BJC-7100

Part 4: Technical Reference

IO ports

The BJ cartridge rank signals, etc., are input to the IO ports. The power indicator and error indicator lighting control signals, etc., are output from the output ports.

3) Control ROM (IC3)

The 8Mbit control ROM contains the printer control program.

4) DRAMs (IC5 and IC6)

The 8Mbit DRAMs (4Mbit ×2), which are controlled by the printer controller, are used as the receive buffer, download buffer, print buffer, and working area.

5) Reset IC (IC8)

The reset IC senses the supply voltage when the power is turned on or when it is interrupted, and resets the MPU and printer controller.

6) EEPROM (IC7)

The 2Kbit EEPROM, which is controlled by the printer controller, stores the various printer settings, total waste ink amount, page count, print head removal/ installation count, and resume count, etc.

7) Paper feed motor driver (IC14)

The paper feed motor driver, which is controlled by the MPU, performs constant current bipolar drive of the paper feed motor, which is controlled using 2-phase excitation. There are two drive circuits in the IC.

8) Carriage motor driver (IC13)

The carriage motor driver, which is controlled by the MPU, performs constant current bipolar drive of the carriage motor, which is controlled using double 1-2- phase excitation.

The carriage motor switches the peak current among 5 steps according to the switching signals from the MPU to maintain optimum carriage motor drive. There is one drive circuit in the IC.

Mechanical

System

Electrical System

AC Adaptor

Feed Roller

Sheet Feeder

Pickup Roller

Sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Carriage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Black

 

 

Color/Photo

 

 

Purge Unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BJ Cartridge

 

 

BJ Cartridge

 

 

Purge Sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Home Position

 

 

 

Ink-out

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Detection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Printer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Temperature

 

 

 

 

 

 

 

 

 

 

 

Paper Feed

 

 

 

Carriage

 

 

 

Sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Motor

 

 

 

Motor

 

 

 

 

JENG1

 

 

JENG2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Paper End

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sensor

 

 

CNPGS

 

 

 

CNLF

 

 

 

CNCR

 

 

CNHEAD1

 

 

 

CNHEAD2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DC Inlet

 

 

VCC

 

 

 

 

 

 

 

 

 

Mechanism

 

 

 

 

 

 

 

 

(+5VDC)

 

 

 

 

 

 

 

Control

 

 

 

 

Carriage

 

CNPWR

 

Logic Board

 

 

 

 

 

 

 

 

VH

(+20VDC)

 

 

 

 

 

 

 

 

 

 

Control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(+27.6VDC)

 

Interface

 

Indicator

 

 

Switch

 

 

 

 

 

 

 

Control

 

Control

 

 

Detection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AC Plug

CNIF

Indicators

Control Buttons

Figure 4-31 Printer Block Diagram

4-43

Page 123
Image 123
Canon QY8-1360-000 manual Control ROM IC3, DRAMs IC5 and IC6, Reset IC IC8, Paper feed motor driver IC14

QY8-1360-000 specifications

The Canon QY8-1360-000 is a highly regarded print head designed specifically for Canon’s line of professional printers, particularly those used in high-quality photo printing and graphic arts. This component is essential for achieving the vibrant colors and sharp details that are hallmark features of Canon’s imaging technology.

One of the main features of the QY8-1360-000 is its precision engineering, which allows for a high level of accuracy in ink application. This print head utilizes a micro-nozzle technology that enhances the distribution of ink onto the paper, minimizing the potential for blurriness or color bleeding. The micro-nozzles work in conjunction with a sophisticated ink delivery system, ensuring that colors are produced as intended by the original digital file.

Another key characteristic of the QY8-1360-000 is its ability to support a wide range of media types, ensuring flexibility for various printing projects. Whether it’s glossy photo paper, fine art paper, or even canvas, this print head can accommodate different textures and finishes, making it ideal for both professional photographers and graphic designers.

Additionally, this print head is designed to achieve high resolution printing, with capabilities that can reach up to 4800 x 1200 dpi. Such high resolution allows for exceptional detail and color accuracy, which is particularly critical when producing photographic prints. The print head can also handle a broad color gamut, facilitating rich and vivid color outputs that elevate the overall quality of printed materials.

Technologically, the QY8-1360-000 incorporates Canon’s FINE (Full-Photolithography Inkjet Nozzle Engineering) technology. This innovative technology allows for the quick heat-up and ejection of ink, ensuring rapid print speeds without compromising quality. By combining speed with precision, it significantly enhances productivity in a professional setting.

In summary, the Canon QY8-1360-000 print head is an essential component for anyone seeking exceptional print quality and versatility in their printing endeavors. With precision engineering, support for multiple media types, high resolution output, and advanced FINE technology, it represents a significant advancement in Canon’s commitment to delivering outstanding imaging solutions. Whether used in a studio, print shop, or home office, the QY8-1360-000 enhances the quality and efficiency of printing workflows, making it a vital tool for creative professionals.