JPS59500709A - ribbon cassette - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Rigin cassette Technical field The present invention relates to a ribbon cassette, and more particularly to an automatic ribbon cassette built into the ribbon cassette. This invention relates to an adjustment ink reapplication mechanism.

Background technology The printers in this section use endless ribbon cassettes. , Sori? Typically installed so that the print station is driven past the print station. It has become a common usage. The print ribbon used is pre-applied with ink. If the disposable ribbon that is installed is continuously or periodically inserted during the printing operation. Either a reinking ribbon to reapply the color. ribbon cassette itself The body is a stuffed box type in which the ribbons are housed in a random manner within the cassette. Anything is fine. The ribbons packed in this way were previously folded. is again unwound at the exit of the cassette and driven to the print station where it is is passed back into the cassette in a random manner and folded or folded.

Therefore, the ribbon is used in a movable loop structure in the cassette and is often be brought into continuous contact with the application core or the like, or Multiple coiled sections around a central core to control inking or re-inking It can be used in either of two ways:

European Patent Application No. 0.019,649 uses an endless ribbon and Do you have two ink supply rollers for application? cassette. Furthermore , is rotatably attached to the lever, and is pressed toward the ink supply roller by a spring. A cooperating ink transfer roller is provided in frictional contact with the roller. stomach The print transfer roller guides the ribbon as it is advanced in contact with it and Perform both transfer of ink to the print. The drawbacks of this structure are transferred to the ribbon. It is not true that the amount of ink is unrelated to the amount of ink actually needed; The load on the ink transfer roller applies almost constant pressure to the ink supply roller. , because the ink is almost uniformly transferred to the ribbon.

The structure allows the amount of ink transferred to the lithium to vary depending on the tension of the lithium. It is disclosed in British Patent Application No. 2,033,872. However, this structure The ink transfer roller uses a separate compression element to sense the tension in the bong. In order to control the contact pressure of the core, this structure allows for changes in the ink state of the core. This results in regulation of ink transfer with considerable delay from changes in tension resulting from oxidation.

Additionally, the ink reapplying device, including the compression element and the ink core, is part of the ribbon cassette. Although it did not form, it was found that the quality of the print suppression was getting worse. Sometimes it can also be attached to a cassette.

Disclosure of invention An object of the present invention is that an ink reapplying mechanism is formed integrally with a ribbon cassette, It is more sensitive to changes in the ink condition of the ribbon, and can be adjusted more quickly to improve transfer to the ribbon. Provides ribbon cassettes that can automatically control and adjust the amount of ink available It is to be.

According to the invention, it comprises a container and an endless ribbon contained within the container. , move the ribbon into and out of the container for use in the printing operation an ink supply roller rotatably supported at a fixed location within the container; and the IJ is rotatably mounted in the container and connects the ink supply roll to the IJ. , y to be in rotating contact with the ink supply roll to transfer ink to the ink supply roll. an ink transfer roll that is connected to the ink supply roll, and the ink transfer roll is connected to the ink supply roll. It is configured to move by the movement of the ribbon against the When the tension on the ribbon increases, the pressure on the ink supply roll is increased to increase the tension on the ribbon. Increase ink transfer to the gun and keep the ink in the gun saturated. As the tension of the ribbon decreases, the pressure of the ink supply roll decreases. In order to reduce the amount of ink transferred to the cylinder, or to remove the bottle or cassette. This is what we provide.

Brief description of the drawing The invention will now be described in detail by way of example with reference to the accompanying drawings, in which: FIG.

FIG. 1 illustrates a ribbon re-inking mechanism according to the present invention and a ten-cassette. FIG.

Figure 2 shows the flat surface of the ribbon cassette body with the cover removed to reveal the internal structure. It is a front view.

FIG. 3 is a front view taken along line 3-3 in FIG. 2 from that direction.

FIG. 4 is a side view taken along line 4--4 in FIG. 2.

FIG. 5 is an enlarged view of a portion of the ink reapplying mechanism shown in FIG. 2.

6 is a plan view of the cover of the cassette shown in FIG. 2; FIG.

FIG. 7 is a side view taken along line 7-7 of FIG. 6 from that direction.

8 is a bottom view of the underside of the cassette cover shown in FIG. 6; FIG.

FIG. 9 is a side view taken along line 9--9 in FIG. 8 from that direction.

BEST MODE FOR CARRYING OUT THE INVENTION Figure 1 shows a ribbon cassette 1 with a swivel for installing an ink reapplying mechanism. 0, in which a shaft or spindle 32 of fixed position bears the Included is an ink supply roll 12 of porous rubber which itself contains ink. Transcription The roll 18 is rotatably mounted on a carrier 36 which is supported on a shaft or spindle 38. mounted, moved and typically in surface contact with the ink supply roll 12 . A single guide post 40 is provided upstream of transfer roll 18 and located outside of transfer roll 18 . It is designed to send l) zn 20 along a slightly shorter division of half the circumference. .

