Randy Russell Ray

US Patent:

47092483, Nov 24, 1987

Filed:

Dec 22, 1986

Appl. No.:

6/945138

Inventors:

Michael J. Piatt - Enon OH
Randy Ray - Miamisburg OH

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G01D 1516

US Classification:

346140R

Abstract:

Ink jet printer for printing along a linear print zone with a plurality of insertable print/cartridges employs a carriage for traversing the print zone and supporting the print/cartridges with their orifice arrays mutually indexed to a carriage reference that is parallel to the direction of carriage traverse; detecting and storing the relative transverse locations of the indexed orifice arrays; and controlling the actuations of the supported print/cartridges in accordance with their detected transverse locations. A detecting and storing sub-system detects and stores inter-array spacings in the form of encoder mark-count plus intra-mark phase information. A control sub-system: (1) outputs printing information signals for the print/cartridges on the basis of the stored mark-count information; and (2) enables print/cartridge actuations in sequential orders based on the stored intra-mark phase information. These orders differ in forward and retrace printing.

US Patent:

47092440, Nov 24, 1987

Filed:

Dec 22, 1986

Appl. No.:

6/945137

Inventors:

Michael J. Piatt - Enon OH
James T. Theodoras - Xenia OH
Randy Ray - Miamisburg OH

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G01D 1516

US Classification:

346140R

Abstract:

Ink jet printing apparatus of the type having a carriage that traverses a printing zone with a plurality of insertable print/cartridges includes a system for use in coordinating the transverse printing of such print/cartridges to compensate for variable transverse print/cartridge locations. The system employs an electrooptical scanner located along the transverse path of the carriage for signalling the passage of a print/cartridge feature(s) that are indicative precisely of an instantaneous horizontal position, vis-a-vis the scanner, of the orifice array of a passing print/cartridge; a carriage detector for periodically sensing and signalling the successive instantaneous positions of the carriage during its traversing movement; and means, responsive to signal inputs from the scanner and the carriage detector, for computing and storing horizontal location data for each print/cartridge orifice array.