JPS6287366A - 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 This invention relates to a printer that can use multiple types of ribbons.

Generally speaking, in type wheel type printers used as receive/on-quick (R10) printers or electronic typewriter printers, multiple types of ribbons are used, such as multi-type ribbons and one-time ribbons (Collectible Ribbon J). There are some products that can be used.

By the way, in a type wheel type printer, since each type character has a different area, the density of each printed character will differ if printed with the same printing pressure.

Therefore, in conventional printers, in order to print with a printing pressure that corresponds to each character to achieve uniform print density, a printing pressure table is created that converts character information into a printing pressure that corresponds to that character (character 1). It is equipped with

However, even with this method, in printers that can use multiple types of ribbons, for example, multi-strike ribbons and collector ribbons will produce different densities even when printed with the same printing pressure, so the print density will vary depending on the ribbon used. There is an inconvenience that they are different.

1--Purpose- This invention has been made in view of the above points, and an object thereof is to improve printing quality.

In order to achieve the above object, the present invention is provided with a function of creating a printing pressure table according to the ribbon type from one printing pressure table.

Hereinafter, a detailed explanation will be given based on one embodiment of the present invention.

FIG. 1 is a block diagram showing one embodiment of the present invention.

This printer is equipped with a printing pressure table storage means A that stores one printing pressure table for converting a character code into printing pressure information, and a printing pressure table creation means B stores the printing pressure table stored in the printing pressure table storage means A. A printing pressure table corresponding to the type of ribbon is created based on the pressure table and stored in the table storage section C.

FIG. 2 is an external perspective view showing an example of an electronic typewriter equipped with a printer embodying the present invention.

This electric typewriter holder, lower case 1 and l) 1
--Inside the case, there is a keyboard 3 for inputting -☆ character information and control information, and an oil leak display (L) for displaying data input by this keyboard 3.
It is equipped with a type wheel type printer 5 for printing information such as CI)) equipment 2 and 4, etc.

In addition, a cover 6 that can be opened and closed for replacing the type wheel or ribbon of the printer 5 is attached to the first side of the case 2, and a paper sheet that guides the left edge of printing paper is attached to the upper rear surface of the case 2. The paper guide 7 with the edge guide 78 is attached.

A RAM cart 8 serving as an external document memory for storing friend letters can be attached to the back of the paper guide 7.

In addition, on the keyboard 3, there are keys such as lJ, A/N keys 11, etc., a collection key 12 for instructing deletion of characters, a memory key 13 for instructing registration of sentence IF (text, )1 nose, format), and other keys. It is provided with a code key 14 that gives various instructions in combination with keys, and various other function keys.

FIG. 3 is a perspective view showing an example of a mechanical section of the printer 5. FIG.

This mechanical section is rotatably mounted with a platen 22 that wraps and feeds paper to be printed between frames 1s21 and 21 attached to both sides of the subframe 20.

This platen 22 is connected to an idle gear 25 which is meshed with a motor gear (not shown) by a line feed motor 23 consisting of a stepping motor fixed to the frame 21.
It is rotationally driven via a platen gear 27 that meshes with an idle gear 26 that moves together with this idle gear 25, and automatically feeds the paper.

Furthermore, manual operation knobs 28.28 are attached to both ends of the platen 22, and by turning the knobs 28.28, paper can be loaded or removed manually.

Further, in front of this platen 22, a pail roller 30 is provided.
The paper pail 31 fitted with the paper pail 31 is supported at both ends by bails 32 and 32, and is urged toward the platen 22 by a pail drive mechanism (not shown) so as to be swingable.

On the other hand, a five-carriage 35 is mounted on the rod 33 and stay 34-h fixed between the frames 21 and 21 so as to be movable in parallel with the platen 22 in its axial direction.

This carriage 35 has a cassette type type wheel 36.
, a selection motor consisting of a stepping motor that rotates the type wheel 36, which will be described later, a print hammer that hits the type on the type wheel 36, a ribbon cartridge 41 loaded with an ink ribbon 40, a ribbon feed mechanism, a collection mechanism, etc. ing.

In addition, as the ribbon 40 of the ribbon cartridge 41,
Can be used with either multi-strike ribbon or one-tie 11 ribbon (collector pull ribbon).
1 A space motor 45 consisting of a stepping motor is attached to a mounting plate 42 fixed to the subframe 2o, and a gear 46 is placed on the rotating shaft of the space motor 45.
A space pulley 48 having a gear 47 meshing with 10
On the other hand, two pulleys 50 and 51 are rotatably supported by a support (not shown) fixed to the frame 21, 21.

