US2261538A

US2261538A - Line justifying device

Info

Publication number: US2261538A
Application number: US255250A
Authority: US
Inventors: Brand Samuel
Original assignee: International Business Machines Corp
Current assignee: International Business Machines Corp
Priority date: 1939-02-08
Filing date: 1939-02-08
Publication date: 1941-11-04
Anticipated expiration: 1958-11-04

Description

ll Sheets-Sheet 1 Filed Feb. 8, 1959 FIGJ.

INVENTOR ATTORNEY m u 5: W H m 7 2 i 4 if 3 M mo 0 W o o o o e 9 m0 4 30 H 1 W n. M 7 I 7 1: i M 5 WQJ 1 w I i m 1 a j m w 3% M f 1 4 We o o o o m a 6 6 5 1 5.75 5 2 .|.5 w m m 4 m 77 5 Nov. 4, 1941. 5 BRAND 2,261,538

LINE JUSTIFYING DEVICE Filed Feb. 8, 1939 ll Sheets-Sheet 2 75 4S :75 Wm "M, i 30 I h" III" u l lllllllllllll HIIIIFIII INVENTOR ATTORNEY NOV. 4, 1941. 5, BRAND 2,261,538

LINE JUSTIFYING DEVICE Filed Feb. 8, 1939 ll SheebSSheet 3 INVENTEZR FIG. 3.

N v. 4, 1941- 3. BRAND 2,261,538

LINE JUSTIFYING DEVICE Filed Feb. 8, 1959 ll Sheets-Sheet 4 INVENTOR MW ATTORNEY Nov. 4, 1941.

S. BRAND LINE JUSTIFYING DEVICE Filed Feb. 8, 1939 ll Sheets-Sheet 5 Q In.

Ill] lNVE OR 7 M g,

ATTO R N EY Nov. 4, 1941. 5. BRAND 2,261,538

LINE JUSTIFYING DEVICE Filed Feb. 8, 1959 11 Sheets-Shee'h 6 FIG. 6.

124 INVENTQR ATTORNEY Nov. 4, 1941. 5. BRAND 2,261,538

LINE JUSTIFYING- DEVICE Filed Feb. 8, 1939 ll Sheets-Sheet '7 FIG. 8.

FIG. 10.

INVENTOR Ai'TORNEY Nov. 4, 1941-. BRAND 2,261,538

LINE JUSTIFYING DEVICE Filed Feb. 8, 1939 ll Sheets-Sheet 8 FIG 8o. as,

FIG. 8b. W/

FIG. 923

: INVENTg ATTORNEY Nov. 4, 1941. 5. BRAND 2,261,538

LINE JUSTIFYING DEVICE Filed Feb. 8, 1939 ll Sheets-Sheet 9 FIG. 13.

INVENTOR AfTORNEY Nov. 4, 1941. s. BRAND 2,261,538

LINE JUSTIFYING DEVICE Filed Feb. 8, 1939 ll Sheets-Sheet 10 FIGJ4.

IFE

JUST/FY DEEA'IRG/IID FIG 15.

This line is 3 points short, and is justified-accordingly? This line does not "head to be justified as it is full lengt Thisfline must be justified, it being 8 points 'shortl This line is S'points short, and is justifiea accordingly. This line does not need to be juStifieQ as it is full length This line must be justified, it being 8 points short- INVENTQR ATTORNEY Nov. 4, 1941. s. BRAND LINE JUSTIFYING DEVICE Filed Feb. 8, 1939 ll Sheets-Sheet 11 FIG. 16.

INVENTOR BY 9 m4.

ATTORN EY Patented Nov. 4,. 1941 The International Business Machines Corporation, New York. N. Y., a corporation oLNew York Application February 8, 1939, SerialNo. 255,250

a; c aims.

. This invention relates to a method of justify,-

ing lines oi typewritten matter or the like and optical means for automatically carrying such.

method into effect. c

Heretofore photo-mechanical justiilcation o1 printed or typewritten matter has been accom-' plished in a number of ways, one method being to photograph successively each of a plurality of lines of typewriting, varying the distance between the copy and the photographic plate according to the length of each line in order that the lines may be of equal lengthv on the photographic plate; other methods being that of varying the distance between the words according to the length of each line, and that of varying the distancesbetween letters and words of each line so i that the lines may be of equal length.

All of the photo-composing devices 0! which applicant has knowledge, require many manual adjustments, that is, adjustments for each line, word or'letter toybe justified. With this in mind the present invention has for itspurpose the provision of a machine which will justify typewritten matter or the like. the machine being fully automatic, requiring the attendance of an operator only for the insertionoi new matter to be justified and to replenish the supply of photographic film.

Another object of this invention to provide a novel photographic justifying device capable ofv automatically scanning typewrittendocuments of indeterminate length, successively justifying each line according to its length and producing thereby photographic negatives of complete documents. e V

Another object of the invention is to provide a device which automatically determines the amount of justification required for each successive line ofa typewritten document or the like and which automatically produces a photographic negative of said document whereon each line is lengthened or shortened accordingly.

A further object isthe provision of novel means to automatically determine the amount of justification required for each line of typed matter.

Still another object is the provision of novel scanning means whereby each line of typed matter is automatically reproduced in justified negative form.

Other objects of the invention" will be pointed out in the following description and claims and illustrated in the accompanying drawings, which disclose, by way of example, the principle of the invention and the best mode; which has been contemplated, of applying that principle.

In said drawings: Fig. 1 is a top plan viewof the machine.

Fig. 2 is a view in side elevation taken on line 7 2-2 of Fig. 1 and looking in the direction of the arrows.

Fig. 3 is a sectional view on Fig. 4 is a sectional view on tion of the arrows.- p (I Fig. 5 is a detail sectional view on an enlarged scale taken on line 55 of Fig. 1 and showing the mechanism for feeding the original document to be justified.

. Fig. 6 is a detail sectional view on an enlarged scale taken on line 66 Fig. 1 showing the mechanism for feeding the photographic film.

'Fig. 7 is a detail view of the cam-Ioroperating the feed mechanism shown in Fig. 6.

Fig. 8 is a detail view of the mechanism for controlling the extent 01' justiflcation.

Fig. 8a illustrates a modified form of the mechanism shown in Fig. 8. I J

Fig. 8b is a diagram illustrating justiflcationby lengthening or shortening the line.. Fig. 9 is a sectional view on an enlarged scale taken on line 9--9 of Fig. 8 looking in thedirection of the'arrows.

