Image forming apparatus and non-transitory recording medium having recorded therein temperature control program for use in image forming apparatus

摘要

An image forming apparatus forms a toner image of text on a recording sheet based on PDL data prescribing text data and one or more print conditions of thereof, and thermally fixes the toner image, and includes: condition acquisition unit analyzing the PDL data to acquire, as the conditions, one or more of character number, character spacing, and line spacing from the PDL data; judgment unit judging for each condition, by comparing the condition with reference value, the judgment indicating whether the condition is suitable for ensuring fixability of the toner image if thermally fixed at a temperature that is lower than predetermined temperature; and temperature control unit, when the judgment unit judges negatively for at least one condition, setting a fixing temperature for thermally fixing the toner image to the predetermined temperature, when the judgment unit judges affirmatively for all conditions, setting the fixing temperature to the lower temperature.

主权项

1. An image forming apparatus that converts page description language (PDL) data into image data for printing to form a toner image of text on a recording sheet, and thermally fixes the toner image, the PDL data prescribing text data and one or more print conditions of the text data, the image forming apparatus comprising:
a condition acquisition unit that analyzes the PDL data to acquire, as the print conditions, one or more of a character number, a character spacing, and a line spacing from the PDL data; a judgment unit that, before conversion of the PDL data into the image data for printing, makes a judgment for each of the acquired print conditions, by comparing the acquired print condition with a reference value corresponding to the acquired print condition, the judgment indicating whether the acquired print condition is suitable for ensuring fixability of the toner image if the toner image is thermally fixed at a temperature that is lower than a predetermined temperature; and a temperature control unit that, when the judgment unit judges negatively with respect to at least one of the acquired print conditions, sets a fixing temperature at which the toner image is to be thermally fixed to the predetermined temperature, and when the judgment unit judges affirmatively with respect to all of the acquired print conditions, sets the fixing temperature to the temperature that is lower than the predetermined temperature.