The rotation of the transfer roll 18, which is in pressure contact with the ink supply roll 12, is caused by the ribbon 20 itself. This is done by utilizing the pressure contact relationship between the two. IJ, gn20 When the ink dries up due to use, is the tension in IJ and Y the reason for its dry state? The increase in tension causes the ribbon 20 to apply a large force to the ink supply roller on the transfer roll. As a result, the transfer from the inch supply roll 12 is To allow ink to be transferred more rapidly to the roll 18. Transfer roll 18 When the is saturated with ink to some extent, the tension of the lithine depends on the wet state of the ink. When the pressure of the transfer roll 18 against the ink supply roll 12 is released, By this method, an image is transferred from the ink supply roll 12 to the ink transfer roll 18. The amount of ink transferred is adjusted. As a result, if the lithium is saturated, the ink will regenerate. When the ink of Ritin 20 is depleted, it is necessary to apply less ink. Ru. With this method and structure, this ink reapplying mechanism is connected to the ink supply roller. to provide automatic adjustment and control of the amount of ink transferred from roll 12 to transfer roll 18. It can be seen that the ink on the ribbon 20 can be properly maintained by .

Structure of the ink reapplying mechanism within the ribbon cassette 10 as specifically depicted in FIG. Depending on the design of the particular IJ, y/n cassette, there are many different formats to choose from. It is obvious that you could choose something like this.

Figure 2 shows the internal structure and various components of a preferred structure according to the subject matter of this invention. FIG. 2 is a plan view of the main body of the IJ-F cassette with the cover removed for illustration.

Such a cassette body 50 is preferably made of plastic, a molded material, and 9. The overall shape of the case is rectangular and flat so as to support the ribbon inside. so that it can be fitted along and adjacent to the printer's print station. It is. As shown, the cassette body 50 starts from the right side of the cassette. a wall 54 that curves toward the rear of the cassette and extends along the rear of the cassette; a wall portion 56 that curves toward the front of the cassette to near the left side of the cassette; 58 to include a large cavity or chamber 52 formed in part by an outer wall consisting of It's Nishide. The wall portion 60 provided approximately in the center only extends over the cassette body 50. An extending, diagonal or inclined wall 62 is connected to one end of the wall section 60 and extends at an angle therefrom. It extends downward, ie towards the front of the cassette body. Wall 62 is the cassette body A wall portion 64 extends along the front portion of the front portion toward the right side thereof. Short wall section 66 and other walls The section 68 is provided between the wall section 64 and the starting section of the wall section 54 .

A plurality of latch members or lugs 70 are integrally formed with the cassette body and are generally Connectors or connectors provided at the four corners of the seat cover to the mating receivers of the lug 70. Form the fixture. The front guide or positioning finger 72 is used to attach the cassette cover to the main body. Provided as an integral part of the body 50 to aid in connection. Of course, cassette The main body 50 and the cover are integrally connected to form a ribbon container (described later). You should understand that you can.

Each component inside the cassette body 50 includes a pair of rollers 80,82, which are In cooperation with each other at the inlet end of the cassette, in the direction of arrow 86, i.e. the cavity or is positioned to drive ribbon 84 into chamber 52 . Of course, ribbon 8 4 is represented by a single line inside the cavity 52 in Figure 2, but it almost fills the inside of the cavity. It should be noted that it is folded and packed many times as shown. Low Roller 82 is preferably a drive roller connected to a drive member (not shown). The idler roller 80 is supported by a spring 88 wrapped around the stud or bottle 90. and is maintained in a biased position with respect to roller 82. One end of the spring 88 is attached to the spindle or abuts one end of a support arm 92 which is pivoted on a shaft 94. Furthermore, the spring 88 Since the other end is in contact with an extension 96 of the wall 62, the arm 92 presses the idler roller 80. I will do it. That is, the arm 92 is moved against the drive roller 82 by the action of the spring 88. The ribbon 84 is pressed against the ribbon 84 to provide a precise drive to the ribbon 84. As is well known, The support arm 92 is inserted between the ribbon drive unit consisting of several idler rollers 80. multiple strips that extend to .

Can include nose bearings.

The ribbon re-inking mechanism is provided on the right side of the figure, and the cassette adjacent to the ribbon 84 is is supported within the main body 50. The ink supply roll 100 made of porous rubber has a wall m 60. Provided in the cavity or chamber 104 formed by 62 and 64 rotatably mounted on a hub 101 mounted on a spindle 102, or Bearing is carried out. The ink transfer roll 110, preferably made of glass material, is an ink transfer roll 110. The supply roll 100 is supported and attached to a carreno 112 on the right side. Carreno 1 12 is a spindle 11 for rotatably attaching the transfer roll 110 to one end of the spindle 11; 4 and a hub 11 fitted into a pivot pin or spindle 118 at the other end. It has 6. Spindle 120 adjacent wall 54 includes rollers or similar supports. 119 is placed. The carriage 112 with the ink transfer roll 110 spins bearing or pivoting on the roller 118, the transfer roll is rotated relative to the ink supply roll 100; Allows for surface contact that can increase or decrease pressure conditions.

