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Post by vjaska on Mar 9, 2013 3:06:30 GMT
What makes them fade is the process used - they are laser printed onto Tyvek plastic sheets which replaced the labour intensive method of cutting out letters and silk screening them to muslin-reinforced black paper.
As for day-glow blinds, can't remember why they were introduced but for anyone interested, they were introduced around mid 1995.
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Post by ServerKing on Mar 9, 2013 7:25:56 GMT
Noticed one today and the destination blind was missing...the lights is quite bright on it's own so not sure why they are so poor with a blind in front of them perhaps the Tyvek is too thick to let the backlight shine thru
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Post by Deleted on Mar 9, 2013 9:41:19 GMT
The white on black blinds on some of the 291 and 386 Enviro's look quiet good and clear. It could be because they are new though. I agree with LC1, I thought the day glow blinds were introduced to do with some DDA requirements and as LC1 says people with colour blindness. The NBFL on route 38 I sore had white on black blinds. Dayglo's where introduced in the mid 80's ... long before the DDA was ever thought of ... Metrobuses and Titans were converted to Dayglo
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Post by lc1 on Mar 9, 2013 10:34:04 GMT
Noticed one today and the destination blind was missing...the lights is quite bright on it's own so not sure why they are so poor with a blind in front of them perhaps the Tyvek is too thick to let the backlight shine thru Was my thinking.
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Post by eggmiester on Mar 10, 2013 1:25:54 GMT
tyvek has fibre strands in it which gives it its strength but this in turn can affect light passing through.
All printed blinds are still silk screened, onto tyvek or polyester as Laser printers would not be able to produce such a dark background so a solvent dye is used. Laser etchers are used in the screen making process though, which is how you can get graphics (like tfl roundel) etc printed clearly on the blinds.
Powerblinds as far as i know, the barcodes are printed prior to the full screening using a heavy duty inkjet printer but the main text/displays are still silk printed due to time and cost savings this involves especially in batch production.
Some operators sill use vinyl cut blinds, where vinyl is cut on a plotter and the information revealed by 'weeding' out the approprite piece of cut vinyl then stuck onto a dayglo polyester sheet. this is the case of WVL's 272 and 273 at BX they had vinyl cut blinds made by another supplier as mckennas could not garuntee delivery in time for thier use at BX.
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Post by ServerKing on Mar 17, 2013 18:42:31 GMT
tyvek has fibre strands in it which gives it its strength but this in turn can affect light passing through. All printed blinds are still silk screened, onto tyvek or polyester as Laser printers would not be able to produce such a dark background so a solvent dye is used. Laser etchers are used in the screen making process though, which is how you can get graphics (like tfl roundel) etc printed clearly on the blinds. Powerblinds as far as i know, the barcodes are printed prior to the full screening using a heavy duty inkjet printer but the main text/displays are still silk printed due to time and cost savings this involves especially in batch production. I guess they use HP DesignJet or similar type printer... the guys at Cartridge World must love them Didn't realise how much work goes into making a blindset and somehow this is better than LED
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Post by wh541 on Mar 17, 2013 19:21:59 GMT
The white on black blinds on some of the 291 and 386 Enviro's look quiet good and clear. It could be because they are new though. I agree with LC1, I thought the day glow blinds were introduced to do with some DDA requirements and as LC1 says people with colour blindness. The NBFL on route 38 I sore had white on black blinds. Dayglo's where introduced in the mid 80's ... long before the DDA was ever thought of ... Metrobuses and Titans were converted to Dayglo Dayglo blinds were not introduced in the 80's the earliest must be 94 /95 no earlier. There may have been "yellow" blinds for night route route but there were not dayglo,
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Post by vjaska on Mar 17, 2013 23:37:10 GMT
Dayglo's where introduced in the mid 80's ... long before the DDA was ever thought of ... Metrobuses and Titans were converted to Dayglo Dayglo blinds were not introduced in the 80's the earliest must be 94 /95 no earlier. There may have been "yellow" blinds for night route route but there were not dayglo, Indeed your correct - I mentioned at the top of the page that it was mid 1995, possibly April but I'm unsure which month. The 15 & 188 had yellow blinds as well in the 80's as a type of branding so as to distinguish them as tourist routes.
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Post by Deleted on Mar 26, 2013 21:41:19 GMT
Dayglo blinds were not introduced in the 80's the earliest must be 94 /95 no earlier. There may have been "yellow" blinds for night route route but there were not dayglo, Indeed your correct - I mentioned at the top of the page that it was mid 1995, possibly April but I'm unsure which month. The 15 & 188 had yellow blinds as well in the 80's as a type of branding so as to distinguish them as tourist routes. London United used (non-dayglo) yellow on black for their "Riverside" routes from V from about 1991. If I'm correct, these were the first "normal" and only day routes to do so, as dayglo followed soon after.
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Post by vjaska on Mar 26, 2013 23:59:58 GMT
Indeed your correct - I mentioned at the top of the page that it was mid 1995, possibly April but I'm unsure which month. The 15 & 188 had yellow blinds as well in the 80's as a type of branding so as to distinguish them as tourist routes. London United used (non-dayglo) yellow on black for their "Riverside" routes from V from about 1991. If I'm correct, these were the first "normal" and only day routes to do so, as dayglo followed soon after. 1991 is not in the 80's ;D
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Post by Deleted on Mar 28, 2013 22:28:49 GMT
London United used (non-dayglo) yellow on black for their "Riverside" routes from V from about 1991. If I'm correct, these were the first "normal" and only day routes to do so, as dayglo followed soon after. 1991 is not in the 80's ;D Well indeed! What I meant, but didn't do it too well, was that I believe these were the first non-tourist, non-night bus routes, ie normal day, to have on black, but please correct me if I'm wrong. ;D
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Post by vjaska on Mar 28, 2013 23:13:37 GMT
1991 is not in the 80's ;D Well indeed! What I meant, but didn't do it too well, was that I believe these were the first non-tourist, non-night bus routes, ie normal day, to have on black, but please correct me if I'm wrong. ;D Lol, I understand now
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Post by wh541 on Mar 29, 2013 9:46:58 GMT
1991 is not in the 80's ;D Well indeed! What I meant, but didn't do it too well, was that I believe these were the first non-tourist, non-night bus routes, ie normal day, to have on black, but please correct me if I'm wrong. ;D Route 25 used to use "Yellow" blinds at weekends to show that route 25 run via Tower Hill at weekends. This could have been before 1991 ;D Also route S2 used to use a Yellow blind for the stratford destination so passengers at Bromley By Bow could tell the buses apart ;D
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Post by Deleted on Mar 29, 2013 18:10:43 GMT
Well indeed! What I meant, but didn't do it too well, was that I believe these were the first non-tourist, non-night bus routes, ie normal day, to have on black, but please correct me if I'm wrong. ;D Route 25 used to use "Yellow" blinds at weekends to show that route 25 run via Tower Hill at weekends. This could have been before 1991 ;D Also route S2 used to use a Yellow blind for the stratford destination so passengers at Bromley By Bow could tell the buses apart ;D Ah yes, but they were all for special reasons. V garage used yellow on black as standard for all its routes. Therein lies the difference. ;D
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