Fig. 9a is a modified form of the mechanism shown in Fig. 9.

' Fig. 10 is a sectional-view taken on line Fig. 9 looking in the direction of the arrows.

Fig. 11 is a detail view of the justifying set up mechanism.

Fig. 12 is a detail view of a part of the justitying mechanism.

Fig. 12a shows a modified nism shown in Fig. 12.

Fig. 13 is a detail view of the mechanism operating the scanning lens carriage.

Fig. 14 is a timing chart.

form of the mecha- Fig. 15 illustrates printed matter before and,

after justification.

Fig. 16 is the circuit diagram.

Fig. 17 is a detail view showing the papercarriage and the scanning lens carriage.

Fig. 18 is a fragmentary view of a part of the photo-electric sensing mechanism. I

Fig. 19 is a horizontal sectional view through the optical system looking downwardly.

Fig. 20 is a fragmentary view showing the structure of the film severing device.

Fig. 21 is a detail view of the film cutter.

To accomplish the objects set forth above, the

I I an enlarged scale taken on line 8-3 of Fig. 1 looking in the' direc- 2 tion of the arrows. j l

an enlarged'scale taken on line 4-4 oi Fig. 1 looking in the direclam for

ported on legs 36.

illustrative embodiment of the invention includes generally a carriage to support the original document 30 (Figs. 1 and 3) and a carriage, indicated generally at 3|, in which is supported the photographic material such as sensitized film or paper, although, obviously, a sensitized plate may be utilized if desired. Between the document carriage and the film carriage is a scanning carriage indicated at 32 (Figs. 1, 2, 3, and 17) upon which is mounted a lens or optical system 33 (Fig. 3) and lamps 34 for illuminating the original document, the lens 33 projecting the image of said document onto the photographic material. Means is provided to move the scanning carriage 32 back and forth across the original document for the purpose of scanning it incrementally line by line.

The several parts of the machine are mounted on a base 35 (Figs. 1, 2, 3, and 4) which is sup- A main drive shaft 31'(Figs. 2 and 3) provided to operate the several instrumentalities is driven by a motor 38 (Figs. 2 and 16) through a belt 39, pulleys 40 and 4I, a belt 42 and a pulley 43 through a gear reduction encased in a housing 44. The shaft 31 is mounted in the housing 44 and bearings 45 and 46 (Fig. 3) secured to the under side of the base 35.

Document carriage The carriage in which the original document 30 is mounted includes a pair of upright frames 41 and 48 (Figs. 1, 3, and 4) secured to the base 35. Between

frames

41 and 48 is rotatably mounted a shaft 49 having secured thereto at each end, just inside frames 41 and 48, feed rollers 50. These rollers are provided with radially extending pins which cooperate with holes along the edges of the document 30 (Fig. l) to aline and advance the document.

For the purpose of feeding the document 3'! there is secured to the right-hand end of the shaft 49 (Fig. 4) a ratchet 52 (Fig. 5) with which a feed pawl 53 cooperates. The pawl 53 is mounted on a lever 54 pivoted on the shaft 49. A link 55 connects one arm of the lever 54 to one arm of a lever 55 pivotally supported on the frame 48 and having its other arm connected by a rod 51 to an arm 58 pivotally mounted on a shaft 59. The shaft 59 is supported in brackets 66 and 61 (Figs. 3 and 5) secured to the under side of the base 35. A hub 68 (Fig. 5) rigidly connects the arm 58 to a cam follower 59 which at its free end carries a roller cooperating with a cam 1| secured on the shaft 31. A spring 12 (Fig. 4) presses the roller 10 into contact with the periphery of the cam 1 I.

Referring to Fig. 4, rotation of the shaft 31 and the cam 1| in the direction indicated by the ar row,

rocks arms

69 and 50 counterclockwise which movement through the rod 51 (Fig. 5) rocks the lever 56 clockwise. This lever through the link 55 rocks the lever 54 counterclockwise to retract the feed pawl 53. When the high spot of the cam 1| passes the roller 10 the spring 12 reverses the movement of the linkage just described and rocks the lever 54 clockwise to advance the document 30 (Figs. 1 and 3) one line space.

A roller carried by a spring pressed retaining pawl 13 (Fig. 5) cooperates with a notched disc 14 secured to the ratchet 52 to aline and yieldingly hold the shaft 49 and consequentially the document 30 in position. Knurled knobs (Fig. 4) are afiixed to the ends of shaft 49 for the purpose of manually advancing the document.

In order to hold the paper in close contact with the feed rollers 50 and with a roller 19, a shaft 11 (Figs. 3 and 4) carrying a roller 19 at each end is provided. The rollers 10 are provided with annular grooves to clear the feed pins 5| in rollers 50. A roller 19 also mounted on the shaft 11 cooperates with roller I9. The shaft 11 is supported between two arms 00 which are pivotally supported on studs projecting inwardly from the

frames

41 and 48. The arms 00 may be retated manually to facilitate insertion of new documents, stops 0| being provided on the

frames

41 and 43 to limit their movement.

It may be stated here that the original document may take the form of a letter or similar size sheet or it may be in the form of a comparatively long strip of paper a roll of which is indicated at 82 (Fig. 17), After passing the sensing aperture the paper may be wound on a take-up roll 83. A belt 94 passes around a pulley 95 fast on the feed shaft 49 and a pulley 96 on the takeup roll to drive the latter. The supply roll 92 and take-up roll 83 are suitably supported between brackets 81 (only one of which is shown) secured to and projecting from the

frames

41 and 48.

Film carriage The sensitized film upon which the image from the original document is projected and recorded in negative form may be provided in the form of a roll 89 (Fig. 3) supported within a light casing 3| in such a manner that it is easily unrolled and fed past the lens 33 by feed means to be de scribed later.

The casing 3| is mounted on a base plate 39 which is secured to cross

bars

90 and 9| extending transversely of the machine. The under side of the bar 90 is provided with a longitudinal groove which embraces and rests upon antifriction balls 92 which in turn rest in a groove in the upper edge of a rail 93 secured to the base 35 of the machine. The bar 9| also is mounted on anti-friction balls supported in a grooved rail 94 secured to the base 35. Retaining clips 95 secured to the

rails

93 and 94 have their upper ends bent over the

bars

90 and 9| to prevent displacement of the film carriage but permit movement of the carriage along the

rails

93 and 94. The purpose of and means for effecting this movement will be set forth later.