Ribbons 84 are housed within cavities or chambers 52 in a random or packed manner and are wall 1 drawn across the ridge or dam 115 and formed as the end of the wall 60 22 to take a path around the support 119. Support 119? The ribbon 84 is guided around the guide post 124 and further around the ink supply roll 100. Apply sufficient tension to the transfer roll to rotate it so that it rotates to zero. is sent around the wall 110. The spindle 114 accommodates rotation of the transfer roll 110. For simplicity, it is assumed to be a motion fit (1 oose fit). Ribbon 84 is a skein through the outlet of the print body 50 to a print station (not shown). along and further sandwiched between rollers 80 and 82 and driven into storage chamber 52. Sent to be returned. The ribbon path follows the rows indicated by the arrows in Figure 2. It is expressed by the direction of rotation of the arrow.

3 and 4 show elevational views of the main body 50 of the cassette; Tilt the bin at 2 degrees to the print line to use its width. A bong passage is illustrated. The cassette body 50 is disclosed in U.S. Patent No. 4,209,261. 2 degrees slanted to the print line, as explained in full detail in along the surface passing through the printing station and the storage chamber or cavity 52; is formed to include the entire ribbon path, including the portion of ribbon 84 at . Fourth The side view of the figure also shows the spindle or represents a hub. Several spindles, pivot pins and the like are usually attached to a cassette. It should be noted that it is molded as an integral part of the main body 50.

Figure 5 is an enlarged elevational view of the part of the ink reapplication mechanism shown in Figure 2; The carriage 112 has an upright nozzle 116 bearing on a pivot pin 118. is a good example. An ink transfer roll 110 is at the other end of the carriage 112 The ink supply roller is freely journalled on the spindle 114 and centered on the pivot pin 118. 100 (FIG. 2) in a swingable manner. be done. The range of the oscillating motion is the ink rotation for reapplying ink to the ribbon 84. Depending on the amount of ink on the outer periphery of the copying roll 110, and depending on the necessity, Supplying torque for rotating the roll 110 and the ink supply roll 100 It is a fairly small angle range determined by the tension of the bong 84. But of course it must be understood.

FIG. 6 shows a cassette cover that is fitted into the cassette main body 50 shown in FIG. A top view of bar 130 is illustrated. The cover 130 covers about the upper half of the cover and covers the main body. It has a rib or lip portion 132, which is a portion that generally conforms to the contour of 50. Reply Portion 132 follows the two-degree beveled structure of the cassette and the two-degree beveled path taken by ribbon 84. and provide a design that provides an aesthetic appearance on the top surface of the cover 130.

The front portion 134 of the cover is generally flat and is similar to U.S. Pat. No. 4,209,261. It may take the form of a printed wire lenoid, as well explained in the issue. Provides space for and covers the print mechanism. front part 134 also includes a cut end portion 136 of the paper and a receptacle for receiving the lug 70 (FIG. 2). Several holes 138 are provided in the cover 130. To accommodate the ribbon play roller 80. A recess 140 is provided in the cover 130 to accommodate the porous rubber ink supply roll. Another recess 142 for accommodating 100 is also provided in the cover 130. simple As simply mentioned above, this cassette is provided with a cover to form a container for the ribbon 84. 130 (Fig. 6) and hold the main body 50 (Fig. 2).

FIG. 7 illustrates the shape of the cassette cover 130 as viewed from the right side of FIG. rib Portion 132 covers the body 50 of the cassette, and flat portion 134 extends beyond the body. generally includes a printing mechanism (not shown) extending and cooperating with the ribbon cassette. Cover.

FIG. 8 shows a bottom view of the cassette cover 130 seen from the opposite side of the top view of FIG. represent. The underside or back side of the lip portion 132 of the cover 130 also has a lower ridge or dam. 115 and the location of the upper ridge or dam 144 that faces and co-exists with the main body 50; The location of the recess 142 for the ink supply roll and the location of the recess 140 for the idler roll. , and a receiving hole 138 for receiving the lug 70 of the cassette body 50.

The front portion 134 and the cut end 136 are also shown in the elevational view of FIG. 9 as viewed from the right side of FIG. It is a representation.

