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AssigneeInternational Business Machines Corporation
InventorsJohn Michael Carmichael, James David Hill, Donald Lee West
Estimating the term…
Printing apparatus has an ink jet printhead mounted on a carrier for movement during printing of characters between left and right margin locations relative to a document. A directionally oriented grating and associated circuitry is provided to maintain a record of character and ink drop printing locations. The printhead begins its movement prior to the left margin location and sweeps toward the right margin for printing of an entire line of characters. Thereafter, the printhead is returned to the aforesaid position prior to the left margin in readiness for another line sweeping action. Provision is made for testing carrier velocities encountered in movement to the right during printing as well as to the left during carrier return and for determining optimum times of operation of the carrier return magnet and its release in order to reduce time required for carrier turnaround.
Printing apparatus for printing information on a document during relative movement of said document and a print head assembly, wherein said relative movement involves movement of said assembly between left and right margin locations, printing of information occurring during a relative forward movement toward one of the left and right margin locations with printing of information beginning at the other of the left and right margin locations, and non-printing occurring during a relative return movement toward the other of the left and right margin locations, and said assembly going through a turn around interval representing a physical change in direction of relative movement between said document and said print head assembly from when said assembly starts to decelerate during relative return movement to the beginning of printing of information during relative forward movement, comprising:
Ink jet printing apparatus for printing information on a document by relative movement of said document and an ink jet print head assembly mounted on a carrier, wherein said relative movement involves movement of said assembly and carrier between left and right margin locations, printing of information occurring during a relative forward movement toward one of the left and right margin locations with printing of information beginning at the other of the left and right margin locations, and non-printing occurring during a relative return movement toward the other of the left and right margin locations, and said assembly going through a turn around interval representing a physical change in direction of relative movement between said document and said print head assembly from when said assembly starts to decelerate during relative return movement to the beginning of printing of information during relative forward movement, comprising:
Dependencies are inferred from the claim text.