![\"\"](\"http:\/\/copypapersupplier.com\/wp-content\/uploads\/2025\/10\/Infographic-photo-showing-GSM-defined-as-weight-with-dials-for-opacity-brightness-and-stiffness.jpg\")
<\/a><\/p>\nPlain-English definitions<\/h2>\n\n- Opacity \/ Show-through:<\/strong> How much print on one side is visible from the other. Higher opacity = less ghosting.<\/li>\n
- Brightness \/ Whiteness:<\/strong> How \u201ccrisp\u201d black text and colors appear; affects contrast and perceived quality.<\/li>\n
- Stiffness:<\/strong> How the sheet resists bending; influences feel, feeding, and curl.<\/li>\n<\/ul>\n
Print quality factors that drive your choice<\/h2>\nOpacity & show-through<\/h3>\n\n- 70gsm:<\/strong> acceptable for single-sided or light duplex text; ghosting likely on charts\/photos.<\/li>\n
- 80gsm:<\/strong> good general duplex; light charts typically fine.<\/li>\n
- 100gsm:<\/strong> best duplex clarity for color blocks, photos, and dense layouts.<\/li>\n<\/ul>\n
Brightness & whiteness<\/h3>\n
Higher brightness increases contrast, making small text and colors look sharper. It doesn\u2019t guarantee duplex quality, but it improves perceived crispness.<\/p>\n
Coverage matters<\/h3>\n\n- Text-only (\u22485\u201310% coverage):<\/strong> 70gsm or 80gsm, both fine.<\/li>\n
- Mixed text + charts (\u224820\u201340%):<\/strong> Prefer 80gsm; 100gsm if you need immaculate duplex.<\/li>\n
- Heavy color\/photos (50%+):<\/strong> 100gsm for best duplex results.<\/li>\n<\/ul>\n
Duplex printing & \u201cghosting\u201d (practical guidance)<\/h2>\nLight duplex (text + small logo)<\/h3>\n
70gsm can work. Use moderate toner density and avoid dense shading.<\/p>\n
80gsm is safer; standard office defaults usually look tidy.<\/p>\n
Heavy duplex (charts, photos, solid fills)<\/h3>\n
80gsm can show ghosting; set a lighter halftone or move key figures away from back-to-back alignment.<\/p>\n
100gsm keeps pages cleaner and resists show-through.<\/p>\n
![\"\"](\"http:\/\/copypapersupplier.com\/wp-content\/uploads\/2025\/10\/Three-printed-A4-sheets-labeled-70gsm-80gsm-and-100gsm-showing-different-levels-of-duplex-show-through.jpg\")
<\/a><\/p>\nRules of thumb<\/h3>\n\n- Align dense elements so they don\u2019t overlap across sides.<\/li>\n
- Print a \u201cDuplex Test\u201d: one page with mixed elements; flip and check under normal office light.<\/li>\n
- Store paper flat, in wrap, at room humidity; curled or damp sheets misfeed and exaggerate show-through.<\/li>\n<\/ul>\n
Cost-to-use: not just price per ream<\/h2>\n
Most teams compare only the ream cost. A better lens is the cost per accepted page (pages you\u2019re happy to send or file).<\/p>\n
Quick calculator (use your numbers)<\/h3>\n
Inputs: ream price, pages\/ream, expected reprint rate for the job, staff time per reprint.<\/p>\n
Method:<\/p>\n
\n- Pages accepted = total printed \u2212 reprints<\/li>\n
- Effective cost = (paper cost + toner share + staff time for reprints) \u00f7 pages accepted<\/li>\n<\/ul>\n
![\"\"](\"http:\/\/copypapersupplier.com\/wp-content\/uploads\/2025\/10\/Laptop-screen-with-a-simple-\u2018Cost-per-Accepted-Page-calculator-and-notes-for-70gsm-80gsm-and-100gsm.jpg\")
<\/a><\/p>\nHow GSM affects cost<\/h3>\n
70gsm lowers paper cost but can raise reprints for duplex color.<\/p>\n
80gsm stabilizes duplex success for mixed content.<\/p>\n
100gsm costs more per ream but can prevent reprints and client-facing disappointments.<\/p>\n
Helpful links:<\/h2>\n\n- Compare options: A4 copy paper series.<\/a><\/li>\n<\/ul>\n
Printer & copier considerations<\/h2>\n
Jam risk: Real-world jams come from curl, humidity, worn rollers, or out-of-spec media\u2014not GSM alone. Heavier sheets can feed more consistently on some engines; very light sheets can scuff on others.<\/p>\n