When the film strip 96 is unwound from and leaves the roll 89 it passes around a pair of feed rollers 91 secured to a shaft 90 supported in the side plate of the casing 3|. Tension rollers 99 carried on arms I00 mounted on a shaft I06 are urged by springs I01 against the feed rollers 91 to provide sufficient tension for feeding the film. The film passes between a guide plate I09 and a cross bar I09 suitably supported in the casing 3|, thence upward through a chute IIO, between a roller III and a deflector plate II2 where it is coiled as indicated at 3 in a receiving box 4. The roller III is mounted on a shaft ||5 supported in the end pieces of the film receiver H4.

The film receiver H4 is detachably held in position on top of the film supply chamber 3| by two spring retainers IIG, (Fig. 2) one of which is disposed on each end of the chamber 3| and which retainers cooperate with pins projecting from the end pieces of the receiver. When in this position the receiver II4 forms a light tight connection with the film chamber 3|.

In order to introduce the leading end of the film between the feed rollers 91 (Fig. 3) and the tension rollers 99, the end of the shaft I06 prooperation of the feed rollers 91.

Jects beyond the casing 3I and has secured thereto an arm III (Fig. 2). By moving this arm counterclockwise the operator may rotate the shaft I06 in the same direction to move the rollers 93 out of contact with the feed roller.

Referring now to Fig. 6, a feed pawl II8 carried on one of a lever II9 pivotally mounted on the shaft 98 cooperates with a ratchet wheel I20 secured to the shaft 98. A link I2I connects the other end of the lever II9 to the free end of an arm I22 secured to the shaft 59 (see also Fig. 7). A bell crank I23 also secured to the shaft 59 carries an anti-friction roller I24 which is maintained in cooperative relation with a cam I25 faston the shaft 31 by a spring I26 having one end fast to the bell crank I23.

As the cam I25 (Fig. 7) rotates in a clockwise direction the spring I26 rocks the bell crank I23, shaft 59 and arm I22 also clockwise (Fig. '7) lowering the link I2I. This rocks the lever II9 counterclockwise (Fig. 6) to advance the ratchet I20, shaft 98 and feed roller 91' one step. In this manner the film is advanced one line space. Further rotation of the cam I25 reverses the direction of movement of the train of mechanism just described retracting the feed pawl 8 one step.

A spring pressed retaining finger I2'I (Fig. 2) cooperates with a serrated disc I28 fast on the opposite end of shaft 98 to aline the feed rollers 91 and consequently the film. A knob I29 secured to the shaft 98 adjacent the ratchet I20 (see Figs. 1 and 6) permits manual While means for feeding a roll of film, step by step, have been disclosed, it is to be understood that this is merely indicative of any equivalent means for feeding sensitized material, step by step, one line space at a time.

Film severing means After an indeterminate length of film has been exposed and rolled into the receiver II4, it may be desirable to sever the exposed film from the supply roll in order that the receiver may be removed to a dark room, where the length of exposed film may be removed and processed. To this end a'knife I30 (Figs. 3-, 20, and 21) carried by a block I3I is provided. The block I3I is slidable on a tube I32 which is rotatably sup- I33 to the block I3I and knife blade I30.

In order to sever the film the operator grasps the knob I36 and draws the rod I toward the right (Fig. 20). Through the connection I3I- I38 the block I3I and the knife blade I30 are moved in the same direction, the knife blade I30 sliding along the guide I08 and block I09 severs the film 96 (Fig. 21). The knife is restored to the position shown in Fig. 20 before the film is advanced.

Optical system In order to produce a photographic. negative of the typed matter it is necessary to project the characters of the original copy 30 (Fig. 3)

onto the light sensitive film 96. To this end an optical or lens system 33 is provided. The optical system includes a tube in which are mounted lenses I39 and I40 (Fig. 19). Between the lenses is mounted a masking disc I46. A second masking disc I41 is fixed to the right-hand end of the tube. Adjacent the latter disc is a shutter I48 slidably mounted in a. sleeve I49 forming part of the lens mounting. This shutter is for the purpose of closing the aperture during the return movement of the scanning carriage. The lamps 34 (Fig. 3) mounted on a bracket I50 secured to the carriage 32, illuminate the original document 30 (Fig. 19) whose characters are projected by the lens system onto the film 96 to produce the photographic negative.

Referring now to Figure 13, the carriage 32 is mounted to travel on a bar I5I supported by uprights I52 secured to the base 35. The carriage is provided with three knife edged rollers I53, two of which travel in a groove along the upper edge of the bar I5I, the remaining roller I53 travelling along a groove in the bottom edge of the bar I5I. Thus the carriage 32 and the optical system 33 are maintained in accurate alignment and at the same time may travel forth and back along the bar I5I.

In order to maintain a more accurate alignment of the optical system the lower roller I53 is mounted on an arm I54 (Fig. 13) which is pivotally supported on the carriage. A spring I55 tensioned between the carriage 32 and the free end of the arm I54 presses the rollers I53 into their respective grooves.

The scanning or lens carriage is operated by a cam I56 (Fig. 13) on the drive shaft 31. This cam cooperates with a roller I51 on an arm I58 fre on a rock shaft I59 mounted in the bracket 45 and in a. bracket I60 secured to the base 35. A spring I6I having one of its ends fast to the end of an arm I62 integral with the arm I58 presses the roller I51 into contact with the periphery of cam I56.

As the cam I56 rotates in the direction indicated by the arrow the spring I6I rocks the arm I 58 clockwise (Fig. 13) shifting the scanning carriage 32 toward the right until the low portion of the cam I56 is under the roller I51 at which point the carriage 32 is in its extreme righthand position. Continued rotation of the cam I56 reverses the direction of movement of the arm I58 and of the scanning carriage 32, moving the carriage from right to left (Fig. 13). It is during the latter movement, that is, from right to left as viewed in Fig. 13; that the scanning occurs.

It was stated above that the shutter I48 (Figs. 13 and 19) is provided to close the lens aperture during the return movement of the carriage 32. The shutter I48 is slidably mounted in the sleeve I49 and as the carriage traveling leftward (Fig. 13) on its scanning stroke approaches the limit of its movement, the end of the shutter I48 strikes a stop I63, adjustably mounted on a plate I64 secured to the bar I5I, stopping the leftward movement of the shutter. The carriage 32 travels a short distance after the shutter I 48 is stopped moving the aperture I 65 in the shutter out of line with the aperture I66 in the masking disc I41.

