JPS58208058A - Synchronous print checking device - Google Patents

Abstract

PURPOSE:To obtain a synchronous print checking device capable of operating correspondingly to many kinds of type belts with different type varieties by using a table to discriminate right or erroneous relations of the count numbers of home position signal and timing signal. CONSTITUTION:A print synchronous checking device is made up of a binary counter 1, an AND circuit 4 to obtain the ''and'' of lower rank 4-bits b0-b3 of the output of the binary counter 1 for detecting what the count number of the binary counter 1 reaches 16, and memory 5 to store tables to discriminate right and erroneous relations of the count numbers of home position signal and timing signal for avery kind of type belts. If the kinds of the type belts are of 48-type, 64-type, 96-type, 128-type, and 384-type, the selection of them can be made by three kinds of signals (h), (e), and (f).

Description

[Detailed Description of the Invention] Technical Field of the Invention The invention relates to a print synchronization check system used in type belt printers (〇) Background of the Technology.

Type belt type printers are smaller, lighter and heavier than rotary drum type printers, and are convenient to use.@Gakutoku's i-type printers can achieve 1# values such as easy gloss, and laser printers have come into use. Even today, it is widely used as the main printer for computers, but it remains as a relatively important technique such as increasing the number of printed layers, reducing size and weight, and reducing costs. .

@JlC on the rod belt has 1N384 printed characters written on it. Therefore, for example, for alphanumeric characters, there are 64 printed characters including special symbols: 6 sets of f-pole groups, and For English v, :f- and kana writers, the old character group consists of 12B type characters, including special symbols, or 31! kL is provided 〇 Distribution of old letters on the right hand belt ulIIi! ◎The old letter belt has holes or uneven parts for each R5 letter and active VM group, and these can be detected optically or magnetically. The timing and the home position are controlled, and the cycle of printing is controlled by classifying each type of dark type by one based on the count number of the timing other detected after detecting the Baume position signal.

However, the shadow of foreign noise caused by the increase in printing speed*
Since the detection of the timing signal or the Baum position signal may be erroneous due to S, a print synchronization check device is provided to immediately detect these errors and discover printing errors.

tc) Between the conventional technology and the melting point, the first failure shows the configuration of the print synchronization check & wrinkle control example, 1 is the timer mink @勺 which is delayed in the movement of the type belt and is generated for each type on the type belt. count 9
Digit binary counter, 2 is the count number of the 2-miss counter @
10 conversion circuit converts the 8-bit parallel signals taken from the count numbers of 64, 128, and 384 and their inversions into 10 cycles, 3 is the home position @ and 64 Character active hand belt fingers and feet f [4 directions Q and 384 child support 1
Due to Sakiso's method with the 6-character belt designation number ■, one of the 8 parallel year names ■ will be chosen by Furunaflexa.With the above configuration, 64 hand types, 128 character types, and 3
Regarding the 3AM type type belt with the 84-character building, the timing is checked on the other hand or the Baum position signal detection model is being checked.

However, types of type belts tend to be extremely diverse, including 48 character types, 96 character types, and 192 character types, and it is necessary to develop circuits to be able to handle each type. This is causing problems such as the increase in the number of printers and hindering cost reductions.O 0 Purpose of the InventionThe purpose of the invention is to create a print synchronization system that can be used with the multi-type type belt that has the same type of type, and is inexpensive. O CBr4゜゜ゎゎ ";:...'s misfire E! A elbow print 1-period check device inspection work, multiple types of damage belts 7A selection of active Gakutoku. Use it.

In conjunction with the movement of the type belt, the timing of spending on each right hand on the type belt is determined. In the seven types of type belt type printers that perform synchronous control of printing by classifying the merits of each type according to the count number of timing signals, the home position 1! A table is provided every 871 m of the type belt to identify correct and incorrect correspondence between the number and the count number of the other timing, and the table is used to check the count number of the other timing. ◎ Any ゛) Examples of the Invention Below, the purpose of non-invention will be specifically explained using nine examples.

The second problem shows the configuration of the present Kaji@E-embodiment, where l is the same 2-luck counter as in the conventional example described above, and 4 is the positive difference between the 2-luck power untam position conversion code and the timing @ count number. This is a memory that stores a table for each seat type of the r5-shaped belt, which separates the response and the incorrect response.
48 af, &, 64 characters, 96 characters, 128 characters, a, 192fa, and 384 character types, these selections are 314 type signals as illustrated in the g1 table. , e
This can be done by , Home Bojishi @勺d and gt b4 # bz m l)s, j) Ya and Su.

The timing represented by the correct correspondence with the other count number and the resistance represented by V, f, e and h are identified for each type belt powder.

The incorrect correspondence is indicated by "1".

For example, in the example shown by arrow A in Table 2, the type belt selection signals are f=Qe='l, respectively.
Since tl=Q, it is for a type belt for 64 character poles, and when d=1, that is, the home position signal is detected, s g, bag bagb, , b, and b
The timing signal count number n expressed by OK is 64.
S* other than an integer multiple of is an incorrect correspondence. Also, the tari indicated by arrow B is similarly for the type belt for 64 hands, and d = 0, that is, the home position is 17 times. If the count number of the timing @sign is an integral multiple of 64 even though the signal is not detected, it indicates that the baby is pregnant due to an incorrect correspondence.0 The memory 5 that records such a chifur is set to 4. It can be made in time by the degree of h Obi, and it can be made to correspond to the type belt in 8 sheets type 1. An inexpensive print synchronization check device that can handle type belts of the same type as perforated printers has been developed, and the cost of type belt type printers can be reduced.

[Brief explanation of the drawing]

1 shows a conventional example of a print synchronization check device, and FIG. 2 shows an uninvented example, and 5 is a memory.

Claims (1)

[Claims] Selecting and using a plurality of type belts with different academic virtues,
In conjunction with the movement of the type belt, the timing @ symbol generated for each type on the iron live potato belt and the home position signal generated for each active 5Fm group are detected. Home position H'/%! In a type belt type printer that performs synchronous control of printing by identifying the character type of each type based on the count number of the timing signal detected after detecting the home position signal and the timing signal, It is recommended that a table be set up on the printing plate of the type belt to distinguish between correct correspondence and incorrect correspondence with the count number, and use the 1m table to check the count number of the timing coefficient. Print synchronization check!t.