DE2309090A1 - PRINTING DEVICE - Google Patents

Description

The present invention relates generally to printing devices and particularly to compact, relatively inexpensive printing devices intended for domestic use are suitable.

With the increasing number of credit transactions taking place It has become increasingly desirable and even necessary to address the financial aspects automate these transactions. Such automation involves making payments very quickly and keeping these payments on record by the buyer. In the Most of the time, payments are mostly primary by Schncks vur & bnornmen that of the individual Customers nurmalerwuisn were written out with one hand, and ^ w-ir. '. nwulil regarding (Ins Z ihlun ^ seir.p F "in:; nrR as .inch

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the amounts to be paid. As the handwritten inserts With the current state of the art, data cannot be read from machines with sufficient accuracy, Each check must be read individually by people, and the payee and the amount must be used very carefully. Those previously known in the art and on the Printing devices on the market, the characters prints that can be read by machines are very expensive precision machines of complex design. she are therefore too expensive for domestic use. There is thus a need for a simple, very inexpensive data recording device that can be manufactured and marketed in large quantities, and that are economical can be manufactured so that it can be thrown away or replaced if failure occurs, rather than an expensive repair service to make necessary.

According to the present invention, a relatively small, simple and inexpensive printing device is provided, which is particularly suitable for individual use when making payments from different credit accounts is.

The apparatus comprises a novel printing plate assembly with a roller which in a relatively simple manner at Forward and backward movements of the roller in an Oruck. Position and can be moved into a position in which no printing is carried out. As a second new type of training with triple Function includes the device print wheels that can be set to the desired characters printed on, with the printed characters on a sector, Visible signs on a second sector for easy adjustment of the print wheel and locking in a third Sector are provided.

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The apparatus also includes a print ribbon that is incremental is indexed during each print cycle of the device.

The invention is clearer from the following description of an embodiment with reference to the attached Drawings.

In the drawings are:

Figure i is a perspective view of an inventive Printing device,

FIG. 2 shows a further perspective view on a somewhat enlarged scale compared to FIG. 1, with the removed Lid,

FIG. 3 shows a plan view of the device according to FIGS. 1 and 2, shown on a further enlarged scale 2, which is partially shown as a section and in which intended for clearer illustration Parts are omitted,

FIG. 4 is an exploded view of the roller bearing support and fastening the device,

FIG. 5 is a perspective bottom view of the slide part of the roller bearing and fastening arrangement,

FIG. 6 is a perspective view of the assembled roller bearing and fastening arrangement;

Figure 7 is a sectional view substantially along the through the line 7-7 in Figure 6 designated plane,

Figures θ and 9 somewhat schematic longitudinal sectional views, in which the operation of the roller bearing

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and mounting arrangement is shown.

Figure 1o is a perspective view of the storage and attachment the printing wheels of the invention Contraption,

FIG. 11 is a sectional view taken substantially along the plane indicated by the line 11-11 in FIG showing the ribbon indexing mechanism.

FIG. 12 shows a plan view of the parts of the color band indexing device shown in FIG. 11, and FIG

FIG. 13 is a sectional view taken substantially along the plane indicated by line 13-13 in FIG is.

Referring now to the drawings, and initially to Figures 1-3, there is a printing apparatus in accordance with the present invention shown. The device comprises a frame 10 and a lid 12 which is removably attached to the frame. Of the Frame 10 comprises two side panels 14 and 15 which are secured to one another by a plurality of cross bars 16 extending therebetween are.

A form holder 16 extends between the side panels

14 and 15 and is in openings 19 in the side panels 14 and

15 attached. The form holder 1Θ is arranged so that they can carry a form to be printed within the outer limits of the frame 1o.

A plurality of printing wheels 2o are rotatably mounted on an axle shaft 22 which is fastened to the side plates 14 and 15.

A print ribbon 24 is on an output spool 26 and a Take-up spool 2Θ wound. The printing ribbon 24 runs from the spool 26 to the spool 28 between the form holder

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tion 18 and the printing wheels 2o to the printing ink for Printing the form to deliver. The sinks 26 and 2Θ are held in place by spring clips 29.

