Patent GB-841046-A (GB)
Title: Photographic recording apparatus
IPC: G03B27/465
Filed: 1956-05-11
Abstract: 841,046. Photographic copying apparatus: EASTMAN KODAK CO. May 11, 1956 [May 13, 1955], No. 14716/56. Class 98(1) Apparatus for photographically recording in successive adjacent areas longitudinally of a strip of photographic material related information positioned in different photographing stations includes an exposure station for the photographic strip arranged in a plane perpendicular to the plane of the first photographing station and parallel to the plane of the second photographing station; driven means for intermittently advancing the photographic strip through the exposure station in a given increment to position successive portions of one area of film in the exposure station, and in a multiple of the given increment to. position successive portions of an adjacent area of the strip in the exposure station; optical means which normally forms an image of the information at the first photographing station on the successive portions of the first area of the photographic strip but which can be moved to an inoperative position; optical means normally in an inoperative position but movable to a position wherein it forms an image of the information at the second photographing position on the successive portions of the adjacent area of the strip; and means for operating concurrently the strip advancing means and the two optical means in accordance with the order in which the related information is to be recorded on the photographic strip material. As shown in Fig. 2, the apparatus is enclosed in a cabinet 10 and consists of three units: a base 11, a photographing section 12 and a film unit 13. The base 11 has a knee-hole for the operator and a treadle 15 by which a copy platen 16 in the photographing section 12 is operated. The images are photographed on a film F, which after processing is cut into elements 20, Fig. 5, each of which has a code area 21, a document image area 22, and an aperture 23. The code area accommodates lines of code, being copies of punched paper tapes prepared on a machine such as described in Specification 750,454 and presented as a light pattern in a device described in Specification 841,047 and indicated at 30 in Fig. 2. The device 30 constitutes one of the photographing stations; the copy platen 16 constitutes the other. When the operator actuates treadle 15, a glass plate is brought down on the document and a vacuum is applied to the perforated plate, on which the document rests. The document is illuminated by lamps 34. The film F is led from a supply reel 40, over rollers 44, 48 and through an exposure station 49 to a takeup reel 43. Film carriage. As shown in Figs. 3, 6 the body 55 of the film carriage 46 is connected to rods 57, 58 which pass through it and are connected at one end by a tie-bar 59. The rods are slidable in bearings 60, 61 and the free end of rod 58 is received by a sleeve 62 having a button 63 which is urged against the rod by a spring 64. A glass plate 50, over which the film F passes in the exposure station 49, has grooves communicating with a chamber 65 formed in body 55, and connected through a flexible hose and a solenoidoperated valve to a vacuum pump. Film perforator. As shown in Fig. 12, a link 77 is pivoted at 78 above chamber 65, and engages by one end 79 a-pin 80 on an arrriature 81 of a solenoid S8. The other end 83 engages a member 85 connected to the armature 86 of a solenoid S8A. Member 85, which slides on a fixed plate 87, has an L-shaped extension 88 which has a notch 89 to provide clearance for the film F and carries a punch 90 to form the perforations 23 in the film. A member 97 pivoted to plate 87 has spaced lugs 99 spring-urged towards plate 50. In the position shown, punch 90 has passed through the film F, which is engaged by lugs 99. When solenoid S8 is energised, link 77 is rocked and moves member 85 downwardly to withdraw the punch 90, after which an extension 88 of member 85 rocks member 97 to release the film F. Member 85 is retained in its lowermost position by a spring-pressed ball 93 engaging a notch 95, until solenoid S8A is energised to raise member 85. The lugs 99 grip the film before it is perforated, and member 85 is held in its uppermost position by the ball 93 engaging a notch 94. An opening 119 is provided in the plate 50, so that the punched-out piece of film is sucked out by the vacuum in chamber 65. If pre-perforated film is used, the punch 90 is replaced by a locating pin. Error-notching device. As shown in Fig. 13, a holding member 101 and an error-notching device 102 are pivoted on a common shaft 103 at the lower rear edge of the body 55 of the film carriage. Member 101 is spring-urged so that its lip 106 grips the film in the vicinity of an edge guide formed on plate 50, and has a lug 104 engaged by a spring-loaded plunger 105 to hold the member in film-gripping position. To position the film, the lug may be disengaged and the member 