Field of the Invention

This invention relates generally to maili envelopes and, more specifically, to an envelo assembly for utilization with a sheet-feed printi apparatus.

10 Background of the Invention

In the field of office and home computing a printing equipment, the advent of personal computi systems, and computer systems equipped with sheet-fe printers, has made the standard typewriter virtual l-> obsolete. However, the problem of addressing envelop has in some cases led to the retention of typewrite when they would otherwise be eliminated. Mo specifically, the printer devices associated wi computer systems most commonly use either continuou 0 forms or require the loading of multiple sheets of pape into a feed bin. It has previously been proposed t employ a roll of envelope paper which can be separate into single envelope forms by tearing and folding alon a number of transverse lines. Such envelope rolls ca 5 be utilized with continuous form feed printers but no with sheet-feed apparatus. Sheet-feed devices, e.g. feed bins, paper trays or paper cassettes are capabl only of printing on standard 8 1/2 by 11 inch siz paper, or modest variations therefrom. Thus, thos 0 printing systems utilizing the sheet-feed method ar incapable of printing directly upon the standard lette size business envelope. The addressing of envelopes fo letters or documents must be done manually on typewriter which is often used for nothing else. Whil 5 it has become standard practice to employ prepare

addressing labels for application to the envelopes, this- process is itself time consuming and inefficient. In addition, the sheet-feed apparatuses require a substantially flat piece of paper in order to efficiently feed the paper through the printing process. It is, therefore, a principal object of the present invention to provide an envelope assembly which is capable of being utilized with a sheet-feed printing apparatus and which can be fed into the machine from a stacked configuration.

10

Summary of the Invention

In accordance with one aspect of the present invention, a dual envelope assembly for utilization with a sheet-feed printing apparatus includes a first paper

- ^• sheet and a second paper sheet. The first paper sheet is bisected by a transverse perforated tear line, with one envelope being formed on either side of the tear line, and has adjacent first and second transverse fold lines to form the flaps for the envelopes. The second

20 paper sheet is a composite sheet having more than one section. The second sheet is superposed over the first paper sheet, with first and second sections thereof, which are substantially the same size, terminate adjacent the fold lines. An adhesive border is used to

25 permanently secure the first and second sections of the second paper sheet to the first paper sheet. The adhesive is disposed along the borders of the first paper sheet, forming two separate envelope pockets that open toward the first and second transverse fold lines.

30 The first paper sheet also has first and second adhesive flaps located between the tear line and the first and second transverse fold lines. The envelope assembly may have two addresses applied to the first sheet in a sheet-feeding printer apparatus. After being imprinted

3 by the printer apparatus the envelopes may be

subsequently separated at the perforated tear line to form two separately addressed envelopes. The first and second adhesive flap means and closure flaps may then be folded for sealing closure with the pockets.

In accordance with anoth-er aspect of this invention, the second composite sheet may further include a silicone-coated release strip, which is removable overlying the adhesive flap means. The

10 silicone-coated release strip and the first and second sections may be of substantially the same cross- sectional thickness in order to most efficiently move through the printer apparatus.

Alternatively, the present invention may be

- ^■• * utilized without the silicone-coated release strip in which case the adhesive flap may be overlaid with paper strip coated with a moisture-activated adhesive.

In accordance with a feature of the invention, the two sheets form a dual envelope assembly which is 0 substantially uniform in thickness so that a stack of the envelope assemblies is readily fed through a sheet feed printer. In this connection, the release strips in one embodiment, and the strips carrying the moisture activated adhesive in the other embodiment provide 5 uniformity of thickness toward the center of the assembly.

Other objects, features and advantages of the invention will become apparent from consideration of the following detailed description and from the accompanying 0 drawings.

