초록 ▼

In a printer of the kind which uses a continuous form print sheet having a plural pages each defined by perforated score lines formed in the widthwise direction of the sheet, a sheet feed control device is provided for controlling a sheet feed means for feeding the sheet. The control device includes

In a printer of the kind which uses a continuous form print sheet having a plural pages each defined by perforated score lines formed in the widthwise direction of the sheet, a sheet feed control device is provided for controlling a sheet feed means for feeding the sheet. The control device includes a central processing unit which upon measuring a first line distance on the sheet, controls a sheet feeding means so that the perforated score line in the bottom of a printed page is brought in coincidence with a sheet cutting position. The print sheet can thus be separated at the line of perforations even if the first line distance is differently than that of the previous sheet.

대표청구항 ▼

A sheet feed control device in combination with a printer of the kind including feeding means for moving a print sheet in a sheet feeding direction along a sheet passageway, said printer sheet having a leading edge, and said sheet passageway having first, second, third and fourth positions, said sec

A sheet feed control device in combination with a printer of the kind including feeding means for moving a print sheet in a sheet feeding direction along a sheet passageway, said printer sheet having a leading edge, and said sheet passageway having first, second, third and fourth positions, said second position being downstream with respect to said sheet feeding direction of said first position and said third and fourth positions being upstream with respect to said sheet feeding direction of said first position, a platen disposed alongside of said first position for supporting said print sheet, a print head disposed alongside of said first position to confront said platen and bidirectionally movable along said platen for carrying out printing on sasid print sheet supported on said platen, and a tear bar disposed alongside of said second position, said device comprising: indexing means, disposed alongside of said third position, for indicating to an operator the initial print position of a preselected line; detection means disposed alongside of said fourth position for detecting a presence of said print sheet and producing a sheet presence signal; measuring means responsive to said sheet presence signal for measuring a distance L4 between said fourth position and a position of said leading edge when said print sheet is placed in a position where said preselected line is positioned to said third position and outputting a distance signal; and a control means for controlling said feeding means in accordance with distances L1 between said first position and said third position, L2 between said first position and said fourth position, and L3 between said first position and said second position and said distance L4, said control means comprising a first control means for controlling said feeding means to move said print sheet to a position where said preselected line is in coincidence with said first position and a second control means for controlling said feeding means to move said print sheet to a position where said leading edge of said print sheet projects over said second position by a predetermined length.