JPH01501459A - front and back printer - 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] front and back printer The present invention is applicable to machines such as convenience store peripheral equipment, electronic typewriters with memory, and furthermore, More specifically, it relates to the printer section of such machines.

Part of the problem has already been addressed in British Patent No. 2.033.304 and French Patent No. 2.033.304. No. 573.010 and U.S. Patent No. 974,585. , these patents constitute the most relevant prior art.

British Patent No. 2,033,304 describes three Describes a printer with an etched rotating print head that can print documents in a row. Ru. Printing is simultaneous on the two sides. two located on the same side of the print carrier. The print heads are aligned to the same level and all three are connected by the relief belt system. Both are driven by the same motor. Therefore, the movement of the head is strictly horizontal and another The second print line at the level requires manual adjustment operations that cannot be done immediately. to each The print head is powered by a motor servo-controlled by the yoke, and printing is done by an electromagnet. controlled by These two movements are combined by a memorized program. I will be forgotten. This device is suitable for repetitive operations at a certain level, such as printing checks and other documents. are doing. Not suitable for complete two-page front/back front/back printing.

French Patent No. 2,573.010 describes an electronic tie with two or more printing yokes. Regarding the plater, since the yokes are arranged on the same axis, printing on the front and back sides is not possible. do not have. However, since the two yokes share the printing work, the printing carrier Advancement of the axle and control of the head require common management or control. The simultaneity of actions The reason why complicated logical methods are not needed is because the division of labor is fair. Each print head The head is responsible for only half of the lines it prints, which makes it difficult to control the advance and control the head. It makes it very easy to manage. This function is taken over by the time sharing unit. printing is carried out via conventional daisy-wheel skew.

Finally, U.S. Patent No. 974.585 has a single electrophotographic printing device. The print carrier is connected to the printing device so that the back side of the page is also printed. Retrace the path you passed before. The problem here is that print carriers have to take No path, i.e. only outward travel for printing on one side or return by changing sides for front and back printing. A return trip is also a logical choice. Logical means are specialized for this function. It's a matter of character.

The present invention removes these limitations and allows simultaneous printing directly before and after previously stored text. Of particular importance are the benefits associated with time gains. It is.

Thus, the system of the present invention provides for the advancement of paper and the two printing heads located on either side of the paper. Before and after information about computer software that creates a program for simultaneous movement of heads. Concepts and handling of paper and hardware related to two groups of opposing print heads combined with mechanical assembly.

Therefore, the present invention firstly applies to machines such as computers and typewriters with memory. Thus, in the method of printing edited documents, the print head and type roll respectively two mechanical assemblies with hands for positioning and advancement of the print carrier; said machine conventionally equipped with stages for simultaneously controlling the advancement of said carrier; a first electronic card provided in combination, the movement of said two print heads is coupled to said first electronic card; carrier, and furthermore, microprocessors and (machine language) programs. A memory containing the above is incorporated, and the above-mentioned mark is incorporated according to the main text to be printed on the front and back on the above-mentioned carrier. A method characterized in that it is combined with a second electronic card that simultaneously controls the printing head. Regarding.

The present invention also relates to conventional machines related to computers, typewriters with memory, etc. Instead of the printing means of a mechanical device having conventional means for handling the carrier and its advancement; The second assembly consists of an assembly, a print head and a type roll located on one side of the carrier. one printing group and a second printing group identical to the first but placed on the other side of the carrier. and advancement of the support, lateral movement of the two print heads and point-by-point marking of each of said heads. a first carrying means for controlling said mechanical assembly through simultaneous control of printing; an electronic card, a microprocessor and a program containing a simultaneous control program for the head; and a second electronic card with a memory card.

In fact, such devices can be used, for example, for individual cards such as administrative documents or continuous sheets of paper such as lists. It is applicable to print both sides of a trip at the same time. This ensures that in all cases A two-fold advantage arises. First, documents can be printed in half the time required with traditional printers. print a book. Second, the document is about half as long, which in the case of a list is paper It saves surface area, saves space, and is easy to use.

