Stylus C40UX/C40SX/C20UX/C20SX | Revision A |
2.1.2.1 Printing Process
This section explains the process in which the printheads of
1.Normal State:
When no printing signal is sent from PC, or no PZT drive voltage is applied, PZT does not change shape, therefore PZT does not squeeze the cavity. Ink pressure inside the cavity is kept normal. (Refer to Figure
2)Ejecting State:
When the print signal is output from the C413MAIN/B board, IC (Nozzle Selector) located on the printhead unit latches data once by
Ink Path | PZT | Ink Cavity | |||||
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Nozzle | Nozzle plate |
PZT drive voltage
2.1.2.2 Printing Method
For print dot system, Stylus C40UX/C40SX/C20UX/C20SX has the following two kinds of printing modes.
Multiple shot printing
Variable dot printing
The above two printing modes are automatically selected depending on the media and the resolution setting of the printer driver. The following explains each printing mode.
Multiple shot printing
This printing mode is developed to improve the print quality on plain paper or transparencies in low resolution. The multiple shot printing mode uses normal dot and the number of dot shots varies from 1 shot to maximum 4 shots depending on the print data to enable sharp image output even in a low resolution.
Variable dot printing
This printing mode is developed to improve the print quality on exclusive paper. This mode is basically the same as variable dot printing mode used on other products /; micro dot, middle dot, and large dot compose this mode. Print dot size varies according to print data and this mode enables even sharper image output on exclusive paper.
Figure 2-3. Printhead printing process
Operating Principles | Overview | 27 |
