Wiper for inkjet printhead nozzle member

Details Wiper for inkjet printhead nozzle member Wiper for inkjet printhead nozzle member

1993-06-24

1996-03-19

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 2165

Patent

active

055006604

ABSTRACT:
A wiper according to the invention comprises two or more wiper blades arranged one behind the other in close proximity, where the two or more wiper blades are different from one another so as to have slightly different wiping swaths. The resulting wipers greatly increase the allowable alignment tolerance between the wiper and the nozzle member of a printhead, especially if the printhead is of the kind having raised adhesive beads dispensed near the ends of the nozzle member. In one embodiment, two different size wiper blades, arranged one behind the other, have slits formed near the ends of the wiper blades. The slits mechanically decouple those end portions of the wiper blades which ride over the adhesive beads from the remaining portions of the wiper blades to keep the remaining portions of the blades in contact with the nozzle member.

REFERENCES:
patent: 4364065 (1982-12-01), Yamamori et al.
patent: 4853717 (1989-08-01), Harmon et al.
patent: 5097276 (1992-03-01), Midorikawa
patent: 5103244 (1992-04-01), Gast et al.
patent: 5115250 (1992-05-01), Harmon et al.
patent: 5278584 (1994-01-01), Keefe et al.

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