The invention will now be described in more detail with respect to non-limiting examples and with reference to the accompanying drawings. Ru. In the drawings, Figures 1.2.3 and 4 show the various parts secured by the assembly. 5 is a schematic side view of the printer showing the means and functions of the printing yoke and ink ribbon. plan view of the link cassette and ribbon track; Figure 6 shows the print head configured by a head positioned in front of the printing roller. Detailed view of the assembly consisting of and the positioning of the ink ribbon, Figure 7 is a longitudinal cross-sectional view of the print head; FIG. 8 is a block diagram of the electronic system of the device; FIG. 9 is a block diagram of the electronic system of the device formed by the present invention. An example of printing is shown.

Referring initially to FIG. It can be seen that it consists of a chassis with 1 fixed and 2 movable relative to the former. be able to. Each part of the chassis has an integrated print head/print roller unit. has. The part 2 has a spindle 3 depending on the path defined by the shape of the movable chassis 2. It is rotatable around the cam and acts as a cam, and the shape is integrally molded with a travel stop. and fix the two end positions. Pulley 7 to external control 8 which can be a knob and the device 4 formed by the rollers 5 connected via two belts: It works like this.

When a rotational movement is applied to the knob 8, this is passed through the roller 5 by the pulley 7. Roller 5 is rotates within the slide 6, brings about the movement of the movable part 2 of the chassis, and also causes the movement of that part. The rotation acts as a cam. Although the amount of movement is limited, it improves the quality of the paper. This allows for convenient introduction and also allows for the adjustments necessary to change the paper thickness. Maximum of 6 pieces It is possible to work in bunches. Furthermore, the spacing between the units is necessary for the introduction of the ribbon. It is essential. Such devices can be used to set the spacing of the print heads, regardless of the object. gives considerable flexibility.

Inking is carried out using a single cassette 28 which is tilted and fixed to a fixed chassis l. This is done with the aid of ribbon 29, so that the outer run and return run of ribbon 20 are the same. level, but instead have their respective print heads facing each other. This is the first 2 and 5. The slope of the cassette corresponds to the spacing between the two heads. , which in this case is 24°8 mm for an ink ribbon with a width of 11+u. ribo The ribbon exits the cassette at an angle so that it is perpendicular to the printhead axis. A tool is used to straighten the tube. This is done by small rollers 30. , which fixes the ribbon path at the same time.

The width of the spacing between the outer and return paths is minimized as shown in FIG. 16 presses against the top of the ribbon 29, while its homologous portion 15 touches the bottom.

Rollers 30 bring these two parts to the correct level. Therefore, the ribbon 29 Fatigue is reduced and therefore its lifespan is increased. Unit 31 has a cassette storage device. The movement is also transmitted by the belt.

FIG. 3 relates to a strip-like paper path and various position fixing devices.

The equipment includes a guide for the paper 21.22, which ends under the printing rollers 11° 12 . When the printed paper strip is ejected, it is moved by rollers 11. head 15 and its Similar to the carriage 13, a carol strip with a motor integrated with the movable chassis 2 (Carroll 5trip) is tensioned by conventional equipment of installation. Carry can be translated on two parallel axes fixed to a movable chassis or frame 2. It is Noh. The motor means of the carriage is a pulley that transmits movement to a notched belt. It is composed of a step motor 17 that rotates I9. The notched belt is suitable for carrying. drive the edge 13 and print head 15. Correct tension on the notched belt is generated. The free play obtained is ensured, for example, by a spring device.

The same components appear symmetrically on the fixed chassis l. The motor 18 is a transmission pulley 20 gives movement to the notched belt. The belt connects the carriage 14 to its counterpart. together with the corresponding print head 16 in a linear translation.

Machines are also equipped with position fixing and reading devices to ensure accurate positioning of machine parts. logical means that control the advancement of the print carrier and control the heads. tell to.

For example, the initial position and format of the list that the sensor 23 has not printed yet. Fix the start or size to give the perception of zero position. Two forked mouths A sensor 25 measures the width of the paper strip, one of which is fixed during installation and the other is movable. Sensor 24 reads the row's initial settings. Finally, the converging obtex An optoelectronic device with a Allows printing to be initialized within the window. Make sure the focus is good. A pressure roller 27 acts on the paper strip to improve the pressure guidance. Ru.

The position of the head mounted on the carriage relative to the printing roller is shown in FIG. 2 two blocks (one integral with the movable chassis 2 and the other fixed on the main chassis l) ) we can see the perfect symmetry between them. Within the latter is the advance of the printing carrier and an electronic card is positioned that controls the head. For example, those may be a European format or size card. These cards are A logical combination of the two heads is implemented, which is the data processing system illustrated in Figure 8. This is done by This diagram shows the various components of the system and their central processing FIG. 2 is a block diagram showing connection to a physical device cPU. Printer works with print carrier However, its width is between 9011 and Italian A4 size.

