HP T610, T1100 User Manual

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HP Designjet T1100and T610-series Printers:

Productivity

Productivity and Image Quality..............................................................................................................

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In-printer Processing Architecture ...........................................................................................................

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Image Processing Pipeline: T610-series ..................................................................................................

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Image Processing Pipeline: T1100-series ................................................................................................

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Scalable Printing Technology and HP 72 Printheads ................................................................................

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For more information............................................................................................................................

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HP T610, T1100 User Manual

HP Designjet T1100and T610-series printers provide outstanding productivity and image quality with powerful in-printer, hardware-based image processing that minimizes workstation computational load and network traffic to deliver dependable printing results.

Productivity and Image Quality

On plain paper, HP Designjet T1100and T610-series printers can produce a single A1/D-size color line drawing in 35 seconds (Economode) and up to 52 prints per hour.1

HP Designjet T1100and T610-series printers deliver significantly higher image quality and at higher productivity compared to the HP Designjet 800and 1000-series. This is clearly seen in the Productivity-Image Quality charts2 in Figure 1, where faster mechanical printing times are shown from left to right.

Figure 1. Relative Image Quality and Print Time: HP Designjet 800-, 1000-, and T1100-series printers

On plain paper, image quality in Fast mode on HP Designjet T1100and T610-series printers was ranked above all print modes on the 800and 1000-series. Not only do HP Designjet T1100and T610-series printers have higher productivity than 800and 1000-series Designjets, but they deliver improved print quality as well. This is possible with a new writing system that has higher media advance accuracy, better drop placement accuracy, and smaller drop volumes.

HP Designjet T1100and T610-series printers produce very fine, sharp black lines3 with 0.1% line length accuracy4. With the capability for color emulation of HP Designjet 500-, 800-, and 1000series printers, HP Designjet T1100and T610-series printers offer color consistency when printing from popular applications like AutoCAD™ along with significantly higher levels of productivity and quality.

In-printer Processing Architecture

HP Designjet T1100and T610-series printers use an ASIC5 to perform fast, hardware-based color processing, pixel scaling, and halftoning in the printer. The ASIC is a fully-custom design with architecture and firmware developed by HP. It can process up to 50 million pixels per second and can transfer up to 50 GB of data per second over its two 32-bit data busses.

1Mechanical printing times, 24-inch and 42-inch T1100, T1100ps, and T610 printers.

2For each printer and print mode, an internal HP print quality jury ranked prints in terms of relative image quality.

3On matte film, line widths of 45.4um horizontal and 67um vertical can be obtained.

4±0.1% of the specified vector length or ±0.2 mm (whichever is greater) at 23°C (73°F), 50-60% relative humidity, on E/A0-size roll feed HP Matte Film in Best or Normal mode.

5ASIC stands for Application-Specific Integrated Circuit

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How the workstation, network, and printer process large and multiple graphics pages has a significant impact not only on overall printing speed but also on output quality and the productivity of users and workgroups. Conversion of a page into a bitmap image can be done either in the user’s workstation or in the printer.

When print jobs are processed in the workstation, large bitmap image files are produced that must be sent over the network to the printer.6 In this case, the workstation and printer must be synchronized, because delays in sending data (due to workstation or network load) can cause the printer to stop and wait for data. This produces visible bands on the print because the ink dries differently when the print carriage stops and waits compared to continuous printing. This effect is called “wait-state banding”. When processing large and complex pages, and when sending multiple bitmap image files over the network, dependable printing performance and print quality can be compromised by workstation load and heavy network traffic.

When print jobs are processed in the printer, the workstation sends only compact spool files7 to the printer. This data is converted to a bitmap image in the printer so that the large volume of bitmap data is kept within the printer’s internal high-bandwidth image processing architecture. Situations where the printer must stop and wait for incoming data are effectively eliminated, and workstation and network loading are significantly reduced benefiting both individual users and network clients.

By processing images in the printer, HP Designjet T1100and T610-series printers provide dependable printing performance and productivity benefits to single users and workgroups. Furthermore, real image quality benefits are realized because graphical elements, such as text and lines, are recognized by HP’s embedded language processors.8 This allows HP Designjet printers to optimize bitmap image generation to produce crisp, clearly-readable text and sharp lines especially when printed against colored or neutral backgrounds.

Image Processing Pipeline: T610-series

The image processing pipeline of HP Designjet T610-series printers is optimized for single-user environments. Figure 2 shows the data paths from the printer’s I/O manager9 through to pixel instructions sent to the printheads. Internally, 24 bits per pixel (bpp) sRGB and device-dependent RGB paths are supported along with a 32 bpp path for device-dependent CMYK. Processes are color-coded in the figure to show whether they are performed in software (SW) or hardware (HW).

Figure 2. Image Processing Pipeline: HP Designjet T610-series Printers

Image processing in HP Designjet T610-series printers begins with interpreting the byte stream of graphics data from the I/O manager. This is done by a Parser.

6From HP internal tests on a suite of A1 pages, the average size of bitmap image data files sent over the network was 206MB.

7Spool files of HP-GL/2, RTL, PCL, and PostScript data are typically 10 to 100-times smaller than the bitmap image files they produce. Based on internal HP tests on a suite of A1 pages, the average size of spool files sent over the network was 6MB compared to 206MB of bitmap image data for the same pages.

8HP-GL/2, RTL, and PCL3GUI processing is supported. HP Designjet T1100ps-series printers support PDF, JPEG, and TIFF formats and also feature embedded PostScript.

9The IO Manager handles data streams from the printer’s physical interfaces such as USB, Integrated LAN, and JetDirect EIO cards.

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