Patent ID: 6994412

Claim:
A printing device having a plurality of print heads for the image-wise formation of dots of a marking substance on an image-receiving member, comprising: a heat exchange device for bringing the temperature of each of said plurality of print heads to a predetermined set-point temperature value, and an adjustment device for adjusting the temperature of one or more of said plurality of print heads from its predetermined set-point temperature value to an associated target set-point temperature value, wherein each of said associated target set-point temperature values is determined in relation to a target value of an output parameter of said print heads, said target value of said output parameter being determined on the basis of the respective values of said output parameter for the respective print heads, said respective values being obtained by operating each of said respective print heads at said predetermined set-point temperature value to render a predetermined test pattern, where said target value of said output parameter is determined such that for each of the print heads the absolute value of the difference between the associated target set-point temperature value and the predetermined set-point temperature value with which the temperature of each print head is to be adjusted is 15% or less of said predetermined set-point temperature value.