The print head is fixed to a carriage and moves linearly on two support shafts. A stylus system under the action of a magnetic winding 35 controlled by a mister 36 The system ensures printing on paper, for example. The stylus system is wire guide 33 A wire 32 connected to a stator 34 exerts pressure on the schematic paper.

This system is shown in FIG.

An assembly of two print heads 15.16 joined on either side of the sheet is a programmer. is controlled by software that integrates the "concepts" of front and back sides, and this When the head finishes each row and before the paper can advance, the head advances and the paper advances. control at the same time.

The apparatus of the present invention is realized by the following steps. When applied to electronic typewriter process If the device is connected to the introducer and 1. P, 1. D. System (intern al position of’ the introduced docume nt: internal position of the introduced document). The introducer prints the document. It is a mechanical device that introduces paper used for printing. This paper is standard size Paper, often in the form of a single sheet, reel or continuous list cover with carol strips. charged.

To detect the nature of the introduced paper, the introducer can be equipped with a photovoltaic cell or It is equipped with an optoelectronic sensor as in the case of a printer.

Regardless of the nature of the device, such as printing devices, electronic devices, computer printers, etc. , the paper detection means supplying information to the logic means are circulated in the machine by an electronic unit. It forms the basis for a permanent check of the paper's position, the information of which is 1. P, 1. D, by shown. This 1. P, 1. D. Before emitting information, the system must be processed. query memory containing various types of different sizes.

interpretation ! , P, 1. D, -1 is displayed so that the introducer can type the first line. This means bringing the document paper into position in front of the head.

1, P, 1. D, -40 is an intro so that the type can be hit within 1/40mm This means that the ducer places the paper in front of the obverse head.

1, P, 1. D is the information resulting from the action of the step motor, and The printer is controlled manually in the case of electronic machines, and in the case of printers and computer peripherals. In some cases, it is controlled electronically. Selection of step motors resulting in internal movement of documents depends on the quality selection of the typewriter or printer. This step motor is It can be controlled in forward and backward running directions.

Code of the system of the invention The new code characteristics of the system of the present invention can be transmitted by a machine keyboard or by a printer. is produced by software executed by a computer.

The code showing the different modes is: In table mode; ESC+ESC+r-Return with table only ASCII value: CHR$(27)+CHR$(27)+CHR$(114 ) In back mode: ESC+ESC*v-back only feed ASCI I value: CHR$(27) + CHR$(27) - CHR$(118 ) in simultaneous mode; ESC+ESC+s-simultaneous feed ASCII value: CHR$(27)+C)IR$(27)+CHR$(11 5) Closing code modified for system use; FF-formfeed (End of page) CHR$(12) becomes FF+mode indicator. That is; FF+ESC+ESC+r FF+ESC+ESC+v FF+ESC+ESC+s In the case of a typewriter, data is entered from the keyboard along with its type and shape.

Supplementary function keys are provided for system use.

example: Front key to key in the document to the front and back key to key in the document to the back. these two The function keys of EXCLUSIVB are controlled by logical operators. - There is an OR function (key-in selection for front or back).

Once the key-in mode (front or back) for document editing is determined, the operation The machine sequentially edits the data contained in its buffer memory in the order selected by the data. (previous body processing characteristics are retained).

Once you have decided to edit both the front and back sides simultaneously, you can use the function key provided for this purpose. This mode is displayed on the machine by operating the simultaneous key. this place If so, the machine executes the simultaneous editing program ROM contained in the system's ROM.

Operation principle of simultaneous front and back editing Definition of elements that are implemented and controlled for simultaneous editing.

1. Front typing head that functions in standard mode and moves in both horizontal directions . This print head is a stylus that forms characters by collision printing as described above, or a stylus that forms characters by collision printing as described above, or a Another modification includes a daisy wheel that forms the shape after the hammer.

2. Back printing head with the same characters as the front head mentioned in the previous section.

3. Line feed, form feed and separate feed shown in Figure 3 regarding device 9. Paper advancement system used during printing for front and back document positioning.

The uniqueness of the method of the invention is based on the electronic control of a system common to the two print heads. ing.

