Print operations comprising user specified printing tasks and cleaning operations
AssigneeHP Indigo B.V.
InventorsVitaly Portnoy, Michel Assenheimer, Yoav Nachmias
Life of this patent
Estimating the term…
Abstract
In an example, a method includes receiving, by at least one processor, an instruction to print a user specified printing task to at least one media sheet. Print operation instructions may be determined. Such print operation instructions may comprise instructions to control a print apparatus to print the user specified printing task and instructions to control a print apparatus to carry out at least one cleaning operation, wherein the cleaning operation comprises duplex printing a print media sheet.
Claims20
A method comprising:
- receiving, by at least one processor, an instruction to print a user specified printing task to at least one media sheet;
- and
- determining, by the processor, print operation instructions,
- the print operation instructions comprising instructions to control a print apparatus to print the user specified printing task and instructions to control a print apparatus to carry out at least one cleaning operation,
- wherein the cleaning operation comprises duplex printing a print media sheet that is a cleaner page to adhere and remove residue from a component of the print apparatus,
- the print operation instructions further comprising instructions to rearrange an order of print media sheet sides being printed in which multiple first sides of print media sheets are printed before second sides of those print media sheets with a constraint, imposed by a pairing function of the processer, that the cleaning operation has a sequence of print media sides of cleaner pages to be printed that is not interrupted with printing part of the user specified printing task.
Print apparatus comprising:
- a pattern receiving surface to receive a pattern of print agent according to print instructions, and to transfer the pattern of print agent to a print media sheet;
- processing circuitry, wherein the processing circuitry is to:
- receive an instruction to print a user specified printing task to at least one media sheet;
- control the print apparatus to carry out a print operation comprising the user specified print task;
- and
- schedule, within the print operation, a cleaning operation, wherein the cleaning operation comprises duplex printing at least one print media sheet, wherein the duplex printing comprises printing to a first region of a first side of the at least one print media sheet in the cleaning operation and printing to a second region of a second side of the at least one print media sheet in the cleaning operation, wherein the first region and the second region are of different non-zero sizes;
- an electrostatic imaging cylinder to receive print agent to form the pattern of print agent and to transfer the pattern to the pattern receiving surface;
- and
- a first print agent source and a second print agent source and in which the electrostatic imaging cylinder comprises a first semicylinder and a second semicylinder, wherein each semicylinder is to receive print agent from one of the first and second print agent source, and wherein the processing circuitry is to control the print operation such that, for the print operation, the first semicylinder receives print agent from the first print agent source and the second semicylinder receives print agent from the second print agent source.
A non-transitory machine readable media comprising instructions which, when executed by processing circuitry, cause the processing circuitry to determine a print scheduling for a received print job, the print scheduling comprising the received print job and a duplex media sheet cleaning print operation, the print scheduling including rearranging an order of print media sheet sides being printed in which multiple first sides of print media sheets are printed before second sides of those print media sheets with a constraint in the scheduling instructions that the sheet cleaning print operation has a sequence of print media sides of cleaner pages to be printed that is not interrupted with printing part of the received print job.
Print apparatus comprising:
- a pattern receiving surface to receive a pattern of print agent according to print instructions, and to transfer the pattern of print agent to a print media sheet;
- processing circuitry, wherein the processing circuitry is to:
- receive an instruction to print a user specified printing task to at least one media sheet;
- control the print apparatus to carry out a print operation comprising the user specified print task;
- and
- schedule, within the print operation, a cleaning operation, wherein the cleaning operation comprises duplex printing at least one print media sheet, wherein the duplex printing comprises printing to a first region of a first side of the at least one print media sheet in the cleaning operation and printing to a second region of a second side of the at least one print media sheet in the cleaning operation, wherein the first region and the second region are of different non-zero sizes;
- wherein the processing circuitry is to rearrange an order of print media sheet sides being printed in which multiple first sides of print media sheets are printed before second sides of those print media sheets, the processing circuitry programmed with an express constraint that the cleaning operation has a sequence of print media sides of cleaner pages to be printed that is not interrupted with printing part of the user specified printing task.
Dependencies are inferred from the claim text.