JP3198153B2 - Recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus capable of replacing a plurality of types of duplex units.

[0002]

2. Description of the Related Art A recording apparatus having a double-sided unit for reversing a recording sheet and recording characters and images on both sides of the recording sheet is used. The double-sided unit of such a recording apparatus is usually incorporated in the machine body and remains fixed. In addition, there is a type in which the duplex unit can be replaced together with the paper feed cassette, but only one type of the duplex unit itself can be used.

[0003]

As described above, in the conventional recording apparatus, since the double-sided unit is determined as one type, the recording speed is also fixed, and the recording speed cannot be changed. It did not always meet the needs of the user.

The present invention has been made to satisfy such a demand, and has as its object to provide a recording apparatus capable of easily changing a recording speed.

[0005]

A recording apparatus according to the present invention is a recording apparatus having a plurality of types of double-sided units, a double-sided unit control section, and a main body control section. The sheet is turned over and sent to the main body, has one or a plurality of motors and reversing means, is detachable from the main body, and the duplex unit control section controls the operation of the duplex unit mounted on the main body. It is controlled by communication with the main body control unit. The control unit has a control unit, a motor driver, and a detection unit. The detection unit detects the mounting of the double-sided unit and the type of the double-sided unit. The motor driver is controlled according to the type of the duplex unit.

[0006] The mounting and type of the duplex unit may be determined by a unique signal line provided in the duplex unit.

Further, it is preferable that communication between the main body controller and the duplexer controller be disabled when the duplexer is not mounted on the main body.

Further, it is desirable that the communication between the main body control unit and the duplex unit control unit be performed without the duplex unit mounted and with a communication code predetermined according to the type of the duplex unit.

[0009]

In the present invention, a plurality of types of double-sided units are made detachable from the main body, and the mounting of the double-sided units and the type of the double-sided unit are detected by the detecting means of the double-sided unit control unit. Control according to.
Also, unique signal lines are provided in a plurality of types of double-sided units, and the mounting and type determination of the double-sided units is determined based on signals from the respective signal lines. When the duplex unit is not mounted on the main unit, communication between the main unit control unit and the duplex unit control unit is disabled so that unnecessary communication is prevented. Further, when communication between the main body control unit and the duplex unit control unit is performed by a predetermined communication code, the main body control unit can automatically know that the duplex unit is not mounted and the type of the duplex unit.

[0010]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention. As shown in the figure, the recording apparatus has a main body 1 and, for example, two types of double-sided units 2 and 3. The main body 1 is for recording characters and images on recording paper, has a double-sided unit mounting section 4, and has a double-sided unit 2 or a double-sided unit 3 detachable. The two-sided units 2 and 3 are for reversing the recording paper on which the recording has been completed on the front side and sending the inverted recording paper to the main body 1. The transport rollers 5 and 6, the reversing roller 7, and the recording paper detection sensors provided on the transport path 8 and a recording paper detection sensor 9 provided on the reversing path.

Then, as shown in the block diagram of FIG.
The double-sided unit 2 has a motor 10 that can rotate forward and reverse.
The transport rollers 5, 6 and the reversing roller 7 are driven by the motor 10. The double-sided unit 3 has a motor 10 that can rotate forward and reverse and a motor 11 that rotates only forward. The motors 11 drive the transport rollers 5 and 6, and the motor 10 rotates the reverse rollers. Drive only the roller 7; Therefore, only one sheet of recording paper always enters the double-sided unit 2 and the transport speed is low, but the cost can be reduced. Conversely, by controlling the two motors 10 and 11 individually, the two-sided unit 3 can put two sheets of recording paper in the two-sided unit 3 at the same time. .

As shown in the block diagram of FIG. 2, the main body 1 has a main body control section 12 and a double-sided unit control section 13. The main body control section 12 controls the recording operation of the main body 1 and has a CPU 14. Double-sided unit control unit 13
Controls the reversing operation of the duplex units 2 and 3 and has a CPU 15, a motor driver 16 and a detection switch 17. The detection switch 17 is, for example, a dip switch. When the duplex unit 2 is mounted on the main body 1, the outputs P0 and P1 are set to (P0, P1) = (L, H), and the duplex unit 3 is connected to the main body 1. When attached,
The outputs P0 and P1 are set to (P0, P1) = (H, L). If the two-sided units 2 and 3 are not used without being attached, the outputs P0 and P1 are set to (P0, P1) = (H, H).
Is set, and the mounting and type of the duplex units 2 and 3 are detected.
The CPU 15 controls the motor driver 16 according to the type of the duplex unit detected by the detection switch 17.

The operation of the recording apparatus constructed as described above will be described with reference to the flowchart of FIG.

The CPU 15 of the duplex unit control section 13 checks the outputs P0 and P1 of the detection switch 17 to confirm whether or not the duplex units 2 and 3 are mounted on the duplex unit mounting section 4 of the main body 1 (step S1). . Detection switch 1
7, when the outputs P0 and P1 are (L, H), it is determined that the duplex unit 2 is mounted.
When a recording paper reversal command is received from U14 (step S
2) Control the motor driver 16 to rotate the motor 10 forward, rotate the transport rollers 5, 6 and the reversing roller 7, and transport the recording paper that has been recorded on the front surface by the main body 1 and sent (step S3). After the leading edge of the recording paper is detected by the recording paper detection sensor 8 and the recording paper detection sensor 8 is turned on, the rear end of the recording paper passes through the recording paper detection sensor 8 and is turned on. After turning off (steps S4 and S5), when a predetermined time, for example, one second, elapses and the rear end of the recording sheet reaches the reversal point (step S6), the CPU 15 rotates the motor 10 in the reverse direction to convey the sheet. The rollers 5 and 6 and the reversing roller 7 are reversely rotated to reverse the recording paper (step S7). When the reversed recording paper passes the recording paper detection sensor 9 on the reversing path (steps S8 and S9), the rotation of the motor 10 is stopped (step S10).

