 PR/epson-inkjet-printer-escpr/src/filter.c  |  9 +++++++++
 PR/epson-inkjet-printer-escpr/src/wrapper.c | 22 ++++++++++++++--------
 2 files changed, 23 insertions(+), 8 deletions(-)

diff --git a/PR/epson-inkjet-printer-escpr/src/filter.c b/PR/epson-inkjet-printer-escpr/src/filter.c
index 9cc3c4b3..8ae09134 100644
--- a/PR/epson-inkjet-printer-escpr/src/filter.c
+++ b/PR/epson-inkjet-printer-escpr/src/filter.c
@@ -333,9 +333,18 @@ main (int argc, char *argv[])
 	band_line = 1;
 
 	if (strcmp (fopt.ink, "COLOR") == 0)
+	{
 		byte_par_pixel = 3;
+	}
+	else if (strcmp (fopt.ink, "MONO") == 0)
+	{
+		byte_par_pixel = 1;
+	}
 	else
+	{
+		fprintf(stderr, "ERROR: [escpr] raster data is handled as 8bpp, unknown option\n");
 		byte_par_pixel = 1;
+	}
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////
 	epsInitLib();
diff --git a/PR/epson-inkjet-printer-escpr/src/wrapper.c b/PR/epson-inkjet-printer-escpr/src/wrapper.c
index 2c1ef8b9..295316c8 100644
--- a/PR/epson-inkjet-printer-escpr/src/wrapper.c
+++ b/PR/epson-inkjet-printer-escpr/src/wrapper.c
@@ -188,6 +188,19 @@ main (int argc, char *argv[])
 		int ret;
 		ret = cupsRasterReadHeader (ras, &header);
 
+		if (header.cupsBitsPerPixel == 24 && header.cupsColorSpace == 1)
+		{
+			strcpy (fopt.ink, "COLOR");
+		}
+		else if (header.cupsBitsPerPixel == 8 && header.cupsColorSpace == 0)
+		{
+			strcpy (fopt.ink, "MONO");
+		}
+		else
+		{
+			strcpy (fopt.ink, "NOT_SUPPORTED");
+		}
+
 		if (ret == 0 || cancel_flg) //データをすべて読み終わった
 		{
 
@@ -396,14 +409,7 @@ get_option_for_ppd (const char *printer, filter_option_t *filter_opt_p)
 	}
 
 	/* ink */
-	if (filter_opt_p->ink[0] == '\0')
-	{
-		opt = get_default_choice (ppd_p, "Ink");
-		if (!opt)
-			return 1;
-
-		strcpy (filter_opt_p->ink, opt);
-	}
+	// Don't touch Ink key.
 
 	/* MediaType */
 	if (filter_opt_p->quality[0] == '\0')