Granted Patent B2

US 8,422,096 · App. 12/329,697 · Granted Apr 16, 2013

Abstract

Claims (42)

1. A method for dissipating heat produced in a scan head assembly of an imaging apparatus during scanning of media sheets, comprising:

determining a media sheet scan count;

moving the scan head assembly between a first position of the scan head assembly and a second position of the scan head assembly for dissipating heat when the media sheet scan count is greater than a threshold count;

comparing a time spent in moving the scan head assembly between the first and second positions to a threshold time; and

repeating the moving of the scan head assembly between the first and second positions as long as the time spent is less than the threshold time.

2. The method of claim 1 , further comprising returning the scan head assembly for the scanning of media sheets to the first position when a total time spent in the movement of the scan head assembly between the first position and the second position is equal to or greater than the threshold time.

3. The method of claim 1 , wherein the moving the scan head assembly includes moving the scan head assembly one or more times in a reciprocating manner between the first and second positions.

4. The method of claim 1 , wherein the moving the scan head assembly includes:

moving the scan head assembly from the first position to the second position;

moving the scan head assembly from the second position to an intermediate position between the first and second positions;

moving the scan head assembly from the intermediate position to the second position; and

moving the scan head assembly from the second position to the first position.

5. A method for dissipating heat produced in a scan head assembly of an imaging apparatus during scanning of media sheets, comprising:

determining a media sheet scan count;

performing at least one heat dissipation cycle when the media sheet scan count is greater than a threshold count, wherein performing a heat dissipation cycle comprises:

moving the scan head assembly from a first position of the scan head assembly to a second position of the scan head assembly,

moving the scan head assembly from the second position of the scan head assembly to an intermediate position of the scan head assembly between the first position and the second position of the scan head assembly,

moving the scan head assembly from the intermediate position of the scan head assembly to the second position of the scan head assembly, and

moving the scan head assembly from the second position of the scan head assembly to the first position of the scan head assembly;

comparing a time spent between a start time and a completion time of the at least one heat dissipation cycle to a threshold time; and

performing a subsequent heat dissipation cycle to the at least one heat dissipation cycle when the time spent is less than the threshold time.

6. A non-transitory computer readable storage medium containing instructions for dissipating heat produced in a scan head assembly of an imaging apparatus during scanning of media sheets by:

determining a media sheet scan count;

moving the scan head assembly between a first position of the scan head assembly and a second position of the scan head assembly for dissipating heat when the media sheet scan count is greater than a threshold count;

comparing a time spent in moving the scan head assembly between the first and second positions to a threshold time; and

repeating the moving of the scan head assembly between the first and second positions as long as the time spent is less than the threshold time.

7. The computer readable storage medium of claim 6 , further comprising instructions for returning the scan head assembly for the scanning of media sheets to the first position when a total time spent in the movement of the scan head assembly between the first position and the second position is equal to or greater than the threshold time.

8. The computer readable storage medium of claim 6 , wherein the moving the scan head assembly between the first and second positions includes moving the scan head assembly one or more times in a reciprocating manner between the first and second positions.

9. The computer readable storage medium of claim 6 , wherein the moving the scan head assembly includes:

moving the scan head assembly from the first position to the second position;

moving the scan head assembly from the second position to an intermediate position between the first and second positions;

moving the scan head assembly from the intermediate position to the second position; and

moving the scan head assembly from the second position to the first position.

10. A non-transitory computer readable storage medium containing instructions for dissipating heat produced in a scan head assembly of an imaging apparatus during scanning of media sheets in the imaging apparatus by:

determining a media sheet scan count;

performing at least one heat dissipation cycle when the media sheet scan count is greater than a threshold count, wherein performing a heat dissipation cycle comprises:

moving the scan head assembly from a first position of the scan head assembly to a second position of the scan head assembly,

moving the scan head assembly from the second position of the scan head assembly to an intermediate position of the scan head assembly between the first position and the second position of the scan head assembly,

moving the scan head assembly from the intermediate position of the scan head assembly to the second position of the scan head assembly, and

moving the scan head assembly from the second position of the scan head assembly to the first position of the scan head assembly;

comparing a time spent between a start time and a completion time of the at least one heat dissipation cycle to a threshold time; and

performing a subsequent heat dissipation cycle to the at least one heat dissipation cycle when the time spent is less than the threshold time.

Assignments (7)