Plotting system

A plotting system comprising:

• stretching means for stretching a sheet;
• plotting means for forming images on the sheet stretched by the stretching means, being positioned on a side of one surface of the sheet;
• travelling hold means for holding the plotting means such that the plotting means travels back and forth in a first direction along the sheet stretched by the stretching means;
• the travelling hold means travelling back and forth in a second direction along the sheet stretched by the stretching means;
• travelling pressure receiving means positioned on another surface of the sheet stretched by the stretching means, the travelling pressure receiving means travelling back and forth in the second direction concomitantly with back and forth movements of the travelling hold means in the second direction and including a pressure receiving surface that receives a pressing force of the plotting means through the sheet and extends in the first direction;
• first supporting means for supporting the stretching means and the plotting means;
• second supporting means for supporting the travelling pressure receiving means;
• and
• coupling means for coupling the first supporting means to the second supporting means, so that the first supporting means and the second supporting means are separable from each other,
• wherein, when the first and second supporting means are separated from each other, the sheet is stretched and fixed on the system by the stretching means, or is removed from the system.

A plotting system comprising:

• gripping means for gripping a sheet;
• plotting means, positioned at one side of the sheet;
• travelling hold means for holding the plotting means;
• travelling pressure receiving means positioned at another side of the sheet, including a pressure receiving surface that receives a pressing force of the plotting means through the sheet;
• first supporting means for supporting the gripping means and the plotting means;
• second supporting means for supporting the travelling pressure receiving means;
• and
• mounting means for mounting the first supporting means to the second supporting means, so that the second supporting means is movable with respect to said first supporting means for enabling said first and second supporting means to be separable from each other,
• wherein, when the first and second supporting means are separated from each other, the sheet can be removed from the system.