The apparatus also includes a roller support and mounting arrangement 3o, which rotatably supports a roller 32 on a roller shaft 33. The roller 32 is arranged so that it passes through an elongated slot 34 in the form holder 18 for contact with a form to roll off, which is carried in the form holder, and an imprint of the printing characters located on the printing wheels 2o to effect.

The printing wheels are shown in FIGS. 2 and 1o. Each pressure wheel 2o is formed with three separate segments, which have different circumferential properties. The scope one segment contains printed characters 40, the scope of a further segment contains visible characters 42 and the periphery of the third segment contains locking grooves 44. As described above, the print wheels 2o are on the Axle shaft 22 rotatably mounted in order to be able to bring the desired printing characters into the printing position. [The axle shaft also serves as a cross bar between the side plates 14 and 15).

The print wheels are in the set position FederarretierungsarmB 46 held, which extend from a common rod 47 and releasably in the locking grooves 44 intervene to keep the print wheels in the selected position. (The bar 47 also serves as a cross bar between the side plates 14 and 15).

The printing position of each print mark is that in which the print mark is on the slot 34 in the form holder 18 is aligned.

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To limit the movement of the print wheel to what is required to get each print character in the print position bring the wheels with arcuate slots 4Θ formed, and a stop rod 5o extends through the arcuate slots 48, thereby the for each Limit print wheel possible movement.

To facilitate the adjustment of the print wheels and around it to enable the print wheels to be arranged in relatively close association with one another and of the least possible Can be large, pin holes 52 are formed in the periphery on each visible character 42. this makes possible it is a matter of inserting a pointed pen into the holes in order to put the desired characters in the printing position fear.

As can be seen from Figure 1, the cover 12 has an opening 54 through which the pressure wheels 2o protrude to show the visible characters 42. One edge 55 the opening serves as a guideline to indicate which print mark 4o is in the print position. This The print mark corresponds to the visible character 42 on the guideline formed by the edge 55. The edge 55 also serves as a stop against which the pin strikes, see above that when the pen is inserted into the correct hole on the selected character, the rotation of the Wheels automatically brings the desired print mark into the print position through the pen.

In FIGS. 3-9, the pressure roller bearing and fastening arrangement is shown and the platen is shown in detail. The roller bearing and mounting arrangement has first and second roller mounting members in the form of a sled member indicated generally at 56 and a Actuating part, which is indicated generally at 58.

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The slide part 56 comprises a frame 59 with a central opening 6o which is delimited by a rear wall 61 and two side walls 62. Each side wall 62 has a guide slot 63 running in the vertical direction. A roller shaft 33 of the pressure roller 32 is located in the guide slots 63. Wire springs 64 secure the shaft 33 in the slot 63.

As shown in Figure 3, there are two locking springs 65 provided on the opposite sides of the carriage part 56. The locking springs 65 have an end portion 65a arranged so that it engages spring engagement surfaces 66, which are formed in the side plate 14, and are arranged with opposite end portions 65b so as to be attached to Attack surfaces 67 in the side plate 15 in a locking manner. These locking springs are shown in solid lines in FIG shown in engagement with the spring engagement surfaces 67 and in dashed lines in their engagement with the spring engagement sf laugh 66.

As shown most clearly in Figure 5, the sled comprises part 56 also includes two downwardly extending spring engagement parts 68. These engaging parts serve the purpose of the slide part 56 to be attached to the actuating part 58.

The actuating part 5Θ has an upper pressure roller receiving part 72 and a lower guide part 74. The pressure roller receiving part 72 includes two side walls 76 and a rear wall 7B. The side walls 76 each have a lower curved slot 82 and an upper cam slot 84. Located behind the cam slots 84 in each side wall a perpendicular actuating surface 86. Inclined running curve surfaces 87 connect the lower curve » slot 84 with the upper cam slot 86. A handle ΘΒ starts from the lower guide part 74.

