Abstract: A method for updating a printing parameter of a printer includes a plurality of nozzles of a row of an inkjet print head of a printer simultaneously printing ink onto a print medium while the inkjet print head is moving along a first horizontal direction or a second horizontal direction opposite to the first horizontal direction; moving the printing medium along a vertical direction less than a center distance between two adjacent nozzles; updating the printing parameter of the printer according to a printing result of the print medium. The method can be adjusted to match resolution of an image having a higher resolution than the inkjet print head, also the method can perform printing adjustment even when the inkjet print head is out of alignment, in this way a more accurate printing parameter can be obtained.

Abstract: A method for searching for an optimal temperature of an ink jet chip of a printhead before printing includes controlling the printhead to print a swath of data according to a predetermined swath density, measuring the temperature of the ink jet chip after printing of the swath of data, and comparing the measured temperature with a target temperature.

Abstract: A method for updating a printing parameter of a printer includes a plurality of nozzles of a row of an inkjet print head of a printer simultaneously printing ink onto a print medium while the inkjet print head is moving along a first horizontal direction or a second horizontal direction opposite to the first horizontal direction; moving the printing medium along a vertical direction less than a center distance between two adjacent nozzles; updating the printing parameter of the printer according to a printing result of the print medium. The method can be adjusted to match resolution of an image having a higher resolution than the inkjet print head, also the method can perform printing adjustment even when the inkjet print head is out of alignment, in this way a more accurate printing parameter can be obtained.

Abstract: A method for searching for an optimal temperature of an ink jet chip of a printhead before printing includes controlling the printhead to print a swath of data according to a predetermined swath density, measuring the temperature of the ink jet chip after printing of the swath of data, and comparing the measured temperature with a target temperature.

Abstract: A method for optimizing ink jetted from nozzles of a printhead of an ink jet printer. Before printing a swath, the nozzles of the printhead jet a predetermined number of ink drops towards an absorption substance at the maintenance station of the printer. The predetermined number corresponds to a swath density of the swath to be printed to preheat a chip of the printhead to an optimal temperature before printing.

Abstract: Media transmission device. The media transmission device is appropriate for an image output apparatus. The media transmission device has a media transmission unit, a temperature detector, and a controller. The temperature detector detects an ambient temperature before the media transmission unit transmits media and, according to the ambient temperature, outputs a temperature signal. The controller receives the temperature signal to control the transmission speed of the media transmission unit.

Abstract: An inkjet printer includes different types of cartridges and different thermal sensing elements are set on different types of cartridges. The inkjet printer utilizes a detecting circuit to generate a sensing signal according to a working temperature of a printhead sensed by the thermal sensing element. Therefore, according to the sensing signal, the inkjet printer can determine the working temperature of the printhead. Furthermore, a control circuit of the inkjet printer can also identify different types of cartridges, as values of the sensing signal generated by different thermal sensing elements fall into different ranges.