DE1264833B - Drum or chain high-speed printer - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

G06k

German KL: 42 m6 - 15/02

Number: 1264 833

File number: P 28300IX c / 42 m6

Filing date: November 24, 1961

Opening day: March 28, 1968

The invention relates to a drum or chain high-speed printer, in which the in a Print line continuously past successive printing points by means of printing types so controlled print hammers are operated that selected types of printing at predetermined Place the print line to be printed.

In optical display systems for reproducing digits, it is already known on a rotatable transparent drum to provide several successive rows of digits, which are preceded by a inside the drum arranged lamp rod are spanned. Here are the digits of this from The lamp rod spanned rows of digits in the direction of movement of the drum in such a way against one another offset that in each case only one digit of these rows of digits assigned to the common lamp rod is shown. In this known system, the display can thus be effected by a single one Organ, namely the lamp rod, successively at predetermined points on a display line through the Drum rotation position selected digits of the series of digits are recorded. This well-known system but is not easily transferable to mechanical high-speed printers.

It is an object of the invention to provide a high-speed chain or drum printer that is very capable simple and therefore cheap mechanical structure and its electrical control circuits circuit " are technically very simplified. '

Based on a drum or chain high-speed printer, this task is the one at the beginning mentioned type, according to the invention solved in that each a hammer two or three pressure points of the Print line spanned, the distance between the types of a type set spanned by a hammer Corresponds to the number of pressure points and the imprint in the associated hammer Printing points takes place one after the other, preferably in each printing point during the passage of one complete type set. In the case of chain printers, it is advantageous to have several similar successive Provide printing types in a number that spanned that of a hammer Number of print types. In this arrangement, it is not necessary, for example, that each print point is only printed after a complete set of types has been passed by. here could with appropriate training of the print hammers and their control circuits are also achieved that one of the successive similar Immediate print types even during the drum or chain high-speed printer

Applicant:

Potter Instrument Company, Inc.,

Plainview, N.Y. (V. St. A.).

Representative:

Dr.-Ing. F. Wuesthoff, Dipl.-Ing. G. Pulse

and Dipl.rChem. Dr. E. v. Bad luck man,

Patent Attorneys, 8000 Munich 90, Schweigerstr. 2

Named as inventor:

Carl I. Wasserman,. ■

Queens Village, N.Y. (V. StA.),

Claimed priority; ■

V. St. v. America November 25, 1960 (71640)

same passage of the type set printed by the same hammer ^{: s} is. In the case of drum printers, it is also advantageous if the printing types of type sets lying next to one another are each offset by one type height in the circumferential direction! Finally, it has proven to be advantageous if, according to a further development of the invention, a control device is provided by which the print hammers can be displaced along the print line synchronously with the rotary drum movement, such that the types of adjacent type sets assigned to a common hammer can be actuated alternately.

A high-speed printer designed according to the invention is much simpler and cheaper in construction than this has been possible up to now with the known printers of this type. The more pressure points through one and the same hammer can be spanned in the print line, the easier it is to build a high-speed printer according to the invention. When spanning, for example, three pressure points with Compared to known printers, a single hammer has two print hammers and the associated ones Control circuits superfluous. The overall structure is thus practically reduced by a third. This not only significantly reduces the manufacturing costs, but also the electrical ones Control circuits for the actuation of the print hammers are simplified in terms of circuitry and are

809 520/333

3 4

thus less prone to failure. Also the electrical power consumption for each font passing through the series of hammers a symbol constructed according to the invention receives a pulse on the drum 1, th high-speed printer is proportional to the reduction A reset contact 36, which with another tion of the required number of print hammers fixed contact 38 cooperates, transmitted smaller than with the usual high-speed printers, so that 5 a reset pulse to the also the necessary cooling devices and the like in counting device 41 so that the counting device can be supplied Power output can be set back much smaller. The phase relationship is twofold can be. see the reset contact 36 and the writing