Fuser\/roller wear: Dense coverage on thin stock can raise curl; heavier stock handles heat better.<\/p>\n
High-speed runs: For 50+ copies\/minute, 80gsm or 100gsm may hold registration and flatness better.<\/p>\n
Jam-reduction checklist<\/h3>\n\n- Store paper sealed and flat; acclimate to room conditions.<\/li>\n
- Fan small stacks before loading; don\u2019t overfill trays.<\/li>\n
- Match driver setting to paper weight; use \u201cthicker\u201d setting for 100gsm.<\/li>\n
- Replace worn rollers and clean feed paths on schedule.<\/li>\n<\/ul>\n
Comparison matrix (at-a-glance)<\/h2>\n
Print quality factors that drive your choice<\/h2>\nOpacity & show-through<\/h3>\n\n- 70gsm:<\/strong> acceptable for single-sided or light duplex text; ghosting likely on charts\/photos.<\/li>\n
- 80gsm:<\/strong> good general duplex; light charts typically fine.<\/li>\n
- 100gsm:<\/strong> best duplex clarity for color blocks, photos, and dense layouts.<\/li>\n<\/ul>\n
Brightness & whiteness<\/h3>\n
Higher brightness increases contrast, making small text and colors look sharper. It doesn\u2019t guarantee duplex quality, but it improves perceived crispness.<\/p>\n
Coverage matters<\/h3>\n\n- Text-only (\u22485\u201310% coverage):<\/strong> 70gsm or 80gsm, both fine.<\/li>\n
- Mixed text + charts (\u224820\u201340%):<\/strong> Prefer 80gsm; 100gsm if you need immaculate duplex.<\/li>\n
- Heavy color\/photos (50%+):<\/strong> 100gsm for best duplex results.<\/li>\n<\/ul>\n
Duplex printing & \u201cghosting\u201d (practical guidance)<\/h2>\nLight duplex (text + small logo)<\/h3>\n
70gsm can work. Use moderate toner density and avoid dense shading.<\/p>\n
80gsm is safer; standard office defaults usually look tidy.<\/p>\n
Heavy duplex (charts, photos, solid fills)<\/h3>\n
80gsm can show ghosting; set a lighter halftone or move key figures away from back-to-back alignment.<\/p>\n
100gsm keeps pages cleaner and resists show-through.<\/p>\n
<\/a><\/p>\nRules of thumb<\/h3>\n\n- Align dense elements so they don\u2019t overlap across sides.<\/li>\n
- Print a \u201cDuplex Test\u201d: one page with mixed elements; flip and check under normal office light.<\/li>\n
- Store paper flat, in wrap, at room humidity; curled or damp sheets misfeed and exaggerate show-through.<\/li>\n<\/ul>\n
Cost-to-use: not just price per ream<\/h2>\n
Most teams compare only the ream cost. A better lens is the cost per accepted page (pages you\u2019re happy to send or file).<\/p>\n
Quick calculator (use your numbers)<\/h3>\n
Inputs: ream price, pages\/ream, expected reprint rate for the job, staff time per reprint.<\/p>\n
Method:<\/p>\n
\n- Pages accepted = total printed \u2212 reprints<\/li>\n
- Effective cost = (paper cost + toner share + staff time for reprints) \u00f7 pages accepted<\/li>\n<\/ul>\n
<\/a><\/p>\nHow GSM affects cost<\/h3>\n
70gsm lowers paper cost but can raise reprints for duplex color.<\/p>\n
80gsm stabilizes duplex success for mixed content.<\/p>\n
100gsm costs more per ream but can prevent reprints and client-facing disappointments.<\/p>\n
Helpful links:<\/h2>\n\n- Compare options: A4 copy paper series.<\/a><\/li>\n<\/ul>\n
Printer & copier considerations<\/h2>\n
Jam risk: Real-world jams come from curl, humidity, worn rollers, or out-of-spec media\u2014not GSM alone. Heavier sheets can feed more consistently on some engines; very light sheets can scuff on others.<\/p>\n
Fuser\/roller wear: Dense coverage on thin stock can raise curl; heavier stock handles heat better.<\/p>\n
High-speed runs: For 50+ copies\/minute, 80gsm or 100gsm may hold registration and flatness better.<\/p>\n
Jam-reduction checklist<\/h3>\n\n- Store paper sealed and flat; acclimate to room conditions.<\/li>\n
- Fan small stacks before loading; don\u2019t overfill trays.<\/li>\n
