PRINTER DRIVER CACHING METHOD
A method wherein image data is generated for a logical first page of a print job and for a logical second page of the print job. These are stored for later access. The position of a receiver media in a printer is determined with respect to one of two printheads. A print job is started in duplex format using either printhead, including printing the logical second page of the print job before printing the logical first page of the print job, as necessary.
1 . A printing method comprising:
generating print image data for a first logical page of a duplex print job;
determining a position of a receiver media in a printer with respect to one of two printheads in the printer;
determining that a second logical page of the print job is to be printed next in the printer before printing the first logical page of the print job based on the step of determining the position of the receiver media;
temporarily storing the first logical page of the print job including generating print image data for the second logical page of the print job; and
printing the second logical page of the print job including printing the first logical page of the print job after the step of printing the second logical page.
2 . The method of claim 1 wherein said step of determining the position of the receiver media comprises determining which one of said two printheads is capable of printing on the receiver media without retracting the receiver media.
3 . The method of claim 1 wherein the print job comprises a plurality of even and odd numbered pages, and wherein the method further comprises printing each of a plurality of pairs of the even numbered pages consecutively during the duplex print job and printing each of a plurality of pairs of the odd numbered pages consecutively during the duplex print job.
4 . The method of claim 3 , further comprising printing the even numbered pages of the print job on said one of the two printheads and printing the odd numbered pages of the print job on another one of the two printheads.
5 . The method of claim 1 , wherein the step of determining the position of the receiver media comprises querying the printer.
6 . The method of claim 1 , wherein the step of temporarily storing comprises storing the first logical page of the print job on a hard disk of a computer system connected to the printer.
7 . The method of claim 1 , wherein the step of printing comprises printing the second logical page of the print job on a first side of a media sheet and printing the first logical page of the print job on a second side of the media sheet.
8 . The method of claim 1 , wherein the step of printing comprises printing the second logical page of the print job on a first side of a media sheet using one of the two printheads and printing the first logical page of the print job on an second side of the media sheet using another one of the two printheads.
9 . A printing method comprising:
generating image data for a logical first page of a print job and for a logical second page of the print job;
storing the image data for the logical first page of the print job and for the logical second page of the print job;
determining a position of a receiver media in a printer with respect to one of two printheads in the printer; and
starting the print job in duplex format using either one of said two printheads based on the step of determining, including printing the logical second page of the print job before printing the logical first page of the print job, wherein the image data for the logical first page and the image data for the logical second page are each accessible for printing first on the printer.
10 . The method of claim 9 wherein said step of determining the position of the receiver media comprises determining which one of said two printheads is capable of printing on the receiver media without retracting the receiver media.
11 . The method of claim 9 wherein the print job comprises a plurality of even and odd numbered pages, and wherein the method further comprises printing each of a plurality of pairs of the even numbered pages consecutively during the duplex print job and printing each of a plurality of pairs of the odd numbered pages consecutively during the duplex print job.
12 . The method of claim 11 , further comprising using only one of the two printheads for printing the plurality of even numbered pages including using only the other one of the two printheads for printing the plurality of odd numbered pages.
13 . The method of claim 9 , wherein the step of determining the position of the receiver media comprises querying the printer.
14 . The method of claim 9 , wherein the step of storing comprises storing the image data for the logical first page of the print job and for the logical second page of the print job on a computer system connected to the printer.
15 . The method of claim 9 , wherein the step of starting the print job comprises printing the logical second page of the print job on a first side of the receiver media before printing the logical first page of the print job on a second side of the receiver media, and wherein each logical side is printed by a different one of the two printheads.
16 . A printing method comprising:
generating image data for a logical first page of a print job;
storing the image data for the logical first page of the print job;
determining a position of a receiver media in a printer with respect to one of two printheads in the printer;
determining that a logical second page of the print job is required for starting the print job in response to the step of determining the position of the receiver media in the printer;
generating image data for the logical second page of a print job in response to the step of determining that the logical second page of the print job is required;
starting the print job including printing the logical second page of the print job on a first side of a print media; and
accessing the stored image data for the logical first page of the print job and printing the logical first page of the print job on a second side of the print media.
17 . The method of claim 16 , further comprising alternating between printing a pair of logically numbered even pages and printing a pair of the logically numbered odd pages in the print job.
18 . The method of claim 16 , wherein the step of generating image data for the logical second page of the print job comprises storing the image data for the logical second page of the print job on a storage device, and wherein the image data for the logical first page of the print job is stored on the storage device.
19 . The method of claim 16 , wherein the printer is a bidirectional printer, and wherein the step of determining the position of the receiver media comprises querying the printer and receiving a response thereto.
20 . A program storage device readable by a computer, tangibly embodying a non-transitory program of instructions executable by the computer to perform the method steps of claim 1 .