The shutter remains in this position (Fig. 13) during the return movement of the carriage and until the carriage approaches the right-hand limit of its travel at which time the shutter I48 ,strikes a stop member I61 adjustably supported on a plate I68 secured to the bar I5I, shifting the shutter I48 to bring the aperture I65 into alignment with the lens aperture I66. As the carriage 32 proceeds on its scanning stroke the line is scanned and reproduced in negative form on the film 96.

An elongated opening is provided in the casing 3i of the film carriage (Fig. 3) through which projects the reduced end of the sleeve I49 as the scanning carriage 32 is shifted from side to side during operation of the machine. In order to protect the unexposed portion of the film 96 against exposure to extraneous light a slide I69 is provided. This slide is of suflicient length so that the opening is covered at all times regardless of the position of the scanning carriage. The slide I69 is mounted in grooves formed by plates I secured to the casing 3| and by the casing itself. The reduced end of the sleeve I49 projects through the slide I69 so that the reciprocatory movement of the scanning carriage is transmitted to the slide, which thereby travels back and forth with the carriage 32.

Sensing for justification Figure illustrates three lines of typed matter before and after justification. It is an object of the instant invention not only to produce automatically a photographic negative of typed matter but also to justify each line so that all lines are of equal length on the negative. Reference to Fig. 15 discloses that there is printed at the end of each line an opaque spot indicated at Hi. This spot is sensed photoelectrically in order to automatically determine the extent of justification required for each line. Justifica tion is then automatically effected by moving the film carriage in the opposite direction to and in synchronism with the scanning carriage on the scanning stroke whereby there is produced a photographic copy or replica whose lines are uniformly justified throughout their respective extents. The several instrumentalities provided to accomplish this justification will be described later.

A pressure plate I12 (Figs. 3 and 4) is pivoted on arm I13 depending from a bar I14 which in turn is pivotally supported in brackets I15 secured to the side members 41 and 48 (see also Fig. 5). A spring I16 having one of its ends fast on an arm I11 secured to one end of bar I14 presses the plate I12 into contact with the orig inal document 30. An elongated opening I18 in plate I12 exposes a ingle line of typed matter the image of which is to be projected by the lens 33 onto the film as the scanning carriage sweeps from right to left. At its left-hand end (Fig. 4) the opening I18 is enlarged at I19 to expose the next lower line. Directly to the right of the opening I19 (Fig. 3) a prism I80 is mounted in a housing I86 which housing is mounted on a condenser lens housing I81. A condenser I88 is mounted in the base within the housing I81. Just below the condenser I88 is located a light source I89 supported on a bracket I90 (Fig. 4) secured to the under side of the base 35. Also supported on the bracket I90 is a reflector I9I.

A photoelectric cell I92 (Fig. 3) is mounted in a housing I93 supported by the frames 41 and 48 (see also Figs. 4 and 1'1). The cell I92 lies opposite the prism I80so that light from the source I89 is projected through the condenser I88, and prism I80 which changes the direction of the light rays, to the cell I92. The opening I19 in the plate I12 coincides with a slot I94 (Fig. 18) in the casing I93. A slide I95 (Figs. 3, 4, and 18) located within the casing I93 opposite the prism I is pivoted at one end to an arm I96 (Figs. 4 and 5) pivoted on a stud I91 projecting from a bracket I98 secured to the base 35 of the machine. Secured to the other end of the slide I is a plate I99 having a disc 200 (Figs. 4 and 18) fast thereon. The disc 200 fits in the slot I94 and is adapted to reciprocal movement therein to support and guide the slide I95 I99.

The plate I99 is pressed into close contact with the inside surface of the casing I93 by two springs 20I (only one of which is shown) tensioned against two angle members 202 disposed one above and one below the plate I99.

Referring now to Figs. 4 and 5, a lever 208 pivoted on the stud I91 adjacent the arm I96 has secured to its upper end a formed member 204 embracing arm I96. The member 204 carries an adjusting screw 205 which serves to adjust the position of the slide I95I99. A link 208 connects the lower arm of the lever 208 to an arm 201 fast on the shaft 59 to which shaft, it will be remembered, is also fast the arm I23 (Fig. '1).

It was described above how upon rotation of the cam I25, the spring I26 rocked the arms I 23 and shaft 59 first clockwise and then counterclockwise to feed the film in order to bring an unexposed portion thereof into alignment with the optical system. Clockwise movement of the shaft 59 and arm 201, through the connection 206 rocks the lever 203 also clockwise (Fig. 4) at which movement a spring 208 tensioned between the slide I95 and a bracket 209 secured to the base 35 draws the slide I95I99 toward the right keeping the arm I96 in contact with the adjusting screw 205.

An aperture 2I0 (Figs. 4 and 18) is provided through the plate I99 and disc 200 through which rays of light from the source I89 is projected. the light passing through the condenser I88. prism I80, through the original document 30 to the photoelectric cell I92.

As the aperture 2I0 is moved from left to right (Fig. 4) the cell I92 is energized until the aperture coincides with the opaques spot I1I (Fig. 15), at which time the light rays reaching the cell I92 are interrupted deenergizing the cell. This deenergization controls a solenoid 2i I (Figs. 8 and 16) which controls mechanism presently to be described to determine the distance the film carriage is to be moved at the next scanning operation, that is, the amount the next line is to be justified.

The amount of justification required to bring all lines to the same length is therefore determined by the opaque spot I 1| at the end of the line. It has been found that this usually falls within a limit of eight character spaces with the exception of the last line of a paragraph which may be of any length. Accordingly any line whose spot I1I falls within the extent of eight character spaces of the right-hand end of the line will be lengthened an amount determined by the location of the spot I1I.

Justifying mechanism It has been previously stated that justification is effected by moving the film, upon which the image is being projected, laterally in the opposite direction to the scanning lens and in synchronism with the scanning movement of the scanning lens. The mechanism for so moving the film will now be described.