- Match driver setting to paper weight; use \u201cthicker\u201d setting for 100gsm.<\/li>\n
- Replace worn rollers and clean feed paths on schedule.<\/li>\n<\/ul>\n
Comparison matrix (at-a-glance)<\/h2>\n
- \n
- 70gsm:<\/strong> acceptable for single-sided or light duplex text; ghosting likely on charts\/photos.<\/li>\n
- 80gsm:<\/strong> good general duplex; light charts typically fine.<\/li>\n
- 100gsm:<\/strong> best duplex clarity for color blocks, photos, and dense layouts.<\/li>\n<\/ul>\n
Brightness & whiteness<\/h3>\n
Higher brightness increases contrast, making small text and colors look sharper. It doesn\u2019t guarantee duplex quality, but it improves perceived crispness.<\/p>\n
Coverage matters<\/h3>\n
- \n
- Text-only (\u22485\u201310% coverage):<\/strong> 70gsm or 80gsm, both fine.<\/li>\n
- Mixed text + charts (\u224820\u201340%):<\/strong> Prefer 80gsm; 100gsm if you need immaculate duplex.<\/li>\n
- Heavy color\/photos (50%+):<\/strong> 100gsm for best duplex results.<\/li>\n<\/ul>\n
Duplex printing & \u201cghosting\u201d (practical guidance)<\/h2>\n
Light duplex (text + small logo)<\/h3>\n
70gsm can work. Use moderate toner density and avoid dense shading.<\/p>\n
80gsm is safer; standard office defaults usually look tidy.<\/p>\n
Heavy duplex (charts, photos, solid fills)<\/h3>\n
80gsm can show ghosting; set a lighter halftone or move key figures away from back-to-back alignment.<\/p>\n
100gsm keeps pages cleaner and resists show-through.<\/p>\n
<\/a><\/p>\nRules of thumb<\/h3>\n
- \n
- Align dense elements so they don\u2019t overlap across sides.<\/li>\n
- Print a \u201cDuplex Test\u201d: one page with mixed elements; flip and check under normal office light.<\/li>\n
- Store paper flat, in wrap, at room humidity; curled or damp sheets misfeed and exaggerate show-through.<\/li>\n<\/ul>\n
Cost-to-use: not just price per ream<\/h2>\n
Most teams compare only the ream cost. A better lens is the cost per accepted page (pages you\u2019re happy to send or file).<\/p>\n
Quick calculator (use your numbers)<\/h3>\n
Inputs: ream price, pages\/ream, expected reprint rate for the job, staff time per reprint.<\/p>\n
Method:<\/p>\n
- \n
- Pages accepted = total printed \u2212 reprints<\/li>\n
- Effective cost = (paper cost + toner share + staff time for reprints) \u00f7 pages accepted<\/li>\n<\/ul>\n<\/a><\/p>\n
How GSM affects cost<\/h3>\n
70gsm lowers paper cost but can raise reprints for duplex color.<\/p>\n
80gsm stabilizes duplex success for mixed content.<\/p>\n
100gsm costs more per ream but can prevent reprints and client-facing disappointments.<\/p>\n
Helpful links:<\/h2>\n
- \n
- Compare options: A4 copy paper series.<\/a><\/li>\n<\/ul>\n
Printer & copier considerations<\/h2>\n
Jam risk: Real-world jams come from curl, humidity, worn rollers, or out-of-spec media\u2014not GSM alone. Heavier sheets can feed more consistently on some engines; very light sheets can scuff on others.<\/p>\n
Fuser\/roller wear: Dense coverage on thin stock can raise curl; heavier stock handles heat better.<\/p>\n
High-speed runs: For 50+ copies\/minute, 80gsm or 100gsm may hold registration and flatness better.<\/p>\n
Jam-reduction checklist<\/h3>\n
- \n
- Store paper sealed and flat; acclimate to room conditions.<\/li>\n
- Fan small stacks before loading; don\u2019t overfill trays.<\/li>\n
- Match driver setting to paper weight; use \u201cthicker\u201d setting for 100gsm.<\/li>\n
- Replace worn rollers and clean feed paths on schedule.<\/li>\n<\/ul>\n
Comparison matrix (at-a-glance)<\/h2>\n
- Compare options: A4 copy paper series.<\/a><\/li>\n<\/ul>\n
- Mixed text + charts (\u224820\u201340%):<\/strong> Prefer 80gsm; 100gsm if you need immaculate duplex.<\/li>\n
- 80gsm:<\/strong> good general duplex; light charts typically fine.<\/li>\n