Brief Description of the Drawings

Fig. 1 is an isometric view of a first embodiment of a dual envelope assembly illustrating the principles

of the present invention;

Fig. 2 is a cross-sectional view of the envelope assembly of Fig. 1 taken through plane II-II of Fig. 1;

Fig. 3 shows one-half of the dual envelope assembly of Fig. 1, showing partial removal of the silicone coated release strip, prior to sealing the envelope;

Fig. 4 is a cross-sectional view taken generally along lines IV-IV of the envelope assembly as shown in Fig. 3, but following sealing of the envelope;

Fig. 5 is an isometric view of an alternative

10 embodiment of the envelope assembly;

Fig. 6 is an isometric view of the envelope assembly of Fig. 5 after separation of the two envelopes;

Fig. 7 is a cross-sectional view of the envelope - ^{■ '} assembly taken through plane VII-VII of Fig. 6; and

Fig. 8 is a cross-sectional view of the envelope assembly taken through plane VII-VII of Fig. 6 showing an envelope in a sealed configuration.

20 Detailed Description

Referring more particularly to the drawings. Fig. 1 is an isometric view showing a preferred embodiment of the dual envelope assembly 10. Dual envelope assembly

10 is divided into two envelope sections by transverse 25 perforated tear line 12. A first paper sheet 14 (best shown in Fig. 2) includes perforated tear line 12 and transverse fold lines 22 and 24. First paper sheet 14 may be rectangular in form, for example 9 1/2 inches by

11 inches, so as to fit in a common paper tray or 0 similar sheet-feed device.

A second composite paper sheet is made up of a first composite section 16, a second composite section

18, and a third composite section 20. The first and

35 second composite sections, 16 and 18 respectively, are

superposed over opposite ends of first sheet 14 and attached thereto by adhesive 26.

The adhesive border 26 is an adhesive of the type normally known as a permanent adhesive. The adhesive ^ border 26 is applied in a U-shaped configuration so as to extend around the border of first paper sheet 14 where first composite section 16 and second composite section 18 are superposed thereover. The result is that first and second pocket chambers 38 and 40 are formed; the borders of which are formed by a permanent bond between respective composite sections 16 and 18 and underlying first paper sheet 14. In accordance with

^• standards and procedures as established by the Pressure

Sensitive Tape Council, the designation of a "permanent

---' adhesive" refers to an adhesive having a peel force in the order of 3 pounds or more. The force specified is that required to peel (peel force) a one-inch sample strip at right angles from a stainless steel surface to which it has been adhered. 0

Referring now to Fig. 2, Fig. 2 is a partial cross- sectional view taken along lines II-II of the envelope assembly of Fig.l. Pocket chambers 38 and 40 are formed by the superposition of first and second composite 5 sections 16 and 18 respectively upon first paper sheet 14. First pocket opening 36 of pocket chamber 38 allows for the subsequent insertion of materials into one of the envelopes of the dual envelope assembly 10. Similarly, second pocket opening 48 of pocket chamber 40 0 allows for insertion of materials into the envelope constituting the other half of envelope assembly 10. The first closure flap portion 42 of first paper sheet 14 is the portion between first transverse fold line 22 and perforated tear line 12; and the second closure flap 5 portion 44 of the first paper sheet 14 is the portion

between second transverse fold line 24 and perforated tear line 12. Closure flaps 42 and 44 are coated by thin stripes of permanent adhesive 28 and 30, respectively.

The second composite paper sheet includes a third composite section 20 which is made up of a first removable strip 32 and a second removable strip 34. The first and second removal strips 32 and 34 are separated by perforated tear line 12 and may be made of, for example, paper coated with a silicone release layer, to allow easy removal of the strips from the adhesive stripes 28 and 30 respectively, as shown in Fig. 3.

Turning now to Fig. 3, Fig. 3 shows an envelope formed from one-half of envelope assembly 10 after separation along perforated tear line 12. The removable strip 32 may be removed from the adhesive stripe 28 in order to provide a sealing surface for closure of pocket chamber 38 (best shown in Fig. 4) . The closure flap 42 coated by the permanent adhesive stripe 28, may then -be folded along transverse fold line 22 in order to seal envelope pocket 38. The removable strip 32 may then be discarded. The provision of removable strips 32 and 34 affords an even surface (best shown in Fig. 2) enabling efficient feeding into a printer sheet-feed apparatus. Further, utilization of removable strips 32 and 34 enable effective closure of the envelope without utilization of moisture.