The invention will be seen in the following with reference to characters on the drum is such that the counting machine explains drawings using exemplary embodiments io process with the beginning of the sequence of fonts. characters or at a predetermined point of this figure. 1 shows a sequence designed according to the invention uses. Thus, the counting result of the counting drum high-speed printer; device 41 at each point in time which font-F i g. Fig. 2 shows a character of the drum of the series of hammers against chain high-speed printer constructed in accordance with the invention; 15 survives. This the relevant character F i g. 3 shows a further exemplary embodiment for corresponding counting results of the counting device 41, the printing type arrangement on a high-speed chain, comparison stages 52, 53, 54 etc. via lines printer; . _. . 51, 50 and 49 supplied. It is a comparison stage F i g. 4 shows a type drum in combination for each character column on the type drum 1 with adjustable, several character columns 20 provided in each case. The spanning print hammers to be printed in the first column; Information is obtained from the associated information F i g. 5 illustrates details of a pressure input which can be used at source from via a line 61 in a memory 60 systems according to the invention, the pressure input with the comparison stage 52 by hammer construction. Lines 55, 56, 57, 58 and 59 are connected, wherein in Fig. 1 one recognizes a type drum 1, the 25 of each code digit of the character code that corresponds to type series 6, 7, 8 etc. to 9, 10 and 11 carries. indicates printing characters, a line is assigned to each type series contains a complete set of which is assigned. Correspondingly, those in the second character, ζ. B. the alphabet and the number column information to be printed a memory character from "1" to "9" and the zero character "0". 67 input via line 68; The memory 67 The series of types are offset from one another in such a way 30 is connected to the comparison stage 53 via code lines 62, or staggered, that each print hammer, for example the 63, 64, 65 and 66 is connected. In the same way hammer 13, only one character at a time will strike the information for the third column one can. If the hammer 13 entered three character memories 74 via a line 75 and spanned them, the characters are thus offset from one another to a comparison stage 54 via this memory so that they are on the current 35 lines 69, 70, 71, 72 and 73 connected. The circumference will take three different positions information for each additional column of characters and then repeat themselves, so that groups of. each stored and compared in a similar way. If three identical characters follow one another along the drum axis, there is a match between the counting result. In Fig. 1 only the first and the counting device 41 and the stored information, the last group with three against each other is determined, a pulse is shown over a set column of characters, but it should be noted that the corresponding line of the lines 76, 77, 78 etc. that the groups in between are arranged in a similar manner to the associated AND lock 30, 31, 32 etc. The drum 1 sits on a suitable dispensed. A second signal is this AND-Welle2, which is continuously rotated with the help of a motor 3 fed by a trip counter (43, 45, 47 etc.) via feed lines 4 and 5. The 45 fed; These trip counters are connected by lines them through the reset contact 36 on the ben is. The printing of the characters on lines 40 and 42 is supplied with a pulse. The first drum 1 on a suitable base, for example a 50 revolution of the drum 1, is carried out, with the help of a rotary pressure-sensitive paper 12, the level "1" of the counter unit is switched on. Lock 30 a signal on the hammers; the first hammer 13 and the last line 79 receives. If at this point a hammer 16 are shown in FIG. 1 indicated, and the signal is also received over the line 76, the interposed similar hammers are 55 indicating that a character in the first column of similar construction. According to FIG. 5, which is to be printed, the energy source 15 will emerge for further details, the hammer is switched on the hammer drive via the line 82 13 by a hammer electromagnet 14 beta- and via the OR circuit 20 and a line taken , to which the drive energy is supplied from an energy source 19, specifically as a function of the timing control 15. 60 through one of the segments 23 of the hammer steering wheel. The logic circuits can be formed in a wide variety of ways 22 that come into contact with a contact 26; in a useful arrangement so that at the right time for the printing process, pulses are used which generate a hammer control signal via the line 29 to which a timing wheel 34 generates the con-AND lock 30. In order to carry out the sequence of clock segments 35, which have to be repeated with a fixed 65 work steps: the storage contact 37 will work together. The information pulses which are generated in this way and which represent a character are input via a line 39 to a counting station, this character being supplied to the device 41 which is to be printed by the timing wheel 34 and which carries the stored information

to a positive comparison in the comparison stage 52; Furthermore, the AND lock 30 is supplied with a signal indicating this fact. Since the trigger level "1" or the stage 43 is switched on, the AND lock 30 receives a second signal and the printing process is completed when a time-controlled trigger signal is fed via the line 29 to which the AND lock responds via line 82 to actuate hammer drive 15.

disk 108 is performed. The cam slot 110 is shaped in such a way that the rod 100 is moved to the left during half a revolution of the cam disk 108 in order to move the hammer into the position shown in FIG. 4 with full

If not, so that the length of the belt or the chain can be smaller than in the arrangement according to Fig. 2.

F i g. 4 shows a further modification in which the type drum 95 bears characters 96 which are arranged in pairs in mutually offset columns. The drum 95 sits on a shaft 101 and is continuously rotated by a motor 102 fed via lines 103 and 104. the

Similar sequences of work steps are carried out in all io print hammers 97, 98 , etc. to 99 , each spanning the remaining character columns of the drum 1. two columns of characters and are adjusted with every second rotation of the drum 95 by the width of two with the next rotation of the timing wheel 34, a rear column sent via the contact 36 is adjusted. The print hammers are connected to the trigger counter unit with an actuating pulse in order to switch on the second rod 100 , which carries a pin 109 , stage 45, which feeds a curve signal to the AND lock 31 via the line 80 in a curve slot 110 . The trigger pulse
of the hammer pulse tone wheel 22 is fed to the line 28 via the contact 25. The angular distance
between contacts 25 and 26 is the same

how to bring the stalk spacing between the text lines shown position, and markers in columns 6 and 7, etc. Three times at the end of the other half of each revolution, the hammers that come together and are fed to the AND lock 31 are turned to the right in the signals with dashed lines are brought as a pressure command via line 83, lines indicated position. The curve of the OR circuit 20 and the line 19 to the disk 108 is fed in the course of four revolutions of the hammer drive 15 so that the hammer 13 rotates 25 of the drum 95 once; for this purpose prints a predetermined character in column 7. a gear 105 is provided on the shaft 101. In the same way, characters in all other are meshed with a gear 106 which is printed on a column; in the third column z. B. a connected to the cam 108 shaft 107 characters are printed when the AND lock 32 is activated. During the first two revolutions of the will, and thus, through a trigger signal of the con- 30 drum 95 of the hammer 97, the two clock 24, via the line 27, the trigger level 47, the first character column printed, and during which the line 81 and the output line 84 is fed to the third and the fourth revolution is carried out, printing the third and fourth column of characters.