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The guide part 74 is provided with a plurality of guide surfaces 9o provided, which are in sliding engagement with a guide rail 92 between the side plates 14 and 15 runs. The guide member 74 also includes two longitudinally extending openings 94 for receiving the engaging part 68 of the slide part 56. In its assembled Relatively, the carriage part 56 slides over the actuating part 58. The roller receiving part 72 of the actuating part is located in the opening 6o of the Carriage part 56. The engagement parts 68 of the carriage part 56 extend through openings 94 in the actuating part By this attachment of the slide part 56 on the actuating part 58 a limited sliding movement of the slide part 56 relative to the actuating part 58 is made possible, as shown in Figures 8 and 9, to which reference is now made.

As shown in Figure 8, the actuator end wall 78 abuts 58 on the wall 61 of the carriage part 56. In this position, the pressure roller shaft 33 is in the lower cam slots 82 of the actuating part, which thus represent a lower position for the pressure roller 32. When the actuating part 58 is opposite to the slide part is moved from the position shown in Figure 8 to the position shown in Figure 9, the pressure roller shaft moves 33 rises up on the sloping curved surfaces 87 and arrives in the upper curved slots 84 and in contact with the actuation surfaces 86.

The pressure roller is caused by the relative movement of the operating part 58 raised in relation to the carriage part 56 into a printing position. This relative movement is due to Pull on the handle 88 caused while the spring 65 holds back the carriage 56.

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The guide slots formed in the carriage part 56 63 guide the shaft 33 with the pressure roller 32 in the vertical direction when the movement of the actuating part 5B is opposite the carriage part 56 takes place. The curved slots and curved surfaces raise and lower the pressure roller. The position of the pressure roller in the arrangement 3o is such that the pressure roller 32 extends completely upwards runs through the slot 34 and presses the form firmly against the backwheels 2o when the pressure roller 32 is in the position shown in FIG Figure 9 is the position shown. However, when the platen 32 is in the position shown in Figure θ, it is far enough away from the form so that it does not touch the print wheels or presses against the ribbon 24 so that this position is an idle position in which no printing is carried out.

In Figures 2, 3 and 10-13, the ribbon advancing device is shown in detail. The ribbon advancing device includes a ratchet wheel 96 which is attached to the ribbon take-up spool 28 is attached. The gear 96 is by an articulated indexing pawl 98 and a locking member 99 on the take-up reel is actuated. the Indexing pawl 98 is actuated by an actuating arm 1oo which is rotatable on a pivot 1o1 in one plane is attached, which runs parallel to the form holder. The arm 1oo is in the plane of its rotary motion relatively stiff and relatively flexible in the plane running transversely to it. The actuating arm 1oo carries an actuating fork 1o2 which engages the indexing pawl 98 in such a way that a rotary movement of the actuating arm 1oo clockwise in the view of FIG. 12 causes the indexing pawl 98 to rotate the gearwheel 96. The counterclockwise return movement under the influence of a return spring 1o4 causes the indexing pawl 96 passes over the teeth of the gear, whereby the Locking part 99 holds the gear in its position. Thus, by the back and forth movement of the arm

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1oo in a known manner the gear 96 is rotated step by step, whereby the recording pulse 28 is rotated step by step will.

The actuating arm 1oo is actuated by an actuating block 1o6, which is actuated by the actuating part 58 of the pressure roller bearing and mounting assembly 3o is carried. Of the Block 1o6 has a substantially at its leading edge vertical actuating surface 1o8 and an overflow surface 11o, which runs obliquely downwards from the actuating surface 1oB. With upward movement of the pressure roller bearing and fastening arrangement 3o from the position shown in dashed lines in FIG The position shown in solid lines in FIG. 3 engages the actuating surface 1o8 of the actuating block 1o6 arm 1oo and turn it to advance the ribbon one step. By the reverse movement of the pressure roller assembly 3o from the position shown in solid lines in FIG. 3 into that in FIG. 3 in dashed lines The position shown causes the inclined overflow surface 11o to rest on the actuating arm 1oo. Because the actuator arm 1oo consists of a material that is flexible in a plane that runs transversely to the plane of the form holder, causes the overflow area that the arm 1oo bends upwards and passes over the actuation block so that no action or actuation of the gear 96 takes place. The movement the platen bearing and mounting assembly 3o in one direction causes a gradual advance of the ribbon, while the movement in the opposite direction has no effect on the ribbon.

