B - Operations – Transporting – 41 – J
Patent
B - Operations, Transporting
41
J
340/206, 101/96.
B41J 2/275 (2006.01) B41J 2/265 (2006.01)
Patent
CA 1125087
Abstract of the Disclosure An impact print head for a matrix printer employs the usual set of wires slidably mounted in thc heæd which are selectively extended from the workin6 end of the head toward a platen by energizinR solenoid ictuators. However, in lieu of the usual solenoid strikers, retura springs therefor and print wire rcturn springs, a single sct of unitary ferromaRnetic sprinR arms connected directly to the print wircs and positioned opposite the solcnoid3 mounted in n unitarr solenoid frace assembly. Also a shunt ?e i8 mounted in the hoad and positioned on the opposite sldes of the spring arms from the solenoldJ. The shunt disk and frame asse0bly shnpe the nagnetic nux pattern fron cach ener6ized solenoid so that a maximum number of nux lines frou each solenoid intcrcept the associated spring arm to nttnin maximum dyrdlmic print rarge and efficiency. Higher print speed may bc nttained by preloading oach spring arE toward its associated s01cnoid and substituting for the shunt disk, a set of perranent ma6nets positioned on the uppoflite sides of the spring are, from their solcnoids. m eir magnotic ficld strengths are such as to overcone the self-biaueu of the associated Jpring arms so that oach sprinf arm , whcn quiescent, i8 spaced rnn its solcriid and contains appre_ ciable yotcntlal enera . whcn cner6izod, each solenoid produoeu a field which iu opponite to and at least equal in strcn6th to that produced br the corresponding pcrnaneDe magnet so that the poteltlal energy storcd in thc associated sPrin6 arm is released as kinctic energy which helps to rapidly move the spring arr to pronpely cxtand the associated prunt wire.
324068
Digital Equipment Corporation
Smart & Biggar
LandOfFree
Impact print head does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Impact print head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impact print head will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-964613