PRINTER ASSEMBLY HAVING LIFTABLE CARRIAGE AND EXTERNAL DATUM ARRANGEMENT

摘要

A printer assembly includes: a housing having referencing slots defined in opposite sidewalls; a stop positioned towards a lower end of each referencing slot; a print bar carriage slidably received within the housing; and a lift mechanism for lifting the print bar carriage relative to the housing. The print bar carriage includes: a chassis; a printhead supported by the chassis; and a pair of lugs, each lug being slidably received in a respective referencing slot of the housing. Each stop has a datum surface which defines a printing position of the print bar carriage, the print bar carriage being in the printing position when each lug is in abutting engagement with a respective datum surface.

主权项

1. A printer assembly comprising:
a housing comprising a pair of opposite sidewalls, each sidewall defining a respective referencing slot; a pair of first stops, each first stop being positioned towards a lower end of a respective referencing slot, each first stop having a first datum surface; a print bar carriage slidably received within the housing, the print bar carriage comprising:
a chassis;a printhead supported by the chassis; anda pair of lugs, each lug extending outwardly from opposite sides of the chassis, each lug being received in a respective referencing slot of the housing, and each lug being slidably movable within its respective referencing slot; and a lift mechanism for lifting the print bar carriage relative to the housing,wherein the first datum surfaces define a printing position of the print bar carriage, the print bar carriage being in the printing position when each lug is in abutting engagement with its respective first datum surface.