US 2327215 A
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Allg. l?? 1943, WL PQTTER Zgghl SPOT CARBON FORM SHEET PAGE Filed Sapt. g5, 1942 E Z :1:0015 I INVENTOR ATORNEYS Patented Aug. 17, 1943 SPOT CARBON FORM SHEET PACK y Charles Potter,l Waltham, Mass., assignor to Atlantic Register` Company, Waltham, Mass., a corporation @Massachusetts S Application rllhis invention relates 'to`a`pack of form sheets of combined record and transfer character and has'ior its object an arrangement of improved utility and economy of manufacture of said packs."
A coinbined'record andtransfer sheet has'upon one face a printed form with blank spaces to be lled in and `has applied to Athe Opposite face corresponding to said blank spaces, spot coatings of carbon transfer ink whereby any filled in entries upon the upper face may be transferred in carbon copy form to a second sheet underlying the same. These record-transfer sheets are relatively thin and somewhat translucent. However, they usually have suticient weight and sizing to prevent ordinary printing from showing through, but they are generally not suiciently Opaque to prevent the darkened spot carbon applications from showing through the translucency of the sheet. One of the objects of the present invention is to eliminate this showing through of the carbon spots without making the sheet unduly expensive and heavy in weight.
The pack is conveniently formed from a strip of several form sheets joined by lines of weakness and a further object of the invention isto provide a folded pack whereby the underlying sheets willV be in proper relation to receive thev vform sheets, here shown as four in number;
Fig. 2 is an under side view of the same strip;
Fig. 3 is a View showing one manner of Yfolding the strip in accordance with the invention;
Fig. 4 is a View showing another manner of folding said strip in accordance with the inven# tion: and
5 is a sectional view along line --S Fig. 2 to show superposed coatings von the transfer side of the sheet.
t will be understood that the thickness of the sheets and coatings are greatly exaggerated in the views for the purposes of illustration.v
Referring particularly to the drawing, the strip as a whole is indicated at 5 and is made up of several form sheets, four in number, L2, and 4. However, the number of sheets making up ofV sptemberzs, 1era-serial no. 459,39?t
loiaim. (C1. 28s- 12) thestripv islnot important. VThe lines of weakness joiningy the adjacent sheets'are indicated at (iv and along these lines the sheets may `eventually be separated from one-another.
As shown in Fig.. l, the lower'most sheet i which is intended to be the uppermost sheet of the pack whenV folded, has --printed thereon any desired iorrn with certainV blank spacesl l, 8,. a`nd.9,-
adapted to be'iiiled in in accordance with the use of the form. yIn Fig. 2` the vreversesides of the sheets of Fig'iare indicatedas |22', 3', and 4f, respectively. The under side l' of sheet i for instance is blank except for certain restricted areas thereof indicated at .'i, S', 'and 9', which areas correspond 'approximately to the blank areas l, 8, and 8 of the upper face of said sheet.
Theareas 1', 8', and 9 are treated with spot carbon applications of any suitable carbon ink which will transfer in the usual manner, any impression made on the corresponding upper side of said sheet. However, before said spot carbon transfer ink applications are made to the areas v aforesaid, these areas first have applied thereto carbon transfer ink Il.
a coating of color material, preferably of the same tint as the body Of the sheet to which it is applied andbeing of suicient body to render said areas substantially opaque or at least more opaque than the balance of the sheet.
v The purpose of these colorcoats in the aforesaid restricted areas 1', 8', and A9' is to furnish a background 0r base body for the carbon transfer ink later applied thereto, and particularly so that .said darkened spots of carbon ink will not show through the body of the sheet l and be apparent from its upper side in the areas 1, t, and 9. The
superposed 'applications of the color coat and carbon transfer ink are shown in Fig, 5 wherein said color background is indicated at lil and the It will be understood that in this view the sections of the said coating are greatly exaggerated and that on the actual sheet there will be no apparent difference in thickness of the sheet at the places where these superposed coatings are applied. The color application I0 may be of any suitable paper coating of non-transferable material, for instance a white ink may be used on white paper. The method of applying the coat l0 as well as the carbon transfer ink Il may be by suitable successive printing operations.
The remaining sheets. of the` strip, viz. 2, 3, and 4, will likewise have printed thereon the forms similar to that on sheet I although there might be slight changes in said forms in accordance with the use of the same. Due to the manner of namely sheet 2 in Fig. 1. This sheet on its upper, side (as seen in Fig. 1) is to be left entirely blankA because in the four sheet pack shown' there are no sheets beneath it to receive the transfer impressions.
Fig. 3 shows one manner of folding a strip. of
Y four sheets into a pack in order to bring the sheet I to uppermost position andsheet 2'to' the lowermost position. In this form of the pack the entire strip is folded once in its middle and then therfoldedportions'are. againy foldedv in the middle, the: folds: taking place f alongthe weakeninglines. In order-to have. the folded2 pack lie as flat as possible it is'alsordesirable` that thesheets I; 2; 3, and l' shall beef-.very slightly reduced areasuccessively. y
Fig; 4 shows anotherY manner of, folding.- the packfrom a stripof. four. sheets'.- In this form of; pack also it. will bezobserved that sheetr IV is uppermost and sheetZ is. lowermost. The advantageof both these Ways` of folding a sheet into its pack is that a single embracing fold, indicated at I2 in Fig. 3 and at I3 in Fig. 4, is prey. sented as the leading edge of the pack for being led into the typewriter when the folded pack is introduced forl being typed. This arrangement makes the folded pack substantially equivalent to a single sheet With respect to its convenience in being so introduced into the typewriter. In the usual. form of pack when several edges` are presented as the leading edges for being introduced into the typewriter they are apt to cause a disarrangement of the sheets and imperfect registration of the carbon spots with the blanks to be lled in. This difficulty is avoided by having the pack with a single folded leading edge.
A vpack ofv form record sheets in superposed relation, each'l sheet having upon its upper face a, printed form with one .or more blank spaces to be filled in, and each of `said sheets except the bottomy sheet of the pack having a spot application iny arestrictedspace or spaces to correspond to-said blank space or spaces of its upper face, first a color'coat ofthe same tint as the body of the sheet and of non-transferable materialv to render said' space or spacesl substantially opaque in contrast tothe balance of the sheet` and then superposed upon said color coat. a coating'of transfer ink.
CHARLES. W. POTTER.