The CPU 1 of the duplex unit control unit 13
5 detects that the double-sided unit 3 is mounted when it detects that the outputs P0 and P1 of the detection switch 17 are (H, L). When a recording paper reversal command is received from the CPU 14 of the main body control unit 12 (step S11), the motor 11 is rotated to rotate the transport rollers 5 and 6, and the main body 1 is rotated.
Is transported (step S12). The leading end of the recording paper is detected by the recording paper detection sensor 8, and
When the recording paper detection sensor 8 is turned on (step S1)
3), the CPU 15 rotates the motor 10 forward to rotate the reversing roller 7 (step S14). When the trailing edge of the recording paper passes through the recording paper detection sensor 8 and the recording paper detection sensor 8 is turned off (step S15), the rotation of the motor 11 is stopped and the next recording paper is sent (step S15). Step S
16). When the rear end of the recording paper reaches the reversal point after a lapse of a predetermined time, for example, one second (step S17), the CPU
Numeral 15 reverses the rotation of the motor 10 to reversely rotate the reversing roller 7, thereby reversing the recording paper (step S18). Here, when a next recording sheet reversal command is received from the CPU 14 of the main body control unit 12 (step S19), the motor 11 is rotated again (step S12). On the other hand, when the reversed recording paper passes the recording paper detection sensor 9 on the reversing path (Step S
20, S21), the rotation of the motor 10 is stopped (step S22).

The CPU 1 of the duplex unit control unit 13
When it is detected that the outputs P0 and P1 of the detection switch 17 are (H, H) at 5, it is determined that neither of the duplex units 2 and 3 is mounted on the main body 1, and the CPU 15 Is requested to stop communication (step S31). In this way, when neither of the two-sided units 2 and 3 is mounted on the main body 1, it is possible to spare time for unnecessary communication, and the performance of the CPU 14 of the main body control unit 12 is not reduced. I'm sorry.

In the above embodiment, the case where the mounting and type of the duplex units 2 and 3 are detected by the detection switch 17 has been described. As shown in the block diagram of FIG. A unique signal line 19 connected to input terminals 20 and 21 for detecting the presence / absence of a duplex unit of the CPU 15 of the control unit 13 may be provided to detect the attachment and type of the duplex units 2 and 3. For example, if the signal line 19a connected to the input terminal 20 of the double-sided unit 2 is grounded and the signal line 19b connected to the input terminal 21 of the double-sided unit 3 is grounded, when the double-sided unit 2 is mounted, the CPU 15 Signals (L, H) are sent from the signal line 19, and when the duplex unit 3 is mounted, the signal line 19 is sent to the CPU 15.
Sends a signal (H, L). When the duplex units 2 and 3 are not mounted, the signal line 1 is sent to the CPU 15.
9 sends a signal (H, H). By determining this signal, the CPU 15 can detect the attachment and type of the duplex units 2 and 3.

In each of the above embodiments, the CPU 14 of the main body control unit 12 and the CPU 1 of the duplex unit control unit 13
In the communication protocol with No. 5, “01H” when the duplex unit 2 is mounted, “02H” when the duplex unit 3 is mounted, and “02H” when both duplex units 2 and 3 are not mounted. If the communication code such as “00H” is determined in advance, the CPU of the
When the CPU 15 detects the attachment and type of the duplex units 2 and 3, the CPU 14 of the main body control unit 12 can automatically know the attachment and type of the duplex units 2 and 3.

[0019]

As described above, according to the present invention, a plurality of types of duplex units can be detachably attached to the main body, and the duplex unit control unit detects the mounting of the duplex unit and the type of the duplex unit, and detects the detected duplex unit. Since the control is performed according to the type of the double-sided unit, a double-sided unit of a different type can be appropriately selected and used.

When the duplex unit is not mounted on the main body, unnecessary communication can be prevented by disabling communication between the main body control unit and the duplex unit control unit.

Further, when communication between the main body control unit and the duplex unit control unit is performed by a predetermined communication code, the main body control unit automatically knows whether the duplex unit is not mounted and the type of the duplex unit. it can.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram showing a control unit of the embodiment.

FIG. 3 is a flowchart showing the operation of the embodiment.

FIG. 4 is a block diagram illustrating a control unit according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Double-sided unit 3 Double-sided unit 4 Double-sided unit mounting part 10 Motor 11 Motor 12 Main body control part 13 Double-sided unit control part 14 CPU 15 CPU 16 Motor driver 17 Detection switch 19 Signal line

Claims (4)

(57) [Claims] 1. A recording apparatus having a plurality of types of double-sided units, a double-sided unit control section, and a main body control section. It has one or more motors and reversing means, is detachable from the main body, and the duplex unit control section controls the operation of the duplex unit mounted on the main body by communication with the main body control section. , Control means, motor driver and detection means, the detection means detects the mounting of the duplex unit and the type of the duplex unit, and the control means controls the motor driver according to the type of the duplex unit detected by the detection unit. A recording device characterized by controlling. 2. The recording apparatus according to claim 1, wherein the mounting and the type of the double-sided unit are determined by a unique signal line provided in the double-sided unit. 3. The recording apparatus according to claim 1, wherein communication between the main body controller and the duplexer controller is disabled when the duplexer is not mounted on the main body. 4. The recording according to claim 1, wherein the communication between the main body control unit and the duplex unit control unit is performed by using a communication code predetermined according to the type of the duplex unit without mounting the duplex unit. apparatus.