Referring to Fig. 3 it will be remembered that the film carriage 3| is mounted for lateral movement on the

rails

93 and 94. Projecting downwardly from the bottom of the carriage is a bracket 2|2 (Fig. 8) to which is connected a link 2|3, the other end of the link being connected to one arm of a lever 2. The lever 2|4 is pivotally supported on a bracket 2|5 secured to the base 35. The other arm of the lever 2|4 carries a stud 2|6 projecting through a vertical slot 2" in a slide 2l8 mounted to slide horizontally in a correction slide comprising a block 2|9 (Figs. 9 and 10) and a plate 22I. This block 2|9 is channeled to receive a guide bar 220 and the plate 22| (see also Fig. 11) is secured to the block 2|9. The guide bar 220 is mounted rigidly at its upper end on the bracket 2|5 and at its lower end is secured to the bracket I by screws 222 and spacing blocks 223 (Fig. 9).

A stud 224 (Figs. 9, 10 and 12) on the slide 2|8 projects into an open slot 225 in the face of an arm 226, the hub 221 of which is fast on the rock shaft I59. Referring now to Fig. 13 it was described above how the cam I56 oscillates the arm I58 to operate the scanning carriage. Fast on the shaft I59 adjacent the arm I58 is an arm 228 carrying an adjusting screw 229 bearing against a block 230 secured to the arm I58. A spring 236 attached to the shaft I59 by a pin 231 is provided to keep the screw 229 against the block 230 and to give the shaft its clockwise movement. The parts are shown in Fig. 13 at the end of the scanning movement. At this time the arm 226 (Fig. '12) is in the position indicated by dotted lines at 226. As the cam I56 (Fig. 13) now rotates, the spring |6| rocks the arm I58 clockwise to restore the scanning earriage and at the same time the spring 236 rocks the shaft I59 and arm 226 (Fig. 12) clockwise to the position shown in full lines in Fig. 12. It is this rocking movement of the arm 226 which operates the slide 2|8 (Fig. 8) and through the lever 2H and link 2|3 operates the film carriage for the purpose of justifying the typed lines. The movement of the film carriage-is therefore in synchronism with the movement of the scanning carriage. When the scanning carriage is being restored, that is, moved toward the right (Fig. 13) the arm I58 and the shaft I59 rock clockwise thus permitting a spring 23| to restore the film carriage toward the left (Fig. 8). With reference to Fig. 1, when the scanning carriage 32 moves in its scanning direction, that is,

toward the right, the film carriage moves toward a the left, consequently a length of film greater than the length of the typed line on the original 30 passes the lens in exactly the same time the lens is scanningthe line, as will now be described.

In the illustrative embodiment of the invention the length of the line may be increased from one to eight spaces depending on the length of the line. It will be recalled that the photoelectric cell I92 (Figs. 3 and 16) controls the energization of the solenoid 2 (Figs. 8 and 16) when the sensing aperture 2|0 (Fig. 18) coincides with the opaque spot |1I (Fig. 15), at the end of the. line. The solenoid 2 controls mechanism now to be described which determines the extent of movement of the film carriage at the next scanning and justifying cycle.

Adjacent to but spaced from the guide bar 220 (Figs. 9 and 10) is rigidly mounted a similar guide bar 238. A carrier slide comprising a channeled block 239 and a plate 240 secured the spots I1| across the power lines.

on the bar 238. A link 24| connects the carrier slide 239-240 to a pair of spaced arms 242 pivotally supported by a bracket 243 (Fig. 8) secured to the base 35. A roller 244 carried between the free ends of the arms 242 cooperates with a cam 245 fast on the drive shaft 31.-

Rotation of the cam 245 rocks the arms 242 first counterclockwise and then clockwise to raise and then lower the link 2 and the carrier slide 239-240.

Attached to the block 239 (Figs. 10 and 11) is a bar 246 provided with a shoulder 241 at its lower end normally below the lower end of one arm of a lever 248 pivotally supported on the plate-22I forming a part of the correction slide 2|9-22I. A link 249 connects the other arm of the lever 248 to one arm of a lever 250, the other arm of which-is pivotally connected to the armature of the solenoid 2| I. I

As the cam 245 raises the carrier slide 239-240, the shoulder 241 on the bar 246 (Fig. 11) carries the lever 248 and consequently the correction slide 2I9-22I together with the slide 2|8 therewith. This movement is in synchronism with the movement toward the right of the sensing slide I and the aperture 2|0 (Fig. 4). When, during this movement, the aperture 2|0 coincides with the spot "I the solenoid 2 is energized (in a manner to be later described). Energization of the solenoid 2|I rocks the lever 250 (Fig. 8) counterclockwise and through the link 249 rocks the lever 248 in the same direction, a nose 25| (Fig. 11) of the lever entering one of a plurality of notches 252 in the edge of a bar 253 secured to the guide bar 220. This disconnects the correction slide 2|9-22I from the carrier slide 239-240 and latches the correction slide in its selected position, the carrier slide continuing through its regular travel. The correction slide together with the slide 2|8 is thus raised a number of steps equal to the number of points or characters the line is to be justified, positioning the stud 224 on the slide 2|8 upwardly in the slot 225 in the arm 226 accordingly.

If the spot |1| (Fig. 15) is sensed in the three position, for instance, the solenoid 2 will be energized and the lever 248 operated to stop the correction slide 2|9-22I in the three position. This positions the stud 224 (Fig. 12)

in the corresponding position and upon operation of the arm 226, the slide 2|8 and lever 2|4 (Fig. 8) will be moved three points to shift the film carriage a like distance in justifying direction to effect lengthening of the scanned line three spaces.

Circuit diagram Referring to the circuitdiagram Fig. 16, current is supplied to the machine over

power lines

254 and 255.

Wires

256 and 251 connect the moto 38 and the light source I89 for sensing A manually operated switch 258 is provided to control the motor 38 and lamp I89. A pair of cam operated contacts GT2 are wired in series with the lamp I89. The contacts GT2 are timed to close, energizing the lamp I89 during the period of sensing the spot |1| (see Fig. 14) and to open at the end of the sensing stroke of the slide I95-I99 so that the photo-electric cell I92 will be inoperative on the return stroke.

Also connected across the

power lines

254 and 255 is the primary coil 259 of a transformer. A switch 260 in the line 255 provides a manual control of the transformer and amplifier circuits.

thereto is adapted to be vertically reciprocated g the cam contacts GT4 One coil-2H of the transformer secondary provides current of the proper voltage for the scanning lamps 24 (only one being indicated in Fig. 16). A secondary coil 282 supplies current for the filament of a full wave rectifier tube 243, the plate current for this tube being provided by a third secondary winding 294.

An amplifier including tubes 2" and 2" (Fig.

