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US 8,711,403 B2Granted
Printer driver, printer control method, and recording medium
AssigneeSeiko Epson Corporation
InventorMichiaki Watanabe
Life of this patent
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AssigneeSeiko Epson Corporation
InventorMichiaki Watanabe
Estimating the term…
A printer driver, printer control method, and printer control program can prevent a printer from operating in unintended ways even when an old version of an application that is not multi-application capable is executed through a new version of a dedicated driver that is multi-application capable. A printer driver 20 has a dedicated driver 22 that can switch operation between a plurality of dedicated applications 27 and 28 by means of occupy requests and release requests. The occupy requests and release requests are requests that are received from the dedicated applications 27 and 28 to occupy or release a POS printer 30. When a request to start using the POS printer 30 is received from the dedicated application 27 the dedicated driver 22 tells the communication module 25 that the POS printer 30 is occupied by the dedicated application 27 and sets the POS printer 30 to an occupied status.
A control method for a printer that can operate the printer and, when there is a plurality of applications, can change the application setting the printer to an occupied state based on an occupy request or a release request received from one of the plurality of applications, the occupy request being a request to occupy the printer and the release request being a request to release the printer from being occupied, the control method comprising a step of:
A non-transitory recording medium recording a control program for a printer that can operate the printer and, when there is a plurality of applications, can change the application setting the printer to an occupied state based on an occupy request or a release request received from one of the plurality of applications, the occupy request being a request to occupy the printer and the release request being a request to release the printer from being occupied, the control program comprising:
Dependencies are inferred from the claim text.