Dynamic phase shifts to improve stream print

US8226217B2 · kind B2 · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Kim W. Montz · Webster, US
• Todd R. Griffin · Rochester, US
• David L. Jeanmaire · Brockport, US
• Robert Link · Birkenfeld, DE

Key dates

• Filing date: Nov 6, 2009
• Grant date: Jul 24, 2012
• Expiry date: Jan 10, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41J2002/033
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A method of forming print drops includes forming drops of a first size by applying drop forming energy pulses during a unit time period, τ0; forming drops of a second size by applying drop forming energy pulses during a second drop time period, τm, wherein the second drop time period is a multiple, m, of the unit time period, τm=m*τ0, m≧2; providing timing between drops for printing consecutive pixels is τi=a*τ0 where a is an integer≧m; forming non-print drops and print drops according to the liquid pattern data; delaying the timing of the pulses for the drop forming energy pulses sent to the drop forming transducers of group number g relative to the drop forming energy pulses sent to the transducers of a first group by a delay time τL, where τL=g*(INT(a/n)+1/n)*τ0+τb where g is an integer<n.