Seiko

[mitsman]

[SYZo]

Γιωργο ευχαρισουμε πολυ.. πραγματικα πολυ χρησιμο. αλλο ενα tool watch με τεχνολογια απιστευτη για την εποχη του

[Elio5]

Πολυ καλο Τζωρτζ. 

[Blackbird]

To 6159-7010 όταν βγήκε είχε περίπου 20 πρωτιές. Ο Eis μπορεί να τις θυμάται. Οι κυριότερες ήταν:
Πρώτο ρολόι με κάσα  τιτανίου.
Πρώτο ρολόι με χρήση κεραμικού υλικού.
Πρώτο ρολόι με προστατευτικό κάλυμμα.
Πρώτο καταδυτικό με ζαφείρι.
Πρώτο καταδυτικό με τσιμούχες L για αντιμετώπιση της εισόδου ηλίου στην κάσα.
Πρώτο καταδυτικό με μηχανή 36.000 παλμών.

[george_]

Authored by Tokunaga



Our research and development was done as the perfect He-mixed-gas diver's watch of the 6159 professional 600m diver's watch in 1975.

We designed the diver's watch as the development target that the inner pressure of the watch case did not go up in high-pressure helium mixture gas like Rolex etc., and the development of the special quality gasket of the material of Improved-IIR(Isobutylene-isoprene rubber) and in the structure development of the watch case we used the glass gasket of L type and one-piece case became the conclusive factor in the He-tightness.

As the result of the experiment, the penetration of helium gas is suppressed by about 1/100 to the conventional watch case, the inner pressure of the case does not turn into high pressure and the diver's watch of the ideal saturation diving specification which does not need "helium gas escape valve" is completed, and the SEIKO professional diver's watches lead the diver's watch world after that watch as "a diver's watch which is proud of the highest water- tightness and air-tightness in the world."

Please use forever regularly those SEIKO products which are proud of the excellent performance if you please.

Sincerely yours,
Ikuo Tokunaga

[george_]

Tokunaga on: The materials of Seiko 1000m diver's watch


The material of the protect cover (outer case body) of Seiko 1000m diver's watch is not coating of ceramics but the solid material of ceramics.

In addition, the expression with "base metal" in the marking of a case is used when the parts which carried out the golden color mean that it is not "gold", and the materials of the base metal are such as brass, nickel silver, stainless steel, pure titanium and titanium alloy etc.

These materials are non-magnetic materials. The duty of anti-magnetic property was not achieved by those parts, but the anti-magnetic plate (please refer to the cross section drawing below) made of pure iron on the inner case body has achieved the duty of anti-magnetic property.

I summarized the materials and surface treatment of those parts on the following image. Please refer to in detail.

[george_]

About the luminous paints of Seiko watches, "Radioactive luminous paint" which uses a radioactive material was abolished five years ago in all watches including the diver's watches. We had switched to non-radioactive "Photo-luminescent paint" with high safety extensively.

The "Radioactive luminous paint" which was being used in Seiko watches before was not "Tritium" but "Promethium = 147Pm". Since the quantity of the radioactive material which can be used for one watch is restricted and radiation energy decreases, in the case of the watch used around 10 years, energy will become weak and luminous paint will not shine.

The "Photo-luminescent paint" of Seiko watches is called "LUMIBRITE" (trademark), and is made of SrAl2O4 + Eu + Dy. We can use it without any restriction, excluding the above dangerous radioactive materials at all, and it can continue shining several hours and the most important feature of this luminous paint is safety for the users. Although the old photo-luminescent paint disappeared for a short time, in case of "LUMIBRITE", when it shifts to darkness from a general living environment (conditions which light hits for 10 minutes in the illumination of about 500 lx), it will shine for about 3 to 5 hours by after glow of light in case of general grade "LUMIBRITE", and in case of the highly efficient "LUMIBRITE" used for diver's watches and adventure watches etc., it will shine for about 5 to 8 hours in darkness. If even light has hit, long periods of use can be performed repeatedly any number of times, and there is little degradation in this paint, therefore "LUMIBRITE" is an excellent luminous paint for watches. (See the following figure).






