Overview; Printer Mechanism - Epson Stylus C58 Service Manual

Epson Stylus C58/C59/ME 2/C79/D78/C90/C91/C92/D92/T20/T20E/T23/T26/S20/T10/T11/ME 30/T21/T24/T27/S21

2.1 Overview

This section describes the operating principles of the printer mechanism and electrical
circuit boards. The printer mechanism does not differ between the Epson Stylus C58/
C59/ME2 and Epson Stylus C79/D78/C90/C91/C92/D92/T20/T20E/T23/T26/S20/
T10/T11/Me 30/T21/T24/T27/S21.

2.2 Printer Mechanism

Printer mechanism of Epson Stylus C58/C59/ME 2 and Epson Stylus C79/D78/C90/
C91/C92/D92/T20/T20E/T23/T26/S20/T10/T11/ME 30/T21/T24/T27/S21 consists of
printhead, carriage mechanism, paper loading/feeding mechanism, and ink system.
As in the case of conventional models, Epson Stylus C58/C59/ME 2 and Epson Stylus
C79/D78/C90/C91/C92/D92/T20/T20E/T23/T26/S20/T10/T11/ME 30/T21/T24/T27/
S21 has two motors; one is a stepping motor for paper loading/feeding mechanism, and
the other is a DC motor for carriage mechanism.
Papers are fed from the backside and ejected from the front side of the printer.
Paper feeding mechanism feeds papers using the LD roller and the retard roller.
OPERATING PRINCIPLES
PF motor
Star wheel
rollers
Carriage unit
Paper eject
roller
CR lock lever
Cap unit
Figure 2-1. Printer Mechanism Outline
Overview
Revision E
PF roller
CR timing belt
CR encoder
sensor
Retard roller
Compression
spring
LD roller
PE sensor
Cam, large
Cam, small
Clutch
Pump unit
CR motor
22
Confidential