Apparatus to adjust the head gap in ink-jet printers

Details Apparatus to adjust the head gap in ink-jet printers Apparatus to adjust the head gap in ink-jet printers

2005-05-03

2005-05-03

Meier, Stephen D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C400S055000, C400S056000, C400S057000, C400S058000, C400S059000, C400S060000

Reexamination Certificate

active

06886897

ABSTRACT:
A head gap adjusting apparatus used with an ink-jet printer, in which there are provided a pair of carrier shaft lifting parts disposed upon a chassis to adjust the head gap between a paper and a print head by converting a force of horizontal motion to a force of vertical motion and transmit the converted force to a carrier shaft. Each of the carrier shaft lifting parts includes the following elements. A vertical opening is formed in the chassis to guide the end of the carrier shaft to be movable up and down. An elastic supporting member elastically supporting the carrier shaft within the vertical opening to prevent the carrier shaft from being freely moved during movements of the carrier for carrying out a printing. A horizontal moving device is for enabling an end of the carrier shaft to move up and down within the vertical opening against the elastic forces of the elastic supporting member during the horizontal movements thereof. Accordingly, there are provided the carrier shaft lifting parts converting the force of horizontal motion to the force of vertical motion. Therefore, the head gap can be simply and precisely adjusted in accordance with the variations of the thickness of the paper to be printed.

REFERENCES:
patent: 4738552 (1988-04-01), Kikuchi et al.
patent: 5131765 (1992-07-01), Bradley et al.

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