Part 4: Technical Reference

BJC-7100

5.2 Miscellaneous Detection Functions

In addition to sensor-based detection functions, the BJC-7100 printer also has the following detection functions.

5.2.1 Waste-ink amount detection

This function processes the amount of waste ink (and ink optimizer) in the waste ink absorbers.

The printer stores the total waste ink amount absorbed by the waste ink absorbers from cleaning and maintenance jet operations in the EEPROM on the logic board. Post-absorption evaporation is taken into account when calculating the amount. The total waste ink amount is updated when the power is turned off, on completion of cleaning operations, and when a page is output. When the waste ink amount approaches the absorber's capacity, the printer stops printing.

When the waste ink amount (or ink optimizer amount) reaches 95% of the waste ink absorber capacity, the printer generates a waste ink alarm (operator call). You can press the RESUME button to continue operating the printer. When the waste ink amount (or ink optimizer amount) subsequently reaches 100% absorber capacity, the printer outputs a waste-ink full error (service call) to prevent ink leaks.

5.2.2 BJ cartridge detection

The detection signals from the index unit in the print head heater board are used to detect the presence and type of BJ cartridge.

For details, see Part 4, section 3.2.6, "BJ cartridge detection" (page 4-28).

5.2.3 Ink-out detection

1) Detection operation

An ink-out detection pulse is output to the ink paths in the ink room in the head holder. The pulse is transmitted via the ink path to the ink sponges and received by the electrode on the carriage. It is then amplified by the carriage board and read by the AD board of the MPU, and converted from analog to digital to detect the existence of ink.

The electrode is located opposite the ink room in the head holder.

2) Timing processing

Ink-out detection is performed for all inks in a single sweep in the following order: ink optimizer, black ink, color ink, and photo ink.

In the case of the color and photo inks, detection proceeds from yellow through magenta to cyan. Post ink-out detection processing differs according to the timing.

TABLE 4-9 INK-OUT DETECTION TIMING

Detection timing

Post ink-out detection processing

• When power turned on using

Cleaning *

POWER button

 

• After page is output

Cleaning *

• After all cleaning operations

Transition to ink-out error (operator call)

•When head overheat is detected See Part 4, section 2.5, "Head Overheat Protection" (page 4-12) for details.

*: The cleaning operation differs according to which ink has run out. See Part 4, section 3.3.1, "Function of purge unit" (page 4-29)for details.

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Canon QY8-1360-000 manual Miscellaneous Detection Functions, Waste-ink amount detection, Ink-out detection
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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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