| 摘要 |
In a printing system, before transmitting print data to a printer, a personal computer transmits a virtual printing start command to the printer. When the data received by the printer is a virtual printing start command, the printer performs a virtual printing operation until the printer receives a virtual printing end command from the personal computer. At the virtual printing operation, procedures are similar to those of an actual printing operation. However, at the virtual printing operation, sheets are not conveyed nor is a developing agent, such as ink and toner, adhered to the sheets by a printing unit. For example, the received print data is developed into a memory as an image data. When an error occurs during the virtual printing operation, the printer provides error information to the personal computer. Then, the personal computer displays the error information via a dialog box to a user.
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