Printer having carriage drive control arrangement

Details Printer having carriage drive control arrangement Printer having carriage drive control arrangement

1996-10-30

1999-04-13

Le, N.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

400279, 347 14, B41J 2938, B41J 2300, B41J 2116

Patent

active

058943153

ABSTRACT:
A printer has a carriage drive control arrangement. A first control portion is provided for controlling ink ejection of a print head. A second control portion is provided for controlling a feed motor for driving a platen. A carriage mounts thereon the print head and is provided movably along a paper on the platen. A carriage control circuit is provided for controlling a carriage drive motor. A photosensors are connected to the carriage control circuit. The photosensors produce and transmit pulse signals to the carriage control circuit where moving distance and moving velocity of the carriage are computed based on the pulse signals. A second control portion transmit data of interrupt command output conditions to the carriage control circuit, the conditions being preset moving distance and preset moving velocity. If the computed distance or velocity is coincident with the preset distance or velocity, an interrupt command signal is transmitted from the carriage control circuit to the second control portion. Based on the interrupt command signal, the second control portion will transmit necessary data for changing driving mode of the carriage drive motor by way of the carriage control circuit.

REFERENCES:
patent: 4777609 (1988-10-01), Cavill et al.

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