摘要:
A printhead includes a liquid source, a first substrate, a filter, and a liquid chamber. Portions of the first substrate define a nozzle adapted to emit liquid from the liquid source. The liquid chamber includes a port. The liquid chamber is in fluid communication with the nozzle and the filter and is positioned between the first substrate and the filter.
摘要:
A printhead includes a liquid source, a first substrate, a filter, and a liquid chamber. Portions of the first substrate define a nozzle adapted to emit liquid from the liquid source. The liquid chamber includes a port. The liquid chamber is in fluid communication with the nozzle and the filter and is positioned between the first substrate and the filter.
摘要:
A continuous liquid printing system gas flow device includes a gas flow duct structure including a first wall and a second wall. The first wall and the second wall are positioned spaced apart and opposite each other to form an opening. The first wall is contoured such that a distance between the first wall and the second wall varies when viewed in a direction perpendicular to the opening.
摘要:
A continuous liquid printing system gas flow device includes a gas flow duct structure including a first wall and a second wall. The first wall and the second wall are positioned spaced apart and opposite each other to form an opening. The first wall is contoured such that a distance between the first wall and the second wall varies when viewed in a direction perpendicular to the opening.
摘要:
A printhead includes a liquid manifold. A filter is in fluid communication with the liquid manifold. A nozzle plate includes a length and an array of nozzles extending along the length of the nozzle plate. A liquid chamber is positioned between the nozzle plate and the filter. The liquid chamber is in fluid communication with the array of nozzles and the filter and includes a width that is substantially perpendicular to the length of the nozzle plate. The liquid chamber includes a structure that is spaced apart from the nozzle plate and spaced apart from the filter. The structure spans the width of the liquid chamber. A liquid source provides a liquid through the manifold, the filter, the liquid chamber under pressure sufficient to jet individual streams of the liquid from the array of nozzles.
摘要:
An optical sub-system has an optical element having a curved surface featured with a plurality of recurring surface tooling marks. The depth of any surface tooling mark is less than 0.2 wavelengths, whereby light is diffracted on the curved surface. A spatial filter blocks the diffracted light and passes the undiffracted light.
摘要:
An electro-mechanical grating device including: a base having a surface; a bottom conductive layer provided above said base; a spacer layer is provided and a longitudinal channel is formed in said spacer layer, wherein said spacer layer defines an upper surface and the channel having a first and a second opposing side wall and a bottom; a plurality of spaced apart ribbon elements disposed parallel to each other and spanning the channel, said ribbon elements are fixed to the upper surface of the spacer layer on each side of the channel and each of the ribbon elements is provided with a conductive layer; a mechanical stop provided between the bottom conductive layer and the bottom of the channel wherein the mechanical stop forms a rigid barrier that is separated from a lower ribbon surface of the ribbon elements by a distance h0.
摘要:
A scannerless range imaging system includes an illumination system and an electromechanical light modulator. The illumination system illuminates objects in the scene with modulated illumination of a predetermined modulation frequency, and the modulated illumination reflected from objects in the scene incorporates a phase delay corresponding to the distance of the objects from the range imaging system. The electromechanical light modulator, which is positioned in an optical path of the reflected illumination, operates at a reference frequency that corresponds to the predetermined modulation frequency and accordingly modulates the modulated illumination reflected from the object, thereby generating a phase image from the interference between the reference frequency and the reflected modulated illumination. The system further includes an optical system that deflects the reflected illumination to the electromechanical light modulator and redirects the phase image generated by the electromechanical light modulator to an image capture section. A color image may be captured by moving the optical system out of the optical path such that reflected illumination from the object will pass directly to the image capture section without contacting the electromechanical light modulator.
摘要:
A printhead includes a liquid manifold. A filter is in fluid communication with the liquid manifold. A nozzle plate includes a length and an array of nozzles extending along the length of the nozzle plate. A liquid chamber is positioned between the nozzle plate and the filter. The liquid chamber is in fluid communication with the array of nozzles and the filter and includes a width that is substantially perpendicular to the length of the nozzle plate. The liquid chamber includes a structure that is spaced apart from the nozzle plate and in contact with the filter. The structure spans the width of the liquid chamber and includes a plurality of flow through channels. A liquid source provides a liquid through the manifold, the filter, the liquid chamber under pressure sufficient to jet individual streams of the liquid from the array of nozzles.
摘要:
A jet break-off length measurement apparatus for a continuous liquid drop emission system is provided. The jet break-off length measurement apparatus comprises a liquid drop emitter containing a positively pressurized liquid in flow communication with at least one nozzle for emitting a continuous stream of liquid. Heater resistor apparatus is adapted to transfer pulses of thermal energy to the liquid in flow communication with the at least one nozzle sufficient to cause the break-off of the at least one continuous stream of liquid into a stream of drops of predetermined volumes. A sensing apparatus adapted to detect the stream of drops of predetermined volumes is provided. A control apparatus is adapted to determine a characteristic of the stream of drops of predetermined volumes that is related to the break-off length. Further apparatus is adapted to inductively charge at least one drop and to cause electric field deflection of charged drops. Jet stimulation apparatus comprising a plurality of transducers corresponding to the plurality of nozzles and adapted to transfer pulses of energy to the liquid sufficient to cause the break-off of the plurality of continuous streams of liquid into a plurality of streams of drops of predetermined volumes is also disclosed. Methods of measuring the jet break-off length using phase sensitive amplification circuitry are disclosed.