A method for treating a substrate is disclosed in which a propellant stream is passed through a channel and directed toward a substrate. Substrate pre-marking or post-marking treatment material is controllably introduced into the propellant stream and imparted with sufficient kinetic energy thereby to be made incident upon a substrate. A multiplicity of channels for directing the propellant and treatment material allow for high throughput, high resolution in-situ treatment. Marking materials and treatment materials may be introduced into the channel and mixed therein prior to being made incident on the substrate, or mixed or superimposed on the substrate without registration. One example is a single-pass, full-color printer.
CROSS-REFERENCE TO RELATED APPLICATIONS
The present invention is related to U.S. patent application Ser. Nos. 09/163,893, 09/164,124, 09/164,250 now U.S Pat. No. 6,340,216, Ser. No. 09/163,765, 09/163,839 now U.S. Pat. No. 6,290,342, 09/163,954 now U.S. Pat. No. 6,328,409, Ser. No. 09/163,924, 09/163,904 now U.S. Pat. No. 6,116,718, Ser. No. 09/163,799, 09/163,664 now U.S. Pat. No. 6,265,050, 09/163,518 now U.S. Pat. No. 6,291,088, Ser. No. 09/164,104, 09/163,835 now U.S. Pat. No. 6,136,442, issued U.S. Pat. Nos. 5,717,986, 5,893,015, 5,968,674, and 5,853,906, and U.S. Pat. No. 6,289,196, each of the above being incorporated herein by reference.
A printhead assembly has one or more printhead chips mounted end or end in or on a housing. The housing has an elongate air duct that supplies air to the printhead chips. The duct is open at both ends so the assembly may be used in left and right hand configurations.
A system to deposit drops on a substrate includes a dispenser to dispense the drops, a shutter disposed between the dispenser and the substrate to focus the drops, and a screen, disposed between the dispenser and the shutter, configured to provide a charge to the drops.
Various systems and techniques are disclosed for stopping, selectively controlling, and optimizing a flow of particles in a flowing stream. The systems and techniques utilize a multi-electrode assembly and various voltage waveforms applied to those electrodes. The particles flow past or near the electrode assembly and their flow is controlled by the configuration and arrangement of the electrodes and the voltage waveforms applied thereto. An additional strategy for countering particle leakage flow is also described.
An electrostatic gating assembly utilizing at least three electrodes is disclosed. The assembly is particularly well suited for controlled administration of small particles.
Various venturi configurations are described that are particularly significant for ballistic aerosol marking (BAM) applications. The specific venturi geometries enable the printing of lines having sharp edges and particular widths, using relatively low pressures.