The printing mechanism follows the following temporal relationship. Edited by a character generator contained in the machine's ROM The data from the computer is passed through the ink ribbon to the paper on the printing roller. Acting on a stylus or daisy wheel to form and print letters by striking Ru.

The print head adds characters while forming the print line, moving from left to right or right to left. From line to line, move from the beginning of the document to the end.

The up and down movements from row to row are the result of supporting data emitted by the system and providing data. This is called line feed or LF. Therefore, in the case of the system of the present invention, What makes it unique is the line feed control that is common to both print heads.

An electronic card controlled by a microprocessor with a memory system is By the computer in the case of a printer or by the keyboard in the case of a typewriter. Controls and stores all LF instructions provided by the controller. It remembers these LF , establish a priority list for their initiation and performance. Therefore, this superior The a priori list is created for front and back documents, taking into account the number of characters per line upstream of each LF. Regarding each separately.

The system of the present invention allows LF to be performed only when the last character of the longest line is printed. vinegar.

The system also takes into account the physical movement between the two print heads, with the front print head moving to the back print head. Five lines of text (5LF) can be performed before the head is operated. this is a document This also applies to the end of . In other words, the end of the page of the front document is the end of the page of the back document. occurs at least 5 lines before. This number of 5 lines is a rough estimate, but it depends on technology and manufacturing. It can be changed more.

The machine of the invention advances in half line feed. FIG. 9 shows an example of front and back printing.

It concerns directly the processing of ASCII characters and not that of fonts.

This saves memory space and provides flexibility of use not possible with existing machines. Give to the stem. This is also a unique feature of the invention.

A character is stored in terms of its coordinates, the X and Y axes. Place text in documents instead of files It is only necessary to consider the

Maximum degrees of freedom are given to the system. In any direction as shown in Figure 9. It is also possible to print any type of font on both sides at the same time. However, two conditions is necessary.

1. The head must have at least 12 styli.

2. The horizontal spacing must be the same as the vertical spacing.

The chances increase considerably that you no longer need to have the files on your computer. That's because there isn't. Furthermore, the printer can e.g. The connector allows it to easily function as a peripheral for two computers, thus allowing one to One can be of the R3232 type, and the other can be of the parallel centronics type. Before printing It is no longer necessary to merge one of the two central processors. Because the file This is because there is no obligation to create one.

This changes the concept of printing peripherals, which have traditionally been accepted. With such a system allows each of the two solid devices to take responsibility for one side of the print carrier. Ru. As a result of memorizing coordinates, it is also possible to randomly divide jobs for printing on the same side. It is. One computer is responsible for almost the entire page (the other computer is responsible). (excluding lines, windows, words, etc.) can be printed. each one of their respective messages You can use your own color to make the image clearer.

This division of work can be modified infinitely. Also, two separate central processors may You can use the same printer by connecting one to the other with a telephone line, and this Encompasses the prospect of multiple cooperation. For example, if the dockets are on two different computers When two types of data that exist are required, the mark of the card with the specific function that has the data Printing allows you to personalize your docket.

The machine that has memorized two pages (front and back) will start editing as soon as it reads the page end signal. Now. It has a specific character generator.

The present invention is a relatively new concept that has not yet been completely identified and specialized. That is, CADE (computer assisted document ed tion: computer-assisted document editing). This word is used for computers. including publication, editing and processing by. It is domestic, professional, administrative and commercial It has considerable advantages in the field and can be characterized as follows:

1. Specific support, whose processing takes into account multiple constraints.

Metric, American or specific sizes, top/bottom or left/right typing or printing; Pre-printing support, the location of information regarding pre-printed boxes and/or frames that are not sheets; Original documents or bundles of documents that are different from each other, horizontal printing of documents with top and bottom readings, Simultaneous printing of the text on one side of the support and the picture on the other side, according to a given standard, especially for administrative forms Retypesetting the document to match.

2. Certain machines capable of satisfying all of the above constraints in normal use .

3. Specific software depending on the desired application/processing functionality.

In this way, CADE is not just a software, but a complete tool - a carrier solution. Regarding software.

More generally, the above examples are given for illustrative purposes only and may not be practical. The present invention thus encompasses all modifications of the method and means that permit its application. do. Some examples are shown below.