In operation of the ribbon cassette and reinking mechanism, preferably 1/4 inch approximately 18 feet (approximately 548.64-cm) long with a width of 6,35+ in. As the den 84 is loaded or stuffed into the cavity 52, the loop is A portion of the loop extends in a path around the roller 119 and ink transfer roll 110. and the print line or print step typically proximate the cut end 136. an idler roller 80 and a driver which preferably drive the ribbon in a continuous manner along the It is passed between the moving roller 82 and back into the chamber 52 .

Ribbon 84 is moved by a printing element (such as a printing wire) during a printing operation. When you receive a blow, the ink of Su7] Bon is used and consumed in that action. .

When the ink empties from the ribbon 84, the saturation of the ribbon is less. It may become dry. In such cases, the less saturated ribbon and The frictional force between the ink transfer roll 110 increases and as a result the idler roller 80 and the drive The tension of IJ and y corresponds to the tension 9 of the dynamic roller 82 and the increased frictional force. increases. As the tension in the ribbon increases, it causes the ribbon 84 to transfer ink. The pressure on the roll 110 is increased so that the ink supply roll 100 and the surface are moved with greater force. Push the roll 110 so that they are in surface contact or increase the swing of the roll 110. , increases the transfer of ink to and from the transfer roll.

As the ribbon 84 increases ink saturation due to increased ink transfer, it actually IJ and Y have a large frictional force when rotating the ink transfer roll 110. Therefore, the refining tension is relatively reduced due to ink saturation or wet conditions. be done. The effect of reduced ribbon tension and reduced frictional force is that the ink transfer roll 110 The ink supply roll 100 swings away from the ink supply roll 100 or tries to move away from the ink supply roll 100. The amount or rate of ink transferred from the ink supply roll 100 to the transfer roll 11.0 is reduced. It will be less. When the ribbon is relatively saturated with ink, the amount of ink transferred is Requires less or less re-inking, and the ribbon is relatively less saturated. or when the ribbon is dry of ink, increase the amount of ink transferred. Otherwise, more ink needs to be reapplied. An example of how it works The ink reapplication process is automatically adjusted and automatically adjusts according to the actual ink saturation state. I try to reapply ink to the ribbon every now and then.

The above explanations and disclosures are based on ink reapplication using the increase and decrease of tension in the ribbon itself. A ribbon cassette with a mechanism transfers ink to a fixed ink supply roll. The ink transfer roller to the ink supply roller is moved by swinging the transfer roller. It may be seen that the .

FIG. 6 Use proverbs, sophistication, book, bait, dami

Claims (1)

[Claims] 1. a container (50) and an endless ribbon ( 20, 84) into and within said container (50) for use in a printing operation. a driving means (80, 82) for moving the IJ, pn (20, 84') from the An ink supply roll ( 12°100) and in rotational contact with the ink supply roll (12,100). is rotatably mounted in the container (50) and the ink supply roll (12, 100) to the ribbon (20, 84); a transfer roll (18, 110); The transfer roll (18, 110) is positioned relative to the ink supply roll (12°100). said ribbon (20,84) arranged to move by said ribbon (20,84); 4) The increase in the tension of the ribbon indicating ink depletion is caused by the increase in the tension of the ink supply roller. The pressure on the bottle (12,100) is increased to the IJ, bottle (20,84). increases the ink transfer to the ribbon (20, 84) and reduces the saturation of the ink in the ribbon (20, 84). The indicated decrease in tension in the ribbon (20, 84) is due to the decrease in tension in the ink supply roll (12). , 100) to reduce the pressure on the ribbons (20, 84). or bottle cassette to reduce transcription. 2. Apply rotational drive to the ink transfer roll (18, 110) to supply the ink. said ink transfer roll to move said ink transfer roll relative to roll (12,100); ink transfer rolls (18, 110). Claims include guiding means (40, 124) for guiding the ribbon (20, 84). The ribbon cassette described in item 1. 3. The guide means rotates about half of the outer circumference of the ink transfer roll (18°110). The ribbon (2o. Claim 2 includes a guide boss (40, 124) arranged to guide the Ribbon cassette described in section. 4 The ink transfer roll (18, 110) is located at one end of the carriage (112). freely bearing on a positioned spindle (114), the other end of which is connected to said container (5). 0) Claim mounted on a pivot bin (11'8) integrally formed on the wall The ribbon cassette described in item 1. 5. The carriage (112) has the pivot bin (118) at its other end. 5. A ribbon cassette according to claim 4 having an upright hub (116) bearing on the ribbon cassette. To 0 6. The ink supply roll (12, 100) is integrally attached to the wall of the container (50). as claimed in claim 1, which is rotatably mounted on a formed spindle (102). Ribin cassette. 7. The ink supply roll (12, Zoo) is made of porous rubber. Ribbon cassettes listed in Range 1. 8. A chamber for accommodating said ribbons (84) in said container (5o) in a random manner; (52. Ribbon cassette according to claim 1.