16) is controlled by the photo-electric, cell I92 to energize the relay coil 261 upon a current drop through the cell when the sensing aperture-2H1 (Figs. 4 and i8) encounters a spot I1I. Energization of the relay 291 closes its contacts 288 establishing a circuit from a tap at the center of secondary coil 2'2, wire 289, contacts 28!, wire 210, cam contacts CT4 which, referring toFig. 14, are closed at this time, solenoid 2I I, wire 218 to a tap at the center of secondary coil 294. The solenoid MI is thus energized for the purpose set forth above.

Closureokcontacts 26! also energizes a relay magnet 211 which closes its contacts 218 to estab lish a holding circuit for the solenoid 2I I. This holding circuit is necessary fo the reason that, whereas the relay magnet 261 is energized only for the brief time the spot I1I is between the aperture 2III and the cell I92, it is necessary to hold the solenoid energized for the duration of the scanning operation in order to hold the lever 248 (Fig. 11) in its latched position, thus holding the slide 2I8 in its adjusted position throughout the justifying period of the cycle. Shortly afte the scanning and justifying are completed open, deenergizing the solenoid 2II, whereupon a spring 219 (Fig. 11) disengages the lever 248 from the plate 253 and the correction slide 2I922I is restored by gravity to its lowermost position where it is stopped by the lever 248 striking the shoulder 241 on the bar 246. This occurs near the end of the cycle (Fig. 14) and the parts are in position to be again adjusted under the control of the sensing eye at the beginning of the next cycle.

Operation At the end of a cycle the several mechanisms are in substantially the following positions referring to the timing chart, Fig. 14: The scanning carriage 32 (Fig. 1) is in its right-hand position having first completed scanning a line of copy and has just commenced its restoring movement. The film carriage 3| has just completed its justifying movement and is starting its restoring movement. Both the carrier slide 239240 and the correction slide 2I5 22I (Fig. 9) are in their lower or home positions. During the first part of the cycle the scanning carriage 32 is restored toward the left (Fig. l) and toward the right as viewed in Fig. 4.

The film carriage 3I completes its restoring movement toward the right (Fig. 1) and toward the left as viewed in Fig. 8. During the first part of the cycle the mechanism illustrated in Fig. 6 operates to advance the film one line space to bring an unexposed portion in line with the lens 33. Also during the first part of the cycle the sensing eye 2) (Fig. 4) sweeps toward the right to sense the spot I" (Figs. 14 and 15) and in synchronism therewith the carrier slide 239-240 raises the correction slide 2I922I (Fig. 9) carrying therewith the slide 2I8 until such time as the sensing eye finds the spot I1I on the line below the last scanned line. At this time the relay magnet 261 (Fig. 16) is energized and since the contacts GT4 are closed at this time the solenoid 2II operates the lever 24. (Fig. ii) to arrest the correctionsllde in the position deter- ,mined by the spot "I.

Just after the sensing eye completes its sensing stroke the mechanism shown in Fig. 5 oper ates to advance the original copy 29 one line space to bring the line Just sensed by the sensing eye 2Il (Fig. 4) to the position in line with the opening I19 in the plate I12. The contacts GT2 open at the end of the sensing stroke to deenergize the lamp Ill (Figs. 4 and 16).

At the completion of its restoring movement the scanning carriage begins. its scanning stroke and at the same time and in synchronism therewith the film carriage begins its justifying movement. The scanning stroke is fixed, that is, it is always the same length scanning a full line. The length of the justifying stroke of the film carriage, however, may vary from one to eight points depending on the length of the line scanned, or, stated otherwise, depending upon the position at which the spot "I is sensed. It is to be understood that no matter what distance the film carriage travels, whether one, eight or an intermediate number of spaces, the travel extends for the full duration of the scanning stroke so that the image of the scanned line projected on the film will be lengthened from one to eight spaces.

At the end of the scanning movement the contacts CT4 are opened deenergizing the solenoid 2H and permitting the correction slide to restore quickly to its normal position in preparation for the next setting up movement of the carrier slide.

There has been described a device for producing automatically photographic negatives of typed matter whereon the lines may be lengthened from one to eight spaces to a predetermined length. It is obvious that by making minor mechanical changes to effect a movement of the film carriage during the scanning movement in the same direction as the scanning carriage the lines may be shortened one to eight spaces to a predetermined length.

Modified form Figs. 8a, 9a and 12a illustrate a modification of certain of the mechanical structure to accomplish justification of lines in either or both directions, that is, lengthening certain lines and shortening other lines to a predetermined intermediate length. Comparing Figs. 9 and 9a discloses that the arm 226 has been altered so that in Fig. 9a it extends equal distances above and below the shaft I59. Also the slide 2I8 has been relocated in the correction slide to bring the stud 224 four spaces (Fig. 12a) below the center line of the shaft I59. It may be noted that the lever 2I4 (Fig. 8a) has been lengthened to accommodate the lower normal position of the slide 2I8, also that link 2I3 has been lengthened. With the parts in their normal position the film carriage may be moved either to right or left.

Referring now to Fig. 81) let it be assumed that the sensing eye on aperture 2Il (Fig. 4) is sensing line 5 as indexed at the left of Fig. 8b. The sensing eye will have traveled four spaces before the spot I1I interrupts the ray of light reaching the photo-electric cell I92. Also the carrier slide 239-249 (Fig. 9a) and the correction slide 2I9-22I will have traveled upwardly four spaces when the cell I92 is deenergized and the solenoid operates to disconnect the correction slide from the carrier slide and latch it in the 2,261,538 selected position. Fig. 12a discloses that the stud 224 will at this time be in alignment with the shaft I59 with the result that when the arm 228 is rocked to the position indicated by dotted lines the slide 8 remains in its normal position and the film carriage does not move. I Line 5,

therefore, is not justified but is reproduced in negative form on the film the same length as the original copy.

It line I (Fig. 8b) is being sensed the sensing eye travels the full eight steps before it encounters the spot III. In this case the stud 224 (Fig. 12a) is raised eight steps to the position marked 4 above the 'centerline of shaft I59. When the arm 226 is rocked counterclockwise the slide M8 is drawn toward the left moving the film carriage toward the right (Fig. 8a) and toward the left as viewed in Fig. 1. This is contrary to the direction of scanning and results in the line being lengthened four spaces to the vertical line marked (Fig. 8b).

