HiTi Digital Photo Printer 640PS Manuale utente

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64xPS/ID

Service Guide

Version: 1.1

The Service Guide was written mainly for engineers.

Please Do Not reproduce and duplicate.

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Chapter 1:

Overview

Chapter 2:

Theory of Operation, Mechanism, Firmware

Chapter 3:

Disassembly, Index of Parts, Tools required

Chapter 4:

Adjustments

Chapter 5:

Contact Information

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Chapter 1: Overview

Overvie w

HiTi Photo Printer 640PS and 641PS are popular printers able to print in high-speed &

high-quality. HiTi photo printers are stylish and compact. HiTi printers canprint 6x4”

(10x15cm) photos, ID photos (various sizes), name cards, post cards, greeting cards,

season cards, calendars, and stickers.

There are 2 different ways to operate the HiTi PhotoPrinter 640PS and 641PS:

1. The printer can be connected to a personalcomputer via a USB cable. HiTi photo

printers meet the USB 1.1 standard and are fully compatible with any USB device (USB

1.0 to 2.0).

2. The HiTi Photo Printer 640PS and 641PS can also be operated without a direct or

indirect connection to a personal computer. This printing style is called standalone

printing. In this mode, images are being selected with the handheld TFT monitor. The

640PS and the 641PS both feature ‘onboard’ multi-card readers. A memory card can be

inserted into the card slot. Image can be selected on the handheld TFT monitor.

In addition to amulti card memory card slot, the 641PS also features a LinkPrint

connector. LinkPrint is an advancement of the Picture Bridge standard, which allows

compliant cameras to be directly connected to the 641PS printer. LinkPrint also allows

external hard drives or storage drives, such as USB memory sticks, to be directly

connected to the printer.

The 640PS and 641PS include one of the following functions:

PrintingProcess

640PS

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 YMCO 4 passes (Yellow, Magenta, Cyan, and Over-coating)

 Over coating ensures that HiTi’s printouts can be kept a longer time than inkjet

printer’s printouts.

High Quality Resolution

 640PSand 641PS: 403x403 dpi

Convenience

 All HiTi Photo Printer ship with “Photo Desiree”, a photo editingprogram

designed for printing4”x6” photos, id photos, calendars, photo name cards, and

photo greeting cards.

 HiTi “PhotoDesiree” enhances and enables very easy usage for your photo

printer. It allows youto turnyour 640PS or 641PSinto a digital mini lab you

can operate from home.

 You can download the latest firmware and other softwarefrom the HiTi website

to your computer. Firmware is being updated per USB cable.

 Multi-memory card support. HiTi Photo Printer 640PS and 641PSprovide two

types of memory card slots.

 Stand-alone operation & PC link: You can instantly preview what you want to

print.

 640PSand 641PS can be used to read your images from a memory card (it has

the functions of a card reader).

(641PS only:)

 641PS can accept any USB device (Camera, USB memory stick, USB memory

card adaptors, External HDD). Thistechnology is known as LinkPrint.

Specifications

Model Name HiTi Photo Printer 640PS& 641PS

Printing Method Dye Diffusion Thermal Transfer continuous tone

printing

Gradations 256 levels per Yellow, Magenta, Cyan color (8 bits),

total16.77 million true colors

Resolution 403×403 dpi

Paper Size 4 in.×7 in. with detachableboundary

Printing Size 4 in.×6 in., (100mm×152mm)

Paper Feed Cassette type automatic feeder, 25 sheet capacity

Printing S peed Approx. 60 sec. per sheet (excluding data transmission

time)

Operating Temperature 59˚ ~90˚F (15˚ ~32˚C)

Operating Humidity 20 ~75% RH

Computer Interface USB Ver. 1.1

Card S ocket Twin slot support CF, SM, SD, MMC, MS and Micro

Drive

File Format Support EXIF, JPEG, DPOF

Power Supply 100~240V, 50/ 60 Hz

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Operating System Windows 98/ M E/2000/ XP

