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Browse Prior Art Database

INK JET DRYER WITH INDIVIDUALLY ACTUABLE ELEMENTS

IP.com Disclosure Number: IPCOM000024911D
Original Publication Date: 1982-Oct-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 126K

Publishing Venue

Xerox Disclosure Journal

Abstract

Although multiple architectures exist for ink jet printing systems, a common characteristic for each of those systems is the generation of ink droplet patterns on a recording medium to convey a message as one views the recording medium. One proposed ink jet printing design comprises a droplet generator having multiple nozzles spaced across the width of a print medium such that each nozzle sends ink droplets along a controlled trajectory to impact the recording medium at a designated portion of that medium. By controlling the trajectory of the ink droplets after they are ejected from the drop generator, the desired pattern of information can be encoded onto the print medium.

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XEROX DISCLOSURE JOURNAL

INK JET DRYER WITH INDIVIDUALLY ACTUABLE ELEMENTS
Karl 8. Ayash
Kent W. Hemphill
Youti Kuo

Proposed Classification US. CI. 346/75
Int. C1. Cold 15/18

Although multiple architectures exist for ink jet printing systems, a common characteristic for each of those systems is the generation of ink droplet patterns on a recording medium to convey a message as one views the recording medium. One proposed ink jet printing design comprises a droplet generator having multiple nozzles spaced across the width of a print medium such that each nozzle sends ink droplets along a controlled trajectory to impact the recording medium at a designated portion of that medium. By controlling the trajectory of the ink droplets after they are ejected from the drop generator, the desired pattern of information can be encoded onto the print medium.

As the printing speed and droplet resolution of the ink jet printing system is increased, the sophistication of the electronics and ink handling systems is also increased. One other consideration in a high-resolution, high-throughput system is in ink drying. If the ink jet printer is to operate at high speeds, the throughput may be so great that the ink may not have an appropriate time in which to dry prior to transfer of the recording medium to either a stack of other printed pages or to a transport for moving the printed medium along a paper path. For these reasons, various techniques for drying wet ink on the recording medium have been suggested in the art.

The present proposal concerns a selective drying technique whereby an ink dryer is selectively energized in accordance with a scheme whereby more power is applied to the paper to dry the ink on those regions more densely covered with ink droplets. An array of drying lamps is positioned in relation to a paper path so that wet ink directed to the paper from an ink jet printhead can be dried prior to transfer to other portions of the ink jet printer. On each page a pattern of ink droplets is directed from the ink jet printhead to the paper so that an information pattern appears on the page. Certain portions of the paper are encoded with a high density of ink droplets while other sections of the paper receive no ink coverage.

The present proposal envisions selectively addressing and activating elements comprising the lamp array so that elements opposite those portions of the paper with...