BJC-7100

Part 4: Technical Reference

4.2.2 Logic components

1) MPU (IC1)

The MPU accommodates a 32-bit CPU, 25-bit address bus, 2KB work RAM, and nine peripheral IO ports (interrupt controller, DMAC, timers, IO ports, AD converter, DRAM controller, chip select controller, monitor timer, clock & power manager).

Internal CPU

The 32-bit CPU has 16 32-bit general-purpose registers and operates in sync with a 20MHz external clock input.

Address bus

The 25-bit address bus port is connected to the printer controller.

Data bus

The 16-bit data bus port for external devices is connected to the 8Mbit control ROM and printer controller.

Internal RAM

The MPU has 2KB of internal RAM with 32-bit access.

Interrupt controller

The MPU has 21 interrupt request factors and 5 external interrupt factors, each triggering interrupt processing.

Direct memory access (DMA) controller

The MPU has a 4-channel DMA controller that supports a 64MB address space.

Timer (stepping motor controller/sense signal controller)/monitor timer

The timer has two realtime port timer channels and seven multifunction timer channels, which are connected to the respective sensors and motor drivers.

The stepping motor controller outputs double 1-2 phase excitation drive signals for the carriage motor and 2-phase excitation drive signals for the paper feed motor. The monitor timer monitors the signals at the realtime port timer terminals.

IO ports

The IO ports input receive data, output send data, input and output send requests, input and output transmission clock requests, and input and output the transmission clock.

AD converter

The following analog signals are detected via the internal AD converter.

AN0: Ink optimizer head temperature detection from the head temperature sensor in the BJ cartridge.

AN1: Black head temperature detection from the head temperature sensor in the BJ cartridge.

AN2: Photo head temperature detection from the head temperature sensor in the BJ cartridge.

AN3: Color head temperature detection from the head temperature sensor in the BJ cartridge.

AN4: VH voltage detection from the AC adaptor via the printer controller.

AN5: Head rank detection from the rank resistor in the BJ cartridge via the printer controller.

AN6: Ink-out detection from the antenna on the carriage.

AN7: Printer temperature detection from the thermistor on the control board.

4-41

Page 121
Image 121
Canon QY8-1360-000 manual Logic components

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.