Ink jet printer having temperature sensor for periodic contact w

Details Ink jet printer having temperature sensor for periodic contact w Ink jet printer having temperature sensor for periodic contact w

1994-11-25

1997-11-11

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Controller

347 22, 347 32, B41S 2938

Patent

active

056869436

ABSTRACT:
An ink jet printer has a temperature sensor as a permanent part thereof to measure the temperature of printheads which are an integral part of a replaceable printhead cartridge assembly. The temperature sensor is a part of the maintenance station and senses the temperature of the printheads each time the printhead enters the maintenance station. In the preferred embodiment, the temperature sensor is spring-loaded and is located at a printhead spitting location between fixed wiper blades and the capping location in the maintenance station, so that temperature is sensed each time the printhead enters and leaves the maintenance station to eject nozzle cleaning droplets onto a collection surface at the spitting location to clean the printhead nozzle face by the wiper blades, or to cap the printhead nozzles. To facilitate good thermal contact, a recess is provided in the heat sink upon which the printhead resides for entry by the spring-loaded temperature sensor.

REFERENCES:
patent: Re32572 (1988-01-01), Hawkins et al.
patent: 4571599 (1986-02-01), Rezanka
patent: 4899180 (1990-02-01), Elhatem et al.
patent: 4980702 (1990-12-01), Kneezel et al.
patent: 5107276 (1992-04-01), Kneezel et al.
patent: 5223853 (1993-06-01), Wysocki et al.
patent: 5257044 (1993-10-01), Carlotta et al.

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