摘要:
An apparatus and method for producing a stream of ink drops in a continuous ink jet printer having a maximum allowable number of fast satellite drops. An ink, which may be a hot-melt ink in its liquid phase, is pressurized for continuous flow to a nozzle and a rectangular or triangular waveform is generated at a fixed frequency. The waveform is applied to a transducer coupled to the nozzle such that nozzle vibrates and the ink flow is perturbed and discharged from the nozzle as primary drops with satellite drops formed therewith. The harmonic content of the rectangular or triangular waveform is adjusted until the desired number of fast satellite drops suitable for desired image formation are formed in the stream of primary drops. In a preferred embodiment, the desired number of fast satellites is a maximum of three.
摘要:
A hot melt ink composition for use in continuous ink jet printing comprising an electrolyte, an electrolyte-solvating and dissociating compound and an image-forming agent, said ink being solid at about 25.degree. C., said ink liquefying at a temperature between 75.degree. C. and 175.degree. C., and said ink in the liquid stage having a conductivity of greater than about 100 microsiemens/cm.
摘要:
Strand coating methods and systems having an applicator head pivotally mounted adjacent a substrate, a coating material dispenser mounted on the applicator head, a strand guide mounted on the applicator head, wherein the strand guide and the coating material dispenser are adjustably positionable in unison relative to the substrate by pivoting the applicator head to vary the spacing of the strands relative to the substrate.
摘要:
Strand coating methods having an applicator head pivotally mounted adjacent a substrate, a coating material dispenser mounted on the applicator head, a strand guide mounted on the applicator head, wherein the strand guide and the coating material dispenser are adjustably positionable in unison relative to the substrate by pivoting the applicator head to vary the spacing of the strands relative to the substrate.