Printing device having an output level compensation function
AssigneeCanon Kabushiki Kaisha
InventorsAkitoshi Yamada, Hiromitsu Hirabayashi
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Abstract
A printing device having multiple printheads includes an acquisition device to obtain temperatures of the multiple printheads, a determination device which determines, based on the obtained temperature of one printhead, a target temperature corresponding to each other of the multiple printheads in order to maintain a predetermined output level relationship between an output level of the one printhead and an output level of each other of the multiple printheads, and an adjustment device to adjust the temperature of each other of the multiple printheads to the corresponding target temperature.
Claims36
A method for controlling output levels of an image printing device having multiple printheads comprising the steps of:
- obtaining a temperature of each of the multiple printheads;
- determining, based on the obtained temperature of one of the multiple printheads, target temperatures for each other of the multiple printheads in order to maintain a predetermined relationship between an output level of the one of the multiple printheads and an output level of each other of the multiple printheads;
- adjusting the temperature of each other of the multiple printheads using its determined target temperature;
- and
- printing an image using the multiple printheads.
A printing device having multiple printheads, comprising:
- an acquisition device to obtain a temperature of each of the multiple printheads;
- a determination device which determines, based on the obtained temperature of one of the multiple printheads, target temperatures for each other of the multiple printheads in order to maintain a predetermined output level relationship between an output level of the one printhead and an output level of each other of the multiple printheads;
- and
- an adjustment device to adjust the temperature of each other of the multiple printheads using its target temperature.
A printer driver installed in a host computer, the printer driver comprising:
- computer-executable acquisition code to acquire temperatures of multiple printheads installed in a printer;
- and
- computer-executable determination code to determine, based on the acquired temperature of one of the multiple printheads, target temperatures for each other of the multiple printheads in order to maintain a predetermined output level relationship between an output level of the one printhead and an output level of each other of the multiple printheads.
Dependencies are inferred from the claim text.