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公开(公告)号：DE3684423D1
公开(公告)日：1992-04-23
申请号：DE3684423
申请日：1986-12-10
Applicant: IBM
Inventor： CAVILL BARRY RICHARD , SCHULZ RAYMOND ANDREW
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公开(公告)号：DE3271001D1
公开(公告)日：1986-06-12
申请号：DE3271001
申请日：1982-08-19
Applicant: IBM
Inventor： BIGBIE SAMUEL EUGENE , CAVILL BARRY RICHARD , DODGEN DAVID FRED , NAWY ALBERT
Abstract: A control system for a bidirectional printer having a print head carriage movable at different speeds on different printing lines employs a microcomputer which generates a desired velocity profile for the carriage motion. This desired velocity profile is continuously compared with the actual velocity and the error voltage generated is used to control pulse width modulator circuitry which supplies driving power to carriage drive motor.
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公开(公告)号：DE3276145D1
公开(公告)日：1987-05-27
申请号：DE3276145
申请日：1982-09-16
Applicant: IBM
Inventor： BATESON JOHN EDWARD , BIGBIE SAMUEL EUGENE , CAVILL BARRY RICHARD , NAWY ALBERT A
Abstract: In a control system for a bidirectional printer capable of printing at different speeds on different lines and in which the actual velocity of the print carriage is compared with a desired velocity profile to generate an error count, the error count is measured and averaged out for each direction and speed of carriage movement to compensate for the effect of changes in the printer system dynamics such as aging, wear, debris buildup, etc.
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公开(公告)号：AU554680B2
公开(公告)日：1986-08-28
申请号：AU8899082
申请日：1982-10-04
Applicant: IBM
Inventor： BATESON JOHN EDWARD , BIGBIE SAMUEL EUGENE , CAVILL BARRY RICHARD , NAWY ALBERT A
Abstract: In a control system for a bidirectional printer capable of printing at different speeds on different lines and in which the actual velocity of the print carriage is compared with a desired velocity profile to generate an error count, the error count is measured and averaged out for each direction and speed of carriage movement to compensate for the effect of changes in the printer system dynamics such as aging, wear, debris buildup, etc.
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公开(公告)号：DE3277184D1
公开(公告)日：1987-10-15
申请号：DE3277184
申请日：1982-09-16
Applicant: IBM
Inventor： CAVILL BARRY RICHARD , DODGEN DAVID FRED
Abstract: A control system for a bidirectional printer having a print head carriage movable at different speeds on different printing lines provides for equal stopping distance in the margin at both high and low speed operation. This is accomplished by delaying the initiation of stopping carriage motion when printing at low speed so that the carriage travels farther into the margin and this distance is controlled so as to be equal to the travel distance at the end of a line printed at high speed.
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Patent Agency Ranking
公开(公告)号：AU554681B2
公开(公告)日：1986-08-28
申请号：AU8899382
申请日：1982-10-04
Applicant: IBM
Inventor： BIGBIE SAMUEL EUGENE , CAVILL BARRY RICHARD , DODGEN DAVID FRED , NAWY ALBERT A
Abstract: A control system for a bidirectional printer having a print head carriage movable at different speeds on different printing lines employs a microcomputer which generates a desired velocity profile for the carriage motion. This desired velocity profile is continuously compared with the actual velocity and the error voltage generated is used to control pulse width modulator circuitry which supplies driving power to carriage drive motor.
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公开(公告)号：AU8899282A
公开(公告)日：1983-04-21
申请号：AU8899282
申请日：1982-10-04
Applicant: IBM
Inventor： CAVILL BARRY RICHARD , DODGEN DAVID FRED
Abstract: A control system for a bidirectional printer having a print head carriage movable at different speeds on different printing lines provides for equal stopping distance in the margin at both high and low speed operation. This is accomplished by delaying the initiation of stopping carriage motion when printing at low speed so that the carriage travels farther into the margin and this distance is controlled so as to be equal to the travel distance at the end of a line printed at high speed.
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公开(公告)号：AU8899082A
公开(公告)日：1983-04-21
申请号：AU8899082
申请日：1982-10-04
Applicant: IBM
Inventor： BATESON JOHN EDWARD , BIGBIE SAMUEL EUGENE , CAVILL BARRY RICHARD , NAWY ALBERT A
Abstract: In a control system for a bidirectional printer capable of printing at different speeds on different lines and in which the actual velocity of the print carriage is compared with a desired velocity profile to generate an error count, the error count is measured and averaged out for each direction and speed of carriage movement to compensate for the effect of changes in the printer system dynamics such as aging, wear, debris buildup, etc.
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公开(公告)号：DE3684565D1
公开(公告)日：1992-04-30
申请号：DE3684565
申请日：1986-12-10
Applicant: IBM
Inventor： CAVILL BARRY RICHARD , MALKEMES CHARLES DAVID , REINBERG KEVIN MICHAEL , SCHULZ RAYMOND ANDREW
Abstract: The present invention relates to a printer of the type which comprises a print head (24) for performing printing operations on a print medium, a drive system for moving the print head across a print medium at a selected speed, and a print head control system. The control system includes generating means for generating print head movement signals (ENC A, ENC B) corresponding to print head movement, a processor (2, 10), responsive to the print head movement signals and a command signal representing a required print head movement speed, to generate a drive signal (PWM) for supplying to the drive system so as cause movement of the print head at the required speed. According to the invention the printer is characterised in that the processor comprises means (2) for repeatedly comparing the print head movement signals with the command signals at predetermined time intervals and for changing the drive signal by an equal amount, for each comparison operation that indicates that the print head movement speed differs from the command signal speed, until the print head attains the required speed. The present invention also relates to a method of controlling the movement of the print head of a printer utilising a print head control system as above.
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公开(公告)号：AU558171B2
公开(公告)日：1987-01-22
申请号：AU8882482
申请日：1982-09-29
Applicant: IBM
Inventor： CAVILL BARRY RICHARD
Abstract: In a control system for a bidirectional printer capable of printing at different speeds on different lines, stored values representing the ideal velocities during the acceleration and deceleration of the print carriage for each direction and speed are compared with the actual values and any resulting difference is used to move the carriage velocity toward the ideal value.
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