BJC-7100

Part 4: Technical Reference

1.3 Print Signal Sequence

The following describes the sequence of signals from the time the host PC sends the print signals to the printer up to the point at which printing is performed.

a)The host PC sends print signals to the printer.

The print signals consist of print data and control commands.

b)The printer controller receives the print signals and temporarily stores them in the DRAM receive buffer.

c)The MPU fetches the print signals from the receive buffer and separates the print data from the control commands based on the program in the control ROM.

The MPU processes the control commands based on the program in the control ROM.

d)The MPU expands the print data in the DRAM print buffer.

e)The printer controller receives the request to start printing from the MPU and the print data is sent from the DRAM by DMA to the printer controller.

f)The printer controller converts the print data into serial data for the respective BJ heads and outputs this data to the BJ heads with control signals.

The drive circuits in the BJ heads convert the serial data to parallel format and control the output of inks onto the print paper as indicated by the control signals.

g)The MPU and printer controller sense the status of the BJ heads and printer and control the printer as a whole, including the motor drivers, etc.

 

a

 

 

b

DRAM

 

 

 

 

Host PC

 

 

 

 

 

 

 

 

Receive

 

 

 

 

c

 

 

 

 

Buffer

 

 

Printer

 

 

 

 

Controller

 

 

 

f

 

 

d

 

 

 

 

 

Print Buffer

 

 

 

 

 

 

 

 

 

e

 

Drive

c

d

g

e

 

 

 

 

 

 

Circuits

g

 

 

c

Control ROM

 

 

 

BJ Head

 

 

 

g

 

• Black Head

 

 

 

Motor Driver

• Ink Optimizer Head

 

MPU

 

• Color Head

 

 

 

 

 

 

 

 

• Photo Head

 

 

 

 

 

: Print Data

 

 

 

g

Sensors

 

 

 

 

: Control

 

 

 

 

 

Commands and

 

 

 

Logic Board

Signals

 

 

 

 

 

 

 

 

 

Figure 4-3 Print Signal Sequence

The BJC-7100 supports the Canon extended (native) mode, but not emulation. The print signals sent from the host PC are therefore Canon extended mode signals converted by the printer driver.

4-3

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Canon QY8-1360-000 manual Print Signal Sequence, Receive, Controller Print Buffer, Motor Driver, Sensors
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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.
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