EMPHASIS PRINTING SYSTEM IN MATRIX TYPE LINE PRINTER

摘要

PURPOSE:To make it possible to easily perform emphasis printing only by internal treatment, by controlling the operation of a hammer corresponding to output showing emphasis printing by an emphasis printing order discrimination means and freely performing the overlaping or shift printing of the same character. CONSTITUTION:During the rotation of the belt 1 trained around wheels 2, a sensor 7 detects a character mark while a counter 8 counts the same and, when a reference timing marks is detected, resetting is performed. For example, when a printing order is a fifth corresponding type 3, said type 3 is judged by a printing content confirming means 9 and the presence or absence of an emphasis printing order is subsequently judged by an emphasis printing order diacrimination means 11. Herein, when the presence of the emphasis printing order is confirmed, a printing number discrimination means 13 judges whether the detection of the type is a first time and, if a first time, a hammer 4 is operated by the drive signal from a hammer drive circuit 15 and applies printing to paper 10. Next, if a second time, the hammer 4 is operated through a hammer operation delay means 14 to perform shifted shadow printing.