发明名称 FREQUENCY CONTROL SYSTEM IN INK JET PRINTER
摘要 PURPOSE:To synchronize the ink particle control with the space motor control to conduct a printing correctly, by a method wherein an oscillating frequency from a second oscillator is corrected by a reference frequency from a first oscillator when the power of a main control is ON. CONSTITUTION:According to a relation of a space resolving power being larger than a dot resolving power, the greatest common divisor is calculated. A microcomputer 11 conducts processing, such as a transfer from an input string buffer 10 to an image buffer 15 and the decision of a printing position, by using the greatest common divisor as a multiplier according to the change of the inputted printing data in character size, thereafter outputting a printing data. A printing is carried out after a carriage is moved a shortest distance either rightwards or leftwards. On the other hand, for the prevention of the occurrence of an accumulated error caused by the phase change-over of a space motor, which is a problem in this action, an output frequency which is outputted from a second oscillator 52a of a main control part 52 to control a whole printer is corrected by a reference clock frequency from a first oscillator 51a of an ink jet control part 51. In this manner, a printing can be conducted on a proper position from any of right and left positions and can be enhanced in speed.
申请公布号 JPS63302058(A) 申请公布日期 1988.12.08
申请号 JP19870135978 申请日期 1987.05.31
申请人 RICOH CO LTD 发明人 ARAKI SHIGEYUKI
分类号 B41J2/02;B41J2/015;B41J2/13 主分类号 B41J2/02
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