JPS584384B2 - Jam detection method for office forms - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inserter device mounted on a printing device, in which ledgers and passbooks (hereinafter referred to as office forms) that are inserted onto or ejected from the platen roll of the printing device.

) is related to the jam detection method.

The inserter device guides the left and right edges of an office form with a pair of pockets whose spacing can be freely adjusted, performs insertion or ejection operations, sets designated print lines, and stops operations.

Normally, the operator inserts and sets the end of the office form so that it comes into pressure contact with the joint between the drive roller and pressure roller attached to the pair of pockets, and then inserts and drives the end of the office form into any position on the office form. Whether or not the pairs of pockets are inserted parallel to each other along the guiding force direction depends on whether the distance between the pockets was properly adjusted to the width of the office form when the pockets were inserted and set. Involved.

Further, the office forms inserted and set in the pockets are not necessarily able to receive uniform driving force from the plurality of pressure rollers and drive rollers for insertion and ejection housed in the pair of pockets on the left and right sides. , This obstructs smooth insertion and ejection operations.

In addition, deformation, unevenness in material, and shape of the members of office forms can also cause problems in the insertion and ejection operations within the pocket pairs.

If office forms are guided by the pair of pockets and cannot be inserted and ejected smoothly, jams (clogged or crowded office forms) may occur, resulting in unstable insertion and ejection of office forms. This can cause damage in extreme jams.

In addition, normally, the printing operation of the printing device and the insertion and ejection operation of office forms set in the inserter device are automatically linked, and when the inserter device finishes setting the office forms at the desired printing position. Characters and symbols are printed, but if the jam occurs, the characters and symbols are printed on a different print line from the predetermined print line.

In such a case, replace the ledger, insert new office forms into the pair of pockets to ensure correct printing, and then automatically insert office forms again for the amount printed on the wrong line last time. However, there is a drawback that the printing operation must be re-executed.

In order to solve these problems, conventionally, the insertion and ejection operation of office forms was performed on a trial basis using the inserter device alone, and after confirming that a good operating condition was obtained, automatic insertion and ejection and predetermined printing lines were performed. The stop operation was performed at .

However, even if it is confirmed that the system is working properly in this trial, there is a risk that a jam will occur after the automatic operation is performed many times, and in order to eliminate this jam, it is necessary to This necessarily requires manual operation, which not only places a heavy burden on the operator, but also
It had the disadvantage of slowing down the computer processing speed of forms.

Further, it has the disadvantage that it requires a switch function for alternating between automatic operation and manual operation.

The present invention was developed in view of the above-mentioned drawbacks, and is designed exclusively for automatic operation, which not only reduces the burden on the operator, but also eliminates the switching function, and outputs character symbols when a jam occurs. This is to suppress the amount of re-execution to the minimum limit. In other words, the insertion or ejection drive amount is compared with a set value corresponding to a predetermined length regarding the insertion or ejection force direction of office forms, and the insertion or ejection drive amount is By determining that the amount is within the set value, a stable insertion and ejection operation of office forms is distinguished from the occurrence of a jam.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In FIG. 1, reference numeral 1 denotes a drive mechanism for inserting and discharging office forms, and is composed of a drive roller 2 and a pressure roller 3 built into a pair of pockets of an inserter device.

4 is a pulse motor, and the rotation shaft of the Hals motor 4 and the rotation shaft of the drive roller 2 are connected.

A pulse motor driver 5 supplies a phase-shifted excitation current to the multiple excitation phase drive coils of the pulse motor 4.

Reference numeral 6 denotes a pulse motor limiter which supplies a rotational speed command signal a and a forward/reverse command signal b of the pulse motor 4 to the pulse motor driver 5.

Further, the pulse motor driver 5 has a built-in basic pulse generator (not shown).

7 is a drive pulse counter, which counts the phase shift pulse signal nc sent to the pulse motor 4.

Reference numeral 8 denotes a maximum constant generator, which incorporates a plurality of types of constant generators corresponding to the lengths of operations related to the direction of force for insertion and ejection of office forms.

Reference numeral 9 denotes a switch for selectively specifying a predetermined length of office forms, and since the predetermined length varies, it has a function of appropriately switching to the maximum constant generator corresponding to the predetermined length for practical use.

A comparator 10 compares the output information from the drive pulse counter and the maximum constant generator 8, and the count information e of the drive pulse counter 7 is higher than the maximum value information d of the maximum constant generator.
If this exceeds the limit, a jam signal f is generated.

Reference numeral 11 denotes a stop signal generator for the pulse motor 4, which sends a stop signal g for the pulse motor 4 and a jam occurrence display signal h to the pulse motor controller 6 in response to reception of the jam signal f from the comparator 10.

