GB1229323A - - Google Patents

Abstract

1,229,323. Copying apparatus. W. ZINDLER [trading as LUMOPRINT ZINDLER K. G.]. April 17, 1968, [April 18, 1967], No.18095/68. Heading G2H. Copying apparatus in which sheets of copy paper are fed through the apparatus in response to the feeding of originals comprises first switch means operable by an original, a roller separating copy sheets from a stack and advancing them in turn to a position where they are ready for copying, the separating roller being halted by second switch means at the ready position, and an intermittentlyoperating transport element co-operating with a continuously-operating transport element to feed a copy sheet through the copying position and actuated by the first switch means. General Arrangements, Fig. 1. A withdrawing roller 3 intermittently acts on the top sheet 2 of a stack 1 of copy sheets to feed individual sheets to a processing position 51 in a copier. When sensor arm 23 is deflected by the leading edge of a sheet, the roller 3 stops rotating. An original, travelling in the direction of arrows 56 between feed rollers 54, 55 engages contacts 46, 47 and starts roller 11 rotating under the action of spring 20 until the circumferential part of the roller is in driving engagement with continuously rotating roller 10, thus feeding the copy sheet through position 51 to rollers 49, 50 in response to the passage of the original. Drive Mechanism. Main motor 166 drives rollers 54, 10 and 49 continuously through gear trains 169, 167 and 168 respectively. The withdrawing roller 3 is coupled to roller 10 by belt 27 through a coupling member (29), Fig. 2 (not shown) engaged by an electromagnet 33 which is in turn controlled by deflection of sensor arm 23 to disengage the drive. In its position of rest, roller 11 has a flattened periphery 17 facing roller 10 to allow passage of a sheet 2 through the nip, and is restrained by pawl 16 engaging notch 14 in roller 11; when the pawl is released, consequent on passage of original past contact 46 and 47 which energize electromagnet 25. Spring 20 causes the roller 11 to rotate so that the raised part of the roller contacts roller 10 in a driving engagement, and goes through one revolution until halted by the pawl 16 again. The roller 11 may be provided with a cam-operated switch (76, 77, 78), Fig. 4 (not shown) which prevents roller 3 from operating while roller 11 is still rotating, but other means can be employed so that they operate alternately. Other cams can be arranged to operate other functions in the copier automatically. Figs. 5 to 9, (not shown).