A printing device component comprising: a memory device comprising: compressed coefficients that, when decompressed by a printing device, form difference entries, wherein a difference entry of the difference entries represents a difference of a value of a corresponding entry of a halftone table and a value of a corresponding entry of a reference table, wherein the entry of the halftone table contains a PWM value that represents the PMW control to be applied to the corresponding pixel; and wherein a row in the halftone table indicates a pixel portion with respect to which power indicated by the PWM value is applied; a minimum pulse width modulation value for a pixel, and a maximum PWM value for a pixel; a healing parameter specifying a healing process to apply to a reconstructed halftone table produced using the coefficients, and the healing parameter to specify use of one or both of the minimum PWM value and the maximum PWM value by the healing process, wherein the coefficients, the healing parameter, and one or both of the minimum PWM value and the maximum PWM value are accessible by a printing device to reconstruct a halftone table used in halftone printing by the printing device using a print material. a memory device comprising: compressed coefficients that, when decompressed by a printing device, form difference entries, wherein a difference entry of the difference entries represents a difference of a value of a corresponding entry of a halftone table and a value of a corresponding entry of a reference table, wherein the entry of the halftone table contains a PWM value that represents the PMW control to be applied to the corresponding pixel; and wherein a row in the halftone table indicates a pixel portion with respect to which power indicated by the PWM value is applied; a minimum pulse width modulation value for a pixel, and a maximum PWM value for a pixel; a healing parameter specifying a healing process to apply to a reconstructed halftone table produced using the coefficients, and the healing parameter to specify use of one or both of the minimum PWM value and the maximum PWM value by the healing process, compressed coefficients that, when decompressed by a printing device, form difference entries, wherein a difference entry of the difference entries represents a difference of a value of a corresponding entry of a halftone table and a value of a corresponding entry of a reference table, wherein the entry of the halftone table contains a PWM value that represents the PMW control to be applied to the corresponding pixel; and wherein a row in the halftone table indicates a pixel portion with respect to which power indicated by the PWM value is applied; a minimum pulse width modulation value for a pixel, and a maximum PWM value for a pixel; a healing parameter specifying a healing process to apply to a reconstructed halftone table produced using the coefficients, and the healing parameter to specify use of one or both of the minimum PWM value and the maximum PWM value by the healing process, wherein the coefficients, the healing parameter, and one or both of the minimum PWM value and the maximum PWM value are accessible by a printing device to reconstruct a halftone table used in halftone printing by the printing device using a print material.