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The new HiTi 640PS takes much of its design cues from the PhotoShuttle, another printer from Hi-Touch Imaging Technologies, but in this case finished in an unusual electric blue colour. The 640 PS is a Windows (98/98SE/2000/XP) compatible printer, and a new addition to the company's product line. It is positioned one rung above last year's 630PS model, the previous high-end consumer model. The 640PS offers an increase in resolution over the 630PS, is physically a bit bigger than the 630PS, and is compatible with a much wider range of memory cards.

HiTi specializes in the production of Dye Diffusion Thermal Transfer (D2T2) photo printers, and has blazed the trail in making not only these high quality printers affordable, but their supplies as well.

Until recently, high prices made the use of 4x6 photo printers more expensive than simply having the photos printed at a store or by a printing service. The arrival of HiTi printers, and the reasonable price of their supplies, changed that.

D2T2 printers use a process that applies 3 coats of colour, one after the other, to a paper designed to receive them. The printer then overcoats the colours with a film to protect the print from UV rays, fingerprints and moisture. The result is a print that is virtually indistinguishable from the output one gets from a mini-lab.

 
What's in the box:

The 640PS comes very-well packed, in a box that contains: the printer, its hand controller, the paper tray, both a USB printer cable and a power cable, a CD with the driver and a printing utility called Photo Désirée, and finally, a starter ribbon with 8 sheets of 6x4 paper and 2 types of sticker sheets.

Supplies for the HiTi 640PS are common with other printers from the manufacturer's consumer printer line such as the 630DL, 630PS, PhotoShuttle, and the new HiTi Transphotable, a portable photo printer that can be run from the accessory jack of a car.

The consumables for the printer are a 50 image Photo Kit ($19.99 US), or a variety of paper/ribbon kits for stickers of assorted sizes (see the HiTi site for details).
The package shown above is the standard photo paper kit, which contains 50 sheets of paper separated into 2 packs of 25 sheets, and, sealed in a foil pouch, the ribbon cartridge.


The printing system:
The ribbon is contained in a plastic cartridge that simply slips into place in the printer. Installation of the ribbon is considerably easier than the replacement of ink tanks with ink jet printers, and no head alignment needs to be performed, avoiding waste.

Each dye panel — yellow, magenta, cyan and the overcoat — are placed sequentially on the ribbon. When printing starts, the paper receives the yellow layer first, the magenta coat second, and the cyan layer last. A final pass through the printer overcoats the print. Total time for the printing process: 1 minute 25 seconds when printing from a computer.
The dye layers are applied to the paper by the print head (1), a thermal printing head.

The data for the print can originate either from a Windows computer, or from memory cards placed directly in the printer.

The 640PS accepts a variety of memory cards in one of two slots (2) located on the lower right of the printer.
CompactFlash (Types I and II), Microdrives, SmartMedia, SM (Secure Digital) or MMC (MultiMedia), or Memory Stick can be used. In addition, xD memory cards can be used in a CF adapter.
The paper for HiTi photo printers — and others such as Sony's DPP-EX5 which has a generally similar design — is special. It has edges at each end that need to be snapped off once the print is made, and each end is of a different length (see photo below).

Twenty-five sheets of photo paper fit into the tray, the wider tear-off edge being placed towards the outside of the tray.
The tear-off edges must be used to avoid touching the print area of the paper. The tray need not be pulled out to be refilled as it has a flip-up transparent lid that allows loading paper into it.
A 4x6 print occupies the entire width of the paper, and the entire length once the ends are snapped off, creating a borderless print.

Stickers are different. The sheets have no break-off ends, and have similar sides, making it unimportant which direction — as long as they are the right side up — goes in first.

Three types of stickers are available. 4 x 4, 4/2/4, and 1x1. The first yields a sheet of 16 photo quality stickers (great for marking items), the second yields 8 small stickers and 2 bigger ones, and the last yields a single large sticker.



No computer? No problem

While some other printers can also print "stand alone", the HiTi 640PS is one of a handful that has its own 1.6 inch LCD screen. Using the hand controller, the built-in printing interface can be used to make prints of all types and edit photos.

As with the 630PS, the controller for the 640PS is connected to the printer with a curly cord, allowing it to be removed so it can be used more comfortably. The printer automatically detects when it is not connected to a computer, and immediately shows its own interface on the LCD monitor, effectively providing similar features to the ones available with the printer driver, or PhotoDésirée, the included software.

