Edge-to-edge printing on EPSON XP-8700 Series

[tresf]

As the title suggests, QZ Tray cannot print edge-to-edge on this printer.

When attempting on a customer machine:

• Margins specified as zero
• DPI specified as 360
• Page size defined as 5x7

... however the logs show:

• Top and left margin of .11 inches
• Page size as 4.75x6.75

{
  "call": "print",
  "params": {
    "printer": {
      "name": "EPSON XP-8700 Series"
    },
    "options": {
      "bounds": null,
      "colorType": "color",
      "copies": 1,
      "density": 0,
      "duplex": false,
      "fallbackDensity": null,
      "interpolation": "bicubic",
      "jobName": null,
      "legacy": false,
      "margins": {
        "top": 0,
        "right": 0,
        "bottom": 0,
        "left": 0
      },
      "orientation": "portrait",
      "paperThickness": null,
      "printerTray": null,
      "rasterize": false,
      "rotation": 0,
      "scaleContent": true,
      "size": {
        "width": 5,
        "height": 7
      },
      "units": "in",
      "forceRaw": false,
      "encoding": null,
      "spool": null
    },
    "data": [
      {
        "type": "image",
        "data": "my-image.jpg"
      }
    ]
  },
  "signature": "",
  "timestamp": 1726424077476,
  "uid": "xjlf9y",
  "position": {
    "x": 534,
    "y": 423.5
  },
  "signAlgorithm": "SHA1"
}

[tresf]

Quoting some investigation from the customer:

Note: This is a verbatim copy of an email, but 5x7 should be used instead per customer request.

I think the problem might be that for this printer definition there are two paper sizes that overlap, one is borderless. Here are some bits from the ppd file (attached).

*PageSize EPKG/4 x 6 in: "<</PageSize[288.00 432.00]/ImagingBBox null>>setpagedevice"
*PageSize EPKG.NMgn/4 x 6 in (Borderless): "<</PageSize[288.00 432.00]/ImagingBBox null/cupsBorderlessScalingFactor 1.05>>setpagedevice"

*PageRegion EPKG/4 x 6 in: "<</PageSize[288.00 432.00]/ImagingBBox null>>setpagedevice"
*PageRegion EPKG.NMgn/4 x 6 in (Borderless): "<</PageSize[288.00 432.00]/ImagingBBox null/cupsBorderlessScalingFactor 1.05>>setpagedevice"

*ImageableArea EPKG/4 x 6 in: "8.40 8.40 279.60 423.60"
*ImageableArea EPKG.NMgn/4 x 6 in (Borderless): "0.00 0.00 288.00 432.00"

*PaperDimension EPKG/4 x 6 in: "288.00 432.00"
*PaperDimension EPKG.NMgn/4 x 6 in (Borderless): "288.00 432.00"

I'm not sure where/when qztray maps from size onto one of these, if ever, but maybe whatever does this is hitting the first definition.

[tresf]

Logs from the offending machine:

2024-09-15T14:14:37,478 [DEBUG] Message: {"call":"print","params":{"printer":{"name":"EPSON XP-8700 Series"},"options":{"bounds":null,"colorType":"color","copies":1,"density":0,"duplex":false,"fallbackDensity":null,"interpolation":"bicubic","jobName":null,"legacy":false,"margins":{"top":0,"right":0,"bottom":0,"left":0},"orientation":"portrait","paperThickness":null,"printerTray":null,"rasterize":false,"rotation":0,"scaleContent":true,"size":{"width":5,"height":7},"units":"in","forceRaw":false,"encoding":null,"spool":null},"data":[{"type":"image","data":"my-image.jpg"}]},"signature":"","timestamp":1726424077476,"uid":"xjlf9y","position":{"x":534,"y":423.5},"signAlgorithm":"SHA1"}
2024-09-15T14:14:37,484 [DEBUG] Calculated dialog centered at: java.awt.Point[x=534,y=423]
2024-09-15T14:14:38,260 [INFO] Allowed An anonymous request to print to EPSON XP-8700 Series
2024-09-15T14:14:38,261 [DEBUG] Using qz.printer.action.PrintImage to print
2024-09-15T14:14:38,261 [DEBUG] Searching for PrintService matching EPSON XP-8700 Series
2024-09-15T14:14:38,262 [DEBUG] Matched default printer, skipping further search
2024-09-15T14:14:38,262 [WARN] Default resolution for EPSON XP-8700 Series is missing, using fallback: null
2024-09-15T14:14:38,262 [WARN] Cannot read null as a double for fallbackDensity, using default
2024-09-15T14:14:38,285 [DEBUG] Parsed 1 images for printing
2024-09-15T14:14:38,290 [INFO] Starting printing (1 copies)
2024-09-15T14:14:38,290 [WARN] Not using a supported DPI for printing
2024-09-15T14:14:38,290 [DEBUG] Available DPI: [null]
2024-09-15T14:14:38,333 [DEBUG] Scaling image up by x3.511386030917281
2024-09-15T14:14:39,780 [DEBUG] Paper area: 8,8:342,486
2024-09-15T14:14:39,781 [DEBUG] Memory: 138m/8192m
2024-09-15T14:14:40,766 [INFO] Printing complete

[tresf]

Updated original bug report with proper DPI and updated JSON.

[Vzor-]

An upstream bug has been reported with Bellsoft. I will update this issue with any progress.

[tresf]

Related upstream bugs:

https://bugs.openjdk.org/browse/JDK-8344119
https://bugs.openjdk.org/browse/JDK-8343224