Patent GB-808008-A (GB)
Title: Improvements in or relating to printing machines employing electrical facsimile reproduction
Inventor: GRUVER JOHN H
IPC: B41L45/00
Filed: 1956-08-27
Abstract: 808,008. Local copying by scanning. ADDRESSOGRAPH - MULTIGRAPH CORPORATION. Aug. 27, 1956, No. 26142/56. Class 40 (3). In a facsimile printing-machine arranged to produce on different areas of a record sheet identical multiple records of data carried on individual business or tabulating cards by the use of means operating to translate into electrical signals the required data on the business or tabulating cards in conjunction with a plurality of printing positions spaced in the machine in conformance with the spacing between the areas which are to receive the recorded impressions, each printing position includes a plurality of printing discs having developed thereon a plurality of circumferentially discontinuous printing edges. The business cards C carrying the information to be reproduced in multiple form are fed in sequence from a stack to a scanning arrangement, in which the lateral image of lines B2, C3, D4 on a card are reflected by a mirror 44 and apertured member 47 to a position traversed by two series of helical slots 50, 51, formed in a drum 25, which scan lines B2, D4 of the card shown in the second position. The lines A1, B2, C3 of the first card are similarly reflected by mirror 45 and apertured member 48 to a position traverse by the slots 50, 51 so that transverse scanning of the lines A1, C3 of the first card is effected. Four mirrors 60, disposed at 45 degrees to the axis of the drum, reflect the light beams to four photo-electric cells which pass their outputs to four electromagnetic vibrators provided at each of the three printing positions PS1, PS2, PS3. Each printer position is similar and comprises four hammer members 66 operated by electromagnetic units 65-1, 65-3 and 65-2, 65-4 disposed in pairs at diametrically-opposite positions in relation to four discs 64 each carrying four spirally arranged ridges E extending circumferentially through 90 degrees. The recording-sheet S which is guided upwardly in relation to the units 65-2, 65-4 and downwardly past the units 65-1, 65-3 is advanced by lateral perforations p engaged by a feeding sprocket (not shown) and has transverse and longitudinal perforations s to facilitate the division of the sheet into portions carrying the repeated information. The sheet S is guided over a rotatable roller 82, guide-bar 141, past the ridged discs and over a direction-changing bar 97, then downwardly at the inner surfaces of bars 140 and 100, beneath a roller 105 and between this roller and pressure discs 107 and hence to a feed sprocket (not shown) engaging the perforations p. Separate carbon ribbons CT are fed from three reels and to notched portions 83 of the roller 82, upwardly in contact with the inner surface of bar 141, over rollers 131, 132, 133 on a shaft 135 above the bar 97, downwardly in contact with recesses 143 of the bar 140 and to the recessed portions 103 of the bar 100 from which they are guided horizontally over two sets of three rollers to the take-up reels. The distances between the printing positions are determined by spacing sleeves 185, 186 which, together with the ridged discs 64, are mounted on a sleeve clamped to an extension of the shaft 55 driven by the motor 56 which also rotates the drum 25. The three pairs of magnetic units 65-1, 65-3 associated with the three printing positions are mounted on a casing portion 221 which can be rotated on a vertical axis from the open position shown in Fig. 2 to the closed position in which latch portions 236C of members 236 engage with pins on the fixed part 92 to locate the printing anvils 66 accurately in relation to the discs. The casing portions 92, 221 are clamped together by the engagement of a notched portion 228 of lever 226 with a headed stud 229 on the portion 221.