Consider now that line 9 (Fig. 8b) is being sensed to determine the amount of justification required. The sensing eye 210 immediately encounters the spot I'll at the end of this line causing the lever 248 to be operated to disconnect the correction slide 2|9--22l in its lowermost or normal position, which is, four spaces below the center-line of shaft I59. Now, when the arm 226 is rocked counter-clockwise the slide H8 is thrust toward the right moving the film carriage toward the left (Fig. 8a) and toward the right as viewed in Fig. 1 which is the direction the scanning carriage travels when scanning the copy. The result is that, since the length of film traversed by the lens is less than the length of the line scanned by four spaces, the line reproduced on the film will be shortened four spaces to the vertical line marked 0 in Fig. 8b.

Thus all lines whether longer or shorter than the intermediate position 0" are shortened or lengthened to a predetermined intermediate length.

While there has been shown and described and pointed out the fundamental novel features of the invention, it will be understood that various omissions and substitutions and changes in the form and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention. It is the intention, therefore, to be limited only as indicated by the scope of the following claims.

What is claimed is:

1. In a machine of the class described, the combination of a copy having non-justified lines thereon, means to support a light sensitive material, an image forming optical system, means to move the optical system transversely of the I copy and the light sensitive material to scan a line of copy and to cause said optical system to project an image of the scanned line onto the light sensitive material, and means to move the light sensitive material to change the length of the image received by said light sensitive material.

2. In a machine of the class described, the combination of a copy having non-justified lines thereon, means to support a light sensitive material, an image forming optical system, means to move the optical system transversely of the copy to scan a line of copy and to cause said optical system to project an image of the scanned line onto the light sensitive material, and means to move the light sensitive material during the movement-of the optical system to change the length of the image received by the light sensitive material to a predetermined length.

3. In a machine of the class described, the combination of a copy having non-justified lines thereon, means to support a light sensitive material; an optical system to scan the copy line by line and to project images of the scanned lines onto the light sensitive material, operating means to move the optical system the length of a line of copy, sensing means to sense the copy lines, and means controlled by the sensing means to move the light sensitive material during the scanning to alter the length of the image received by the light sensitive material.

4. In a machine of the class described, the combination of a copy bearing non-justified lines, means to support a light sensitive material, an image forming optical system, means to move the optical system the length of a non-justifled line to project an image of said line onto the light sensitive material, sensing means to sense the length of a non-justified line, and means controlled by the sensing means to move the light sensitive material to modify the length of the image received by said light sensitive material an extent determined by the length of the nonjustified line.

5. In a machine of the class described, the combination of a copy bearing non-justified lines, means to advance the copy line by line, means to support a light sensitive material, means to advance the light sensitive material, an image forming optical system, means to move the optical system the length of the non-justified lines to project images of the lines onto the light sensitive material, means to successively sense the length of the non-justified lines, and means controlled by the sensing means to move the light sensitive material to increase or decrease the lengths of the images received by the light sensitive material to reproduce all lines on said material of equal length.

6. In a machine of the class described, the

combination of a copy bearing non-justified lines, means to support a light sensitive material, an image forming optical system, means to move the optical system the length of a line of copy to project an image of said line onto the light sensitive material, means to move the light sensitive material to modify the length of the image received by said material, means to sense the length of a non-justified line of copy, and means controlled by the sensing means to determine the direction of movement of said light sensitive material.

7. In a machine of the class described, the combination of a copy bearing non-justified lines, means to support a light sensitive material, an image forming optical system, means to move the optical system the length of a line of copy to project an image of said line onto the light sensitive material, means to move the light sensitive material to modify the length of the image received by said material, sensing means to sense the length of a non-justified line of copy, and means controlled by the sensing means to determine the extent of movement of said light sensitive material.

8. In a machine of the class described, the combination of a copy bearing non-justified lines, means to support a light sensitive material, an image forming optical system, means to move the optical system to cause said optical system to light sensitive material, and means efiective during the projection oi the image to eilect a relative movement between the copy and the light sensitive material to modify the length of the image received by the light sensitive material.

9. In a cyclically operable machine of the class described, the combination of a copy bearing non-instilled lines, means to support a light sensitive material, an image forming optical systern to scan a line of cpy,-sensing means to sense the length of a line of copy at one cycle of operation, means to feed the copy to advance the sensed line from the position wherein said line was sensed to scanning position, means to move the optical system at the next cycle following the sensing cycle the length of the sensed line to project an image of said line onto the light sensitive material, means to move the light sensitive material to modify the length of the image received by said light sensitive material, and scttable means controlled by the sensing means to determine the direction of movement of the light sensitive material.

10. In a cyclically operable machine of the class described, the combination of a copy bearing non-justified lines, means to support a light sensitive material, an optical system to scan a non-instilled line and to project an image oi said line onto the light sensitive material, sensing means to sense the end of a non-justiiled line at one cycle of operation, means to advance the copy line from sensing position to scanning position, means to move the optical system at the next cycle the length of the line, scttable means controlled by the sensing means, and means controlled by said settable means to move the light sensitive material in a direction and to an extent determined by the length of the non-justified line to bring the image of said line received by the light sensitive material to a predetermined length.

11. In a machine of the class described, the combination of a copy bearing non-Justified lines, means to support a light sensitive material, an image forming optical system, operating means to impart a scanning stroke and a restoring stroke to the optical system to project an image of a non-Justified line onto the light sensitive material, a shutter for the optical system, and means to automatically open the shutter at the end of a restoring stroke and to close said shutter at the end of a scanning stroke said shutter remaining open during the scanning stroke.

12. In a machine of the class described, the combination of a copy bearing non-justified lines, means to support a light sensitive material, an image forming optical system, means to reciprocate the optical system the length of a nonthe operating means and the support means, sensing means to sense a non-justified line, and means controlled by the sensing means to adjust the connection to determine the extent of movement of the support means.

14. In a machine of the class described, the combination of a copy bearing non-iustiiied lines, means to support a light sensitive material, movable means to scan the copy line by line and to form and project successively, images of said lines onto the sensitive material, sensing means to sense the lines, and diflerentially scttable means controllable by the sensing means to move the sensitive material in a direction and to an extent determined by the length of the sensed lines to change the lengths of the images received by the sensitive material to a predetermined length.

