公开(公告)号：CA1191387A

公开(公告)日：1985-08-06

申请号：CA411859

申请日：1982-09-21

Applicant: IBM

Inventor： BIGBIE SAMUEL E ,  CAVILL BARRY R ,  DODGEN DAVID F ,  NAWY ALBERT A

IPC: B41J29/46 ,  B41J19/18 ,  H02P23/00 ,  B41J23/34

Abstract: PRINT HEAD MOTOR CONTROL SYSTEM USING ANALOG AND DIGITAL FEEDBACK of the Invention 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.

公开(公告)号：CA1147867A

公开(公告)日：1983-06-07

申请号：CA358495

申请日：1980-08-19

Applicant: IBM

Inventor： CAVILL BARRY R ,  STEUP ROBERT B

IPC: G06K15/16 ,  G06F3/12

Abstract: A data processing system or printer subsystem is provided with facilities for detecting emitter changes that have occurred during operating intervals. In a typical operation, a microprocessor initiates a command to a moving assembly, such as a forms feed assembly, then once the operation is initiated the microprocessor transfers to other program responsibilities, meanwhile periodically checking the status of the forms feed assembly. The forms feed assembly supplies emitter signals to the processor which are utilized by the microprocessor to determine whether or not any emitter changes have occurred during the intervals between the checking operations. The microprocessor has a stored data table and logic responsive to emitter signal conditions that had previously occurred (WAS) and that is further responsive to emitter signals that are presently occurring (IS) to supply an output in numbers of emitters indicative of both the extent and direction of movement of the assembly during the intervening interval. BC9-79-016

公开(公告)号：CA1191385A

公开(公告)日：1985-08-06

申请号：CA411840

申请日：1982-09-21

Applicant: IBM

Inventor： CAVILL BARRY R ,  DODGEN DAVID F

IPC: B41J19/14 ,  B41J19/18 ,  B41J29/38 ,  B41J29/50 ,  G05B19/23 ,  G05B19/416 ,  B41J23/36

Abstract: PRINT HEAD MOTOR CONTROL WITH STOP DISTANCE COMPENSATION 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.

公开(公告)号：AU538796B2

公开(公告)日：1984-08-30

申请号：AU6316180

申请日：1980-10-10

Applicant: IBM

Inventor： BROWN EARL T ,  CAVILL BARRY R

IPC: B41J33/14 ,  B41J29/38 ,  B41J33/32 ,  B41J33/34 ,  B41J33/51 ,  B41J33/60 ,  B41J35/36 ,  B41J3/12 ,  B41J33/00 ,  G06K15/00 ,  G06K15/10

Abstract: A microcomputer controls a ribbon drive assembly in a high speed wire matrix printer to eliminte ribbon slack, to insure proper ribbon positioning and to conduct diagnostics in conjunction with turning on the printer such as start-up time each day and after replacement of the ribbon with a new ribbon, the diagnostics checking to be sure that a ribbon is actually in the proper position, that it is threaded across the print line and also checking for proper operation of the ribbon drive, logic, and electronics. Tests are also made for proper ribbon drive during normal ribbon feeding operations.

公开(公告)号：CA1191388A

公开(公告)日：1985-08-06

申请号：CA411871

申请日：1982-09-21

Applicant: IBM

Inventor： CAVILL BARRY R

IPC: B41J29/46 ,  B41J19/18 ,  B41J19/30 ,  H02P1/18 ,  H02P23/00 ,  H02P29/00 ,  G06F15/46

Abstract: PRINTER CONTROL SYSTEM WITH CONTROLLED ACCELERATION AND DECELERATION 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.

公开(公告)号：CA1191386A

公开(公告)日：1985-08-06

申请号：CA411850

申请日：1982-09-21

Applicant: IBM

Inventor： BATESON JOHN E ,  BIGBIE SAMUEL E ,  CAVILL BARRY R ,  NAWY ALBERT A

IPC: B41J29/46 ,  B41J19/18 ,  B41J19/20 ,  B41J19/30 ,  H02P1/18 ,  H02P7/00 ,  H02P29/00 ,  B41J23/36

Abstract: PRINTER CONTROL SYSTEM WITH ERROR COUNT AVERAGING 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.

公开(公告)号：CA1138710A

公开(公告)日：1983-01-04

申请号：CA358590

申请日：1980-08-19

Applicant: IBM

Inventor： BROWN EARL T ,  CAVILL BARRY R

IPC: B41J33/14 ,  B41J29/38 ,  B41J33/32 ,  B41J33/34 ,  B41J33/51 ,  B41J33/60 ,  B41J35/36 ,  B41F1/44

Abstract: A microcomputer controls a ribbon drive assembly in a high speed wire matrix printer to eliminate ribbon slack, to insure proper ribbon positioning and to conduct diagnostics in conjunction with turning on the printer such as start-up time each day and after replacement of the ribbon with a new ribbon, the diagnostics checking to be sure that a ribbon is actually in the proper position, that it is threaded across the print line and also checking for proper operation of the ribbon drive, logic, and electronics. Tests are also made for proper ribbon drive during normal ribbon feeding operations. BC9-79-025