Ink jet copier
AssigneeInternational Business Machines Corporation
InventorsSidney Jared Fox, Van Clifton Martin, Danny Allen Van Hook
Life of this patent
Estimating the term…
Abstract
An ink jet copier is provided with a document scanner which scans a document to be copied one line at a time producing non-coded binary data. The binary data is inserted in storage in a predetermined arrangement. Stored data is removed from selected predetermined locations in accordance with an algorithm and applied to a plurality of ink jet nozzles arranged in multiple linear arrays about the circumference of a rotating paper drum. The data signals selectively applied to the ink jet printers control the deposition of ink on the paper supported on the rotating drum to cause the reproduction of the original scanned image on a predetermined interlaced basis.
Claims6
An array copier comprising:
- first means for providing a serial digital data stream corresponding to lines of video information of an image to be reproduced;
- second means for supporting a medium for receiving the image and including a positionable array of printing elements in juxtaposition said medium support and for providing a synchronizing signal indicative of the relative position of said array and medium support;
- clock means responsive to said synchronizing signal from said second means for providing first control signals;
- a first control signal generator responsive to said first control signals for providing second control signals corresponding to positional information relative to said serial digital data stream;
- a source organizer responsive to said first and second control signals for receiving and storing said serial digital data stream in predetermined storage locations under control of said first control signals and for supplying said stored data signals from different predetermined storage locations under control of said first and second control signals;
- random access memory means responsive to the said first and second control signals for alternately reading the data signals stored in addressable memory locations predetermined by the said first and second control signals and providing the said signals to the array of printing elements included in the said second means for controlling the state of the said printing elements and for storing the data signals supplied by the said source organizer in addressable memory locations predetermined by the said first and second control signals;
- third means for translating said array with respect to the medium support in a first direction;
- and
- fourth means for translating said array with respect to the medium support in a second direction substantially orthogonal to the first direction N print resolution elements in a single complete scan of the array and medium support in the said first direction.
Dependencies are inferred from the claim text.