Semiautomatic paper setting system

A typing/printing system in which a sheet of paper may be set semiautomatically prior to typing/printing operation, said system comprising:

• a platen roller around which said sheet is to be set;
• first driving means for rotating said platen roller;
• a carriage having mounted thereon a typing/printing head for typing/printing desired information on said sheet and means including a paper guide for defining a paper passage gap with said platen roller, said carriage being provided reciprocatingly movably along the length of said platen roller;
• second driving means for moving said carriage along a travelling path defined in parallel with the longitudinal axis of said platen roller;
• first holding means movable into an operative position for holding said sheet against said platen roller at a first holding position and an inoperative position separated away from said platen roller;
• first control means including a manually operable auto-set lever for controlling the location of said first holding means such that said first holding means is located at said operative position when said auto-set lever is at a first setting position and at said inoperative position when said auto-set lever is at a second setting position;
• second holding means movable into an operative position for holding said sheet against said platen roller at a second holding position and an inoperative position separated away from said platen roller;
• second control means for controlling the location of said second holding means at either said operative or inoperative position;
• switch means which is operated when said auto-set lever is changed from either one of said first and second setting positions to the other;
• and
• means including a control unit including at least one central processing unit for controlling the driving conditions of said first and second driving means, said control unit sending a first signal to said driving means to move said carriage to a first predetermined position which corresponds approximately to the center of said sheet of paper across its widthwise direction in response to a first control signal supplied from said switch means when said auto-set lever is moved from said first setting position to said second setting position and said control unit sending a second signal to said first driving means to rotate said platen roller to advance said sheet of paper over a predetermined distance in the line-feed direction and then sending a third signal to said second driving means to move said carriage to a second predetermined position along said travelling path in response to a second control signal supplied from said switch means when said auto-set lever is moved from said second setting position to said first setting position.