Abstract: An inkjet printer includes a print formatter circuit which receives high-level printing signals from a host computer, such as a PC or mainframe computer. The print formatter circuit translates the high-level printing signals into signals of an intermediate-level interface language, which is communicated to a printhead controller circuit. The printhead controller circuit in turn translates the intermediate-level interface language signals into discreet-event commands, and other finite action-element or condition-element signals or requirements, that are communicated to the inkjet printer and to a printhead in the printer.

Abstract: A program creates a unitary mask for use over a whole image, with one pattern. The mask need not be full image size; it may be tiled. In the field a printer forms a mask and prints with it, best in the same session, before another image needing another mask, whether due to different image activity or type, or operating conditions. Constraints are controlled to ensure solution. Printout can start before a mask (even the part needed to finish a top swath) is done, going columnwise in each swath. In other invention facets, a program forms a mask of size significant relative to the program and prints with it. Other facets check print conditions and form adapted masks; or find nozzles that cannot back up a known-failed nozzle and to back it up form masks with all able nozzles; or assess image activity and inject mask randomness accordingly.

Abstract: An inkjet printer includes a print formatter circuit which receives high-level printing signals from a host computer, such as a PC or mainframe computer. The print formatter circuit translates the high-level printing signals into signals of an intermediate-level interface language, which is communicated to a printhead controller circuit. The printhead controller circuit in turn translates the intermediate-level interface language signals into discreet-event commands, and other finite action-element or condition-element signals or requirements, that are communicated to the inkjet printer and to a printhead in the printer.

Abstract: An inkjet printer includes a print formatter circuit which receives high-level printing signals from a host computer, such as a PC or mainframe computer. The print formatter circuit translates the high level printing signals into signals of an intermediate-level interface language, which is communicated to a printhead controller circuit. The printhead controller circuit in turn translates the intermediate-level interface language signals into discreet-event commands, and other finite action-element or condition-element signals or requirements, that are communicated to the inkjet printer and to a printhead in the printer.