Direction of printing in practice

[Rein]

Direction of printing D:

You can see the broken gum pattern at the front!








to be continued .....

[Rein]

Direction of printing D (ownwards):







It seems that we got a second purple screen here! Either 45 degrees or 75???

to be continued ....

[Rein]

Direction of printing D:







Is there just ONE purple screen?? One with 45 degrees!?

to be continued ....

[Rein]

Direction of printing D (ownwards):







It seems that we got a second orange screen here! Either 45 degrees or 75???

to be continued ....

[Rein]

Direction of printing D (ownwards):







It seems that we got a second blue screen here! Either 45 degrees or 75???

to be continued ....

[Otin]

Rein,
As I also collect Switzerland I´ll try to check in my stamps what you say. Saludos,
José

[Rein]

Pro Juventute 1936 - direction of printing U [ink flows upwards]:





to be continued ...

[Rein]

Pro Juventute 1936 - direction of printing D [ink flows downwards]:

[Rein]

Pro Juventute 1936 - direction of printing D [ink flows downwards]:






You can see the vertical waves very clearly!

[Rein]

In the 1937 Pro Juventute the direction of printing is R [ink flowing to the right]:





to be continued ...

[Rein]

In the 1937 Pro Juventute the direction of printing is R [ink flowing to the right]:





to be continued ..

[Rein]

In the 1937 Pro Juventute the direction of printing is R [ink flowing to the right]:





to be continued ..

[Rein]

From 1938 onwards Courvoisier S.A. used the reel-fed method for photogravure having usually 4 counter sheet pro cylinder.

Stamp size with perforation 11 3/4 and 14/17 teeth hor. / vert. almost without exception had direction of printing D [ink flowing downwards] for the portrait size and R [ink flowing towards the right] for the landscape size. 4 counter sheets of 10x10 on the cylinder.

Stamp size with perforation 11 3/4 and 15/24 teeth hor. / vert. almost without exception had direction of printing L [ink flowing to the left] or R [ink flowing towards the right] depending on the position of the counter sheet for the landscape

OR

U [ink flowing upwards] and D [ink flowing downwards] depending on the position of the counter sheet for the portrait size in the period of 1938-1965.

Always 4 counter sheets of 5x5 on the cylinder.

to be continued ...

[Rein]

Direction of printing L [ink flowing to the left]:






to be continued ...

[Rein]

Direction of printing R [ink flowing to the right]:






to be continued ...