Part 4: Technical Reference

BJC-7100

1.4 BJ Cartridge Drive

The BJ cartridges are driven according to the print data and control signals output by the logic board. The control signals determine the timing with which ink is ejected from the nozzles in the BJ heads and the amount of ink. These are optimized by the printer controller according to the conditions shown bellow. The control signals also stabilize the amount of ink by keeping the BJ heads at the optimum temperature.

The drive frequency is changed to 14.4kHz, 10.56kHz or 9.6kHz by print modes.

BJ head temperature (heater board) and printer temperature

Fluctuations in the heater characteristics of the BJ heads (head rank)

Print mode and media being printed on

1.4.1 Print drive control

In the BJC-7100, printing is achieved by block dispersal drive, in which the three vertical rows of nozzles fire sequentially and driven alternately odd/even to minimize the concurrent firing of neighbouring nozzles.

The heat enable signal consists of a pre-pulse and main pulse. To keep the ink jetting in the optimum state, the pulse width is varied according to the internal state of the printer, such as the head rank, printer temperature, and head temperature.

The BJC-7100 uses a range of inks and, when printing on plain paper or envelopes in other than draft mode, an ink optimizer for plain paper. The ink optimizer is an almost colorless, transparent fluid.

For simplicity in this manual, we refer to the ink optimizer for plain paper simply as ink optimizer or just optimizer. We also refer to the various colored inks and the ink optimizer for plain paper simply as "inks".

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Canon QY8-1360-000 manual BJ Cartridge Drive, Print drive control

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.