Epson Printer R230 Roller Spring

Roll paper

Board Paper

PE sensor

Paper eject support roller star wheel roller

CD-R tray

Sensor R230

Paper eject roller B Paper eject roller A PF roller

Figure 2-5. Paper Feeding Mechanism

Board Paper

Paper eject roller B Paper eject roller A PF roller

Figure 2-5. Paper Feeding Mechanism

Figure 2-4. Pseudo Four-color Mode

2.2.3.1 ASF Paper Feeding Mechanism

Table 2-9. ASF/Pump Motor Specifications

Item

Specifications

Type

4-phase, 48-pole PM type stepping motor

Drive method

Bipolar drive/constant-current drive

Drive voltage

+42V +/- 5% (voltage applied to driver)

Winding resistance

7.0Q +/- 10% (per phase at 25°C)

Inductance

10.0mH +/- 20% (1kH 1Vrms)

The following table indicates the rotation directions for driving the ASF unit/pump mechanism.

Table 2-10. ASF/Pump Motor Rotation Directions

Rotation Direction

D/E

ASF Paper Feed Roller Operation

Pump Operation

CW *a

Pump switching direction

Paper return lever setting

Pump suction/wiper setting

CCW *b

ASF switching direction

Paper feed

Pump releasing Wiper resetting

*a: CW (CW is defined as the clockwise direction as viewed from the ASF/

Pump motor pinion) *b: CCW (CCW is defined as the counterclockwise direction as viewed from the ASF/Pump motor pinion)

The driving force of the ASF/Pump motor is transmitted to the ASF unit by the Carriage unit operation and DE mechanism switching operation described in the following section.

2.2.3.2 Drive Transmission Path to ASF Unit

1. The Carriage unit moves to the right end of the Carriage guide shaft to move the DE lock lever to the right end.

2. The ASF/Pump motor rotates in the CCW direction (as viewed from the motor pinion gear side) by the specified number of steps.

3. As the ASF/Pump motor rotates in the CCW direction, the Planetary lever unit in the DE mechanism moves toward the combination gear 12, 22.4.

4. As the Carriage unit moves leftward from the right end of the Carriage guide shaft by the specified number of steps, the DE lock lever fixes the Planetary lever unit.

5. The driving force of the ASF/Pump motor is transmitted in the following path. Motor pinion gear ^ Planetary lever unit ^ Combination gear 12, 22.4 ^ Combination gear 14, 28 ^ Spur gear 32 (ASF side)

The following shows the part names and operation outline of the DE mechanism.

Combination gear 14, 28

Combination gear 12, 22.4

Combination gear 14, 28

Combination gear 12, 22.4

Pinion Gear Unit

Planetary lever unit

DE lock lever

ASF/Pump motor pinion gear Combination gear 17.19, 25.6

Figure 2-6. DE Mechanism

Planetary lever unit

DE lock lever

ASF/Pump motor pinion gear Combination gear 17.19, 25.6

Figure 2-6. DE Mechanism

2.2.3.3 ASF Paper Feeding Operation

Using the driving force transmitted from the ASF/Pump motor via the DE mechanism, the ASF unit performs the following paper feeding operation. To achieve stable paper feeding operation of the paper feeding mechanism of this product, the double-feed prevention mechanism is installed in the ASF. To prevent paper from dropping into the paper path from the paper setting position in the ASF unit, the Paper return lever returns the paper to within the ASF hopper securely, and the LD roller then starts paper feeding operation. Refer to the following steps for details of the paper feeding operation including that of the double-feed prevention mechanism.

1. At power-on, the ASF/Pump motor rotates in the CCW direction and the ASF home position is detected. Then, the ASF/Pump motor rotates in the CW direction by the specified number of steps, thereby setting the LD roller and Paper return lever in the paper feeding standby position. Refer to [Standby status] in Figure 2-7, "Paper Feeding Operation".

2. When you give a paper feeding command from the PC and press the Paper switch on the panel, the ASF/Pump motor rotates in the CCW direction and the LD roller starts paper feeding. Refer to [Paper feeding status] in Figure 2-7, "Paper Feeding Operation".

3. When the paper is transferred from the ASF unit to the PF roller and detected by the PE sensor, the LD roller stops in the position where the friction of the LD roller is cleared. Refer to [PF roller passing status] in Figure 2-7, "Paper Feeding Operation".

4. Then when you give a print command and press the Paper switch on the panel, the ASF/Pump motor rotates in the CW direction by the specified number of steps, thereby setting the LD roller and Paper return lever in the paper feeding standby position. Refer to [Standby status] in Figure 2-7, "Paper Feeding Operation".