These space pulleys 48 and IJ 50.

A space wire 53 is stretched between the space wires 51 and 51, and the space wire 53 is fixed to the front bottom surface of the carriage 35, and the space motor 45 moves the carriage 35 to the platen 22.
move parallel to.

FIG. 4 is an exploded perspective view showing details of the carriage 35.

Carrier frame 61 that constitutes the main body of carriage 35
A front frame 62, which is slidably fitted onto the rod 35, is swingably mounted on the ^11 side of the rod 35 by a pin 66, and is biased forward by a spring 64.
2 includes a selection motor 66 consisting of a stepping motor that rotates the type wheel 3B, a printer that hits the type on the type wheel 36, a hammer (print hammer billet) 67, and a print hammer magnet that drives the print hammer 67. 1-68, a return spring 69 for double action of the printer 1-hammer 67, and a detent hammer (not shown) for retentating the gear interposed between the compression motor S6 and the type wheel 36, and this detent hammer. A selection hammer unit 70 consisting of a detent hammer magnet etc. that moves 197 is attached.

Further, at the front lower part of the carrier frame 61, a cassette I foot 71 for holding down the cassette of the type wheel 36 and a selection bow 11 sensor 72 for detecting the baud position of the type wheel 36 are installed.

Further, a card boulder 73 is attached to the front upper part of the carrier frame 61, and this card holder 73 has a paper guide surface 73a that guides paper and a tape guide that guides a correction tape (collection tape) to be described later. Part 73
It has b.

- On the rear upper surface of the carrier frame 61.

Cassette presser 7 for holding the ribbon cartridge 41
4 (on both sides, but only one is shown) is attached 6. Also, inside this carrier frame 61.

A ribbon foot mechanism 75 is attached. This ribbon feed mechanism 75 includes a ribbon feed motor 77 consisting of a stepping motor attached to a mounting plate 7B attached to the carrier frame 61, and a ribbon feed motor 7
A gear 7S that meshes with a gear 78 fixed to the rotating shaft of 7,
It consists of a gear 80 that meshes with this gear 79, a drive gear 81 that meshes with this gear 80 and rotates a drive shaft inside the ribbon cartridge 41, and the like.

A plate 84 that also serves as a lid for the ribbon foot mechanism 75 is attached to the rear upper surface of the carrier frame 61, and a ribbon identification 51 consisting of a micro-sinch for detecting the type of ribbon cartridge 41 is installed inside the plate 84.
11 switch 85, its operating piece 85a is connected to plate 8.
1 is installed so as to protrude from the through hole 84a of 4 in the 1: direction.
Note that in the ribbon car 1-ridge 41, for example, if it is a multi-strike ribbon car 1-ridge, a through hole is formed at n corresponding to the ribbon identification switch 85; For example, no through hole is formed at the position corresponding to the ribbon identification switch 85. Thereby, by turning on/off the ribbon identification switch 85, one type of ribbon and two types of ribbons can be identified.

In addition, a τj bond end sensor 86, which is a reflective photosensor that enters inside the ribbon cartridge 41 and detects the end of the ribbon 40 when installed, is attached to the side surface of the carrier frame 61 using a mounting plate 87 or the like. It is.

Then, a collection mechanism 90 is installed in a part of the middle part of Kiheriawa 1-no-8 61.

This collection mechanism 90 rotatably supports both sides 93a and 93b of a swinging play 1-93 on collars 91 attached to both sides of the carrier frame 61, and this swinging play 1-93 is attached to the carrier frame 61. Fixed mounting plate 8
A tension coil spring 94 interposed between the main body 7 and the main body 7 rotates forward.

Guide levers 95 and 95 are integrally molded on both sides 93a and 93b of this swing plate 93, respectively, and a guide roller 96 for guiding the collection tape is attached to the tip of each of these kite levers S5. There is.

Further, the center portion of the swing plate S3 is connected via a connecting lever 98 to a plunger 97a of a collect ribbon magnet 97 fixed to the attachment plate 7 of the ribbon feed mechanism 75.

In addition, this connection lever 9th collect ribbon magnet]
The 97 side is rotatably supported by pins, while the swing plate 93 side is fixed with screws 100.

Furthermore, both sides 93a of this swing plate 93.