Fig. 4 is a cross-sectional view of an envelope made up of one-half of envelope assembly 10, in a closed or sealed condition. Closure flaps 42 and 44, being coated with stripes of permanent adhesive 28 and 30, form a permanent closure of pocket openings 36 and 46 when folded at transverse fold lines 22 and 24 respectively. Pocket chambers 38 and 40 are then bonded

by a permanent adhesive on all our sides, ther precluding the contents placed within pocket chambers and 40 from accidentally falling out.

It should be noted here that envelope assembly is not separated along perforated tear line 12 un after the address or other image is reproduced there The envelope assembly can be directly imaged with pertinent information, e.g., mailing address, ret address, etc., through a software program in the case a printer or from an original document in the case of copier. Envelope assembly 10 is placed in a sheet-fe apparatus so as the printing device imprints upon eith or both halves of first paper sheet 14. It is apparen then, that the dimensions of the envelope assembly m vary slightly, limited by printer feed sizi restrictions. As subsequent closure of closure flaps and 44 make apparent, the printer image is made on t exposed side of first paper sheet 14 that is opposi the second composite paper sheet.

An alternative embodiment 10' of envelope assemb 10 is shown in Fig. 5. First closure flap 42 and seco closure flap 44 are coated with stripes of permane adhesive 28' and 30' to permanently secure strips paper 50 and 52 over the flaps 42 and 44. Strips paper 50 and 52 make up third composite section 20 a are coated with moisture-activated adhesive Alternative embodiment 10' replaces the first removab strip 32 and second removable strip 34 of envelo assembly 10, with strips of paper 50 and 52. The cros sectional thickness of alternative embodiment 10' constant (best shown in Fig. 7) , as was that of envelo assembly 10. A constant cross-sectional thickne allows for easy stacking and efficient feeding of t envelope assemblies into paper trays, cassettes, etc. The imprinting of alternative embodiment 10'

performed similarly as was done with envelope assemb 10.

Alternative embodiment 10' may then be separat along perforated transverse tear line 12 as shown Fig. 6. In view of the fact that many mail posta meters have envelope sealing capabilities, t utilization of a moisture-activated adhesive coati paper strips 50 and 52 allows the envelope of su alternative embodiment 10' to be posted through su machines and automatically seal closure flaps 42 and 4

Referring to Fig. 7, Fig. 7 is a cross-section view of alternative embodiment 10' after separati along perforated tear line 12. Moisture-activat strips 50 and 52 are so applied as to be substantially the same cross-sectional thickness first composite section 16 and second composite secti 18 when same are adhesively applied by adhesive bord 26 to first paper sheet 14. Again, the consistency a similarity of cross-sectional thicknesses between pock chambers 38 and 40 and closure flaps 42 and 44 allow f ease and efficiency of feeding through a single shee feed printing apparatus.

It should be noted that permanent adhesive strip 28' and 30' and strips of paper 50 and 52 could replaced ^' with a single strip of moisture-activat adhesive subject only to the cross-sectional thickne requirements of sheet-fed apparatus.

Sealing of pocket chambers 38 and 40 by closu flaps 42 and 44 is depicted in Fig. 8, a cross-section view of alternative embodiment 10' taken through pla VII-VII of Fig. 6. Closure flaps 42 and 44 are fold along transverse fold lines 22 and 24, respectivel thereby effectively sealing pocket openings 36 and

and preventing the contents of pocket chamber 38 f spilling out.

The overall dimensions of the dual envel assembly are limited only by the capabilities of feed bins or paper trays of the printers or copiers. accordance.with most common paper cassette tray copie the dual envelope assembly may be from about six eight inches up to 14 inches in length and up to n inches in the transverse direction. However, it contemplated that variations in these dimensi suitable for use in available sheet feeding printe may be used.

In the foregoing description of the prese invention, a preferred embodiment and alternati embodiments of the invention have been disclosed. It to be understood that other design variations are with the scope of the present invention. Thus, by way example and not of limitation, the envelope assemb construction can be produced using a variety of metho and adhesives. In addition, utilization of legal si or 14 inch paper may enable 3 envelopes to manufactured on each assembly sheet. Further, the du envelope assembly may be manufactured with one of t envelopes rotated 180 degrees, and the closure fl portion of one envelope attached to the bottom of t pocket chamber of the other. Accordingly, the inventi is not limited to the particular arrangement which h been illustrated and described in detail herein above.