F i g. 2 illustrates the possible use of F i g. 5 shows further details of a suitable one

of printing hammer assembly spanning multiple columns of characters for use with the hammers in a system in which the systems described in writing. One recognizes in an end mark on a band or a chain along view a typical type drum 95 is arranged with a raised line which is parallel to the with characters 96. The print hammer 97 runs at 112 print hammers in alignment. Rotatably mounted, and it is supported by a chain or a belt 117, the spring 111 attached to the frame 113 runs in its rest position via wheels 118 and 119 , one of which is guided back. An electromagnet 114, the energy drive wheel can act, while the other can be fed only via lines 115 and 116 , borrowed acts as a deflection wheel, characters 120, 121, can be switched on to the lower end of 122, 123 etc. to 128 , each several times to pull hammer 97 backwards, so that the are present, the number of repetitions 45 hammer head is one of the characters 96 on a suitably the number of characters, which of _ne th pad, z. B. a pressure sensitive print hammer, and paper 130, prints.

the distances between adjacent characters One recognizes that with high-speed printers

correspond to the width of a print hammer. In other words, use print hammers with elongated heads when each print hammer 124, 125, 50 can span more than a predetermined character pressure 126, 127 , etc. to 129 three character columns. Since the printing process is under tension, the spacing between adjacent devices of this type usually corresponds to the width of three character columns, carried out in such a way that one character is present in one cycle and each character is present three times. Although a line is being printed, the hammer heads have not gone into further details here, but the line corresponding to the printing line is aligned, it should be noted that this arrangement is intended to allow a simplification along this line or line to enable a predetermined of the logic circuits and devices. Number of evenly spaced light that are required for the printing process, characters are printed. In the previously known wherein these circuits and devices in many printers separate print hammers are used for each point on the basis of FIG. 1 described 60 of these predetermined character printing stations use

resemble.

F i g. 3 shows a further modified arrangement in which a belt or chain 85 carrying the characters runs over wheels 93 and 94 and the

det, and the characters on the drum or the tape are usually separated by an amount separated, which is also equal to the distance between the predetermined character printing stations

Carries characters 86, 87, 88 , etc. to 91; is also 65. Printing is done by having a print hammer 89, 90 , etc. to 92 . provided, printing web between a hammer head and each spanning several columns of characters. The one character on the drum or the character 86, 87, 88 etc. repeat in this band is subjected to a pressure. To be considered at this

The web to be printed can be ordinary paper. In this case you can use a ribbon or another suitable source of marking paint, or use a pressure sensitive one Paper that does not require an additional source of color when used.

In the arrangement described above, the following applies: When the characters are arranged on a drum are, the successive rows of characters along the drum circumference are around one Offset amount that is equal to the height of a character or slightly larger, so that every hammer can only print one character in a row at a time. When the characters are provided on a tape, the characters are distributed along the tape at intervals that correspond to a suitable multiple of the distances between adjacent character printing stations, where this multiple is also equal to the length of a print hammer head along the print line.

Claims (5)

Patent claims: 1.Drum or chain high-speed printer, in which the print types moved continuously past successive print points in a print line are operated by means of print hammers controlled in such a way that selected print types are printed at predetermined points on the print line, characterized in that a hammer ( 13, 16; -V "89 to 90 ;. 124 to 127; 97 to 99) spans two or three print points of the print line, the distance between the print types of a type set corresponds to the number of print points spanned by a hammer and the imprint in the one hammer assigned pressure points takes place one after the other. 2. drum or chain high-speed printer according to claim 1, characterized in that the Imprint in each printing point during the passage of a complete type set. 3. chain printer according to claim 1 or 2, characterized by several similar, in one Number corresponding to the number of printing types spanned by a hammer, consecutive Printing types (Fig. 2). 4. Drum printer according to claim 1 or 2, characterized in that the printing types adjacent type sets are each offset by one type height in the circumferential direction. 5. Drum printer according to claim 4, characterized by a control device (100 to 110), through which the print hammers (97 to 99) can be displaced synchronously with the rotary drum movement along the print line, such that the types of adjacent, common hammer (e.g. 97 ) assigned type sets can be operated. . Considered publications: German Patent No. 971 537; German Auslegeschrift No. 1 014 586;
U.S. Patents Nos. 1933 650, 2,736,830, 938193. . 1 sheet of drawings 809 520/333 3.68 © Bundesdruckerei Berlin