Ikuo Tokunaga

[george_]

Since the acrylic resin (1) has soft hardness and a heat-resistant temperature is very low, concerning the glass of PROSPEX watches which have high durability performance, such as a MARINEMASTER of this question, we couldn't use acrylic glass in which a lot of scratches and deformation are occurred on the surface.
Although (2) and (3) glass are used by SEIKO with the trademark of "HARDLEX" (glass which raised mechanical intensity by special chemical strengthening processing), they are used for standard watches.
On the other hand, sapphire glass (4) is used abundantly for the dress watches and high-class water-resistant watches and also diver's watches, such as CREDOR and Grand SEIKO and also some PROSPEX watches, such as LANDMASTER watches, SCUBAMASTER diver's watches of SEIKO brand, and hardness and theoretical intensity are excellent, there is also a problem of being unable to make as theoretical strength by the mechanism in destruction of the glass with which a cut angle control is important and a micro crack being detected in microscopic examination in case of large and thick glass.

In SEIKO watches, in addition to the above-mentioned general materials, "High- quality HARDLEX" (the high intensity and highly efficient glass strengthened on (3) Borosilicate glass) and original "SAPPHLEX"(the high cost performance combined glass which adhered thin plate of (4) on (2) or (3) glass) are put in practical use, and those are used according to the aim and specification of the watches.

"High- quality HARDLEX" which is the high intensity and the highly efficient article of the glass are used for the PROSPEX watches and ordinary sports watches. Also "SAPPHLEX" glass is used for the sports watches or the sporty watches,

In case of diver's watch which are required so many characteristics totally, such as resistance to pressure, water resistance, shock resistance, wear resistance, heat resistance, and durability etc., we usually use "High- quality HARDLEX" glass having the most excellent cost performance and sometimes use sapphire glass as a glass of some PROSPEX diver's watches.


Ikuo Tokunaga

[SYZo]

αν ηταν ελβετικο, θα ειχε ιδια τιμη με το ploprof

[Βost]

αν ηταν ελβετικο, θα ειχε ιδια τιμη με το ploprof

χαλαρά..!!!

[DragonAce]

αν ηταν ελβετικο, θα ειχε ιδια τιμη με το ploprof

χαλαρά..!!!

σίγουρα, αλλά σε αυτή τη ζωή δε μπορούμε να τα χουμε όλα! 

[grecellin]

αν ηταν ελβετικο, θα ειχε ιδια τιμη με το ploprof

Ναι έχεις δίκιο, αλλά ποιος φταίει;
Μόνο η seiko, που για χρόνια προσπαθούσε να κερδίσει πελάτες με διαφημίσεις του στυλ "με λίγα λεφτά παίρνεις πολύ καλό ρολόι. έχουμε μαζική παραγωγή"

[SYZo]

κανενας δεν φταιει Κωστα, ο μονος κερδισμενος ειμαι εγω σαν καταναλωτης.

[DragonAce]

αν ηταν ελβετικο, θα ειχε ιδια τιμη με το ploprof

Ναι έχεις δίκιο, αλλά ποιος φταίει;
Μόνο η seiko, που για χρόνια προσπαθούσε να κερδίσει πελάτες με διαφημίσεις του στυλ "με λίγα λεφτά παίρνεις πολύ καλό ρολόι. έχουμε μαζική παραγωγή"

Δε φταίει, καλά κάνει 
για να έχει γιγαντωθεί μέσα στα χρόνια αποδεικνύεται ότι δουλεύει σωστά αυτή η στρατηγική
άλλοι πρέπει να τα βλέπουν, ή τα βλέπουν μετά τις εξαγορές... 

[Blackbird]

αν ηταν ελβετικο, θα ειχε ιδια τιμη με το ploprof

Ευτυχώς κι έτσι με κόστισε το 1/3 του Πλοπρόφ.

Όμως το 1977 το 6159-7010 κόστιζε περίπου 600$ όταν το SeaDweller κόστιζε 500$.