Patent ID: 11938725
Assignee: SCREEN HOLDINGS CO., LTD.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 4:
5. A recording medium recording a printing program in a computer-readable manner, the printing program causing a computer to control ejection of ink to a printing medium from a nozzle of an ejection head having a pressure chamber storing ink therein, the nozzle communicating with the pressure chamber, and a driving element giving pressure variation to the ink inside the pressure chamber, and causing the computer to perform:
determining N output timings from the first output timing to the N-th output timing which are arranged in chronological order, N being an integer not smaller than 2; and
ejecting ink from the nozzle by outputting an ejection signal to the driving element at each of the N output timings so that the driving element gives pressure variation to the ink inside the pressure chamber in response to the ejection signal, while moving a printing medium facing the nozzle relatively to the ejection head,
wherein in determining the output timings, performed is a timing determination operation in which N candidate timings from the first candidate timing to the N-th candidate timing which are arranged in chronological order at a time interval in accordance with a relative speed of the printing medium to the ejection head are set and the N output timings are determined on the basis of a prohibition interval provided to a predetermined range at which a predetermined time elapsed from a starting point timing and the N candidate timings,
the first candidate timing among the N candidate timings is set as the first output timing among the N output timings, and
in the timing determination operation, when the I-th candidate timing is set outside the prohibition interval whose starting point timing is the (I−1)-th output timing, the I-th candidate timing is determined as the I-th output timing, and on the other hand, when the I-th candidate timing is set inside the prohibition interval whose starting point timing is the (I−1)-th output timing, a computation to determine that a timing after the prohibition interval is the I-th output timing is performed for the second and later candidate timings in chronological order, I being an integer not smaller than 2 and not larger than N.