The spool 102.1 is attached to the shaft 101 installed on the outside of the 93h.
03 is rotatably fitted.

Inside the delivery side spool 102, a tension spring 1 [14] is inserted which biases the spool 102 to rotate in order to apply tension to the luxion tape.

On the other hand, a ratchet gear 103 is formed on the outer periphery of the first take-up side spool 103, and a swing plate 93
A feed claw 105 that engages with the ratchet gear 103a of the take-up spool 103 is swingably attached to the side portion 93h of the winding spool 103.

Note that this feed claw 105 is attached to the side portion 9 of the swing plate 93.
') A tension coil spring 106 is attached between b.
The tip of the spool 103 is pressed toward the ratchet gear 103a.

Also, the ratchet gear 1 of this winding side spool 103
The jφ rotation p11 +l that engages with 03a is swingably attached to the mounting plate 87 fixed to the carrier frame 61, and its tip is ratcheted with a spring or the like (not shown).
It is suppressed toward the gear 106a side.

A pulley 111 around which a collection tape 110 made of a peel-off tape (a tape that can be coated is also acceptable) is wound around these sending-out spool 102 and a take-up spool 103, and a pulley 111 to which the tip of the collection tape 111 is fixed is attached. 112 is fitted.

The collection tape 110 is attached to the sending pulley 1
11 and guide roller 96. of one guide lever 95. Card guide 73. The winding side pulley 112 is stretched through the guide roller 96 of the other guide lever 95.

Next, the operation of the collection mechanism 90 constructed in this way will be explained with reference to FIGS. 5 and 6.

At times other than collection, the collector ribbon magnet 1 97 is in an off state (no current supplied), and the collection mechanism 90 is in the state shown in FIG. 5.

Therefore, the traction tape 110 is located below the impact position by the print hammer 67, and only the ribbon 40 is located at the impact position.

Thereby, the print hammer 67 causes the type wheel 3 to
By impacting the required type 36d of 6,
The printed characters 36a are struck onto the paper on the platen 22-H via the ribbon 40, and desired characters are printed on the paper 1-.

On the other hand, during collection, the collection ribbon magnets 1 to 97 are turned on by a control section, which will be described later.

As a result, this collection mechanism 90 is a collection ribbon magnet! -97 plunger 97a is pulled, the swing plate 93 swings in the direction of the arrow in FIG. 5, and as shown in FIG. Due to impact and position.

At this time, the swinging of the swinging plate 93 causes the feed pawl 10 to
5 feeds the take-up side spool 103 by a distance corresponding to the swing μ of the swing plate 93.
φ turn 1! tl +l- Because it is held in position by the pawl 107 = luxion tape 110 is attached to the spool 10
The amount of rotation of the pulley 112 corresponding to the amount of rotation of 3 is fed.

In this case, due to the rotation of the 5 spool 103, Boo I+ 1
When winding up the collection tape 110, the collection mechanism 90 is configured such that the maximum of the printing characters 36a of the printing wheel 36 is an amount smaller than the character width, for example, 172 to 1/3 of the character width. forming an element.

After the collection tape 110 is positioned at the impact position in this way, the printed characters of the characters to be deleted are impacted by the print hammer 67, so that the printed characters are attached to the ribbon 40 and the collection tape 110 located in front of the ribbon 40. Since the characters are struck onto the paper on the platen 22 via the correction tape 110, the characters printed on the paper are peeled off and erased.

FIG. 7 is a block diagram showing the control section of this electronic typewriter.

The main controller 1 roller 120 includes a mask microcomputer (hereinafter referred to as "master microcomputer") 121, a slave microphone "1:1 computer (hereinafter referred to as slave microcomputer 1) 122, a ROM 123,
It is equipped with an AM 124, a buffer 125, a printer 11012G, a T210 (receive/on queue) boat 127, and the above-mentioned R and AM cards 8, etc., which are installed as appropriate.

A mask microcomputer 1211:1 is in charge of overall control such as document creation, registration, readout control, and printer 5 control in this electronic typewriter.

The slave microcomputer 122 is connected to the liquid crystal display device 4
Controls display control.

The liquid crystal display device 4 includes a liquid crystal display element panel 130
, driver ■, segment decoder 13 as ST
This is a T, CD module consisting of a 1, 15, 15, 132, a microcomputer 133, etc.

