Part 4: Technical Reference

BJC-7100

2.FIRMWARE

2.1Interface

The printer is equipped with an IEEE1284-compatible bidirectional parallel interface. This interface supports compatible mode, nibble mode, and ECP mode.

Compatible Mode

Selectin=High

Autofd=Low

Compatible Mode:

In compatible mode, signals are sent in one direction only, from the host PC to the printer, as with the standard Centronics interface. This is the default mode when the printer is turned on.

Negotiation:

Negotiation is the procedure by which the printer interface adjusts to bidirectional mode.

Negotiation

1000 0000 *

Extensibility Link

Extensibility

 

request analysis

 

 

 

0001 0000 *

 

 

0000

0000 *

 

* Value of extensibility

Nibble Mode

ECP Mode

request

Rejection

Selectin=Low Extensibility Link:

This is a part of the negotiation phase, entered when the value

Terminationof the received extensibility request is (1000 0000). The bidirectional mode and device ID, etc., are exchanged in this phase.

Termination:

The interface returns from nibble mode or ECP mode to compatible mode in this phase.

Figure 4-5 Bidirectional Centronics Specifications Selection Sequence

2.1.1 Compatible mode

In compatible mode, the parallel interface sends data in 8-bit units.

Data is sent using handshaking based on the DATA STROBE, BUSY, and ACKNLG signals.

When data (Data 1 to 8) and the DATA STROBE signal are input from the host PC, the printer controller, which controls the parallel interface, outputs a BUSY signal and latches the data signals as DATA STROBE falls. After the BUSY signal has been output, the printer controller fetches the latched data via the DRAM bus to the receive buffer in the DRAM. After writing the data to the receive buffer in the DRAM, the printer controller outputs an ACKNLG signal, sets the BUSY signal "Low", and waits to receive the next data from the host PC.

The BJC-7100 can reduce the response time by the operation in the printer driver. This achieves faster printing, however, this may not work with some host computers.

0.5μs 0.5μs 0.5μs Min. Min. Min.

Data 1-8

STROBE

Min.0.8μs

BUSY

ACKNLG

4ms (When HS mode is invalid)

Figure 4-6 Interface Timing (Compatible Mode)

4-6

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Image 86
Canon QY8-1360-000 manual Firmware, Interface, Compatible mode

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.