EPSON Stylus PHOTO 810/820/830

Revision B

2.1 Overview

†No porous pad in cap

†Cap unit with wiper

This section describes the operating principles of the Printer mechanism and electrical circuit boards. Like the previous printers (Stylus COLOR 480/580), the Stylus PHOTO 810/820 has only the following two circuit boards and does not have the control panel board.*1

† Main board

(Stylus Photo 810/820)

: C417/C418 Main/Main-B board *2

† Main board

(Stylus Photo 820/830)

: C483/484 Main-B board

† Power supply board

(Stylus Photo 810/820)

: C417

PSB/PSE board

† Power supply board

(Stylus Photo 820/830)

: C482

PSH (For 42V)

*1 : Due to this, the Stylus COLOR 480/580 does not have switches (Power, Error reset, Ink cartridge replacement) and LEDs. However, the Stylus PHOTO 810/820 has them on the C418 Main board instead of the control panel board.

*2 : C418 Main/Main-B board is used for the Stylus C60 and Stylus Photo 810/820. However, there is difference of ASIC & PROM mounted on the C418 Main/ Main-B board between the Stylus C60 and the Stylus Photo 810/820.

2.1.1 Printer Mechanism

The Printer mechanism for the Stylus PHOTO 810/820 is newly designed. But, the basic component of the Printer mechanism is almost the same as the previous printer (Stylus COLOR 480/580). And also, Stylus Photo 820/830 is successor to Stylus Photo 810/820 and is the same as its printer mechanism.

This printer consists of Printhead, Carriage mechanism, Paper loading mechanism, Paper feeding mechanism, Ink system (Pump mechanism including newly designed Carriage lock mechanism, Capping mechanism including newly designed Wiper mechanism).

Like the previous printers (Stylus COLOR 480/580), the Stylus PHOTO 810/820 is equipped with two stepping motors; one for the Paper loading/feeding mechanism and the Pump mechanism with the CR lock mechanism, and one for the CR mechanism. The ASF unit for the Paper loading mechanism uses rear entry front eject system. And, single LD roller in Holder shaft unit loads a paper to the Printer mechanism.

The Cap unit which adopts the valveless mechanism is newly designed on this printer

Star wheel roller

CR unit

Change lever

Cap unit

Paper eject roller

PF motor

PF roller

CR timing belt

HP/PE Sensor

LD Roller

Pad holder

(Paper return plate)

LD pad

Compression spring

Clutch mechanism

Pump unit

CR motor

as follows.

Figure 2-1. Printer mechanism block diagram
Operating Principles

Overview

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