When used in stand alone mode, the printer's interface presents 8 options:
  • Photo: Starts by showing full colour thumbnails of the photos on the card, 4 to a screen. When one is selected, the photo fills the screen and can be resized, colour corrected, or adjusted.
  • ID Photo: Prints the selected image in multiple copies on a single sheet, with from 4 to 16 copies of the photo, perfect for passport photos and each size is identified by its size in millimetres, a way commonly used to set ID and Passport photos requirements.
  • Index Print: Prints an index (thumbnails) of all the photos on the card, in either, 20, 30, or 56 thumbnails per page.
  • Sticker: Prints the selected photo on a special sticker stock with an adhesive backing. 4 small photos on either end of the sheet, and 2 larger photos, side by side, in the middle; or a group of 4 x 4 small photos.
  • Quick Photo: Immediately presents the thumbnails and prints the one selected without offering options such as enhancing, resizing, or choosing the number of prints to make.
  • DPOF: Reads and applies the DPOF (Digital Print Order Format) information of the photo to print it. (Note that not all DPOF settings set by cameras are compatible with the 640PS.)
  • Print All: Prints all the photos found on the card, one after the other, as single prints. Should the paper run out, the printer asks for the tray to be refilled.
  • Setup: Provides options for:
    • Card select: to select the card slot to use when more than one type of memory cards are present in the slots.
    • Update firmware: allows updating the firmware using a memory card to run the BIOS flashing utility. (This can also be done from a computer, and HiTi provides regular firmware updates for their printers).
    • Printer setting: has a number of sub-functions. Position calibration (serves to calibrate the print position with stickers), Printout Settings (brightness, contrast, red/green balance, Blue/yellow balance, sharpness, return to factory defaults, ok); Select matte or glossy finish; Date Print (On or Off); and Ok to register the choices.
    • LCD Adjustment: serves to adjust contrast, brightness, red or blue saturation, horizontal position of the photos or data displayed on the LCD, or return the printer to its factory defaults. Ok, the last option, returns to the previous menu.
    • Language: selects the interface language from English, French, German, Italian, Japanese, Portuguese, Spanish, and Chinese.
    • Cleaning mode: Requires the use of a cleaning ribbon, separately available from HiTi (see the HiTi site consumables area for the cleaning kit).
    • About: displays the current Firmware's version.

As is the case with the 630PS, the 640PS is only compatible with JPEG format images when printing stand alone. Printing other formats, such as TIFF, must be done from a computer.




Printing from a computer:

When the printer is connected to the USB port of a computer, and the printer is turned on, its LCD screen briefly flashes "PC Mode" as it detects the presence of the computer, and disables its control panel.

The driver and software are both on one CD-ROM, but can be installed separately if desired. The process is simple, but requires a re-boot to complete the installation. Moreover, the printer should not be connected to the computer during the installation of the printer driver.

Most image editing software supported by Windows will work with the print driver for the HiTi 640PS. In addition, HiTi provides its own full function photo printing utility, Photo Désirée.
The program supports all the paper formats available for the printer: the standard 4 x 6 inch sheet, the various sticker combinations, and ID photos, with from 4 to 16 copies of the photo on a single sheet.

PhotoDésirée's use is quite simple. Image selection is done from the upper left window, and can be made from a variety of sources such as card readers — including those on the printer — or any disk drive on the computer.
The selected image is then moved into the Layout window by clicking the yellow arrow in between the two. At this stage the photo can be edited using the Enhancer (see below). When ready, the photo is then passed on to the Print Queue window at the bottom, by clicking the yellow arrow below the layout window.

Photo Désirée's Image Enhancer can be used to adjust the output for a number of parameters:

  • Brightness
  • Saturation
  • Contrast
  • Rotation
  • Sharpness
  • Resizing
  • Gamma correction

In addition, various borders and/or text can be added, including monthly calendar overlays.



Print Quality

The most notable improvement the 640PS brings to the HiTi product line is a 403 DPI resolution compared to the 300 DPI resolution of the 630PS. The 403 DPI resolution of the 640PS is comparable to HiTi's professional 640DL model, and yields a smooth and superbly detailed image. We should point out here that to the naked eye, the increased resolution of the 640PS over the 630PS is not obvious. Given a camera with a resolution of 3 or more megapixel, to the unaided eye, all these printers produce images with no visible pixels.

However, using a 6X printer's loupe, minute differences between both outputs can be seen. For example, when a section of blue sky is seen under magnification, tiny rows of pixels can be discerned in the 630PS print, and these cannot be seen in the 640PS print.

Without any magnification, what is visible is that the 640PS print is slightly brighter, and its colours a bit more vibrant.
In the examples below, we have photographed the same image printed on each printer. The image shown at left is a scan — reduced in size — of the borderless 4 x 6 made by the 640PS. To show the differences between each printer, a small section (the little red square) has been photographed, cropped from photos made of each print. The small red area shown in the print at left is shown below at 100% scale.

The photos are both printed using the same paper batch and the same ribbon, and using the printer's defaults. The area show below measures approximately 4 x 3 mm (0.156 x 0.117 inch) in the actual prints made with each printer.

630PS print

640PS print
It is worth highlighting here that the area shown above is far too small for the details shown here to be seen with the naked eye. Only the magnification of a macro lens is able to reveal the differences. In reality, the rows of pixels visible in the 630PS shown above are completely invisible, and are even quite difficult to make out with a 6X printer's loupe.

The photos produced by the 640PS are truly amazing. The print quality is extremely high, and creates instant believers in digital photography out of those who see them.

Nevertheless, a warning should be made that some dust can work its way into the printer, and end up on the first print made if the printer has been sitting uncovered for a period of time. Indeed, when left uncovered, small specs of dust can get in through the ventilation slots. The solution is simple, a small cover for the top of the printer prevents any dust from marring the first print quite effectively.

At a price of $299 US, the 403 DPI 640PS is a bit more expensive than others in the HiTi line-up. However, when the photos it produces are looked at, few are likely to regret the extra money.
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