Laser printhead raster path configuration for modifying a rewriteable label

1. A method, comprising:

receiving, by a device, a label modification input associated with an image;

processing, by the device and using an image filtering, the label modification input to convert the image to a bitmap for raster printing the image via a laser printhead;

determining, by the device and based on the bitmap, an array of power factors for a light beam that is configured to be emitted by a laser of the laser printhead and raster print the image, wherein determining the array of power factors includes, for a power level of the array of power factors:

(i) determining, based on a first bit of the bitmap, a first desired temperature profile of a rewriteable label to depict a first pixel of the image;

(ii) determining, based on a second bit of the bitmap, a second desired temperature profile of the rewriteable label to depict a second pixel of the image; and

(iii) assigning the power level based on a difference between the first desired temperature profile and the second desired temperature profile; and

controlling, by the device, the laser of the laser printhead in association with raster printing the image on the rewriteable label according to the array of power factors.

2. The method of claim 1 , wherein the first bit and the second bit are adjacent.

3. The method of claim 1 , further comprising:

determining a quantity of bits between the first bit and the second bit along a raster print path of the laser printhead; and

assigning the power level based on the quantity of bits.

4. The method of claim 1 , wherein the array of power factors is a non-binary bitmap that corresponds to the bitmap.

5. The method of claim 1 , wherein dimensions of the array of power factors are the same as dimensions of a pixel array of the image when depicted on the label.

6. The method of claim 1 , wherein controlling the laser according to the array of power factors comprises:

causing the laser to emit the light beam to write pixels or erase pixels of the rewriteable label to depict the image.

7. A device, comprising:

a memory; and

a processor, communicatively coupled to the memory, configured to:

receive an image;

convert the image to a bitmap for raster printing the image via a laser printhead;

determine, based on the bitmap, an array of power factors for a light beam that is configured to be emitted by a laser of the laser printhead, wherein the processor is configured, to determine the array of power factors, to:

(i) determine, based on a first bit of the bitmap, a first desired temperature profile of a rewriteable label to depict a first pixel of the image;

(ii) determine, based on a second bit of the bitmap, a second desired temperature profile of the rewriteable label to depict a second pixel of the image; and

(iii) assign a power level of the array of power factors based on a difference between the first desired temperature profile and the second desired temperature profile; and

cause the laser printhead to emit the light beam to raster print the image on the rewriteable label according to the array of power factors.

8. The device of claim 7 , wherein the processor, when determining the array of power factors, is configured to:

determine individual power levels, of the array of power factors, based on a raster print path of the laser printhead.

9. The device of claim 8 , wherein the raster print path is based on a row and column configuration of the bitmap.

10. The device of claim 7 , wherein the processor, when the determining the array of power factors, is configured to:

determine individual power levels of the array of power factors for each of a plurality of distinct first bits.

11. The device of claim 7 , wherein the bitmap is a binary bitmap and the array of power factors is a non-binary bitmap.

12. The device of claim 7 , wherein dimensions of the bitmap and dimensions of the array of power factors are the same as dimensions of a pixel array of the image when depicted on the rewriteable label.

13. The device of claim 7 , wherein the processor, when causing the laser printhead to emit the light beam, is configured to:

control the laser printhead to emit the light beam to write pixels or erase pixels of the rewriteable label to depict the image; and

control the light beam to follow, using a reflector system of the laser printhead, a raster print path defined by the array of power factors.

14. A label modification unit comprising:

a laser configured to emit a light beam to modify a rewriteable label;

a reflector system to direct the light beam along a raster print path; and

a controller configured to:

receive a label modification input that includes an image;

process the label modification input to determine a bitmap for raster printing the image via the light beam;

determine, based on the bitmap, an array of power factors for the light beam that are configured to modify the rewriteable label with the image, wherein the controller is configured, to determine the array of power factors, to:

(i) determine, based on a first bit of the bitmap, a first desired temperature profile of the rewriteable label to depict a first pixel of the image;

(ii) determine, based on a second bit of the bitmap, a second desired temperature profile of the rewriteable label to depict a second pixel of the image; and

(iii) assign a power level of the array of power factors based on a difference between the first desired temperature profile and the second desired temperature profile; and

control, based on the array of power factors, the laser and the reflector system to raster print the image on the rewriteable label.

15. The label modification unit of claim 14 , wherein the controller, when processing the label modification input, is configured to:

convert the image to the bitmap according to a raster configuration of the reflector system.

16. The label modification unit of claim 14 , wherein the controller, when determining the array of power factors, is configured to:

determine a laser configuration associated with the laser, and

determine individual power levels of the array of power factors based on the laser configuration.

17. The label modification unit of claim 14 , wherein the array of power factors includes one or more of:

a power level of the laser,

a spot size of the light beam, or

a dwell time to modify a pixel of the label.

18. The label modification unit of claim 14 , further comprising:

an optic that is configured to be in a fixed position during raster printing.