The first thing I learned was that the conventional pressure roller (not shown) was It may be advantageous to replace it with a suction system (which itself is connected to a vacuum source). Ru. Such a system simplifies the construction of the machine and allows the paper to follow its path with the guide itself. It has the advantage of

Printing in multiple colors is possible by using a multicolor strip ink ribbon. It is possible to move from one color to another by moving the head up and down relative to the ribbon. This occurs during printing, and the vertical movement, like other functions of the head, is controlled by the microprocessor. be controlled.

Finally, it is also possible to use a single printing roller, in which case there are two have a small diameter so that the heads face each other.

Regarding the paper detection means, in the description of the embodiment, it is described as an optoelectronic sensor. Although shown, a mechanical sensor may be substituted, in which case a breather Determine the type with the width corresponding to the strip in the horizontal direction and the standard width in the center).

The simultaneity of printing on the two sides of the carrier is independent of the content printed on each side; Only the detection of the end determines the transition to the next page. Similarly, one of the two sides is inhibited. By doing so, it is also possible to limit printing to only the other side. Similarly, micro Use one microprocessor for each head, depending on processor capacity It is also possible to use one microprocessor for two heads. is also possible.

In the case of a connection with a CPU, the system of the present invention can be operated regardless of its nature. To create one, simply add the following to the code used by your existing software: Just add “routine”.

escape if only front printing is required escape r if only front printing is required scape escape vFor simultaneous front and back printing, use eSeape escap e-8 The flexibility in the use of the system of the invention and its structural simplicity are major advantages. This certainly guarantees its patentability.

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Claims (9)

[Claims] 1. Documents edited by machines such as computers or typewriters with memory In a method of printing two mechanical Conventionally provided with means for fixing the position and advancing the print carrier of the assembly. a first electronic provided in said machine for simultaneously controlling the advancement of the forefoot carrier; the cards are assembled, and the movement of the two print heads is in the lateral direction of the carrier; , and furthermore, incorporates a microprocessor and a memory containing programs into the cache. a second electronic device that simultaneously controls the print head according to the text to be printed on the front and rear sides; A method characterized by combining cards. 2. Edited by machines related to computers, typewriters with memory, etc. A device for printing printed text on both sides of a carrier, which includes the carrier and its Mechanical assembly with conventional means of handling advancement and markings on one side of the carrier a first printing group consisting of a printing head and a type roll and a carrier identical to the first; the second printing group marked on the other side of the the mechanical assembly through simultaneous control of directional movement and point-by-point printing of each of the heads; a first electronic card carrying means for controlling the phosphorus, a microprocessor and said a second electronic card with a memory containing a simultaneous control program for the heads; A device characterized by: 3. one of the printing grooves (13, 15) rotates relative to the other part (1) A computer according to claim 2, arranged in part of a movable chassis (2), Devices related to machines such as typewriters with memory, whose rotation is based on cams and rollers. This is done according to the travel limited by the roller system (5), which rollers (5) fixed to a fixed chassis (1) controlled by a device (4) integrated with the chassis (1); , the shape of the movable chassis (2) itself forms a cam and allows the movement of the chassis (2). whereas the second printing group (14, 16) is located on the fixed part of the chassis (1). A device characterized by being integrated with. 4. Printing is done with a single ink ribbon (29) and an ink ribbon cassette (2 8), its outward and return travel is caused by the inclination of the cassette (28) and the ink ribbon ( 29) through the roller device (30) for straightening the two heads (15, 16). ) so that the auxiliary device (31) automatically controls the cassette (28). Apparatus according to claims 2 and 3, characterized in that: 5. Optoelectronic head position settings and paper advance settings are distributed across the machine. Claims 2, 3, and 3 based on information from the Ctronic device. and the device according to paragraph 4. 6. The two print heads (15, 16) are magnetically coupled to a data processing system. A wire guide connected to the stator (34) subjected to the action of the winding (35) Printing carrier with a stylus system incorporating a wire (32) with an id (33) According to claims 2 to 5, the invention is characterized in that printing is performed reliably on a computer. equipment. 7. Claims 2 to 8 relate to horizontal printing of a document with vertical reading. Application of the equipment listed. 8. Concerning simultaneous printing of text on one side of the carrier and illustrations on the other side Application of the device according to claims 2 to 8. 9. The application of the invention to the retypesetting of documents to conform to predetermined standards, especially administrative forms. Application of position.