Automatic print cartridge alignment sensor system

Details Automatic print cartridge alignment sensor system Automatic print cartridge alignment sensor system

1991-10-31

1994-02-22

Fuller, Benjamin R.

Recorders

Markers and/or driving means therefor

With ink supply to marker

2502221, 250561, 356375, B41J 2125, G01V 904

Patent

active

052892085

ABSTRACT:
Apparatus and techniques are disclosed for aligning the operation of the ink jet printhead cartridges of a multiple printhead ink jet swath printer that includes a print carriage that is movable along a horizontal carriage scan axis, (b) first and second ink jet printhead cartridges supported by the movable carriage for printing onto a print media that is selectively movable along a vertical media scan axis, and (c) an optical sensor supported by the movable carriage. The optical sensor includes a quad photodiode detector whose outputs are indicative of the horizontal positions of vertical test lines imaged on the detector in conjunction with horizontal alignment correction, as well as the vertical positions of horizontal test lines imaged on the detector in conjunction with vertical alignment correction.

REFERENCES:
patent: 4510504 (1985-04-01), Tamai et al.
patent: 4550322 (1985-10-01), Tamai
patent: 4754289 (1988-06-01), Kudo
patent: 4916638 (1990-04-01), Haselby et al.
"Print Registration Test for Bidirectional Printer" IBM Technical Disclosure Bulletin, vol. 30, No. 10, Mar. 1988 pp. 38-39.

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