for ejecting image-forming ink droplets is specified for a region lying beyond the edges of a printing paper P. The pixels of an external upper edge portion Rfp extending beyond the upper edge Pf are recorded solely by the nozzles disposed opposite the downstream slot of the platen. An internal upper edge portion Rfq, which is disposed downstream of the external upper edge portion Rfp, is recorded solely by the nozzles disposed opposite the downstream slot. When dots are recorded, blank spaces are prevented from forming in the edge portions of the printing paper, and ink droplets are prevented from depositing on the platen when the printing paper P deviates from its intended position, provided the upper edge of the printing paper P remains on the inside of the external upper edge portion Rfp or internal upper edge portion Rfq. The external upper edge portion Rfp and internal upper edge portion Rfq are selected such that their dimensions in the sub-scanning direction remains substantially the same when different recording systems or recording densities are used for the pixels, provided the printing paper used for recording the images has the same dimensions and is composed of the same material.
摘要:
A processing liquid discharge device includes: an accommodation unit configured to accommodate a processing liquid; a spray nozzle; a supply flow path for supplying the processing liquid from the accommodation unit to the spray nozzle; a pump; a valve provided in the supply flow path between the spray nozzle and the pump; a circulation flow path including one end being connected to the supply flow path between the valve and the pump, or to the valve, and the other end being connected to the supply flow path between the pump and the accommodation unit, or to the accommodation unit; and a controller that controls the valve to be set in a communication state after activating the pump to cause the processing liquid to flow from the supply flow path to the circulation flow path while controlling the valve to be set in a cut-off state.
摘要:
A maintenance method and a liquid discharge apparatus. The maintenance method is performed by a liquid discharge apparatus including a first liquid discharge head to discharge ink, a second liquid discharge head to discharge pretreatment liquid, and a liquid receiver into which the ink and the pretreatment liquid are discharged, and the maintenance method includes flushing the ink and the pretreatment liquid into the liquid receiver, the flushing including discharging the ink into the liquid receiver and then discharging the pretreatment liquid into the liquid receiver. The liquid discharge apparatus includes the first liquid discharge head, the second liquid discharge head, the liquid receiver, and a controller to control the first liquid discharge head and the second liquid discharge head to discharge the pretreatment liquid onto a print medium and then discharge the ink onto the print medium.
摘要:
A liquid discharge apparatus includes a liquid discharge head configured to discharge a liquid, a liquid cartridge configured to store the liquid to be discharged from the liquid discharge head, a holder to which the liquid cartridge is detachably attachable, a timer configured to countdown a time, and circuitry configured to control the liquid discharge head to discharge the liquid as a discharge operation, control the liquid discharge head to stop the discharge operation, determine an attachment or a detachment of the liquid cartridge to or from the holder while the discharge operation is stopped, control the timer to prepare countdown of the time in response to a detachment of the liquid cartridge from the holder, and control the liquid discharge head to continue stopping the discharge operation in response to an attachment of the liquid cartridge to the holder before the time has reached zero.
摘要:
A printing apparatus includes a head that faces a medium supported by a medium support unit and ejects a liquid, an interference object sensor including a detector that detects an interference object with the head, and a cover that can switch the detector to a shielded state and to an exposed state.