101 moved to release the film by a lever 108 (Fig. 12) pivoted to the body 55. The errornotching device carries a cutter 110 and a bearing surface 118 engageable by a solenoidactuated pin 112 in any position of the carriage. When an error in photographing has been made, pin 112 is actuated and cutter 110 makes a notch in the film at a point which, since the notching device moves with the carriage, is always the same distance from the aperture 23. An opening 120 in plate 50 enables the cut-out piece of film to be sucked into chamber 65. Optical system. The shutter consists of a plate 121, Fig. 6, slidable on a fixed plate 122 in which an aperture 51 is formed and actuated by a solenoid Sl through a bell-crank lever 123. A carrier 133 for projection lenses 129, 130 and mirrors 131, 132 (see also Fig. 3) is mounted below the plate 122. The carrier has three positions: in the first the light pattern presented by the device 30 is projected on to the film by mirror 139 (Fig. 2), mirrors 132, 131 and lens 129. In the other two positions the image of a document in platen 32 is projected by lens 130 on the two sides of the document image area 22 of the film F. Control means. A pulley 142, Fig. 3, is driven by an electric motor (not shown) through a belt 141. A gear 144 fast with pulley 142, and inter mediate gears 145, transmit the drive to a gear wheel 147; and a pulley 149 fast with gear wheel 147 drives a pulley 151 through a belt 150. Pulley 142 drives a shaft 153, through a clutch 154 which is disengaged when a detent operated by solenoid S4 engages a pin 158. At the same time, a brake (not shown) is applied to that part of the clutch which rotates with shaft 153. Cams C1, C2, C13, C14 mounted on shaft 153 operate contacts CS1, CS2, CS13, CS14. Gear wheel 147 drives a shaft 163 through a clutch 164 having oppositely-positioned pins 165 for engaging a detent actuated by a solenoid S5 to disengage the clutch. Shaft 163 carries a cam C3 with contacts CS3 and a worm 166 driving a shaft 167, which through further gears drives a shaft 171 carrying cams C5, C8 with contacts CS5, CS8, and a cam 172. Pulley 151 drives shaft 175 (see also Fig. 9) through a clutch 176, which has a pin 177 for engaging a detent actuated by a solenoid S3 to disengage the clutch. Shaft 175 is connected to a shaft 178, aligned therewith by a slip drive comprising a spring 179. Shaft 178 is keyed to a sleeve 182 which carries cams C6, C7, C9, C10, C11, C12 having contacts CS6, CS7, CS9, CS10, CS11, CS12, and also a cam 183, an indexing plate 184 and ratchets 185, 186. A pulley 181, also keyed to shaft 178, drives the film take-up reel through a belt 187. Shaft 153 carries a disc 190 to which an arm 193, Fig. 7, is eccentrically pivoted. A nose 194 of the arm 193 engages the teeth of ratchet 186, being held thereagainst by a spring 195. Similarly, shaft 163 has a disc 196 with an eccentrically pivoted arm 199 having a nose 200 engaging the teeth of ratchet 185-and held thereagainst by a spring 201. A bell-crank lever 202 pivoted at 203 has an arm 204 carrying a roller 205 engaging the eccentric on disc 190 and an, arm 206 pivotally connected to a link 207. Link 207 is mounted, together with a latch member 211, on a shaft 209 journalled in brackets on a wall' 140. A slot in latch 211 receives the edge of indexing plate 184 and a pin 213 mounted in the slot enters a notch 214 in the plate 184 to hold it in a zero position. To prevent the plate 184 and the ratchets 185, 186 from turing backward, a brake shoe 218 is pivoted to a bracket 219 which is in turn pivoted to the wail 140, the friction applied being adjusted by means of a screw 223. The cam 183 extends through the wall 140 as shown in Fig. 6, and engages a roller 224 on the film carriage 46. Since ten lines of code on the film F are equivalent to one image area, one tooth on what is called the "image" ratchet 185 is equivalent to ten teeth on the "code" ratchet 186. When clutch 154 is engaged to transmit drive to shaft 153, one revolution thereof moves "code" ratchet 186 through one tooth by action of arm 193, and with it ratchet 185 and cam 183, which latter moves the carriage 46,through a distance equal to the width of one line of sode. The film F moves with the carriage, since the punch 90 still engages the perforation 23 and pulley 181 is turned causing the same length of film to be wound on. When shaft 163 is driven through one revolution, arm 199 advances the "image" ratchet by one tooth, and the film carriage 46 and the film take-up reel are moved through ten times the distance moved through in the previous case. Through worm 166, shaft 171 and cam 172 (Fig. 3) are also turned. A follower roller 228 cooperates with cam 172 to move the carrier 133 for the lenses 129, 130 and the mirrors 131, 132. In the initial position of the cam, mirrors 131, 132 and lens 129 project lines of code from the device 30 on to the film. Every time clutch 154 is engaged, shaft 153 turns through one revolution and the film is mov