The ROM 123 is a ROM having a capacity of, for example, 12 bytes, and is used for the production of text on a typewriter, etc., and the printer computer that controls printing by the printer 5. 1 - mouth = 15 = 1 character generator, which converts the character code into a character pattern displayed on the liquid crystal display device 4, and one printing pressure table, which converts the character information into printing pressure, and converts it into the amount of space. It stores court conversion tables such as a proportional space table, a wheel address table for converting to a wheel address, and a ribbon feed amount table for converting to a ribbon feed rate.

The RAM 124 is composed of two RAMs having a capacity of, for example, 2 bytes, and one of the RAMs stores a working area for program execution, a creation printing pressure table area for storing a creation printing pressure table, and data. The other RAM is backed up by a battery 128 and used as a book memory for registering document (text, phrase, format) files and directories.

The R,/O board 127 receives data input from various parts such as the r<, oM 134, which stores control programs for using the printer 5 of this electronic typewriter as a receive/on-quick (R10) printer. interface (1/l?) circuit 135 and T/(
') 136.

RAM card 8 is RAM1 for IP recording of documents, etc.
38 and a battery of 171 days to back up this 12 A M 1 8.

Then, the mask microcomputer 121 takes in the key information input from the keyboard 3, displays that person's data on the liquid crystal display device 4 through the slave computer 122, and also displays the input data. Each part of the printer 5 is controlled according to the #+ control.

That is, the mask microcomputer 121 outputs selection drive data to the selection driver 141 via T10126 to drive and control the selection motor 6, rotates the type wheel 3G in a predetermined direction by the required amount, and prints the desired type. position where it will be hit by the printing hammer 67.

The mask microcomputer 121 also outputs a detent drive pulse to the detent hammer driver 142 via T10126 to drive the detent hammer magnet 1.
43, the detent hammer 144 detents the gear interposed between the type wheel 36 and the selection motor 66, and in this state outputs a print hammer drive pulse to the print hammer driver 145 via l10126 to drive the print hammer. magnet 6
8 is controlled by one drive to cause the print hammer 67 to hit a desired type character on the type wheel 36.

Furthermore, the master microcomputer 121 communicates with the collector ribbon lift driver 147 via T10126! A collection ribbon lift drive pulse is output to drive and control the collection ribbon magnet 97 to position the collection tape 110 at the collection position as described above.

Furthermore, this mask microcomputer 121 is T101
A ribbon feed drive pulse is output to the ribbon feed driver 14 via the ribbon feed driver 26 to drive and control the ribbon foot motor 77 to feed the ribbon 40.

Further, this mask microcomputer 121 outputs space drive data to the space driver 14 via T10126, drives and controls the space motor 45, and moves the carriage 35 by a predetermined amount.

Furthermore, this mask microcomputer 121 pieces, l10126
to line feed driver 150 via line feed 1 (outputs live data to line feed motor 2)
1 drives and controls the mask microcontroller 121 to rotate the platen 22 in a predetermined direction as required.
via 110126 to ribbon end sensor 86. Selection home sensor 72. space home sensor 1
51. Cover open switch 152. Detection signals from each sensor such as the ribbon identification switch 85 are taken in, and control is performed according to each of these detection signals.

Next, a different example of the pudding 1-hammer 1 driver 145 will be described with reference to FIGS. 8 and 9.

The print hammer driver 145 shown in FIG.

This is a circuit that can change the printing pressure by controlling the pulse width.

In this print hammer driver, when the hammer drive pulse HAM (low active) from the main controller 120 in FIG.
2, is input to transistor Q1 via buffer B1 and resistor R1, and transistor QI is turned on.

At the same time, the hammer drive pulse HAM is input to the transistor Q2 via the inverter T N V 3 +buffer B2, and the transistor Q2 is turned on.

As a result, while the hammer drive pulse HAM is input (“L”), the print hammer magnet 6
8 and the print hammer 67 is driven.

In addition, resistor R2 converts the current flowing through the print hammer magnet 68 into voltage, resistors R4 and R5 divide the constant voltage +V to generate a reference voltage, and resistors R6r and R? +
A constant current is supplied to the print hammer driver 1-68 by controlling the transistor QI using the capacitor CI, the comparator COM, and the like.

In this print hammer driver, by changing the pulse width of the hammer drive pulse RAM from the main controller 120, the ON time of the transistors Ql and Q2 can be changed and the power supply time to the print hammer magnet 68 can be changed. The printing pressure can be changed by controlling the pulse width of the HAM.