Linux & Mac OS 10.2 and above

Minimum S ystem

Requirement

Win 98/ME: 64M B RAM , Pentium PC

Win 2000/ XP: 128MB RAM, Pentium PC

Certification UL, TUV-GS, FCC, CE, BSMI, CCC, C-Tick, VCCI

Accessories Included

Paper Cassette, USB cable, CD-ROM (with printer

drivers, bundle software and electronic manual), AC

power cord, Sample print kit (8 sheets ofphoto paper,

1 sheet of 4×4 sticker, 1 sheet of 4/2/4 sticker plus 1

YMCO ribbon cartridge for 10 prints

Chapter 2: Theory of Operation

Dye Diffusion Thermal Transfer (D2T2)

Dye Diffusion Thermal Transfer (D2T2), the world’s leading technology in photo

printingprocesses, uses a thermal printing head (TPH) to sequentially heat three ribbon

panels that are coated with yellow, magenta and cyan dye. The heat process turns the dye

into gas that diffuses into a thin receiving layer on top of the paper. An overcoat is then

layered down on top of the paper to protect the color against water and ultraviolet rays

and to prevent it from fading.

Compared with some other photo-capable printing technologies, such as Thermal

Autochrome (Fujifilm), Variable Dot (Fujicopian) and Inkjet (Canon, Epson and HP),

Dye Diffusion Thermal Transfer creates the most realistic photo quality. To the naked

eye it is indistinguishable from photographic prints. Its continuous-tone printing produces

256 color gradation levels in each pixel independently whileother technologies, like

VariableDot and Inkjet, have to make different dot sizes to increase the resolution in

half-tone to achieve similar effects.

The Thermal Print Head (TPH)

sequentially heats three ribbon panels

that arecoated with dye in yellow,

magenta and cyan. The heat process

turns the dye into gas that diffuses into

a thin receivinglayer on top ofthe

paper. An overcoat is then layered

down on top ofthe paper to protect the

color against water and ultraviolet and

to prevent it from fading.

TPH

Paper

Ribbon

He at

Dye

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Hardware

Thermal Print Head (TPH)

Thermal Print Head (TPH) is the key component for D2T2 printer, like the inkjet printing

head for inkjet printer.

Heating Ele ment

Driver IC

PCB

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Main Board & ASIC

Note: Main Board = Mother board; ASIC = HiTi CPU

The ASIC is an IC (Integrated Chip) located on the Main Board. The ASIC was designed

by the HiTi R&D department and features an 8032 MCU. The ASIC drives the USB

controller, controls the embedded SDRAM , MCU I/F, USB I/F, memory I/F, and GIO

interface.

The Firmware (located on IC-A and IC-B) controls the actions of the printer by reading

and writing the registers. Please note IC-B is a back up to IC-A.

The VR (Variable Resistance) on the main board is used to adjust the voltage of the

ribbon sensor. (M ore details located in the VR adjustment section).

The 640PS and 641PS have 2 ICs located on the mainboard. The FW (firmware) is

stored in IC-Aand IC-B.

The picture below illustrates the mainboard of the 640PS.

On the 641PS main board IC-B is soldered onto the main board.

ASIC

IC - A

IC - B

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Power Board

It contains a universalAC input, DC +18V/7V output and a USB interface.

The VR (variable resistance) on the power board is used to adjust the voltage of the THP.

This controls the color density of the printout.

The illustration below shows the image of a 640PS power board.

Note: If the color density is too light, a voltage adjustment (VR on the power board) can adjust the

lightness. More explanation will be given later.

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TPH Board

The TPH Board connects the cables (Ribbon LED cable, TPH Cable, Cassette Sensor

Cable, Fan Cable). The TPH board connects then to the motherboard.

TPH Board

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Card Board (640PS and 641PS)

640PS :There are 2 memory card sockets on the card board. One is for Compact Flash

and the other is for Smart M edia/ M ulti-M edia-Card/ Secure Digital Card/Memory Stick.

641PS :The 641 PS card board features an enhanced USB Connector. This USB

Connector connects Picture Bridge compatible cameras, external hard-drives and storage

cards such as USB memory sticks to the printer. As it is more advanced then Picture

Bridge it is called Link Print.

The illustration below shows the 640PS card board

Compact

Flash

socket

4 in 1 memory card

socket

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