Infocus Corporation

Xerox Corporation

Pamela R Deshon-Stepp

Brian G Russell

James Matthew Cunnington

Ken Edlow

A method and apparatus are provided for cleaning a first set and a second set of a staggered full-width array printhead assembly (SFWA) in an inkjet printer. The apparatus for the method includes (a) a wiper blade carriage assembly (WBCA) having a wiper blade unit at a first set point; (b) a timing belt and a stepper motor assembly for moving the WBCA between a home position and a number of operating positions; (c) devices for moving the first and second sets of printheads between resting positions and a wiping positions; (d) computer programs for controlling movements (i) of the WBCA from the home position into wiping contact with, and past, the first and second sets of printheads in first and second wiping positions respectively, (ii) of the first and second sets of printheads out of the wiping positions, and (iii) of the WBCA from the wiping positions back to the home position; and (e) apparatus for horizontally moving and re-aligning the wiper blade unit on the WBCA at a second set point for wiping the second set of printheads.

Cleaning method and apparatus for a printhead assembly

In a projection device including a casing having an inlet vent and an outlet vent, and a plurality of components including a light source disposed within the casing, a blower system is provided, wherein the blower system includes a plurality of blower portions operable to draw air into the casing through an inlet vent, circulate air among the plurality of components, and eject circulated air from the casing through an outlet vent; and a blower motor configured to operate the plurality of blower portions.

Blower system

In one example, a method for controlling temperature in a projection device, comprises measuring a plurality of temperatures in the projection device; averaging said plurality of temperatures to determine an averaged temperature; determining an error between a set-point temperature and said averaged temperature; and automatically adjusting a blower in said projection device based on said determined error. In another example, a method for controlling temperature in a projection device having a lamp and a blower comprises measuring temperature in the projection device; and selectively adjusting both a first signal to the blower and a second signal to the lamp based on said measured temperature to control temperature in the device.

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Canby, OR, United States of America

Pamela R Deshon-Stepp