Note that when the hammer switch ll5W is turned on, the transistor Q1 is fixed in the off state, and no power is supplied to the print hammer magnet 68.

The print hammer driver IJ shown in FIG. S is a circuit that can change the printing pressure by controlling the current value.

In this print hammer driver, when a hammer drive pulse HAM (low active) is input from the main controller 120 in FIG.
Transistor Q:, via N V s and resistor R9.
is input, and 1 Heransister Q3 turns on. .

In step 1, three pieces of printing pressure data IIAMI-IIAM3 are input from the main controller 1 roller 120 to the analog switch As.

This analog switch AS has hammer drive pulse +
1 A Each has a different resistance value when applied manually 8
resistors RIn-T? , the corresponding resistance Rn among 17
Select (n:=1(1~,7)6) Then, the selected resistor Rn and resistor ■?, +o + R
The output voltage of the amplifier circuit composed of Ig and operational amplifier 01)1 changes depending on the value of the selected resistor Rn.

Therefore, a current corresponding to the resistance value of the resistor Rn flows through the transistor 5, into which the output voltage of the operational amplifier OP I is input through the resistor 12.2, and flows through the resistor I through the resistor 1-1. Powered by transistor Q4.

As a result, ]-transistor Q3 turns on-)
Print Hammer Magnet 6th Powered Print 1
The hammer 67 is driven, and the current that flows at this time (J selected 41 and anti-Rn 11 (corresponding to the current value).

In addition, resistors R22 to R2+i and operational amplifier (') 1
1 detects the flow of the print hammer magnet 6 and applies feedback to the operational amplifier 01 to supply a constant current to the print hammer magnet bar 68 by k.

In this way, this print hammer driver outputs the main knee 1 roller 120 or six required printing pressure data l-I A M 1 to '3. J:
-), it is possible to change the printing pressure by changing the value of the current flowing through the hammer magnet ll;8.

Next, the operation of this embodiment constructed in this way will be explained with reference to FIG. 10 and the fermentation section.

If you are talented with this electronic printer/f writer, R CI M
One printing pressure table of 0 stage jjv is stored in the code conversion table area of l2B.

Therefore, the master microcomputer 121 of the main non-troller 120 executes the printing pressure table creation process shown in FIG. 10 as part of the initial A1 process executed after, for example, the power supply is inserted and the cover 6 is opened/closed.

In this printing pressure table creation process, the ribbon identification switch 8
Ribbon cartridge 41 loaded after reading the state of No. 5
It is determined whether the ribbon 40 is a multi-strike ribbon or a collector (one-time) ribbon.

If the ribbon 40 is a multi-strike ribbon, a printing pressure table for multi-strike ribbon divided into m stages of printing pressure in proportion to the area of each type is created and stored in the RAM.
124 and stored in the printing pressure table 117.

Furthermore, if the ribbon 40 is a collector pull ribbon, a collector pull ribbon printing pressure table is created that is divided into m stages of printing pressure in proportion to the area of each type, and the printing pressure is 12 A M 1.
2 Store in the created printing pressure table area of 4.

Note that the printing pressure stage m of the printing pressure table to be created is stored in advance as fixed information, but for example, by detecting the type of type wheel (manual setting or automatic identification),
It is also possible to change the stages by

That is, for example, as shown in FIG. 11, 1. ! (1M
In the code conversion table area of 123, a printing pressure table with n (n=+3) steps shown in the same figure (a) is stored, and it is divided into 1m (m=7) steps in proportion to the area of each type. The most suitable FJ1 printing pressure for rn stage type is shown in the same figure (a)! Depending on the type of ribbon, read out the 1-stage printing pressure table or the multi-strike ribbon printing pressure table shown in Figure 1 (1) or the 1 level printing pressure table shown in Figure 1 (C).
Create a printing pressure table for 1-tuple ribbon.

At this time, at the same printing pressure, the printing density of the multi-strike ribbon will be darker than that of the collector ribbon, so the printing pressure table for the multi-strike ribbon will have a relatively lower printing pressure than the printing pressure table J for the collector ribbon. Become.

Note that the printing pressure table for multi-strike ribbon and the printing pressure table for collector pull ribbon are always created without distinguishing the type of ribbon 40, or the type of ribbon 40 is identified in the same way as described in -11, and multi-strike is performed. It is also possible to store the ribbon printing pressure table and the collector pull ribbon printing pressure table in separate areas so that both of them can be held.