Now the operation of the device according to the invention described. It is assumed for the beginning of a printing process that the device is in the is in the position shown in Figures 1, 2 and 3. In order to print the desired characters, first

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a form inserted into the form holder 18 so that that it is under the ribbon 24 and the print wheels 2o. The characters to be printed are selected by inserting a pin into the pin holes 52 and pushing the pressure wheels 2o so far rotated until the desired characters are displayed are located above the edge 55. The handle 38 is then grasped and moved in one direction (downwards in FIG. 3) drawn to the platen support and mounting assembly 3o from that shown in solid lines To move the position that represents the starting or rest position into the position shown in dashed lines, which represents an actuated position. As can be seen from Figure 3, the locking springs 65 engage the Spring engagement surfaces 67 of the side plate 15. The sliding seat of the actuating part 5B opposite the slide part 56 is such that it requires less force, the actuating part 58 in the slide part from the position shown in FIG. 8 into the position shown in FIG move as it is necessary to overcome the locking wire locking action of the locking springs 65.

During the downward movement of the handle 88 (in the view 3), the actuating part 58 is initially moved from the position shown in FIG. 8 with respect to the slide part 56 moved into the position shown in Figure 9, whereby the pressure roller 32 is raised from the idle position in the printing position before any longitudinal movement of the platen 32 has taken place.

By continuing the pull on the handle 88 from this position shown in Figure 9, the actuating surfaces 86 brought into abutment with the platen plate 33, and when a sufficient force is applied, the locking action of the locking springs 65 on the spring engaging surfaces 67 overcome, as a result of which the slide part 56 is exposed

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is given and the entire print roller bearing and mounting arrangement 3o then on the rail 92 from the starting position shown in solid lines in FIG is moved into the actuation position shown in dashed lines. During this movement the pressure roller is 32 in the upper printing position, as shown in Figure 9, and pushes the form through the slot 34 rolling to the ribbon and the print wheels, whereby the selected print characters on the print wheels 2o by the ink hand 24 can be printed on the form. During this movement, the overflow surface 11o of the actuating block runs 1o6 over the arm 1oo, so there is no actuation of the arm. This movement of the print roller bearing and Fastening arrangement 3o from the starting position is as long as continued until it is the one shown in dashed lines Actuation position reached.

In the actuation position, which is shown in broken lines in FIG. 3, the locking springs 65 act the spring engagement surfaces 66 of the side plate 14. At the At the end of the stroke, the pressure roller remains in an upper or pressure position, as shown in FIG. LJm one To end the entire operating process, the pressure roller bearing and fastening arrangement 3o is actuated Position returned to the starting position. This is achieved in that the handle Π8 (in the view of the Figure 3) is pushed upwards. When this force is exerted on the handle 88, the locking springs 65 hold the carriage part 56 in the actuated position and the actuating member 58 first moves opposite the slide part 56 from the position shown in FIG. 9 into the position shown in FIG. This causes the platen to fall 32 down into its idle position in the cam slots 82. When the position shown in Figure G is reached is, the end wall 76 contacts the Betöti ■ un -'stei Is 50 die

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Rear wall 61 of the slide part 56. The further exertion of the force on the handle 88 then overcomes the locking effect of the springs 65 and separates them from the spring engagement surfaces 66, so that the pressure roller bearing and Fastening arrangement from the dashed line in Figure 3 Operating position shown in lines are moved into the starting position shown in solid lines can. This movement takes place with the pressure roller 32 in the idle position, so that during this movement no printing takes place. This prevents a double print or a print image with print shadows at the formular.

During the movement from the actuated position to the starting position, the actuating surface also pivots 1o8 of the actuating block 1o6 the arm 1oo, which causes a gradual advance of the ink ribbon, so that there is a new ribbon area for the next actuation of the device for a printing process.

