Recorders – Light or beam recording – Including record receiver or handling means therefor
Patent
1990-01-05
1991-05-07
Reynolds, Bruce A.
Recorders
Light or beam recording
Including record receiver or handling means therefor
357 17, 313500, 362800, G01D 1514, B41J 245
Patent
active
050140744
ABSTRACT:
This technique for assembling a print head for an LED printer has LED dice first assembled into precisely known locations on mounting tiles. A portion of the front face of each tile is left exposed beyond anything mounted on the tile. The tiles are then assembled with these exposed areas on a planar reference on an assembly fixture. Reference surfaces built into the fixture align the edges of the tiles, and hence the LED dice. Finally a mother plate is adhesively bonded onto the backs of the tiles. The adhesive accommodates thickness variations in the mounting tiles, and lack of flatness in the back surfaces of the tiles and the front face of the mother plate. Reference tiles coplanar with the reference plane formed by the front faces of the mounting tiles provide a z axis reference.
REFERENCES:
patent: 3952311 (1976-04-01), LaPeyre
patent: 4536778 (1985-08-01), De Schamphelaere
patent: 4566170 (1986-01-01), Dolan
patent: 4605944 (1986-08-01), Ishii
patent: 4633280 (1986-12-01), Takasu
patent: 4653895 (1987-03-01), Deguchi
Dody Joseph W.
Klinke Richard J.
Lowery Christopher A.
Sasser Gary D.
Sullivan William P.
Hewlett--Packard Company
Reynolds Bruce A.
Rogers Scott A.
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