Next, another example of the printing pressure table creation process will be described with reference to FIG. 12.

In this printing pressure table creation process, first the ribbon 4 to be used
Determine the type of 0.

If the ribbon 40 is a multi-strike ribbon, after creating a multi-strike ribbon printing pressure table, based on this multi-strike ribbon printing pressure table, a multi-strike ribbon high-level printing pressure table with a relatively high printing pressure is created. Create a low-level printing pressure table for multi-strike ribbon with relatively low printing pressure, and store it in RAM12.
4 Create and store in the printing pressure table area.

In addition, if the ribbon 40 is a collector pull ribbon, after creating a collector pull ribbon printing pressure table, based on this collector pull ribbon printing pressure table, a collector pull ribbon high level printing pressure table with a relatively high printing pressure and a A low-level printing pressure table for a collector pull ribbon with a relatively low printing pressure is created and stored in the created printing pressure table area of the RAM 124.

That is, for example, as shown in FIG.
n (n) shown in the same figure (A) in the code conversion table area of
=13) stages of printing pressure tables are stored and divided into m'(m':=9) stages in proportion to the area of each type.

Then, the most appropriate printing pressure for this m' stage type is determined in the same figure (
If the type 5111 of the +1 bond 40 to be used is a multi-strike ribbon, read from the n-stage printing pressure table shown in (a), if the type 5111 of the +1 bond 40 to be used is a multi-strike ribbon, the multi-strike ribbon as shown in the same figure (b) of m' stage 1 (1 yen) Create a printing pressure table for

Based on this multi-strike ribbon printing pressure table shown in Figure (b), a high level printing pressure table for multi-strike ribbon in m stages as shown in Figure (c) and a multi-strike ribbon printing pressure table as shown in Figure (d) are created. Create a low-level printing pressure table for multi-strike ribbon.

Similarly, if the type of ribbon 40 to be used is a collector-pull ribbon, a collector-pull ribbon printing pressure table as shown in FIG.

Based on the collector pull ribbon printing pressure table shown in the same figure (e), a collector pull ribbon high level printing pressure table of m stages as shown in the same figure (f) and a collector pull ribbon printing pressure table as shown in the same figure (g) are prepared. Create a low-level printing pressure table for collector pull ribbon.

At this time, the printing pressure of each printing pressure table is relatively high.High level printing pressure table for collector pull ribbon〉low level printing pressure table for collector pull ribbon〉High level printing pressure table for multi-strike ribbon〉 This relates to the low-level printing pressure table for multi-strike ribbons.

In this case as well, high-level printing pressure tables and low-level printing pressure tables for multi-strike ribbons and collector pull ribbons are always created without determining the type of ribbon 40, and the type of ribbon 40 is also determined. It is also possible to hold all the high-level printing pressure tables and low-level printing pressure tables for each multi-strike ribbon and collector pull ribbon.

Furthermore, by specifying which of the high-level printing pressure table and the low-level printing pressure table to be used, for example, by using a print density designation key provided on the keyboard 3, etc., the main controller 120 side can select the specified printing pressure table. Select and use.

Furthermore, the selection can be made manually or by automatic paper thickness detection depending on the thickness of the printing paper used, or by manual or automatic detection depending on the type of type wheel.

Note that automatic detection of the paper thickness can be performed by detecting the distance between the platen and the carriage (printing hammer) if the printer can adjust the distance, for example.

Next, a description will be given of the pressing daple at the time of collection in this electronic typewriter.

11 The truncation operation is based on the collector pull (
This is an operation for correcting characters printed using a ribbon (MULTIS 1 to LIKE) by reprinting the same type at the same printing position using a correction tape.

Therefore, printing and correction printing are performed twice or more times at the same printing position (for example, correction printing may be performed three or four times to improve correction quality).

However, in general, correction printing is performed using the same printing pressure table during collection as when printing.
The paper may get pulled in and sometimes be damaged.

Therefore, in this electronic typewriter, collection is basically performed using a printing pressure table having a relatively lower printing pressure than the printing pressure table during printing.

For example, if a printing pressure table is created by the printing pressure table creation process shown in FIG. 10 or FIG. ＃-Reru.

0) Multis 1-Like Ribbon Pressing Table holds either collector pull ribbon printing pressure table.

■ Holds both the multi-strike ribbon printing pressure table and the collector pull 11 Bonkawa printing pressure table.