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Claims (9)

Expectations Tt ^ printing apparatus, characterized by a frame (1o), having a supported from the frame form mounting (18), the one upper surface which is arranged so that it carries a to be printed form, and through an elongate slot (34) runs, at least one print wheel (2o) which is rotatably mounted above the form holder and has at least two separate circumferential sectors, one of which contains a number of types of printing, which can optionally be brought into alignment on the slot (34), and another Sector of visible characters, a display device (55) which serves to indicate on the sector of the visible characters which print type is aligned on the slot (34), locking devices by means of which each printing wheel can be releasably attached in any selected printing position, and a platen assembly (3o) located under the form holder and comprising a platen (32) which is inserted into the slot (3 4) protrudes and is movable on a printing movement path in printing system on the printing types of each wheel, and a handle (88) with which the printing roller can be moved along the movement path. 2. Printing device according to claim 1, characterized by a stop device (48) by means of which the movement each wheel within the limits of the printing types at the printing position be limited. 3. Printing device according to claim 2, characterized in that the stop device has an arcuate slot (48) comprises in each wheel and a stationary stop rod (5o), which runs through each slot. 4. Printing device according to claim 1, characterized in that the detents at intervals along the circumference of the 309835/1008 " ¹⁵ " Wheel formed on a third circumferential sector engaging surfaces and releasable engaging parts, which are so arranged are that they can engage on the engagement surfaces. 5. Pressure roller assembly for a printing device with a frame, printing types and a form holder so arranged is that it holds a form in the printing position opposite the printing types, characterized by a pressure roller (32), a pressure roller bearing and fastening arrangement (3o), the first and second platen mounting parts (56, 58) comprises means for guiding the printing roll mounting assembly for movement on a trajectory from a starting position to an actuating position and back in an actuation passage of the device, means holding the platen mounting parts connect together for limited relative movement between first and second relative positions, wherein the pressure roller mounting parts comprise waistlines, which allows the platen to move between a return to the printing types when the platen mounting parts are in one of their relative positions and hold a non-printing position when the platen mounts in their other relative position, a handle that holds the platen bearing and mounting assembly along their trajectory and the platen mounting parts can be moved between their two relative positions, the device by means of which the pressure roller mounting parts are moved relative to each other, and the device by means of which the pressure roller bearings and the fastening arrangement is held movably along the path of movement. Parts that initially include the movement of the Pressure roller mounting parts in relation to their first Position prior to movement of the platen bearing and fixing assembly from its initial position to its actuated position and, first, the movement of the pressure roller mounts in relation to their second position before the movement of the pressure roller bearing and fastening 309835/1008 arrangement from its actuated position to the starting position cause, whereby only in one direction of movement of the pressure roller a printing process is effected on their trajectory. 6. Printing device according to claim 5, characterized in that the pressure roller fastening parts are a slide part (56) and an actuating part (58) and in that the parts which initially cause a relative movement of the fastening parts, Include locking parts carried by the carriage part and are arranged so that they are releasably attached to the frame in the starting position and in the actuating position attack. 7. Printing device according to claim B, characterized in that the locking parts comprise leaf springs (65). 8. Printing device according to claim 6, characterized in that that the pressure roller bearing and fastening arrangement curve and guide members which are operable to interpose the pressure roller transversely to its path of travel to move the two positions of the print roller. 9. Printing device with printing types and a form holder, which is arranged so that it holds a form in printing position against the printing types, and with a pressure roller arrangement, along a movement path from a starting position to an actuating position and back to the implementation a printing process is movable, characterized by an arranged between the printing types and the form holder elongated ribbon, dispensing and receiving directions for the ink ribbon, wherein the pressure roller assembly and the ink ribbon dispensing and receiving parts comprise a device for indexing the ribbon comprising an actuator arm which is arranged to that it actuates a gear and a locking device, and that in the plane of movement of the pressure roller assembly - 17 - 309835/1008 is relatively stiff and relatively flexible in the plane running transversely to it, and one on the pressure roller arrangement, located arm actuator having a first surface which is substantially transverse to the plane of the path of travel of the pressure roller assembly and is arranged so, that it engages the actuating arm actuating when the Pressure roller assembly is moved in one direction, and a second surface which is inclined to the first surface and is arranged so that it allows the actuator to To overrun the actuating arm by bending the arm in the plane of its flexibility. 1o. Printing device according to claim 9, characterized in that the arm consists of a plastic plastic and is in the plane of its flexibility has a relatively thin cross-section. 309835/1008 4! Blank page