DEG0010688MA - - Google Patents

Info

Publication number

DEG0010688MA

DEG0010688MA DEG0010688MA DE G0010688M A DEG0010688M A DE G0010688MA DE G0010688M A DEG0010688M A DE G0010688MA

Authority

DE

Germany

Prior art keywords

disc

pane

roughened

light source

light beam

Prior art date

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

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• 239000011148 porous material Substances 0.000 claims description 4
• 239000011111 cardboard Substances 0.000 claims description 3
• 238000005530 etching Methods 0.000 claims description 3
• 239000011248 coating agent Substances 0.000 claims description 2
• 238000000576 coating method Methods 0.000 claims description 2
• 238000007788 roughening Methods 0.000 description 4
• 238000005282 brightening Methods 0.000 description 3
• 239000000123 paper Substances 0.000 description 3
• 239000011521 glass Substances 0.000 description 2
• 239000004033 plastic Substances 0.000 description 2
• 239000003795 chemical substances by application Substances 0.000 description 1
• 238000009792 diffusion process Methods 0.000 description 1
• 229910001651 emery Inorganic materials 0.000 description 1
• 239000011888 foil Substances 0.000 description 1
• 238000010438 heat treatment Methods 0.000 description 1
• 238000005286 illumination Methods 0.000 description 1
• 238000007373 indentation Methods 0.000 description 1
• 239000011087 paperboard Substances 0.000 description 1
• 230000035945 sensitivity Effects 0.000 description 1
• 239000012780 transparent material Substances 0.000 description 1