Delaying processing based on received commands is suppressed while preventing executing parallel processes involving operation of hardware. Servers can send printing commands and non-printing commands to a printing device. When a printing command is received from a first server and a printing command is then received from another server different from the first server while a process based on the printing command received from the first server is executing, the printing device does not execute the process based on the printing command received from the other server; but if a non-printing command is received from another server, the printing device executes a process based on the non-printing command received from the other server parallel to the process based on the printing command received from the first server.

A job management server, which is connected to a Web application server and a job processing apparatus via a network, comprises: a registration unit which registers, when a job received from the Web application server is added with information indicating that a request source of the job is the job processing apparatus, the job in a first job queue, and to register, when the job is not added with the information, the job in a second job queue having a lower priority than the first job queue; and a transmission unit which transmits the job registered in the first job queue in response to a request from the job processing apparatus while a user utilizes a Web application via the job processing apparatus.

A printing control apparatus includes a processor configured to receive instruction information including print data and post-processing information indicating content of post-processing scheduled to be performed on paper on which an image based on the print data is printed, and, in a case where the post-processing included in the instruction information is not performed by a post-processing apparatus, generate an auxiliary image that assists a user to perform the post-processing, based on the post-processing information, and print the auxiliary image, together with the image based on the received print data, on the paper.

A printing apparatus includes: a transport unit that arranges and is able to transport a plurality of continuous paper pieces in parallel; a printing unit of which a print head reciprocates in a direction intersecting with a transport direction of the plurality of continuous paper pieces and which is configured to be able to perform printing on the plurality of continuous paper pieces separately; a reception unit that is able to receive a plurality of print jobs; and a control unit that controls operations of the transport unit and the printing unit based on the plurality of print jobs received by the reception unit.

A job management server, which is connected to a Web application server and a job processing apparatus via a network, comprises: a registration unit which registers, when a job received from the Web application server is added with information indicating that a request source of the job is the job processing apparatus, the job in a first job queue, and to register, when the job is not added with the information, the job in a second job queue having a lower priority than the first job queue; and a transmission unit which transmits the job registered in the first job queue in response to a request from the job processing apparatus while a user utilizes a Web application via the job processing apparatus.

Ink supplies and methods to prepare an ink supply are disclosed. An example ink supply for a printer includes an ink chamber within a housing of the ink supply. The housing is removably installable within the printer. The ink chamber is to store ink. The ink supply further includes a machine readable storage medium to store a first priming parameter. The machine readable storage medium is carried by the housing of the ink supply. The first priming parameter has a value to cause the printer to configure a first priming procedure of the printer. The first priming parameter has precedence in configuring the first priming procedure over a first corresponding priming parameter stored in a second machine readable storage medium of a second ink supply installed in the printer.

A method for checking intermediate, part or end products during the production process without using marks is disclosed. The print image of the intermediate, part or end product produced on a digital printing press is scanned at least after a predetermined production step in order to subsequently compare the scanned print image with stored product data. Based on the comparison, the check of the previous processing steps and/or the calculation of the subsequent control actions for the order allocated to the intermediate, part or end product and the control actions by the production device are carried out.

In one example of the disclosure, credit data indicative of a subscription credit is received at a printer via a first network. The printer is connected to a marking agent supply. The subscription credit is to authorize the printer to at least one of dispense or consume a credit quantity of marking agent from the supply according to a subscription. Job data is received at the printer via a second network.

A printing apparatus comprises a conveyance control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet as a printing sheet precedingly fed from the stacking unit and a leading edge of a succeeding sheet as a printing sheet succeedingly fed from the stacking unit overlap each other; and a skew correction unit which performs skew correction of the succeeding sheet while the succeeding sheet overlaps the preceding sheet by the conveyance control unit. The skew correction unit makes the leading edge of the succeeding sheet abut against the conveyance roller during a time from an end of a last line feed operation by the conveyance roller for printing on the preceding sheet by the printing unit to start of a next conveyance operation.

A printing apparatus comprises a conveyance control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet as a printing sheet precedingly fed from the stacking unit and a leading edge of a succeeding sheet as a printing sheet succeedingly fed from the stacking unit overlap each other; and a skew correction unit which performs skew correction of the succeeding sheet while the succeeding sheet overlaps the preceding sheet by the conveyance control unit. The skew correction unit makes the leading edge of the succeeding sheet abut against the conveyance roller during a time from an end of a last line feed operation by the conveyance roller for printing on the preceding sheet by the printing unit to start of a next conveyance operation.