15. In a machine of the class described, the combination of a copy bearing non-instilled lines, means to support a light sensitive material, means to successively sense the ends of lines of copy, means to successively scan nonjustiiied lines of copy and to succesively project images of said scanned lines onto the sensitive material, means to advance the copy line by line from sensing position to scanning position, means to advance the light sensitive material, means to move the sensitive material laterally while a line of copy is being scanned, and means controlled by the sensing means to determine the direction and extent 0! said lateral movement to bring the images received by the sensitive material to a predetermined length.

16. In a machine of the class described, the combination of a copy bearing non-Justiiled lines, means to support a light sensitive material, an image forming optical system, means to move the optical system to scan a non-justifled line and to project an image of said line onto the sensitive material, means to sense the number of spaces a non-justified line is shorter or longer than a predetermined length, means to move the light sensitive material synchronously with the movement of the optical system to change the length 0! the image received by said sensitive material, and means controlled by the sensing means to determine the direction and extent of movement of the sensitive material.

17. In a machine of the class described, the combination of a copy bearing non-justified lines, means to support a light sensitive matejustified line and back to scan said line and to project an image of said line onto the light sensitive material, means to move the light sensitive material relative to the copy to control the length of the image received by the light sensitive material, photo-electric sensing means to sense the non-justified line, and means controlled by the sensing means to determine the extent of movement of the light sensitive material.

13. In a machine of the class described, the combination oi a copy bearing non-justified lines, means to support a light sensitive material, an image forming optical system, means cooperating with said system to produce scanning of a line and to project an image of said line onto the light sensitive material, operating means to move the support means, an adjustable connection between rial, means to scan a line of copy to project an image oi the scanned line onto the sensitive material, a slide provided with a sensing aperture, means to actuate the slide to sense the end of a line of copy, operating means including a settable slide to move the sensitive material to alter the length of the image received by the sensitive material, a drive member cooperating with the scttable slide, actuating means to move the scttable slide relative to the drive members and a latch controlled by the sensing means disconnect the settable slide from the actuating means and to latch said slide in its selected posltion.

l8. In a machine of the class described, the combination of means to support a light sensitive material, means for scanning a line oi. copy and proJecting an image of said line onto the light sensitive material, operating means for moving the sensitive material to modiiy the length of the image received by said material a light source, a photo-electric cell, a slide pr ovlded with a sensing aperture for sensing the end of a line of copy, and means controlled by the photo-electric cell when the aperture encounters the end of a line for differentially adjusting the operating means according to the length of the line sensed.

19. In a machine of the class described, the combination of means to support a light sensitive material, means for scanning non-justified lines of copy and projecting images of said lines onto the light sensitive material, photo-electric sensing means for sensing the number of spaces lines of copy are shorter or longer than a predetermined length, operating means including a settable slide for moving the light sensitive material to change the length of the image received, a drive member for the operating means, and differential means controlled by the sensing means for setting the slide relative to the drive member an extent commensurate to the number of spaces the sensed line is shorter or longer than the predetermined length.

20. In a machine of the class described, the combination of means to support a light sensitive material, means including movable means, to automatically scan non-justified lines of copy and to project images of said lines onto the light sensitive material, photoelectric means to automatically measure the amount of justification necessary, and automatic means controlled by the photo-electric means to variably move the light sensitive material during scanning to effect justification.

21. In a machine of the class described, the combination of means to support a light sensitive material, means including image forming optical means to automatically scan non-justified lines of copy and to project images of the scanned lines onto the light sensitive material, means including photo-electric means to automatically determine the direction and extent of justification necessary, and means controlled by the photo-electric means to automatically move the light sensitive material in a direction and to an extent determined by the photo-electric means to effect justification.

22. In a machine of the class described, the combination of a copy bearing non-justified lines, means to support a light sensitive material, means including image forming optical means to scan the copy line by line and to project images of the lines onto the light sensitive material, means to sense the number of spaces a line of copy is shorter or longer than a predetermined length, operating means including a settable element to move the light sensitive material to alter the length of the image received by the sensitive material, drive means cooperating with the settable element, and means controlled by the sensing means to differentially position the settable element radially of the drive means to control the direction and extent of movement of the sensitive material.

23. In a machine of the class described, the combination of a copy bearing non-justified lines, means to support a light sensitive material, an image forming optical system, means to automatically impart scanning strokes of invariable extent to the optical system to cause said optical system to project images of successive lines of copy onto the sensitive material, and means automatically controllable according to the length of the scanned lines of copy to automatically move the sensitive material variable extents synchronously with the movement of the optical 7 system.

24. In a machine of the class described, the combination of a copy bearing a non-justified line of characters, means to support a light sensitive material, means including an image forming optical system to automatically project progressively images of said characters in the line on to the sensitive material, and means effective during the projection of the images to produce a relative movement between the copy and the light sensitive material to modify the length of the line of character images received by the light sensitive material.

25. In a device of the character described, means to support a copy having non-justified lines thereon, means to support a light sensitive material, scanning means for continuously scanning the respective individual lines and projecting images of said lines upon said material and thereby affecting said light sensitive material accordingly, means automatically determining the degree of justification required, and means controlled by said automatic means for producing a relative shifting of said respective supporting means whereby justification is produced.

26. In a device of the character described, means to support a copy having non-justified lines, means to support a light sensitive material, scanning means for progressively scanning the individual lines of the copy and projecting images of said lines upon said material, and means to cause relative shifting between said respective supporting means in a direction longitudinally of said lines, said shifting means being settable to determine the amount of said relative shifting.

27. In a device of the character described, means to support a copy having a plurality of rows of characters and means designating a point on each of said rows, means to support a light sensitive material, means for progressively and successively scanning said rows and designating means, and projecting images of said characters upon said material and means controlled by the scanning of each of said designating means for producing a relative shift between said respective support means to produce a justified replica of said rows of characters.

28. In a device of the character described, means to support a copy having non-justified lines, means to support a light sensitive material, scanning means for continuously scanning each line respectively on said copy and projecting images of said lines upon said material, and means eifective during scanning of each line to produce a relative readjustment between the spacing of at least two components of each line of copy and the spacing of at least two components of each replica of said respective lines to thereby produce justification of said copy.

29. In a device of the character described, means to support a copy having a plurality of non-justified lines thereon, means to support a light sensitive material, scanning means for scanning said lines individually and projecting images of said lines upon said material to affect said sensitive material accordingly and prescanning the next succeeding lines to determine the amount of justification required for said next line, and means controlled by said scanning means for producing a relative shifting of said supporting means during the scanning of said next line and in accordance with said determined amount.

30. In a device of the character described, means to support a copy having non-justified