Printing apparatus, method and system for previewing printing

A printing apparatus for previewing printing, comprising:

• an input/output module for receiving a printing job, the printing job comprising a printing data;
• a printing module for printing the printing data;
• a storage module for storing the printing data;
• a parser module for determining whether the printing job comprises a preview printing command,
• wherein when the printing job is determined to comprise the preview printing command, the printing apparatus stores the printing data, after the printing module prints the printing data, the printing apparatus determines whether to continue executing the printing job, and when it is determined to continue executing the printing job, the printing apparatus continues to print the printing data;
• and
• an identification module for identifying a user based on identification information,
• wherein when the printing job is determined to comprise the preview printing command, the printing apparatus establishes a work index value according to the user and stores the work index value into a work index table in the storage module, the work index value is capable of indexing the printing data, and when the printing data is printed by the printing module and the printing job is determined to comprise the preview printing command, the identification module identifies the user, the printing apparatus selects the work index value from the work index table according to the user, and reads the printing data based on the work index value.

A system for previewing printing, comprising:

• a computer device, a driver being installed in the computer device and issuing a preview printing command, the computer device transmitting a printing job, the printing job comprising a printing data and the preview printing command;
• a printing apparatus comprising:
• an input/output module for receiving the printing job;
• a printing module for printing the printing data;
• a storage module for storing the printing data;
• and
• a parser module for determining whether the printing job comprises the preview printing command,
• wherein when the printing job is determined to comprise the preview printing command, the printing apparatus stores the printing data, after the printing module prints the printing data, the printing apparatus determines whether to continue executing the printing job, and when it is determined to continue executing the printing job, the printing apparatus continues to print the printing data;
• and
• an identification module for identifying a user based on identification information,
• wherein when the printing job comprises the preview printing command, the printing apparatus establishes a work index value according to the user and stores the work index value into a work index table in the storage module, the work index value is capable of indexing the printing data, and when the printing data is printed by the printing module and the printing job is determined to comprise the preview printing command, the identification module identifies the user, the printing apparatus selects the work index value from the work index table according to the user, and reads the printing data based on the work index value.