(2) Holds either the high level printing pressure table and low level printing pressure table for Multis 1-Like 11 ribbons or the high level printing pressure table and low level printing pressure table for collector pull ribbons.

■ The number of high-level printing pressure tables and low-level printing pressure tables for multi-strike ribbons τF holds all the c, f-level printing pressure tables and low-level printing pressure tables for collector pull ribbons.

Therefore, at the time of collection, in the case of ■, use the multi-strike 1-like river printing pressure table, in the case of ■, use the low level printing pressure table for collector pull, and in the case of -3■- ■, use the multi-strike high level or low 1
A novel printing pressure table or a collector pull low level printing pressure table may be used as the collection printing pressure table.

In the case of (-0), a printing pressure table with a relatively low printing pressure relative to the collector pull printing pressure table may be created and maintained as a collection printing pressure table.

Of course, in the cases of ■ to ■, a dedicated collection printing pressure table may also be provided.

Here, an example of the collection process when the table creation process shown in FIG. 12 is performed and all printing pressure tables are held will be described with reference to FIG. 14.

In this collection process, first of all, we already have Multis!・Create a printing pressure table for like ribbon. Determine whether or not it is held. If there is a printing pressure table for multi-strike ribbon, select the low-level printing pressure table for multi-strike ribbon, and also print pressure table for multi-strike ribbon. If there is no printing pressure table for collector pull ribbon, select the low level printing pressure table for collector pull ribbon and perform the collection operation.

In this way, at the time of correction, a printing pressure table having a relatively lower printing pressure than the printing pressure table used for printing is used to perform the correction operation.

This eliminates unevenness and damage to the paper, improving the quality of corrections.

In addition, even if you do not create a printing pressure table according to the ribbon type from one printing pressure table like this electronic typewriter and have one printing pressure table for printing in your fist, the printing pressure table will be higher than the printing pressure table for printing. A similar effect can be obtained by providing a collection printing pressure table with a relatively low printing pressure.

In this way, this electronic typewriter creates a printing pressure table according to the ribbon type from one printing pressure table, so it is possible to print with the printing pressure according to the ribbon used and to eliminate the difference in printing density due to the difference in ribbon. This can improve printing quality and eliminate the need to prepare each printing pressure table in advance.

What?1t? In the tenth embodiment, an example was described in which the present invention was implemented in an electronic tie/"y ita", but it can be similarly implemented in a receive/only (R/O) printer.

In addition, in the embodiment described in -1-, the present invention was described using a ribbon [an example in which the present invention was implemented in an electronic typewriter capable of using a multi-strike ribbon and a one-time ribbon], but the types of ribbons are as follows. It is not limited to hats.

Effects As explained above, according to the present invention, printing quality is improved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is an external perspective view showing an example of an electronic typewriter embodying the invention, FIG. 3 is a perspective view showing the printer mechanism, and FIG. 4
The figure is an exploded perspective view showing details of the carriage, and FIGS. 5 and 6 are side views showing the operation of the collection mechanism. Fig. 7 is a diagram of the control section c)) of this electronic typewriter, Figs. 8 and 9 are circuit diagrams showing different examples of the printer 1-hammer 1-driver, and Figs. Figure 11 is a diagram illustrating an example of table creation processing. Figure 14 is a diagram showing an example of collection processing. 3. Keyboard 4. Liquid crystal display device 5. ...Printer 8...RAM car 1
・22...Platen 35...Carriage 36
...Type wheel 40...Ribbon 70...Selection hammer unit 1-75...Ribbon feed mechanism 90...Collection mechanism 120...Main controller 1 roller 123...ROM 124...RAM 12th Figure 13 (b)
(c) 7 (ni) 7

Claims (1)

[Scope of Claims] 1. In a printer capable of using multiple types of ribbons, there is provided a printing pressure table storage means storing one printing pressure table for converting character information into printing pressure information, and a printing pressure table storage means for storing one printing pressure table for converting character information into printing pressure information. 1. A printer comprising: printing pressure table creation means for creating a printing pressure table according to the type of ribbon based on the stored printing pressure table. 2. A patent claim in which the printing pressure table creation means also includes means for creating a printing pressure table with relatively high printing pressure and a printing pressure table with relatively low printing pressure based on the printing pressure table according to each ribbon type. The printer according to item 1 in the scope of . 3. The printer according to claim 1 or 2, further comprising means for using, as a printing pressure table during collection, a printing pressure table having a relatively lower printing pressure than the printing pressure table during printing.