LD roller

Paper feed roller(Cam)

Hopper spring 2

Pinch roller

Pinch roller

Epson R290 Asf Unit

Pad spring ever

[Standby status] [Paper feeding status] [PF roller passing status] Figure 2-7. Paper Feeding Operation

2.2.3.4 Manual Paper Feeding Mechanism (Board Paper)

To enable direct printing onto thick paper and CD-R label, this product has the mechanism to feed paper from the printer front and rear manually. Move the Release lever to the farthest position, insert thick paper from the rear manual feed slot until its leading edge reaches a position about 1cm from the PF/Driven roller, and set the Release lever in the thick paper mode.

When the PE sensor detects the paper after the above Release lever has been operated, pressing the Paper feed switch causes the PW sensor to detect the leading edge of the paper and the printer to perform paper locating control and enter the standby status.

2.2.3.5 Roll Paper Feeding

Since panel operation in the roll paper mode differs from the above operation, the differences of panel operation after roll paper feeding will be described.

1. When roll paper is fed with the Release lever not in the release position, the PE sensor detects the paper, and after 2 seconds has elapsed, the paper is fed.

2. The PW sensor check for the leading edge of the paper, and if it detects the paper, the printer operates in the cutter self-cleaning mode.

3. The printer back-feeds the paper to the paper print starting position.

As explained above, when roll paper is inserted from the Roll paper feeding guide to the paper feeding position of the PE sensor, paper is automatically fed and back-fed to the print starting position. At this time, panel switch operation is invalid (since 02<H> is written to 3F<H> in the EEPROM), and the definitions of the panel operation and Paper feed switch differ between cut sheets and roll paper.

When roll paper is fed, 02<H> is written to the EEPROM 3F<H> area, but when roll paper print data is received from the PC, 01<H> is written to the 3F<H> area. Panel switch operation differs as described below between when 02<H> is written to the 3F<H> area and when 01<H> is written there.

Pressing the Roll paper cut switch for more than 3 seconds back-feeds the leading edge of the roll paper to the PE sensor (the Paper LED blinks). When the roll paper is removed from under the PE sensor in this state, paper is fed from the ASF.

□ When 01<H> is written and cutter is fitted

When the data from the photo quicker is "No auto cut", pressing the Roll paper cut switch after end of printing feeds the separation position in the print data to the roll paper cut position and returns the leading edge of the paper to the print starting position after paper cutting.

When the data from the photo quicker is "Standard 1 cut" or "Specific 2 cuts", the roll paper is cut automatically at every separation of the print data, and the leading edge of the paper is then returned to the print starting position.

□ When 01<H> is written and cutter is not fitted

Pressing the Roll paper cut switch after end of printing prints a tear-off line and feeds the roll paper to the roll paper cut position. When you cut the roll paper with scissors or like and then press the Roll paper switch again, the paper returns to the print starting position.

The auto cut setting section of the print option in the photo quicker is displayed according to the Auto cutter fitting radio button setting in the printer information within the driver.

2.2.3.6 CD-R Printing Mechanism (Only for Stylus PHOTO 2100)

□ CD-R tray home position detection sequence

When the CD-R attachment is fitted, the Release lever setting position (PG sensor: Close, Release sensor: Open) and CD-R tray sensor (Close) are detected. By pushing the CD-R tray into the specified position and pressing the Paper feed switch in this status, the following operation is performed.

1. The Carriage unit moves to the CD-R tray home position detection position (white label position).

2. The CD-R tray is pulled in the ASF direction.

3. When the PW sensor of the Carriage unit detects the CD-R home position, the Carriage unit moves to the CD-R tray center position (horizontal center of the CD).

4. The CD-R tray is fed in the paper ejection direction and the trailing edge of the CD-R is detected. Then, the CD-R tray is fed in the ASF direction again and the leading edge of the CD-R is detected. After that, the CD-R tray is fed to the CD-R tray center position in the paper ejection direction.

5. In the position in Step 4, the Carriage unit moves rightward and the detection of the CD-R horizontal direction starts. After the left end of the CD-R is detected, the Carriage unit moves rightward again and the CD-R horizontal direction is detected.

6. The Carriage unit stops at the CD-R tray home position detection position (paper feeding direction) and the CD-R tray is fed in the paper ejection direction. When the home position is detected, both the Carriage unit and CD-R tray stop operating and are put in a standby status.

If the CD-R tray home position or CD-R cannot be detected in the specified step operation of each step in the above sequence, the CD-R tray is ejected and Paper out error is displayed. If the Release lever setting position (PG sensor: Close, Release sensor: Open) and CD-R tray sensor (Close) are detected when the CD-R attachment is fitted, pressing the Paper feed switch will not start paper feed from the ASF. In this case, pressing the Paper feed switch performs the CD-R tray home position detection sequence.

When the CD-R tray is detected, Release lever error is displayed if the Release lever setting position is other than the CD-R position.

Epson Sensor Measurement
Figure 2-8. CD-R Mechanism

echanism

Was this article helpful?

0 0

Responses

  • Smeralda Cremonesi
    How to remove cd tray sensor from r230?
    6 years ago

Post a comment