Reference numeral 12 denotes an electronic computer, which not only controls the insertion and ejection of office forms, but also controls the imprinting of mark stamps corresponding to printed lines, as well as centrally executes most of the controls within the inserter device. have

In order to operate the above-mentioned configuration, it is necessary to send the control command signal k for office documents etc. from the electronic computer 12 to the pulse motor controller 6.
When the pulse motor controller 6 receives this, a reset signal l is given to the drive pulse counter 7 to set the output information of the drive pulse counter 7 to all zero.

Thereafter, a rotational speed command signal a and a forward/reverse command signal b are sent from the pulse motor controller 6 to the pulse motor driver 5 based on the information of the control command signal k from the electronic computer 12. The transfer excitation current is sequentially distributed to each excitation phase drive coil of the pulse motor 4,
The pulse motor 4 is driven to rotate.

Here, since the rotation speed of the pulse motor 4 is determined in proportion to the frequency of the phase shift pulse determined by the rotation speed command signal a, the insertion and ejection drive amount of the insertion and ejection mechanism 1 according to the present invention is determined by the transfer pulse 01 of the pulse motor 4. A relationship occurs that is directly proportional to ~cn.

This phase shift pulse cl~(n is distributed to each excitation phase winding of the pulse motor 4 in a time division manner, but at the same time, as shown in FIG. This outputs a count pulse nc obtained when at least one of the excitation phases of the pulse motor 4 is driven, and this causes the count pulse signal nc to be driven in proportion to the amount of drive for inserting and ejecting the office forms. Pulse counter 7
means that it is being counted.

Further, the comparator 10 constantly compares the count information e of the driving pulse counter 7 and the maximum value information d from the maximum constant generator 8, and in the method according to the embodiment of the present invention, the maximum constant generator 8 When the count information e from the driving pulse counter 7 becomes larger than the maximum value information d from the drive pulse counter 7, a jam signal f is sent to the stop signal generator 11, and the stop signal generator 11 Upon reception, a stop signal g and a jam indication signal h are sent to the pulse motor controller 6.

Upon receiving the stop signal g and the jam display signal h, the pulse motor controller 6 operates to prohibit the transmission of the rotation speed command signal a and the forward/reverse command signal b to the pulse motor driver 5, and at the same time, the The generation indication signal h is sent to the electronic computer 12.

When the jam signal f is generated in this way, the rotation speed command signal a and the forward/reverse command signal b from the pulse motor controller 6 are stopped from being sent to the pulse motor driver 5, so the pulse motor 4 stops rotating. As a result, the operation of inserting and ejecting office forms is stopped.

Further, when normal operation is performed without jamming during insertion and ejection of office forms, etc., the machine is stopped at a predetermined stop position (2) only by the control command signal k from the electronic calculator 12.

As described above, the jam detection method according to the present invention detects the z-count information and the predetermined length while the office forms are being moved for a predetermined length in the direction of insertion, ejection, and transfer. By comparing the maximum constant report corresponding to the above only when office forms are being inserted or ejected and transferred, it can be determined that the magnitude relationship between the two pieces of information is compatible when a jam occurs and when normal transfer occurs. Since the jam occurrence is detected by focusing on the paper jam, the insertion/ejection transport force is immediately stopped at the initial stage of the jam occurrence, so that damage to office books due to the jam state can be extremely reduced.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a structure of a jam detection system for office documents showing an embodiment of the present invention. 1... Insertion/ejection drive mechanism, 2... Drive roller 3... Pressure roller, 4...
Pulse motor, 5...Pulse motor driver, 6...Pulse motor suppressor, 7...
・Drive pulse counter, 8...Maximum constant generator,
9...Switch, 10...Comparator, 1
1...Stop signal generator, 12...Electronic computer, a...Rotation speed command signal, b...Forward/reverse command signal, Ccl~cn... ...phase shift pulse, n
c: Count pulse, d: Maximum value information, e: Count information, f: Jam signal, g: Stop signal , h...Jam display signal, k...--Suppression command signal, l...
...Reset signal.

Claims (1)

[Scope of Claims] 1. In an automatic inserter device that inserts office forms, feeds them to a predetermined printing line, stops, and ejects the paper after printing, there is a physical predetermined physical direction of the insertion and ejection force direction of the office forms. Compare the output information from the following two types of means corresponding to the length: (A) driving pulse counting means given to the pulse motor for driving the insertion and ejection of office paper sheets, and (B) maximum constant generating means. Sending a stop signal to the pulse motor control means in response to power information from the comparison means indicating that the output information of the input comparison means and the drive pulse counting means exceeds the output information of the maximum constant generation means. and a stop signal generating means, the pulse motor control means stopping the insertion and ejection operation of the office forms when the office forms are jammed during feeding. 2. In the jam detection power formula described in claim 1, the maximum constant generation means is capable of generating multiple types of information as output information of the maximum constant generation means, and the multiple types of information are based on the physical information of office forms. A jam detection method characterized in that a maximum constant can be selectively derived from a maximum constant generating means in accordance with a predetermined length of a target.