Abstract: An example device may include a controller comprising a processor and a memory storing instructions executable by the processor, wherein the processor is to execute the instructions to cause an image forming device to print an image onto a target sheet of media routed through a media path from an input media tray; receive an input corresponding to the image printed onto the target sheet of media; determine, based on the input, a degree of rotation of the image; and calibrate a rotation parameter of the image forming device in response to the degree of rotation determined from the input.

Abstract: An example device may include a controller comprising a processor and a memory storing instructions executable by the processor, wherein the processor is to execute the instructions to cause an image forming device to print an image onto a target sheet of media routed through a media path from an input media tray; receive an input corresponding to the image printed onto the target sheet of media; determine, based on the input, a degree of rotation of the image; and calibrate a rotation parameter of the image forming device in response to the degree of rotation determined from the input.

Abstract: An example device includes a page sensor to detect a page of a print medium picked from a source tray of a printer. The device further includes a processor connected to the page sensor. The processor is to determine a delay in detection by the page sensor of the page conveyed by a page feed mechanism. In response to determination of the delay, the processor is to control the page feed mechanism to continue to convey the page through the printer and the processor is further to trigger the printer to reprint data intended for the page to a subsequently picked page of print medium.

Abstract: An example device includes a page sensor to detect a page of a print medium picked from a source tray of a printer. The device further includes a processor connected to the page sensor. The processor is to determine a delay in detection by the page sensor of the page conveyed by a page feed mechanism. In response to determination of the delay, the processor is to control the page feed mechanism to continue to convey the page through the printer and the processor is further to trigger the printer to reprint data intended for the page to a subsequently picked page of print medium.

Abstract: This disclosure relates to instructing deposition of a service patch for different toners, and determining the respective different toner amounts as a function of toner coverages on at least one previous media unit.

Abstract: This disclosure relates to instructing deposition of a service patch for different toners, and determining the respective different toner amounts as a function of toner coverages on at least one previous media unit.