Cooperating mechanical sub-assemblies for a drum-based wide form

Details Cooperating mechanical sub-assemblies for a drum-based wide form Cooperating mechanical sub-assemblies for a drum-based wide form

1996-09-10

1999-02-16

Hilten, John S.

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

Carriage-feed mechanism

400175, 347 50, 347 37, B41J 1900, B41J 2300

Patent

active

058712925

ABSTRACT:
This invention relates to an improved wide format color digital print engine, and in particular to a cooperating group of print engine sub-assemblies comprising a sealable enclosure defining electronics and printing sub-spaces within the enclosure and supporting two critical alignment plates which alone control alignment of all major sub-assemblies of the print engine and which provide accurate attachment points for a carriage drive and rail sub-assembly, a motor and drum mounted to rotate within a printing bay, and mounting points for a service station for cleaning and storing a plurality of marking elements associated with replaceable ink emitting cartridges. The subassemblies cooperate to generate high quality colored images as a drum-based large format digital ink jet print engine. In particular, the present invention provides a highly manufacturable print engine benefiting from a discrete few controlled mounting locations so that accurate mounting of the cooperating sub-assemblies allow a very stable carriage assembly for driving said carriage laterally with respect to a printing medium coupled to the exterior of a drum spinning within a printing bay and controlled by print head electronics utilizing a timing sequence from the rotating drum and lead screw for driving the carriage assembly.

REFERENCES:
patent: 4538160 (1985-08-01), Uchiyama
patent: 4613245 (1986-09-01), Ikeda et al.
patent: 4626117 (1986-12-01), Dumusc
patent: 5026186 (1991-06-01), Hasegawa et al.
patent: 5212502 (1993-05-01), Bowling
patent: 5237338 (1993-08-01), Stephenson
patent: 5486854 (1996-01-01), Uychida
patent: 5644347 (1997-07-01), Schwiebert et al.

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